An application of the natural area concept to East London apartment areas
- Authors: Brehmer, D A E
- Date: 1975
- Subjects: Natural areas -- South Africa -- East London , Apartment houses -- South Africa -- East London , Urban ecology (Sociology) -- South Africa -- East London
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:4872 , http://hdl.handle.net/10962/d1009694 , Natural areas -- South Africa -- East London , Apartment houses -- South Africa -- East London , Urban ecology (Sociology) -- South Africa -- East London
- Description: The world is faced with a population explosion, and cities are becoming ever larger. The world population will grow from its present 3500 million to more than 7 000 million by the year 2 000. The majority of cities are thus faced with the problem of housing vast numbers of people living in single family dwellings forming low density urban sprawl. Conditions are no different in South Africa where the present white population of about four million is expected to grow to between six and seven million by the year 2000. The present housing requirement (1970-75) for Whites, based on low and high population projections, is 32 732 and 40 150 houses respectively. From 1995-2000 the figures will have risen to 42 742 and 65 580 respectively. At that rate sprawl here will reach alarming proportions unless it can be curtailed by higher density housing. As the population trend does not seem likely to be reversed the problem lies in how to provide housing for an escalating population but at the same time to reduce urban sprawl and provide satisfactory living conditions.
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- Date Issued: 1975
Remarks on formalized arithmetic and subsystems thereof
- Authors: Brink, C
- Date: 1975
- Subjects: Gödel, Kurt , Logic, Symbolic and mathematical , Semantics (Philosophy) , Arithmetic -- Foundations , Number theory
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5424 , http://hdl.handle.net/10962/d1009752 , Gödel, Kurt , Logic, Symbolic and mathematical , Semantics (Philosophy) , Arithmetic -- Foundations , Number theory
- Description: In a famous paper of 1931, Gödel proved that any formalization of elementary Arithmetic is incomplete, in the sense that it contains statements which are neither provable nor disprovable. Some two years before this, Presburger proved that a mutilated system of Arithmetic, employing only addition but not multiplication, is complete. This essay is partly an exposition of a system such as Presburger's, and partly an attempt to gain insight into the source of the incompleteness of Arithmetic, by linking Presburger's result with Gödel's.
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- Date Issued: 1975
A dielectric and spectroscopic study of molecular association in solutions of alcohols
- Authors: Campbell, Colin
- Date: 1975
- Subjects: Alcohols , Dielectrics , Spectrum analysis
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4454 , http://hdl.handle.net/10962/d1010424
- Description: This study is concerned with the association characteristics of solutions of alcohols in some non-polar solvents. The permittivities at 2 MHz and 25°C for solutions of the straight chain octanols in cyclohexane, carbon tetrachloride and benzene have been examined over the entire solute concentration range, with particular attention -1 being paid to the range below 0.1 molℓ⁻¹ By applying the Kirkwood- Fröhlich equation to these data, the apparent dipole moments of the alcohols as a function of concentration have been evaluated. These concentration dependencies have been correlated with infrared absorption results on the same systems to provide information on the sizes and configurations of the proposed hydrogen bonded multimers. It is concluded that, at very low solute concentrations, the alcohol molecules exist as monomers; but with increasing concentration, two types of hydrogen bonded multimers are formed, the first (at low concentrations) being of high dipole moment and the second (at higher concentrations) being of low dipole moment. At high concentrations, the molecules associate to form a three-dimensional network. Attempts have been made to determine equilibrium parameters for molecular models which are consistent with the qualitative understanding of the association behaviour. These parameters were obtained by applying least-squares, curve-fitting techniques to the low concentration permittivity data. A similar investigation has been conducted on solutions of 2,3,4-trimethyl-3-pentanol in the same solvents. The steric hindrance around the hydroxyl group of this alcohol modifies the association behaviour so that a three-dimensional network does not form at high solute concentrations. Proton magnetic resonance chemical shifts for the hydroxyl proton of this alcohol in carbon tetrachloride solutions have been measured. Attempts have also been made to determine equilibrium parameters which describe formation of the hydrogen bonded multimers. To extend this study to include solutes other than octanols, similar experiments have been conducted on solutions of t-butanol in hexadecane, a system which has recently been investigated by other workers using different experimental techniques. The association behaviour of this system is qualitatively similar to that of the straight-chain octanols. The combination of permittivity and infrared measurements, although proving extremely powerful in interpreting the association characteristics of dilute alcohol solutions, is less adequate at high solute concentrations. Attention was therefore directed towards dielectric relaxation and viscosity studies to investigate concentrated solutions. The relaxation times at 20°C of the low frequency dispersion have been measured for solutions of 1-propanol, 1-butanol, 1-hexanol, 1-octanol and 1-decanol in cyclohexane using time domain reflectometry techniques. Similar measurements have also been made on solutions of 1-butanol and 1-octanol in carbon tetrachloride and in benzene. The concentration dependence of the viscosities of certain of these systems has also been examined in an independent study. The ratio of the dielectric relaxation time to the viscosity, the "reduced relaxation time", is qualitatively similar for each system studied. This similarity leads to an explanation of the molecular process responsible for the low frequency dispersion in terms of the proximity of the hydroxyl groups in concentrated alcohol solutions and the fraction of the groups which are not involved in hydrogen bonding.
