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Studies of the environmental and endocrine control of reproduction in the four striped field mouse, Rhabdomys pumilio

  • Authors: Jackson, Claire
  • Date: 2003
  • Subjects: Microtus Microtus -- South Africa -- Reproduction Mice -- Reproduction
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:5777 , http://hdl.handle.net/10962/d1005465
  • Description: Previous studies of the control of reproduction in Rhabdomys pumilio have shown that day length alone does not inhibit spermatogenesis, that a reduction in food availability and ambient temperature results in an inhibition of gametogenesis, that females are more susceptible to inhibition than are males, and that mice that are able to maintain a body fat store in the face of an energetic challenge, are less likely to show reproductive inhibition than those that lose their fat store. In the present study, field and laboratory experiments were conducted to examine the effects of winter food supplementation on reproduction and population dynamics, and the effects of exogenous GnRH, leptin and mercaptoacetate (MA) on reproductive activity of Rhabdomys pumilio exposed to an energetic challenge. In the field food supplementation experiments in Thomas Baines Nature Reserve (2000, 2001), there was no winter inhibition of reproduction and provision of supplementary food had little effect. While at Mountain Zebra National Park (2002) winter was harsher, females became reproductively inactive, spermatogenesis continued and the provision of extra food resulted in higher rates of individual growth and larger reproductive organs. Treatment of mice that had been exposed to a prolonged energetic challenge, with exogenous GnRH (1µg/mouse/treatment) resulted in an increase in the masses of the testes and epididymides, and in the activity of the reproductive organs. Treatment with exogenous leptin (40µg/mouse/treatment), concurrently with an energetic challenge, countered the negative effects of the energetic challenge, and treated males had larger reproductive organs. MA (600µmol/kg body mass), given concurrently with an energetic challenge, did not inhibit fat metabolism, although the high-fat diet countered the effects of the energetic challenge. Results suggest that the first response of male Rhabdomys pumilio to an energetic challenge is a reduction in the size of the reproductive organs, without an inhibition of spermatogenesis. It is likely that this effect is mediated via white fat and leptin, and leptin’s influence on the hypothalamic-pituitary-gonad axis. Results of the study support the suggestion that females are more sensitive to reproductive inhibition than males and that reproduction in Rhabdomys pumilio is truly opportunistic.
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  • Date Issued: 2003

Study South Africa

  • Authors: International Education Association of South Africa (IEASA) , Mason, Andy
  • Date: 2003
  • Subjects: Education, Higher -- South Africa , Education and globalization -- South Africa Student mobility -- Africa International education -- South Africa Education, Higher -- International cooperation , Universities and colleges -- South Africa , Technical Institutes -- South Africa , Vocational guidance -- South Africa
  • Language: English
  • Type: text , book
  • Identifier: http://hdl.handle.net/10962/65321 , vital:28745 , ISBN 0620247290
  • Description: [Message from the Honorable Minister of Education, Prof. Kader Asmal]: It gives me pleasure to be able to once again give message of support for the Guide to South African Universities and Technikons. Government policy has placed higher education at the centre of the Human Resource Development Strategy. In the last edition I indicated the need to ensure that our system of higher education is relevant, accessible, efficient and provides the basis for lifelong learning. To this end we are embarking on a major transformation and reconstruction process to improve the capacity of our higher education institutions to respond nor only to national demands but also to the demands placed upon us by a globalised economy. TI1e envisaged higher education landscape should be better aligned to respond to the challenges of the constantly changing demands. The realisation of the African Union and the proposals contained in the New Programme for Africa Development calls for greater understanding of the international imperatives that will inform greater economic, political and social cooperation. All of this requires that higher education institutions should step up the pace in forging academic cooperation and linkages as well as providing an enabling environment for international students to study in South Africa. It also requires higher education institutions to ensure that the quality of the programmes offered matches or exceeds international benchmarks so that they become first choice institutions for students wanting an international experience. The initiative that the International Education Association of South Africa (IEASA) has undertaken together with the South African Universities Vice-Chancellors Association and the Committee of Technikon Principals is beginning to show some results. There has been an increase in the number of international students who seek study opportunities in our institutions. This can only strengthen our system as we gain more insight into international perspectives through these students. I wish all those involved in this endeavour success. , 3rd Edition
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  • Date Issued: 2003

Studying the impact of ocean eddies on the ecosystem of the Prince Edward Islands: DEIMEC ll

Symplasmic pathway in phloem loading and unloading in source and sink leaves of Zea mays L. as evidenced under normal and elevated CO₂ conditions

