The effects of substituents and solvents on the ground state molecular geometry, dipole moments (µ), polarisabilities (α) and frontier molecular orbital energies (EHOMO, ELUMO) and optical gap (ΔE) of 4-nitroaniline and its N-substituted alkyl derivatives were studied by the ab i...
Open access
Research Article10.9734/IRJPAC/2015/18195
The adsorption of 4-Nitrophenol in aqueous solution by B. eurycoma seed hull was studied under the influence of environmental factors. Our result showed that 0.5 g B. eurycoma seed hull can effectively achieve 98% removal of 4-Nitrophenol at pH 12, temperature 25°C, 40 mins conta...
Open access
Research Article10.9734/IRJPAC/2015/16207
Dyeing of nylon66 (polyamide) fabrics with disperse dyes; blue 56 and red 60 was carried out using microwave irradiation technique. Different parameters mainly, dyeing time, dye concentration, power of microwave, and Liquor ratios were studied. The results obtained as a result of...
Open access
Research Article10.9734/IRJPAC/2015/17922
Aims: To isolate and to characterize the chemical constituents in sinyo nakal (Duranta repens) fruits’ methanol extract. The fruits were collected from Jombang, East Java, Indonesia. Methodology: The fruits have been extracted with n-hexane in previous study to separate the nonpo...
Open access
Research Article10.9734/IRJPAC/2015/17616
New compounds namely amino-N'-(3-(hydroxyimino)butan-2-ylidene)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carbohydrazide (1), amino-N'-(thiophen-2-ylmethylene)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carbohydrazide (2) and amino-N'-(1-(pyridin-2-yl)ethylidene)-4,5,6,7-tetrahydrobenzo[b...
Open access
Research Article10.9734/IRJPAC/2015/17491
This study present the synthesis of eco-friendly poly(ester amide-urethane) coating from Thevetia peruviana seed oil (TPSO). FT-IR, 1H NMR and 13C NMR spectral analyses were used in confirming the structure of compounds. Physico-chemical properties of desaturated N,N'-bis (2-hydr...
Open access
Research Article10.9734/IRJPAC/2015/17769
This study is aimed to evaluate the effect of additives on cold flow properties of biodiesel fuel obtained from Azadirachta indica and Hevea brasiliensis, readily available seed oil in Nigeria. The seed oils were converted to biodiesels via transesterification and additives keros...
Open access
Research Article10.9734/IRJPAC/2015/16327
The volatile components of the leaf oil of Baeckea frutescens L. (Myrtaceae) from the Hatinh Province, Vietnam, were analysed by capillary gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) and co-elution techniques. The identified compounds constituted more...
Open access
Research Article10.9734/IRJPAC/2015/17199
Aims: To establish a new analytical method for the extraction and pre-concentration of V (IV) and V (V) species in real samples by cloud point extraction (CPE) coupled with spectrophotometry using two newly laboratory-made chelating reagents. Study Design: All factors affecting t...
Open access
Research Article10.9734/IRJPAC/2015/16431
Nalidixic acid was the first quinolone antibiotic introduced to the treatment of urinary tract infections. It was effective especially against Gram-positive and Gram-negative bacteria but resistance to it emerged rapidly. In this article we reviewed the newly synthesized nalidixi...
Open access
Research Article10.9734/IRJPAC/2015/17634