Showing items 36 - 55 of 107

A contribution to the respiratory physiology of three South African freshwater pulmonate snails, Bulinus (Physopsis) Africanus (Krauss), Bulinus (Bulinus) Tropicus (Krauss), and Lymnaea Natalensis Krauss

- Alberts, I E

  • Authors: Alberts, I E
  • Date: 1966
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:20965 , http://hdl.handle.net/10962/5696
  • Description: From Introduction: The use of chemical molluscicides in the control of schistosome transmitting snails has been largely based on empirical studies of toxicity, rather than on a clear understanding of basic physiology and biochemistry of snail hosts. It is therefore possible that purely physiological studies may in themselves provide information which could be of value in the development of more effective mollucicides. In this investigation an attempt has been made to understand some aspects of the respiratory physiology of three species of fresh-water pulmonate snails, all of which are of medical and veterinary importance in the Republic of South Africa. Bulinus (Physopsis) africanus (Krauss) is the intermediate host of Schistosoma haematobium, the causative organism of human schistosomiasis (Bilharziasis). Bulinus (Bulinus) tropicus (Krauss) is the intermediate host of the conical flukes Calicophoron calicophorum and Paramphistomum microbothrium and of the liver fluke Fasciola hepatica, while Lymnaea natalensis Krauss is the intermediate host of the liver fluke Fasciola gigantica.
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  • Date Issued: 1966

A study of Bantu retail traders in certain areas of the Eastern Cape

- Savage, Richard Brougham

  • Authors: Savage, Richard Brougham
  • Date: 1966
  • Subjects: Black people -- South Africa -- Eastern Cape
  • Language: English
  • Type: Book , Text
  • Identifier: http://hdl.handle.net/10962/2758 , vital:20323
  • Description: In this study, consideration has been given only to the Bantu in retail trade in the Bantu areas (which are predominantly rural) and in the smaller urban complexes outside these areas. Retail trade m the rural Bantu areas of the Eastern Cape has until recent years been the near-monopoly of the Whites, who still retain the bulk of this business. White traders provide the channel through which most goods are imported' into these areas and it is through them that a large part of all local produce is exported'. They act as 'middlemen', buying local produce for resale on the local domestic market. They are an important source of credit and their trading stations are important social centres in the normal run of events of the local communities. White traders have always offered other services apart from merely supplying material needs. They act as postmasters and there are frequent calls for their advice, and in cases of illness and birth, for their motor cars. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
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  • Date Issued: 1966

A study of irradiation effects in solids

- Brown, Michael Ewart

  • Authors: Brown, Michael Ewart
  • Date: 1966
  • Subjects: Decomposition (Chemistry) , Crystals -- Thermal properties , Oxalates -- Thermal properties , Solids -- Effect of radiation on
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:4509 , http://hdl.handle.net/10962/d1013387
  • Description: One of the primary objects of this research was to determine, if possible, the nature of the radiation damage prior to thermal decomposition. The X-ray study has not wholly achieved this although more information has been derived from it than from similar work on AgMnO₄ However, the diffuse reflections obtained do indicate, quite strongly, the creation of point defects during irradiation. This is of value since such assumptions have been made in the explanation of the kinetics of decomposition of a number of irradiated solids (BaN₆,CaN₆). In addition the X-ray work has suggested future research which should produce useful information; namely, a precise study of the diffuse reflections. Another object of the research was to attempt to determine what characteristics, if any, of the kinetics of the decomposition of an unirradiated solid would predetermine a marked irradiation effect. It is obvious that the type of nuclear growth which occurs e.g. branching chain, or power law, does not characterise a substance with regard to a possible irradiation effect . The photosensitivity, or otherwise, also does not determine whether there will be an irradiation effect. However, the one property that the substances which have been studied, have in common, is a polyatomic anion, but here again ammonium dichromate does not show an acceleration of the decomposition after irradiation. Consequently it is considered that it is not possible to say, a priori, whether a solid will undergo an accelerated decomposition after irradiation. Each new solid, unless it belongs to a particular class e.g. the alkaline earth azides , must be considered afresh. Nevertheless it does appear that the irradiation effect can take two forms: - (i) the production of an unstable compound e.g. nickel oxalate, the decomposition of which affects the normal pyrolysis; and (ii) the production of point defects which determine the nature of the subsequent thermal decomposition e.g . CaN₆ . It is possible that the effect requires an interaction of the created point defects with the existing line defects.
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  • Date Issued: 1966

