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Asthenospheric and lithospheric sources for Mesozoic dolerites from Liberia (Africa): trace element and isotopic evidence

- Dupuy, C, Marsh, Julian S, Dostal, J, Michard, A, Testa, S

  • Authors: Dupuy, C , Marsh, Julian S , Dostal, J , Michard, A , Testa, S
  • Date: 2002
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/140422 , vital:37887 , https://doi.org/10.1016/0012-821X(88)90067-2
  • Description: Combined elemental, and Sr and Nd isotopic data are presented for Mesozoic dolerite dikes of Liberia (Africa) which are related to the initial stage of opening of the Atlantic Ocean.
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  • Date Issued: 2002

Pomacanthus Rhomboides (Gilchrist and Thompson), the valid name for the South African Angelfish previously known as Pomacanthus Striatus

- Randall, John E, 1924-, J.L.B. Smith Institute of Ichthyology

  • Authors: Randall, John E, 1924- , J.L.B. Smith Institute of Ichthyology
  • Date: 1988-12
  • Subjects: Marine angelfishes -- South Africa -- Nomenclature
  • Language: English
  • Type: text , book
  • Identifier: http://hdl.handle.net/10962/70291 , vital:29642 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
  • Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 46 , The Indian Ocean angelfish from southern Africa heretofore identified as Pomacanthus striatus (Riippell, 1836) is Pomacanthus rhomboides (Gilchrist and Thompson, 1908). P. striatus is shown to be the young of P. maculosus (Forsskål, 1775) which is not known from South Africa; it occurs in the Red Sea, Persian Gulf, and along the East African coast to at least 13°S. Holacanthus coeruleus Cuvier, described from a juvenile specimen from the Red Sea, is a junior synonym of Pomacanthus asfur (Forsskål), not P. semicirculatus (Cuvier), thus casting doubt on the record of the letter from the Red Sea.
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  • Date Issued: 1988-12

!Hui ten ga

- Jongmoederkring Choir, Composer not specified, Dargie, Dave

!Khutse Gaosisen

- Composition Workshop Choir, Composer Not Specified, Dargie, Dave

!Khutse u loa sida di guibasa

- Music Workshop Group, Composer Not Specified, Ganes, Annamarta, Dargie, Dave

!Nobatere ti oas oa u

- Music Workshop Group, Composer Not Specified, Ganes, Annamarta, Dargie, Dave

'n Dekonstruksie van 'n teks uit Die ongedanste dans van Breyten Breytenbach

- Vorster, Anton Ferreira

  • Authors: Vorster, Anton Ferreira
  • Date: 1988
  • Subjects: Breytenbach, Breyten -- Criticism and interpretation
  • Language: Afrikaans
  • Type: Thesis , Masters , MA
  • Identifier: vital:3572 , http://hdl.handle.net/10962/d1002095 , Breytenbach, Breyten -- Criticism and interpretation
  • Description: The thesis provides an interpretation of the poem ʺ(Taalstryd)ʺ (Lewendood, p.143) by employing deconstruction theory, particularly as it has been developed by Jacques Derrida. The main assumption is that the text is not a self-sufficient entity, but finds itself in a continually changing relationship with other texts, a relationship described by deconstructionists as intertextuality. This relationship, as it has been described by Julia Kristeva, does not only involve literary works, but also the world-as- text. In chapter one this point of view is illustrated in a discussion around the title of the poem. It is postulated that the title is not a neutral description of a period in the history of the development of the Afrikaans language. Rather, it represents an ideological concept which can be interpreted in various ways. The poem clearly lends itself to an interpretation of "the struggle for the Taal" as a struggle which has manifested itself in many different areas and historical periods within the South African context. In chapter two the discussion of the relationship between language, history and ideology is continued. It is shown how the ʺofficialʺ history represents a one-sided view of Afrikaans as a ʺEuropeanʺ language, greatly ignoring its African component. This representation relies on a logocentric approach to the relationship between language and writing. Breytenbach's poetry, like the writings of Derrida, can be regarded as a "deconstruction" of this approach. The ʺdisseminationʺ of meaning in ʺ(Taalstryd)ʺ is illustrated in terms of the poem's intertextual relationship with Breytenbachʾs ʺPlease don't feed the animalsʺ and Krigeʾs ʺLied van die Fascistiese bomwerpersʺ. Chapter three sets ʺ(Taalstryd)ʺ within the current debate surrounding Afrikaner survival. It is shown how the Afrikaner power base has been established and strengthened by way of legislation, the system of Christian National Education, as well as the creation of a nationalist-orientated history. This power base is currently in a state of crisis, in which different political groupings are continuing the ʺ(Taalstryd)ʺ
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  • Date Issued: 1988

