3. Electronic Theses and Dissertations (ETDs) - All submissions
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Item The geology of the Otjosondu manganese area: south west Africa(1959) Roper, HaroldGeological mapping and compilation of data from mining and prospecting operations in the Otjosondu area in South West Africa provided the information presented in this thesis. The geomorphology of the area is described and the general geology is discussed. Details of the complicated folding suffered by the Iamara rocks are presented. The petrology and petrography of' the outcropping representatives of the ancient sedimentary and intrusive rocks is described under the section on economic geology, interpretations of the complex structures of the ore bodies are presented. The mineralogy of the ores was studied by means of polished sections, X-ray diffraction and differential thermal analysis techniques. It is concluded from both field and laboratory evidence that these ores represent the metamorphosed equivalents of syngenetic manganese bearing sedimentsItem A critical analysis of the Bantu pelvis, with special reference to the female.(1945) Heyns, O. S.The student of pelvic morphology is compelled sooner or later to consider the two main functions of the girdle, those of weight-bearing and parturition. These functions Inevitably guide his Investigations. Comparatively little work has been done on the pelvic mechanics of erect posture. The evolution of man's erect posture, on the other hand, has been considered by Friedenthal (1910), Weidenreich (1913), Keith (1923), Morton (1926), Westenhofer (1929), and Reynolds (1931)* The last author's disappointing paper succeeds only in demonstrating the difficulty of establishing the principles underlying the orthopaedist's approach to the mechanics of man's posture.Item Abdominal decompression: a monograph(1963) Heyns, O. S.A short explanatory foreword to this monograph appears imperative. Abdominal decompression is the device offered for study and consideration to the reader of the following pages. If that reader accepts, for various cogent reasons, that abdominal decompression has certain effects upon the human organism— these being beneficial—and wishes to try its application, this is simple. Nothing is needed beyond the knowledge that the atmospheric pressure around the human trunk is to be reduced by one to three pounds a square inch of surface. The reader can then improvise some simple equipment and observe the effects of decompression upon him- or herself, upon another laboratory subject or on a patient who is pregnant, in labour, or suffering from menstrual pain or ordinary acute backache. The present work is but a record of the observable phenomena and their variations : matters which can be ascertained independently by the reader. As there is a wide range of application of the method and much time is needed to put possibilities to the test, an experimenter will be saved two years of work if he or she sets out equipped with the knowledge at present available.Item The active failure of embankments of cohesionless materials(1965) Marais, G. v. R. (Gerrit van Rooyen)There are two methods available for the calculation of the disturbing forces in the active failure by sliding embankments of cohesionless material. The first is due to Hummel & Finnan (1921) and Trollope (1951) and the second is due to Rendulic (1938). Using these two methods in the stability analysis of a sliding failure of a 260 ft high earth dam at Cullinan, South Africa, showed that there was a significant difference in the horizontal thrusts as determined by the two methods. (Abbreviation abstract)Item The Rebellion in South Africa 1914 - 1915(1962) Spies, S.B.Item The missionaries on the eastern frontier of the Cape Colony, 1799-1853(1959) Williams, DThis work attempts on the investigation into the activities of the missionaries of the Scottish (1), Wesleyan Methodist, and London Missionary Societies on the Eastern Frontier of the Cape Colony (2) during the years 1799-1853. The theme of the half-century is a triple failure: the failure to propagate Christianity among the amaXhosa, the failure to retain the goodwill of the colonists, and the failure to exercise significant political influence on the Cape administration. I have tried to explain why this occurred. There is a great need in South African historiography for detailed investigation into the contact between the missionaries and the Bantu. Missionary histories to date are of little value for an understanding of the problem of culture contact (J). With regard to the amaXhosa, there is no explanation, much less a frank admission, of the failure of the missionaries significantly to influence th4t race . Hitherto the tradition of missionary historiography has been to chronicle the increase of the number of mission institutions, and to accept this as evidence of the growth of Christianity as propagated by devoted and self-sacrificing missionaries. A re-assessment is long overdue. During and after the second half of the Nineteenth Century missionary circles were evaluating their achievements in Kaffirland, and were disappointed at the results. This missionary probe (4) has not been adequately reflected in contemporary South African missionary historiography. Of the missionary failure in Kaffirland, there is no doubt. Even today the amaXhosa is not a Christian nation. The publication of scurrilous attacks on missionaries in the form of pamphleteering literature (5) is symptomatic of the way in which such intellectual~ as are under the sway of Bantu Nationalism, is rejecting Christianity today (6). (Abbreviation abstract)Item South African architectural record(Institutes of South African architects and the chapter of South African quantity surveyors, 1910-07)South African architectural RecordItem An investigation into certain aspects of the biology of malameba locustae, a protozoan parasite of locusts(1966) Borthwick, Robert BaillieItem South African air-masses :their properties, movement and associated weather(1958) Taljaard, Johannes Jochemus