Natural & Applied Sciences

Research Papers/Topics Natural & Applied Sciences

Diagenetic And Provenance Studies Of Sandstones In Parts Of Anambra And Afikpo Basins Southeastern Nigeria

ABSTRACT The study of the textural and structural properties of sandstone sediments outcropping in parts of the Anambra and Afikpo Basins formed a basis for evaluating the diagenetic properties and source areas of the Cretaceous formations (Ajali, Afikpo and Amaesiri Sandstones, Mamu and Nkporo Formations) in the area. Preliminary field studies showed that the studied sandstone sediments were friable to moderately consolidated. Detailed petrological studies in thin sections revealed early...

Soybean (Glycine Max) Processing And Performance In Fermented Maize Dough System

ABSTRACT The effect of addition of processed soybean flour on the physicochemical characteristics of fermented maize dough was studied. Soybean flours; Full-fat, Extruded, and Defatted soy-flours were processed and added to maize dough before and after fermentation of the dough. The soy were added to the dough at 0,10,and 20 percent concentrations. The dough samples were also fermented at 0,6,24 and 4 8 hours respectively. Two traditional food products; Ga kenkey and Akasa (Porridge) were al...

Antiplasmodial Activity Cytotoxicity and Phytochemical Composition of Justicia Betonica Vernonia Dumicola and Rotheca Myricoides and Their Combinations

ABSTRACT Malaria, a disease caused by Plasmodium species is currently the main cause of human sickness and death in the world, more so in the tropics. It mostly affects pregnant mothers and children below five years of age. The parasites develop resistance to antiplasmodial drugs and this has been a challenge in control and treatment of the disease through chemotherapy, something that necessitates the continuous search for alternative antiplasmodial agents. The use of plants to treat malaria ...

SSA Research 88 PAGES (18674 WORDS) Parasitology Thesis
Fabrication And Characterization Of Magnetoresponsive Carbon Nanotube-Infused Polysulfone (Cnt-Ipsf) Nanocomposites For Water Purification

ABSTRACT The search for materials for purification of polluted water is growing daily with the advent of nanoparticles. This is particularly important because many populations of people in the developing countries lack clean water due to water pollution. Water pollutants such as heavy metals and polycyclic aromatic hydrocarbons (PAHs) are known to have adverse effects on humans and environment. This work investigated the potential of synthesized magnetoresponsive CNT-polysulfone infused polym...

SSA Research 170 PAGES (34336 WORDS) Chemistry Thesis
Pneumococcal Carriage Among HIV Positive Children At The Korle-Bu Teaching Hospital

ABSTRACT Background: The pneumococcus is carried as a normal flora of the upper respiratory tract and carriage is the precursor for development of pneumococcal disease, and is also responsible for pneumococcal transmission from person-to-person. HIV positive children have about forty times greater risk of invasive pneumococcal disease compared to healthy children. In Africa, little is known about the pneumococcus in relation to people with HIV infection. Aim: The aim of the study was to inv...

Transmission Of Hepatitis B Virus Among Prison Inmates In Ghana

ABSTRACT Background: Data on the transmission of hepatitis B virus (HBV) within correctional facilities is limited in Ghana, even though the prevalence suggests intra-prison transmission. Aim: This study determined the level of transmissibility, new infections, and intraprison transmission of HBV among inmates in Ghana Methodology: Immunoglobulin M antibodies to hepatitis B core antigen (anti-HBc IgM) and Hepatitis B e antigen (HBeAg) were determined for 323 archived plasma samples obtaine...

Malaria Immunosurveillance And Evaluation Of Rapid Diagnosis Test In Meru South Sub County, Tharaka-Nithi County, Kenya

ABSTRACT Despite intensive worldwide attempt to control malaria, it remains one of the most fatal and widespread protozoan infection of mankind. About 2.4 billon people inhabit malaria prone regions which is about forty percentage of the world population. Prompt accurate, diagnosis and treatment is important to avert suffering of malaria patients. Malaria infection is a serious global challenge in the affected countries. The rapid diagnosis tests of malaria are recent diagnostic techniques wh...