A comparison of the self-esteem of black and white high school pupils

- Morrow, Brian Robert

  • Authors: Morrow, Brian Robert
  • Date: 1988
  • Subjects: Uncatalogued
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/193033 , vital:45292
  • Description: This study investigated the level of self-esteem of black and white high-school students using the Rosenberg self-esteem scale. One hundred and eighty six subjects were used, 63 of them being white while 118 were black. A validation of the Rosenberg scale for the black sample was attempted using a correlation between the scale score and a rating of the subjects by teachers. The results of the study showed no significant difference between the self-esteem levels, while the validation study failed to confirm the validity of the test for black subjects in South Africa. However, the validation study v/as rejected as inconclusive and the results of the comparison accepted as confirmatory of previous research. An incidental positive finding revealed that white males have higher self-esteem than white females,. The theory and past research of self-esteem comparisons between racial groups is reviewed. The conclusion is reached in this study that the concept of self-esteem has outlasted its usefulness in the field of comparisons between racial groups and research of a qualitative nature .can provide further data for the understanding of differences between racial groups. , Thesis (MA) -- Faculty of Humanities, Psychology, 1988
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  • Date Issued: 1988

A contribution towards an understanding of the intensive tank culture of an ornamental Cichlid, Aulonocara Baenschi, from Chipoka, Lake Malawi

- Impson, N D (Neville Dean)

  • Authors: Impson, N D (Neville Dean)
  • Date: 1988
  • Subjects: Cichlids -- Nysas, Lake , Cichlids -- Nyasa, Lake -- Physiology
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5208 , http://hdl.handle.net/10962/d1004596 , Cichlids -- Nysas, Lake , Cichlids -- Nyasa, Lake -- Physiology
  • Description: The intensive tank culture of ornamental mouthbrooding cichlids poses several problems which limit their aquaculture potential. This project addressed some of these problems for Aulonocara baenschi. The production of juveniles in 2501 aquaria was accelerated when: a) aquaria were equipped with refuges, b) females of less than 70mm in standard length were used as broodstock, c) mouthbrooding females were replaced with gravid females at seven day intervals, and d) embryos were removed from the mouths of females at replacement times for artificial incubation. Two sex ratios also accelerated juvenile production. The sex ratio (male:females) 1:30 yielded the highest spawning returns per tank, and therefore represented the most effective utilization of aquarium space (a critical consideration for the small-scale culturist). Contrastingly, the sex ratio 1:12 yielded the highest clutch sizes and a high percentage female spawning return, and therefore represented the most effective utilization of broodstock (an important consideration for culturists inhibited by financial constraints or having an abundance of culture vessels). The reproductive behaviour of A. baenschi was described. Emphasis was given to aspects of reproduction of relevance to culture, for example; spawning times and seasons, clutch size and its relationship with female size, age and size of sexes at first spawning, embryo development rate and size of first swimming juveniles. The slow growth rate of juveniles, combined with a late attainment of marketable size (± seven months) was a major limitation affecting the cuIture potential of A. baenschi. Two factors favouring the cuIture of this species was the high survival rate recorded for both adults and juveniles, and the comparatively high prices fetched by fish on domestic wholesale markets (R4,00 per fish). It is recommended that A. baenschi should not be cultured exclusively for the relatively small South African ornamental fish market. A more profitable strategy for domestic culturists should involve a major production effort with A. baenschi and other desirable species of Aulonocara (e.g . A. ethelwynnae; A. hansbaenschi; A. stuartgranti & A. maylandi) for foreign markets (in particular, the U.S.A.; Western Europe & Japan). Not only are these markets massive, but prevailing exchange rates of the Rand with these currencies favour such a strategy.
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  • Date Issued: 1988

