Faculty of Science: Recent submissions
Now showing items 41-60 of 312
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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 ... -
Distribution modelling of leptocybe invasa (hymenoptera: eulophidae), and an assessment of host susceptibility and relative efficacies of systemic insecticides for gum seedling protection in Zimbabwe
(2016)Studies were conducted from February 2015 to December 2015 to predict the potential distribution of the blue gum chalcid or Eucalyptus gall wasp, Leptocybe invasa Fisher and La Salle in Zimbabwe, to screen locally available ... -
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 ... -
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 ... -
Inflammatory markers associated with male genital Schistosomiasis and HIV co-Infection.
(2016)Schistosomiasis is a diseases caused by a water-borne parasitic trematode of different species of the genus Schistosoma. Male genital schistosomiasis is an infection caused by Schistosoma haematobium species which releases ... -
Molecular identification and characterisation of endophytesof indigenous trees in Zimbabwe
(2016)Endophytic bacteria of genera Bacilli, Klebsiella, Enterobacter and Serratia and Ascomyta endophytic fungi of genera Fusarium, Debaryomyces, Schizosaccharomyces and Microsporomyces were isolated from Pterocarpusangolensis, ... -
Investigating the inflammatory markers involved in Schistosoma haematobium protective immunity and susceptibility to infection
(2016)Schistosomiasis is a neglected tropical disease that affects more than 200 million people globally. In Zimbabwe, areas have been mapped that contain high S. haematobium morbidity. The effects are mostly felt in rural areas ... -
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. ... -
Synthesis of a novel visible light responsive γ-Fe2O3/SiO2 /C-TiO2 magnetic nanocomposite for water treatment
(2018)Recovery of TiO2 from a solution after photocatalysis is a matter of concern since it allows for reusability and better purification. Maghemite nanoparticles coated with silica and carbon doped titanium dioxide were ... -
Purification of water using surface engineered zeolites
(2018)Coal fly ash obtained from Coca Cola Company in Harare was utilised in synthesis of zeolites by hydrothermal method using 3M NaOH. The Ze-ZnO nanoflakes and Ze-ZnO nanorods were successfully synthesised using a combination ... -
Modelling spatial distribution of tsetse (Diptera: Glossinidae) in Masoka area, an unexplored part of Mbire District, Zimbabwe
(2016)A study was conducted from March 2015 to December 2015 in order to model the distribution of two savannah species of tsetse (Glossina sensu stricto), Glossina morsitans morsitans and G. pallidipes in the Masoka area of the ... -
On the analysis of risk premiums in power markets using the Barndorff-Nielsen and Shephard model with leverage
(2017)This thesis is devoted to the study of risk premiums in power markets using the Ornstein- Uhlenbeck process with Barndorff-Nielsen and Shephard stochastic volatility with leverage. Forwards were priced using a class of ... -
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 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. ... -
On cestode and digenean parasites of Clarias gariepinus (Burchell, 1822) from the Rietvlei Dam, South Africa
(Onderstepoort Journal of Veterinary Research, 2006-01-23)Sharptooth catfish, Clarias gariepinus, from the Rietvlei Dam near Pretoria, South Africa were examined for internal platyhelminth parasites. Two adult cestodes, Polyonchobothrium clarias (stomach) (prevalence 71 %, mean ... -
Isolation and characterization of extracts from wild edible and non-edible mushrooms in Zimbabwe
(2019-10)Poor nutrition and an increasing emergence of infectious diseases, particularly in developing countries, represent major threats to human health. Mushrooms are known to possess numerous bioactivities such as antioxidant ... -
GIS and remote sensing applications for modelling the distribution of elephants and their interaction with vegetation
(University of Zimbabwe, 2019-10)Knowledge of elephant (Loxodonta africana) interaction with vegetation is critical for conservation of the mega-herbivore and of other wildlife species found in the ecosystem. Although the impact of elephants on vegetation ... -
The diet of an invasive crayfish, Cherax quadricarinatus (Von Martens, 1868), in Lake Kariba, inferred using stomach content and stable isotope analyses
(Regional Euro-Asian Biological Invasions Centre (REABIC), 2018-01-27)The diet of an invasive crayfish, Cherax quadricarinatus (Von Martens 1868), in Lake Kariba, was investigated using stomach content analysis (SCA) and stable isotope analysis (SIA). The frequency of occurrence of macrophytes ... -
Distribution modelling of Leptocybe Invasa (Hymenoptera: Eulophidae), and an assessment of host susceptibility and relative efficacies of systemic insecticides for gum seedling protection in Zimbabwe
(2017-11-16)Studies were conducted from February 2015 to December 2015 to predict the potential distribution of the blue gum chalcid or Eucalyptus gall wasp, Leptocybe invasa Fisher and La Salle in Zimbabwe, to screen locally available ... -
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, ...
