Chemisty Research Journal

Abstract In the present work, a computational study is performed in order to clarify the possible magnetic nature of gold. For such purpose, gas phase Au2 (zero charge) is modelled, in order to calculate its gas phase formation enthalpy. The calculated values were compared with the experimental value obtained by means of Knudsen effusion mass […]

Abstract Production of syngas as a raw and intermediate material is very important for industries. Despite numerous attempts made in industry, there are still many challenges in its production. One of these challenges is effect of temperature on catalyst deactivation and conversion which has a direct effect on yield of process. Thus, this study tends […]

Abstract The spatial and temporal variations of some heavy metals in the waters of oulja wells have been studied. The results obtained showed that the iron content in all the wells is below the limit value of the water used to produce drinking water (Moroccan standard). For the chrom, its concentration varies from one well […]

Abstract The objectives of this research are to extract the air-dried stem bark (500g) of citrus aurantifolia with methanol using cold infusion (maceration) technique, partition the extract  with solvents of graded polarities (n-hexane, ethyl acetate, n-butanol suspended in water) and phytochemically screened and fractionate and purify the n-butanol partitioned portion using a combination of column […]

Abstract In the present study, selenium nanoparticles (SeNPs) were prepared via selenious acid reduction with ascorbic acid in aqueous media and used for immobilization of hydrolytic enzyme chymotrypsin (CT). It was shown that CT is an effective stabilizer of SeNPs in solution at acidic pH values. CT did not stabilize SeNPs upon reaction in an […]

Abstract The ethanolic extract of Vitex doniana stem bark (11.9 g) was subjected to a silica gel accelerated column chromatography and eluents fractions (150 ml aliquots) obtained were collected and monitored with thin layer chromatography (TLC). Fractions with similar Rf values from same solvents system were poled together. Phytochemical test of all the fractions were […]

Abstract Casting method have been prepared films from composites of Polyvinyl alcohol and polyvinyl pyrrolidone(PVA-PVP) doped with different weight percentages of Cadmium sulfide (CdS).By using LCR meter in the frequency range (100 Hz to 5 MHz) at room temperature  to study the A.C electrical measurement of the films. The effectsof A.C electrical possessionsof PVA-PVP-CdS films […]

Abstract The aim of this study is investigation of AC electrical properties for (PVA-PEG- Sb2O3) composite material at different frequencies which they ranged from 100Hz -6MHz. The PVA-PEG- Sb2O3 composite prepared using solution casting method. The experimental results have shown that the dielectric constant(ɛ) and dielectric loss (δ) decreases with increasing the frequency, it also […]

Abstract Public health care in Nepal is deteriorating day by day and there is a great challenge for the government to provide better health service to the people. The massive destruction of forest and decline position of the river conditions of Nepal is the determining factor that invites the natural calamities. Nepal is rich in […]

Abstract Some 3-(N-arylcarboxamido)-N-benzylchlorides, bromides and iodides were synthesized by quaternization of N-arylnicotinamides with benzyl halides. N-Arylnicotinamides were obtained by acylation of aniline, 1- and 2-naphthylamines with chloride of nicotinic acid. The synthesized salts were employed in antimicrobial tests against both Gram- negative, Gram-positive bacteria and fungus using the microdilution method. Antimicrobial tests indicated that all […]