Aims: Evaluation the impact of quinones containing alkylamio groups upon biological activities and extent of napthoquinones based upon QSAR technique. Study Design: QSAR Approach. Place and Duration of Study: Data were collected from literature. Methodology: About eleven naphthoq...
Open access
Research Article10.9734/IRJPAC/2016/30468
Complexation of Copper (II) ions from aqueous media into chloroform solution of N,N’-ethylenebis(4-propionyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-oneimine) (H2PrEtP) Schiff base in chloroform was studied. Effect of various parameters for the extraction such as pH of aqueous...
Open access
Research Article10.9734/IRJPAC/2016/30386
The inhibition effect of three bis- azole derivatives, namely bis-[5-hydroxy-1, 3, 4- oxadiazol-2-yl] methane, bis-[5-chloro-1, 3, 4- oxadiazol-2-yl] methane and bis-[5-thiol-1, 3, 4- oxadiazol-2-yl] methane have been investigated against the copper corrosion in 1.0 M HCl solutio...
Open access
Research Article10.9734/IRJPAC/2016/30498
The purpose of this work was to study the effect of various process and formulation parameters on size and shapes of silver nanoparticles (AgNPs) based on surface plasmon resonance (SPR). AgNPs were prepared by chemical reduction using formaldehyde (HCHO) as reducing agent and ca...
Open access
Research Article10.9734/IRJPAC/2016/29657
We report accurate nonlinear optical (NLO) properties of mixed thiophene and ethylene dioxythiophene oligomers using Density Functional Theory at the B3LYP and B3PW91 levels of theory using 6-31G basis set using Gaussian98 software package. The geometry optimizations of all molec...
Open access
Research Article10.9734/IRJPAC/2016/26321
A Ni–Al composite was electrodeposited on Ni substrate and its corrosion characteristic was investigated after 72 hr. immersion in 2M NaCl solution, compared with a pure Ni coating. A corrosion product layer could be formed on Ni–Al composite surface during this immersion time wh...
Open access
Research Article10.9734/IRJPAC/2016/30296
Surface sediments were collected from Itu, Qua Iboe, Imo, Atabong and Iko Rivers within Niger Delta, Nigeria and assessed for their trace metals contents. Sediments were also obtained from Ekpene Ukpa River where there is no major anthropogenic source of contaminants as Control....
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Research Article10.9734/IRJPAC/2016/29408
With immobilized or adsorbed enzymes or protein, many improved features such as stability, reusability, continuous process, control of reactions, more favourable economic factors can be expected. For this purpose, in this study, the adsorption properties of casein onto some oxide...
Open access
Research Article10.9734/IRJPAC/2016/26191
Aims: A simple, reproducible method was developed for the simultaneous determination of Diphenhydramine and Naproxen in tablet formulation using reverse phase HPLC method. Methodology: HPLC separation was carried over on Thermo hypersil – keystone C18 (250 x 4.6 mm,...
Open access
Research Article10.9734/IRJPAC/2016/30189
Phosphoramidite are the DNA building blocks. For the DNA synthesis to proceed it is necessary to block or protect all the nucleophilic centres not involved in the reaction at each step of the synthesis. The commonly used DNA protecting groups includes; dimethoxytrityl (DMT) which...
Open access
Research Article10.9734/IRJPAC/2016/30132
In this study, we analyzed in a theoretical form the behavior of 2-nitrofuran and 3-nitrofuran acting as dienophilic electrophiles in polar cycloaddition reactions joint to different dienes. The reactivity and regioselectivity was discussed employing global and local reactivity i...
Open access
Research Article10.9734/IRJPAC/2016/30222
A 2-pyrazoline based bi dentate ligand 3-(2-thiophen-2-yl)-5-(4-bromophenyl)-1-carbothiomyl-2-pyrazoline has been synthesized by Claisen-Schmidt condensation of 2-acetylthiophene with 4-bromo benzaldehyde followed by cyclization of the resulting chalcone with thiosemicarbazide. T...
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Research Article10.9734/IRJPAC/2016/29451
Being toxic, Congo red is one of the most important dyes to be treated before being disposed of into waters. In the present study, dried powdered branches and leaves from an ornamental plant (Polyalthia longifolia) have been investigated for the biosorptive removal of Congo red d...
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Research Article10.9734/IRJPAC/2016/29758
Ultrasonic velocity (u), density (r), refractive index (n) and relative viscosity (hr) measurements were carried out for ranitidine hydrochloride in aqueous-sodium chloride/sucrose solutions at 30°C in order to understand the effect of electrolyte and non-electrolyte on physicoch...
Open access
Research Article10.9734/IRJPAC/2016/29691
The crystal structures and crystal chemistry of Cs2Mg(CrO4)2·6H2O and of twelve representatives along the Rb2Mg(Cr1‑xSxO4)2×6H2O solid solution series, including the two endmembers, were studied using single crystal X-ray diffraction data. The Rb2Mg(Cr1‑xSxO4)2×6H2O system seems...
Open access
Research Article10.9734/IRJPAC/2016/29171