ABSTRACT Numerical reservoir simulators are employed to obtain meaningful and reliable solutions for an actual case due to extreme complexity of the reservoirs systems. Wilcox formation is a reservoir in the gulf of Mexico with various development challenges, to better maximize the resources in the reservoir, simulation studies is needed to make better informed decision. For this study, a compositional simulator model is developed for comparing CO2 injection in different API oil reservoir. T...
ABSTRACT The thesis deals with the study of box girder behaviour under load and determines the deflection and membrane stresses which arise a consequence of loading
ABSTRACT Mutant huntingtin gene can bind to transcription factors, resulting in reduced levels of acetylated histones.
ABSTRACT This paper presents an electronic Expert system platform to detect and diagnose existing and new cases of contagious diseases as they occur with minimal contact with the index patient(s) and healthcare personnel with a confidence level that can be used to initiate or suggest appropriate follow-up action(s). The aim is to use ICT tools for patient-diagnosis, raise a red flag in real-time and thus contain contagious cases which may degenerate into an epidemic by providing a way to ana...
ABSTRACT This work presents a high resolution analysis of spatio-temporal variations of geomagnetic field using parallel computing. Geomagnetic field diurnal and hourly variation have been used extensively to study extant and emerging geophysical phenomena. Although, geomagnetic field variations occur even on nanosecond basis, however, to date, algorithm development and computing hardware architecture limit the resolution of monitoring solar quiet (Sq) daily variation to hourly and regional ...
ABSTRACT This thesis develops a generalized formulation, based on the electromagnetic potential theory and the thin-wire concept, of the radiation problem,
ABSTRACT Glutathione Peroxidase (GPx) family of enzymes plays important roles in the protection of organisms from oxidative damage. GPx converts reduced glutathione (GSH) to oxidized glutathione (GSSG) while reducing lipid hydroperoxides to their corresponding alcohols or free hydrogen peroxide to water. This study was conducted to investigate the possible effects of temperature in vivo on Glutathione peroxidase (GPX) oxidative activity in fish tissues.An adult fully grown cat fish, (the ...
ABSTRACT This work studied the buckling analysis of plates subject to biaxial forces using the Galerkin’s method. Twelve boundary conditions were considered. The plate deflection equations were obtained using the polynomial series, and from the plate deflection equations, the expression for the critical buckling loads of the different plate boundary conditions were obtained for different aspect ratios, ∝ using the Galerkin’s functional. The aspect ratios, considered throughout this wo...
CHAPTER ONE INTRODUCTION 1.1 BACKGROUND OF STUDY Buckling analysis of isotropic rectangular plate has been a subject of study in solid structural mechanics for more than a century. Many exact solutions for isotopic plates have been developed. Steel rectangular plates are widely used in buildings, bridges, automobiles, and ships. Rectangular plate has width size comparable to size of their lengths and so is modeled as two - dimensional plane members unlike beams and columns. Under compress...
ABSTRACT Investigations were carried out to determine the corrosion effect of sulphur-reducing bacteria on mild and medium carbon steels. Specimens were exposed to anaerobic, aerobic and distilled water environments. The corrosion rates were evaluated at intervals of seven days using weight loss and electro-chemical methods for a period of forty two days. The specimens were also subjected to visual examination and the result indicated uniform corrosion in all the environments. In all the env...
ABSTARCT Fe-Ni-Cr alloys are commonly used as pressure vessel (in-core) materials for nuclear reactors and have been classified as candidate materials for Supercritical Water-Cooled Reactors (SCWR). In service, the in-core materials are exposed to harsh environments: intense neutron irradiation, mechanical and thermal stresses, and aggressive corrosion prone environment which all contribute to the components’ deterioration. For better understanding of the mechanisms responsible for degradat...
ABSTRACT The inclusion of an additional safety rod in conjunction with a core conversion study of Ghana Research Reactor-1 (GHARR-1) was carried out using neutronics, thermal hydraulics and burnup codes. The study is based on a recommendation by Integrated Safety Assessment for Research Reactors (INSARR) mission to incorporate a safety rod to the reactor safety system as well as the need to replace the reactor fuel with LEU. Conversion from one fuel type to another requires a complete re-eval...
ABSTRACT The pebble bed type of high temperature gas cooled nuclear reactor is a promising option for next generation reactor technology and has the potential to provide high efficiency and cost effective electricity generation. The reactor unit heat transfer poses a challenge due to the complexity associated with it. In the pebble bed, heat is generated in kernels inside the fuel sphere. The generated heat is conducted to the sphere surface where it is transferred to the coolant (helium ga...
ABSTRACT This work investigated the anaerobic digestion of cow-dung and cassava peels, the effect of co-digestion in biogas production and purification process for biogas upgrade. The biogas experiments were carried out in five different anaerobic digesters which contained cow-dung and cassava peels slurry in the (wt-wt%) ratios of (100:0), (75:25), (50:50), (25:75), (0:100) and were incubated for a 30-day period at ambient temperature. Combined absorption and adsorption process was used to p...
ABSTRACT The project research entailed the production of high quality sealant incorporating a local raw material for sealing holes and gaps in various materials like metal and plastic. Two samples of acrylic sealants were produced, the first samples which is the standard formulations involved the use of silica gel as a major adhesion promoter and the second samples which is the research formulations involved the use of sand (sharp colourless sand with 59% silica/silicondioxide composition)) a...