ABSTRACT This work evaluates the possibility of creating an online patient dose verification system through exit dose measurement on a Co-60 teletherapy machine which lacks an electronic portal imaging device (EPID). Exit dose measurements were done by diode and Barracuda and compared to those of an ionization chamber. The diode was first calibrated and the necessary correction factors (depth and field size corrections) determined using a PMMA phantom. The transmission factor of the couch was...
ABSTRACT Cabbage is an important crop for many smallholder farmers in Africa and Asia, due to its nutritional and financial benefits. It is one of the popular vegetables consumed and cultivated by both urban and rural dwellers in Ghana. The production of cabbage in Ghana, however, is faced with numerous constraints especially insect pest infestations. Farmers have limited control options and therefore resort to the use of synthetic insecticides. Indiscriminate use of these insecticides has l...
ABSTRACT Insecticide resistance due to knockdown resistance (kdr) mutations in Anopheles gambiae populations has been reported in neighbouring West African countries, such as Cote d’Ivoire, Burkina Faso and Benin despite the absence of large-scale mosquito control in these countries. The hypothesis is that agricultural or household use of insecticides is responsible for the evolution of resistance. However, studies relating such uses of insecticides and the development of resistance in An....
ABSTRACT The Black pyramid and Circle traps were evaluated with single and double combinations of gas chromatography grade of benzaldehyde (BZ) and essential oil (EO) obtained from the mango blossom to determine their performance in attracting the mango stone weevil in three commercial mango orchards located at Ayikuma, Kpong and Somanya all in Southern Ghana. Eight trap and lure treatment combinations consisting of (Pyramid trap only, Pyramid trap + BZ, Pyramid trap + EO, Pyramid trap + BZ +...
ABSTRACT Fertilizers have been implicated for being contaminated with toxic trace elements and naturally occurring radioactive materials (NORMs) even though they are an indispensible component of our agriculture. This phenomenon of contamination has been investigated and established world-wide in various forms of fertilizers (i.e., granular or “traditional” type and liquid/powder or “non-traditional type”). In Ghana, the crop sub-sector has seen a gradual rise in the importation and u...
ABSTRACT Due to increasing oil prices and climate change concerns, biodiesel has gained attention as an alternative energy source. Biodiesel derived from microalgae is a potentially renewable and carbon–neutral alternative to petroleum fuels. This study was carried out to determine the potentials of producing biodiesel from microalgae obtained from freshwater bodies in Ghana to serve as an environmentally sustainable fuel and an alternative to the use of fossil diesel. In the study, water s...
ABSTRACT The European Pressurized Water Reactor (EPR) and Hualong One Pressurized Water Reactor (HPR) are two of the reactors under consideration by the Ghana Nuclear Power Programme. Radiotoxicity analysis of Spent Nuclear Fuel (SNF) assembly was carried out with these commercial Pressurized Water Reactor (PWR) nuclear power technology as case study. Burnup depletion calculation for the Uranium Oxide (UOX) fuel of these reactor technologies was simulated. Monte Carlo Neutron Particle Extende...
ABSTRACT This study sought to determine the most effective concentration and favourable temperature at which Methanol and Diethyl ether extracts of Eucalyptus sp leaf are most effective in the control of Sitophilus zeamais in stored maize. Bioassay on efficacy of Methanol and Diethyl ether extract of Eucalyptus sp leaf was carried out with 4 treatment concentrations of 0.2%, 0.4%, 0.8% and 1.2% dissolved in acetone at 0.5 g/L of solvent. The extract was replicated three times and stored at te...
ABSTRACT The study assessed the chemical and biological characteristics of composts made from municipal solid waste in Accra and agricultural waste in Kade in Ghana. In Accra, compost samples were taken at residential level (Household composting), decentralised community level (AsieduKeteke composting facility) and at large-scale metropolis level (Teshie composting plant). The compost samples from Kade were produced at the University of Ghana Agricultural Research Station. Composting operatio...
ABSTRACT Laterites are soils that formed from the weathering of the basement complex and are rich in secondary oxides of Iron and Aluminum. It‟s red colouration is due to it‟s high iron content. Laterites are mostly found in Tropical regions which are characterized by distinct dry and wet seasons. Laterites are mainly used in the construction ofroads either as a subgrade or as a sub-base material. Geotechnical evaluation is one of the effective means of detecting and solving pre and post...
ABSTRACT Geo-electrical resistivity techniques are increasingly being applied in addressing a wide range of hydrological, environmental, and geotechnical problems. This is due to their effectiveness in near-surface characterization. Seven (7) vertical electrical soundings (VES) was integrated with 2-D geo-electrical resistivity in three locations and three traverses to characterize the near-surface and subsurface and also delineate the underlying aquifer properties in the sedimentary terrain...
ABSTRACT Electrical resistivity method involving the2-D surveying was carried out within the sedimentary complexterrain of Alapoti Ogun State South Western Nigeria with a view of estimating the geo electric layer parameters (resistivity and thickness),to identify the aquifer types and evaluate the ground water potential and over burden protective capacity over the aquifer.
ABSTRACT The need to increase the agricultural outputs is the major concern of the farmers in Ado-OdoIlaro District. Therefore there is need to determine the physico-chemical and geochemical parameters of groundwater and surface water within this sedimentary terrain in order to ascertain the quality of groundwater for agricultural purposes. Thirty-three underground water samples were collected for the determination of physical and chemical parameters. Sodium Adsorption Ratio (SAR), Soluble S...
ABSTRACT The environment is being degraded on a daily basis as a result of human activities like auto traffic, mining and agriculture among others. This has made environmental assessment studies and monitoring a matter of global attention considering our growing population Studies have also revealed that adverse health are associated with the pollution of the ecosystem by heavy metals which are easily bio accumulative but not biodegradable. This project is aimed at assessing the level of met...
ABSTRACT This study is aimed at determining the suitability of laterite soil derived from granite-gneiss from the burrow pit along Km 4 Ologuneru-Eleyele Road as a subgrade or subbase material Three samples were collected at different height from a burrow pit in the study area and were subjected to soil tests such as natural moisture content, optimum moisture content, maximum dry density, specific gravity and Atterberg limit at its dry state. Engineering tests such as California bearing rati...