Browsing Faculty of Science e-Theses Collection by Title
Now showing items 65-84 of 257
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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 ... -
Effect of excess Sodium (Na) on Barium (Ba), Cobalt (Co) and Cadmium (Cd) emission during ICP-OES: Simulation on the basis of the simplified rate model
(2016-04)The effects of excess Sodium (Na) on Cobalt (Co), Cadmium (Cd) and Barium (Ba) were studied using the inductively coupled plasma-optical emission spectrometry (ICP-OES). The emission signals of the analytes with the ... -
The effect of storage time on the levels of aflatoxins in stored legumes and assessment of good agricultural practices of smallholder farmers in Shamva and Makoni districts, Zimbabwe
(2017)Legumes are an important source of food in developing countries and are highly prone to aflatoxin contamination. Significant health risks associated with aflatoxins in humans include liver cancer, teratogenicity, weakened ... -
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 ... -
Effectiveness of hermetic storage vessels in reducing aflatoxin B1 and fumonisin B1 in maize grain from Shamva and Makoni districts of Zimbabwe
(2017)Maize, the major staple food in Zimbabwe is susceptible to infection with fungi and contamination with mycotoxins. Contamination of maize with mycotoxins including aflatoxins and fumonisins is of major human health concern. ... -
The Effectiveness of the Major Environmental Management Programmes at Trojan Nickel Mine and Bindura Smelter and Refinery, Bindura.
(2012-08-16)Mining discharges toxic pollutants, fumes and dust into the environment that endanger human as well as faunal, floral and aquatic life. Some mining companies including Bindura Nickel Corporation (BNC) developed environmental ... -
Effects of different ventilation strategies on the microclimate and transpiration of a rose crop in a greenhouse
(2012-09-07)In this study, the water vapour balance method was used to evaluate the ventilation rate to calibrate and validate the ventilation sub-model of the Gembloux Dynamic Greenhouse Climate Model (GDGCM) in a naturally ventilated ... -
Effects of elephant densities on landscape heterogeneity in relation to surface water availability: A GIS and remote sensing-based approach
(2019-10)Predictions have been made on the effect of increased elephant (Loxodonta africana) densities on landscape heterogeneity change as a result of artificial waterholes in semi-arid savanna landscapes of southern Africa. ... -
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 ... -
Effects of human disturbance on the distribution of native and exotic Species: A study based on evidence from three sites in Zimbabwe
(University of Zimbabwe, 2016-10)The understanding of factors driving plant invasions in African Savannas which is pivotal for their management is currently poor. Therefore, this study tested several hypotheses that link human disturbance to species ... -
Effects of nitrogen fertilization and precipitation decline on tree-grass interactions in Southern African Savannas
(University of Zimbabwe, 2018-10)Savannas are heterogeneous ecosystems comprising of a co-dominance of herbaceous and woody species and these ecosystems support millions of people as well as diverse mammalia species. Recent research has established that ... -
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 effects of Trojan Mine waste rock dump and Madziwa tailings dump on the environment
(2014-06-26)The Mazowe Valley contains several of Zimbabwe‘s largest current and closed mining operations. It is densely populated and is also a major agricultural area. The urban and rural areas of Bindura, Goromonzi, Shamva, Marondera, ... -
Effects Of Vaccination And Treatment On HIV Transmission
(2012-08-31)This paper is an investigation of the possible effects of vaccination and treatment on the dynamics of HIV-AIDS in a varying population. The devastating global impact of HIV has increased research efforts to find an effective ... -
The Emigration Potential of Skilled Zimbabweans: Perceptions, Current Migration Patterns, Trends and Policy Responses.
(2012-08-16)The movement of skilled professionals from developing countries like Zimbabwe to industrialised countries is taking place at an alarming rate, and there is little evidence that these flows will decrease in the near ... -
Evaluating the potential impact of condoms and vaginal microbicides to reduce the spread of HIV.
(2012-08-31)Since its emergence in the 1980s,the HumanImmuno-deficiency Virus(HIV),the causative agent of Acquired Immune Deficiency Syndrome (AIDS) has claimed the lives of millions of people(20 million), and continues to exert ... -
Evaluating the relative contribution of changing farming methods to habitat loss in the mid-Zambezi Valley, Zimbabwe
(2014-06-27)Agriculture expansion is a major contributor to wildlife habitat loss in the ecological frontier areas. However, little is known about the contribution of different crops to wildlife habitat loss. In this study we evaluated ... -
Evaluation of the antimycobacterial properties of plant extracts from Vernonia adoensis.
(University of Zimbabwe, 2019-10)Tuberculosis (TB), is a mycobacterial infection resulting from Mycobacterium uberculosis. Two million individuals die annually due to TB and currently, treating this infection is a massive challenge owing to the emergence ... -
Evaluation of the role of ATP-binding cassette (ABC) transporters on chlorhexidine digluconate biocide activity in nosocomial pathogens
(2016-10)The use of biocides against bacterial infections over the years has brought numerous benefits to the health sector, but a disturbing prospect of biocide resistance to nosocomial pathogens is emergent. The evolution of ... -
An evaluation of the vulnerability of Uzumba Maramba Pfungwe (UMP) district of Zimbabwe to agrometeorological hazards and extreme events for improved farmer resilience
(2016-04)Increased climate variability due to climate change has always results in the occurrence of varied meteorological hazards world-wide. These hazards and extreme events have the potential to decimate completely a people’s ...