A da gaia gaore

- Music Workshop Group, Composer Not Specified, Ganes, Annamarta, Dargie, Dave

A dance song

- Nyangana Mission Choir, Dikuwa, Edmund, Tracey, Andrew T N

A laterally extensive geochemical discontinuity in the subcontinental Gondwana Lithosphere

- Erlank, Anthony J, Duncan, Andrew R, Marsh, Julian S, Sweeney, R J, Hawkesworth, C J, Milner, Simon C, Miller, R McG, Rogers, N W

  • Authors: Erlank, Anthony J , Duncan, Andrew R , Marsh, Julian S , Sweeney, R J , Hawkesworth, C J , Milner, Simon C , Miller, R McG , Rogers, N W
  • Date: 1988
  • Language: English
  • Type: text , abstracts
  • Identifier: http://hdl.handle.net/10962/131678 , vital:36710
  • Description: Cox et al. (1967) first delineated the existence of two major geochemical provinces in the Karoo basalts of southern Africa. Tholeiitic basalts in Zimbabwe are highly enriched in incompatible trace elements and constitute the "northern province". In contrast, basalts from Lesotho and from the southern segment of the Lebombo monocline have lower or “normal” abundances of these elements and were regarded as a "southern province'. Recent work has established that this change in composition takes place relatively rapidly in the Central Lebombo.
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  • Date Issued: 1988

A Morena amohela

- Guardian Angels, Composer not specified, Dargie, Dave

A Morena amohele

- Guardian Angels, Composer Not Specified, Dargie, Dave

A ne lerato

- St Theresa's Choir, Composer Not Specified, Dargie, Dave

A phenomenological explication of the artistic creative experience of a painter, a writer and a playwright

- Lambie, Eileen

  • Authors: Lambie, Eileen
  • Date: 1988
  • Subjects: Phenomenology Art -- Philosophy Artists Creation (Literary, artistic, etc.)
  • Language: English
  • Type: Thesis , Masters , MSocSc
  • Identifier: vital:3115 , http://hdl.handle.net/10962/d1004605
  • Description: The aim of the thesis was to explore two focus questions using the phenomenological approach. Firstly, what it meant to be an artist for three particular artists; a painter, a writer and a playwright. Secondly, what a general explicitation (after Van Kaam, 1958) of the three subjects' artistic creative experience and working processes revealed in essence. The taped data of the three artists were reduced and explored through a number of phenomenological strategies. This led to the formulation of four essential descriptions for each artist, which were based structurally on Van den Berg's experiential categories in A Different Existence. Thus, the essential descriptions reflect each artist's relationship with his/her world, body, fellow people and time. The final step was the achievement of a general extended description. The major conclusion arising from the phenomenological explication is that art affords a way through which artists are able to live an authentic existence. That is, the body and world of the artist are in harmony and the artist's art roots him in the past, is manifest in the present and indicates the future direction of his work. Another conclusion is that the artist is Janus-faced and this enables him/her to balance subjectivity and objectivity in the Lebenswelt and to communicate what he/she sees to others in a healthy way through art. The artist's relationship with world, body, fellow people and with time, is postulated as being qualitatively richer than that of the nonartist. The two focus questions were successfully answered through the research explication and were validated by two independent judges. The viability of the phenomenological approach in the field of artistic creativity was therefore demonstrated. Suggestions for future research were made, one of which was that more phenomenological research aimed at eliciting specific information on the creation of art works might render more information on the artistic creative process.
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  • Date Issued: 1988

A phenomenological explication of the experience of having one's bereavement denied by others