  • Authors: Nogemane, Noluyolo
  • Date: 2003
  • Subjects: Phloem , Plant translocation , Plant cells and tissues , Corn -- Metabolsim
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4254 , http://hdl.handle.net/10962/d1007813
  • Description: Zea mays plants kept at ambient (ca 375ppm) and elevated CO₂ (ca 650 to 700ppm) were used to examine the possibility of a symplasmic loading, unloading and transport pathway in dark-adapted and illuminated (200μmolm⁻²sec⁻¹ ) sink and source leaves. 5,6-carboxyfluorescein diacetate was introduced into the mesophyll cells and symplasmic transfer observed 3h after application. In sink and source leaves exposed to ambient CO₂ and illuminated at 200 molm-2sec-1, the fluorescence front was observed approximately 3cm from the point of application, while in dark-adapted plants, the fluorescence front was observed approximately 1cm from the point of application. Under elevated CO₂ conditions the fluorescence front in illuminated plants appeared to transport faster moving approximately 5cm from the point of application, and in dark-adapted plants, only 3cm from the point of application. Based on the increase in 5,6-CF accumulation under elevated CO₂ conditions, the present study suggests that there was an increase in capacity for assimilate loading and transport under elevated CO₂ conditions. In source leaves, 5,6-CFDA was taken up into the mesophyll cells, loaded symplasmically and transported basipetally. In sink leaves 5,6- CFDA was taken up from basal mesophyll and after symplasmic loading, was transported acropetally where it was offloaded into the younger immature sink region. Transport in the sieve tubes was confirmed by using aniline blue, which was applied 3h after 5,6-CF transport. Aniline blue coupled with 5,6-CF transport studies showed that the sieve tubes of both cross and longitudinal veins are involved in symplasmic unloading, loading and transport processes in sink and source leaves. Apoplasmic uptake of 5,6-CFDA by cut leaves showed that after apoplasmic transport via the transpiration stream, 5,6-CFDA was offioaded to the xylem parenchyma where it was metabolically cleaved , releasing fluorescent 5,6-CF into the xylem parenchyma. Transverse sections cut after 3h of uptake were observed after 120 and 180 min suggesting that a retrieval of solutes occurs from the xylem to the xylem parenchyma, bundle sheath, phloem parenchyma and to the th in-walled sieve tubes. It was not possible to determine if the thick-walled sieve tubes were involved or if they took up 5,6-CF. Given the available data on loading and offioading of assimilates in sink and source leaves respectively, this study demonstrated that a slow symplasmic pathway exists from the mesophyll to the phloem, and that offloading from the phloem in sink leaves can occur via a symplasmic route.
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  • Date Issued: 2003

Synthesis of zinc phthalocyanine derivatives for possible use in photodynamic therapy

  • Authors: Matlaba, Pulane Maseleka
  • Date: 2003
  • Subjects: Photochemotherapy , Electrochemistry , Phthalocyanines , Zinc
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4374 , http://hdl.handle.net/10962/d1005039 , Photochemotherapy , Electrochemistry , Phthalocyanines , Zinc
  • Description: The synthesis of symmetrically and unsymmetrically substituted zinc phthalocyanines (ZnPc) derivatives is done according to reported procedures. The unsymmetrical ZnPc derivatives are synthesized by ring expansion of sub-phthalocyanine complexes. Ring substitution is effected with tert-butyl phenol, naphthol, and hydroxybenzoic acid. Comparison of the redox potentials for the complexes substituted with varying numbers of tert-butyl phenol: 1, 2, 3, 6 and 8 show that the complex with the highest number of substituents are more difficult to oxidize and easier to reduce. Water soluble sulphonated ZnPc (ZnPcSn) was prepared. The possibility of using axial ligation to increase the solubility and the photochemical activity of sulphotnated ZnPc in aqueous solutions was investigated. Pyridine, aminopyridyl and bipyridyl were used as axial ligands. When bipyridyl was used as the axial ligand, solubility of the ZnPcSn increased, shown by the increase in the Q-band of the monomer species in solution and the singlet oxygen quantum yields was relatively higher than that of the unligated ZnPcSn. The singlet oxygen quantum yields by the various complexes in DMF using diphenylisobenzofuran as a chemical quencher for organic solvent were determined. Singlet oxygen quantum yields for the unsymmetrically ring substituted complexes range from 0.22 to 0.68. Photobleaching quantum yields are in the order of 10-5, which means that the complexes are relatively photostable.
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  • Date Issued: 2003

