2024-03-28T17:22:18Z
http://www.sciencepubco.com/index.php/IJAC/oai
oai:ojs.pkp.sfu.ca:article/819
2014-11-13T03:01:54Z
IJAC:ART
Mathematical functions of the rate of enzymatic reaction with Temperature, concentration of substrate and concentration of enzyme are proved that the divide differences are symmetrical in all their arguments
UDDIN, NIZAM
In this research paper, I used mathematical functions of the rate of enzymatic reaction for proving the divide differences are symmetrical in all their argument. The concentration of substrate is the limiting factor, as the substrate concentration increases, the Enzyme reaction rate increases. Assuming a sufficient concentration of substrate is available, increasing Enzyme concentration will increase the enzymatic reaction rate. The rise in Temperature accelerates an Enzyme reaction but at the same time causes inactivation of the protein. At certain Temperature known as the optimum Temperature the activity is maximum. Temperature, concentration of substrate and concentration of enzyme are increased the rate of enzymatic reaction at a limit which is called optimum limit. I take their values in mathematical form where “n” is optimum limit.
Science Publishing Corporation
2013-04-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/819
10.14419/ijac.v1i1.819
International Journal of Advanced Chemistry; Vol. 1 No. 1 (2013); 1-4
2310-2977
10.14419/ijac.v1i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/819/656
oai:ojs.pkp.sfu.ca:article/988
2014-12-20T03:19:52Z
IJAC:ART
Mechanochemical Synthesis and Characterization of conductive Polyaniline Catalyzed by Maghnite-H+ (Algerian Montmorillonite)
Abdelkader, Rahmouni
Amine, Harrane
Mohammed, Belbachir
Conductive polymers had been the topic of the large number of investigations during last decades because of their unique properties such as mechanochemical strength, electrical conductivity, corrosion and thermal stability. Maghnite-H+ is a montmorillonite sheet silicate clay, which exchanged with protons. Polyaniline (PANI), with unique electrical and optical properties, is a promising candidate for wide range of potential applications. So that, in the present paper we report:1-Synthesis of polyaniline by chemical polymerization of aniline using montmorillonite (Mag-H+) as Protonic source.2- Different oxidant such as (K2S2O8Â , K2Cr2O7Â , CuCl2).3- Characterization of different polyaniline by different technics.With these easy synthesis associated good solubility, thermal stability and high electrical conductivity.
Science Publishing Corporation
2013-06-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/988
10.14419/ijac.v1i1.988
International Journal of Advanced Chemistry; Vol. 1 No. 1 (2013); 5-12
2310-2977
10.14419/ijac.v1i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/988/729
oai:ojs.pkp.sfu.ca:article/1099
2014-11-13T03:01:57Z
IJAC:ART
Application of Chromatographic and Spectrophotometric Methods for The Analysis of Aliskiren and Hydrochlorothiazide Antihypertensive Combination.
Ezzeldien, Menna I.
Shokry, Engy
Fouad, Marwa A.
Elbagary, Ramzia I.
High performance liquid chromatographic (HPLC) and spectrophotometric methods developed for the simultaneous determination of Aliskiren (ALK) and Hydrochlorothiazide (HCT) combination in bulk powder and in tablets dosage form. Determination of ALK and HCT was achieved by chromatographic separation on Econosphere C-18 column using a mobile phase consisting of water (pH 7.5): acetonitrile (50:50) at a flow rate of 0.5 mL.min?1 and UV detection at 208 nm. Method validation parameters were found to be acceptable over the concentrations range of 5-150 µg.mL-1, 1-50 µg.mL-1 for ALK and HCT respectively. Regarding the spectrophotometric methods, two methods were employed. Simultaneous Equation method, absorbance readings are taken at two wavelengths 277.48 nm (for ALK) and 267.48 nm (for HCT) in methanol. Dual Wavelength method, the difference between absorbance readings are taken at two wavelengths 273.3 nm, 260 nm (for Aliskiren) and 270 nm, 280 nm (for HCT) in methanol. The applied spectrophotometric methods were found to be rapid, specific, precise and accurate over the concentration range of 5 – 150 µg.mL-1 and 1 – 41 µg.mL-1 for ALK and HCT respectively and can be applied for the routine analysis of these drugs in bulk, and combined dosage form without any interference by the excipients.
Science Publishing Corporation
2013-07-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/1099
10.14419/ijac.v1i2.1099
International Journal of Advanced Chemistry; Vol. 1 No. 2 (2013); 13-20
2310-2977
10.14419/ijac.v1i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1099/790
oai:ojs.pkp.sfu.ca:article/1174
2014-11-13T03:01:58Z
IJAC:ART
Comparison of the performances of two commercial membranes in hardness removal from underground water using Nanofiltration membranes
fatima, Elazhar
ELHABBANI, Redoune
Elazhar, Maryem
Hafsi, Mahmoud
Elmidaoui, AZZEDDINE
In this works, the comparison of the performances of two commercial membranes in hardness removal by nanofiltration in continuous mode was investigated from synthetic ground water of Maâmoura doped for various concentrations of TH (CaCl2, MgCl2). The experiments were carried out in the pressure range of 6–40 bars. Analyses of the samples, and permeates at different pressures, were performed and the effects of the trans-membrane pressure on the permeate flux and salt rejection were studied. Also the study presents the effect of salinity of the performances of two tested membranes (NF90 and NF270). Many configurations were tested: simple pass, double pass with one type of membranes and combination of two types of membranes. The pilot used (supplied by the French Company TIA) is an industrial nanofiltration pilot plant having two modules equipped with various spiral commercial membranes with an area of 7.6 m2.
Science Publishing Corporation
2013-08-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/1174
10.14419/ijac.v1i2.1174
International Journal of Advanced Chemistry; Vol. 1 No. 2 (2013); 21-30
2310-2977
10.14419/ijac.v1i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1174/814
oai:ojs.pkp.sfu.ca:article/1318
2014-11-13T03:01:59Z
IJAC:ART
Role of factors influencing on anaerobic process for production of bio hydrogen: Future fuel
Ravuri, Hema krishna
The process of anaerobic treatment is indeed more complex than the aerobic systems, and for this reason, the operation of an anaerobic treatment system should have a solid understanding of the important factors like temperature, pH, bicarbonate alkalinity, VFA, inorganic salts, sulfide soluble salts, in operation, heavy metals and nutrient requirement, in operation and control and are associated with the stability of the biological process involved. Thus the review was directed especially to these.
Science Publishing Corporation
2013-10-04
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/1318
10.14419/ijac.v1i2.1318
International Journal of Advanced Chemistry; Vol. 1 No. 2 (2013); 31-38
2310-2977
10.14419/ijac.v1i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1318/864
oai:ojs.pkp.sfu.ca:article/1370
2014-11-13T03:02:01Z
IJAC:ART
Mechanical and electrical behaviours of polybutylene terephthalate/ polyethylene terephthalate blend nanotube composites
Rajakumar, P.R.
Nanthini, R.
Polybutylene Terephthalate (PBT) / Polyethylene Terephthalate (PET) nanotube composite blend was fabricated using melt blending technique in a twin extruder. The blend composition was optimized at PBT-PET weight ratio of 80-20. The effect of incorporation of MWCNT on the mechanical, electrical properties of the nanotube composites blend has been investigated. Mechanical properties show marginal improvement in impact strength, but considerable improvement in tensile strength and flexural strength. Changes in electrical properties observed.
Science Publishing Corporation
2013-10-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/1370
10.14419/ijac.v1i2.1370
International Journal of Advanced Chemistry; Vol. 1 No. 2 (2013); 39-42
2310-2977
10.14419/ijac.v1i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1370/896
oai:ojs.pkp.sfu.ca:article/1531
2014-11-13T03:02:02Z
IJAC:ART
Biosorption of Ni (II) from aqueous solution using Acer saccharum leaves (ASL) as a potential sorbent
Ravuri, DR.Hemakrishna
Gilbert, W.B.
In this research work Powder of Acer Saccharum Leaves (PASL) were used as a non-conventional, cost-effective sorbent for removal of Ni (II) from aqueous solutions in batch systems. The sorbent was characterised with respect to surface area, pore volume, etc. It was found that PASL has high specific surface area (11.99 m2/g) and contains Ni (II) binding functional groups (e.g. Hydroxyl and Carboxyl).The biosorbent was characterized by FTIR, SEM and X-ray mapping, and the powder surface area was determined by BET. The optimum biosorption conditions were determined as a function of pH, biomass dosage, contact time, and initial metal ion concentration. The maximum Ni (II) biosorption was obtained at pH 4.0. The equilibrium data were better fit by the Langmuir isotherm and Freundlich isotherm models. The kinetic studies indicate that the biosorption process of the metal ion Ni (II) has followed well the pseudo-second order, avrami and intraparticle diffusion models. Keywords: Acer Saccharum Leaves (ASL); Adsorption; Adsorption kinetics; adsorption isotherms; Ni (II) ions.
Science Publishing Corporation
2013-12-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/1531
10.14419/ijac.v2i1.1531
International Journal of Advanced Chemistry; Vol. 2 No. 1 (2014); 1-5
2310-2977
10.14419/ijac.v2i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1531/965
oai:ojs.pkp.sfu.ca:article/1620
2014-11-13T03:02:03Z
IJAC:ART
Investigation on polyaniline enriched tin cerium phosphate thermally stable fibrous composite ion exchanger for environmental remediation
C., Janardanan
Valsaraj P, Vinisha
Abstract: We fabricate a novel ion exchanger of tin cerium phosphate, by incorporation of polyaniline conducting polymer by ex-situ polymerization method, as a potential candidate for environmental remediation based on the concept of composite material. The study showed its utility as ion exchanger in the separation chemistry. SEM image of composite showed its fiber like morphology. The distribution coefficient studies showed its selectivity towards Pb (II) and Bi (III) metal ions. The adsorption isotherm and kinetic study of dye adsorption on this material was carried out. This study implies that this hybrid material can be suggested as eco-friendly material for the environmental monitoring. Keywords: Adsorption, composite, ion exchanger, organic dye, polyaniline.
Science Publishing Corporation
2014-01-21
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/1620
10.14419/ijac.v2i1.1620
International Journal of Advanced Chemistry; Vol. 2 No. 1 (2014); 6-11
2310-2977
10.14419/ijac.v2i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1620/984
oai:ojs.pkp.sfu.ca:article/1624
2014-11-13T03:02:04Z
IJAC:ART
Molecular interaction studies in binary liquid mixture through ultrasonic measurements at 303.15k
Santhi, N.
Madhumitha, J.
The ultrasonic velocity (U), density (?) and viscosity (?) have been measured for the binary liquid mixtures containing 2-(p-methoxy phenylsulphonyl)-4-methyl sydnone in Ethanol at 303.15K. From these data some of acoustical parameters such as adiabatic compressibility (?), free length (Lf), acoustic impedance (Z), relative association (RA), relaxation strength (r), Rao’s constant (R), molar compressibility (W), relaxation time (?), Vander waal’s constant (b), free volume (Vf) and internal pressure (?i) have been computed using the standard relations. The results have been discussed in terms of molecular interactions. Keywords: Binary mixture, Molecular interaction, ultrasonic velocity, density, viscosity.
Science Publishing Corporation
2014-01-25
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/1624
10.14419/ijac.v2i1.1624
International Journal of Advanced Chemistry; Vol. 2 No. 1 (2014); 12-16
2310-2977
10.14419/ijac.v2i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1624/987
oai:ojs.pkp.sfu.ca:article/1625
2014-11-13T03:02:06Z
IJAC:ART
A study of internal pressures of ternary and sub-binary liquid mixtures at various temperatures
Santhi, N.
Alamelumangai, G.
Internal pressures of the ternary and sub-binary mixtures of Benzene (1) +Hexane (2) + n-Butanol (3) have been computed from ultrasonic velocity measurements at different mole fractions in the temperature range of 300C-450C. The present work has been carried out to study the variation of internal pressure with temperature and composition of polar binary mixtures. The equation proposed by Andiappan et.al, for evaluating internal pressures of binary liquid mixtures has been modified and extended in the present work for the Ternary systems. The internal pressures computed with the help of the modified relation shows close agreement with observed values. The absolute deviation between the calculated and observed values from 1.15% to 1.9% for the ternary system studied. Keywords: Ultrasonic velocity, density, molecular weight and internal pressure.
Science Publishing Corporation
2014-01-25
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/1625
10.14419/ijac.v2i1.1625
International Journal of Advanced Chemistry; Vol. 2 No. 1 (2014); 17-19
2310-2977
10.14419/ijac.v2i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1625/988
oai:ojs.pkp.sfu.ca:article/1628
2014-11-13T03:02:07Z
IJAC:ART
Synthesis, complexation, spectral and antimicrobial study of some novel 5-bromo-2-fluorobenzaldehydeoxime and semicarbazone under ultrasonic irradiation
Emayavaramban, M.
Kumar, K.
Mani, P.
Prabhakaran, B.
Muthuvel, A.
In this newly approached method a novel series of Transition metal complexes were synthesized by ultrasonic irradation. The reaction of 5-bromo-2-fluorobenzaldehydeoxime (L1OX) and 5-bromo-2-fluorobenzaldehydesenicarbazone (L2SC) by reaction with Cu(II) and pd(II)chloride salts. The complexes were characterized by elemental analysis, Ultraviolet, Infrared and NMR spectral studies. The antimicrobial activities of the ligand and its metal complexes were estimated. Keywords: Substituted Benz aldehyde, metals, complexes, antibacterial and antifungal activity.
Science Publishing Corporation
2014-01-25
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/1628
10.14419/ijac.v2i1.1628
International Journal of Advanced Chemistry; Vol. 2 No. 1 (2014); 20-23
2310-2977
10.14419/ijac.v2i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1628/989
oai:ojs.pkp.sfu.ca:article/1663
2014-11-13T03:02:08Z
IJAC:ART
Acoustical studies of some 1,3,4-thiadiazole derivatives in acetone at 303.15 k
Santhi, N.
Alamelumangai, G.
Some new 1, 3, 4-thiadiazole have been synthesized and characterized by IR and NMR spectra. Densities, viscosities and ultrasonic velocities of these compounds have been measured over the wide composition range at 303.15 K in acetone. From these data, various acoustical parameters were evaluated. Some these parameters are adiabatic compressibility, intermolecular free length, relaxation strength, relative association, Rao’s molar constant, salvation number etc. The behaviour of solutions of these compounds in acetone is explained from the evaluated parameters. Keywords: 1, 3, 4-Thiadiazole, density, velocity, Acetone, acoustical properties.
Science Publishing Corporation
2014-02-07
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/1663
10.14419/ijac.v2i1.1663
International Journal of Advanced Chemistry; Vol. 2 No. 1 (2014); 34-38
2310-2977
10.14419/ijac.v2i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1663/1005
oai:ojs.pkp.sfu.ca:article/1664
2014-11-13T03:02:09Z
IJAC:ART
Study the effects of calcinations and evolution of crystallographic parameters of two Tunisian natural phosphates
Chaabouni, Ahmed
Chtara, Chaker
Nzihou, Ange
El Feki, Hafed
Tunisian natural phosphate is a highly form of fluorapatite, carbonate fluorapatite, also known as “francolite”. The presence of carbonate in mineral phosphates influences their reactivity overlooked acid attack, but their presence requires a supplementary adding of sulfuric acid in the plants of production of phosphoric acid; and causing the formation of foams in the reactors during the addition of sulfuric acid. The presence of carbonates in high contents reduces the price value of phosphate rock. We propose in this work to study thermally the decomposition of two carbonated fluorapatite in a range of temperature between ambient and 1000°C; and the variation of the value of crystallographic parameters of the two samples of phosphate. The X-ray diffraction technique is used for this mineralogical study. By referring to the crystallographic parameters of the lattice of phosphate, we note that the increase in temperature decarbonated the francolite which is transformed largely to a fluoroapatite. In addition, it was reported that the first decarbonation is around 650°C translated the kinetics of decomposition of the carbonate ions of the type B associated with a vaccum, while the second decarbonation is around 1000°C and related to the thermal decomposition of the entity of CO3F, generated by the decomposition of carbonate ions of type B and A. The presence of these ions would be the result of a reorganization of the crystal lattice. Keywords: Carbonated fluoroapatite, effect of calcinations, mineralogical study, Tunisian natural phosphate, x-ray diffraction.
Science Publishing Corporation
2014-02-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/msword
http://www.sciencepubco.com/index.php/IJAC/article/view/1664
10.14419/ijac.v2i1.1664
International Journal of Advanced Chemistry; Vol. 2 No. 1 (2014); 24-26
2310-2977
10.14419/ijac.v2i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1664/1000
http://www.sciencepubco.com/index.php/IJAC/article/view/1664/17044
oai:ojs.pkp.sfu.ca:article/1703
2014-11-13T03:02:11Z
IJAC:ART
Visible light induced Knoevenagel condensation: A clean and efficient protocol using aqueous fruit extract of tamarindus indica as catalyst
Pal, Rammohan
Visible light induced a highly efficient and environmentally-friendly Knoevenagel condensation of various aliphatic and aromatic aldehydes with malononitrile has been achieved in excellent yield in presence of aqueous tamarind juice. The tamarind juice could be simply prepared from unripe fruit of Tamarindus indica in water and the reactions go to completion within 2-7 min. A plausible mechanism of light induced Knoevenagel condensation reaction catalyzed by tamarind juice was discussed. Keywords: Knoevenagel condensation, visible light, aqueous tamarind juice, aldehydes, malononitrile.
Science Publishing Corporation
2014-02-07
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/1703
10.14419/ijac.v2i1.1703
International Journal of Advanced Chemistry; Vol. 2 No. 1 (2014); 27-33
2310-2977
10.14419/ijac.v2i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1703/1003
http://www.sciencepubco.com/index.php/IJAC/article/view/1703/17046
oai:ojs.pkp.sfu.ca:article/1734
2014-11-13T03:02:12Z
IJAC:ART
Kinetics and mechanism of oxidation of GSH by cis-(diaqua)-bis-(ethylenediamine) Cobalt(III) ion
Mohanty, Bijaylaxmi
Behera, Jashoda
Acharya, Sridhara
Mohanty, Prakash
Patnaik, Ajay Kumar
The kinetics of GSH oxidation to GSSG by cis-(diaqua)-bis-(ethylenediamine) cobalt(III) perchlorate was studied spectophotometrically under pseudo-first order condition using 103[Co(III)] = 5 mol dm-3, 2.5 ? 102[GSH] ? 10.00 mol dm-3, 3.5 ? pH ? 5.0, 318K ? T ? 333K at a fixed ionic strength I = 0.3 mol dm-3 (NaClO4). The disappearance of [Co (III)] at 500 nm with time showed first-order kinetic trend. The first order dependence on [GSH] and pH was observed. Temperature dependence of the second order rate constant k'2 = kobs/[GSH] were analysed for the Co(III)-OH23+ (k1) and Co(III)-OH2+ (k2) reactivities. An outer-sphere complex formation between the Co(III) and GSH followed by one-electron transfer from GSH to Co(III) resulting the formation of Co(II) and GSx radical. The GSx radical undergoes fast dimerisation to GSSG. Activation parameters were calculated. These values favor the electron transfer reaction. Keywords: Co (III) complex, GSH, GSSG, Spectrophotometer, Redox reaction.
