Browsing All Electronic Theses and Dissertations by Title
Now showing items 3012-3031 of 4579
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O,O'-chelated titanium(IV) complexes: a synthetic, kinetic, electrochemical and structural study
(University of the Free State, 2008-11)Synthetic routes to prepare fluorinated tetrahedral mono-β-diketonato titanium(IV) complexes, [Cp2Ti(β)+], octahedral bis-β-diketonato titanium(IV) complexes, Ti(β)2Cl2 and Ti(β)2biphen, as well as dimeric and tetrameric ... -
Obsesity, undernutrition and the double burden of disease in the Free State
(University of the Free State, 2012-07)Introduction: Stunting in childhood predisposes to obesity, increasing the risk for chronic diseases of lifestyle in adulthood (i.e. the double burden of disease). Objectives: To gain insight into the eating patterns and ... -
Obstacles that hamper learners from successfully translating mathematical word problems into number sentences
(University of the Free State, 2014)Various research studies show that the language ability and Mathematics performance of primary school learners are closely related. In South Africa, as is elsewhere, the language issue at schools has always been shifted ... -
Obstetric anaesthesiology in level I and II hospitals in the Free State : a study and audit of remedial interventions
(University of the Free State, 2010-03-24)Reports from the maternal death notification system showed a high number of maternal deaths from anaesthesia in the Free State. I initiated this study in order to investigate and rectify factors identified as being associated ... -
Occupational therapy and ideology: a critical investigation
(University of the Free State, 2006)English: Occupational Therapy’s (henceforth referred to as OT) self-concept apparently remains, for all practical purposes, not well defined. While the complexity of the OT profession’s definition and their subsequent ... -
Occupational therapy assessment and the medico-legal report: the legal perspective
(University of the Free State, 2012)The involvement of the occupational therapist in medico-legal work or third party claims is not a new phenomenon. Research in this area however previously focused on the skills and other traits of the occupational therapist. ... -
The occupations and socio-cultural context of Sesotho speaking adults with mental health problems
(University of the Free State, 2012-02)English: The aim of this study was to explore the occupations and socio-cultural context of the Sesotho speaking adult with mental health problems, attending either of the group therapy programs at The Clinic or The Second ... -
The occurrance of groundwater in the Limpopo Province north of latitude 23⁰S
(University of the Free State, 2012-04)Abstract not available -
The occurrence and diversity of yeasts in commercial yoghurt
(University of the Free State, 2001-11)Yeasts have a competitive advantage in yoghurt due to its ability to grow at low pH values and temperatures and therefore are major role players in causing spoilage. The yeasts occurring as natural microflora in commercial ... -
The occurrence and evaluation of LNAPLs contamination in urban areas of South Africa
(University of the Free State, 2005-11)Petroleum liquids are a basic building block of our modern lives. Uses include fuels, lubricants, and the raw material for manufactured products. The by-product of these uses has been the inadvertent release of petroleum ... -
Occurrence of groundwater in the Phalaborwa igneous complex
(University of the Free State, 2011-05)English: Three water bearing aquifer zones were defined in this study for the Phalaborwa Igneous Complex, namely a shallow weathered aquifer zone, fractured aquifer zone and the fresh to slightly fractured aquifer zone. ... -
Occurrence, growth and survival of yeasts in matured cheddar
(University of the Free State, 1999-03)Yeasts play an important role in dairy products causing spoilage or contribute positively to the ripening of some cheeses due to their lipolytic and proteolytic activities and the ability to grow at low temperatures, pH ... -
Oefen- en beseringsprofiel van Griffons en Puma rugbyspelers
(University of the Free State, 2011)English: Rugby is a very popular, fast paced, high intensity team sport. The players are permanently in motion and contact with one another, and for this reason the risk of injury is very high. The number of injuries ... -
A of finlaysonia and streptocaulon (periplocoideae; apocynaceae)taxonomic revision
(University of the Free State, 2012-11)English: A taxonomic revision of Finlaysonia Wall. and Streptocaulon Wight and Arn. (Apocynaceae; Periplocoideaea) in Asia is presented. This revision comprises an investigation of the nomenclature of the two genera and ... -
Oil politics in Ecuador and Nigeria: a perspective from environmental history on the struggles between ethnic minority groups, multinational oil companies and national governments
(University of the Free State, 2003-11)English: Oil-related struggles by ethnic minority groups against their national governments and multinational oil companies active in their traditional territories in South America and Africa have made headlines across the ... -
Old stories and new chapters: a biographical study of white Afrikaans speaking identity in central South Africa
(University of the Free State, 2013-02)Since the fall of apartheid and the emergence of a wholly democratic South Africa in 1994, little research has been done on the topic of white identity in this rapidly transforming multicultural society. Indeed, apart from ... -
Old yellow enzymes from extremophiles: finding and characterizing potential biocatalysts
(University of the Free State, 2012-07)English: The old yellow enzyme (OYE) family is a diverse group of flavoenzymes that catalyse the asymmetric reduction of activated C=C bonds of a wide variety of α/β-unsaturated carbonyl compounds. OYEs are attractive ... -
On some methods of reliability improvement of engineering systems
(University of the Free State, 2015-08)The purpose of this thesis was to study some methods of reliability improvement of engineering systems. The reason for selecting the theme “reliability improvement of engineering systems” was first to explore traditional ... -
On the evolution of the cataclysmic variable stars from the super soft X-ray sources: AE Aquarii a trial case
(University of the Free State, 2006-11)It is shown that the wide binary system and short white dwarf spin period of AE Aquarii (AE Aqr), i.e. Pspin,1~ 33 s , is perfectly reconcilable with a high mass accretion history of the white dwarf. The long orbital period ... -
On the use of extreme value theory in energy markets
(University of the Free State, 2007-05-09)English: The thesis intent is to provide a set of statistical methodologies in the field of Extreme Value Theory (EVT) with a particular application to energy losses, in Gigawatt-hours (GWh) experienced by electrical ...