In this research work, we have reviewed and studied two disease models: a disease model with logistic recruitment rate with and without incubation period and a disease model with linear recruitment rate with and without incubation period. The existence and stability or otherwise of the equilibrium states of the models were studied; also numerical experiments were conducted using a written computer program in MATLAB function ode45; for which table of parameter values were generated using sec...
Abstract One major environmental hazard causing serious social problem in oil producing communities in Niger Delta is oil spills. This is as a result of the numerous petroleum related installations. T he the aquifer via pathways along which contaminants flow from the surface to th deterioration of water quality in shallow and vulnerable aquife rs spills contaminate e aquifer causing . Electrical resistivity investigation of the SombreiroWarri Deltaic Plain deposits of the Niger Delta was carr...
TABLES OF CONTENT TITLE PAGE i CERTIFICATION ii DEDICATION iii ACKNOWLEDGEMENT IV TABLES OF CONTENT V ABSTRACT VI CHAPTER ONE 1.0 INTRODUCTION 1.1 LITERATURE REVIEW 1.2 THE LIVER 1.2.1 CARBON TETRACHLORIDE 1.3.0 LIVER FUNCTION TEST 1.3.1 TOTAL CHOLESTEROL 1.3.6 FUNCTIONS OF THE LIVER 1.6.0 LIPID PEROXIDATION 1.8.2 BOTANICAL DESCRIPTION OF DENNETIA TRIPETALA 1.8.3 COMMERCIAL / ECONOMIC IMPORTANCE OF DENNETTIA TRIPETALA 1.8.4 PHYTOCHEMICAL CONSTITUENTS OF DENNETTIA TRIPETALA 1.8.4.1 P...
ABSTRACT Ditch cutting samples collected from interval 2590 3300 metres in Well K-27, Greater Ughelli depobelt, Niger Delta were studied for their lithology and foraminiferal content with the aim of dating and subdivision of the sequences penetrated by the well into biozones. The samples were processed using standard foraminiferal processing methods involving sample disaggregation and washing through a 63 micron mesh sieve, drying and picking and subsequent analysis of the foraminifera and a...
SEQUENCE STRATIGRAPHIC IMPLICATION TO HYDROCARBON EXPLORATION IN “BETA FIELD”, NORTHERN DEPOBELT OF THE NIGER DELTA BASIN 1,2Ukpong, A. J. and 2Anyanwu, T. C. 1. Department of Geology, Gombe State University, Gombe, Nigeria (Sabbatical), 2. Department of Geology, University of Calabar, Calabar, Nigeria ABSTRACT Seismic and checkshot data, geophysical data and biostratigraphic data extracted from ditch cutting samples, were used for the sequence stratigraphic analysis of Beta-24 we...
ABSTRACT Bio-fuels are prominent in current discussions both as a solution to problems and as a creator of problems. They have promise as a substitute for fossil fuels, particularly petroleum as the raw material for transportation fuel. But bio-fuels also have pitfalls, especially when produced at a scale sufficient to replace a significant proportion of the world's use of petroleum. This controversial topic has attracted great political, economic and social attention because of its touching...
Aim: This study was carried out to isolate and identify the microbial pathogens of medical importance on the external body surfaces of Periplaneta americana collected from toilet areas, residential/hostel areas and health facilities in Umuahia metropolis, Abia State, south-eastern Nigeria. Study Design: Cross sectional study. Place and Duration of Study: The study was carried out in Umuahia ...
Health related quality of life is one of the growing subjects used for evaluating health conditions among patients who suffer from specific ailment.It has been assumed that identification of the variables is able to mirror the one's general health conditions.However,formulating the extent of contribution is multiple variable towards overall health conditions is not straight forward as the arbitrary nature of HRQL variables.This paper aims to model the relationship between HRQL variables using...
Abstract: Aim: isolation, purification and NMR characterization of secondary metabolites in Mimosa pudica. Study design: extraction, isolation and identification of the secondary metabolties from the petroleum ether and metabolites extracts from Mimosa pudica. Methodology: In the course of our study on Mimosa pudica, a compound was isolated and purified using different chromatographic techniques and the structure of the compound determined on the basis of their spectroscopic data (IR, H...
ABSTRACT In this study, the whole plant of Mimosa pudica was extracted using absolute ethanol. The crude ethanolic extract and its isolated triterpenoid glycoside were tested for antifungal activity towards Aspergillus flavus and Trichophyton rubrum using Well Diffusion Method. At concentrations of 25 –100 mg/mL, the extract possesses antifungal activity (from being partially active to very active) against Aspergillus flavus and Trichophyton rubrum. The TLC profile of the crude extract...
Abstract: The side effects and the increasing microbial resistance to synthetic drugs in the management and treatment of infections remain an issue in modern medicine, hence the increasing research in phytomedicine. Therefore in the present study, the active phytocomponents of Mimosa pudica’s wholesome parts were revealed using quantitative phytochemical analysis. The antibacterial activity of the Ethanolic extract was studied using Well diffusion method. The activity was tested aga...
Textile dye effluents are released into the environment without any pretreatment and pollute water, to prevent contamination of our valuable resources; removal of these pollutants is of great vitality. For this purpose, waste water samples were collected from dye contaminated sites of Kofar Mata dye pits based in Kano State. Certain parameters which include temperature and pH were determined in the Laboratory. The residual bacterial load was found to be in the range of 1.4 x106 - 4.0x106 cfu....
Abstract Schlumberger array is the most commonly used among other arrays for Vertical Electrical Sounding (VES) and it requires large spacing at both ends for deeper subsurface information. The problem of limited space for spreading in built up areas could lead to incomplete information from deeper depth. The Geolectrical survey involving electrical resistivity methods has been carried out at Birnin Kebbi and Fakai Local Government Area in Northern Nigeria with the view to delineate ...
Great attention has been paid to food and water quality for centuries. The requirements have been changed according to the development of human knowledge in the field of nutrition, chemistry, microbiology, and analysis. It is necessary first to point out that the term food and water quality is a complex one that includes many indicators. For food and water to be classified as good, it has to fulfill the requirements, especially from the nutritional, sensory, hygienic-toxicological, and techn...
The main aim of this research was to characterize the enterobacterial uropathogens with respect to drug resistance in Awka, south-eastern Nigeria. The following enterobacterial uropathogens isolated from patients attending Chukwuemeka Odumegwu Ojukwu University Teaching Hospital, Awka were studied: E.coli (58), Salmonella spp. (15), K. pneumoniae (14), Citrobacter freundii (10) and Enterobacter aerogenes(3). Their antibiotic susceptibility patterns against major classes of antibiotics were e...