Faculty of Science: Recent submissions
Now showing items 81-100 of 312
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Adsorption of volatile n-Alkanes and polar organic solvents by water hyacinth (Eichhornia crassipes) root biomass: Thermodynamics, mechanism and effect of chemical treatment
(2017-07)The use of lignocellulosic materials as biosorbents has both environmental and economic benefits. They are biodegradable, safe to use and most importantly renewable and less costly. The objectives of this present study ... -
Diversity patterns and host shifts in ectomycorrhizal fungi across an agricultural disturbance gradient in the mid-Zambezi area, Zimbabwe
(2016-11)Fallowing creates land mosaics characterised by vegetation communities at different stages of succession. Such mosaics are expected to harbour mycorrhizal associations that reflect host species composition and diversity. ... -
Avocado seed starch and carboxymethyl cellulose superabsorbent polymer: Synthesis and characterisation.
(2016)Superabsorbent polymers (SAPs) of crosslinked avocado seed starch and carboxymethyl cellulose were synthesized and their performance as fluid absorption materials was assessed by comparing them with those made from analytical ... -
Average distance and edge-connectivity I
(Society for Industrial and Applied Mathematics, 2015-01-15)The average distance $\mu(G)$ of a connected graph G of order n is the average of the distances between all pairs of vertices of G. We prove that if G is a $\lambda$-edge-connected graph of order n, then the bounds $\mu(G) ... -
Minimum degree, leaf number and traceability
(Institute of Mathematics of the Czech Academy of Sciences, 2013-03-26)Let G be a finite connected graph with minimum degree δ. The leaf number L (G) of G is defined as the maximum number of leaf vertices contained in a spanning tree of G. We prove that if δ >12(L (G) + 1), then G is 2-connected. ... -
Spatiotemporal patterns of clinical bovine dermatophilosis in Zimbabwe 1995-2014
(AOSIS, 2017-06-27)A retrospective study of clinical bovine dermatophilosis outbreaks and cases for the period 1995-2014 was conducted, using data obtained from the Division of Veterinary Services (DVS). A total of 3856 outbreaks and 26 659 ... -
Extraction and characterisation of phytochemicals from white seringa (kirkia acuminata) bark extracts
(2016-10)The intention of this study was to extract and characterise phytochemicals with analgesic effect from Kirkia Acuminata bark extracts. Soxhlet extraction and Steam distillation were used for the extraction of compounds. ... -
Proportions of CD41 memory T cells are altered in individuals chronically infected with Schistosoma haematobium
(Nature Publishing Group, 2012-06-26)Characterisation of protective helminth acquired immunity in humans or experimental models has focused on effector responses with little work conducted on memory responses. Here we show for the first time, that human ... -
Adsorption of volatile n-alkanes and polar organic solvents by water hyacinth (Eichhornia crassipes) root biomass: Thermodynamics, mechanism and effect of chemical treatment
(2017-03)The use of lignocellulosic materials as biosorbents has both environmental and economic benefits. They are biodegradable, safe to use and most importantly renewable and less costly. The objectives of this present study ... -
Avocado seed starch and carboxymethyl cellulose superabsorbent polymer: Synthesis and characterisation
(2017-03)Superabsorbent polymers (SAPs) of crosslinked avocado seed starch and carboxymethyl cellulose were synthesized and their performance as fluid absorption materials was assessed by comparing them with those made from analytical ... -
In Vitro assessment of the probiotic properties of lactic acid bacteria isolated from sorghum mahewu
(2016-10)Fermentation of cereal grains is associated with beneficial microorganisms, referred to as probiotics. Probiotics are live microorganisms which confer health benefits to host organisms when consumed in adequate amounts. ... -
Application of a homogeneously sulphonated polystyrene membrane in the purification of waste water
(2016-11)The homogeneous sulphonation of waste polystyrene and its subsequent use in waste water purification was studied. The targeted waste was white food trays collected from roadsides, bins and waste dumps. They were shredded ... -
African potato ( Hypoxis Spp): Diversity and comparison of the phytochemical profiles and cytotoxicity evaluation of four Zimbabwean species
(Open Science Publishers, 2014-01-22)The Hypoxis corm has a catalogue of medicinal uses and also serves as a source of food. Most scientific research on Hypoxis has centred on Hypoxis hemerocallidea although many other species are exploited medicinally. ... -
Phytochemical and analgesic activity of root crude extracts of Dicoma niccolifera wild (Asteraceae)
(Open Science Publishers, 2013-03-09)The study aimed at evaluating the phytochemical profile and anti-nociception activity of root crude extracts of D. niccolifera, a plant commonly used to alleviate painful conditions by local communities. Standard phytochemical ... -
Selected purified plant compounds as possible inhibitors of rv1819c a drug efflux pump (abc protein) from mycobacterium tuberculosis
(Ebioscholar, 2013-11-13)Multidrug-resistant tuberculosis (MDR-TB) is among the most worrisome aspects of the pandemic of antibiotic resistance because TB patients that fail treatment have a high risk of death. The active multidrug efflux pump ... -
Pesticide management practices among rural market gardening farmers near Harare, Zimbabwe
(Academy of Science of South Africa, 2016-04-19)In 2014, we carried out a survey in Chinamhora and Chihota communal lands on the outskirts of Harare city, with the aim of understanding pesticide management practices among market gardening farmers. The farmers grew ... -
Magnetic nanopore composite beads for simultaneous removal of organic and inorganic pollutants in highly acidic water
(2016-10)A novel magnetic nanocomposite bead was synthesised for the simultaneous removal of cationic, anionic and organic pollutants removal in highly acidic water. Copper, chromium (III), phosphate and toluene were used as ... -
Distance measures in graphs
(2016-10)This thesis details the results of an investigation of bounds on four distances measures, namely, radius, diameter, the Gutman index and the edge-Wiener index, in terms of other graph parameters, namely, order, irregularity ... -
Preparation of activated carbon from tobacco stalks using microwave assisted chemical activation for water purification
(2016-11)Tobacco crop is an economically important crop. The remaining stalk after reaping the leaf however presents environmental pollution challenges. The carbonaceous nature of the stalk on the other hand makes it a promising ... -
Influence of inflammatory markers on HIV pathogenesis
(2016-10)HIV infection can now be treated effectively with combination antiretroviral medications, and mortalities due to AIDS have been greatly reduced. The increase in the number of deaths and incidences of heart and liver diseases ...
