Faculty of Science: Recent submissions
Now showing items 141-160 of 317
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Nutritional composition, antioxidant activity and bioaccessibility of phenolic compounds in selected wild cereal and pseudo-cereal grains found in Zimbabwe
(2016-04)The nutritional composition of five wild and two domesticated cereal grains was determined using standard analytical methods. It was hypothesised that wild cereal and pseudo cereal grains found in Zimbabwe contained macro ... -
In vitro antibacterial activity of selected plant extracts from Zimbabwe
(2016-04)Bacterial infections, if not properly treated, have the potential to become life-threatening in humans. The discovery of antibiotics in the 1940s made it possible for bacterial infections to be easily managed, thus, ... -
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 ... -
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 ... -
Design of nickel cathode sampling in the manufacture of nickel by the Outokumpu process
(2016-04)Industrial cathodes have the potential of being extremely nonuniform in impurity content. Obtaining a representative sample is essential in evaluating specifications compliance in industrial cathodes which determine its ... -
Determination of platinum, palladium, rhodium and gold in ores and concentrates using iridium and ruthenium as co-collectors by fire assay
(2016-04)Determination of platinum group metals (PGMs) and gold also known as precious metals is always a very difficult task, this is due to their availability in trace amounts in sample types of complex composition. Little research ... -
Preliminary studies on the winter season abundance and fitness of tephritid fruit flies in the Harare area, Zimbabwe
(2016-04)Fruit flies (Diptera: Tephritidae) are among the major constraints in commercial fruit production in many developing African countries. Due to their economic importance, knowledge of the tephritid fruit fly spectrum ... -
Land use/ land cover changes and stakeholders: Investigating sustainable natural resources management options for an a1 farm a case study of Essexdale farm in Marondera district, Zimbabwe
(2016-04)The tracking of the land use/land cover changes that took place in Essexdale Farm (a communal resettlement area in Marondera District of Zimbabwe) from the period 1985 to 2012 was conducted using the two methods: the ... -
HPLC determination of atrazine in water and sediment samples after liquid-liquid and solid phase extraction: A comparative study.
(2016)Atrazine is a selective herbicide for control of broadleaf and grassy weeds in corn, sorghum and sugarcane. The extraction efficiency was studied using distilled water, river water and sediment samples. A two-step procedure ... -
Characterisation of oil extracted from parinari curatellifolia (hacha) nuts
(2016-04)Several oils have been characterised by many researchers as a way of unravelling their usefulness. Chinweubwa Arinze Jude, 2013 extracted oil from ground Nicotiana tabacum seeds by soxhlet.The percentage oil content was ... -
Bounds on distance-based graph parameters
(2016-04)In this thesis, we deal with bounds on distance measures, namely, degree distance, radius, diameter and the leaf number, in terms of other graph parameters, such as order and the three classical connectivity measures, ... -
Trends in spatial distribution of alien woody species and primary production on invaded sites in Nyanga National Park, Zimbabwe
(2016-04)The study sought to establish trends in spatial distribution of the invasive plants, Acacia mearnsii (black wattle) and Pinus spp (pines) and assess their impact on primary production in Nyanga National Park, Zimbabwe, ... -
An evaluation of the vulnerability of Uzumba Maramba Pfungwe (UMP) district of Zimbabwe to agrometeorological hazards and extreme events for improved farmer resilience
(2016-04)Increased climate variability due to climate change has always results in the occurrence of varied meteorological hazards world-wide. These hazards and extreme events have the potential to decimate completely a people’s ... -
Fluids and gold mineralisation in the late Archaean Harare Greenstone Belt, Zimbabwe
(2015-08-25)The study of selected gold deposits (i.e. Venus, Gladstone, Ceylon, Mashona Kop, Graham Nigel, Chigimira and Viking) in the late Archaean Harare Greenstone Belt (IIGB) has revealed the presence of more than one fluid ... -
Remote sensing applications in tobacco yield estimation and the recommended research in Zimbabwe
(Hindawi, 2013-10)Tobacco crop area and yield forecasts are important in stabilizing tobacco prices at the auction floors. Tobacco yield estimation in Zimbabwe is currently based on statistical surveys and ground-based field reports.These ... -
Spectral indices: In-season dry mass and yield relationship of flue-cured tobacco under different planting dates and fertiliser levels
(Hindawi, 2013-08-13)This experiment investigated the relationship between tobacco canopy spectral characteristics and tobacco biomass. A completely randomized design, with plantings on the 15th of September, October, November, and December, ... -
Assessing the spectral separability of flue cured tobacco varieties established on different planting dates and under varying fertilizer management levels
(Hindawi, 2014-01-24)The NDVI was used to discriminate tobacco variety, assess fertilizer levels, and determine the impact of planting date on separating crops. A split plot design with four planting dates, September, October, November, and ... -
Impact of elephants (LOXONDONTA AFRICANA L.) on baobab trees (ADANSONIA DIGITATA L.) in Man Pools National Park Zambezi Valley Region
(2013)An assessment was made on elephant impact on a baobab population in Mana Pools National Park. Study sites were selected on the basis of their distance from the Zambezi River, a major source of perennial water in the park. ... -
Semi-quantitative mineralogical valuation of the non-nickeliferous weathering crusts in the northeast of Cuba
(High Institute of Mining and Metallurgy (ISMM), 2010-12)This study presents a semi-quantitative mineralogical evaluation of the non-nickeliferous weathering crusts in the areas of Baconal, El Culebro, Caimanes and Farallones in the northeast of Cuba. The main objective of this ... -
An overview of non-nickeliferous weathering crusts in Eastern Cuba
(High Institute of Mining and Metallurgy (ISMM), 2010-06)This paper presents an overview of the studies in non-nickeliferous weathering crusts initiated more than six decades ago in Eastern Cuba. This overview is based on a detailed literature review and a descriptive-critical ...