Synthesis, spectral and electrochemical properties of a new family of pyrrole substituted cobalt, iron, manganese, nickel and zinc phthalocyanine complexes

  • Authors: Obirai, Joe , Rodrigues, Nazaré Pereira , Bedioui, Fethi , Nyokong, Tebello
  • Date: 2003
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/304852 , vital:58496 , xlink:href="https://0-doi.org.wam.seals.ac.za/10.1142/S1088424603000641"
  • Description: A new family of pyrrole substituted metallophthalocyanine complexes, namely cobalt(II), iron(II), manganese(III), nickel(II) and zinc(II) tetrakis-4-(pyrrol-1-yl)phenoxy phthalocyanines (noted as M(TPhPyrPc), where M is the metallic cation) have been synthesized and fully characterized. In particular, the UV-visible spectra of the iron and nickel complexes showed extensive aggregation even at low concentrations. The cyclic voltammetry of the cobalt, iron and manganese complexes showed three to four redox couples assigned to metal and ring based processes. Spectroelectrochemistry of the manganese derivative confirmed that the synthesized complex is MnIII(TPhPyrPc-2) and that the reduction of MnII(TPhPyrPc-2) to be centred on the ring and rather than on the metal, forming the MnII(TPhPyrPc-4) species. Also, the electrochemical polymerization of these newly synthesized pyrrole-substituted phthalocyanines has been demonstrated in the case of the cobalt complex and the electrocatalytic activity of the obtained film has been tested towards the oxidation of L-cysteine.
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  • Date Issued: 2003

Synthesis, spectroscopy and photochemistry of octasubstituted thiol-derivatized phthalocyaninatozinc (II) complexes

  • Authors: Ozoemena, Kenneth I , Nyokong, Tebello
  • Date: 2003
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/290401 , vital:56746 , xlink:href="https://doi.org/10.1016/S1387-7003(03)00218-1"
  • Description: Synthesis, spectroscopic and photochemical characterization of phenylthiol-derivatized zinc phthalocyanine complex: 2,3,9,10,16,17,23,24-octa(4-methylphenylthio-)phthalocyaninatozinc(II) [ZnPc(SC6H4CH3)8] (3a) and its alkanethiol derivative, 2,3,9,10,16,17,23,24-octabutylthiophthalocyaninatozinc(II) [ZnPc(SC4H9)8] (3b) are described. Spectroscopic analyses show that 3a has a higher aggregation tendency than 3b in organic solvents. Photochemical studies indicate that 3b is more photostable and more efficient at singlet oxygen generation than 3a.
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  • Date Issued: 2003

Technology auditing as a means of ensuring business continuity in a manufacturing organisation

  • Authors: Vlok, Nico
  • Date: 2003
  • Subjects: Technology -- Management , Manufacturing industries -- Technological innovations -- Auditing , Technology -- Auditing
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:10880 , http://hdl.handle.net/10948/264 , Technology -- Management , Manufacturing industries -- Technological innovations -- Auditing , Technology -- Auditing
  • Description: Successful organisations have a well-defined mission and a strategy for accomplishing that mission. The organisation strategy involves the building of a competitive advantage in a defined market. Activities are oriented around this business strategy. When utilised effectively, technology is a powerful instrument for enhancing the organisation’s competitiveness. Technology management is the application of managerial techniques most suitable for ensuring that the technological factor is exploited for achievement of an organisation's goals. It is critical to correctly implement appropriate practices related to technology and innovation management at organisational level. Most organisations are technology intensive and deliver products or services. The research investigates, through the use of technology auditing, the present and future technology needs of the organisation. It also tried to establish the impact of technology auditing on the competitive advantage of the organisation. The research attempts to set a strategic context for the array of tools, technologies and standards emerging to support the organisation. The research analysed the potential of technology auditing to facilitate a dynamic scale of economy where the organisations take on the tasks of managing its technology. Basic theoretical principles of a technological audit were applied when the researcher conducted the technology audit. Because there is no organisation that is an exact replica of another, a technology audit must be custom made for the specific organisation where it is conducted. A micro business, MP Engineering, in the Port Elizabeth Metropole was chosen to conduct the technology audit at for the purpose of this research project. The research results confirmed the literature currently available.
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  • Date Issued: 2003

Teenage pregnancy and the construction of adolescence : scientific literature in South Africa

  • Authors: Macleod, Catriona I
  • Date: 2003
  • Language: English
  • Type: Article
  • Identifier: vital:6258 , http://hdl.handle.net/10962/d1007876 , http://journals.sagepub.com/doi/10.1177/0907568203104003
  • Description: The depiction of teenage pregnancy as a social problem relies on the assumption of adolescence as a separable stage of development. Utilising a Derridian framework, I analyse how the dominant construction of adolescence as a transitional stage: (1) acts as an attempt to decide the undecidable (viz. the adolescent who is neither child nor adult, but simultaneously both) – an attempt which collapses in the face of teenage pregnancy; (2) relies on the ideal adult as the endpoint of development, and (3) has effects in terms of gendered and expert/parent/adolescent power relations.
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  • Date Issued: 2003

The anorexic mask : a case study of a patient with co-morbid nervosa and factitious disorder?