Science Publishing Corporation
2014-02-18
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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application/vnd.openxmlformats-officedocument.wordprocessingml.document
http://www.sciencepubco.com/index.php/IJAC/article/view/1734
10.14419/ijac.v2i1.1734
International Journal of Advanced Chemistry; Vol. 2 No. 1 (2014); 39-43
2310-2977
10.14419/ijac.v2i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1734/1023
http://www.sciencepubco.com/index.php/IJAC/article/view/1734/17048
oai:ojs.pkp.sfu.ca:article/1741
2014-11-13T03:02:14Z
IJAC:ART
Performances of electrodialysis process in desalination of brackish waters at various salinities and voltage
Fatima, Elazhar
Elazhar, Maryem
Hafsi, Mahmoud
Elmidaoui, Azzeddine
In the south Mediterranean countries and especially the North Africa, the water demands, since many decades, have increased while the conventional water availability has decreased dramatically. These trends continue. The obligation to use other non-conventional water resources such as desalinating water or waste water reuse becomes a necessity. Electrodialysis is a membrane process that competes with reverse osmosis for desalination and the removal of specific inorganic contaminants The experiments for desalination were carried out of various synthetic brackish waters containing 2, 4, 6, 8 and 10 g/l NaCl in order to determinate the operating conditions of electrodialysis process. The pilot used supplied by the Tokuyama Corp. The influence on the desalination performances of many running parameters such as voltage and salinities was investigated. These studies demonstrated that the electrodialysis is an effective method of being used to desalinate brackish water was well as water with higher salt concentrations up to about 10 g/L NaCl. Keywords: Electrodialysis, Performances, Membrane, Voltage, Salinities, Intensity.
Science Publishing Corporation
2014-02-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/1741
10.14419/ijac.v2i2.1741
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 49-52
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1741/1038
oai:ojs.pkp.sfu.ca:article/1851
2014-11-13T03:02:16Z
IJAC:ART
Green synthesis and antibacterial evaluation of some 2-pyrazoline derivatives
Santhi, N.
Emayavaramban, M.
Gopi, C.
Manivannan, C.
Raguraman, A.
A Chalcone (3) was prepared by the reaction of 4-methylbenzaldehyde (1) with 4-methylacetophenone (2) in methanolic sodium hydroxide result under ultrasonic irradiation in the water bath of a ultrasonic cleaner at room temperature. Treatment of this chalcone with thiosemicarbazide / semicarbazide hydrochloride / benzhydrazide / benzenesulphonyl hydrazide / phenylhydrazine hydrochloride managed the comparing 2-pyrazoline (4-8) in great yields. All the new mixes have been described by IR, 1H-NMR, 13CNMR ghostly information. All the target mixes were assessed for their in-vitro against antifungal in examination with as reference pill. Keywords: 4-Methylbenzaldehyde, 4-Methyl Acetophenone, Ultrasonic Irradiation, Chalcone, 2-Pyrazoline, Antibacterial.
Science Publishing Corporation
2014-03-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/1851
10.14419/ijac.v2i2.1851
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 53-58
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1851/1045
oai:ojs.pkp.sfu.ca:article/1863
2014-11-13T03:02:13Z
IJAC:ART
Evaluation of removal efficiency of cu (II) ion by activated carbon prepared from Nirgudi, Mudra and Gliricidia Sipium leaves from their aqueous solution
Bagwan, Mustaqeem Sharif
Patil, Paradip Rajaram
Present study deals with the removal of copper ions from aqueous solution by using activated carbon of natural leaves like Nirgudi (NAC), Mudra (MAC) and Gliricidia Sipium (GAC) leaves which is highly efficient, ecofriendly and locally available adsorbents. A series of experiments were conducted in a batch system to evaluate the effect of system variables. The effect of contact time, pH and the initial concentration of copper (II) solution were considered. The results show that the contact time 105 minutes for all adsorbent are sufficient to fit the equilibrium. The optimal adsorption pH for the adsorption of copper (II) ions is 7 for NAC, MAC and 8 for GAC adsorbents. The maximal quantities adsorbed by every adsorbent were 98.63 for NAC, 98.61 for MAC and 98.46 for GAC. Two isotherms models amongst which are Langmuir and Freundlich have been applied to the experimental data. The value of separation factor RL was found to be 0.01847, 0.02506 and 0.04477 for NAC, MAC and GAC respectively suggesting the isotherm to be favorable at the concentration studied. The Langmuir model best described the adsorption of copper (II) ions in aqueous solution by the selected adsorbents. Keywords: Adsorption isotherms, gliricidia cipium, mudra and, nirgudi.
Science Publishing Corporation
2014-02-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/1863
10.14419/ijac.v2i1.1863
International Journal of Advanced Chemistry; Vol. 2 No. 1 (2014); 44-48
2310-2977
10.14419/ijac.v2i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1863/1037
oai:ojs.pkp.sfu.ca:article/1981
2014-11-13T03:02:17Z
IJAC:ART
In vitro antioxidant, antimicrobial and phytochemical properties of wild banana [Ensete gilletii (E. A. J. DE Wildman)] seeds extract
Afolayan, Michael
Abubakar, Salisu
Adedayo, Adebiyi
Doyinsola, Idowu
Adebisi, Fagbohun
The proximate composition and phytochemical contents of wild banana seeds was examined. The seeds were also powdered and extracted with hexane, ethyl acetate and ethanol and each extract tested for its antimicrobial, antioxidant and phytochemical properties. The proximate analysis of the raw seeds showed that it contained carbohydrates – 68.41%, proteins – 11.16%, crude fibre – 1.1%, lipids – 6.27%, ash – 3.20% and moisture – 9.86% while its phytochemical investigation revealed the presence of carbohydrates, terpenoids, saponins, alkaloids, sterols and tannins. The antimicrobial screening was done using disc diffusion method with disc potency of 60µg/disc, 30µg/disc and 15µg/disc respectively and two groups of test organisms (bacteria and fungi) were used. The ethyl acetate and ethanolic extract were found to be effective on both groups of test organisms while the hexane extract did not show any activity on all the test organisms used. Concentrations of the plant extracts required for 50% inhibition of DPPH radical scavenging effect (IC50) were recorded as 8.67, 0.64, 0.31 and 0.14 mg/ml for the hexane fraction, ethyl acetate fraction, ethanol fraction and vitamin C respectively. Keywords: Antimicrobial, antioxidant, Ensete gilletii, phytochemical, proximate.
Science Publishing Corporation
2014-03-17
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/1981
10.14419/ijac.v2i2.1981
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 59-61
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/1981/1060
oai:ojs.pkp.sfu.ca:article/2028
2014-11-13T03:02:18Z
IJAC:ART
Purification of the textile finishing effluents by the ultrafiltration technique
Berradi, Mohamed
El Harfi, Ahmed
In the present paper, we synthesized, at first, an new permeable organic membrane based on a mixture of different percentages of pol-ysulfone (PSU), 4,4-sulfoxylphenol S, expanded polystyrene in a solvent that is N, N-dimethylformamide (DMF), and at the end, we treated the liquid effluents from the textile finishing industry by this membrane. The latter was characterized at the first step by the hydrodynamic conditions of the ultrafiltration technique and in a second step by microscopic tools. The achieved results concerning the microscopic characterization of the synthesized membrane show that the chemical structure of the membrane is composed of three previous components (PSU/BS/PSe), but those related to wastewater treatment show that the rate of discoloration measured for the wastewater charged with indigo is the order of 87.24% and measured for the black sulphur is the order of 64.04%. Keywords: Permeable Organic Membrane, Ultrafiltration, Hydrodynamic and Microscopic Characterization.
Science Publishing Corporation
2014-03-21
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/2028
10.14419/ijac.v2i2.2028
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 62-65
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/2028/1064
oai:ojs.pkp.sfu.ca:article/2114
2014-11-13T03:02:19Z
IJAC:ART
Acoustic and volumetric properties of aqueous solution of levofloxacin nickel complexes at 308K
Das, Monalisa
Das, Smrutiprava
Patnaik, Ajaya
The density and ultrasonic velocity were measured for aqueous solutions of nickel complex and its ternary complex with 1,10-phenanthroline at 308 K. Using the experimental data, adiabatic compressibility , acoustic impedance , intermolecular free length and hydration number , apparent molar volume , limiting apparent molar volume , apparent molar compressibility , limiting apparent molar compressibility and their associated constants were calculated. These parameters were used to study the ion-solvent interaction in each solution. Keywords: Ultrasonic Velocity, Hydration Number, Adiabatic Compressibility, Apparent Molar Volume, Apparent Molar Compressibility.
Science Publishing Corporation
2014-04-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/2114
10.14419/ijac.v2i2.2114
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 66-69
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/2114/1088
oai:ojs.pkp.sfu.ca:article/2203
2014-11-13T03:02:20Z
IJAC:ART
Extraction and physicochemical analysis of some selected seed oils
Afolayan, Michael
Fausat, Akanji
Idowu, Doyinsola
Oil was extracted from the seeds of groundnut, melon and Moringa oleifera. The physicochemical properties of groundnut oil, melon oil and moringa oil were determined. The acid value obtained was 9.76 mgKOH/g, 7.85 mgKOH/g and 1.91 mgKOH/g for moringa, melon and groundnut oil respectively. The Iodine value was found to be 35.85 mg/g, 83.75 mg/g and 59.64 mg/g for moringa, melon and groundnut oil respectively. The Peroxide values were moringa oil - 13.80 meq/kg, melon oil - 5.60 meq/kg and groundnut oil - 10.80 meq/kg. Unsaponifiable matter values were moringa oil - 8.59 g/kg, melon oil - 2.18 g/kg, groundnut oil - 5.77 g/kg while the saponification values were moringa oil - 155.68 mgKOH/g, melon oil - 180.92 mgKOH/g and groundnut oil - 168.30 mgKOH/g. The volatile matter in the oils was found to be 0.06. 0.07 And 0.04 in groundnut, melon and moringa oil respectively. All the oils were pale yellow in colour and liquids at room temperature. The results obtained from the physicochemical characterization of the oils shows that moringa oleifera seed oil compares favourably with the other oils and has high potentials for use both as domestic oil and as industrial oil. Keywords: Groundnut, Melon, Moringa Oleifera, Oil, Physicochemical.
Science Publishing Corporation
2014-04-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/2203
10.14419/ijac.v2i2.2203
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 70-73
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/2203/1092
oai:ojs.pkp.sfu.ca:article/2301
2014-11-13T03:02:22Z
IJAC:ART
Pharmacologically potentials of hydrazonone containing compounds: a promising scaffold
Asif, Mohammad
Hydrazones considered as an important class of compounds for new drug development. Hydrazones are present in many of the bioactive compounds having wide interest because of their diverse biochemical applications. This created interest in researchers to developed variety of hydrazone compounds with effective biological activities. Therefore many compounds have been developed as target structures for their biological activities. This review is focus on the diverse biological activities of hydrazones. Keywords: Hydrazones, Biological Activities, Azomethine, Pharmacological Potential.
Science Publishing Corporation
2014-07-04
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/2301
10.14419/ijac.v2i2.2301
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 85-103
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/2301/1232
oai:ojs.pkp.sfu.ca:article/2393
2014-11-13T03:02:23Z
IJAC:ART
Effect of spark plasma sintering process on the microstructure and mechanical properties of Nano crystalline hydroxyapatite ceramics prepared by hydrolysis in polyol medium
Mechay, Abderrahmen
Elfeki, Hafed
Schoenstein, Fréderic
Tétard, Florent
Jouini, Noureddine
The aim of the study was to investigate the role of microstructure and porosity on the mechanical behaviour of sintered hydroxyapatite synthesized by polyol process. This process describes a new approach for the synthesis of hydroxyapatite nanoparticles, which involves precipitation and hydrolysis reactions conducted in polyol medium. In the present work a non-conventional technique, spark plasma sintering, was used to consolidate such nanocrystalline apatites at non-conventional, very low temperatures (T < 300°C) so as to preserve the surface hydrated layer present on the nanocrystals. The hydroxyapatite nanoparticles have been successfully conducted by spark plasma sintering process, resulting in a dense HA compacts. Besides, the sintering behaviour of hydroxyapatite powders at different temperatures ranging was studied. The microstructure, Vickers microhardness, nanoindentation and density are described. Finally, the resulting mechanical properties determined on the microwave sintered samples (E = 136 ±4 GPa, HV = 8.2 GPa, and KIC= 1.6 ±0.03 MPa m1/2) are significantly higher than those usually reported in the literature, whatever the sintering process, and could allow the use of hydroxyapatite for structural applications. Keywords: Hydroxyapatite; Polyol; Spark Plasma Sintering; Mechanical Properties.
Science Publishing Corporation
2014-06-18
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
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application/vnd.openxmlformats-officedocument.wordprocessingml.document
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application/vnd.openxmlformats-officedocument.wordprocessingml.document
http://www.sciencepubco.com/index.php/IJAC/article/view/2393
10.14419/ijac.v2i2.2393
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 80-84
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/2393/1204
http://www.sciencepubco.com/index.php/IJAC/article/view/2393/17090
http://www.sciencepubco.com/index.php/IJAC/article/view/2393/17091
http://www.sciencepubco.com/index.php/IJAC/article/view/2393/17092
http://www.sciencepubco.com/index.php/IJAC/article/view/2393/17093
http://www.sciencepubco.com/index.php/IJAC/article/view/2393/17094
oai:ojs.pkp.sfu.ca:article/2619
2014-11-13T03:02:25Z
IJAC:ART
Development and validation of UV spectrophotometric method for simultaneous estimation of nitrate and nitrite in water, soil, drug and vegetable samples
Nemade, Kanchan Sudhakar
Attarde, Sanjay
A sensitive and specific spectrophotometric method has been developed for the simultaneous determination of nitrate and nitrite at trace levels. The proposed method is based on diazotization of nitrite with a pharmaceutical compound-metoclopramide (4-amino-5-chloro-N-(2-(diethylamino)ethyl)- 2-methoxybenzamide) in acid medium to form diazonium ion which is coupled with ethyl acetoacetate (EAA) in basic medium to form azo dye, showing absorption maxima at 437.5 nm. Different variables affecting the reactions are optimized. The method is precise and accurate and has been applied to water, soil, drug and vegetable samples. The results of the investigated method using metoclopramide were compared with available official literature method. The results obtained by the proposed method agree well with the standard established method. Keywords: Diazotization, Nitrate and Nitrite, Spectrophotometric Estimation.
Science Publishing Corporation
2014-06-10
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/2619
10.14419/ijac.v2i2.2619
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 74-79
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/2619/1185
oai:ojs.pkp.sfu.ca:article/2661
2014-11-13T03:02:26Z
IJAC:ART
The anticancer potential of various substituted pyridazines and related compounds
Asif, Mohammad
Pyridazine nucleus exhibited immense pharmacological activities. Pyridazine nucleus is present in various compounds that possess remarkable pharmacological activities. Various pyridazinone compounds have antitumor activity. Some of them pyridazinone derivatives bearing different moieties were exhibited excellent anticancer activity toward human cancer cell lines. They showed remarkable activity against leukemia, non-small cell lung cancer, colon, central nervous system, melanoma, ovarian and breast cancer cell lines. These compounds were act by different mechanism. Keywords: Pyruvate Kinase; Anti-Cancer; Pyridazines; Biological Activities; Cytotoxicity.
Science Publishing Corporation
2014-09-15
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/2661
10.14419/ijac.v2i2.2661
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 148-161
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/2661/1358
oai:ojs.pkp.sfu.ca:article/2926
2014-11-13T03:02:27Z
IJAC:ART
Novel gadolinium complexes in aqueous solution : characterization, identification and probable structures
Riri, Mohammed
Benjjar, Abdelkhalek
Kamal, Oussama
Hor, Mustapha
Touaj, Khalifa
Hlaibi, Miloudi
In this work, we shall present the results of investigations on the interaction of the gadolinium ion (Gd3+) with different chelation sites of mandelic acid and DL-serine (amino acid) formed in dilute solution for pH values between 5.50 and 7.50. The general formula of these new organometallic complexes is and (mandelate ions and: serine ions). These gadolinium complexes detected, are colorless and have no absorption band UV–visible. In this sense, we have used an analytical technique called « Indirect Photometry Detection (IPD) » have identified major di-nucleaire and tri-nuclear complexes of these acids. This technique allowed us to determine the composition and stabilities of complexes predominate in solution, giving for these colorless complexes a molar ration (2:2) and (3:2) for mandilic acid and serine acid respectively, and we have shown that the composition and stability constant depends on the acidity of the medium. To complement previous results and to propose probable structures for these new coloress complexes, IR and Raman spectroscopy have been conducted to identify the different chelation sites for theses ligands. Keywords: Coloress Complexes, DL-Serine, Indirect Photometry Detection, Gadolinium Complexes, Mandelate Ions.
Science Publishing Corporation
2014-09-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/2926
10.14419/ijac.v2i2.2926
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 130-138
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/2926/1324
oai:ojs.pkp.sfu.ca:article/2947
2014-12-20T03:16:34Z
IJAC:ART
Ultrasonic studies of \(Ni(NO_3)_{2}.6H_{2}O\) in glycol + water solvent at 303.15 K
Patnaik, Ajaya
Mishra, Sashibhusan
Various acoustic parameters such as isentropic compressibility \((\beta_s)\), intermolecular free length (Lf), apparent molar volume \((\Phi_v)\), apparent molar compressibility \((\Phi_k)\), molar compressibility (W), molar sound velocity (R), acoustic impedance (Z) of Ni(NO3).6H2O in 10%, 20% and 30% Glycol + Water at 303.15K have been determined from ultrasonic velocity (U), density (p) and relative viscosity \((\eta_r)\) of the solution. These parameters are related with the molar concentration of the solution and reflect the distortion of the structure of the solvent i.e. Glycol + Water.Keywords: Ultrasonic Velocity, Acoustic Parameter, Density, Relative Viscosity, Glycol + Water.
