Environmental & Physical Sciences

Environmental & Physical Sciences Research Papers/Topics

ESTIMATION OF THE DOSE RATE OF NUCLEAR FUEL OF GHANA RESEARCH REACTOR-1 (GHARR-1) .

ABSTRACT Ghana is in the process of converting its fuel from Highly Enriched Uranium (HEU) to Lowly Enriched Uranium (LEU) even though the HEU fuel is not fully spent, thus the handling of the irradiated fuel is in the offing. Irradiated fuel consists of radioactive fission and activation products generated in the nuclear fuel which are hazardous to personnel, environment and the public. As a result, the knowledge of the dose rate will aid in safe guarding the process of core conversion. Two ...

PROVENANCE OF PALEOPROTEROZOIC BIRIMIAN METASEDIMENTARY ROCKS IN PARTS OF THE WA-LAWRA BELT, NORTHWESTERN GHANA

ABSTRACT Shales from the Paleoproterozoic Birimian Supergroup in parts of the WaLawra Belt, Northwestern Ghana, were analyzed for their major and trace element contents using ICP-MS and ICP-AES with the main aim of establishing the geochemical characteristics of the shales and inferring their provenance. On the whole twenty-two (22) samples of the shale was collected for analysis. The studied shales were compared to Early Proterozoic crust (EPC) and Post Archean Australian Shales (PAAS), and ...

EFFECTS OF ARTHROPOD ECTOPARASITE INFESTATIONS ON LIVESTOCK PRODUCTIVITY IN THREE DISTRICTS IN SOUTHERN GHANA

ABSTRACT Livestock are vital to subsistence and economic development, providing food, income, employment, manure and savings for Sub-Saharan African farmers. Diseases and arthropod ectoparasite infestations often impact negatively on livestock production and productivity. This study assessed the effects of arthropod ectoparasite infestations on the productivity of three ruminant (cattle, sheep and goats) livestock species in three Districts of Southern Ghana around the Volta River. A total of...

ESTIMATION OF THE DOSE RATE OF NUCLEAR FUEL OF GHANA RESEARCH REACTOR-1 (GHARR-1)

ABSTRACT Ghana is in the process of converting its fuel from Highly Enriched Uranium (HEU) to Lowly Enriched Uranium (LEU) even though the HEU fuel is not fully spent, thus the handling of the irradiated fuel is in the offing. Irradiated fuel consists of radioactive fission and activation products generated in the nuclear fuel which are hazardous to personnel, environment and the public. As a result, the knowledge of the dose rate will aid in safe guarding the process of core conversion. Two ...

STUDY OF THE ORIGIN OF SALINITY IN THE UNSATURATED SOIL ZONE USING CHLORIDE PROFILES AND STABLE ISOTOPE AT EKUMFI AKWAKROM AND EKUMFI ASOKWA MANKESSIM MUNICIPALITY OF THE CENTRAL REGION OF GH

ABSTRACT This research was carried out to investigate the origin of salinity in the unsaturated soil zone with emphasis on chloride profile and stale isotopes in the Ekumfi Akwakrom and Ekumfi Asokwa in Mankessim Municipality of the Central Region of Ghana, which has been reported to have high saline groundwaters. A total of 159 samples were analysed, which comprises: fifty – six (56) rainwater samples, fifty – three (53) soil from the unsaturated zone, two (2) groundwaters, forty – two...

SUIT ABILITY ANALYSIS FOR SOLID WASTE LANDFILL IN A GEOSPATIAL TECHNOLOGICAL ENVIRONMENT FOR IBADAN METROPOLIS, OYO STATE, NIGERIA

Municipal solid waste landfill is an important part of the urban infrastructure that ensures the protection of environment and human health. Landfill selection problem for municipal solid waste involves many factors, criteria and regulations. The aim of this study is to access suitable site for an engineered solid waste landfill, ·with specific objectives of site determination based on UNEP criteria and carrying out both geophysical and geotechnical evaluation of the site. The study are...

DEVELOPMENT OF PERSONNEL RADIATION MONITORING PROGRAM FOR OCCUPATIONALLY EXPOSED WORKERS IN MALAWIAN HOSPITALS: A CASE STUDY OF KAMUZU CENTRAL, BWAILA, AND MTENGO WA NTHENGA HOSPITALS

ABSTRACT Malawi became an IAEA member state in 2006 and developed the Atomic Energy Act and Regulations in 2011 and 2012 respectively. However, regulatory authority and personnel monitoring services have not yet been established. As such, hospitals operating radiological services in Malawi do not have personnel monitoring programme. This study aimed at developing the personnel radiation monitoring program for three hospitals in Malawi namely; Kamuzu Central Hospital, Bwaila Hospital, and Mten...

