June 2009
Biodegradation of vegetable oils: A review
Vegetable oils have traditionally been applied in food uses, but recent trends suggest their economic usefulness as industrial fluids. Increasing crude oil prices and emphasis on the development of renewable, environmentally friendly industrial fluids have brought vegetable oils to a place of prominence. Biodegradability provides an indication of the persistence of any particular substance in the environment and is the...
June 2009
Towards developing an improved methodology for evaluating performance and achieving success in construction projects
Success has always been the ultimate goal of every activity and a construction project is no exception. The construction industry has characteristics that sharply distinguish it from her sectors of the economy, causing the rate of failures to become very high. However, the prospect of business failure is not a topic that most businesses care acknowledges. Understanding the mechanism of failure is the key to avoid...
June 2009
Enzyme cocktail for enhancing poultry utilisation of cocoa pod husk
Cocoa Pod Husk (CPH) is a major by-product from the cocoa industry in Ghana. Using CPH as a low-cost unconventional feedstuff is hampered by its poor nutrient composition due to high level of non-starch polysaccharides including cellulose, pectin and hemicellulose, which are indigestible in monogastric livestock such as poultry. Anin vitro enzyme treatment study was conducted to test the effect of various...
June 2009
Microorganisms associated with acute otitis media diagnosed in Uyo City, Nigeria
Sixty (60) samples from both hospitalized and ambulatory patients seeking medical care in University of Uyo Teaching Hospital (UUTH) and Nedeke Peadiatric Hospital (NPH) in Uyo were screened for the microorganisms associated with otitis media between June and December, 2007. The number of occurrence of bacterial species out of the total isolates ranged from 1 and 15 with the percentage frequency between 1.49 and 22.38%....
June 2009
The relationships between the scientist perception and scientific attitudes of science teacher candidates in Turkey: A case study
Students draw from several experiences such as testing their ideas, developing searching skills and discovering the ways of seeking information that will be necessary throughout their life with the help of science. It is noted that the conceptions of students concerning science, the nature of science and the scientists have a positive or negative impact on the future profession selection and the achievement level...
June 2009
Computational performance of reference evapotranspiration in semiarid zone of Africa
Evapotranspiration is a major component of hydrologic cycle and its accurate estimation is essential for agricultural water management. The Penman-Monteith (PM) equation is the universal accurate method for estimating reference evapotranspiration (ET_ref). Its drawback is the large climatic data required which are unavailable in many African semiarid regions such as Burkina Faso. The Hargreaves (HRG) conventional method...
June 2009
Comparative studies of the crude extracts of sesame against some common pathogenic microorganisms
Concern about the rising prevalence of antibiotics resistant strains pathogenic microorganisms has been expressed in the last three decades. However, intensive studies on extracts and biologically active compounds isolated from medicinal plants have equally doubled in the last decade. The ethanolic, methanolic and aqueous extracts of Sesame radiatum and its combination with Sesame indicum leaves...
June 2009
Sero-prevalence of human immunodeficiency virus (HIV) 1 and 2 infections in Uyo metropolis, Akwa Ibom State
The seroprevalence of Human immunodeficiency virus (HIV), the causative agents of Acquired Immune Deficiency Syndromes (AIDS) was investigated from January 2008 to June 2008. Three hundred and sixteen (316) blood samples were screened presumptively for presence of HIV1 and HIV-2 using a third generation ELISA kit called “Determine”. Out of the 316 samples screened, IgM antibodies to HIV were found...
June 2009
Variations of soil liquefaction safety factors depending on several design earthquakes in the city of Yalova (Turkey)
The 1999 earthquakes (which had magnitudes Mw of 7.4 and 7.2) in Turkey caused great destruction and damage for Yalova (Turkey) sites in the Marmara Region. In the investigation area, the mainly reason for destruction is the liquefaction. As it is known, liquefaction occurs in saturated soils, that is, soils in which the space between individual particles is completely filled with water. In the frame of this research,...
June 2009
The use of Psidium guajava Linn. in treating wound, skin and soft tissue infections
The antibacterial potential of the crude leaves extracts of Psidium guajava Linn. against some bacteria associated with surgical wound, burns, skin and soft tissue infections were investigated under different conditions. Phytochemical screening of the crude leaves extracts revealed the presence of some bioactive compounds that have been associated with antimicrobial activities. Aqueous extracts was more potent...
June 2009
Clues of production for the Neolithic Çatalhöyük (central Anatolia) pottery
Probable source materials and production technologies of neolithic pottery from Çatalhöyük were studied with micromorphological and archaeometrical methods, seeking to shed light on the established techniques and appropriate source material mixtures used by the inhabitants of the epoch (7500 yr BP) in contrast to the reputed idea of primitiveness of the neolithic pottery. The results revealed the use of...
June 2009
Development of two-tier diagnostic instrument and assess students’ understanding in chemistry
The objective of this study was to develop a two-tier test about the subject of “Separation of Matter” in 9th grade chemistry curriculum and to argue the efficiency of this test on students’ achievement. First, we interviewed 21 students to develop multiple-choice items. Secondly, 24 students were asked to select the most appropriate answer to each question and then they gave explanations for...
June 2009
Use of Chrysophyllum albidum for the removal of metal ions from aqueous solution
Heavy metals released by a number of industrial processes are major pollutants in marine, ground, industrial and even treated wastewaters. Some conventional methods of treatment, generate toxic sludge, hence the study of biomaterials as adsorbents. The residual metallic ion concentrations were determined. The results obtained after contacting for 120 min showed that Chrysophyllum albidum seeds achieved...
June 2009
Flood frequency analysis of Gurara River catchment at Jere, Kaduna State, Nigeria
A flood frequency analysis (FFA) of Gurara River catchments at Jere, Kaduna State, Nigeria, was carried out. Four probability distributions were used in the study namely, Extreme value type1, Normal, Exponential and Pearson type 3 distributions due to their desirable properties. The analysis was based on seventeen (17) years daily discharge data converted from gauge height readings. Partial duration series with a...
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