Author:Kunstman, FH; Hamersma, JCDate:1955The chemical behavior of germanium has been studied extensively but its present economic value results from its physical properties.Read more
Author:Kunstmann, FH; Harris, JFDate:1966Apart from the major constituents of the ash of a coal, every coal contains a great number of trace elements. In many cases the suitability of a coal for certain purposes depends on the concentration of these trace elements in the coal. The ...Read more
Author:Davis, PC; La Grange, CC; Coetzee, SDDate:1950During September 1950, the Institute was notified that portions of the core from a borehole drilled on the farm Kalabasvlakte 3749 were apparently impregnated with oil. Samples of the core were obtained and examined and it was conducted that ...Read more
Author:Morant, PDDate:Jul 1984In this report available historical information on Olifants estuary and abiotic and biotic characteristics found in the estuary are presented. The Olifants River system was explored early in the colonization of the Cape by European settlers. ...Read more
Author:Heinecken, TJE; St J Damstra, KDate:Jul 1983In this report available historical information on Onrus estuary is presented. The lower reach of the Onrus River or Onrust River as it is also known, has a small fresh water lagoon at its mouth. The area was originally part of a farm. According ...Read more
Author:Burger, E; Van Doornum, GAW; Van Heerden, RBDate:1965Due to the importance of limiting the degree of air pollution, caused mostly by coal fires, it has become necessary to seek a practicable solution to the problem of smoke generation in open hearth fires, where combustion is uncontrolled.Read more
Author:Kuiters, ADate:1967At the request of the Anthracite Producers' Association, an officer of the Institute demonstrated the feasibility of firing mixtures of anthracite and bituminous coal at the Walvis Bay Power Station.Read more
Author:Kuiters, ADate:1967At the request of the Anthracite Producers' Association, an officer of the institute demonstrated the feasibility of firing mixtures of anthracite and bituminous coal at the Walvis Bay Power Station.Read more
Author:Van Doornum, GAWDate:1968The fantom fire was tested at the request of Messrs. Field Aircraft Services Africa, Limited, the importers of the appliance. During the experiment, the fire was installed in a 16" standard fireback (c.f. B.S. No. 1251) which forms part of ...Read more
Author:Van Doornum, GAWDate:1967In the experiments covered in this report, a fury No. 3 hot water boiler was operated on Witbank bituminous coal (Waterpan), on anthracite (Natal Ammonium) and mixtures of these two fuels.Read more
Author:Van Doornum, GAWDate:1967In the tests performed on the fury no. 3 boiler two types of semi - anthracite (New Cambrian and Balgray) were fired in the same manner as set out in the first progress report (Technical Memorandum No. 15 of 1965). In addition one test was ...Read more
Author:Mthunzi-Kufa, PatienceDate:Feb 2010Recently, laser light sources of different regimes have emerged as an essential tool in the biophotonics research area. Classic applications include, for example: manipulating single cells and their subcellular organelles, sorting cells in ...Read more
Author:Semmelink, CJ; Groenewald, M; Du Plessis, EDate:Mar 1994The report deals with the site investigations in connection with the compaction standards, that is a comparison between actual in situ dry densities achieved compared to specification requirements, for road layer work for the periods 91/92, ...Read more
Author:Zulu, PN; Botha, G; Barnard, EDate:2007Two methods for objectively measuring similarities and dissimilarities between the 11 official languages of South Africa are described. The first concerns the use of n-grams. The confusions between different languages in a text-based language ...Read more
Author:Cairns, RIDate:2000Small-scale timber growers access commercial timber markets in KwaZulu-Natal through three mechanisms. These are; highly structured contractual arrangements (SAPPI, Lima and Mondi); membership in commercial forest-owners associations or timber ...Read more
Author:Roux, Michael P; Sallie, Ismail M; Nordengen, Paul A; Ras, H; De Franca, Volanda MPDate:Mar 2005Not only do overloaded vehicles pose an increased safety risk on the road (reduced stability and braking efficiency etc.), but they also accelerate the rate of deterioration of the road network and increase road maintenance costs, which in ...Read more
Author:Sevenster, PGDate:1951The primary objective of the present investigation was to ascertain the oxygen absorption characteristics of South African coals using a technique based on that developed by Winmill.Read more
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