Author:Van Den Broek, GJDate:May 1984A computer program, developed to predict the separation characteristics of external stores after release from the carrier aircraft, is discussed The aircraft is represented by panel singularity distributions along the line of Woodward's USSAERO ...Read more
Author:Van Den Broek, GJDate:Jul 1984The effect of aircraft wind modelling on the external store loads is investigated by computing that effect for the external flow field generated by the wing. The application of the panelling /boundary condition method to the perturbation flow ...Read more
Author:Tinley, KLDate:1985A synthesis is presented on the ecology of South African coastal dune ecosystems, which comprise about 80% of South Africa's 3 000 km shoreline.
A detailed description of the extent, structure and functioning of these ecosystems is given. ...Read more
Author:Geldenhuys, CJDate:1985Annotated references to 519 publications are presented, together with keyword listings and keyword, regional, place name and taxonomic indices. This bibliography forms part of the first phase of the activities of the Forest Biome Task Group.Read more
Author:Huntley, BJDate:1985The development of the world's largest open-cast uranium mine in the Namib Desert introduced rapidly increasing demands for water to the area in the early 1970's. In the absence of scientifically based information on the likely impact of water ...Read more
Author:Bruton, MN; Merron, SVDate:1985A list of references to research and records of alien and translocated aquatic animals in southern Africa is given, as well as a general introduction to the problem of invasive aquatic animals. Reference is made to 5&7 publications. The genera ...Read more
Author:Hall, AV; Veldhuis, HADate:1985In this report a list is given of 1 808 rare, threatened and recently extinct plants in the fynbos and karoo biomes in the Cape Province of South Africa. The area covers the south-western and southern Cape, Namaqualand and the Karoo. Following ...Read more
Author:Hennig, HF-KODate:Aug 1985In this report Background levels and levels of metal accumulation in water, sediments and fauna were determined using a typical data set from South Africa-This was done to establish the extent and reliability of the available data and to ...Read more
Author:Cooper, Antony KDate:1988Geographical information consists of non-spatial information (alphanumeric) and spatial information (vector and raster), the relationships between the non-spatial information and the spatial information, as well as the spatial relationships ...Read more
Author:Cooper, Antony KDate:1988A number of countries and international organizations are developing standards for the exchange of digital geographically referenced information. This paper provides a survey of some of these standards and highlights the problems associated ...Read more
Author:Rust, FC; Hugo, FDate:1990The reflection of primary cracks through overlays and seals on roads is recognised as a serious problem. The ingress of rain-water through these cracks can cause pumping which leads to forms of distress such as potholing and/or deformation. ...Read more
Author:Olivier, JJ; Greenwood, PH; Cooper, Antony K; McPherson, DR; Engelbrecht, RDate:1990Owing to the complex, inter-disciplinary nature of geographical information systems (GIS), and to the wide variety of commercial GIS software available, considerable effort is needed to select software and hardware which most nearly matches ...Read more
Author:Greben, JMDate:Nov 1991This paper originated from the author's dissatisfaction with the way the discrete Fourier transform is usually presented in the literature. Although mathematically correct, the physical meaning of the common representation is unsatisfactory, ...Read more
Author:Talma, AS; Vogel, JCDate:Mar 1992An oxygen isotope temperature record over a large part of the past 30,000 yr has been obtained for the southern Cape Province of South Africa by combining data on the isotopic composition of a stalagmite from a deep cave with that of a confined ...Read more
Author:Ryan, PG; Steele, WK; Siegfried, WR; Vogel, JCDate:Nov 1992There are several problems associated with determining radiocarbon dates, particularly for organic material from Antarctica. However, this study attempts to find accurate measure of the length of time these radiocarbon dates have been established ...Read more
Author:Hulsman, A; Swartz, CDDate:1993The challenges facing the design and operation of small community wastewater treatment plants are discussed. The package plant concept is considered and the consequent development of a compact intermittently aerated activated sludge package ...Read more
Author:Kfir, R; Burger, JS; Idema, GKDate:1993Three bays along the South African coast were studied for the presence of Salmonella spp in seawater, effluent and storm water discharges into the bays and in shellfish harvested at the same sites. The microbial quality of water and shellfish ...Read more
Author:Rodda, N; Amory, A; Kfir, RDate:1993The feasibility of applying microbial risk assessment techniques in South Africa was evaluated by assessing risks associated with enteric viruses in raw and treated drinking water. Maximum daily risks associated with treated drinking water ...Read more
Author:Rodda, N; Bateman, B; Kfir, RDate:1993Chlor-floc tablets are intended for purification of small quantities of water for individual use by combined flocculation and disinfection. Removal of Escherichia coli E25, various viruses and Giardia cysts from polluted water by Chlor-floc ...Read more