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Browsing Research Publications/Outputs by Issue Date

Now showing items 21-40 of 11167

Diatoms of the marine littoral of Steenberg's cove in St. Helena Bay, Cape province, South Africa

Author: Malcolm, HG Date: 1973 In a series of previous investigation of the marine littoral of the South African coast, the author has made observations at the various localities along the shores of the Eastern Cape Province. All these stations are situated along the shores ... Read more
Viruses in renovated waters

Author: Nupen, EM Date: Jun 1974 This paper attempts to assess the present and future needs for such waters and the virus risk involved in their usage. Read more
Building design for the Rhodesian climate

Author: Van Straaten, JF ; Lotz, FJ Date: Oct 1974 The need for conserving energy is emphasised. Recommendations are made to ensure the best thermal performance under the relevant climatic conditions. Several construction methods are discussed against a thermal comfort scale for housing. Read more
Account of the littoral diatoms from Langebaan, Saldanha bay, Cape province, South Africa

Author: Giffen, MH Date: 1975 The diatom flora from several stations on the eastern shore of Saldanha Bay (South Africa) has been studied. Saldanha bay is situated on the western coast of South Africa 110Km north of Cape Town. Read more
Technique for smoothing free-flight oscillation data.

Author: Beyers, ME Date: 1975 A technique based on superposition of tricyclic solutions has been proposed for smoothing free-flight angular motion. When incorporated into a conventional tricyclic data reduction program, the method is convenient to use and does not require ... Read more
Further account of the marine littoral diatoms of the Saldanha Bay Lagoon, Cape province, South Africa

Author: Giffen, MH Date: 1976 This paper deals with the continuation of an investigation of the marine littoral diatom flora of the Saldanha bay Lagoon, situated on the west coast of South Africa. Read more
Eutrophication levels of some South African impoundments III. Roodeplaat Dam

Author: Steyn, DJ ; Toerien, DF ; Visser, JH Date: Jan 1976 Algal bioassays indicated that the waters of Roodeplaat dam are severely eutrophied since algal growth potentials (AGP) of up to 200 mg/l and batch culture algal growth rate of up to 2,2 d were registered with selemastrm capricornutum as test ... Read more
Eutrophication levels of some South African impoundments. IV. Vaal Dam

Author: Steyn, DJ ; Toerien, DF ; Visser, JH Date: Apr 1976 The purpose of this study was to determine the present eutrophication levels of the Vaal dam, to determine how it might be affected by increased discharged of secondary treated sewage effluents Read more
Collapse settlement in compacted soils

Author: Booth, AR Date: 1977 Research into collapse settlement in compacted soils is described, with special reference to recent cases in Southern Africa where collapse settlement occurred in road embankments following wetting of the soil. The laboratory work described ... Read more
Observations on algal populations in an experimental maturation pond system

Author: Shillinglaw, SN ; Pieterse, AJH Date: 1977 A dense algal population is of primary importance in sewage maturation ponds for the removal of plant nutrients, especially ammonia and orthophosphate. In the Republic of South Africa and in South West Africa sudden algal population declines ... Read more
Miners' dictionary: English/Fanakalo

Author: Chamber of Mines, South Africa Date: 1978 In simple terms Fanakalo means 'like this'. Fanakalo originated in the sugar industry of KwaZulu Natal as a result of Indians trying to learn English and Zulu at the same time. The language spread across the boarders of KZN to industries and ... Read more
Components of electrically small loop antennae: 1

Author: Bowles, BA ; Austin, BA ; Attwell, CWP Date: Nov 1978 The paper outlines the fundamentals of underground radio transmission with particular emphasis on loop antennas Read more
Components of electrically small loop antennae: 2

Author: Bowles, BA ; Austin, BA ; Attwell, CWP Date: Dec 1978 The paper describes the properties of matching networks employed which determine the most desirable network Read more
Two-stage optimization in a transportation problem

Author: Stewart, TJ ; Ittmann, HW Date: 1979 A study of the economic distribution of maize throughout South Africa is reported. Although the problem of minimizing total transportation costs in such a situation is a classical one, and its solution is well known, there was in this case a ... Read more
Small loop antenna analysis: Computer program

Author: Bowles, BA ; Attwell, CWP Date: Nov 1979 The authors present a computer program which analyses an electrically small loop antenna having a capacitive matching network Read more
Observations on the ecology growth and physiology of microcystis aeruginosa in the laboratory and in the field

Author: Scott, WE Date: 15 Nov 1979 As a result of potential toxin production the blue-green alga microcystis aeruginosa is a serious problem in eutrophic impoundments in South Africa. This study reports on growth characteristics of M. aeruginosa in the laboratory and is ... Read more
Alternative energy sources for the heating and cooling of a building

Author: Strydom, JFS Date: 27 Nov 1979 The objective of two of the studies was to choose the most economical source of heating energy, taking cognizance of the building owner’s particular circumstances; in both cases a suitable alternative to light petroleum oil, which had been ... Read more
Natural road construction materials of Southern Africa

Author: Weinert, HH Date: 1980 Naturally occurring materials, such as rock and soil, constitute a significant portion of the materials content and cost of a road. Most textbooks dealing with road construction materials, however, are mainly concerned with the manufactured ... Read more
Basic principles of solar water heating

Author: Page-Shipp, RJ Date: 10 Sep 1980 This article correctly reflects the principles of Solar Water Heating as they pertain to South African conditions. However, it was written in 1980 and the global energy situation has changed considerably. Furthermore, modern commercial units ... Read more
Capturability in a two-target "Game of two cars"

Author: Getz, WM ; Pachter, M Date: 1981 The regions of capturability and draw are derived for a two-target pursuit-evasion differential game of two cars. Specifically, using geometric arguments, complete barrier surfaces are constructed that emanate from the boundaries of the usable ... Read more

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Browsing Research Publications/Outputs by Issue Date

Browsing Research Publications/Outputs by Issue Date

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