  • Authors: Gaylard, Jeanne
  • Date: 2003
  • Subjects: Anorexia nervosa Anorexia nervosa -- Case studies Factitious disorders Factitious disorders -- Case studies
  • Language: English
  • Type: Thesis , Masters , MSocSc
  • Identifier: vital:3105 , http://hdl.handle.net/10962/d1004511
  • Description: This study is a case-study of a patient who was diagnosed as having co-morbid Anorexia Nervosa and Factitious Disorder. It would appear that central to an understanding of both of these disorders is the patient's disturbed relationship to her own body. The existing literature on co-morbid Factitious Disorder and Anorexia Nervosa is rare, with only three cases published. A careful reading of these cases suggests that in all of these cases, Factitious Disorder may have been the primary diagnosis. In this case there was as overidentification with the patient role, and the patient's anorexic symptoms appeared to serve the function of meeting the patient's acute dependency needs. Thus, the patient's Anorexia Nervosa masked the Factitious Disorder and appeared to be secondary to the Factitious Disorder. It is argued that these disorders share several common dynamics, namely the inability to separate from the mother, high parental expectations as well as the use of the body as a transitional or pre-cursor object. In addition there are some common dynamics in the psychotherapy of these patients. All of these factors suggest that in both these disorders the developmental arrest may be located at a pre-verbal level.
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  • Date Issued: 2003

The application of the hearsay rule in labour law proceedings

  • Authors: Hanekom, Jurgens Philip
  • Date: 2003
  • Subjects: Labor courts -- South Africa , Evidence, Hearsay -- South Africa , Evidence (Law) -- South Africa , Labor laws and legislation -- South Africa
  • Language: English
  • Type: Thesis , Masters , LLM
  • Identifier: vital:11053 , http://hdl.handle.net/10948/300 , Labor courts -- South Africa , Evidence, Hearsay -- South Africa , Evidence (Law) -- South Africa , Labor laws and legislation -- South Africa
  • Description: To know your law and not to understand it is like a legal barbarian lost in the battlefield of legal theory. A proper and thorough understanding of the law of evidence and hearsay evidence in particular, is of paramount importance not only for lawyers but also for persons who regard themselves as labour law experts. It takes a great deal of experience before a lawyer truly becomes confident with the law of evidence and its application. The only way one becomes good at it is firstly to know the law. (Where does it come from and why is it there?) Then one must get to understand it by looking at examples and apply it in practice. Only then will a person gain practical experience. The aim of this treatise is not to try and educate experienced lawyers. This article is aimed at those that need some motivation to pursue their journey in the labour law process. Remember we all assume that lawyers know and understand their subject until they proof the contrary. In this work I shall try to highlight the importance of the law of evidence in labour law proceedings. Firstly the meaning of the law of evidence and hearsay evidence is considered. Further emphasis will be on the approach and application of the law of evidence, and in particular the hearsay rule, in labour law proceedings.
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  • Date Issued: 2003

The bioaccumulation of platinum (IV) from aqueous solution using sulphate reducing bacteria: role of a hydrogenase enzyme

