Browsing Faculty of Science e-Theses Collection by Title
Now showing items 28-47 of 257
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Challenges for TFRC as a Real-Time Protocol Over Multihop Wireless Ad Hoc Networks
(2012-08-29)Multihop wireless networks are emerging as a natural extension of the global Internet for scenarios where wired connections are unfeasible, impossible, or undesired. In these networks,nodes cooperate among themselves by ... -
Characterisation of Cowpea aphid-borne mosaic virus (CABMV) and evaluation of pathogen derived resistance to the virus.
(2012-08-28)Cowpea is a major source of dietary protein in most African traditional diets, and the crop partially replenishes the soil nitrogen content as a result of its association with nitrogen-fixing Rhizobium spp, and is used as ... -
Characterisation of oil extracted from parinari curatellifolia (hacha) nuts
(2016-04)Several oils have been characterised by many researchers as a way of unravelling their usefulness. Chinweubwa Arinze Jude, 2013 extracted oil from ground Nicotiana tabacum seeds by soxhlet.The percentage oil content was ... -
Characterisation of signalling cascade by HBV genotypes in Hepatocellular Carcinoma progression
(2018)Background Hepatitis B virus (HBV) genotypes have different clinical outcomes in the progression of hepatocellular carcinoma. The HBV encodes two regulatory proteins, the LHBs and the HBx. Methods We analysed the impact ... -
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 ... -
CHARACTERISATION OF THE POLYSACCHARIDE MATERIAL ISOLATED FROM THE FRUIT OF CORDIA ABYSSINICA
(2012-07-11)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 ... -
Characterisation pollen allergens in Zimbabwe of grass.
(University of Zimbabwe, 2018)IgE mediated hypersensitivity affects more than 25% of the industrialized countries. The first wave was that of inhalant allergies and this has been recorded as a series of ISAAC studies. The second wave is emerging and ... -
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 ... -
Characterization of Anopheles gambiae (Giles) Breeding Sites in Gokwe South, Zimbabwe
(2012-08-29)Anopheles gambiae Giles larval breeding habitats were characterized in Gokwe South district in Zimbabwe to determine the ecological parameters of Anopheles breeding sites and identify their associations with larval density. ... -
Characterization of the black and white waters of the Manjolo Springs.
(University of Zimbabwe, 2019-10)The Manjolo springs are found in Binga in the Matebeleland North Province of Zimbabwe. The springs are twin springs separated by a 15 meter distance. One spring has black coloured water while the other has white coloured ... -
Chemistry of Phorbol Ester Toxicity: A Computer Modelling Approach
(2020)Phorbol esters are phytochemicals found in the Euphorbiaceae family, as the prime factors of toxicity in those plants. However, their degrees of toxicity vary from one compound to another, despite having closely similar ... -
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 ... -
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 ... -
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 ... -
Collaborative Learning in an ICT Text Based Synchronous and Asynchronous Learning Communities. What Impact Does it Have on Learning Outcomes?
(2012-08-29)This dissertation analyses collaborative learning in synchronous and asynchronous learning communities and come up with the best suitable e-learning community for the Zimbabwean distance students. It focuses on the University ... -
Comparison of cytokine and immunoglobulin levels in blood between asymptomatic serum sryptococcal antigen positive and negative HIV-positive individuals with CD4 counts <100 cells/ μl. A nested case-control study in Harare.
(University of Zimbabwe, 2021-06-09)Background: Cryptococcosis is still a leading cause of mortality among patients with advanced HIV infection. Although CD4 T-cell deficiency is necessary for HIV-associated cryptococcosis, not all severely immunocompromised ... -
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 compartive study of vegetation structure and visibility at Wild Dog (Lycaon pictus) kill sites in and outside Hwange National Park
(2012-08-29)The objective of this study was to compare vegetation structure and visibility at sites at which wild dogs (Lycaon pictus) had killed kudu (Tragelaphus strepsiceros) and impala (Aepyceros melampus). The kill sites, within ... -
Deep learning for improved plant classification
(2018)Plants are crucial in the ecosystem: they enable life by providing oxygen, they have medicinal properties, among many other uses, and hence their classification is vital. Automating plant identification has remained a ... -
Design and consruction of microcontroller-based multi-parameter monitoring system.
(2012-09-07)Many farmers and agricultural research groups need environmental data to augment their agricultural measurements. Such data is needed to understand the physical environment that includes the climate in general, and the ...
