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Diolefin complexes of transition metals as 'venus fly-trap' templates
(University of the Free State, 2011-06)
English: The aim of this study was to gain a further insight into the bonding modes of 1,5-cyclooctadiene
to various middle to late transition metal centres. The intension was to design a
theoretical model of the influences ...
Pests and predators on genetically altered cotton (Bt-cotton) and associated host plants in South Africa
(University of the Free State, 2009-09-23)
The efficacy of the Bt-genes (the cry1Ac and cry2Ab2 genes) were evaluated for bollworms (i.e. the American or “African” bollworm, Helicoverpa armigera, the red bollworm Diparopsis castanea and the spiny bollworm species, ...
Agronomic performance, consumer acceptability and nutrient content of new sweet potato varieties in South Africa
(University of the Free State, 2010-05)
English: Malnutrition, including vitamin A deficiency, and food insecurity are national priorities in South Africa. Sweet potato has several agronomic advantages giving it potential to address both priorities. The crop is ...
In situ source characterisation of dense non-aqueous phase liquids (DNAPLs) in a fractured rock environment
(University of the Free State, 2013-06)
English: The remediation of sites contaminated by dense non-aqueous phase liquids (DNAPLs) continues to present a significant environmental challenge globally. Contributing to this challenge is the difficulty in locating ...
Comparing model calculated groundwater volumes with alternative methods in a mining enviroment
(University of the Free State, 2012-09)
English: A new opencast coal mining operation is proposed in the Belfast region in Mpumalanga, South Africa. This proposed operation is the study site that was investigated in this thesis. The Belfast opencast operation ...
Trends in South African agricultural land prices
(University of the Free State, 2006-12-07)
English: In recent years, concern has been expressed over rising agricultural land prices in South Africa. A major concern was that this situation would impede the successful implementation of the on-going land reform ...
Impact of climate change on smallholder farming in Zimbabwe, using a modelling approach
(University of the Free State, 2014-01)
Agriculture is pivotal to the development of most countries in southern Africa, including Zimbabwe, with the sector contributing significantly to the Gross Domestic Product of these countries. The sector also provides ...
The evaluation of catholyte treatment on the colour and tensile properties of dyed cotton, polyester and polyamide 6,6 fabrics
(University of the Free State, 2015-01)
English: Colour is one of the most significant factors in the appeal and marketability of textile products. Cotton, polyester and polyamide 6,6 are the most prominent groups of fibres used in the world. A Life Cycle ...
Reactive transport modelling of fertilizer waste in a dual porosity aquifer
(University of the Free State, 2011-11-16)
English: The fertilizer production facility had a negative impact on the soil, groundwater and surface water environment due to the handling / storage and production activities at the site. Observations and numerical ...
The development of Lachenalia cultivars
(University of the Free State, 2013-09)
The floriculture and ornamental industry is constantly looking for new products. South Africa is blessed with an exceptional rich bio-diversity and many South African plants have found their way onto international markets. ...