  • Authors: Rashamuse, Konanani Justice
  • Date: 2003
  • Subjects: Sulfur bacteria , Bioremediation , Enzymes -- Metabolism , Platinum , Platinum compounds , Reduction (Chemistry) , Hydrogenation
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4003 , http://hdl.handle.net/10962/d1004063 , Sulfur bacteria , Bioremediation , Enzymes -- Metabolism , Platinum , Platinum compounds , Reduction (Chemistry) , Hydrogenation
  • Description: The enzymatic reduction of a high-valence form of metals to a low-valence reduced form has been proposed as a strategy to treat water contaminated with a range of metals and radionuclides. Metal reduction by sulphate reducing bacteria (SRB) is carried out either chemically (involving reduction by hydrogen sulphide) or enzymatically (involving redox enzymes such as the hydrogenases). While reduction of metal ions by hydrogen sulphide is well known, the enzymatic mechanism for metal reduction is poorly understood. The aims of this study were to investigate the role of SRB in facilitating platinum removal, and to investigate the role of a hydrogenase in platinum reduction in vitro. In order to avoid precipitation of platinum as platinum sulphide, a resting (non-growing) mixed SRB culture was used. The maximum initial concentration of platinum (IV), which SRB can effectively remove from solution was shown to be 50 mg.l⁻¹. Electron donor studies showed high platinum (IV) uptake in the presence of hydrogen, suggesting that platinum (IV) uptake from solution by SRB requires careful optimization with respect to the correct electron donor. Transmission electron microscopy (TEM) and energy dispersive X-ray (EDX) analysis indicated that platinum was being precipitated in the periplasm, a major area of hydrogenase activity in SRB. Purification of the hydrogenase by ammonium sulphate precipitation (65%), Toyopearl-Super Q 650S ion exchange and Sephacry 1 S-100 size exclusion chromatography revealed that the hydrogenase was monomeric with a molecular weight of 58 KDa, when analyzed by 12% SDS-PAGE. The purified hydrogenase showed optimal temperature and pH at 35°C and 7.5 respectively, and a poor thermal stability. In vitro investigation of platinum reduction by purified hydrogenase from mixed SRB culture showed that hydrogenase reduces platinum only in the presence of hydrogen. Major platinum (IV) reduction was observed when hydrogenase was incubated with cytochrome C₃ (physiological electron carrier in vivo) under hydrogen. The same observations were also noted with industrial effluent. Collectively these findings suggest that in vitro platinum reduction is mediated by hydrogenase with a concerted action of cytochrome C₃ required to shuttle the electron from hydrogenase.
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  • Date Issued: 2003

The biogeography of the Prosopistomatidae, with a particular emphasis on Southern African species

  • Authors: Barber-James, Helen M
  • Date: 2003
  • Language: English
  • Type: Conference paper
  • Identifier: vital:6998 , http://hdl.handle.net/10962/d1008378
  • Description: The mayfly family Prosopistomatidae consists of the single genus Prosopistoma Latreille. Its known distribution includes species from Africa, Madagascar, the Comores, Europe, the Levant, India, Sri Lanka, China, Vietnam, the Philippines, Malaysia, Sumatra, Java, the Solomon Islands, Papua New Guinea and northern Australia. A tropical Gondwanaland origin of the family has been suggested. No species are currently known from the Neotropical or Nearctic regions, though the family may yet be discovered in northeastern South America, since this region separated from West Africa only c.120 mya. Focussing on southern Africa, several undescribed species have recently been discovered, with interesting implications to the biogeography on a more localised scale. In the western Cape, a prosopistomatid species has been collected in the Olifants River, extending the distribution of this family further south into a more temperate region. Geological evidence indicates that the Olifants River was connected to the Orange River during the Tertiary period. Prosopistomatidae are known from the Orange River today, and the presence of the family in the Olifants River in the western Cape supports the geological evidence of the historical link between these two rivers. Another unexpected discovery was from the Buffalo River in the eastern Cape, at 33ºS. A subtropical zone extends along the east coast of South Africa as a result of the warm Agulhas current offshore, allowing the southerly extension of the distribution of more tropical species. , Research Update on Ephemeroptera & Plecoptera: Proceedings of the Tenth International Conference on Ephemeroptera, 8-11 August 2001, Perugia, Italy. University of Perugia, Perugia, Italy, pp. 263-270.
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  • Date Issued: 2003

The Boers and the Anglo-Boer War (1899-1902) in the twentieth-century moral imaginary

