Faculty of Science: Recent submissions
Now showing items 201-220 of 317
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A Human Health Risk Assessment of Heavy Metal Bioaccumulation in Nile Tilapia Oreochromis niloticus from Lake Chivero, Zimbabwe
(2013-06-04)Lake Chivero’s catchment covers the urban areas of Harare and Chitungwiza, which contribute immensely to the pollution of the lake through urban runoff, sediments, sewage effluents, industrial effluents and leachate from ... -
Effectiveness of an integrated m-health platform in disease control.
(2013-06-04)Many countries signed to the Millennium Development Goals (MDGs) which need to be achieved by 2015. These MDGs touch on health among other things and it has been noted that developing countries, including Zimbabwe, are ... -
Impact of agricultural intensification on biodiversity and secondary succession in the Mid-Zambezi Valley, Northern Zimbabwe
(2013-06-04)In this thesis, the impact of woodland clearing, cultivation intensity and fallowing on tree species diversity, physiognomy and dominance was tested in the semi-arid mid-Zambezi valley, northern Zimbabwe. This study ... -
Effects of Glutathione depletion on male fertility.(A prospective study on male Sprague Dawley rats)
(2012-09-13)The objective of this study was to investigate the role of glutathione depletion on male fertility in rats. Forty male Sprague Dawley rats were divided into two groups. Twenty rats were administered paracetamol 10mg/2mls ... -
Thermal regulatory problems associated with playing soccer
(2012-09-13)Playing soccer in a hot environment without drinking fluids is likely to cause dehydration and consequently heat stress related conditions and poor performance. The objective of this study was to determine the amount of ... -
Development of irrigation guidelines for citrus under drip irrigation in Zimbabwe
(2012-09-13)This study was carried out to develop drip irrigation guidelines for citrus in Zimbabwe. In order to achieve this, the average ETo values for the study site were derived from climatic data. The study, which was carried out ... -
Maize yield prediction using seasonal weather forecasts and a crop growth simulation model.
(2012-09-13)Maize production in marginal tropical regions is at great risk from rainfall variability. Farmers would benefit from the ability to forecast production likelihood. In this study we sought to develop a simple maize ... -
Effects of shading on leaf temperature, photosynthesis and water relations of two navel orange [Citrus sinensis (L.) Osbeck] cultivars
(2012-09-13)Between January and February 2007, diel variability in carbon dioxide (CO2) and water vapour (H2O) exchange with leaf temperature on four potted 5-year-old navel orange trees [Citrus sinensis (L.) Osbeck] on an open-air ... -
The agroclimatic potential of fuel crops in Zimbabwe
(2012-09-13)The main objective of this thesis was to assess the agro-climatic potential of fuel crops (typically sorghum) in Zimbabwe using a revised map of solar radiation received at the surface. To achieve this objective climatic ... -
A flexible plant based irrigation control for greenhouse crops
(2012-09-13)The project sought to minimize water use, improve water use efficiency and improve crop productivity for greenhouse crops. A flexible plant based automated irrigation system was designed and implemented for a tomato crop ... -
A flexible computer based irrigation control system
(2012-09-13)The project seeks to investigate the possibility of efficient water use in irrigation scheduling systems through the use of a designed flexible computer based irrigation control system. One of the specific objectives of ... -
Modelling of Greenhouse Microclimate for Rose Production in Zimbabwe.
(2012-09-13)The main objective of the project was to adapt and validate the Gembloux Dynamic Greenhouse Climate Model for the prediction and control of the microclimate of an operational greenhouse in Zimbabwe. The use of modelling ... -
Atmospheric aerosol particles and transport: a climatological perspective for Zimbabwe
(2012-09-12)Atmospheric aerosol particles were collected in the coarse (2-10 µm diameter) and fine (< 2 µm diameter) size fractions at Rukomechi research station, (16.1 °S, 29.4 °E, 500 m a.s.l.), northern Zimbabwe from September 1994 ... -
Validation of Satellite-based Rainfall Estimation over the Limpopo Basin
(2012-09-12)The main objective of this study was to validate satellite-based rainfall estimation algorithms over the Limpopo Basin. The satellite rainfall estimation was done using four algorithms which combine infrared and passive ... -
GROUND MAGNETICS AND INDUCED POLARISATION METHODS AT LORNA DOONE FARM, GLEN FOREST AREA, HARARE
(2012-09-12)A geophysical survey was carried out at Lorna Doone farm, a dairy farm located 40 km from the Harare city centre. The study area lies within the Harare – Bindura – Shamva greenstone belt. Rocks in the area include ... -
Experimental investigation and modelling of condensation of a rose crop in a greenhouse in Zimbabwe
(2012-09-12)The main aim of this study was to experimentally determine the conditions when dew forms on leaf surfaces from measured ambient conditions, and to adapt an appropriate vegetative condensation model to describe and predict ... -
The Behaviour of Particulate Matter and Carbon Dioxide Concentrations in Harare
(2012-09-12)As African countries industrialize, the emission of various pollutants is likely to increase. Air pollution can have adverse impacts on human and animal health and ecosystems. There has been very limited air pollution ... -
Climate variability and change and its potential impact on maize yield in Northeastern Zimbabwe
(2012-09-12)The main aim of this study was to investigate climate variability and change and its potential impact on maize yield in Northeastern Zimbabwe. Understanding the impact of climate change on crop production may help optimize ... -
Effect of duration of early-age thermal conditioning of broiler chickens on production and heat tolerance
(2012-09-12)The main objective of the study was to investigate the appropriate duration of early age thermal conditioning that would improve heat tolerance in broiler chickens with a minimum reduction in production performance. 200 ... -
Synthesis and Optical Characterisation of C-sio2 and C-nio Sol-gel Composite Films For Use as Selective Solar Absorbers.
(2012-09-12)Carbon-silica (C-SiO2) and carbon-nickel oxide (C-NiO) composite films were fabricated on aluminium and steel substrates by the sol-gel technique. The substrates were cleaned before spin coating took place. The precursor ...
