For a human being to be formed there must surely be a man and a woman. The man will produce sperm and the woman will produce eggs.
The present work reports a theoretical study on vibrational spectra and nonlinear optical properties of azobenzene derivatives. The theoretical geometrical parameters in the ground state have been investigated by density functional method using B3LYP functional and 6-311G++ (d, p) basis set. The analysis of calculated IR and VCD indicates that the binaphthyl and alkoxy side chain of azobenzenes derivatives contribute differently to spectral line shape. The out-of-phase bending and twisting of...
Several physiochemical, structural and quantum-mechanics based descriptors were derived for a set of anilide derivatives, using DFT-B3LYP/6-311G (d, p) level of theory. The aim of this study was to develop QSAR model using multiple linear regression to predict the antimicrobial activity of anilides towards E. Coli in terms of several electronic and molecular descriptors. The best-fit model involved electrophilicity index (w) in conjunction with molecular weight (W) and logarithm of the octano...
ABSTRACT The study examined the impact of prior exposure to Laboratory apparatus on acquisition of science process skills, academic achievement and retention in chemistry among secondary school students in Giwa Educational Zone. A total of 120 Senior Secondary two (SS II) chemistry students were in the study from a total population of 996. Non randomized pretest, post posttest, posttest experimental - control groups research design was used for the study. Chemistry Achievement Test (CAT) and...
Abstract Single stage alkali-catalyzed transesterification of vegetable oils having free fatty acid(FFA) content above 0.5% promotes saponification which lowers the biodiesel yield bydeactivating the catalyst. A strong solid base KF/Eggshell catalyst, which is capable ofcircumventing saponification while producing biodiesel in a single stage from neem oilhaving FFA content of 4.2% was synthesized. The catalyst was synthesized by a thermaltreatment of chicken eggshell at 900oC, followed by ...
Abstract Food drying is one of the methods for preserving perishable foods for long periods of time. The nutritional composition of tomato (Lycopersicum esculentus) and okra (Abelmoschus esculentum) was investigated using the commonly available drying methods (sun, oven, and solar drying). The nutritional compositions of these food crops were determined after they have been dried using various drying methods and milled to pass through mesh size. The moisture content of these food samples wa...
Abstract Garden egg is a plant with edible fruit and its potential as a medicinal fruit have also been investigated. Extract has been suggested to have effects that could be therapeutic and nutritional. Analyses were carried out to determine the proximate and phytochemical constituents of both processed and raw indigenous Africa eggplant (Solanum macrocarpon and solanum aethiopicum). Proximate analysis of process and raw solanum macrocarpon (WBA) per (100%) showed: 75.13% moisture, 3.50% ...
Abstract People usually think food processing bring about reduction in food nutrients as well as the quantity because few quantities must have been lost or wasted during processing, many said food processing affect the taste and color of the food when compared to its whole form. Meanwhile, food processing which also includes its preparation makes food last longer than when in its whole form (increases its shelf life), although its positive effects are numerous but its negative effects canno...
Abstract In the present work fifty six a new α, β - unsaturated carbonyl compounds and their cyclization reactions with varieties reagent (hydrazine derivatives, hydroxylamine and thio urea) pyrazole, isoxazole and thiopyrimidine derivatives were prepared. A process of the preparation of α, β – unsaturated carbonyl compounds by coupling to diazotized a p-aminoacetophenone with 1.3 di carbonyl compounds (ethyl acetoacetate, acetyl acetone, bezoylacetone and dimedone) in presence sodium...
ABSTRACT In this study, a series of N-pyridin-3-yl substituted [phenylsulphonamido] acetamide has been synthesized. The reaction of phenylsulphonyl chloride with various amino acids in basic medium yielded phenylsulphonamido alkanoic acid which, on chlorination with thionyl chloride, gave acid chloride derivatives of phenylsulphonamido alkanoic acid in situ. The acid chloride derivatives on condensation with 3-aminopyridine gave corresponding acetamide in good to excellent yield. The compoun...
ABSTRACT Management of hyperglycemia is an essential strategy in control of diabetes mellitus which remains a major health problem despite several therapeutic interventions particularly inhibitors of a-amylase. Use of ethnobotanical options has prominently been reported, for instance, Lannea schweinfurthii reported for management of hyperglycemia, although there is no scientific information to validate its anti-hyperglycemic potential. The study was to determine structures of compounds from L...
Abstract Introduction: Lead is an oxidation reduction inactive metal however it interacts with a group of essential elements such as copper, zinc, selenium and chrome and iron. Accordingly current study aims to evaluate the effect of occupational Lead exposure on zinc and chromium level among factory workers. Materials and Methods: A cross-sectional study included 41 Lead exposure workers and 40 non exposure subjects as control group. Serum chromium and zinc were measured using Atomic Absorp...
Drinking water quality was investigated at Daranna community the mineral rich part of Kaoje town in Kebbi state, to ensure the continuous supply of clean and safe drinking water for the public health protection. In this regard, a physical and chemical analysis of drinking water samples was carried out for samples collected at different locations within the community areas. A number of parameters such as colour, temperature, pH, electric conductivity, dissolved oxygen, total hardness, COD, ...
ABSTRACT This study aimed at investigating the seasonal variation in the levels of contamination in soils, food crops, and domestic spring water samples from Wakaliga dumpsite in Kampala. Potentially Toxic Elements (PTE) and physicochemical properties were analysed during the dry season (May-July 2017) and the wet season (September-November 2017) and the results compared to standard limits set by international and local agencies. The results obtained indicated that some of the elements were ...
ABSTRACT The present study is aimed at assessing the concentrations of heavy metals in food crops from pece wet land Gulu town ship. The study investigated heavy metals which include Copper, Zinc, Lead, and Cadmium in the soil and in selected crops which were banana fruit, sugar cane, coco yam and green vegetables (Amaranthus dubius). Metals are essential for maintaining human health throughout life however, at high concentrations they become poisonous. In Gulu town ship, waste disposal and ...