Science Publishing Corporation
2014-07-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/2947
10.14419/ijac.v2i2.2947
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 104-108
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/2947/1236
oai:ojs.pkp.sfu.ca:article/3046
2014-11-13T03:02:29Z
IJAC:ART
Investigation of immobilization and hydrolytic properties of pectinase onto chitosan-PVA copolymer
Kaur, Inderjeet
Gupta, Reena
Lakhanpal, Anupam
Kumar, Atul
Copolymer based on natural polysaccharide, Chitosan, Chs and synthetic polymer, poly vinyl alcohol, PVA was synthesized using ammonium persulfate as radical initiator and sodium bicarbonate as foaming agent. Reaction conditions were optimized based on swelling percentage of copolymer. The copolymer, (Chs-co-PVA), was characterized by FTIR, SEM and XRD methods and was used as a support for immobilizing pectinase. The immobilized enzyme was found to be more stable than free enzyme and has a good binding efficiency (88.29%) with the copolymer. The effect of temperature, pH and metal ions on the activity of the bound enzyme towards hydrolysis of poly-?-(1-4)-D-galacturonic acid (PGA) was investigated. Keywords: Chitosan-PVA Copolymer, Pectinase, Immobilization, Hydrolysis, Polygalacturonic Acid.
Science Publishing Corporation
2014-08-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/3046
10.14419/ijac.v2i2.3046
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 117-123
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3046/1281
oai:ojs.pkp.sfu.ca:article/3054
2014-11-13T03:02:31Z
IJAC:ART
Determination of doxazosin in different matrices: a review
Shrivastava, Alankar
Jain, Manali
Varshneya, Rakhee
Doxazosin mesylate is used in the management of hypertension and benign prostatic hyperplasia. It is one of the important alpha one adrenoreceptor blocker. Alpha one adrenoreceptor blockers are most preferred therapy for symptomatic relief of benign prostatic hyperplasia. In this review analytical methods for the determination of doxazosin in different matrices are discussed. Analytical methods are classified in to spectrophotometry, chromatography and electroanalytical methods. This literature is also focused on advantages, disadvantages of different analytical methods. This review article is an attempt to provide information to the scientists engaged in research related to doxazosin. Keywords: Benign Prostatic Hyperplasia, Doxazosin Mesylate, Analytical Methods, Spectrophotometry, Chromatography, Electro analytical Methods.
Science Publishing Corporation
2014-07-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/3054
10.14419/ijac.v2i2.3054
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 109-116
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3054/1275
oai:ojs.pkp.sfu.ca:article/3130
2014-11-13T03:02:32Z
IJAC:ART
Kinetics and mechanism of oxidation of cetirizine hydrochloride, an anti-allergy agent by Mn(VII) in acidic medium
Panda, J.
Patnaik, Ajaya Kumar
Pradhan, G. C.
Mohanty, P.
The kinetics and mechanism of oxidation of cetirizine hydrochloride by Mn(VII) in acidic medium was studied spectrophotometrically. The electron transfer reaction between MnO4- and the drug have been studied over the range 2.0 ? 103 [cetirizine hydrochloride] ? 6.0, 2.5 ? pH ? 4.5 and 295 K ? T ? 313 K in aqueous medium. The electron transfer reaction shows first order dependence in [MnO4-] T and [cetirizine hydrochloride]. The rate of the reaction was found to increase with increasing pH of the medium. The conjugate base of the reactant drug and MnO4- reacts to produce products. The activation parameters ?H? (kJ mol-1) and ?S? (JK-1 mol-1) for the electron transfer reaction was found to be 33.93 and -143.00. The product of the reaction was cetirizine N-oxide. Keywords: Cetirizine, Oxidation, Kinetics, Cetirizine N-Oxide, Spectrophotometer.
Science Publishing Corporation
2014-08-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/3130
10.14419/ijac.v2i2.3130
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 124-129
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3130/1310
oai:ojs.pkp.sfu.ca:article/3213
2014-11-13T03:02:33Z
IJAC:ART
Spectrophotometric determination of the stability constant of vanadium(v)-p-chloro-N-phenyl-p-chlorobenzo- hydroxamic acid complex
Abualreish, Mustafa
Al msiedeen, A.M.
The stability constant of the complex vanadium(v) p-chloro-N-Phenyl-p-chlorobenzohydroxamic acid was determined spectropho-tometrically. The ligand p-chloro-N-phenyl-p-chloro-benzohydroxamic acid abbreviated in this paper as PCNPPCBHA was synthesized by the coupling of equimolar solutions of p-chlorobenzoyl chloride and freshly prepared p-chloro-ß-phenyl hydroxylamine; in which the later was prepared by the reduction of p-chloronitrobenzene with zinc powder. The pH at maximum extraction of the ligand PCNPPCBHA to the metal vanadium(v) and the ratio of the ligand: metal , were determined. Keywords : Spectrophotometric determination , Vanadium(V) , p - chloro - N - phenyl - p - chloro-benzohydroxamic acid.
Science Publishing Corporation
2014-09-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/3213
10.14419/ijac.v2i2.3213
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 162-165
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3213/1364
oai:ojs.pkp.sfu.ca:article/3217
2015-05-30T14:31:50Z
IJAC:ART
Synthesis of Nitrogen-Containing Chalcone Via One-Pot Three-Component Reaction . part ii
Abualreish, Mustafa
Ljaleel, Anwar E. M. Nor E.
Fadul, Himat M. A.
Ayuob, Saad M. H.
Abdel Karim, M.
Van Der Westhuizen, Jan H. Van Der Westhuizen
Chalcone
3-Hydroxybenzaldehyde
4-Methoxyacetophenone
Aminomethylation
Formaldehyde
N-Methylpiperazine.
The compound 3-Hydroxy-4'-methoxychalcone (1) was prepared by reacting 3-hydroxybenzaldehyde with 4-methoxyacetophenone.The aminomethylation of this chalcone was accomplished by reaction with formaldehyde and N-methylpiperazine in dry acetonitrile to Obtain 3-hydroxy-4'-methoxy-4-(N-methyl-piperazinomethyl) chalcone (2) and 3-hydroxy-4'-methoxy-2,4-bis-(N-methylpiperazinomethyl)chalcone(3). The products were purified by column and thin layer chromatography and were identified along with their intermediates by spectroscopic methods: UV, IR, NMR and mass spectrometry.
Science Publishing Corporation
2014-12-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/3217
10.14419/ijac.v3i1.3217
International Journal of Advanced Chemistry; Vol. 3 No. 1 (2015); 1-5
2310-2977
10.14419/ijac.v3i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3217/1511
http://www.sciencepubco.com/index.php/IJAC/article/view/3217/17186
Copyright (c) 2014 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/3272
2014-11-13T03:02:34Z
IJAC:ART
Inhibition effect of potassium iodide on the corrosion of carbon steel (XC 38) in acidic medium
Attar, Tarik
Larabi, Lahcène
Harek, Yahia
The effect of potassium iodide (KI) on the corrosion of carbon steel (XC38) in 0.5 M H2SO4 has been investigated in relation to the con-centration of the inhibitor by weight loss measurement. It was found that the inhibition efficiency increases with an increase in concentration of inhibitors and temperature. The effect of temperature on the corrosion behavior with the addition of optimal concentration of KI was studied in the temperature range 293-323 K. The adsorption of the inhibitor on the XC38 surface is in agreement with Temkin adsorption isotherm. On the bases of thermodynamic adsorption parameters, it can be interpreted that the adsorption of this inhibitor on the carbon steel surface takes place through both chemical and physical adsorption. Keywords: Corrosion Inhibition, Weight Loss, Carbon Steel, Adsorption Isotherm, Thermodynamic Parameters.
Science Publishing Corporation
2014-09-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/3272
10.14419/ijac.v2i2.3272
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 139-142
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3272/1346
oai:ojs.pkp.sfu.ca:article/3333
2014-11-13T03:02:35Z
IJAC:ART
Pervaporative transfer modeling through dense membranes validation of the scattered packet method
Essamri, Azzouz
El Gouri, Rachid
Zouair, F.Z
Cheikhi, Nabil
Hlou, Laamari
The study of the diffusion through a homogeneous dense film, covers practically and theoretically a fundamental interest. In pervaporation (membrane separation process) the diffusion is the limiting step in the operation of the transfer and thus directly influences the performance of the membrane. The knowledge of the diffusion coefficient of an aqueous solution in a membrane makes it possible to elucidate the mechanism of this elementary step of pervaporation. Several methods were used to determine the diffusivity of a compound through a dense membrane (differential permeation, kinetic of sorption). In this work, we tried to validate the method of the scattered packet. It is about a digital method, of cellular automaton, which produces really the process of diffusion through a membrane using the second law of Fick in which the diffusion coefficient is considered constant. Permeation flux data obtained by simulation allowed validating this method. By using the method of relaxation time and the method of maximum slope, can thus determine the coefficient of diffusion of diffusing species through the membrane. Keywords: Diffusivity, Membrane, Pervaporation, Scattered Packet Method.
Science Publishing Corporation
2014-09-12
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/3333
10.14419/ijac.v2i2.3333
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 143-147
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3333/1353
oai:ojs.pkp.sfu.ca:article/3338
2014-11-13T03:02:36Z
IJAC:ART
Synthesis, characterization, antimicrobial, analgesic and CNS studies of Schiff base cu(II) complex derived from 4-choro-o-phenylene Diamine
Deivanayagam, Piramanayagam
Bhoopathy, Parasuraman
Thanikaikarasan, Sethuramachandran
Schiff base ligand and its Cu (II) Complex had been synthesized by the condensation reaction of 4-chloro-o-phenylene diamine and 2-hydroxy acetophenone. The Structure and spectral properties of ligand and complex were confirmed by UV, FT-IR and 1H NMR Spectroscopy. The spectral properties showed that it was a square planar geomentry with a tetradentate ligand. The Schiff base Cu (II) Complex was subjected to antimicrobial studies. In this paper I have taken to discuss these three bactericidal organisms such as Bacillus subtilis, Streptococcus viridians and Staphylococcus epidermidis on the test compounds. Schiff base Copper (II) complex were screened by employing the Disc Diffusion method. A concentration gradient (5, 10, 20 and 30mg/ml) of each compound was put into study. From the study, it was observed that it showed a maximum zone of inhibition. The Schiff base complex were subjected to analgesic studies and it showed a significant increase in analgesic activity when compared with normal saline. The Schiff base complex was subjected to CNS studies and it showed a depressant activity when compared with standard drug chlorpromazine. Keywords: Schiff Base, 4-Chloro-O-Phenylene Diamine, Electronic Spectroscopy, Petri Plates and CNS.
Science Publishing Corporation
2014-10-03
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/msword
http://www.sciencepubco.com/index.php/IJAC/article/view/3338
10.14419/ijac.v2i2.3338
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 166-170
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3338/1404
http://www.sciencepubco.com/index.php/IJAC/article/view/3338/17191
oai:ojs.pkp.sfu.ca:article/3496
2014-11-13T03:02:37Z
IJAC:ART
Proximate composition, mineral and phytochemical constituents of Eleusine coracana (finger millet)
Bwai, Macham
Afolayan, Michael
Odukomaiya, Doyinsola
Abayomi, Orishadipe
The proximate composition, mineral and phytochemical constituents of Eleusine coracana (finger millets) was evaluated with the aim of providing data that will guide the effective utilization of it under exploited seed in food application. The proximate composition revealed the presence of moisture (6.99%), ash (2.37%), crude protein (10.28%), crude fibre (3.10%), crude lipid (0.83%) and carbohydrate (76.43%). The mineral composition revealed potassium (14.19 mg/g), sodium (6.86 mg/g), copper (0.10 mg/g), calcium (1.13 mg/g), magnesium (6.25 mg/g), zinc (0.22 mg/g), manganese (0.32 mg/g), Iron (0.11 mg/g), lead (0.001 mg/g) and Na/K 0.48. The phytochemical constituents present were tannins, steroids, phenols, alkaloids, terpenoids, cardiac glycosides and balsams. These results revealed that the seeds of Eleusine coracana (finger millet) contained essential nutrients which compete favourably well with those of other seeds in literature and it is suitable for health benefits and for use in herbal medicine to combat different diseases. Keywords: Eleusine Coracana, Finger Millet, Mineral Composition, Phytochemical, Proximate, Seed.
Science Publishing Corporation
2014-10-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/3496
10.14419/ijac.v2i2.3496
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 171-174
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3496/1418
oai:ojs.pkp.sfu.ca:article/3514
2014-11-13T03:02:38Z
IJAC:ART
Phytochemical sreening, proximate analysis and mineral composition of some leafy vegetables consumed in Nigeria
Idoko, Owoicho
Emmanuel, Stella
Aguzue, Ooyinye
Fausat, Akanji
Osuagwu, Ifeanyi
Asuquo, Thomas
Phytochemical screening, proximate analysis and mineral composition of nine leafy vegetables; Teifaria occidentalis, Veronia amygdalina, Ocinum gratissimum, Corchorus olitorius, Piper guineese, Amaranthus hybridus Talinum triangulare, Gnetum africanum and Murraya koenigii was carried out using standard methods. The proximate analysis results showed that the moisture, ash, crude lipid, crude fibre, crude protein and carbohydrate ranged as followed; 10.20 to 15.17%, 6.65 to 28.33%, 1.44 to 11.29%, 0.52 to 2.33% 2.24 to 35.21% and 22.66 to 62.80% respectively. The mineral composition results showed that on the average, highest concentration of calcium was recorded in the range of 838 to 1258mg/100g, while Cr was found to be the least with concentration range of 0.19 to 0.48mg/100g. Cd was absent in all the samples. The phytochemical screening results also showed the presence of tannin, alkaloids and carbohydrate in all the leafy vegetables. The result of this study indicates that the leafy vegetables could be a good supplement for some the nutrients and elements analyzed. Keywords: Leafy Vegetables, Mineral Composition, Phytochemicals, Proximate Analysis.
Science Publishing Corporation
2014-10-14
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/3514
10.14419/ijac.v2i2.3514
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 175-177
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3514/1422
oai:ojs.pkp.sfu.ca:article/3519
2014-11-13T03:02:39Z
IJAC:ART
Tetrahydroanthracene Derivative: Anti-microbial Isolate from Acanthospermum hispidum DC
Olawumi, Olajide
Ibrahim, Oladosu
Christianah, Fakunle
The leaves and stems of Acanthospermum hispidium were extracted with distilled ethanol using cold extraction and concentrated using a rotary evaporator at 37 0C. The crude extract was partitioned successively using hexane, benzene and methanol. Fractions 19, 20 and 21 purified on Sephadex LH-20 gave a compound elucidated to be 1, 3, 6, 8-tetrahydroxyl-9-anthracene carbonaldehyde, using the state-of-art tools of spectrometry. The results of the antimicrobial test on the isolated compound show activity against P. mirabilis, B. subtilis, P. aeruginosa, C. albican, S. typhi and B. cereus at minimum inhibitory concentration (MIC) value of 100ppm. Keywords: Acanthospermum hispidum, Anthracene Carbonaldehyde, Antimicrobial Test, Minimum Inhibitory Concentration.
Science Publishing Corporation
2014-10-20
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/3519
10.14419/ijac.v2i2.3519
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 182-184
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3519/1433
oai:ojs.pkp.sfu.ca:article/3549
2014-11-13T03:02:40Z
IJAC:ART
Chemical composition and phytochemical properties of mango (mangifera indica.)seed kernel
Orijajogun, Joyce
Batari, Latayo
aguzue, onyinye
Aguzue, Onyinye
The seed kernel of (Mangifera indica) obtained from Kwali FCT,Abuja were studied for the phytochemical,proximate analysis and mineral composition. The proximate composition reveals; moisture (5.9%), Ash (2.43%), crude protein (5.20%), carbohydrate (76.14%) and crude fibre (0.49%).The result of the mineral composition showed potassium (116.9ppm), sodium (23.1ppm), calcium (0.26ppm) and magnesium (0.56ppm). The result of phytochemical studies of extract show the presence of alkaloids, steroids, tannins, phenol, resins, glycoside and volatile oil but saponins and phlobatannins are absent. The presence of some of these metabolites confirms the usefulness of the plant in the treatment of various diseases. Keywords: Mangifera Indica, Phytochemical, Proximate Composition and Metabolites.
Science Publishing Corporation
2014-10-21
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/3549
10.14419/ijac.v2i2.3549
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 185-187
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3549/1439
oai:ojs.pkp.sfu.ca:article/3568
2014-11-13T03:02:41Z
IJAC:ART
Antibacterial activity and phytochemical evaluation of the leaf root and stem bark extracts of parinari curatellifolia (planch. ex benth)
Chukwudi, Ugoh
Ayodeji, Fatokun
Amos, Jimba
olawunmi, Olajide
The different parts (leaf, root and stem bark) extracts of Parinari curatellifolia were studied to assess phytochemicals, antimicrobial activities and to confirm their traditional medicinal uses. Phytochemical screening of the crude extracts (leaf, root and stem bark) showed the presence of phenols, flavoniods, sterols, terpenoids, carbohydrates and saponnins. The crude extracts were screened for antimicrobial activity against three bacteria, Staphylococcus aureus, Streptococcus mutans and Lactobacillus spp. The minimum inhibitory concentration (MIC) of the methanol extract gave the highest zones of inhibition against the isolates used which revealed activities against S. aureus S. mutans and Lactobacillus spp. The biologically active methanol extract was purified using flash column chromatography. The two fractions (ME1 and ME2) were obtained from the column. Fraction ME1 gave the highest zone of inhibition ranging from 24±0.6 mm to 28±0.0 mm against S. mutans. This is significantly (P?0.05) different from the crude methanol extract with the zone of inhibition ranging from 23±0.00 mm to 26±0.90 mm. The activities of crude extracts were lower compared to that of the separated fractions. Keywords: Use about five key words or phrases in alphabetical order, Separated by commas.
Science Publishing Corporation
2014-10-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/3568
10.14419/ijac.v2i2.3568
International Journal of Advanced Chemistry; Vol. 2 No. 2 (2014); 178-181
2310-2977
10.14419/ijac.v2i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3568/1431
oai:ojs.pkp.sfu.ca:article/3974
2015-05-30T14:31:50Z
IJAC:ART
Stability constants and stoichiometries of chromium and zirconium carboxylates complexes calculated by four comparative methods
Omar, Abdalazeem
Ali, Elmugdad
Half integral method
Henderson equation
Stability constants
Excel program
activity.
