Author:Clarke, BCDate:Mar 1989This report was prepared as a result of a research undertaken in both the catchment and the estuary. The prime motivation for this work has been the need to estimate the impact of the dams on the ecology of the river and estuary and on the ...Read more
Author:Viljoen, AWDate:Jun 1982Pavement behaviour under the super single tyre (SST) was investigated and compared with that under a conventional dual tyre (CDT). Contact areas and contact pressures over a range of loading conditions were measured and compared. Two approaches ...Read more
Author:Ribbens, HDate:1995The objective of this paper is to give an overview of the road traffic safety situation in the Free State Province; to suggest how the community can be involved to improve road traffic safety; and to discuss some of the functions needed to ...Read more
Author:Matsebe, GNDate:Dec 2011South Africa is a water scarce country (Otieno and Ochieng, 2004; Wassung, 2010). The current sanitation system mostly used in South African urban areas depends on extensive use of water in a form of flush toilets. The housing sector in major ...Read more
Author:Van Doornum, GAW; Kuiters, ADate:1967At the request of the Solid Fuels Advisory Bureau a Zeta Model No. 30 boiler, installed on the premises of the United Building Society, U.B.S, building, Johannesburg was tested under actual operating conditions.Read more
Author:Van der Walt, PJDate:1952A Jeffery single roll crusher was installed at Van Dyksdrift colliery with the object of producing coal suitable for firing in South African Railways locomotives.Read more
Author:De Saxe, CDate:Dec 2012Until recently, car-carriers in South Africa operated under abnormal load permits allowing a finite relaxation of legal height and length limits. This practice is being phased out, and exemption will only be granted if a car-carrier complies ...Read more
Author:Theyse, HLDate:Mar 1999Transportek has been involved in accelerated pavement testing (APT) with a fleet of Heavy Vehicle Simulators (HVSs) over the past two decades. During this period, a vast amount of pavement response and performance data has been accumulated, ...Read more
Author:Moodie, BDate:1965During the past few years a survey was undertaken of the petrographic composition and characteristics of various coals sizes produced by collieries in South Africa. This report deals with the smaller coal sizes, in the Transvaal and seven in Natal.Read more
Author:Moodie, B; Kunstmann, FHDate:1963The results of the petrographic analysis and of the laboratory coking tests are discussed in this report.Read more
Author:Savage, WHDDate:1961In the progress report for the period October 1960 to February 1961 (FRI Technical memorandum No. 2 of 1961) certain phosphorus contents of waterberg coal samples were reported.Read more
Author:Savage, WHDDate:1961In the progress report for the period October 1960 to February 1961 (FRI Technical memo 2/1961) certain phosphorus contents of Waterberg coal samples were reported. It was decided that further investigations be undertaken, with particular ...Read more
Author:Moodie, BDate:1975There are two variations in every coal seam seam namely type and rank. Type is determined by the plant material from which the coal was formed and rank is the degree of maturation or metamorphism. Rank is the most important property of a ...Read more
Author:Berry, HDate:1949The No. 4 seam at this colliery, judging from the diagrammatic representations at the end of the report, appears to maintain a uniform structure and a fairly consistent thickness throughout the mine.Read more
Author:Coetzee, BJ; Van Der Meulen, F; Zwanziger, S; Gonsalves, P; Weisser, PJDate:Dec 1977The vegetation of the Nylsvley Nature Reserve in the Transvaal Mixed Bushveld is classified hierarchically by the Braun-Blanquet method of vegetation survey. The vegetation is seasonal grassland and deciduous savanna with four floristically ...Read more
Author:Lord, DA; Anderson, FP; Basson, JKDate:Oct 1984The rational development of major projects involving the marine disposal of effluents by pipelines requires the close cooperation of planners, scientists and engineers.
In May 1983, a workshop entitled 'Pipeline Discharges of Effluents to ...Read more
Author:Van Doornum, GAWDate:1971The following notes are extracted from a paper presented by A.H. Kloosterman at a meeting of the Royal Netherlands Institute of Engineers on 19th November, 1970 and published in " De Ingenieur of 2nd April, 1971. In this extract, particular ...Read more
Author:McDonald, DJDate:Mar 1985Swartboschkloof forms part of the Jonkershoek mountain catchment complex at the headwaters of the Eerste River, Cape Province. It has been selected as a primary study site for the Fynbos Biome Project multi-disciplinary studies of Mountain ...Read more
Author:Labuschagne, Philip WDate:Sep 2004A polymer system (polyvinylpyrrolidone + polyvinyl acetate-co-crotonic acid) was successfully identified for use as encapsulation material for sensitive actives using supercritical CO2 as plasticisation medium, having the following properties: ...Read more