  • Authors: van Wyk Smith, Malvern
  • Date: 2003
  • Language: English
  • Type: Article
  • Identifier: vital:6120 , http://hdl.handle.net/10962/d1004700
  • Description: In 1891 Lord Randolph Churchill, father of the more famous Winston, visited South Africa and the soon-to-be Rhodesia on a trip that was intended to combine big-game hunting with the even more exciting prospects of entering the gold mining business. During the eight months of the visit, Churchill contributed a series of letters to the Daily Graphic on his thoughts and experiences, in one of which he had this to say about the Boers: The Boer farmer personifies useless idleness. Occupying a farm of from six thousand to ten thousand acres, he contents himself with raising a herd of a few hundred head of cattle, which are left almost entirely to the care of the natives whom he employs. It may be asserted, generally with truth, that he never plants a tree, never digs a well, never makes a road, never grows a blade of corn…. He passes his day doing absolutely nothing beyond smoking and drinking coffee. He is perfectly uneducated. With the exception of the Bible, every word of which in its most literal interpretation he believes with fanatical credulity, he never opens a book, he never even reads a newspaper. His simple ignorance is unfathomable, and this in stolid composure he shares with his wife, his sons, his daughters, being proud that his children should grow up as ignorant, as uncultivated, as hopelessly unprogressive as himself. In the winter time he moves with his herd of cattle into the better pastures and milder climate of the low country veldt, and lives as idly and uselessly in his waggon as he does in his farmhouse. The summer sees him returning home, and so on [sic], year after year, generation after generation, the Boer farmer drags out the most ignoble existence ever experienced by a race with any pretensions to civilization. (94–95) The piece caused an outcry, and when a year later Churchill republished the letters as Men, Mines and Animals in South Africa (1892), he attempted to exonerate himself by claiming that these views were intended “to be exclusively confined to…the Dutch population of the Transvaal,” not “generally to the Dutch in South Africa” and went on: “The Dutch settlers in Cape Colony are as worthy of praise as their relatives, the Transvaal Boers, are of blame. The former, loyal, thrifty, industrious, hospitable, liberal are and will, I trust, remain the back-bone of our great colony at the Cape of Good Hope”
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  • Date Issued: 2003

The challenges of managing HIV/AIDS counsellors in a rural district in the Eastern Cape, South Africa

  • Authors: Gerber, Barbara
  • Date: 2003
  • Subjects: AIDS (Disease) -- Patients -- Counseling of -- South Africa -- Eastern Cape HIV-positive persons -- Counseling of -- South Africa -- Eastern Cape Counselors -- Supervision of -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MSocSc
  • Identifier: vital:3171 , http://hdl.handle.net/10962/d1007799
  • Description: The pandemic of HIV/AIDS has challenged several aspects of contemporary social life. HIV/AIDS counselling has developed as a social response to provide support for those infected with the disease. Due to the nature and complexity of the disease, HIV/AIDS counsellors encounter a diversity and intensity of emotions when counselling. A support system that includes effective management and supervision may assist in resolving emotions and reactions that HIV/AIDS counsellors may experience as a result of working with HIV/AIDS clients. This study examines the difficulties that both managers and the HIV/AIDS counsellors at a rural district hospital in the Eastern Cape and its surrounding clinics are faced with, in providing the HIV/AIDS counsellors with the support they need. Engestrom's (1987) model of activity theory was used as a conceptual framework guiding both the analysis and interpretation of the data. This model facilitates the identification of tensions and contradictions thereby opening a space for change and transformation within an activity system. Multiple sources of data collection were used that included focus groups with managers and HIV/AIDS counsellors, interviews with senior hospital staff and an official from the Department of Health, Eastern Cape, and a tour of the rural district hospital. The findings suggest that HIV/AIDS counsellors do not feel supported by their managers. Managers in turn are of the opinion that they do not offer the support the HIV/AIDS counsellors' need. The lack of support is attributed to geographic distances between hospitals and the clinics they serve, lack of available transport and the multiplicity of roles of both managers and the HIV/AIDS counsellors. The pandemic of HIV/AIDS has challenged several aspects of contemporary social life. HIV/AIDS counselling has developed as a social response to provide support for those infected with the disease. Due to the nature and complexity of the disease, HIV/AIDS counsellors encounter a diversity and intensity of emotions when counselling. A support system that includes effective management and supervision may assist in resolving emotions and reactions that HIV/AIDS counsellors may experience as a result of working with HIV/AIDS clients. This study examines the difficulties that both managers and the HIV/AIDS counsellors at a rural district hospital in the Eastern Cape and its surrounding clinics are faced with, in providing the HIV/AIDS counsellors with the support they need. Engestrom's (1987) model of activity theory was used as a conceptual framework guiding both the analysis and interpretation of the data. This model facilitates the identification of tensions and contradictions thereby opening a space for change and transformation within an activity system. Multiple sources of data collection were used that included focus groups with managers and HIV/AIDS counsellors, interviews with senior hospital staff and an official from the Department of Health, Eastern Cape, and a tour of the rural district hospital. The findings suggest that HIV/AIDS counsellors do not feel supported by their managers. Managers in turn are of the opinion that they do not offer the support the HIV/AIDS counsellors' need. The lack of support is attributed to geographic distances between hospitals and the clinics they serve, lack of available transport and the multiplicity of roles of both managers and the HIV/AIDS counsellors. Recommendations include the introduction of self-supervision , peer groupsupervision for HIV/AIDS counsellors.
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  • Date Issued: 2003