Four comparative methods for determination of stoichiometries and stability constants of chromium and zirconium complexes with citric and propanoic acids were studies, in purpose to select the most accurate and sensitive method, and to compare the formation of complexes of these two transition metals. (Cr 1st transition series group 6B, Zr 2nd transition series group 4B)Metal-ligand stability constants and stoichiometries of the above systems were determined by Calvin & Bjerrum pH-metric titration technique as adopted by Irving & Rossotti.Four methods employed were point-wise calculation method, half integral method, linear plot method and least squares method. The result seems in a good agreement with each other and any method can represents the other.
Science Publishing Corporation
2015-01-07
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/3974
10.14419/ijac.v3i1.3974
International Journal of Advanced Chemistry; Vol. 3 No. 1 (2015); 6-13
2310-2977
10.14419/ijac.v3i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/3974/1558
Copyright (c) 2015 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/4015
2015-05-30T14:31:50Z
IJAC:ART
Proposal of an international harmonized analytical technique for quantifying of residual acetamiprid and imidacloprid in wheat
Furusawa, Naoto
International Harmonized Analytical Method
Acetamiprid
Imidacloprid
Centrifugal Monolithic Silica Spin Mini-Column.
This paper proposes an international harmonized analytical method for residual monitoring of selected neonicotinoids in crops and presents a fast, easy, and space-saving technique of sample preparation followed by a 100% water mobile phase high-performance liquid chromatography (HPLC) coupled photo-diode array detector (PDA) for quantifying acetamiprid (ATP) and imidacloprid (ICP) in wheat. The analytes were extracted from the sample using a handheld ultrasonic homogenizer with water, and purified by MonoSpin® C18-CX, a centrifugal monolithic silica spin mini-column, and quantified within 20 min/sample. The accuracy, precision, and system suitability are well within the international method acceptance criteria.
Science Publishing Corporation
2015-01-20
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/pdf
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/4015
10.14419/ijac.v3i1.4015
International Journal of Advanced Chemistry; Vol. 3 No. 1 (2015); 14-17
2310-2977
10.14419/ijac.v3i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/4015/1579
http://www.sciencepubco.com/index.php/IJAC/article/view/4015/17224
http://www.sciencepubco.com/index.php/IJAC/article/view/4015/17225
Copyright (c) 2015 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/4328
2015-05-30T14:31:50Z
IJAC:ART
Comparative analyses of Nigerian and US corn Stalks, using PY-GC/MS
Eseyin, Anthonia E.
Hassan, El Barbary
El-Giar, Emad, M
Bio-Oil
Fast pyrolysis
Nigerian corn stalks
US corn stalks
PY-GC/MS
and Valuable chemicals.
Pyrolysis gas chromatography mass spectrometry (Py-GC/MS) studies were carried out on the Nigerian and US corn stalks at 500 °C. Analyses of the fast pyrolysis products showed that the Nigerian corn stalks produced more diverse compounds like: acetaldehyde, acetic acid methyl ester, 2,3-pentanedione, 1-hydroxy-2-butanone, butanedial, phenol and vanillin. On the other hand, the pyrolyzed US corn stalks produced compounds like: furfural, phenol, 2-methoxy, 2-methylbenzaldehyde, and 2-methoxy-4-vinylphenol which had significantly high peak area percentages. Few anhydrous sugars were detected in the pyrolysis products of both samples. Both samples were found to be good biomass for the production of bio-oil and chemicals. However, the Nigerian corn stalks seem to be more suitable for the production of bio-oil while the US corn stalks seem to be more suitable for the production of valuable chemicals.
Science Publishing Corporation
2015-04-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/4328
10.14419/ijac.v3i1.4328
International Journal of Advanced Chemistry; Vol. 3 No. 1 (2015); 18-24
2310-2977
10.14419/ijac.v3i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/4328/1686
Copyright (c) 2015 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/4372
2015-05-30T14:31:50Z
IJAC:ART
Potentiometric studies on complexes of Cr (â…¢) and Zr (IV)with some carboxylic acids
Omar, Abdalazeem
Ali, Elmugdad
Oxalacetic Acid
Point-Wise
Stability Constants
Least Squares Method.
The present work, deals with the study of proton-ligand (pK) and metal-ligand (logK) of acetic acid, oxalic acid, and oxalacetic acid with Cr (â…¢) and Zr (IV) by potentiometric titration technique. The stoichiometries and stability constants of these complexes were evaluated, usingCalvin-Bjerrum pH-titration technique as adopted by Irriving and Rossotti.Graphic and algebraic methods have been employed, for determination of the stability constants, in purpose to select the most accurate and sensitive method. Furthermore, aiming to determine, the factor that effectingthe precision of those methods under investigation, and to compare the complexes of these ligands with first and second series transition elements of D-block Cr and Zr taken as an example. The obtained results were in a good agreement with each other.
Science Publishing Corporation
2015-04-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/4372
10.14419/ijac.v3i1.4372
International Journal of Advanced Chemistry; Vol. 3 No. 1 (2015); 25-37
2310-2977
10.14419/ijac.v3i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/4372/1692
Copyright (c) 2015 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/4666
2015-06-01T09:38:25Z
IJAC:ART
Study effect of IL-35 and some sex hormones in male patients who have multiple sclerosis (MS)
Bidan, Ali K.
A. Hamzah, Nisreen
Multiple Sclerosis
Interleukin-35
Testosterone
Progesterone
Prolactin.
Multiple sclerosis (MS) is a disease characterized by inflammation and demyelination. Currently, the cause of MS is unknown. An early and accurate diagnosis of multiple sclerosis (MS) is very important, since it allows early treatment initiation, which reduces the activity of the disease. The present study aimed to focus a light on the contribution of interlukin-35 (IL-35) and its relation to some hormones such as testosterone, progesterone, and prolactin (PRL) in the pathogenesis of multiple sclerosis. Twenty two enrollers (samples) attended from Teaching hospital of Baghdad were divided into two groups. Ten enrollers were described as healthy subject as control group as group 1 (G1) in range ages (20-30) years. Twelve male patients as group 2 (2) have been relapsing remitting multiple sclerosis (RRMS) matched in age with group 1 (G1).
Science Publishing Corporation
2015-05-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/4666
10.14419/ijac.v3i1.4666
International Journal of Advanced Chemistry; Vol. 3 No. 1 (2015); 38-41
2310-2977
10.14419/ijac.v3i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/4666/1789
Copyright (c) 2015 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/5048
2015-08-26T10:12:42Z
IJAC:ART
An overview of the applications of furfural and its derivatives
Eseyin, Anthonia, E.
Steele, Philip, H.
Furfural
Furfuryl Alcohol
Tetrahydrofuran
Furoic Acid
5-Methyl Furfural.
Recently, furfural, “the sleeping beauty bio-renewable chemical†has gained a renewed attention as a potential chemical for the production of biofuels and biochemicals. Furfural is the most commonly produced industrial chemical because its production is very flexible. It is one of the top value-added chemicals that can be produced from biomass. Furfural and its derivatives have been extensively used in plastics, pharmaceutical and agrochemical industries. Furfural is a natural precursor to a range of furan-based chemicals and solvents such as dihydropyran, methyltetrahydrofuran, tetrahydrofuran, methylfuranfurfuryl alcohol, tetrahydrofurfuryl alcohol and furoic acid. Furfural and its derivatives have been widely applied as fungicides and nematicides, transportation fuels, gasoline additives, lubricants, resins, decolorizing agents, jet fuel blend stocks, drugs, insecticides, bio-plastics, flavor enhancers for food and drinks, rapid all-weather repair system for bomb-damaged runways and pot holes and also for wood modification and book preservation.
Science Publishing Corporation
2015-08-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/5048
10.14419/ijac.v3i2.5048
International Journal of Advanced Chemistry; Vol. 3 No. 2 (2015); 42-47
2310-2977
10.14419/ijac.v3i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/5048/1955
Copyright (c) 2015 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/5933
2016-05-24T12:27:46Z
IJAC:ART
Ultrasonic study of molecular interactions in binary mixtures of methyl methacrylate(MMA) with toluene and dimethylacetamide at 318 K
Indhumathi, R.G.
Acoustical Impedance
Acoustical Parameters
Free Volume
Rao’s Constant
Ultrasonic Velocity
Wada’s Constant.
The ultrasonic velocity, density and viscosity at 318K have been measured in the binary systems of Methyl methacrylate + Toluene and Methyl methacrylate + Dimethylacetamide. In this work an attempt has been made for the first time to investigate the behavior of binary solutions of Methylmethacrylate(MMA) in Toluene and Dimethylacetamide(DMAC) with regard to acoustical parameters such as adiabatic compressibility(β), intermolecular free length(lf), free volume(Vf), Rao’s constant(R), Wada’s constant(W) and specific acoustical impedance(Z) from ultrasonic measurements at 318 K were calculated. The results are interpreted in terms of molecular interaction between the components of mixtures.
Science Publishing Corporation
2016-03-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/vnd.openxmlformats-officedocument.wordprocessingml.document
http://www.sciencepubco.com/index.php/IJAC/article/view/5933
10.14419/ijac.v4i1.5933
International Journal of Advanced Chemistry; Vol. 4 No. 1 (2016); 1-4
2310-2977
10.14419/ijac.v4i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/5933/2191
http://www.sciencepubco.com/index.php/IJAC/article/view/5933/17294
Copyright (c) 2016 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/6080
2016-05-24T12:27:46Z
IJAC:ART
Vibrational spectroscopic study of intensities and shifts of symmetric vibration modes of ozone diluted by cumene
Heidari, A.
Brown, C.
Ozone Molecule
Cumene Molecule
Vibrational Spectroscopy
Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR–FTIR)
FT–Raman Spectroscopy
Vibration Modes.
In the current research, ATR–FTIR and FT–Raman spectroscopies was used to investigate the effect of concentration on IR and Raman intensities and shifts of symmetric vibration modes of Ozone diluted by Cumene. The symmetric vibration mode of Ozone was observed at IR and Raman shifts of 850 and 975 cm-1, respectively. By reducing the concentration of Ozone, its intensity also was reduced and the symmetric vibration mode of Cumene was observed at IR and Raman shifts of 1050 and 1185 cm-1, respectively. The concentration has not influence on IR and Raman shifts of vibration modes. The experimental results were confirmed the linear dependency of IR and Raman intensities to the concentration of sample.Ozone molecule (left illustration) and Cumene molecule (right illustration) (Santiago-López et al. 2010; Guevara-Guzmán et al. 2009; Pereyra-Muñoz et al. 2006; Foucaud et al. 2006; Elsayed 2001; van Hoof et al. 1997; Chrostowski et al. 1983; Boehme et al. 1992; Catalá et al. 2013; Balvers et al. 1992; Marker et al. 1986).
Science Publishing Corporation
2016-05-07
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/6080
10.14419/ijac.v4i1.6080
International Journal of Advanced Chemistry; Vol. 4 No. 1 (2016); 5-9
2310-2977
10.14419/ijac.v4i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/6080/2237
Copyright (c) 2016 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/6086
2016-05-26T11:54:47Z
IJAC:ART
Some complexes of N-aryl furfural nitrones with Co (II), Ni (II), Cu (II), Zn (II) and Cd (II) chlorides
Taqa, Amer A.
Furfural
Hammet Constants
Metal Complex
Nitrones.
Some new metal(II) dichloride complexes with the ligands substituted nitrones of the general formula [ML2Cl2], where M= Co(II), Ni(II), Cu(II), Zn(II) and Cd(II), L=OCH=CHCH=C-CH=N(O)C6H4X (X=H,p-CH3,CH3O,CH3CO,F,Cl,and Br) have been prepared and characterized by elemental analysis, IR,1H,13C NMR and Vis/Uv spectroscopy. The IR spectral data showed that the nitrone ligands coordinated with the metal ion through the most active atom of the N-oxide to give square planner coordinate (Cu,Ni,) complexes and (Zn,Cd,Co) tetrahedral complexes. No correlation was observed between the N-O vibrations stretching high frequency ν (N-O) of the complexes and the Hammet (σ) constants.
Science Publishing Corporation
2016-05-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/6086
10.14419/ijac.v4i1.6086
International Journal of Advanced Chemistry; Vol. 4 No. 1 (2016); 10-14
2310-2977
10.14419/ijac.v4i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/6086/2260
Copyright (c) 2016 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/6333
2016-11-23T09:37:49Z
IJAC:ART
Molecular interactions in solutions of poly vinyl alcohol : an ultrasonic study
Vigneswari, M
Saravanakumar, S. S
Suresh, V. N
Sankarrajan, S
Binary Mixtures
Ternary Mixtures
Molecular Interactions
Ultrasonic Velocity
Inter Molecular Free Length
Acoustic Impedance.
Ultrasonic velocity, density, viscosity have been measured experimentally in the binary and ternary mixtures of Poly Vinyl Alcohol (PVA), water and borax with various concentration at 301.32 K. As the acoustical parameters like adiabatic compressibility, intermolecular free length, relaxation time, acoustic impedance, surface tension, Rao’s and Wada’s constant, ultrasonic attenuation and free volume would be more useful to predict and confirm the molecular interaction, these have been determined by using ultrasonic velocity, density and viscosity of the prepared solution. It has been identified that the molecular interactions in binary mixture were stronger than that of in ternary mixtures. And also there is a strong solute – solvent interaction occurring in both binary and ternary solutions. This may be due to the greater possibility of hydrogen bonding between PVA and Water molecules. When the borax is added, the molecular interaction is getting weaker due to greater affinity of borate ion towards the hydrogen in hydroxyl group of PVA.
Science Publishing Corporation
2016-07-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/msword
http://www.sciencepubco.com/index.php/IJAC/article/view/6333
10.14419/ijac.v4i2.6333
International Journal of Advanced Chemistry; Vol. 4 No. 2 (2016); 15-21
2310-2977
10.14419/ijac.v4i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/6333/2331
http://www.sciencepubco.com/index.php/IJAC/article/view/6333/17319
Copyright (c) 2016 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/6742
2016-11-25T02:47:16Z
IJAC:ART
Synthesis, spectral characterization, molecular structure, HOMO-LUMO, MEP and NLO analysis of some (E)-N-(4-Fluoro-3-Phenoxybenzylidene)- substituted benzenamines
Raj, G. Jesu Retna
Jayanthi, P.
Sekar, M.
DFT
HOMO – LUMO Energies
NLO
MEP
Substituted Benzenamines.
In this work, (E)-N-(4-Fluoro-3-Phenoxybenzylidene)-substituted benzenamines (1-6) have been synthesized and characterized by IR, 1H and 13C NMR spectral studies. Density functional theory (DFT) has been used to optimize geometrical parameters, atomic charges, vibrational wavenumbers and intensity of vibrational bands. The molecular properties HOMO-LUMO, MEP and atomic charges of carbon, nitrogen and oxygen were calculated using B3LYP/6-311G (d, p) basis set. The polarizability and first order hyperpolarizability of the title Compounds were calculated and interpreted.
Science Publishing Corporation
2016-11-23
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/6742
10.14419/ijac.v4i2.6742
International Journal of Advanced Chemistry; Vol. 4 No. 2 (2016); 27-35
2310-2977
10.14419/ijac.v4i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/6742/2485
Copyright (c) 2016 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/6825
2016-11-25T02:47:49Z
IJAC:ART
Synthesis and characterization of polystyrene sulfonic acid-polyaniline and montmorillonite nanocomposites
Velauthamurty, Kugamoorthy
Akileshan, Vamadevan
Clay-Polymer
Cyclic Votlammogams
Montmorillonite
Nanocomposite Redox Behavior.
Numerous polymer ingredients merged montmorillonite (MMT) has received a great deal of attention in the research field of clay-polymer nanocomposites, due to the enhancements in physical properties such as mechanical and thermal properties compared to their parent materials. MMT-polyaniline-polystyrene sulfonic acid nanocomposites containing different amounts of PANI and PSSA were prepared by the interaction of aniline monomer into pristine MMT together with cation intercalated MMT. It is followed by the subsequent oxidative polymerization of the aniline and PSSA in the interlayer spacing to give MMT-PANI-PSSA nanocomposites. X-Ray diffraction and Fourier-transform infrared spectroscopy results confirmed that PANI and PSSA have been inserted within the MMT interlayer. Thermal Gravimetric Analysis (TGA) shows that the improved thermal stability for the intercalated nanocomposites in comparison with the PANI clay nanocomposites. The thermal behavior of MMT-PANI-PSSA nanocomposites is analyzed in a wide range of temperatures. TGA analysis suggests that the PSSA-PANI of ratio 3:2 is thermally stable. Cyclic votlammogams of the PSSA-PANI- Ce(III) -MMT shows characteristic redox behavior of that appear in the Ce(IV)/Ce(III) under identical conditions together with the typical electrochemical behavior of PSSA. These prepared nanocomposites have several advantages over the other PSSA-MMT nanocomposites such as lesser sheet resistance, advanced hardness and improved thermal stability.
Science Publishing Corporation
2016-11-23
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/6825
10.14419/ijac.v4i2.6825
International Journal of Advanced Chemistry; Vol. 4 No. 2 (2016); 36-44
2310-2977
10.14419/ijac.v4i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/6825/2486
Copyright (c) 2016 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/6880
2016-11-23T09:37:50Z
IJAC:ART
Quantitative analysis of fat, oil and grease in valikamam area, Sri Lanka and conversion of waste oil into grease
Velauthamurty, kugamoorthy
Dilki Manisha, Kurukulasuriya
Ground Water
Waste Oil
Recycling
Conversion
Grease
Heavy Fuel Oil.
Groundwater is the main source of freshwater. Groundwater denotes to all the water occupying the voids, pores and fissures within geological formations, which originated from atmospheric precipitation either directly by rainfall infiltration or indirectly from rivers, lakes or canals. Groundwater pollution is a serious problem because many people depend on groundwater for their drinking water. Waste oil along with heavy metals is one of the major contaminant species makes water harmful. A one drop of heavy fuel oil is enough to contaminate a million gallons of freshwater. Waste oil is generated through dumping, land spreading, incineration, road oiling, industrial chemical spills, extensive use of pesticides, herbicides and fertilizers etc. For this study water samples were collected from forty of wells representing the Valikamam area. Then the water samples were analyzed for Fat, Oil and Grease using liquid-liquid extraction with hexane and gravimetric determination. The results shows only four wells exceed the 10 mg/L while thirty six wells were potable. Waste oil disposal is a big threat these days around the world. Hence this paper gives a brief review about recycling waste oil by converting it into commercially important lubricating grease. Once the grease characterization is done for the grease obtained from waste oil, we can bring it up to the commercial stage on the other hand giving a better solution for the depletion of waste oil.
