Browsing Faculty of Science e-Theses Collection by Issue Date
Now showing items 21-40 of 257
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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 ... -
Isolation and Characterisation of a Bacteria with Cellulase Activity from Local Hot Springs.
(2012-08-28)A sporulating, aerobic Bacillus subtilis sp. was isolated from the Chimanimani hot spring in Zimbabwe. The microorganism was characterised using classical identification tools and molecular techniques. The microbial strain ... -
Influence of elephant (Loxodonta africana Blumenbach) on Baikiaea plurijuga dominated woody vegetation around natural and artificial watering points in the northern part of Hwange National Park, Zimbabwe
(2012-08-29)The extent of elephant damage on shrub and mature Baikiaea plurijuga was investigated around artificial and natural watering points in the Main Camp area of Hwange National Park. Damage was scored on a percentage basis for ... -
Designing a Quality of Service for mobile Ad Hoc Networks carrying multimedia traffic.
(2012-08-29)Multimedia transmission over communication networks has been growing rapidly with respect to the number of users and the amount and type of traffic. Wireless communications are a fast emerging technology and have become ... -
Study of ephemeral rock pools on Domboshawa Mountain, Zimbabwe.
(2012-08-29)Five ephemeral rock pools were sampled weekly from December 2006 to May 2007 on the Domboshawa Mountain. Physical variables, which included temperature, pH, dissolved oxygen, phosphorus, nitrogen, conductivity and pool ... -
Influence of Brachystegia spiciformis and Parinari curatellifolia on herbaceous flora and soils in Mukuvisi Woodlands, Harare
(2012-08-29)A comparative study between B. spiciformis and P. curatellifolia’s isolated and clumps of trees’ influence on patterning and structure of herbaceous flora and soils with those of adjacent open grasslands was conducted in ... -
The Abundance and Biting Behaviour of Anopheles merus (Dönitz) in Gokwe South District, Zimbabwe
(2012-08-29)Malaria is a major public health problem in most sub-Saharan countries. Anopheles merus (Dönitz), a saltwater breeding member of An. gambiae complex, is involved in low rate malaria transmission in this region. In this ... -
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 ... -
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. ... -
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 ... -
Towards a suitable framework for blended multimedia e-learning applications
(2012-08-29)Most universities in developing countries are using a teaching and learning approach known as blended e-learning, however, there was no a framework for blended multimedia-based e-learning applications. Further, there is ... -
Integrated Improved Security System Techniques in Combating Crime Using the Biometrics at the National Airport of Zimbabwe
(2012-08-29)Biometrics have become very popular as a tool in combating crime in the world. This has also been necessitated by the September 11 2001 event. Despite all the research that has been carried out the improvement of the ... -
Application of a dynamic greenhouse climate model for irrigation scheduling in a greenhouse rose crop in Zimbabwe
(2012-08-29)An assessment on the potential of the Gembloux Greenhouse Climate Model (GDGCM) as a tool for irrigation scheduling was done on a rose (Rosa Hybrida) crop grown in an Azrom type greenhouse, located in Harare, Zimbabwe. The ... -
Using Genetic Engineering Algorithm to Prevent Subversion of an Intrusion Detection System
(2012-08-29)Intruders mercilessly attack commercial, academic, defence; healthy centers distributed (networked) systems frequently, and often successfully. The challenges of intruders have become very critical. The most perceived ... -
MANETS/VANETS in AutomobileSystems: A Simulative Study into how Mobile Ad-hoc Networks can be used in Traffic Control Systems
(2012-08-29)This thesis describes the modeling and implementation of an advanced traffic signal control system within a simulation environment, thus creating a laboratory for the evaluation of advanced traffic control strategies ... -
The use of knowledge bases as repositories in learning environments.
(2012-08-29)This dissertation proposes a method of management of Learning Objects Repositories (LORs). It looks at both the storage and search of learning objects (LOs) in the LORs. The focus is on how LORs can be structured in order ... -
To find cost effective routes that are able to meet the fuel/time constraints using the Intelligent Transportation Systems in VANETS
(2012-08-29)The use of real-time information in Intelligent Transportation Systems (ITS) in particular Vehicular Ad hoc Networks (VANETs) has the potential to improve traffic conditions and reduce travel delays by facilitating better ... -
Impact of cultivation on soil and species composition of the Monavale Vlei, Harare
(2012-08-29)The study assessed the impact of cultivation on soil properties, species richness (grass and herbaceous) and species composition on the Monavale vlei. The results revealed that cultivation had an impact on nitrogen levels, ... -
Morphological variation in bills and claws in relation to Prey type in Southern African Birds of Prey (Orders Falconiformes and Strigiformes)
(2012-08-29)Bill and claw morphological characteristics were measured to establish the extent of functional similarities in the hunting and feeding apparatus among Southern African birds of prey (orders Falconiformes and Strigiformes) ... -
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 ...