- Sennett, Margot Jane

  • Authors: Sennett, Margot Jane
  • Date: 1988
  • Subjects: Death -- Psychological aspects , Bereavement , Grief
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3108 , http://hdl.handle.net/10962/d1004527 , Death -- Psychological aspects , Bereavement , Grief
  • Description: Bereavement is the natural human reaction to the death of a significant other. Often the experience of the bereaved person is denied expression in the social context. The aim of this thesis is to examine what it means to have one's bereavement denied by others. The relevant literature was reviewed. Theories which have both reflected and influenced the way the bereaved are perceived in contemporary western society have been discussed. The historical background to changing attitudes towards death was described and the reasons for the "denial of death" were examined . The narcissistic personality in particular was considered . Using the Phenomenological method, a question was formulated to elicit the lived structure of the experience being researched. This was asked of thirteen voluntary subjects who had experienced the denial of their bereavement by others. Five written answers (protocols) were chosen and explicated. The lived structure of the experience can be described as "a profound and fundamental distancing of the world of the bereaved from the world of others." The implications of this for the bereaved person, bereavement support groups, health care professionals, future research and society as a whole were then critically discussed .
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  • Date Issued: 1988

A possible relation between dietary zinc and cAMP in the regulation of tumour cell proliferation in the rat

- Skeef, Noel S, Duncan, John R

  • Authors: Skeef, Noel S , Duncan, John R
  • Date: 1988
  • Language: English
  • Type: Article
  • Identifier: vital:6473 , http://hdl.handle.net/10962/d1006154 , http://dx.doi.org/10.1079/BJN19880052
  • Description: The possibility of an effect of zinc on the rate of tumour cell division, mediated through a regulation of cellular cAMP concentration, was investigated in the present study in rats. Dietary Zn deficiency (< 1·5 mg Zn/kg) but not Zn excess (500 mg Zn/kg) resulted in an increased cAMP concentration in transplanted hepatoma cells. Neither treatment had any effect on the cAMP concentration in regenerating liver or normal resting liver. Both the deficient and excess Zn diets resulted in a small reduction in tumour growth (not statistically significant). The results seem to indicate that the relation investigated in the present study does not apply in the cell line used.
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  • Date Issued: 1988

A re tswarelang

- St Zeno's Choir, Composer Not Specified, Dargie, Dave

A study of universal algebras in fuzzy set theory

- Murali, V

  • Authors: Murali, V
  • Date: 1988
  • Subjects: Fuzzy sets Algebra, Universal
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:5394 , http://hdl.handle.net/10962/d1001983
  • Description: This thesis attempts a synthesis of two important and fast developing branches of mathematics, namely universal algebra and fuzzy set theory. Given an abstract algebra [X,F] where X is a non-empty set and F is a set of finitary operations on X, a fuzzy algebra [I×,F] is constructed by extending operations on X to that on I×, the set of fuzzy subsets of X (I denotes the unit interval), using Zadeh's extension principle. Homomorphisms between fuzzy algebras are defined and discussed. Fuzzy subalgebras of an algebra are defined to be elements of a fuzzy algebra which respect the extended algebra operations under inclusion of fuzzy subsets. The family of fuzzy subalgebras of an algebra is an algebraic closure system in I×. Thus the set of fuzzy subalgebras is a complete lattice. A fuzzy equivalence relation on a set is defined and a partition of such a relation into a class of fuzzy subsets is derived. Using these ideas, fuzzy functions between sets, fuzzy congruence relations, and fuzzy homomorphisms are defined. The kernels of fuzzy homomorphisms are proved to be fuzzy congruence relations, paving the way for the fuzzy isomorphism theorem. Finally, we sketch some ideas on free fuzzy subalgebras and polynomial algebras. In a nutshell, we can say that this thesis treats the central ideas of universal algebras, namely subalgebras, homomorphisms, equivalence and congruence relations, isomorphism theorems and free algebra in the fuzzy set theory setting
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  • Date Issued: 1988
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