Science Publishing Corporation
2016-11-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/6880
10.14419/ijac.v4i2.6880
International Journal of Advanced Chemistry; Vol. 4 No. 2 (2016); 22-26
2310-2977
10.14419/ijac.v4i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/6880/2482
Copyright (c) 2016 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/7115
2017-05-06T03:48:54Z
IJAC:ART
Lead corrosion inhibition by cedrus atlantica as a green inhibitor in 0.1M Na2CO3 solution
Elmiziani, Inaam
Houbairi, Sara
Essahli, Mohamed
Lhaloui, Saadia
Lamiri, Abdeslam
Basic Solutions
Cedrus Atlantica
Inhibition
Lead
Polarization.
The inhibition of lead corrosion in 0.1 M Na2CO3 solution with the essential oil of Atlas cedar was studied by polarization and impedance. The studies of polarization showed that the essential oil of Cedrus atlantica acts as a cathodic inhibitor. The different thermodynamic and kinetic parameters were calculated to understand the energy changes associated during the inhibition process. The effectiveness increases with the concentration to reach 70% at concentration of 2000 ppm.
Science Publishing Corporation
2017-01-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/7115
10.14419/ijac.v5i1.7115
International Journal of Advanced Chemistry; Vol. 5 No. 1 (2017); 1-7
2310-2977
10.14419/ijac.v5i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/7115/2560
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/7155
2017-05-06T03:48:54Z
IJAC:ART
Synthesis and antimicrobial activities of some (E)-N'-1-(substituted benzylidene)benzohydrazides
Manikandan, V.
Balaji, S.
Senbagam, R.
Vijayakumar, R.
Rajarajan, M.
Vanangamudi, G.
Arulkumaran, R.
Sundararajan, R.
Thirunarayanan, G.
(E)-N '-1-(substituted benzylidene) benzohydrazides
UV
IR and NMR spectra
Antimicrobial activities
Gram-positive and negative bacte-ria.
About ten substituted (E)-N'-1-(substituted benzylidene) benzohydrazides have been synthesized. They are analyzed by their analytical, ultra violet (UV), Fourier transform-IR (FT-IR) and nuclear magnetic resonance (NMR) spectral data and evaluated by antimicrobial activities such antibacterial and antifungal activities.
Science Publishing Corporation
2017-02-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/7155
10.14419/ijac.v5i1.7155
International Journal of Advanced Chemistry; Vol. 5 No. 1 (2017); 17-24
2310-2977
10.14419/ijac.v5i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/7155/2617
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/7186
2017-05-06T03:48:54Z
IJAC:ART
Molecular structure, spectroscopic (UV-vis, FT-IR and FT- Raman), conformational aspects of 3t-pentyl-2r,6c-di(naphthalen-1-yl) piperidin-4-one oxime: a comprehensive experimental and DFT study
Anandhy, K.
Arockia doss, M.
Amala, S.
Mahalakshmi, S.
Rajarajan, G.
3-PDNPO
FT-IR
FT-Raman
HOMO –LUMO
Hyperpolarizability.
The molecular structure and conformational aspects of 3t-pentyl-2r,6c-di(naphthalen-1-yl)piperidin-4-one oxime (3-PDNPO) were studied by using B3LYP level with 6-31G(d,p) p basis set. The optimized geometrical parameters are in agreement with analogue available single XRD data. The optimized parameters showed that the piperidin-4-one ring adopts chair conformation.The FT- IR and FT-Raman spectra were recorded within the region 4000-400 cm-1 and 4000-10 cm-1, respectively. It was found by experimental wavenumbers and DFT wavenumbers were in good agreement. Electronic properties are investigated using TD-DFT/B3LYP method using 6-31G (d,p) basis set and compared with experimental UV-visible spectra. Additionally, the ΔE gap investigated three phases follows the order of CHCl3 > gas > Methanol. The favourite sites for substitution reactions were evaluated by Mulliken and MEP analyses. From NLO analysis, it is found that the hyperpolarizability values are two times greater than the urea.Our proposed simulation procedure offers an alternative compound with which we can evaluate or design the best candidate NLO material.
Science Publishing Corporation
2017-02-10
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/7186
10.14419/ijac.v5i1.7186
International Journal of Advanced Chemistry; Vol. 5 No. 1 (2017); 8-16
2310-2977
10.14419/ijac.v5i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/7186/2593
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/7416
2017-05-06T03:48:54Z
IJAC:ART
Exrtaction of sericin from degumming process of silk fibres and its application on nonwoven fabrics
Fatahian, Reyhaneh
Noori, Mehdi
Khajavi, Ramin
Silk
Sericin
Degumming
Nonwoven.
Silk sericin is a family of water-soluble proteins extracted from the silkworm cocoon. Studies have been attempted to recycle the sericin waste sericulture to develop value-added products in biomedical, pharmaceutical, cosmetic and food industries. Thus, increased production of sericin-containing wastewater from sericulture is predicted soon. In this study, some of the separation methods of sericin from silk waste water solution also extracted sericin characteristics have been investigated by FTIR. This study has determined antibacterial action of sericin in E. coli and Micrococcus luteus samples and illustrated sericin capacity as an antibacterial factor by confirming sericin on bacterial growth. Results of this study indicated discretion possibility of sericin from silk wastewater. Extracted sericin value depends on temperature and time. Characteristics of nonwoven textile coated by sericin had represented increasing of tensile and bending length and also showed that sericin with high concentration had preventive capacity of Micrococcus luteus bacterial on nonwoven textile.
Science Publishing Corporation
2017-04-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/7416
10.14419/ijac.v5i1.7416
International Journal of Advanced Chemistry; Vol. 5 No. 1 (2017); 25-28
2310-2977
10.14419/ijac.v5i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/7416/2661
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/7437
2017-05-06T03:48:54Z
IJAC:ART
AC conductivity and dielectric behavior of poly (o-phenylenediamine)/TiO2 nanocomposites
S., Archana
Polyphenylenediamine
Nanocomposites
Dielectric Property
Ac Conductivity.
Poly (o-phenylenediamine) and their nanocomposites with TiO2 nanoparticles were synthesized using oxidative polymerization technique and the polymer nanocomposites were characterized using spectral techniques like FT-IR, UV-VIS spectroscopy and the morphology have been analyzed by XRD, SEM and TEM. The stability of the prepared polymer nanocomposites was studied using TGA, DTA and found to have high thermal stability. The study of ac conductivity, dielectric property revealed that the formed nanocomposites are semiconducting in nature and can be widely used in the field of energy storage and semiconductor devices, in diodes, batteries etc.
Science Publishing Corporation
2017-04-11
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/7437
10.14419/ijac.v5i1.7437
International Journal of Advanced Chemistry; Vol. 5 No. 1 (2017); 29-34
2310-2977
10.14419/ijac.v5i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/7437/2670
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/7440
2017-05-06T03:48:54Z
IJAC:ART
Crystal structure of 2-[(2-acetoxyethoxy) methyl]-3-amino-1,2,4-triazin-5(2H)-one
Lee, Gene-Hsiang
Hwang, Long-Chih
1
2
4-Triazine
4-Triazin-5(2H)-one
Acyclic Nucleoside Analogue
X-Ray Crystal Structure
Hydrogen Bonds.
The X-ray structural investigations has been carried out for the title compound, 2-[(2-acetoxyethoxy)methyl]-3-amino-1,2,4-triazin-5(2H)-one (1-[(2-acetoxyethoxy)methyl]-6-azaisocytosine), molecular formula C8H12N4O4, crystallizes in a monoclinic space group P-1 with a = 5.3124(3) Å, b = 7.3635(3) Å, c = 14.0170(8) Å, α = 81.5265(19)°, β = 85.852(2)°, γ = 76.760(2)°, V = 527.49(5) Å3 and Z = 2, resulting in a density, Dcalc, of 1.437 g/cm3. The hydrogen-bonding systems assemble with N-H···O [graph set C (6)], N-H···N [graph set R  (8)], and N-H···N combine with N-H···O [graph set R (12)]. The side chain of the molecular structure is further stabilized by short contacts formed by intermolecular C-H···O interactions.
Science Publishing Corporation
2017-04-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/7440
10.14419/ijac.v5i1.7440
International Journal of Advanced Chemistry; Vol. 5 No. 1 (2017); 35-38
2310-2977
10.14419/ijac.v5i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/7440/2686
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/7511
2017-05-06T05:45:34Z
IJAC:ART
Gas chromatography-mass spectral structural analysis, phytochemical screening and antimicrobial activity of n-hexane leaf extract of Corymbia torelliana
Moses Daben, Janet
Albert Dashak, Dayil
Uwhomagbejo Isaac, Rahab
Antimicrobial Activity
Corymbia torelliana
Sodium Fusion Test
Gas Chromatography-Mass Spectometry
Phytochemical Screening.
The chemical studies and antimicrobial activity of n-hexane leaf extract of Corymbiatorelliana was evaluated for medicinal importance. The phytochemical constituents present were steroids, tannins, cardiac glycosides alkaloids and terpenes. The result of sodium fussion test revealed the presence of Phosphorus Nitrogen and Chlorine. The Column Chromatography gave several fractions that were pulled together by Thin Layer Chromatography based on their Rf values, colours and resolutions on different solvent systems. GC-MS was used to identify compounds like: Hexadecanoic acid methyl ester, 9,12-Octadecadienoic acid methyl ester, 2,2,4,4-tetramethyl-1,3-cyclobutanediene, Pentadecanoic acid-14-methyl methyl ester, Hexadecanoic acid-2-hydroxyl propyl ester, 2(4H)-Benzofuranone-5,6,7,7a-tetrahydro-4,4,7a-trimethyl and many others. Antimicrobial screening was carried out on Escherichia coli, Staphylococcus aureus and Aspergillus niger using the agar well diffusion technique. The result shows that the extract exhibit antimicrobial activity with zones of inhibition in diameter. These results show that the plant exhibit antimicrobial activity and possess pharmacological characteristics, which could be applied in the production of potent drugs.
Science Publishing Corporation
2017-05-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/7511
10.14419/ijac.v5i1.7511
International Journal of Advanced Chemistry; Vol. 5 No. 1 (2017); 39-53
2310-2977
10.14419/ijac.v5i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/7511/2702
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/7739
2017-11-22T04:21:47Z
IJAC:ART
Spectral characterization, microbial activities and toxicity study of some newly synthesized hydrazone derivatives
Kalaiarasi, N.
Manivarman, S.
Hydrazone derivatives of 2-Thioxodihyropyrimidine-2-dione were synthesized by addition of thiobarbituric acid with phenyl hydrazine, dinitrophenyl hydrazine, semicarbazide, thiosemicarbazide and benzohydrazide respectively. Structures of these synthesized compounds are characterized by means of UV, IR, Proton-NMR, Carbon- NMR. Finally the hydrazone derivatives synthesized are screened for biological activities namely antibacterial and antifungal activities. Also in addition the toxicity studies of the compounds are also performed.
Science Publishing Corporation
2017-06-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/vnd.openxmlformats-officedocument.wordprocessingml.document
application/vnd.openxmlformats-officedocument.wordprocessingml.document
http://www.sciencepubco.com/index.php/IJAC/article/view/7739
10.14419/ijac.v5i2.7739
International Journal of Advanced Chemistry; Vol. 5 No. 2 (2017); 54-60
2310-2977
10.14419/ijac.v5i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/7739/2754
http://www.sciencepubco.com/index.php/IJAC/article/view/7739/17389
http://www.sciencepubco.com/index.php/IJAC/article/view/7739/17390
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/7930
2017-11-22T04:21:47Z
IJAC:ART
Synthesis of locust bean gum-based terpolymer bentonite composite: evaluation for indigo carmine adsorption
Badalamoole, Vishalakshi
Abubakar Zauro, Sirajo
Adsorption
Bentonite
Diallyldimethylammonium chloride
Indigo carmine
Locust bean gum
2-acrylamido-2-methyl-1-propane sulfonic Acid.
A terpolymer gel compositeis made up of locust bean gum (LBG), diallyldimethylammonium chloride (DADMAC), 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) and bentonite (BNT) was prepared using methylenebisacrylamide (MBA) as crosslinker via microwave irradiation and characterized using FTIR, TGA and SEM techniques. Swelling behavior of the composite was studied under different pH conditions. The composite was also evaluated for adsorption of anionic dye ‘Indigo Carmine’ (IC). The behaviour of the composite was compared with the terpolymer gel without the clay component. The gel showed remarkably higher swelling under neutral pH compared to the composite. The adsorption capacity of the terpolymer gel without clay for Indigo Carmine dyeis also found to be higher (17.36 mg/g) compared to the clay composite (11.99 mg/g). The adsorption data were subjected to three different isotherm models namely; Freundlich, Langmuir and Temkin and were observed to be explained best by Freundlich model. The adsorption of indigo Carmine on the terpolymer gel and the composite is observed to be a second order kinetic process.
Science Publishing Corporation
2017-08-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/7930
10.14419/ijac.v5i2.7930
International Journal of Advanced Chemistry; Vol. 5 No. 2 (2017); 61-69
2310-2977
10.14419/ijac.v5i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/7930/2811
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/7973
2017-11-22T04:21:47Z
IJAC:ART
On R degrees of vertices and R indices of graphs
Ediz, Süleyman
R degree
R indices
Topological indices
QSAR
QSPR.
Topological indices have been used to modeling biological and chemical properties of molecules in quantitive structure property relationship studies and quantitive structure activity studies. All the degree based topological indices have been defined via classical degree concept. In this paper we define a novel degree concept for a vertex of a simple connected graph: R degree. And also we define R indices of a simple connected graph by using the R degree concept. We compute the R indices for well-known simple connected graphs such as paths, stars, complete graphs and cycles.
Science Publishing Corporation
2017-08-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/7973
10.14419/ijac.v5i2.7973
International Journal of Advanced Chemistry; Vol. 5 No. 2 (2017); 70-72
2310-2977
10.14419/ijac.v5i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/7973/2813
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/8124
2017-11-22T04:21:47Z
IJAC:ART
Proximate, GC-FID, and micronutrient analysis of ex-tracts of azadirachta indica
Benjamin, Amadi
Mary, Emelieze
Charity, Ogunka-Nnoka
Nnabugwu, Agomuo
Peter, Amadi
Proximate
Vitamins
Minerals
Phytochemicals
Neem Plant
Different extraction media applied on the pulverized leaves of Neem plant (Azadirachta indica) were analyzed for its proximate, phytochemical, and micronutrient compositions, predominantly using the gas chromatographic technique. The results showed that the ethanol extract contained the highest amounts of carbohydrates and fibre. No significant difference (p>0.05) was recorded for the protein and ash content of both ethanol and methanol extracts, while the moisture and fat contents occurred highest in aqueous and methanol extracts respectively. The phytochemical screening revealed the absence of glycosides in all the extracts while steroids were found only in methanol and ethanol extracts. The aqueous extracts contained greater amounts of epicate chin (13.42%), lunamarine (5.81%), tannin (19.18%) and phytates (0.27%), but lacked anthocyanin, phenol and kaempferol, while rutin (77.54%), ribalinidine (2.06%), oxalate (1.23%), anthocyanin (1.16%), and sparteine (0.05%) occurred highest in the ethanol extract. Only sparteine was lacking in the methanol extract. No significant difference was recorded between the aqueous and ethanol extracts for the vitamin A, D, C, and B2Â contents, while except for vitamin B3 (0.22mg/100g) and vitamin K (0.08mg/100g), 08mg/100g), the methanol extracts contained the least amounts of the vitamins evaluated. Manganese, zinc, copper, calcium and lead contents of the methanol extract were significantly higher than those of the other extracts while the aqueous extract contained the highest amount of sodium. This study has provided the scientific backing for the application of a specific extraction medium during the exploitation of distinct phytochemicals, while water, ethanol, and methanol should be the preferred extraction media for vitamins, proximate and dietary mineral contents respectively.Â
Science Publishing Corporation
2017-08-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/8124
10.14419/ijac.v5i2.8124
International Journal of Advanced Chemistry; Vol. 5 No. 2 (2017); 73-79
2310-2977
10.14419/ijac.v5i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/8124/2838
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/8136
2017-11-22T04:21:47Z
IJAC:ART
Facile preparation of new polystyrene leucomalachite green thick films and study of their radiochromic behavior for low doses of gamma radiation
Bera, Anuradha
Malav, Shatrughan
Tiwari, Bajrang Lal
Vaijapurkar, Shyam Govind
Polystyrene
Leucomalachite Green
Radiochromic
Thick Films
Low Dose.
Colourless polystyrene-leucomalachite green (PS-LMG) thick films containing a suitable chloroalkane were prepared by a fast and facile casting method, and were investigated for their radio chromic response behavior under the influence of 1.25 MeV γ-radiation. Their gamma response was studied in the 0.05 kGy to 10 kGy range to evaluate their suitability for potential use as the dosimeter in the radiation processing industries. The films were found to undergo a visibly distinct green coloration in the studied range, with the colour intensity increasing with an increase in the total dose. The radiochromic response of these films when investigated as a function of film thickness showed that the colour development as well as the linearity of the response was markedly affected by the thickness of the films. The effect of dye loading and the chloroalkane concentration on the radiochromic response of these films were also investigated. Depending upon the film thickness and reactant concentrations, the films were found to be capable of visually detecting gamma radiation doses as low as few tens of grays.
Science Publishing Corporation
2017-09-25
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/8136
10.14419/ijac.v5i2.8136
International Journal of Advanced Chemistry; Vol. 5 No. 2 (2017); 80-85
2310-2977
10.14419/ijac.v5i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/8136/2862
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/8313
2017-11-22T04:21:47Z
IJAC:ART
Spectrophotometric determination of paracetamol in drug formulations with 1 – naphthol
Iorhemen, Raymond T.
Iorhemba, Aondona M.
Sambo, Royalty E.
Nande, Winifred U.
Determination of Paracetamol
Drug Formulations
Paracetamol
Paracetamol with 1-Naphthol
Spectrophotometry.