PRODUCTIVITY AND WATER USE BY RAIN-FED EARLY MATURING CASSAVA (Manihot esculenta Crantz) VARIETIES GROWN AT DIFFERENT PLANT DENSITIES IN A COASTAL SAVANNAH ENVIRONMENT

ABSTRACT The production of cassava (Manihot esculenta Crantz) under rain-fed conditions at the Kwabenya-Atomic area in the coastal savannah environment is constrained by low and erratic rainfall events. Improving cassava production in the area requires the use of cassava varieties which are efficient in the use of limited soil moisture. The objective of the study was to evaluate the response of two early maturing cassava varieties to three (3) planting densities to TDM, RY, and WUE. The actua...

EFFECT OF DIFFERENT PESTICIDE MANAGEMENT OPTIONS ON THE POPULATION DYNAMICS OF APHIDS AND THEIR NATURAL ENEMIES ON CABBAGE

ABSTRACT Cabbage is a popular vegetable grown in Ghana and serves as an important source of livelihood for small-scale farmers, especially in urban areas. However, its cultivation encounters several constraints such as attack by insect pests. A key insect pest is aphid that cause significant to the crops as they serve as vectors of plant diseases. Farmers thus resort to indiscriminate use of insecticides to reduce the damage caused by insect pests. However, insecticides are associated with ad...

ASSESSMENT OF DESIGN AND SHIELDING IN SOME SELECTED CONVENTIONAL X-RAY AND COMPUTED TOMOGRAPHY (CT) FACILITIES IN BURKINA FASO .

ABSTRACT The main objective of this work is to assess the integrity of structural shielding to validate the protection of the staff and the public for two selected general radiography and CT facilities. The assessment for general radiography was based on 729 examinations for facility A and 706 examinations for facility B. For computed tomography (CT) rooms, a total of 293 body and 190 head procedures were used for facility A, and 195 body and 160 head procedures for facility B. For general ra...

SPECIES DIVERSITY OF BEDBUGS AND ENVIRONMENTAL FACTORS INFLUENCING THEIR SURVIVAL

ABSTRACT Bedbugs are blood-sucking insects of the order Hemiptera and family Cimicidae that derive nutrition from vertebrates, including humans, their feeding is allied to the transmitting several fungal, bacterial and viral infections. A rise in international travels and emergence of insecticide resistant bedbugs within the past decade has led to renewed interest in studying these insects. Anecdotally, bedbugs exist in homes, boarding houses, hotels and other human dwellings in Ghana but hav...

KNOWLEDGE GAPS, TRAINING NEEDS AND BIO-ECOLOGICAL STUDIES ON FRUIT-INFESTING FLIES (DIPTERA: TEPHRITIDAE) IN NORTHERN GHANA

ABSTRACT Tephritid fruit flies are a major threat to the horticultural industry in sub-Saharan Africa owing to the heavy losses they cause to fruit and vegetable crops, and the resultant quarantine restrictions. Addressing the fruit fly menace in Ghana requires effective stakeholder training along the fruit value chain, coupled with adequate research information on management strategies. Baseline studies were conducted in northern Ghana to determine the priority management training needs of f...

Multi-Analytical Approach for Profiling Some Essential Medical Drugs

ABSTRACT Counterfeit and substandard pharmaceutical drugs are chiefly rampant in developing countries due to inadequate analytical facilities and lack of regulatory oversight. The production of counterfeit or substandard drugs is broadly problematic. Underestimating it therefore leads to morbidity, mortality, drug resistance, introduction of toxic substances into the body and loss of confidence in health care systems. Medical drugs that are often counterfeited range from antimalarial drugs to...

GENETIC DIVERSITY STUDIES IN TWENTY ACCESSIONS OF HOT PEPPER (Capsicum spp L.) IN GHANA.

ABSTRACT Twenty (20) accessions of hot pepper (Capsicum spp L.) were collected from eight geographical regions of Ghana for genetic diversity studies. The objective was to assess genetic relationship among them using phenotypic and molecular traits and to evaluate their elemental composition. A replicated field experiment was conducted to assess their genetic diversity based on 13 quantative traits and 22 qualitative traits using the IBPGR descriptor list for Capsicum. Confirmation of their i...

THERMAL HYDRAULIC AND SAFETY ANALYSIS OF HEAT TRANSFER AND DISTRIBUTION IN THE GHANA RESEARCH REACTOR-1 (GHARR-1) CORE USING STAR-CCM+ CFD CODE

ABSTRACT Operational power of a nuclear reactor core is limited by thermal considerations. In principle, the allowable core power is restricted by the rate at which the heat can be transferred from the fuel to the coolant. Unlike in conventional combustion facilities where the heat is released in gas-flows, heat in the nuclear reactor core is mainly released in the structural material. If not properly removed the structural materials inevitably melt causing release of radioactive material. ST...


1771 - 1785 Of 2128 Results