The potential of a low-cost periwinkle shell powder (PSP) for the adsorption of Cr(II) and Zn(II) ions from aqueous media was investigated by batch mode. The PSP produced was chemically activated with 0.1M H2SO4. Scanning electron microscopy, Fourier transform infrared spectrosco...
Open access
Research Article10.9734/IRJPAC/2016/31440
The effect of various polar solvents on the absorption and dual fluorescence of 4- (dimethylamino)benzaldehyde (DMABA) was investigated. It was found that in non- polar solvents DMABA shows only one emission band, however in polar solvents second emission band at longer wavelengt...
Open access
Research Article10.9734/IRJPAC/2016/31560
A rapid high-performance liquid chromatography method was developed and validated for the determination of atorvastatin calcium in pharmaceutical dosage forms, and for evaluation of its stability in stress testing. Separation of atorvastatin was successfully achieved on a C-18 co...
Open access
Research Article10.9734/IRJPAC/2016/31250
Solid-state 1H nuclear-magnetic-resonance (NMR) measurements of polyaniline doped by HClO4, H2SO4, and H3PO4 were performed with magic-angle-spinning (MAS) methods to reveal the effects of protonation on chain arrangements and the electrical conductivity of polyaniline. In this s...
Open access
Research Article10.9734/IRJPAC/2016/31542
Polypropylene (PP) has been used extensively in many parts of the industry. The main reason for the frequent use of polypropylene is low cost, easy processing and high performance. Diatomite (D) has superior properties in terms of surface area, thermal conductivity, porosity, par...
Open access
Research Article10.9734/IRJPAC/2016/30960
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