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- Date Issued: 1975
The shaman and the artist: a personal enquiry
- Authors: Cull, Cleone
- Date: 1975
- Subjects: Art, Shamanistic Shamans Artists
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2478 , http://hdl.handle.net/10962/d1010640
- Description: This inquiry incorporates anthropological surveys on the life and character of the shaman, some writings of the American Plains Indians, and artist's, whose life and work reflects the power/life force so integral to the beliefs of these so called primitive cultures. Since the artist cannot be separated from his environment, the actions and reactions of society have also been explored. The method of inquiry has been to establish, first, the way of the shaman, and then the way of the artist. Although each artist, reflects only certain aspects of the enquiry, there is a strong affinity in the life and works of them all.
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- Date Issued: 1975
Die nywerheidsopleiding van vakleerlinge en hulle relatiewe invloed op die besetting van die arbeidsmark oor die afgelope tien jaar, met inbegrip van die toepaslike aspekte op die grensgebied
- Authors: De Beer, David Petrus
- Date: 1975
- Subjects: Apprentices -- Training -- South Africa -- Eastern Cape , Apprentices -- Labor market -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1082 , http://hdl.handle.net/10962/d1011032 , Apprentices -- Training -- South Africa -- Eastern Cape , Apprentices -- Labor market -- South Africa -- Eastern Cape
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- Date Issued: 1975
Art and conservation
- Authors: Dent, Hugh R
- Date: 1975
- Subjects: Nature conservation Environmentalism Nature (Aesthetics)
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2479 , http://hdl.handle.net/10962/d1011070
- Description: There can be no doubt that population increase and environmental pollution are the world's biggest problems today. These pose serious threats to the quality of life and art. They can only be remedied by an efficient system of birth-control and sound compulsory education, in order to regain spiritual enlightenment. Intro. p. 1.
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- Date Issued: 1975
Poetic situation in the poetry of John Crowe Ransom
- Authors: Driver, Dorothy
- Date: 1975
- Subjects: Ransom, John Crowe,1888-1974 -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2292 , http://hdl.handle.net/10962/d1011459 , Ransom, John Crowe,1888-1974 -- Criticism and interpretation
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- Date Issued: 1975
Interview with Gwanzura Gwenzi Gumboreshumba
- Authors: Gumboreshumba, Gwanzura Gwenzi , Tracey, Andrew T N
- Date: 1975
- Subjects: Gumboreshumba, Gwanzura Gwenzi , Folk music -- Zimbabwe , Karimba music -- Zimbabwe , Mbira music -- Zimbabwe , Sub-Saharan African music , Africa Zimbabwe Mhondoro f-rh
- Language: English
- Type: sound recordings , interviews (sound recordings) , sound recording-nonmusical
- Identifier: http://hdl.handle.net/10962/58258 , vital:27111 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC002-01
- Description: Interview conducted by Andrew Tracey of his first mbira dzavadzimu teacher Gwanzura Gwenzi Gumboreshumba at Harare and at his rural home Mhondoro.
- Full Text: false
- Date Issued: 1975
Economic dualism and labour re-allocation in South Africa, 1917-1970
- Authors: Hindson, Douglas Carlisle
- Date: 1975
- Subjects: Labor policy -- South Africa -- History -- 20th century , Labor laws and legislation -- South Africa , Labor economics -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:1090 , http://hdl.handle.net/10962/d1012294 , Labor policy -- South Africa -- History -- 20th century , Labor laws and legislation -- South Africa , Labor economics -- South Africa
- Description: The central concern of this study is to analyse how the pattern of development in South Africa has influenced the long term growth of productive employment in the economy. The approach adopted is to appply a model of economic dualism to the South African case. Chapter 1, p. 1.
