ANALYSIS  OF SMALL SCALE EXPERIMENT ON STUDENTS’ ACHIEVEMENT AND RETENTION IN CHEMISTRY

ANALYSIS  OF SMALL SCALE EXPERIMENT (SSE) ON STUDENTS’ ACHIEVEMENT AND RETENTION IN CHEMISTRY ABSTRACT This study was carried out to determine the examination of small scale experiment in fostering students’ achievement and retention in practical chemistry with reference to ability levels. Six research questions and six null hypotheses guided the study. A sample of hundred […]

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PHYTOCHEMICAL AND ANTIMICROBIAL STUDIES OF THE METHANOL EXTRACT OF THE ROOT OF NAPOLEONAEA HEUDELOTTI (A.JUSS)

ABSTRACT   The extracts of the root part of Napoleonaea heudelotii were subjected to phytochemical and anti-microbial studies. Extraction was done by continuous Soxhlet extraction using methanol. The phytochemical screening of the crude methanol extract, chloroform and ethyl acetate fractions revealed the presence of carbohydrate, cardiac glycosides, saponins, steroids, triterpenes, flavanoids and tannins. The result […]

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PHYTOCHEMICAL AND ANTIMICROBIAL SCREENINGOF THE STEM BARK EXTRACT(S) OFINDIGOFERA ARRECTAHOCHST EX A. RICH(FABACEAE

ABSTRACT The Pulverized stem bark of Indigofera arrectawas exhaustively extracted with methanol and concentrated in vacuo using rotary evaporator at 40 0C.The extract was later subjected to solvent partitioning to yield soluble extracts of n-hexane, ethyl acetate, chloroform, and methanol. Genernal phytochemical screening of the fractions revealed the presence of secondary metabolites such as cardiac […]

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OPTIMIZATION OF BIODIESEL PRODUCTION FROM YELLOW OLEANDER AND CASTOR OILS AND STUDIES OF THEIR FUEL PROPERTIES

Abstract   The optimization of biodiesel production from two non-edible oils and studies of their fuel and biodegradability properties was carried out. The two oil feedstocks (Yellow oleander and Castor oils) were extracted from their seeds using an oil expeller and their physicochemical properties such as iodine value, moisture content, saponification value, acid value, viscosity, […]

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STUDIES ON THE IMPACT RESISTANCE OF CASHEW NUTSHELL POWDER AND CALCIUM CARBONATE FILLED POLYPROPYLENE

ABSTRACT Mechanical and morphological properties of pure polypropylene (PP) polypropylene/calcium carbonate (PP/CaCO3) and polypropylene/cashew nutshell powder (PP/CNSP)are reported in this work. The composites were prepared by compression moulding technique. The compressed moulded articles that is the PP, (PP/CaCO3) and (PP/CNSP) of different compositions (10/90, 20/80, 30/70, 40/60, 50/50, 60/40, 70/30, 80/20) were characterised for mechanical […]

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ISOLATION AND CHARACTERIZATION OF BIOACTIVE COMPOUNDS FROM STEM BARK EXTRACT OF Uapaca pilosa Hutch

ABSTRACT Uapaca pilosa(Hutch.) a plant used in some parts of Africa in the treatment of dysentery, menstrual pain, fever, constipation, erectile dysfunction, skin infections, female sterility, pile, rheumatism, emetic, tooth-troubles and fatigue. The dried plant was extracted, the extract was subjected tophytochemical investigation using standard method revealed the presence of alkaloids, flavonoids, anthraquinones, tannins, saponins, […]

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EVALUATION OF SOME HEAVY METALS CONCENTRATIONS IN CHOCOLATE, CANDIES AND TOMATO PUREE IMPORTED FROM CHINA

ABSTRACT   This study was initiated as a follow-up information on some impounded products tomato puree (Samples A and B) chocolates and candies (Samples C, D, E and F) imported from China, and sold in Nigerian markets. This result as their failure to meet National Agency for food drug administration and control (NAFDAC) regulatory standard. […]

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EVALUATION OF SOME CHEMICAL CONSTITUENTS OF SELECTED ENERGY DRINKS

Abstract This research work examined and compares the physicochemical properties and some chemical constituents of selected energy drinks. Fourteen (14) brands of energy drinks samples consisting eleven (11) liquid and three (3) powdered forms were randomly purchased. All samples were analyzed for their physicochemical properties (pH, turbidity, conductivity and total dissolved solids), trace and heavy […]

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EFFECT OF ACRYLIC POLYMER DISPERSIONS ON WATER VAPOUR PERMEABILITY AND SOME OTHER PHYSICAL PROPERTIES OF FINISHED LEATHERS

Abstract The effect of acrylic polymer dispersions on the water vapour permeability and some other properties of finished leathers have been studied. An acrylic based commercial binder AE 558 Nycil has been characterized and its effect when applied in a finish formulation on some of the physical properties of originally retanned leathers was investigated. The […]

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ASSESSMENT OF EUTROPHICATION LEVEL OF MUNICIPAL SURFACE WATER, ABUJA NIGERIA

ABSTRACT The level of some nutrient elements in Abuja surface water were investigated for six months to determine the eutrophication profile and make logical inference on the fate of surface water system in the nearest future. Samplings were done monthly for a period of six months covering October to March and standard methods were used […]

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