Paracetamol with 1-Naphthol gave an azodye and the concentration of paracetamol was investigated spectrophotometrically. The dye formed with 1-Naphthol as a coupling agent followed Beer Lambert’s law within the range of 2 – 10 μgmL-1 of paracetamol at a lambda max (λmax) of 505nm. The molar absorptively of the azodye coupled with 1-Naphthol was found to be 1.6973×104 dm3mol-1cm-1, r2 was 0.9974. P value was found to be 0.013 at 95% confidence. LOD was 0. 02 μgmL-1 while LOQ was 0. 10 μgmL-1. The coupling agent has been applied successfully for the analysis of paracetamol in pharmaceutical preparations such as boska, ibex, mixagrip, norgesis and procold with the recovery of 101.27 %, 98.98 %, 99.47 %, 98.28 % and 101.6 % respectively. The relative standard deviation of all the five samples ranged from 0 % to 0.76 %. The method used in the present study may be applied to the determination of trace amount of paracetamol on clinical samples as it is simple, accurate and precise, and also reproducible.
Science Publishing Corporation
2017-10-11
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/8313
10.14419/ijac.v5i2.8313
International Journal of Advanced Chemistry; Vol. 5 No. 2 (2017); 86-90
2310-2977
10.14419/ijac.v5i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/8313/2890
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/8359
2017-11-22T04:21:47Z
IJAC:ART
Synthesis, structural characterization and comparison of experimental and theoretical results by DFT level of molecular structures of 1,2,3-triazoles derived from 5-chloroisatin
Tribak, Zineb
Skalli, Mohammed
Senhaji, Omar
Kandri Rodi, Youssef
5-Chloro-1-(Prop-2-Yn-1-Yl) Indoline-2
3-Dione
Dipolarophile
1
3-Dipolar Cycloaddition
Theoretical Study
DFT.
This work deals about the synthesis, NMR characterization and the density functional method (B3LYP) with the 6-31G basis set of 1, 3-dipolar cycloaddition reactions between the two azides as dipoles and propargylchloroisatin as dipolarophile. Furthermore, DFT calculations were used to study the nucleophile–electrophile interactions of the azides and dipolarophile and also the stability between the regioisomers comparing their energy. Our calculations are in a good agreement with the experimental findings.
Science Publishing Corporation
2017-10-23
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/8359
10.14419/ijac.v5i2.8359
International Journal of Advanced Chemistry; Vol. 5 No. 2 (2017); 91-95
2310-2977
10.14419/ijac.v5i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/8359/2900
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/8364
2017-11-22T04:21:47Z
IJAC:ART
Immobilization of dimethylamine and aniline using soft lignocelluloses material (abelia chinensis sawdust) for controlling striga hermonthica in sorghum field
Lazwan, Rindap
Daben, Janet
Agbalaga, Rechit
Dashak, Dayil
Chemical Modifications
Immobilization
Nitrogenous Bases
Sorghum and Striga Hermonthica.
Chemical modifications of lignocelluloses materials are advance development that are fast and convenient to convert the low value woody residues to create channels for controlling the release of organic manure to proffer solutions to farmers in the increasing soil acidity, rapid weed's growth, soil infertility and food scarcity. The study investigates the physic-chemical parameters, and the effect of immobilized nitrogenous bases on oxidized sawdust for controlling Striga hermonthica in the sorghum field. The results indicate that the moisture content increases with increase particle size as water absorption capacity increases with time and size, thereby, ash content decrease with increase size. The control, oxidized and immobilized sawdusts were analyzed using FT-IR and it was clear that pretreated sawdust of 0.08-0. 10M KIO4 oxidized the exposed hydroxyl groups of the lignocelluloses material to the carbonyl group but were unable in 0.04-0.06M KIO4. Likewise, the absorption bands showed that the nitrogenous bases were incorporated while carbonyl absorptions were still observed. The effect of immobilized Dimethylamine concentrations on gradual release on sorghum grows progressively with the absence of S. hermonthica while aniline grows faster than Dimethylamine at 0.5-1.0M then diminished at 1.5M than Dimethylamine. The application of immobilized amines on the sorghum field showed that this invention would enhance sorghum productivity through striga control.
Science Publishing Corporation
2017-11-03
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/8364
10.14419/ijac.v5i2.8364
International Journal of Advanced Chemistry; Vol. 5 No. 2 (2017); 96-101
2310-2977
10.14419/ijac.v5i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/8364/2919
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/8471
2017-11-22T04:24:29Z
IJAC:ART
Di- and tetranuclear gadolinium (III) complexes of 2-hydroxypropane-1,2,3-tricarboxylic acid and 1,2,2-trimethylcyclopentane-1,3-dicarboxylic acid : identification and characterization
Riri, Mohammed
Hadhoudi, Farid
Hor, Mustapha
Ezzemouri, Samir
Eljaddi, Tarik
Benajjar, Adelkhalek
Hlaibi, Miloudi
Citric and Camphoric Acid
Coloress Complexes
Indirect Photometry Detection
Gadolinium Complexes
Stability of Contrast Agents.
Our studying involved, Identification and characterization of two novel gadolinium complexes with 2-hydroxypropane-1,2,3-tricarboxylic acid (citric acid) noted H3L and 1,2,2-trimethylcyclopentane-1, 3-dicarboxylic acid (camphoric acid) noted H2L in aqueous solution and in pH range 5,5–7,5. These acids containing the donor atoms (oxygen of OH and COOH), the formatted complexes are colorless and have no absorption band UV–visible. So, to determine the composition and stabilities of these complexes in solution, we have used an analytical technique called «Indirect Photometry Detection (IPD) » have identified multi-nuclear and multi-dentate complexes studied in this work. Giving for these colorless complexes with a mole ratio (M:L): (4:2) for Gd (III)–Citric acid and (2:2) Gd (III)–Camphoric acid. In addition, we have shown that the compositions and stabilities constant of these complexes are depended on the acidity of the medium.
Science Publishing Corporation
2017-11-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/8471
10.14419/ijac.v5i2.8471
International Journal of Advanced Chemistry; Vol. 5 No. 2 (2017); 102-107
2310-2977
10.14419/ijac.v5i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/8471/2944
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/8505
2018-06-12T11:38:22Z
IJAC:ART
Characterization of commercial detergents and natural cleansing agents with comparison of their potential for biodegradability
Mer, Anjali
Samant, Rajesh
Padmanabha, Prabha
Biodegradation
Detergents
Methylene Blue Photometric Assay.
Background: Commercial detergents are chemical formulations designed to dissolve or disperse grease, grime, and dirt by making them water soluble or suspending it in water. They are best known for their wide use in laundry industry and household cleaning. After use, the wash waters along with the residual detergents are discharged into sewage system and are carried to water bodies, which result in damaging the biodiversity of aquatic environment due to the non-degradable nature of the active detergent matter present in these cleansing agents.Method: A critical analytical study was conducted on the quality of popular detergent powders sold in the Indian market viz. Ariel, Surf Excel, Rin and Tide with respect to their moisture content, active and total alkalinity, active detergent matter, water-insoluble matter, oxygen releasing capacity and pH. Two natural cleansing agents viz. Areetha and Shikakai were tested for the same parameters. Bacterial cultures were isolated from detergent-rich soil in Dhobighat, Mumbai and used to study detergent degradation over a period of time. Methylene Blue Photometric Assay was used to estimate the reduction in active detergent matter.Result and Conclusion: Areetha and Shikakai were found effective as detergents but with certain limitations. Degradation was seen in the commercial detergents over a period of time.
Science Publishing Corporation
2017-12-12
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/8505
10.14419/ijac.v6i1.8505
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 1-7
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/8505/2981
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/8601
2018-06-12T11:38:22Z
IJAC:ART
Synthesis, spectral characterization (FT-IR and NMR) and DFT (Conformational analysis, molecular structure, HOMO-LUMO, UV-vis, NLO) computational studies on 2,2’-((1E,1’E)-phenazine-2,3 dilbis(azanylylidene))bis(methanyly- lidene))diphenol
A, Prabhakaran
E, Dhinesh kumar
D, Rajaraman
M, Arockia doss
Schiff Base
DFT
HOMO-LUMO
Mulliken Charge
MEP.
A new Schiff base was synthesized for the first time by the phenazine-2,3-diamine and 2-hydroxy benzaldedye in ethanol (1:1). The structure of Schiff bases was experimentally characterized by using UV-vis, IR, 1H NMR and 13C NMR spectroscopic methods. Further, the synthesized compound was subjected to DFT for better understanding of the molecular architecture and optoelectronic properties. The optimized geometric parameters supported the available experimental values. The Mulliken and MEP analyses are utilized to identify reactive sites of title molecule. The energetic behaviors of compound 3 in hexane, chloroform, methanol solvents and gas phase were examined using by time-dependent DFT (TD-DFT) method by applying the polarizable continuum model (PCM). The calculated ΔE energies exposed that charge transfer takes place within the molecule. In addition to the polarizability and hyperpolarizability have been calculated which exhibit that compounds possess non-linear optical nature.
Science Publishing Corporation
2017-12-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/8601
10.14419/ijac.v6i1.8601
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 8-17
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/8601/2991
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/8668
2018-06-12T11:38:22Z
IJAC:ART
Structure, electronic properties, NBO, NLO and chemi-cal reactivity of bis (1, 4-dithiafulvalene) derivatives: functional density theory study
Abbaz, Tahar
Bendjeddou, Amel
Villemin, Didier
Computational Chemistry
Density Functional Theory
Electronic Structure
Quantum Chemical Calculations
Tetrathiafulvalenes.
In this work, through computational study based on density functional theory (DFT/B3LYP) using basis set 6-31G (d,p) a number of global and local reactivity descriptors for a series of molecules containing a TTF function which are bis (1,4-dithiafulvalene) derivatives. They were computed to predict the reactivity and the reactive sites on the molecules. The molecular geometry and the electronic properties in the ground state such as frontier molecular orbital (HOMO and LUMO), ionization potential (I) and electron affinity (A) were investigated to get a better insight of the molecular properties. Molecular electrostatic potential (MEP) for all compounds were determined to check their electrophilic or nucleophilic reactivity. Fukui index, polarizability, hyperpolarizability, second order NLO property and natural bond orbital (NBO) analyses have also employed to determine the reactivity of bis (1,4-dithiafulvalene) derivatives.
Science Publishing Corporation
2017-12-20
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/8668
10.14419/ijac.v6i1.8668
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 18-25
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/8668/2996
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/8719
2018-06-12T11:38:22Z
IJAC:ART
Nonlinear optical investigation of (E)-1-(4-flourobenzylidene)urea using theoretical calculations
J, Tracy
A, Dhandapani
Bharani, Bharanidharan
DFT
FT-IR
FT-Raman
NLO
NBO
FMO.
The FT-IR and FT-Raman spectra of (E)-1-(4-flourobenzylidene)urea (4FBU) was recorded and analyzed. The optimized geometrical parameters were calculated. The complete vibrationally assignments were performed based on PED analysis with the help of SQM method. NBO analysis was carried out to explore the various conjucative/hyperconjucative interactions within the molecule and their second-order stabilization energy. The HOMO and LUMO energy gap was studied. All theoretical calculations were performed based on B3LYP/6-31G (d,p) level of theory. The first order hyperpolarizability (β0) and related properties (β, α0, Δα) of 4FBU were calculated. Besides, FMOs, MEP, Mulliken atomic charges and various thermodynamic parameters such as entropy, heat capacity and enthalpy were also calculated.
Science Publishing Corporation
2017-12-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/8719
10.14419/ijac.v6i1.8719
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 26-36
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/8719/3031
Copyright (c) 2017 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/8896
2018-06-12T11:38:22Z
IJAC:ART
Synthesis photophysical studies of some furfurylnitrones: high-ly selective chemosensors for Zn2+ and DFT studies
Dhineshkumar, Ezhumalai
Iyappan, Mathivanan
Ganapathi, Rajendran
Anbuselvan, Chinnadurai
Aldonitrones
Solvaotochromic Absorption
Zn2 Sensor
DFT.
Zn2 Sensor
New aldonitrones(1-4) were synthesized and characterized by UV-vis, fluorescence, FT-IR, 1H and 13C NMR spectral analyses. The absorption and fluorescence sensing spectra of the compounds were precise in different polarity of solvent. The solvent polarity parameters have been used to propose a quantitative approach towards the reliable stability of the electronic ground and excited state species. Photochemical behaviors of the compounds were analyzed by applying multi-linear correlation methods. The characterized compounds 1-4 show a chemosensing detection of zinc ion in aqueous solution. Besides, the fluorescence spectroscopic responses were reversible when the Zn2+chelating reagentEDTANa2.The phenomenon proves that these compounds to show a sensitivity “on-off†sensor for Zn2+.Further, to recognize the molecular structure, electronic and optical properties and DFT calculations of the molecules were formed.
Science Publishing Corporation
2018-02-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/vnd.openxmlformats-officedocument.wordprocessingml.document
http://www.sciencepubco.com/index.php/IJAC/article/view/8896
10.14419/ijac.v6i1.8896
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 37-45
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/8896/3244
http://www.sciencepubco.com/index.php/IJAC/article/view/8896/17444
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/9026
2018-06-12T11:38:22Z
IJAC:ART
Theoretical calculation of influence of halogen at-oms (F, Cl, Br, I) on arylazopyridine (Azpy) ruthenium complexes behaving as photo sensitizers by DFT method
Kouakou Nobel, N'guessan
Wawohinlin Patrice, Ouattara
Kafoumba, Bamba
Nahossé, Ziao
Azopyridine
Halide Atoms
NBO
NLMO
Ru(II) Complexes.
Photosensivity prediction of several azopyridine ruthenium complexes by DFT and TDDFT methods was performed. g-RuX2 (Azpy) 2 and d-RuX2(Azpy)2 where X stands for F, Cl, Br and I were studied todetermine their activities when halide atoms shift. So, frontier orbital, NBO, NLMO and MLCT transitions as well as an excited lifetime of those complexes was determined. The main difference between them stems from both the electronegativity of the halide atoms and the structure of each complex. Hence, the rank of halide's electronegativity that is as followscp(F)>cp (Cl)>cp (Br)>cp (I) has been discovered to influence all the reactivity of the complexes regardless their structure. Herein, the comparison with the gap energy shows that the most reactive complexes are those with fluorine atom. Especially, d-RuF2(Azpy)2 was admitted to be the most active isomer. Moreover, NBO calculation discloses that the complex becomes less ionic when the electronegativity decreases from F to I atoms. Furthermore, the calculation of NLMO orbitals shows that the bonding Ru-X are very strong. However, this strength decreases also from F to I and the nature of the bonding move from ionic to metallic. Moreover, the bonding from Npy and N2 with Ru are known to be the same confirming the bidentate state of Azpy ligand. Regarding the electronic prediction, the eight complexes are surely assumed to display MLCT transitions that originate the photosensitivity. However, the complex that requires the least energy remains d-RuF2(Azpy)2. This result was also determined by analyzing the excited lifetime that is the ability for a complex to longer linger in the cationic state. At last, we found out that with iodine atoms, the azopyridine ruthenium complex cannot behave as photosensitize dye insofar as I atom hides the main orbitals from Ru regardless the symmetry.
Science Publishing Corporation
2018-02-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/9026
10.14419/ijac.v6i1.9026
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 67-73
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/9026/3301
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/9046
2018-06-12T11:38:22Z
IJAC:ART
Synthesis and vibrational spectral (FT-IR, FT-Raman) studies, NLO properties & NBO analysis of (E)-N'(thiophen-2yl methylene)isonicotinohydrazide using quantum chemical method
A, Nathiya
H, Saleem
Bharani, Bharanidharan
M, Suresh
FT-IR
FT-Raman
NBO
HOMO-LUMO
Molecular Docking.
FT-IR (4000-400 cm-1) and FT-Raman (3500-50 cm-1) spectra of (E)-N'(thiophen-2yl methylene)isonicotinohydrazide (TMINH) molecule was recorded in solid phase. The optimized geometry was calculated by B3LYP method with 6-311++G(d,p) basis set. The harmonic vibrational frequencies, infrared (IR) intensities and Raman scattering activities of the title compound were performed at same level of theory. The complete vibrational assignments were performed on the basis of the Total energy distribution (TED) of the vibrational modes, calculated with scaled quantum mechanical (SQM) method. The calculated first hyperpolarizability may be attractive for further studies on non-linear optical (NLO) properties of material. Stability of the molecule arising from hyperconjugative interaction and charge delocalization was analyzed using natural bond orbital (NBO) analysis. Highest occupied molecular orbital-Lowest unoccupied molecular orbital (HOMO-LUMO) energy gap explains the eventual charge transfer interactions taking place within the title molecule. A study on the electronic properties, such as excitation energies and wavelengths, were performed by time-dependent (TD-DFT) approach. Molecular electrostatic potential (MEP) provides the information on the electrophilic, nucleophilic and free radical prone reactive sites of the molecule. The thermodynamic properties such as heat capacity, entropy and enthalpy of the title compound were calculated at different temperatures in gas phase. 1H and 13C-NMR chemical shifts of the molecule were calculated using Gauge-independent atomic orbital (GIAO) method.To establish information about the interactions between human cytochrome protein and this novel compound theoretically, docking studies were carried out using Schrödinger software.
Science Publishing Corporation
2018-02-14
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/9046
10.14419/ijac.v6i1.9046
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 53-66
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/9046/3297
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/9048
2018-06-12T11:38:22Z
IJAC:ART
Antibacterial properties of AgNO3-activated carbon composite on Escherichia coli: inhibition action
Yanou Rachel, Nkwaju
Abdelaziz, Baçaoui
Julius Nsami, Ndi
Daouda, Kouotou
Abdelrani, Yaacoubi
Mehdi, Lourrat
Khalid, Lafdi
Joseph, Ketcha Mbadcam
Activated Carbons
Biomass
Contaminants
Escherichia Coli
Wastewater.
AgNO3- activated carbon composite based palm kernel shell was prepared by hydrothermal carbonization. The concentration of AgNO3, activation temperature and impregnation time were investigated on five responses (iodine number, methylene blue number, BET surface area, micropore volume and total pore volume). The most influential parameters of the preparation process were optimized using the Doehlert optimal design. From the ANOVA, the following optimal conditions of preparation were retained: 0.068 mol/L, 210°C and 3.7 h for AgNO3 concentration, activation temperature and impregnation time respectively. The activated carbon (AC) and the composite (AC-AgNO3) were characterized using Fourier Transform infrared spectroscopy, X-Ray diffraction, Scanning Electron Microscopy coupled to Energy Dispersive X-ray spectroscopy and measurements of the surface area. The XRD pattern and SEM-EDX clearly confirmed the presence of silver in the composite. The experimental parameters of AC- AgNO3 composite were as followed: 708.44 mg/g; 293.09 mg/g; 713.0 m2/g; 0.49 cm3/g and 0.76 cm3/g, for iodine number, methylene blue number, BET surface area, micropore volume and total pore volume of AC- AgNO3 respectively. The antibacterial test carried on Escherichia Coli showed that AC-AgNO3 composite has a high-improved antibacterial property of 99.99% fixation with a dosage of 1500 ppm for 5 hours of contact time.