SSA Research 80 PAGES (15752 WORDS) Parasitology Thesis
Green Synthesis Of Silver Nanoparticles Using Citrullus Lanatus Rind Extract As A Reductant For Selected Antibacterial Applications

ABSTRACT Silver nanoparticles (AgNPs) are the most studied metal nanoparticles due to their ever growing range of applications in areas such as chemical sensing, nanomedicine and electronics which has led to their increased demand. The AgNPs synthesis involves the use of hazardous reagents and toxic solvents. There is need to develop methods AgNPs that use environmentally benign reagents and solvents. This research work reports a green method where AgNPs were synthesized using silver nitrate...

SSA Research 89 PAGES (16417 WORDS) Chemistry Thesis
Quality Characteristics Of Palm Oils Produced From Improved Traditional, Artisanal, Medium And Large Scale Processes

ABSTRACT The quality of palm oil depends on the method of extraction. Mechanized methods of extracting palm oil result in better oil quality. In Ghana over 80% of palm oil is produced by small scale processors whose lack of mechanization results in poor oil quality. A study conducted in 2011 resulted in the development of an improved traditional process (ITP) to augment the quality of palm oil from the small scale. This study sought to compare palm oils from different processing scales to IT...

Gamma Ray Spectrometric Analysis Of Sand Samples From Selected Beaches On Coastline Of Kenya

ABSTRACT Background radiation from natural sources is the major source of external dose in our environment. The major radionuclides responsible for this are 40K, 232Th, 238U and their products of decay. Beach sands are weathering resistant residuals of geological formations which gets to the beach by erosion from mainland or deposition through waves and current action from the ocean. Waves wash back lighter grains leaving behind heavy ones which may be rich in minerals such as zircon, ilmenit...

SSA Research 82 PAGES (14916 WORDS) Physics Thesis
Assessment Of Mean Glandular Dose To Patients From Digital Mammography Systems

ABSTRACT Mean glandular dose assessment of patients undergoing digital mammography examination has been done. A total of 297 patient data was used for the study. Basic Quality Control tests were done to ascertain the performance of the equipment used. The results of Quality Control tests indicated that the three Mammography units used for this study were functioning within the internationally acceptable performance criteria. Patients with a breast thickness of 30 mm within the two age groups...

Predictive Models For Identifying Critical Units For Inspection In A Regulatory Body

ABSTRACT Routine inspections are conducted at various food establishments that yield large data sets, which capture attributes useful for data mining algorithms to predict critical violations. Critical violations related to food establishments cause serious public health problems, which may happen as result of unhygienic environment, leading to food contamination. This study presents predictive models to detect critical violations in food establishments by employing Logistic Regression (LR),...

Comparison Of Treatment Indices Between Telecobalt Machine And Linear Accelerator-Based Treatment Plans For Selected Conformal Radiotherapy Cases

ABSTRACT The use of telecobalt machine in radiotherapy is of concern in developing countries where there is a limited resource. As such, the study was to ascertain if telecobalt (cobalt60) machine could be feasible to generate and deliver treatment plans with optimal treatment indices comparable to those of a linear accelerator (Linac). Retrospective DICOM-Radiotherapy images of patients earmarked for treatment of breast, prostate and lung cancer obtained from the European Society for Radiot...

Public Transport And The Spread Of Infectious Diseases; A Case Of Greater Accra Metropolitan Area (GAMA)

ABSTRACT Many are the challenges facing Emergency Medical Service (EMS) in the developing world including Sub-Saharan Africa. These challenges include insufficient resources in terms of vehicles (the ambulance itself), limited staff and equipment, poor communication and transportation network, just to mention a few. As a result, people resort to private and public transport (Taxis) in times of emergency health situations. It is however not certain that these public and private vehicles emplo...

Incidence And Molecular Characterization Of Neonatal Human Rotavirus Strains In Accra.

ABSTRACT Specific and sensitive tests for the detection and typing of rotavirus strains are essential for a more assessment of the epidemiology of rotaviral infection in a community. In this study, 200 stool specimens obtained from October, 1999 to March, 2000 from neonates at the Babies Unit of the Korle-Bu teaching and Legon Hospitals were examined. Group A rotavirus was detected in 30% and Non-group A in 2.5% of the samples tested by either enzyme-linked immunosorbent assay (ELISA) for th...


3181 - 3195 Of 8876 Results
@