Abstract Representative samples of coal from Okaba, Kogi State, Enugu, Enugu State, Garin Maiganga, Plateau State, and Gindi Akwati, Gombe State were collected and analyzed for possible radioactivity using Sodium Iodide Detector (NaI). The results shows that coal samples from Okaba coal, Kogi State has 70.622Bq/kg of K-40, 34.183Bq/kg of Ra-226 and 18.826Bq/kg of Th-232; […]
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Chemical and Thermal Modification of Okaba Coal for Increased Surface and Adsorption Properties
Abstract Activated carbon produced from Okaba coal was modified using potassium hydroxide and phosphoric acid. The effect of this chemical modification was studied using carbon tetrachloride adsorption. Characterization of the activated carbons using scanning electron microscopy and FTIR analysis showed a greater development of porosity obtained by the modified activated carbons and the FTIR spectra […]
Physico-chemical and Fatty Acid Composition of Oil Extracted by Acetone Solvent from Alligator Pepper (Aframomum Melegueta)
Abstract To achieve a suitable concentration of the active ingredients contained in the plant or seed samples and that their action can be more effective, it is necessary to perform several procedures through which the active ingredients are extracted with the appropriate solvents, These are selected according to the solubility and stability of the beneficial […]
Toxicological Assessment of Scratch-off Foils from Prepaid Cards in Male Wistar Rat
Abstract Evaluation of toxic effects of the scratch-off foil on pre-paid cards are important because of the fingernails scratching of the card’s surface which lead to constant exposure to same by end users and retailers. Animals (n=18) were exposed to 10, 20 and 50 mg/kg body weight (b.w) foils from the cards three times a […]
Phytochemical and Antibacterial Screening of the Leaf Extracts of Bombax buonopozense
Abstract Fresh powdered leaves (200 g) of Bombax buonopozense was percolated with 95 % ethanol (1000 cm3) for one week. It was decanted, filtered and evaporated on rota vapor (R110) at 40oC to obtained the crude ethanol extract (F1). It was macerated sequentially with chloroform, ethyl acetate, acetone and water to obtained the chloroform soluble […]
Investigation of grinding-aid effect on the fineness, particle size distribution, surface area and color properties of calcite powder in dry vertical stirred mill
Abstract In this study, the effect of some chemical additives such as methanol, ethanol, sodium oleat and chloroform on the dry ultrafine grinding of calcite powder (X50= 33 µm, Sv=0.95 m2/cm3) was investigated by using a stirred mill. The experiments were carried out by a batch operation, and the change in average particle size (X50), […]
Kinetics of the adsorption of heavy metals by clay in the activated state
Abstract Presence of heavy metals in the aquatic systems has become a serious problem. As a result, there has been a great deal of attention given to new technologies for removal of heavy metal from contaminated waters. Biosorption is one such emerging technology which utilized naturally occurring waste materials to sequester heavy metals from industrial […]
Influence of drought stress on molecular responses on crop plants
Abstract The crop growth and development are constantly influenced by environmental conditions such as stresses which are the most important yield reducing factors in the world. Drought stress is considered as one of the crop performance limiting factors and a threat for successful crop production. Drought tolerance is important trait related to yield. A better […]
Effect of drought stress on cell membrane stability, relative water content and some characteristics of crop pants
Abstract Growth is accomplished through cell division, cell enlargement and differentiation, and involves genetic, physiological, ecological and morphological events and their complex interactions. The quality and quantity of plant growth depend on these events, which are affected by water deficit. Cell growth is one of the most drought-sensitive physiological processes due to the reduction in […]
Jatropha tanjorensis Leaf Extract as an Environmentally – Friendly Mild Steel Corrosion Inhibitor in H2SO4 Solution
Abstract The inhibition of the corrosion of mild steel in 1 M H2SO4 solution by Jatropha tanjorensis leaf extract (JTLE) has been studied using weight loss and hydrogen evolution techniques. The results obtained reveal that JTLE effectively inhibited the corrosion of mild steel in H2SO4 solution. The highest inhibition efficiency of 89.73% occurred at 5.0 […]