Browsing Faculty of Natural Science by Issue Date
Now showing items 1-20 of 2365
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Inleiding tot die eksperimentele Sielkunde
(University of the Western Cape, 1948)Elke skolier wat rue tevrede is om dit op skool slegs met lepels in te kry nie, het seker al gewonder hoe kennis oorspronklik verkry word. In daardie stadium is ons gewoonlik nog tevrede om die feite wat die onderwyser aan ... -
An investigation of the effects of donor age on some haematological characteristics of the Wistar rat (Rattus Norwegicus)
(University of the Western Cape, 1986)Knowledge of haematological 'normdata', of experimental animals, and the biological variables that affect it is essential in order to recognise variations from the normal. In addition, the haemopoietic system may be ... -
The effect of Nicotine exposure on aspects of liver Carbohydrate metabolism
(University of the Western Cape, 1989)The liver plays an important role in maintaining the blood glucose concentration. In this respect glycogenolysis and gluconeogenesis play an important role. Interference with these pathways may therefore have an effect on ... -
Population and Physiological Studies of selected Geophytics Species of Lowland Coastal Fynbos in the Southwestern Cape
(University of the Western Cape, 1990)Population and physiological studies were conducted in coastal fynbos in the South-western Cape. Minor ecophysiological studies were also conducted such as the soil moisture content and pH. Two species, viz. Haemanthus ... -
a comparative study of the influence of different copper concentrations on the growth, chemical composition and activities of certain copper containing enzymes in atriplex nummularia lindl. and a. vestita (thunb.) Aell.
(University of the Western Cape, 1990)The total amount of native copper in soil depends on the amount of copper in the parent material (Tisdale .et .al.1968). It is usually in greater concentration in the soil than in parent rock because of weathering of the ... -
Seisoensfluktuasies in Industriële produksie en die Aandelemark met spesiale verwysing na die Suid - Afrikaanse situasie
(University of the Western Cape, 1991)In 1976 Rozeff and Kinney found that seasonality exists in the monthly rates of return on the New York Stock Exchange with peak periods in January. By making use of this information and the fact that the rates of return ... -
Prestasiemotivering by studente aan die Universiteit van Wes-Kaapland.
(University of the Western Cape, 1991)The major objective of this study was to investigate the nature of the relationship between achievement motivation, autonomous and social achievement values, study habits and attitudes, locus of control and socio-economic ... -
The effect of maternal nicotine exposure on rat lung tissue morphology. ' a light and electron microscopic study
(University of the Western Cape, 1991)The infants of women who smoke during pregnancy have a lower birth mass than those born of women who abstain. Animal studies reveal that reduced growth due to maternal nicotine exposure during gestation is accompanied by ... -
Perceptions of first year Biology students at a college of education towards the relevance of population dynamics as prescribed for current biology syllabusses at matriculation level in South African schools
(University of the Western Cape, 1992)Throughout this research, an attempt has been made to assess the perceived relevance, if any, of the Population Dynamics topic of the standard ten Biology syllabus, especially of those standard ten pupils enrolling as ... -
Investigation of the mechanism of fenfluramine-induced pulmonary phospholipidosis in the rat lung model
(University of the Western Cape, 1993)The aim of this study was to investigate the mechanism of fenfluramine-induced pulmonary phospholipidosis, by comparing the profile and levels of induced phospholipids in the rat and the mode of phospholipase inactivation, ... -
The influence of nicotine exposure on the male reproductive system
(University of the Western Cape, 1993)It is well documented that cigarette smoking and nicotine exposure create widespread physiological disorders in humans and animals. The primary tobacco constituent that is responsible for the toxicological consequences ... -
The effect of diet on the mucus histochemistry and adjacent histology of the digestive tract in Vervet monkeys.
(University of the Western Cape, 1993)There is a need for defined models of human nutritional disorders partly because serious misconceptions about models are common amongst researchers. Historically a large variety of species has been used including primates, ... -
Genetic variation between two subspecies of Reedfrogs in the genus Hyperolius (Anura: Hyperoliidae)
(University of the Western Cape, 1993)The frog genus Hyperolius is the largest of 19 genera in the Hyperoliidae (Channing, 1939). The members of the genus display considerable morphological homogeneity with a diversity of dorsal colour patterns. The genus is ... -
Evaluation of quantitative motility and zona pellucida binding of human spermatozoa in an assisted reproductive programme
(University of the Western Cape, 1994)Male factor disorders affect more than 30% of infertile couples. Thus, it has become important to perform a andrological consultation and a basic semen evaluation in all male partners of couples consulting for infertility. ... -
The effect of maternal nicotine exposure on the quantity and quality of neonatal rat lung connective tissue
(University of the Western Cape, 1994)The infants of smoking mothers (compared to non-smoking mothers) have been shown to have a lower birth mass, a lower brain mass, an increased perinatal mortality rate as well as a predisposition to respiratory abnormalities ... -
A study of the problems and possibilities of using the marine intertidal zone for teaching principles of ecology in senior secondary schools: A survey of biology teachers in the western cape.
(University of the Western Cape, 1994)In this study I investigate the attitudes of a group biology teachers in the Western Cape, to using the marine intertidal zone for teaching principles of ecology in senior secondary schools, by exploring the problems ... -
Cloning and sequence analysis of the gene coding for a Leuconostoe Bacteriocin
(University of the Western Cape, 1994)Previous studies have shown that Leuconostoc (Lc.) carnosum Tal la produces a bacteriocin that has been designated leucocin B-Tal la [Papathanasopoulos, 1993, M.Sc thesis, University of the Witwatersrandl. Leucocin B-Talla ... -
Variances of purity within torsion-free Abelian groups
(University of the Western Cape, 1994)In 1921, Prufer introduced the concept of a pure subgroup of an abelian group. This concept, which is applicable only to abelian groups, proved to be a very useful one. Subsequently, this concept has sparked off numerous ... -
Epidemiological study of Tuberculosis in Macassar camp
(University of the Western Cape, 1995)The aim of this study was to determine and evaluate the prevalence of TB infection, active TB cases and the risk factors associated with TB infection in Macassar Camp in Macassar (about 40 km from Cape Town on the False ... -
An investigation of the production of non-coated sustained release beads by extrusion and Spheronization
(University of the Western Cape, 1995)The popularity and increasing complexity of sustained release dosage forms has resulted in increased costs to the patient. One approach to achieve cheaper, yet effective, sustained release medication is through the ...