Albany Rugby Football Club 1st XV, 1966

  • Date: 1966
  • Subjects: Rugby football -- South Africa -- Eastern Cape -- Photographs , Albany Rugby Football Club -- Photographs
  • Type: still image
  • Identifier: http://hdl.handle.net/10962/46006 , vital:25567 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , PIC/M 6693
  • Description: Albany Rugby Football Club 1st XV 1966. 75th anniversary since founding in 1891, Team photograph with rugby/football players, in rugby uniform, Group photograph, Outdoor photograph, Black and white photograph, President wearing suit, Young boy (mascot) standing in front holding a rugby ball and wearing a team hat, Players have arms crossed, Back row: P. le Roux, D. Blomfield, N. Webb, T. Wakeford, B. Timm (President), P. du Preez (Captain), F. Maritz, L. Pienaar, D. Brown, E. Kent, Front row: D. Pitt, J. van Blommenstein, J. Viljoen, Jamie Coetzee (mascot), N. Castelyn, B. Tomlinson, N. Steffans.
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  • Date Issued: 1966

Amen

- Zwelitsha church choir, Composer not specified, Dargie, Dave

An examination of the extractives of Leonotis species

- Kaplan, Errol R

  • Authors: Kaplan, Errol R
  • Date: 1966
  • Subjects: Leonotis -- Analysis Botanical chemistry Chemistry, Analytic Chemistry, Organic
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:4481 , http://hdl.handle.net/10962/d1012628
  • Description: Marrubiin and the other two diterpenoids, compounds X and Y, which had previously been isolated from Leonotus leonurus have been reinvestigated. Although the structure for marrubiin is well known its stereochemistry has been the subject of protracted discussion and is by no means secure except at C₅ and C₁₀ . N.M.R. spectral evidence showed that the lactone ring was cis-fused and β-orientated. Dehydration experiments carried out by previous workers were repeated, in order to resolve the residual uncertainty regarding the stereochemistry at C₉, an attempt was made to prepare iodoacetyl marrubic acid for X-ray crystallographic studies. Compound Y, C₂₀H₂₈0₃, a triply-unsaturated compound was shown by spectral studies to contain a furan ring and an α,β- unsaturated keto-group. It possesses a hydroxyl group incapable of acetylation, but readily removed by alkali and dehydrating agents to yield a tetraunsaturated compound, anhydro~Y; the hydroxyl is thus tertiary, Isolation of 1:2:5-trimethylnaphthalene on dehydrogenation indicated a relationship with the labdane diterpene group and supported the C₂₀ formula, The position of the α,β-unsaturated keto-group was resolved by interpretation of the ultraviolet spectra of degradation products and also by isolation of 1:2:3:5- trimethylnaphthalene on dehydrogenation of a suitable grignard product, The presence of a β-substituted furan was further indicated by colour reactions and confirmed by mass and n.m.r. spectra. The skeleton of compound Y is correlated with marrubiin via "iso-ambreinolide " and its stereochemistry is discussed. Further stereochemical assignments are postulated from the study of the n.m.r. spectra. Compound X, C₂₀H₂₈0₅, was shown by spectral and chemical evidence to be a diterpenoid dilactone containing an ether bridge between C₉ and C₁₃ Isolation of 1:2:5 trimethylnaphthal ene on dehydrogenation showed it to be closely related to marrubiin, This was supported by n.m.r. spectral results. A structure for compound X is proposed and the stereochemistry discussed. The aerial portions of Leonotis leonitis were also extracted and shown to contain a new compound, compound R. Preliminary investigation showed that it was a dilactone containing a furan ring, The n.m.r. spectrum of the compound is discussed.
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  • Date Issued: 1966

An investigation into the importance of rhythmic and melodic variation for Brahm's development sections, with special reference to his four symphonies