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- Date Issued: 1975
Inspection of bride and attendants : Ngqokotho, 1975
- Authors: Ingle, Pauline Cornwell, 1915-1999
- Date: 1975
- Subjects: Marriage customs and rites -- South Africa -- Transkei , Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Language: English
- Type: Still image
- Identifier: vital:12010 , http://hdl.handle.net/10353/d1000787 , Marriage customs and rites -- South Africa -- Transkei , Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Full Text: false
- Date Issued: 1975
Teenage boys with axes : Ngqokotho, 1975
- Authors: Ingle, Pauline Cornwell, 1915-1999
- Date: 1975
- Subjects: Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Language: English
- Type: Still image
- Identifier: vital:12009 , http://hdl.handle.net/10353/d1000786 , Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Full Text: false
- Date Issued: 1975
Teenage boys, 1975
- Authors: Ingle, Pauline Cornwell, 1915-1999
- Date: 1975
- Subjects: Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Language: English
- Type: Still image
- Identifier: vital:12017 , http://hdl.handle.net/10353/d1000794 , Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Full Text: false
- Date Issued: 1975
Tsomo Dam, 1975
- Authors: Ingle, Pauline Cornwell, 1915-1999
- Date: 1975
- Subjects: Dams -- South Africa , Photography -- South Africa
- Language: English
- Type: Still image
- Identifier: vital:12175 , http://hdl.handle.net/10353/d1000952 , Dams -- South Africa , Photography -- South Africa
- Full Text: false
- Date Issued: 1975
Interactions between steroidal anti-inflammatory agents and collagen
- Authors: Kanfer, Isadore
- Date: 1975
- Subjects: Anti-inflammatory agents Collagen
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3849 , http://hdl.handle.net/10962/d1012620
- Description: Much research has been done on the formation of fibrils from solutions of soluble collagen in vitro in order to gain some knowledge of the mechanisms which may occur in vivo. The in vitro formation of fibres from solutions of collagen has been shown to be extremely sensitive to the nature of the solution environment and the presence of added chemical compounds, and thus constitutes an interesting system for the study of collagen-small molecule inter actions. The present study is concerned with the effects of various corticosteroid drugs, used medicinally as anti-inflammatory agents, on collagen in solution. As these corticosteroids are administered to reduce inflammation in conditions such as rheumatoid arthritis and a host of other pathological conditions in which collagen is implicated, this work has been undertaken in order to establish and charac teri ze any binding mechanisms which may be involved. Furthermore, the corticosteroid drugs available commercially in pure form as the free base or as the water-soluble ester salts offer an interesting range of structural and stereochemical variants for the study of their reaction with a complex and biologically important protein molecule such as collagen. A great deal of research on drug- protein interactions (Goldstein, 1949; Meyer and Guttman, 1968a) and more specifically, steroid-protein interactions have been reported over the years (Daughaday, 1959; Sandberg et al., 1966; Villee and Engel, 1961; Westphal , 1971). Comprehensive reports, however, on steroid-collagen interactions in vitro are conspicuously absent from modern scientific literature although relatively superficial accounts have been published (Menczel and Maibach, 1972; Eik-Nes et al., 1954). Although work involving the above has appeared relating specifically to the effects of steroids on collagen biosynthesis both in vivo and in vitro there have been minimal accounts of steroid-collagen interactions tailored to characterize the binding at the molecular level. The effect of corticosteroids on the metabolism of connective tissue has also received special attention (Asboe-Hansen, 1959; Kivirikko, 1953; Nakagawa and Tsurufuji, 1972). Recently, Uitto et al. (1972) reported the effects of several anti-inflammatory corticosteroids on collagen biosynthesis in vitro, whilst Aalto and Kulonen (1972) reported the effects of several antirheumatic drugs on the synthesis of collagen and other proteins in vitro. The interactions between collagen and certain drugs has also been briefly reviewed (Chvapil, 1967). Much data also exists on the binding of a wide range of small molecules and ions with serum albumin (Steinhardt and Reynolds, 1969; Scatchard, 1949; Klotz, 1950). Serum albumin, being specialized for a very general transport function and apparently designed for the purpose of combining with a large range of small molecules, has a proportion of possible reactive sites 'buried' within the molecule itself because of its folded conformation. In addition, serum albumin shows a high degree of cooperative binding in contrast to collagen. The latter molecule, with its larger molecular size and weight is specialized for a biologically structural function and has a higher proportion of possible reactive sites which appear relatively more accessible to ligands. A study of the interactions between corticosteroids and collagen thus provides the opportunity to investigate a protein which is very different from the much studied serum albumin. Because of the limited information available regarding the interaction of steroid drugs and collagen at the molecular level, studies of this nature are relevant to the understanding of the mode of action of steroid compounds which are such an important group of therapeutic substances used in modern medicine.
