ABSTRACT The syntheses of benzoxazinophenothiazine was thoroughly explored. Condensation of 2,3-dichloro-1,4-naphthoquinone with 2-amino-4-nitrophenol, 4,5-diamino-6-hydroxypyrimidin-2-thiol and 2-amino-6-chlorophenol, respectively in alkaline medium yielded the intermediates: chloro-10-nitrobenzo[a]phenoxazin-5-one(136), 11-amino-6-chloro-9-thiol-8,9-diazabenzo[a]phenoxazin-5-one (148) and 6,8-dichlorobenzo[a]phenoxazin-5-one (160). Further treatment of the intermediates with 2-aminothiophe...
ABSTRACT The improvement of the combustion properties of coal and biomass by blending and carbonization was investigated. Proximate and ultimate analysis of coal, sawdust, corn cob and their blends were carried out using ASTM methods. The proximate and ultimate analyses were repeated on the five blends after carbonization at 500oC for one hour. Ten mixtures of coal-sawdust and coal-corn cob blends were made into briquettes using starch binder. The calorific values of the samples were determin...
ABSTRACT Evaluation of chemical composition of C. citratus and M. spicata, gave the following proximate composition on dry weight basis: moisture; (1.67±0.29%) and (2.67±0.29%), ash; (7.52±0.30%) and (24.4±0.35%), crude lipid; (6.67±0.28%) and (6.17±0.27%), crude fibre; (24.67±0.29%) and (2.67±0.29%), crude protein;(17.44±0.12%) and (25.32±0.13%), available carbohydrate (42.03±0.32%) and (39.78±1.11%), energy value; (297.91) and (315.93) respectively. The samples contain min...
ABSTRACT The potentials of Saw dust, Rice husk and Groundnut shells were investigated for bioethanol production. The substrates were pretreated using 2%, 4%, 6% and 8% solution of dilute H2SO4 and HCl. The pretreated substrates were thermally treated at 1050C in order to detoxify them. The pretreated substrates obtained using different concentrations of acids were fermented using Saccharomyces cerevisiae (Yeast). The results show that Rice husk treated with 4% H2SO4 (2.689%dryweight) has...
ABSTRACT Euphorbia balsamifera plant belongs to the family of Euphorbiaceae. Leaves, stems and roots of Euphorbia balsamifera were extracted using ethanol and the extracts were screened for phytochemical components. The phytochemical results indicated that the plant contained tannins, flavonoids, saponins, steroids, glycosides, terpenoids, alkaloids, and anthraquinones. Ethanol extract of leaves and its fractions were tested for antibacterial activity using agar well diffusion method an...
Abstract Characterization and analysis of Gwandu clay deposits has been conducted with a view to finding its possible industrial applications. The chemical analysis was carried out using XRF and thermal stability was determined using TGA. While the physical property tests such as firing shrinkage, porosity, cold crushing strength, bulk density, thermal shock resistance and refractoriness were done. The results of chemical analysis indicates that Dabagi clay is composed of SiO2 (64.50%), ...
Abstract Attempt was made to determine the nutritional and anti nutritional composition of Wild melon (C. ecirrhosus ) popularly known as “Gunar shanu in Hausa land, using suitable methods of analyses. The results for proximate analyses (% DW) showed a composition of 3.73 ± moisture, 2.12 ± 0.08 ash content, 26.36 ± 0.10 crude protein, 50.67 ± crude lipid, 2.17 ± 0.29 crude fibre, 18.69 ± 0.82 carbohydrate and energy value of 601.7 ± 8.75 Kcal/ 100g. Amino acids determination re...
ABSTRACT The potentials of large scale solar photovoltaic power generation in Sokoto State, North-Western Nigeria and Port Harcourt, Southern Nigeria were evaluated through the application of solar PV Sys computer software. Daily average solar radiation in both locations and average relative humidity from 2001 to 2010 was obtained from Nigerian Metrological Weather Forecast Centre, Abuja. The data together with recorded Minimum/Maximum Temperatures were applied as simulation input param...
Abstract Eighteen trace heavy metals were quantitatively analyzed using atomic absorption spectroscopy; five samples of petroleum products were collected from Kaduna Refining and Petrochemical Company. Three different preparation methods were adopted for the determination of trace and heavy metals present in the various petroleum products viz: Direct sample aspiration into the flame after solvent dilution, Total acid (wet) digestion of the sample, Ashing of the sample and dissolution wi...