- Schoeman, Delene Letitia

  • Authors: Schoeman, Delene Letitia
  • Date: 1966
  • Subjects: Brahms, Johannes, 1833-1897 -- Symphonies , Variations -- History and criticism
  • Language: English
  • Type: Thesis , Masters , MMus
  • Identifier: vital:2690 , http://hdl.handle.net/10962/d1013170
  • Description: "Variation is one of the oldest and most elemental types of music, beloved and practised by all musicians since the early lute and keyboard composers." The principle of the variation is that of "variety within unity, secured by the reproduction of limited musical material in changing aspects and is fundamental to composition." Typical instances are the use of fugal themes in changing combinations and with changing counter-material; continuous sequential expansion of a single motif in the baroque sonata or suite; the symphonic development in classical sonata form; ornamentation, compression, extension or elaboration of recapitulated sections. Intro., p. 1.
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  • Date Issued: 1966

An investigation of the judgement of a sample of South African adolescent schoolchildren in certain areas of moral behaviour

- Hayward, Fritz Reitz

  • Authors: Hayward, Fritz Reitz
  • Date: 1966
  • Subjects: Teenagers -- South Africa -- Attitudes , Youth -- South Africa -- Conduct of life , Multiculturalism -- Moral and ethical aspects , Moral education -- South Africa , Moral development -- South Africa
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:1998 , http://hdl.handle.net/10962/d1015009
  • Description: A. The Aims The modern adolescent is frequently accused of being morally lax; his judgement of moral issues is held in question; and parents, church and school are accused of having lost their influence on present-day youth. The writer wes lnterested in finding out whether these accusations could in fact be substantiated amongst a sample of adolescent school-children in a selected urban area. The aims of the research, therefore, were as follows :- (i) to investigate the judgement of these adolescents in certain given areas of moral behaviour, (ii) to determine whether there were any appreciable differences between the Afrikaans-speaking and English-speaking adolescents of the sample in their judgements of these moral issues, (iii) to determine whether there were any appreciable differences between adolescent boys and girls of the sample in their judgement of these moral issues, (iv) to explore the influences which caused the tested adolescents to re-act as they did.
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  • Date Issued: 1966

Art schools float Rag week, 1966

Aspects of reality as reflected by the human form in painting

- Fourie, F T

  • Authors: Fourie, F T
  • Date: 1966
  • Language: English
  • Type: Thesis , Masters , MFA
  • Identifier: vital:21174 , http://hdl.handle.net/10962/6739
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  • Date Issued: 1966

Bawo Wethu osezulwini

- Zwelitsha church choir, Composer not specified, Dargie, Dave

Bonke badilawi ngoMoya Oyingcwele

- Zwelitsha church choir, Composer not specified, Dargie, Dave

Bright Easters Jazz Concert.

- Mama, Colenso, Spoyo, Aspro, Tshomela, Donald, Modikwe, Phyllis, Mehloena, Sabie

  • Authors: Mama, Colenso , Spoyo, Aspro , Tshomela, Donald , Modikwe, Phyllis , Mehloena, Sabie
  • Date: 1966
  • Subjects: UNCATALOGUED
  • Type: Image
  • Identifier: http://hdl.handle.net/10962/222632 , vital:48895 , DTC-027
  • Description: Jazz Easters perfomance with 2 top bands from Peninsula and top jazz artists of Cape Town. , Use of this resource is governed by the terms and conditions of the Creative Commons "Attribution-NonCommercial-ShareAlike" License (http://creativecommons.org/licenses/by-nc-sa/2.0/) (NEVER CAHNGE THIS FIELD)
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  • Date Issued: 1966

Certain rare fishes from South Africa

- Smith, J.L.B. (James Leonard Brierley), 1897-1968

Describing behaviour: a philosophical analysis

- Bunting, I A

  • Authors: Bunting, I A
  • Date: 1966
  • Subjects: Human behaviour -- Philosophy , Analysis (Philosophy)
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2744 , http://hdl.handle.net/10962/d1009991 , Human behaviour -- Philosophy , Analysis (Philosophy)
  • Description: Questions revolving around the possibility and justifiability of reductive analyses of the concept 'not', lie at the heart of many of the problems in the philosophical interpretation of not-descriptions. In this thesis, I wish to show, by discussing various problems in the logic of not-descriptions, that, and why, reductive analyses must be unsatisfactory.
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  • Date Issued: 1966