The comparative case study of the use of English and isiXhosa as medium of instruction in a grade five class

  • Authors: Mngqibisa, Mandla Daniel
  • Date: 2003
  • Subjects: English language -- Study and teaching (Elementary) -- South Africa Xhosa language -- Study and teaching (Elementary) -- South Africa Education, Bilingual Language and education -- South Africa Language policy -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1455 , http://hdl.handle.net/10962/d1003336
  • Description: The aim of this study was to compare the quality of oral interaction between a grade 5class and their teacher when either English or isiXhosa was used as medium ofinstruction in two different lessons and of their writing which arose out of the lessons. The research was carried out within the interpretive paradigm and took the form of a casestudy. The researcher took the stance of being a non-participant observer. A variety oftechniques were used to collect data, namely, piloting, video recording and transcribing lessons, observing and making field notes, questionnaires and an interview. The interview was recorded and transcribed by the researcher. The two lessons were transcribed and analysed. Also the learners’ writing was analysed. The findings of this study showed that learners have little competence in English compared to isiXhosa. As a result most of them used short and vague sentences when responding to and discussing pictures in English. They also used short and simple sentences when writing in English compared toisiXhosa. Although this is a small-scale study it is recommended that the school’s language policy is revised and teachers are equipped with necessary skills, which would help them teach English to second language learners effectively. It is also recommended that the learners’ first language continue to be well taught even if it is no longer the classroom language.
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  • Date Issued: 2003

The concentrations of the noble metals in Southern African flood-type basalts and MORB: implications for petrogenesis and magmatic sulphide exploration

  • Authors: Maier, Wolfgand D , Barnes, Sarah-Jane , Marsh, Julian S
  • Date: 2003
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/150573 , vital:38985 , https://doi.org/10.1007/s00410-003-0480-z
  • Description: Concentrations of the platinum-group elements have been determined in several suites of southern African flood-type basalts and mid-ocean ridge basalt (MORB), covering some 3 Ga of geologic evolution and including the Etendeka, Karoo, Soutpansberg, Machadodorp, Hekpoort, Ventersdorp and Dominion magmas.
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  • Date Issued: 2003

The conjugalisation of reproduction in South African teenage pregnancy literature

  • Authors: Macleod, Catriona I
  • Date: 2003
  • Language: English
  • Type: Article
  • Identifier: vital:6266 , http://hdl.handle.net/10962/d1008265 , https://orcid.org/0000-0003-0992-3525
  • Description: The “conjugalisation of reproduction”, in which childbearing is legitimated only within a marital alliance, underlies some of the pathologisation of the single, female-headed household in the pre-democracy South African teenage pregnancy literature. I utilise a poststructural feminist framework that draws on elements of Derrida’s and Foucault’s work to analyse the conjugalisation of reproduction in South African research. The conjugalisation of reproduction relies on (1) the insidious “unwed” signifier which interpenetrates the term “teenage pregnancy”, allowing the scientific censure of non-marital adolescent re-production without the invocation of moralisation, and (2) the fixation of the husband-wife and parents-children axes of alliance as the main elements for the deployment of sexuality and reproduction in the form of the family. Pregnant teenagers are, in Derridean terms, undecidables: they are neither children (owing to their reproductive status) nor adults (owing to their age), but simultaneously both. Marriage is the authority that decides them, allowing them to join the ranks of adult reproductive subjects.
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  • Date Issued: 2003

The constitutional right to legal representation during disciplinary hearings and proceedings before the CCMA