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- Date Issued: 1975
The Klinghardt phonolites, South West Africa: Tertiary volcanism in western southern Africa
- Authors: Marsh, J S , Lock, B E
- Date: 1975
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/70164 , vital:29627
- Description: Over 1OO phonolite bodies of mid-Tertiary age occur in the Klinghardt Mountains, 1OO km SE of Luderitz in Southern South West Africa the only published account of these rocks is that of Kaiser (1926) who gives a generalized map and describes briefly the mode of occurrence and petrography of the phonolites. The phonolite bodies are concentrated in an area roughly 8OO km2 and constitute an excellent example of an areal volcanic field (Rittmann, 1962), i.e. the activity occurred at a number of vents spread over a wide area and in most cases only a single eruptive episode took place at each vent.
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- Date Issued: 1975
The Luderitz Alkaline Province, South West Africa II: metasomatism and assimilation in the contact aureole of the Granitberg Foyaite Complex
- Authors: Marsh, Julian S
- Date: 1975
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/132963 , vital:36913
- Description: Reactions between the Outer Foyaite magma of the Granitberg Complex and the sedimentary country rocks are striking. At sandstone contacts the magma has assimilated quartz-rich sedimentary material and a suite of pulaskites, peralkaline nordmarkites, and peralkaline granites have been generated by a complex process involving both assimilation and crystal fractionation.
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- Date Issued: 1975
The Luderitz Alkaline Province, South West Africa I: descriptive petrology of the Granitberg Foyaite Complex
- Authors: Marsh, Julian S
- Date: 1975
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/132951 , vital:36912
- Description: The Granitberg foyaite complex is one of three known alkaline igneous complexes, which, together with a dyke swarm, constitute the Liüderitz Alkaline Province of Lower Cretaceous age. The near-circular complex is emplaced into dolomites and sandstones of the Bogenfels Formation. A large fragment of these sedimentary rocks, originally forming the roof of the intrusion, is preserved in the centre of the complex.
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- Date Issued: 1975
Aenigmatite stability in silica-undersaturated rocks
- Authors: Marsh, Julian Saville
- Date: 1975
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/132942 , vital:36911 , https://doi.org/10.1007/BF00373333
- Description: Aenigmatite is common in many trachytes, phonolites and agpaitic nepheline syenites. Petrographic evidence suggests that the aenigmatite in these rocks arises by the reaction of Ti-magnetite with a peralkaline silica-undersaturated liquid, and it is postulated that a no-oxide field, where aenigmatite is stable, exists in alkaline undersaturated magmas.
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- Date Issued: 1975
Myth and art : a correlation
- Authors: Matthews, Celeste Deluvia
- Date: 1975
- Subjects: Art and mythology
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2487 , http://hdl.handle.net/10962/d1012844
- Description: The word myth evokes the same response as Lawrence's "snake at the water-trough"; the "voice of my education said it must be killed". We do so by confining it to Classicism or any of the diciplines. Myths in Classical language are Roman or Greek stories of fanciful or bawdy content, with naive or picturesque religious significance. A myth is not a story. There are many who interpret and explain myth. The fantasy doctors are applauded by the fantasy consumers. Intro. p. 1.
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- Date Issued: 1975
J C Chase: 1820 settler and servant of the Colony
- Authors: McGinn, M J
- Date: 1975
- Subjects: Chase, J. C, 1806-1876 , British settlers of 1820 (South Africa) , Cape of Good Hope (South Africa) -- History
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2610 , http://hdl.handle.net/10962/d1012872
- Description: J.C. Chase was an 1820 settler who travelled to the Cape with Bailie's party. He was a man of some standing and education. There is evidence that he was a member of the Worshipful Company of Founders, whose arms were later adopted by Aliwal North, but he was reputedly a bookseller in London in 1819. Clearly the reading and writing of books were among his chief preoccupations at the Cape. He was particularly interested in travel and exploration and was one of the early white visitors to Griqualand. But his main objective at the Cape was probably to seek the security of a government appointment, and he held quite a succession of offices until he secured a permanent post in the administration. Even then he was moved from Graham's Town to Albert before he found his niche at Uitenhage, where he was Civil Commissioner and Resident Magistrate from 1849 to 1863. Intro., p.1.
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- Date Issued: 1975