In this thesis, experimental measurements were carried out to determine the radiation induced effect on the electrical properties of silicon based diode type 1N4007. The gamma ray photons of Cs-137 source were used to irradiate the diode under test. The results in terms of IV characteristics were compared for post and pre irradiated diode. It is found that the forward current has increased with respect to operating voltage (0.7V) by about 42%. Furthermore, the possibility of using cemen...
ABSTRACT This study addresses the design and modification of a gasoline generator to use biogas as an alternative fuel. The biogas was produced from fresh cow dung using a 10m3 fixed dome biodigester and the produced biogas scrubbed to improve its energy content per unit volume. A 1.0 kW Tigmax air-cooled gasoline generator was used for the investigation. The modification involved the fabrication and mounting of a simple external mixing chamber on the air-duct of the carburetor. A comparativ...
ABSTRACT Schistose rocks from Okene-Lokoja area, SW Nigeria, consist of quartz-biotite schist, quartz muscovite schist, amphibole schist, and quartz schist. Major element compositions (oxide wt. %) of the schists together with their trace element contents (Ba. Ce. Cr. La. Li, Ni, Rb, Sr, V, Y, Zn, and Zr) are presented. The schists (excluding the quartzitic variety) are enriched in SiO,,K,O, Rb and Ba but depleted in total Fe, O. Mno. TiO,, MgO, Ni and Zn compared with rocks of similar compos...
ABSTRACT The azo-ligand, 1,5-dimethyl-2-phenyl-4-[(E)-(2,3,4-trihydroxylphenyl) diazenyl]- 1,2-dihydro-3H-pyrazol-3-one (H3L) and its Zn(II) and Cd(II) complexes have been synthesized and characterized based on stoichiometric, molar conductance, electronic and infra-red spectral studies. The results showed that H3L reacted with the metals in 2:1 ratio. H3L coordination was through the hydroxyl, azo and carbonyl groups to form [Zn(H2L)2] 2+ and [Cd(H2L)2] 2+ respectively. Solvent extraction s...
ABSTRACT Core-shell oxide thin films of TiO2/MnO, TiO2/CoO, TiO2/NiO and TiO2/CuO have been successfully synthesized and deposited on glass substrates, using the chemical bath deposition [CDB] technique. To ensure uniform coating, surface pre-treatment was carried out by cleaning slides with detergent, deionised water, ammonia acid and rinsed with acetones. The core of the films was synthesized from TiCl3, NaOH and PVA while the shells were synthesized from MnCl2.4H2O, CoCl2.6H2O, NiSO4 and ...
ABSTRACT Benue State Tractor Hiring Agency (BENTHA) is usually confronted with the problem of determining the optimum number of tractors to be allocated to different zones in the state. The number of tractors allocated to a zone is normally decided without any proper study of tractor needs of the zones. Sometimes allocation is based on merely political considerations. The problem of allocation is formulated and heuristic procedures are applied to optimally allocate the limited tractors.
ABSTRACT This research was carried out to assess the physico-chemical properties, storage stability and acceptability of cured grasscutter meat (Thyronomys swinderianus) products which were smoked and packaged with different plastic films (High Density Polyethylene and Polypropylene). Live grasscutter was slaughtered, dressed, cut-up and divided into three portions. One portion was treated with a solution of 5% salt; second portion was cured with a solution containing sodium nitrite, potassi...
ABSTRACT The total alkaloid, tannins contents and antiulcer activity of the extracts from four selected medicinal plants were investigated. The total alkaloids content (TAC) was evaluated according to the chloride colometric method in which atropine was used as standard. While the total tannins content (TTC) was also determined using Folin Ciocalteau assay in which gallic acid was used as a standard. The antiulcer activity of the extracts was investigated using the ethanol induced model in w...
Abstract Over the years, we have had complaints of people copying someone else’s project directly as his/her own. Therefore, this project is aimed at solving the problem of copyright as identified during seminar presentations, project defense etc in schools. To solve the above mentioned problem, this application is developed to capture relevant information of all project works undertaken and completed in the department. The application is an off-line tracking system; it will be installed o...
ABSTRACT In the Buntsandstein gas fields of the Southern North Sea, the Volpriehausen reservoir is the main producing unit. This reservoir suffers often from the in-filling of the reservoir pore spaces by solid materials (salt plugs). Determining the reservoir quality of these fields based on seismic data alone has proved to be a major exploration challenge; the presence of salt-plugs in reservoir pore spaces seems to produce seismic responses that are similar at first sight to that of gas-f...
ABSTRACT Twenty-one outcrops of igneous bodies were studied in a small area (ca. 335 sq. km) of folded sediments west of Anyim River in the Lower Benue Rift. The extrusives occur mainly as basaltic to trachybasaltic tuffs and lapilli tuffs. The minor intrusives are found as basaltic and dolerite sills composed essentially of plagioclase (An,,), augite, with or without olivine. The major intrusives are dioritic small bodies considing of sodic plagioclase (An,,), biotite andor hornblende, and ...
ABSTRACT This research work presents findings of the extent and distributions of saline zone and the hydrochemical characteristics of the groundwater of Awe, Keana and Giza areas in the Middle Benue Trough of Nigeria.Staticwater levels(swl) of hand dug wells were measured andthe results used to generate hydraulic head data and hydraulichead map. The static water levels range from 1.0m to 13.5m at Awe, 1.0m to 4.5m at Keana and 2.2m to 9.2m at Giza. The hydraulic head maps for the three areas...
ABSTRACT. This topic was informed by the fact that the current approach to office information system in our educational institutions left much to be desired. The amount of paper records being used is extremely bulky with the resultant problems of storage and retrieval. In the University of Nigeria, in the last eighteen months, four staff audits have been conducted. These audits panel revealed sordid mal-practice arising from poor and slow inter-office communication. For example, from these a...
ABSTRACT Diabetes mellitus, a metabolic disorder that affects the body’s ability to make or use insulin, has become a major public-health issue globally. This is because of the numerous health problems it causes to humans including: brain damage, heart and renal diseases, circulatory problems, and death. The onset of diabetes mellitus can be due to various causes including genetic that leads mainly to development of Type I diabetes mellitus and the lifestyle of an individual that leads to o...
ABSTRACT Malaria is a health problem and drug resistance to antimalarial poses a great challenge to its treatment and control. Having a rapid activity against malaria parasites, artemisinins are the front line antimalarials. However, already there are reports on reduced response to artemisinins. Thus it’s important to monitor resistance in malaria risky areas. Merozoite surface protein (MSP) 1 and 2 genotyping has shown difference between isolates from primary and recurrent infections ...