Faculty of Natural Science: Recent submissions
Now showing items 161-180 of 2566
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The relationship between "fertilizaiton environment" and structure and physiology of selected Anuran Spermatozoa
(University of the Western Cape, 1993)The propagation of species and modes of fertilization of higher vertebrates are aspects which have been extensively researched. Studies on the spermatology of lower vertebrates have not received the same attention. Anurans ... -
Exploration of the games of Malepa and Morabaraba in South African secondary school mathematics education
(University of the Western Cape, 2000)This study is based on the Exploration of the Games of Malepa and Morabaraba in South African Secondary School Mathematics Education . It explores culturally specific games through a qualitative research methodology that ... -
Antimicrobial activity of South African red algal secondary metabolites
(UWC, 2001)Infectious diseases, for example, measles, scarlet fever, malaria, tuberculosis, and cholera have claimed many lives. These infections are caused by pathogenic viruses, bacteria, or fungi that invade the body's tissues and ... -
Thermal stability and defect structure of hot-wire deposited amorphous silicon
(UWC, 2004)Hydrogenated amorphous silicon (a-Si:H) thin films are presently used in several large-area thin-film applications. However, one major concern of a-Si:H is the fact that the stability of the material degrades when it is ... -
Ecology and conservation of high altitude amphibians
(UWC, 2002)This study looked at the breeding ecology of the anurans, found in the Landdroskop mountain range in Grabouw, and some recommendations as to their conservation are made. There is very little known about the frogs in South ... -
Circadian activity rhythms and early gene expression in the suprachiasmatic nucleus of a diurnal rodent, Rhabdomys pumilio
(UWC, 2001)Although humans are diurnal in behavior, animal models used for the study of circadian rhythms are mainly restricted to nocturnal rodents. This study focused on circadian behavior and gene expression in a diurnal rodent ... -
Studies of foraminifera associated with gelidium pristoides (turner) keutzing (gelidiales: rhodophyta)
(University of the Western Cape, 2002)Our understanding of the macrofauna of hard intertidal substrata around South Africa is fairly comprehensive, and we have a good understanding of the environmental factors responsible for structuring macrofaunal communities ... -
The determination of excitation functions for natRb+p up to 100 MeV with an emphasis on the production of 82Sr
(UWC, 2000)The radioisotope strontiuur-S2 (T172= 25.55 days) decays to short-lived t"Rb 1T,, = 76 seconds) by l00o/o electron caphue @C). The short-lived t'*Rb decays by g5.SYopositron-ernissiou p* and 4.5%oEC to stable'2Kr. Rubidiurn-82g ... -
Bioinformatics and polymerase chain reaction: Tools to determine the host specificity of Salmonella typhi murium
(University of the Western Cape, 2002)The nucleotide primer pair, Redl and Red2, was designed from the nucleotide sequence obtained from the NCBI database (Fig. 2.1). This nucleotide sequence encodes for the Salmonella typhimurium invasion gene D protein ... -
Student experiences of life science practicals
(UWC, 2001)Science Educationists seem to agree that practical work should form an important component of any science course. Many students arrive at University without having been exposed to any practical work, while others were ... -
Spin and parity assignment in 152gd investigating octupole structures
(University of the Western Cape, 2008)Spin and parity assignment in 152gd investigating octupole structures The high-spin states of the nucleus ls2cd have been populated via the ls2sm (cr, 4n) 152Gd fusion-evaporation reaction at abeam energy of 45MeV. The ... -
Evaluation of satherlandia frutescens for anti.cancer activity
(University of the Western Cape, 2002)The claim for anti-cancer activity of the plant Sutherlandiafrutescens was investigated against some cancer cell lines in-vitro and against a dichlorvos induced chemical carcinogenesis in-vivo. A preliminary phytochemical ... -
In-service female teachers' anxieties about mathematics: a reflective study on mathematics classroom practice at a college of education
(UWC, 1994)The incidence of mathematics anxiety manifesting itself in in-service college students is generally on the increase. Such anxiety does not only affect the mathematical performance of students but also their teaching of the ... -
The development of l-phenylalanine biosensor using boron-doped diamond (bdd) electrode modified with poly aniline-polyvinyl sulphonate composite film
(University of the Western Cape, 2010)The aim of this project was to develop a biosensor on a modified boron-doped diamond (BDD) platform in order to determine L-phenylalanine (L-Phe) levels in the aqueous media and real samples. A BDD electrode modified ... -
The influence of maternal nicotine exposure on neonatal lung development : an enzymatic and metabolic study
(UWC, 1999)Chapter I, the literature review, gives the reader a sound background knowledge of the following: normal lung structural development in humans and rats, metabolic development with reference to structural development, tobacco ... -
The influence of maternal nicotine exposure on neonatal rat trachea development and alveoli status
(University of the Western Cape, 2000)The aim of this study was to determine the effect of maternal nicotine exposure on the status of the rat tracheal development as well as the rat lung of 7 to 42 day old offspring. Wistar dams were injected subcutaneously, ... -
Genetic variation of rana fuscigula in Southern Africa
(University of the Western Cape, 1994)Naturalists have long been engaged in describing and explaining diversity in the biological world. The discovery of the molecular basis of inheritance has led to rapid increase in the use of biological macromolecules in ... -
Long short-term memory recurrent neural networks for signature verification
(UWC, 2003)Handwritten signature verification is defined as the classification process that strives to learn the manner in which an individual makes use of the muscular memory of their hands, fingers, and wrist to reproduce a signature. ... -
"Genetic variation between two subspecies of reedfrogs in the genus Hyperolius (Anura: Hyperoliidae)"
(University of the Western Cape, 1993)H. m. broadleyi and H. m. verrucosus are not only different in terms of colour pattern, but distinct genetic differences were detected in restriction site maps of their ribosomal DNA. A sequence divergence value of 13,8% ... -
Maximal left ideals and idealizers in matrix rings
(University pf Stellenbosch, 1984)In this chapter we supply all the necessary definitions as well as the required results needed in this work. All the notation and terminology will also be explained carefully.