Browsing Faculty of Science e-Theses Collection by Title
Now showing items 204-223 of 257
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Quality of Service in Wireless Ad-hoc Networks
(2012-08-29)As a consequence of the increased popularity of wireless local area networks (WLANs) based on IEEE 802.11, the interest for ad hoc networks has also increased. An ad-hoc network is an autonomous wireless network that can ... -
Relational Database Framework for Geo Spatial Data Sets
(2012-08-29)Geographic Information Systems (GISs) have emerged as the most powerful and effective decision-making tools in terms of gathering, analysis, interpreting, distribution and using geographically referenced (Spatial) data for ... -
Remote sensing of waterhole distribution and its impact on wildlife and livestock interactions across a gradient of land use in a Southern African savanna
(2014-10-07)Arid and semi-arid ecosystems are water limited ecosystems. Thus, understanding the spatial and temporal dynamics in water availability is critical. In this study, we tested whether and to what extent we can use remotely ... -
Remote sensing patterns of net primary productivity in the Great Limpopo Transfrontier Conservation Area (GLTFCA) in relation to land use and land tenure
(2014-10-07)Net Primary Productivity (NPP) is an important indicator of ecosystem health and its estimation and understanding of factors determining its spatial and temporal variations is critical. Previous studies have mainly ... -
Response of Navel orange trees to timed partial root zone drying in northern Zimbabwe
(2012-09-07)Navel orange trees (Citrus sinensis (L.)Osbeck) were drip irrigated in an 8 hectare commercial orchard at Mazowe Citrus Estate (Mazowe Citrus Estate: block U5A) in the 2009/2010 season. We investigated the effects of partial ... -
The response of Zimbabwean sorghum and maize landraces to Striga Asiatica infestation
(2016-04)Sorghum and Maize are important cereals for food security in Zimbabwe. However maize and sorghum production in the smallholder farming sector is being threatened by witch weed, (Striga asiatica ), which has the potential ... -
Screening for the effects of selected Zimbabwean plant extracts on enzymes and processes involved in pain and inflammation.
(2016-04)Inflammation is a complex process that is mediated by signalling radicals and prostaglandins. Prostaglandins are produced by conversion of arachidonic acid by cyclooxygenase (COX) isoenzymes. Selective inhibition of ... -
Single Period Inventory Models for Products whose Demand Follows Compound Distributions
(2012-08-31)Up to this point, the Single Period Inventory models developed have focused on a product whose demand distribution in a single period is some simple classical distribution like the normal distribution, log-normal distribution, ... -
The Socio-Economic Impact of HIV/AIDS on Communal Agriculture in Kandeya and Chundu Wards of Mt Darwin and Hurungwe Districts
(2012-08-16)The Human Immunodeficiency Virus /Acquired Immuno-deficiency Syndrome (HIV/AIDS) epidemic is one of the greatest challenges currently facing Zimbabwe. With a national adult prevalence rate of 24.6%, no crisis in the history ... -
Solid Waste Disposal in Victoria Falls Town: Spatial Dynamics, Environmental Impacts, Health Threats and Socio-economic Benefits.
(2012-08-16)The sanitary disposal of solid wastes constitutes one of the most pressing challenges facing urban authorities in Zimbabwe. In recent years, there has been considerable increase in illegal waste dumping, which indicates ... -
Some apsects of products of totally permutable groups.
(2012-09-03)In this work groups factorised as products of pairwise totally permutable subgroups are investigated in the framework of SC-groups, P ST -groups, PT -groups and T -groups. In particular an attempt is made to answer the ... -
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 ... -
Spatial distribution of elephants (LOXODONTA AFRICANA) in Hwange Mining Concession area
(2014-10-07)In this study we tested whether and how environmental factors such as distance from water points inside mine dumps, distance from water points outside mine dumps, distance away from settlements, distance away from ... -
Spatial modelling of water pipe bursts in Harare, Zimbabwe
(2014-10-07)Water is a scarce commodity whose availability and utilisation requires diligent planning, distribution and management to ensure its proper use and protection in the interest of humankind and other ecological balances. ... -
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 ... -
Speciation and persistence of Tetracycline Antibiotics in the Aquatic environment: Characterization in terms of a Linear Rate Modea
(2016-09)The present work aimed at studying the degradation of tetracycline antibiotics in the aquatic environment with a view of arriving at a linear rate model taking into account microbial, photolytic and hydrolytic degradation, ... -
Speciation and persistence of tetracycline antibiotics in the aquatic environment: Characterization in terms of a linear rate model
(2017-08)The present work aimed at studying the degradation of tetracycline antibiotics in the aquatic environment with a view of arriving at a linear rate model taking into account microbial, photolytic and hydrolytic degradation, ... -
Speciation and Persistence of Tetracycline Antibiotics in the Aquatic Environment: Characterization in terms of a Linear Rate Model
(2017-10-10)The present work aimed at studying the degradation of tetracycline antibiotics in the aquatic environment with a view of arriving at a linear rate model taking into account microbial, photolytic and hydrolytic degradation, ... -
Stream Fish Assemblages Along the Longitudinal Gradient of the Nyangui River.
(2012-08-29)This study investigated the influence of longitudinal and environmental gradients on fish biodiversity in a central African context. The Nyagui River was used as a study site. Fish and microhabitat data were collected at ... -
Structural Geology of the Umkondo Group in Eastern Zimbabwe and Geochronology of Associated Mafic Rocks and Possible Correlatives in Zimbabwe.
(2012-08-16)Metasedimentary rocks of the Mesoproterozoic Umkondo group in eastern Zimbabwe record the presence of an epicontinental basin situated near the eastern margin of the Kalahari craton. The Umkondo group is subdivided into ...
