Faculty of Science ETDs: Recent submissions
Now showing items 121-140 of 257
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A cloud computing architechure for e-learning plaform, supporting multimedia content
(2014-07-25)E-learning based platforms that support multimedia content to enhance interactive learning demands large disk space. Despite research ground covered under e-learning circles, less attention has been devoted to solicit ... -
Nutritional content, phenolic compounds composition and antioxidant activities of selected indigenous vegetables of Zimbabwe
(2014-07-21)Foods of plant origin may contain many phytochemical compounds such as phenolic compounds in addition to commonly identified nutrients. Interest in phenolic compounds has greatly increased recently because these ... -
Spatial variation in vegetation and soils around artificial watering points in Hwange National Park
(2014-07-17)Piospheres are examples of the spatial impacts animals have on their environment. They tend to develop around artificial watering points, particularly in the dry season. The present study sought to assess impactof ... -
A study of the biological and economic factors affecting the kapenta (Limnothrissa miodon) population and yield in Lake Kariba
(2014-07-17)This study investigated some of the variables that influence the fishery of Limnothrissa miodon (kapenta) in Lake Kariba, namely, biological (limnological factors, zooplankton composition and densities) and economic ... -
Limnological study of Malilangwe reservoir in the South-eastern lowveld of Zimbabwe
(2014-07-17)The study provides a nine month record of the limnological investigation of the Malilangwe reservoir between February to October 2011. Malilangwe reservoir is large (211 ha), and shallow (mean depth 4.54) reservoir situated ... -
Comparison of macrobend losses in Single Mode Fibre (SMF) and Multimode Fibre (MMF)
(2014-07-17)A comparison of macrobend losses in Single Mode Fibre (SMF) and Multimode Fibre (MMF) is presented. The increased demand on information has seen optical fibres slowly replacing the use of copper coaxial cables for signal ... -
A universal electronic payment model in Zimbabwe integrating with Small and Medium Enterprises and working with mobile databases
(2014-07-17)Electronic payment systems are proliferating in banking, retail in government and everywhere money needs to be exchanged. Electronic payment systems are the everyday technology under use, they are the relevant systems ... -
Characterising Silicon Diode response for radiation measurements
(2014-07-17)X-ray radiation has been used in the treatment of cancer since its discovery in 1895. It was found that incorrect use of x-radiation can cause irreversible damage. It was necessary to introduce diode in-vivo dosimetry ... -
A cognitive principle based instructional design for conceptualization of computer concepts
(2014-07-17)The increasing development of computer technologies has made multimedia learning an important learning and instruction strategy. The multimedia design alone, however, does not necessarily result in significant positive ... -
Spatial and temporal heterogeneity of woody vegetation along park boundary and the possible causes: A case study of Umfurudzi Game Park and adjacent communal lands
(2014-07-10)Although national parks have been established across Africa to protect areas from deforestation and to conserve biodiversity, they are not immune to disturbances outside and inside their boundaries. A study on spatial ... -
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 ... -
Characterisation of the Polysaccharide material isolated from the fruit of Cordia Abyssinica
(2014-06-27)Treatment of aqueous extracts of the fruit of C. abyssinica, containing 0.25% sodium chloride with three volumes of ethanol produced an acidic polysaccharide with a 2% yield, on a fresh weight basis. With a protein content ... -
Optical, thermal and structural characteristics of carbon-in- silica selective solar absorbers coatings synthesized by Sol-Gel technique
(2014-06-27)Carbon-in-silica composite films have been fabricated using sol-gel synthesis of silica and carbon precursor materials, followed by carbonization in an inert atmosphere. Four categories of samples were fabricated and ... -
Geographic Information Systems and Remote Sensing modelling of tree species diversity in the woodlands of Zimbabwe
(2014-06-27)The continued loss of biological diversity has prompted managers and conservationists to find ways of monitoring ecosystems for the purposes of protecting and preventing further loss of biological diversity. Remote sensing ... -
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, ... -
Optimal stochastic control and risk minimisation in Insurance
(2014-06-17)The thesis examines a generalised problem of optimal control of a firm through reinsurance, dividend policy and convex risk minimisation in the presence of market friction. The major mathematical tool applied is the ... -
Expression of the cDNA Encoding the Pterocarpus angolensis (Mukwa Tree)-Seed Lectin in Escherichia coli and Site-Directed Mutagenesis of the Sugar-Binding Specificity Loop
(2014-06-16)The mannose/glucose specific lectin from Pterocarpus angolensis (mukwa tree) seeds was expressed in Escherichia coli using the pBAD expression system. The expression vector pBADMycHisA was digested with NcoI and filled-in ... -
On Groups which are Products of Weakly Totally Permutable Subgroups
(2014-04-24)This work is a contribution to the theory of products of finite groups. A group G = AB is a weakly totally permutable product of subgroups A and B if every subgroup, U of A such that U ≤ A ∩ B or A ∩ B ≤ U, permutes with ... -
Molecular Typing of Salmonella Serotypes Isolated from Wildlife, Domesticated Animal Species and Humans in Zimbabwe
(2014-04-10)Salmonella enterica serovar enteritidis (S. enteritidis) is one of the major causative agents of diarrhoea in humans and is associated with the ingestion of contaminated animal products such as meat, poultry and poultry ... -
Investigating the impact of climate variability and climate change on tick
(2013-11-22)The impact of climate variability and climate change on tickborne diseases in Chiredzi District was investigated. Ticks are responsible for several diseases (tickborne diseases) that significantly affect livestock, ...