Drum majorettes led by Lorraine Imphy possibly at Rag week, 1966

Drum majorettes possibly at Rag week, 1966

Electron precipitation and ionospheric disturbance

- Torr, Marsha R

  • Authors: Torr, Marsha R
  • Date: 1966
  • Subjects: Electrons , Electron precipitation , Ionosphere , Ionospheric electron density
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5509 , http://hdl.handle.net/10962/d1007691
  • Description: From Introduction: The minimum in the scalar magnitude of the geographic total field, which lies off the coast of Brazil, allows the mirror points of trapped particles to dip low into the atmosphere over the South Atlantic Ocean, resulting in two regions of maximum intensity of preciptated particles in that region, one from the inner belt and one from the outer. High charged particle fluxes have been observed at low altitudes over these regions by satellites Sputnik 5 and 6 (Ginsburg et al, 1961) and Discoverer 31 (Seward and Kornblum, 1963) amongst others. The more southerly of these two regions acts as a sink for electrons from the outer radiation belt and will be referred to in what follows as the Southern Radiation Anomaly. Gladhill and van Rooyen (1963) predicted that the energy deposited in the upper atmosphere by these charged particles would be sufficient to give rise to enhanced geophysical effects such as auroral emission, X-rays and ionization and heating of the upper atmosphere in this region. Although some of these effects have been correlated with precipitated electrons, no definite relation had until now been established between ionospheric effects and precipitated particles. The aim of this thesis was to investigate such a relationship and the results were extremely successful. It will be shown conclusively in what follows, that the precipitation of electrons can account for the ionospheric disturbances defined by a disturbance criterion at all stations around L=4. Part I describes the exploration of the radiation belts and the magnetosphere with rockets and satellites. The resulting theoretical models based on the observations are discussed. A brief review is given of the work that has been done to date to derive equations for the loss and replenishment of particles in the belts. Because of the complexity of these and the number of doubtful factors involved, a simple model of injection of electrons into the outer belt is devised, giving average values of trapped and precipitated electron fluxes at any point around L=4. In Part II, this model is employed together with the disturbance criterion of Gledhill and Torr (1965) to examine the relationship between ionospheric disturbances and electron fluxes. Also the energy range of the precipitated particles is examined.
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  • Date Issued: 1966

Fishes of the Sub-family Nasinae with a synopsis of the Prionurinae

- Smith, J.L.B. (James Leonard Brierley), 1897-1968

Genadendal and its satellites : a history of the Moravian Mission stations at the Cape, 1737-1869

- Krüger, Bernhard

  • Authors: Krüger, Bernhard
  • Date: 1966
  • Subjects: Moravians -- Missions -- South Africa -- Genadendal , Missions -- South Africa -- History , Genadendal (South Africa) -- History , Cape of Good Hope (South Africa) -- History -- To 1795 , Cape of Good Hope (South Africa) -- History -- 1795-1872
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:1284 , http://hdl.handle.net/10962/d1013470
  • Description: J,F.w. Kühn, a member of the Moravian Mission Board, wrote in 1871 to the Superintendent at Genadendal that the closed settlements in South Africa were a precious and unique feature of mission work for which the brethren should be grateful. While he had been at the Gape, he had suffered under the difficulties of their management, but from the distance, and in comparison with mission work elsewhere, he had learnt to appreciate them as a great blessing. The questions arise: How dld they originate, develop and survive for so long? What were their characteristics, advantages and limitations? What factors contributed to their development? How did they fit into their milieu and influence it? The following thesis is an effort to give a detailed history of their development and an appraisal. I have endeavoured to give a vivid picture of personalities and events within the limits of historical correctness, because I consider it the noblest aim of historical research to confront us with the past in such a way that personal understanding becomes possible. In as much as we meet those who have made history. or have been part of it, in person, we can arrive at a deeper appreciation of their achievements, problems and failures.
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  • Date Issued: 1966
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