Browsing All Electronic Theses and Dissertations by Title
Now showing items 3109-3128 of 4531
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Paleopolyploidy and molecular systematics of Southern African Chloridoideae
(University of the Free State, 2003-05)English: This study dealt with systematics of southern African representatives of the grass subfamily Chloridoideae. The group was studied on molecular and cytogenetic levels. Two main basic chromosome numbers in the ... -
Palladium catalysed hydroesterification and aminocarbonylation of substituted alkenes and alkynes
(University of the Free State, 2018-04)Since the aim of this study was to investigate the influence of the electronic environment around the double bond of alkenes on the reactivity and regioselectivity of the methoxycarbonylation reaction for developing new ... -
Palynology of late quaternary deposits from the central plateau, South Africa
(University of the Free State, 1999-11)English: Pollen analyses of organic sediments from Clarens, in the eastern Free State, Florisbad, in the central Free State and Blydefontein, in the Karoo were carried out to investigate the mechanism of vegetation and ... -
A paradox of poisonous beauty: water desalination plant and urban wetland on Main Reef Road Johannesburg
(University of the Free State, 2011)The past decade has been witness to a resurgence of interest in ecologically sustainable thinking about the design and management of reclaimed, post-industrial landscapes. As a result, landscapes that were not previously ... -
The parageneses of sulphide minerals in transgressive carbonatite of the Palabora Carbonatite Complex, South Africa
(University of the Free State, 2019-03)The Palabora Complex, also known as the Palabora Carbonatite Complex, is situated in the Limpopo Province, next to the town of Phalaborwa. The complex intruded the Kaapvaal Craton in early Proterozoic times. The centre of ... -
Parameters influencing regioselectivity in the palladium catalysed carbonylation of stilbenes and related alkenes
(University of the Free State, 2013-01)English: Flavonoids are polyphenolic naturally occurring compounds with a wide variety of biological and physiological activities, like anti-platelet, anti-inflammatory, antioxidant, antiviral, antiallergenic, and antitumor ... -
Parametric analysis to describe genotype x environment interaction and yield stability in winter wheat
(University of the Free State, 1997)No abstract available. -
Parametric and nonparametric Bayesian statistical inference in animal science
(University of the Free State, 2000-11)Chapter 1 illustrated an extension of the Gibbs sampler to solve problems arising in animal breeding theory. Formulae were derived and presented to implement the Gibbs sampler where-after marginal densities, posterior ... -
Parametric estimating: the history, theory and application thereof in the South African building industry
(University of the Free State, 1979-01)Abstract not available -
Parasite induced behavioural changes in fish
(University of the Free State, 2011-05)English: Numerous studies have been conducted on the hypothesis of parasites influencing the behaviour of their hosts. Many authors have been bias in trying to prove that this is a form of manipulation and that parasites ... -
Parasites of Barbus species (Cyprinidae) of southern Africa
(University of the Free State, 2015-07)English: The fish family Cyprinidae is represented by eight genera and 80 species in southern African rivers, consisting of a few large fish genera of the genus Labeo Ruppëll, 1836 and the yellow fish species Labeobarbus ... -
Parasitoids and aphid resistant plants : prospects for Diuraphis noxia (Kurdjumov) control
(University of the Free State, 2007-11-03)English: Host plant resistance and biological control by means of natural enemies are becoming more favourable as high potential alternatives for chemical control of insect pests. Tritrophic studies (plant–herbivore-natural ... -
Parental involvement in sport: perceptions of competitive adolescent swimmers
(University of the Free State, 2006-11)English: All adults involved in children’s sport affect the nature of the sporting experience, and to a large extent determine whether or not it is a positive experience for children. Of all adults involved, the parents ... -
Parenting adolescents: a phenomenological approach
(University of the Free State, 2013-01)English: The purpose of this qualitative, phenomenological study was to explore the dynamics of the parenting experience as it relates to parenting adolescents, with the specific aim of exploring and achieving an understanding ... -
Parents' descriptions of the character strengths of their children
(University of the Free State, 2018-03)A positive psychology approach guided the research study. Research within positive psychology conducted on a characteristic level provided insights into the impact of positive emotions and character traits on the functioning ... -
Parents, educators and children: perceptions on dyspraxia
(University of the Free State, 2013-02)English: Dyspraxia is a developmental condition in which the ability to ideate, plan and execute new and novel actions is impaired (Bundy, Lane & Murray, 2002:477- 478). The aim of this study was to investigate the child’s, ... -
Parent’s expectation of sexuality education: implications for teacher education
(University of the Free State, 2014-11)Adolescents and young people represent the future of every society. In South Africa however young people are carrying the burden of the HIV pandemic and unintended pregnancies. South Africa is seeing unprecedented levels ... -
Parity and motor control in female recreational runners
(University of the Free State, 2016-07)Female recreational runners are more prone to injuries than their male counterparts. Considering the associated risk for sustaining sport-related injuries with impaired core proprioception and the effect pregnancy has on ... -
Participation of traditional leadership on spatial planning and land use management matters in the Mpumalanga province Republic of South Africa
(University of the Free State, 2016-01)This research report explores the participation of traditional leadership in spatial planning and land use management matters in Mpumalanga Province. The report provides a brief overview of the historic background of ... -
Participative spatial planning on marginalised campuses during transformational processes
(University of the Free State, 2016-01)Abstract not available