Science Publishing Corporation
2018-02-12
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/9048
10.14419/ijac.v6i1.9048
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 46-52
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/9048/3289
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/9177
2018-06-12T11:38:22Z
IJAC:ART
Structural investigation of sparfloxacin drug using mass spec-trometry and MNDO semi-empirical molecular orbital calcu-lations
Sarhan Mahmoud Abd El-kareem, Mamoun
ElDesawy, Mohamed
Hawash, Mohamed
Fahmy Ahmed, Magd El dain
Sparfloxacin
Mass Spectrometry and Semi-Empirical Molecular Orbital Calculations.
Sparfloxacin is a broad spectrum antibacterial fluoroquinolone against some microorganisms including gram-positive and gram-negative bacteria and exhibits moderate activity against anaerobes and mycobacteria. Sparfloxacin is well tolerated and the intake of food has no adverse effect on the pharmacokinetic features (Blondeau 1999, Stahlmann et al. 1998). For the medical important of this drug author have been study its structure by recording and investigate its electron ionization (EI) mass spectra at different electron energies 70 and 15 eV. Also, the chemical ionization (CI) mass spectrum has been recorded and investigated. The main fragmentation processes in EI and CI have elucidated and discussed. The main fragment ions in EI mass spectra are [M-C4H8N] + and fragment [M- C4H8N- CO2] +, while [MH- CO2]+ ion are the most fragment ion in CI mass spectrum. On the other hand, the molecular structure optimization of sparfloxacin was calculated using the modified neglect of diatomic overlap (MNDO) semi-empirical molecular orbital method. Also, the thermochemical data such as heat of formations, total energy, ionization energy, electron affinity and dipole moment have been calculated and discussed.
Science Publishing Corporation
2018-03-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/9177
10.14419/ijac.v6i1.9177
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 74-78
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/9177/3395
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/9295
2018-06-12T11:38:22Z
IJAC:ART
Effect of light on persistence of imidacloprid in soil
Elzorgani, Mohammed G.A.
Persistence
Imidacloprid
Soil
Sunlight
Ultra Violet.
Imidacloprid are Applied Widely to Protect Crops from Damage by Insect Pest, the Residue Usually Come Into Contact with Soil, where They Undergo A Transformations That Lead to Formation of A Complex Pattern of Metabolites. This Study Was Performed to Study The Persistence And Degradation Of Imidacloprid In Gezira-Sudan Soil As Affected By UV And Sunlight Exposure.The High-Performance Liquid Chromatography (HPLC-DAD) Were Used To Characterize The Photodegradation Kinetics Under The Experiment Condition And To Identify The Main Photoproducts IMI-Urea In Soil Samples As To Propose Plausible Photodegradation Pathways Of Imidacloprid In Soil.Samples Of Soil Were Placed In Petri-Plate, Brought To Field Capacity Moisture And Then Exposed To UV And Sunlight. Residues Of Imidacloprid In Soil Dissipated With Half-Life Of 15.84 Under UV And 60.2 Days Under Sunlight. Exposure Of Thin Film Of Imidacloprid To UV And Sunlight Confirmed That It Is Photo Labile And Dissipated Very Fast With Half-Life 15.05 And 8.6 Days Under UV And Sunlight, Respectively. The Formation Of Imidacloprid-Urea As Main Photoproduct Was Only Detected On Day 7 In The Case Of Thin-Film Exposed To UV-Light. The Study Revealed That UV Component Of Sunlight Is An Important Factor For Imidacloprid Dissipation From Soil Surface.
Science Publishing Corporation
2018-03-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/9295
10.14419/ijac.v6i1.9295
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 85-88
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/9295/3593
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/9312
2018-06-12T11:38:22Z
IJAC:ART
Theoretical investigations of ZnO/CdO material – A DFT approach
Jawaher, Rackesh
R, Indirajith
S, Krishnan
Bharani, Bharanidharan
R, Robert
S, Jerome Das
ZnO/CdO
DFT Study
NLO
NBO
MEP.
The theoretical investigations of ZnO/CdO material were carried out by using ab initio calculations. The bond parameters such as bond lengths, bond angles and dihedral angles were calculated at DFT/B3LYP/LANL2DZ level of theory. The NLO property of the title molecule was calculated using a first order hyperpolarizability calculation. NBO study reveals that the hyperconjucative interactions between the material. Homo-Lumo analysis the charge transfer occurs within the molecule. MEP surface predicts the reactive sites of the present molecule. In addition of Mulliken atomic charges and thermodynamic parameters were also plotted and calculated.
Science Publishing Corporation
2018-03-10
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
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http://www.sciencepubco.com/index.php/IJAC/article/view/9312
10.14419/ijac.v6i1.9312
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 79-84
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/9312/3557
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/10382
2018-06-12T11:38:22Z
IJAC:ART
Interesting Mechanistic Approach for Nitrogen Heterocycles of Industrial Importance
Zargar, N.D.
Khan, K.Z.
N-Heterocycles
Porphyrins
Selfassembly
Fungicidal
Pyrrole Rings
Phthalimide
Dye
Polymer
Indole
Triazolines.
Nitrogen heterocycles have played an important role in different industrial sectors.Porphyrins the macrocyclic compounds containing pyrrole rings provide an extremely versatile platform with desired peripheral functionality and metal complexes to form the self assembly under varying reaction conditions. Haemoglobin an iron complex is responsible for binding molecular oxygen and transporting it to different sites. Mechanistically interesting N-heterocycles, Arylidene-1,3-indandione adducts (6) and (7) synthesized frequently are of immense pharmaceutical importance showing fungicidal and bactericidal activities. Nitrogen heteroatom phthalimide derivatives(8),(9) and (10) have been evaluated as possible potential prodrugs. A wide range of Nitrogen heterocycles have been synthesized for every imaginable use in dye and polymer industries.
Science Publishing Corporation
2018-04-23
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/vnd.openxmlformats-officedocument.wordprocessingml.document
application/vnd.openxmlformats-officedocument.wordprocessingml.document
http://www.sciencepubco.com/index.php/IJAC/article/view/10382
10.14419/ijac.v6i1.10382
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 89-94
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/10382/4711
http://www.sciencepubco.com/index.php/IJAC/article/view/10382/17478
http://www.sciencepubco.com/index.php/IJAC/article/view/10382/17479
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/10630
2018-09-17T23:21:41Z
IJAC:ART
Heavy metals assessment of soils in and around Kama-Otto and Kwotto artisanal mining of mica, cassiterite and tantalite in Nasarawa state, Nigeria
Isa Osu, Usman
Edith Bolanle, Agbaji
Hadiza, Omenesa
Artisanal Mining
Geo-Accumulating Index
Heavy Metals
Nemerow Index Method.
This study assesses the level of heavy metal in Soils within the vicinity of artisanal mining of Mica, Cassiterite and Tantalite in Nasarawa State, Nigeria. Soil samples of Kama-otto and Kwotto artisanal mining were collected and analyzed using mass-plasma Atomic emission spectroscopy (MP-AES). Samples were also collected in Angwan-Mada, a non-artisanal mining environment, for comparison. Pollution assessment of soil samples using the following geochemical parameters such as contamination factor (CF), pollution load index (PLI), and Enrichment factor (EF), Nemerow index method (IIN) and Geo-accumulating index (Igeo) were carried out. The results indicate an elevation in pollution status in the order of Kama-otto mining, Kwotto mining, Kama-otto, Kwotto and Angwan-mada. The concentrations of Cd, Cr and Mn were significant in the sampled areas (P < 0.05). Â
Science Publishing Corporation
2018-07-23
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/10630
10.14419/ijac.v6i2.10630
International Journal of Advanced Chemistry; Vol. 6 No. 2 (2018); 135-139
2310-2977
10.14419/ijac.v6i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/10630/6765
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/10808
2018-06-12T11:38:22Z
IJAC:ART
Formulation, physicochemical evaluation and antimicrobial activity of green toothpaste on streptococcus mutans
Ogboji, Joel
Y. Chindo, I.
Jauro, Aliyu
Boryo, D
N. M., Lawal
Antimicrobial Activity
Bioactive
Cosmetic Product
Streptococcus Mutant
Toothpaste
Background: Toothpaste is a cosmetic product with increasing relevance and demand. However most commercial toothpaste consist of complex chemicals whose health safety remain unclear.Objectives: The present work involves the formulation, and comparative physicochemical evaluation and antimicrobial activity of green toothpaste and three commercial toothpastes (Close-Up, Oral-B and Dabur-Herbal)Methods: The green toothpaste were formulated using Tumeric (Curcuma longa), Aloe Vera (Aloe barbadensis miller), Guava (Psidium guajava), Mint (Mentha piperita), Neem (Azadirachta indica), and Lemon (Citrus lemon) as the active ingredients and comparatively evaluated for various properties like colour, taste, odor, texture, abrasivity, spreadability, cleansing ability, foaming ability, stability, homogeneity, moisture content, gritty matter and pH. The antimicrobial activity of the formula was comparatively tested on Streptococcus mutans (the major causative organism of dental caries).Results: Cold extracts of plant materials with ethanol showed a relative low (3.6% - 6.8%) percentage recovery of bioactive compounds. Physico-chemical tests revealed that the spreadability, pH, foam, gritty matter and homogeneity gave favourable results that compares well with commercial ones. The result of the antimicrobial test shows significant difference between the mean zones of inhibition of the various toothpastes.Conclusion: The results of the study agree with traditional application of the herbaceous plants and showed that the formulated toothpaste contains phytochemicals which possess antimicrobial properties and may be safer compared to toothpaste consisting of synthetic chemicals.Â
Science Publishing Corporation
2018-06-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/10808
10.14419/ijac.v6i1.10808
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 108-113
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/10808/5491
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/10902
2018-06-12T11:38:22Z
IJAC:ART
Kinetics and mechanism of the reduction of n-(2-hydroxyethyl)ethylenediaminetriacetatoiron(III) complex by thioglycol in bicarbonate buffer medium
U. Nkole, I
R. Osunkwo, C
D. Onu, A
D. Onu, O
Kinetics
N-(2-Hydroxyethyl)ethylenediaminetriacetatoiron(III) Complex
Mechanism
Thioglycol
Reduction
The kinetics and mechanism of reduction of N-(2-hydroxyethyl) ethylenediaminetriacetatoiron (III) complex (hereafter [Fe(III)HEDTAOH2]) by thioglycol (hereafter RSH) has been studied spectrophotometrically in a bicarbonate buffer medium. The study was carried out under pseudo-first order conditions of an excess of thioglycol concentration at 28 ± 1℃, I = 0.44 mol dm-3 (KNO3) and λmax = 490 nm. The reaction is first order in [Fe(III)HEDTAOH2] and half order in [RSH] and a stoichiometric mole ratio of [Fe(III)HEDTAOH2]: RSH is 2:1. Reaction rates increased with increase in ionic strength (I) and dielectric constant (D) of the reaction medium of the reaction. The reaction displayed positive primary salt effect, which suggests the composition of activated complex are likely charged reactants ions. Test for possibility of an intermediate complex formation shows negative as Michaelis-Menten plot was linear with very negligible intercept. Based on the findings, outer-sphere mechanism is proposed for the reaction. The experimental rate law obtained is; - = k2 [Fe(III)HEDTAOH2][RSH]½  Â
Science Publishing Corporation
2018-06-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/vnd.openxmlformats-officedocument.wordprocessingml.document
http://www.sciencepubco.com/index.php/IJAC/article/view/10902
10.14419/ijac.v6i1.10902
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 102-107
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/10902/5490
http://www.sciencepubco.com/index.php/IJAC/article/view/10902/17481
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/11019
2018-09-17T23:22:56Z
IJAC:ART
A semi-empirical estimation of ground and excited state dipole moments of zinc phthalocyanine from solvatochromic shift data
Ogunsipe, Abimbola
Dipole Moment
Excited State
Ground State
Solvatochromism
Zinc Phthalocyanine.
A semi-empirical determination of ground and excited state dipole moments of zinc phthalocyanine (ZnPc) from solvatochromic shifts is hereby presented. The ratio of the excited- and ground-state dipole moments of ZnPc ( ) was estimated by a combination of the Bakshiev and the Kawski-Chamma-Viallet’s equations, while the difference in the excited- and ground-state dipole moments (Dm) was estimated usingthe molecular-microscopic solvent polarity parameters ( ), alongside the Stokes’ shifts (Dá¿¡) in the various solvents. The dipole moment of ZnPc is significantly higher in the excited singlet state (me = 3.12 D) than in the ground state (mg = 1.50 D). Obviously charge separation is greater in the excited state of ZnPc than in its ground state. Â
Science Publishing Corporation
2018-09-17
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/11019
10.14419/ijac.v6i2.11019
International Journal of Advanced Chemistry; Vol. 6 No. 2 (2018); 190-194
2310-2977
10.14419/ijac.v6i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/11019/9203
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/11126
2018-06-12T11:38:22Z
IJAC:ART
Molecular structure, NBO analysis, ï¬rst hyper polarizability, and homo-lumo studies of Ï€-extended tetrathiafulvalene (EXTTF) derivatives connected to Ï€-nitro phenyl by density functional method
Abbaz, Tahar
Bendjeddou, Amel
Villemin, Didier
Computational Chemistry
Density Functional Theory
Electronic Structure
Quantum Chemical Calculations
Tetrathiafulvalenes
In these study we have been obtained the structural properties of (exTTF) derivatives 1-4 by using B3LYP/6-31G(d,p) of Density Functional Theory (DFT) utilizing Becke three exchange functional and Lee Yang Paar correlation functional. The calculation of ï¬rst hyperpolarizability shows that the molecules are attractive molecules for future applications in non-linear optics. Molecular electrostatic potential (MEP) at a point in the space around a molecule gives an indication of the net electrostatic effect produced at that point by the total charge distribution of the molecule. The calculated HOMO and LUMO energies show that charge transfer occurs within these molecules.Â
Science Publishing Corporation
2018-06-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/11126
10.14419/ijac.v6i1.11126
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 114-120
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/11126/5492
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/11326
2018-06-12T11:38:22Z
IJAC:ART
Electron transfer reaction of Tris(1,10-phenanthroline) cobalt(III) complex [Co(phen)3]3+ and thiosulphate ion (S2O32−) in an aqueous acidic medium
R. Osunkwo, C
U. Nkole, I
D. Onu, A
O. Idris, S
Complex
Electron transfer
Kinetics
Thiosulphate ion
Tries (1-10-phenanthroline) cobalt (III).
The electron transfer reaction of Tris (1,10-phenanthroline)cobalt(III) complex by thiosulphate ion has been studied in an aqueous acidic medium. Stoichiometric determination shows that for one mole of the oxidant that was reduced, one mole of the reductant was consumed; the reaction conforms to an overall equation: 2[Co(phen)3]3+ + 2S2O32− → 2[Co(phen)3]2+ + S4O62− Kinetics study carried out under pseudo-first order condition shows that the reaction proceeded via a one-way acid-dependent pathway and was third order overall; zero order with respect to the oxidant concentration, second order with respect to the reductant concentration and first order with respect to the hydrogen ion concentration. The empirical rate law conforms to the equation: −  {Co(phen)3}3+] = a [H+] [S2O32−]2 ‘a’ = 128.26 dm6 mol−2 s−1: at [H+] = 2.0 × 10−2 mol dm−3, µ = 0.4 mol dm−3 (NaCl), T = 28 ± 1ËšC and λmax = 495 nm.The rate of reaction increased at the increase in ionic strength and at the decrease in medium dielectric constant. Added cations and anions catalyzed and inhibited the reaction rates respectively. The Michaelis-Menten plot of 1/k1 versus 1/[S2O32−]2 started from the origin. Hence based on spectroscopic investigation, thermodynamic information from temperature dependence studies and kinetic evidence from Michaelis–Menten plots and the interactions with added ions, an outer-sphere mechanism has been rationalized for this reaction. The mechanistic scheme of the reaction was proposed via the stated mechanistic route.  Â
Science Publishing Corporation
2018-06-12
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/vnd.openxmlformats-officedocument.wordprocessingml.document
application/vnd.openxmlformats-officedocument.wordprocessingml.document
http://www.sciencepubco.com/index.php/IJAC/article/view/11326
10.14419/ijac.v6i1.11326
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 121-126
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/11326/5663
http://www.sciencepubco.com/index.php/IJAC/article/view/11326/17483
http://www.sciencepubco.com/index.php/IJAC/article/view/11326/17484
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/11795
2018-06-12T11:42:19Z
IJAC:ART
Quantum chemical investigation of spectroscopic, electronic and NLO properties of (1E, 4E)-1-(3-nitrophenyl)-5-phenylpenta-1,4-dien-3-one
Benhalima, N
Yahiaoui, S
Boubegra, N
Boulakoud, M
Megrouss, Y
Chouaih, A
Hamzaoui, F
DFT
HOMO
LUMO
NBO
NLO
NPA.
In the present work the optimized molecular geometry and harmonic vibrational frequencies of chalcone derivative were calculated by DFT/B3LYP method with 6–31G (d,p) basis set. The vibrational assignments were performed on the basis of the potential energy dis-tribution (PED) of the vibrational modes. Natural bond orbital (NBO) analysis has been performed on title compound using B3LYP/6–31G (d,p) and HSEh1PBE /6–31G (d,p) levels in order to elucidate intermolecular hydrogen bonding, intermolecular charge transfer (ICT) and delocalization of electron density. Mulliken atomic charges, natural population analysis (NPA) and atomic polar tensors (APT) were performed. The nonlinear optical properties of the title compound are also calculated and discussed. Molecular electrostatic poten-tial and HOMO-LUMO energy levels are also computed. Ultraviolet–visible spectrum of the title compound has been calculated using TD–DFT method. The molecular orbital contributions were studied by density of states (DOSs). Global reactivity descriptors have been calculated using the HOMO and LUMO to predict compound reactivity.  Â
Science Publishing Corporation
2018-06-12
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/11795
10.14419/ijac.v6i1.11795
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 121-131
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/11795/5664
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/12175
2018-06-12T11:38:22Z
IJAC:ART
Probing the mechanism of xanthine oxidase and 2-amino xanthine: an implication of energy, charge bond order and wave function.
