Faculty of Science
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Recent Submissions
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An Upper Bound on the Radius of a 3-Vertex-Connected C4-Free Graph
(HINDAWI, 2020-08-04)Let G=(V,E) be a finite, connected, undirected graph with vertex set V and edge set E. -e distance dG (u,v) between two vertices u, v of G is the length of a shortest u-v path in G.-e eccentricity ec(v)of a vertex v∈V is ... -
Upper Bounds on the Diameter of Bipartite and Triangle-Free Graphs with Prescribed Edge Connectivity
(HINDAWI, 2020-09-03)Graph theory is used to study the mathematical structures of pairwise relations among objects. Mathematically, a pair G=(V,E) is a crisp graph, where V is a nonempty set and E is a relation on V[1]. -e order of a graph G ... -
Spanning paths in graphs
(Elsevier, 2018-08-29)The Conjecture, Graffiti.pc 190, of the computer program Graffiti.pc, instructed by DeLavi˜na, state that every simple connected graph G with minimum degree δ and leaf number L(G) such that δ ≥ 1 2 (L(G) + 1), is traceable. ... -
Modeling the transmission dynamics of brucellosis
(University of Zimbabwe, 2019-10)Brucellosis, a neglected zoonotic disease remains a major public health problem world over. It affects domesticated animals, wildlife and humans. With large pastoral communities, and demand for meat and livestock production ... -
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 ... -
Effects of human disturbance on the distribution of native and exotic Species: A study based on evidence from three sites in Zimbabwe
(University of Zimbabwe, 2016-10)The understanding of factors driving plant invasions in African Savannas which is pivotal for their management is currently poor. Therefore, this study tested several hypotheses that link human disturbance to species ... -
Biocide development for hard surfaces using extracts and compounds from Callistemon citrinus
(Univeristy of Zimbabwe, 2019-06)The global is now focusing on the use of herbal products and among them are herbal disinfectants. Plants contain a variety of secondary metabolites which include phenolic compounds, tannins, terpenoids, alkaloids and ... -
Water holes typology as a function of human and ungulate Activities in Hwange National Park, Zimbabwe
(University of Zimbabwe, 2018)Small aquatic ecosystems in semi-arid environments are characterised by strong seasonal water level fluctuations. Artificial pumping of ground water to maintain water resources throughout the dry season may affect the ... -
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 ...
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