  • Authors: Buchner, Jacques Johan
  • Date: 2003
  • Subjects: Right to counsel -- South Africa , Dispute resolution (Law) -- South Africa , Labor laws and legislation -- South Africa , South Africa. Commission for Conciliation, Mediation and Arbitration
  • Language: English
  • Type: Thesis , Masters , LLM
  • Identifier: vital:11052 , http://hdl.handle.net/10948/294 , Right to counsel -- South Africa , Dispute resolution (Law) -- South Africa , Labor laws and legislation -- South Africa , South Africa. Commission for Conciliation, Mediation and Arbitration
  • Description: The right to legal representation at labour proceedings of an administrative or quasi-judicial nature is not clear in our law, and has been the subject of contradictory debate in the South African courts since the1920’s. Despite the ambiguities and uncertainty in the South African common law, the statutory regulation of legal representation was not comprehensively captured in labour legislation resulting in even more debate, especially as to the right to be represented by a person of choice at these proceedings in terms of the relevant entrenched protections contained in the Bill of Rights. The Labour Relations Act 12 of 2002 (prior to amendment) is silent on the right to representation at in-house disciplinary proceedings. Section 135(4) of Act 12 of 2002 allows for a party at conciliation proceedings to appear in person or to be represented by a director or co employee or a member or office bearer or official of that party’s registered trade union. Section 138(4) of the same Act allows for legal representation at arbitration proceedings, but subject to section 140(1) which excludes legal representation involving dismissals for reasons related to conduct or capacity, unless all parties and the commissioner consent, or if the commissioner allows it per guided discretion to achieve or promote reasonableness and fairness. The abovementioned three sections were however repealed by the amendments of the Labour Relations Act 12 of 2002. Despite the repealing provision, Item 27 of Schedule 7 of the Amendment reads that the repealed provisions should remain in force pending promulgation of specific rules in terms of section 115(2A)(m) by the CCMA. These rules have not been promulgated to date. The common law’s view on legal representation as a compulsory consideration in terms of section 39 of the Constitution 108 of 1996 and further a guidance to the entitlement to legal representation where legislation is silent. The common law seems to be clear that there is no general right to legal representation at administrative and quasi judicial proceedings. If the contractual relationship is silent on representation it may be permitted if exceptional circumstances exist, vouching such inclusion. Such circumstances may include the complex nature of the issues in dispute and the seriousness of the imposable penalty ( for example dismissal or criminal sanction). Some authority ruled that the principles of natural justice supercede a contractual condition to the contrary which may exist between employer and employee. The courts did however emphasize the importance and weight of the contractual relationship between the parties in governing the extent of representation at these proceedings. Since 1994 the entrenched Bill of Rights added another dimension to the interpretation of rights as the supreme law of the country. On the topic of legal representation and within the ambit of the limitation clause, three constitutionally entrenched rights had to be considered. The first is the right to a fair trial, including the right to be represented by a practitioner of your choice. Authority reached consensus that this right, contained in section 35 of the Constitution Act 108 of 1996 is restricted to accused persons charged in a criminal trial. The second protection is the entitlement to administrative procedure which is justifiable and fair (This extent of this right is governed y the provisions of the Promotion of Access to Administrative Justice Act 3 of 2000) and thirdly the right to equality before the law and equal protection by the law. In conclusion, the Constitution Act 108 of 1996 upholds the law of general application, if free and justifiable. Within this context, the Labour Relations Act 66 of 1995 allows for specific representation at selected fora, and the common law governs legal representation post 1994 within the framework of the Constitution. The ultimate test in considering the entitlement to legal representation at administrative and quasi judicial proceedings will be in balancing the protection of the principle that these tribunals are masters of their own procedure, and that they may unilaterally dictate the inclusion or exclusion of representation at these proceedings and the extent of same, as well as the view of over judicialation of process by the technical and delaying tactics of legal practitioners, against the wide protections of natural justice and entrenched constitutional protections.
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  • Date Issued: 2003

The construction of masculinities: male university students' talk about women and heterosexual relationships

  • Authors: Minnaar, Benita
  • Date: 2003
  • Subjects: Masculinity , Men -- Identity , Men -- South Africa , Men -- Conduct of life , Discourse analysis , Heterosexuality -- South Africa
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3020 , http://hdl.handle.net/10962/d1002529 , Masculinity , Men -- Identity , Men -- South Africa , Men -- Conduct of life , Discourse analysis , Heterosexuality -- South Africa
  • Description: This article examines the talk of male Psychology students about women and heterosexual relationships in all-male discussion groups. Four vignettes depicting difficult situations in heterosexual relationships were used to initiate discussion. Eight men attending a historically black university participated in the group discussions, which were facilitated by a male postgraduate Psychology student. The study explored masculine identity construction by identifying interpretive repertoires deployed by respondents to construct and account for themselves and their social worlds, within the context of discussions about relationships with women. Three interpretive repertoires of masculinity: the male-as- breadwinner/provider, male-as-protector and the "New Man" repertoire were identified. The complex and contradictory nature of masculine identity construction is highlighted. Drawing on the work of Hollway (1984), two discourses of heterosexuality were also identified: the have/hold discourse and the permissive discourse. The invocation of the "New Man" repertoire and pro-feminist discourses of heterosexuality in the men's talk may signify a move towards more enlightened and less oppressive constructions of masculinity, heterosexuality and gender.
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  • Date Issued: 2003
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