Bitew, Mamaru
Hyperuricemia
Molybdenum
Stepwise and Xanthine Oxidase.
Xanthine oxidase (XO) is an important molybdenum-containing enzyme catalyzing the hydroxylation of hypoxanthine to xanthine and xanthine to uricacid. The mechanistic action by which xanthine oxidase oxidizes purine derivatives is not well understood. A better understanding of the overall mechanism is supposed to enhance our ability to control the metabolic properties of potential drug molecules metabolized by this enzyme. In this work a model substrate, 2-Amino Xanthine has been used to study the mechanistic action of the enzyme. For this reason, the present theoretical work was intended to probe a unified mechanism for the oxidation of 2-Amino Xanthine by xanthine oxidase. Parameters like total electronic energy, Mulliken atomic charges, wave functions, and percent contribution of chemical fragments were generated using a DFT method employing B3LYP level of theory with 6-31G(d',p') basis set for nonmetals and LanL2DZ basis set for molybdenum. AOmix software package that employs single point energy output as an input file was employed for wave function and percent fragment analysis. From these result new reaction intermediates and plausible reaction mechanism root has been reported for reductive and oxidative half reaction using 2-Amino Xanthine as model substrate. In this work it can be concluded that a stepwise mechanistic route with hydrogen bonding reaction complex and active site resemble very rapid Mo (V) intermediate is most plausible.    Â
Science Publishing Corporation
2018-06-01
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Peer-reviewed Article
application/pdf
application/vnd.ms-excel
application/vnd.ms-excel
http://www.sciencepubco.com/index.php/IJAC/article/view/12175
10.14419/ijac.v6i1.12175
International Journal of Advanced Chemistry; Vol. 6 No. 1 (2018); 95-101
2310-2977
10.14419/ijac.v6i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/12175/5433
http://www.sciencepubco.com/index.php/IJAC/article/view/12175/17492
http://www.sciencepubco.com/index.php/IJAC/article/view/12175/17493
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/12521
2018-09-17T23:21:41Z
IJAC:ART
The effect of temperature on cadmium oxide (CdO) nanoparticles produced by synchrotron radiation in the human cancer cells, tissues and tumors
Heidari, Alireza
Cadmium Oxide (CdO)
Absorption Spectrum
Synchrotron Radiation Ablation
Nanoparticles
Alloy
Synchrotron Radiation Emission
Nanocomposite.
In this work, the effect of temperature of the ablation environment on the properties of Cadmium Oxide (CdO) nanoparticles produced by synchrotron radiation is investigated. To produce nanoparticles, synchrotron radiation pulse with 1064 (nm) wavelength is used to emit Cadmium in the human cancer cells, tissues and tumors. All test parameters were kept constant and human cancer cells, tissues and tumors temperature was changed to produce samples at 20°C and 65°C. Then, ATR–FTIR, XRD, TEM and UV–Visible spectroscopy analyses were performed to investigate their properties. The results show that the size of nanoparticles is increased by increase in temperature of ablation environment. In addition, in the current experimental research, Gold (Au)–Cadmium Oxide (CdO) alloy is created at the size of nano. In this regard, same volume of Gold and Cadmium Oxide (CdO) solutions were mixed together and emitted by the synchrotron radiation pulse with wavelength of 532 (nm). The Gold and Cadmium Oxide (CdO) solutions have been produced, separately, using synchrotron radiation ablation process. To produce them, synchrotron radiation pulse with wavelength of 1064 (nm) and pulse width of 7 (ns) and repeating frequency of 5 (Hz) was used. The results show that synchrotron radiation emission with wavelength of 532 (nm) is an appropriate method for producing Gold compounds in the size of nano. Â
Science Publishing Corporation
2018-07-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/12521
10.14419/ijac.v6i2.12521
International Journal of Advanced Chemistry; Vol. 6 No. 2 (2018); 140-156
2310-2977
10.14419/ijac.v6i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/12521/6904
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/12528
2018-09-17T23:21:41Z
IJAC:ART
Vibrational biospectroscopic study and chemical structure analysis of unsaturated polyamides nanoparticles as anti–cancer polymeric nanomedicines using synchrotron radiation
Heidari, Alireza
Unsaturated Polyamides Nanoparticles
Attenuated Total Reflection–Fourier Transform Infrared (ATR–FTIR) Spectroscopy
Carbon–Carbon Double Bond
Hardening–Cross Link
Cross Link
Raman Spectroscopy
Anti–Cancer Polymeric Nanomedicines
Synchrotron Radiati
Firstly, unsaturated polyamides nanoparticles were hardened by continuous synchrotron radiation and then, the induced changes in its chemical structure were studied by Attenuated Total Reflection–Fourier Transform Infrared (ATR–FTIR) spectroscopy. It was shown that applying synchrotron radiation for hardening not only leads to reduction of hardening time but also creates cross link in polymer by breaking Carbon–Carbon double bond, without any considerable change in its chemical structure. In addition, an unsaturated polyamide nanoparticle as anti–cancer polymeric nanomedicines is hardened by synchrotron radiation. Its chemical structure before and after hardening is studied using Raman and Attenuated Total Reflection–Fourier Transform Infrared (ATR–FTIR) spectroscopy. The results show that Raman spectroscopy is considerably better than Attenuated Total Reflection–Fourier Transform Infrared (ATR–FTIR) spectroscopy in detecting the changes happened in chemical structure. Â
Science Publishing Corporation
2018-08-04
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/12528
10.14419/ijac.v6i2.12528
International Journal of Advanced Chemistry; Vol. 6 No. 2 (2018); 167-189
2310-2977
10.14419/ijac.v6i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/12528/7248
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/13047
2018-09-17T23:21:41Z
IJAC:ART
Non enzymatic NADH-dependent reduction of Cis-[Co(en)2(H2O)2]3+ in aqueous medium
Behera, Bharati
Behera, Jashoda
Diaquabisethylenediamine Cobalt(III)
Electron Transfer
Kinetics
NADH
Nonenzymatic.
The kinetics of the electron transfer reaction of NADH with Cis-[Co(en)2(H2O)2]3+ has been studied over the range 1.0 ≤ 102 [NADH] ≤ 3.0 mol dm-3, 7.0 ≤ pH ≤ 8.0 and 200C ≤ t ≤ 350C in aqueous medium. The rate of electron transfer reaction was found to be first-order dependence each in [NADH]T and Cis-[Co(en)2(H2O)2]3+T. The products of the reaction were found to be NAD+ and Co(II). The corresponding activation parameters of the electron transfer reactions were found to be as ΔH#=27.55 kJ mol-1 and  ΔS#= -189.35 JK-1mol-1.Â
Science Publishing Corporation
2018-07-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/13047
10.14419/ijac.v6i2.13047
International Journal of Advanced Chemistry; Vol. 6 No. 2 (2018); 163-166
2310-2977
10.14419/ijac.v6i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/13047/7030
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/13107
2018-09-17T23:21:40Z
IJAC:ART
Synthesis, characterization, x-ray diffraction studies and biological activities of iron(III) and cobalt(II) complexes with alanine
Musa, Shuaibu
O. Idris, S
D. Onu, A
Synthesis
Characterization
X-Ray Diffraction
Electrolyte
Biological Activities.
The resulted complexes produced between Fe (III) and Co (II) with biological molecules like amino acids play an important role in human life. They can be used as bioactive compounds as well as in industries. Fe (III) and Co (II) complexes are synthesized with Alanine amino acid. The complexes were characterized by X-ray diffraction, magnetic suscetivility, elemental analysis (AAS), molar conductance, melting point, infrared and uv-visible spectrophotometry analyses. The elemental analyses were used to determine the chelation ratio, 1:3(metal: ligands) for iron (III) Alanine and 1:2 ratio for cobalt (II) Alanine. The molar conductivity of the complexes show that the complexes are not electrolytic in nature. The x-ray data suggest monoclinic crystal system for all the complexes with the exception of Co-alanine, which is hexagonal. The magnetic susceptivility and electronic spectra suggest the complexes are high spin with octahedral geometry.The complexes show enhance activity in comparable to the amino acid. Â
Science Publishing Corporation
2018-07-23
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/13107
10.14419/ijac.v6i2.13107
International Journal of Advanced Chemistry; Vol. 6 No. 2 (2018); 132-134
2310-2977
10.14419/ijac.v6i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/13107/6764
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/13702
2018-09-17T23:21:41Z
IJAC:ART
Corrosion inhibition and adsorption studies by Pogostemonquadrifolius methanolic stem extract (PQMSE) on mild steel in 1M HCL
M, Jisha
Hukuman N. H, Zeinul
P, Leena
Pogostemon quadrifolius
Stem
Corrosion Inhibitor
Weight Loss
Electrochemical Studies
Adsorption.
Pogostemon quadrifolius methanolic stem extract (PQMSE) has been investigated as non toxic green corrosion inhibitor for mild steel in 1 M HCl. Corrosion rates were evaluated at 303 K, 313 K and 323 K by weight loss method at varying inhibitor concentrations. Using electrochemical impedence spectroscopy (EIS) and polarisation techniques, corrosion studies were done at 303 K in various inhibitor concentrations. Adsorption studies were also conducted to study the mechanism of corrosion inhibition. Scanning electron microscopy (SEM) and Fourier – transform infrared (FT-IR) spectroscopy were used to study the surface morphology of mild steel. Electrochemical studies reveal that PQMSE exhibit excellent corrosion inhibition efficiency and it function as a mixed type of inhibitor at 303 K. The surface interaction of PQMSE on mild steel in 1 M HCl was obeying Langmiur adsorption isotherm at all studied temperatures.
Science Publishing Corporation
2018-07-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/13702
10.14419/ijac.v6i2.13702
International Journal of Advanced Chemistry; Vol. 6 No. 2 (2018); 157-162
2310-2977
10.14419/ijac.v6i2
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/13702/7029
http://www.sciencepubco.com/index.php/IJAC/article/view/13702/7031
Copyright (c) 2018 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/14703
2019-12-15T19:51:56Z
IJAC:ART
Intermolecular interactions, spectroscopic and theoretical investigation of 4-aminoacetophenone
Rocha, Mariana
Di Santo, Alejandro
Ben Altabef, Aida
M. Gil, Diego
4-Aminoacetophenone
NBO Analysis
Vibrational Spectra
Hirshfeld Surface Analysis
Intermolecular Interactions.
The molecular structure of 4-aminoacetophenone (PAAP) was determined by DFT calculations using different basis sets. The structural parameters, electronic properties and vibrational wavenumbrers of the optimized geometry have been determined. The vibrational wave-numbers of the fundamental modes of the title compound have been precisely assigned and analyzed and the theoretical results are compared with the experimental vibrations observing a very good correlation. TD-DFT approach was applied to assign the electronic transitions ob-served in the experimental UV-vis spectrum. The molecular electrostatic potential map was used to identify the possible electrophilic and nucleophilic sites. Natural bond orbital (NBO) analysis and atoms in molecules (AIM) approach are applied in order to quantify the relative strength of hydrogen bonding interactions and to account their effect on the stabilities of molecular arrangements. In addition, a detailed exploration of the intermolecular interactions that stabilizes the crystal packing has been performed by using the Hirshfeld surface analysis.  Â
Science Publishing Corporation
2019-05-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
application/vnd.openxmlformats-officedocument.wordprocessingml.document
http://www.sciencepubco.com/index.php/IJAC/article/view/14703
10.14419/ijac.v7i1.14703
International Journal of Advanced Chemistry; Vol. 7 No. 1 (2019); 1-12
2310-2977
10.14419/ijac.v7i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/14703/15518
http://www.sciencepubco.com/index.php/IJAC/article/view/14703/15519
http://www.sciencepubco.com/index.php/IJAC/article/view/14703/17518
Copyright (c) 2019 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/16098
2019-12-15T19:51:56Z
IJAC:ART
Synthesis and characterization of iron (III) complexes of l-leucine and l-methionine
Musa, Shuaibu
J F, Iyun
Musa Abubakar, Shuaibu
L-Leucine
L-Methionine
Chelation
Electrolytic and Complexes.
The resulted complexes produced between Fe (III) and biological molecules like amino acids play an important role in human life. Fe (III) complexes are synthesized with l-Leucine and l-Methionine. The complexes were characterized by elemental analysis (AAS), molar conductance, melting point, infrared and uv-visible spectrophotometry analyses. The elemental analyses were used to determine the chelation ratio, 1:3(metal: ligands). The molar conductivity of the complexes show that the complexes are not electrolytic in nature. Moreover, the melting point of the tris (l-Leucine) iron (III) and tris (l-Methionine) iron (III) are 2390C and 210oC respectively. Â
Science Publishing Corporation
2019-05-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/16098
10.14419/ijac.v7i1.16098
International Journal of Advanced Chemistry; Vol. 7 No. 1 (2019); 73-76
2310-2977
10.14419/ijac.v7i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/16098/15706
Copyright (c) 2019 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/17281
2019-12-15T19:51:56Z
IJAC:ART
Effect of acid and ionic strength on the kinetics of electron transfer reaction of n-(2-hydroxy-ethyl) ethylenediamine-n, n’, n’-triacetatocobaltate (ii) complex with hypochlorite ion in aqueous acidic medium
Ahmed, Y.
D.Onu, A.
O.Idris, S.
S.Iliyasu, S.
B.Abiti, Y.
Aminocarboxylate
Electron Transfer Reaction
Hyphochlorite
Ionic Strength
Kinetics.
The influence of acid and ionic strength on the rate of electron transfer reaction of N-(2-hydroxy-ethyl)ethylenediamine-N,N’,N’-triacetatocobaltate(II)(hereafter, complex with Hypochlorite ion in aqueous nitric acid medium have been studied at I = 0.2 mol dm-3(NaNO3), [H+] = 1 × 10-2 mol dm-3, , T = 300 ± 1 K and λmax = 525 nm. Stoichiometric study showed 1:1 `mole ratio. The rate law derived from the kinetic study under pseudo first order condition is . The rate constant of reaction,  varies inversely with acid concentration, [H+]. The overall rate law is therefore represented as: . The reaction displayed positive salt effect which suggests the activated complex was made up of similar charged species. The reaction was catalysed by addition of formate, HCOO- and potassium, K+ ions and the Michaelis-Menten’s plot gave zero intercept indicating the absence of intermediate complex. A reaction mechanism via an outer-sphere pathway is proposed for this reaction. Â
Science Publishing Corporation
2019-05-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/17281
10.14419/ijac.v7i1.17281
International Journal of Advanced Chemistry; Vol. 7 No. 1 (2019); 13-18
2310-2977
10.14419/ijac.v7i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/17281/15520
Copyright (c) 2019 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/17581
2019-12-15T19:51:56Z
IJAC:ART
Synthesis, characterization and DFT studies of a palladium (ii) complex with bidentate Schiff base ligands
Chakrabarty, Surajit
Bhattacharjee, Shoumik
Rahmani, Rachida
Hussain Sheikh, Afzal
Chouaih, Abdelkader
Hamzaoui, Fodil
Pd (II)
Bidentate
IR
UV-Vis
1H-NMR
DFT.
The N-donor bidentate complexes of Palladium (II) of the type [PdL1Cl2] and [PdL2Cl2] {where L1 = N, N'-bis(napthanidal)-1,4-diacetyldihydiimine and L2= N, N'-bis(napthanidal)-1,2-ethylenediimine} were synthesized by refluxing of PdCl2 in acetonitrile with ligand L1 and L2. Complexes have been characterized by elemental analysis, conductivity measurement, IR, UV-Vis and 1H-NMR spectroscopy. Full geometry optimization of the ground state of the complex [PdL1Cl2] was carried out using Density Functional Theory (DFT) at B3LYP functional with 6-311G(d, p) basis set for C, N, Cl, H and LANL2DZ basis set for Pd atoms in gas and solvent (DMSO) phases. The calculated geometric and spectral results reproduced the experimental data with well agreement. Theo-retical calculated molecular orbitals (HOMO–LUMO) and their energies have been calculated that suggest charge transfer occurs within the complexes. The HOMO-LUMO energy gap was found 2.6210 eV. The electrophilic and nucleophilic sites are theoretically evaluated by molecular electrostatic potential. Â
Science Publishing Corporation
2019-05-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/17581
10.14419/ijac.v7i1.17581
International Journal of Advanced Chemistry; Vol. 7 No. 1 (2019); 67-72
2310-2977
10.14419/ijac.v7i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/17581/15527
Copyright (c) 2019 International Journal of Advanced Chemistry
oai:ojs.pkp.sfu.ca:article/18367
2019-12-15T19:51:56Z
IJAC:ART
Evaluation of retardant property of green hair growth retardant formula
Ogboji, Joel
Depilatory Cream
Extracts
Phytochemicals
Retarding Property
Toxicity.
Background: The relevance of depilatory creams has appreciated significantly in recent time and their demand is on the increase. However most commercial depilatory creams contain chemicals with questionable health safety. These synthetic chemicals cause scaring, itching and burns on the skin.Objectives: The study attempted to formulate green hair growth retarding cream, testing the formula for phytochemicals, hair growth retarding property and toxicity.Methods: the cream was formulated from extracts of Tumeric (Curcuma longa), Aloe vera (Aloe barbadensis miller), Guava (Psidium guajava) and Neem (Azadirachta indica), evaluated for its phytochemical constituents and tested for its hair growth retardant property and toxicity on mice.Results: The results show the presence of phytochemicals like tannins, phenols, flavonoids, terpeniods, alkaloids, volatile oil, anthroquinone, glycosides, saponins and a 25% hair growth retarding efficiency on tested mouse, no signs of itching, redness, swelling and topical injuries on the mouse.Conclusion: overall, the research therefore provide convincing evidence of the safety of the formula over the conventional ones and also exhibit satisfactory hair regrowth retarding property. Â
Science Publishing Corporation
2019-05-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
application/pdf
http://www.sciencepubco.com/index.php/IJAC/article/view/18367
10.14419/ijac.v7i1.18367
International Journal of Advanced Chemistry; Vol. 7 No. 1 (2019); 19-25
2310-2977
10.14419/ijac.v7i1
eng
http://www.sciencepubco.com/index.php/IJAC/article/view/18367/15521
Copyright (c) 2019 International Journal of Advanced Chemistry
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