Author:Fuel Research InstituteDate:1954As explained in previous communications, the Institute has been of the option that the difficulties experienced with the Dense Medium Washery at South African Coal Estate could be largely attributed to changes in the properties of the heavy ...Read more
Author:Tarboton, WRDate:Sep 1977A provisional avifaunal checklist based on observations made during the period September 1974 to July 1976 is presented. Of 325 species recorded, 197 are classified as resident, 64 as migrant, 14 as sporadic, 13 as vagrant while 37 are of ...Read more
Author:Beyers, E; Van Rooyen, DDate:1950Comparatively few investigators have studied the reaction of halogens with coal. Evidence was found that substitution and addition reactions occur and that more hydrochloric or hydro bromic acid may be formed than could be explained by a ...Read more
Author:Savage, W.H.D; Savage, WHDDate:1957The "International Classification of Hard coals by type", published by the United Nations in 1956, consists of primary classification by volatile matter content up to 33% volatile matter (dry ash free) and by calorific value (moist ash free) ...Read more
Author:Atkins, ARDate:Jan 1968The design and calibration of an ergometer for exercising subjects during calorimetric studies in the climate chamber, are described. The ergometer is built into the climatic chamber and forms an integral part of the whole instrumentation ...Read more
Author:SANCORDate:Jan 1978With the ever-increasing demands on the resources of our planet, man's attention during recent years has turned more and more to the resources of the ocean and it is being increasingly recognised that the proper exploitation and conservation ...Read more
Author:Gray, DDate:1978The COED-process, a fluidized-bed pyrolysis coal conversion technique, is described in considerable detail. Using Illinois 6 coal as feedstock for the process, the coal is taken through the pyrolysis stages to produce a raw pyrolysis oil. ...Read more
Author:Maasdorp, APB; Black, WADate:Apr 1983The photochemical degradation of unpigmented and unstabilised polypropylene films can be monitored coloremetrically following reaction of the carbonyl groups produced, with 2,4-dinitrophenylhydrazone produced under acidic conditions.Read more
Author:Van Doornum, G.A.WDate:1968Many smokeless fuels are of low reactivity and thus not very suitable for use in open fire places as the ignition delay is unduly long and rate of heat release is low. It would appear that these properties may be modified in a favorable sense ...Read more
Author:Van Doornum, GAWDate:1967The object of the tests was to compare the relative effectiveness of these fuels and to observe any ash content and the presence of a high proportion of dull material.Read more
Author:Quass, FWDate:1946In order to establish the relative suitable for steam raising purposes of South African anthracite, firing tests were carried out in an experimental furnace on a number of nut size largely on the anthracite.Read more
Author:Van Eeden, GSDate:1965The purpose of these tests was to assess whether anthracites of high ash content or could be used as a low-cost smokeless domestic fuel.Read more
Author:Mogane-Ramahotswa, B; Still, DDate:Jan 1992One of the most important aspects of suitability of water supply is the ability of the community to manage its own scheme. Unlike in urban settlement institutional arrangements for rural water supply are rudimentary. Over the past decade, ...Read more
Author:Ojwang, ADate:2000Partnerships between communities and private companies have been tried and tested in various regions within Africa and the world. Community-Private-Public Partnerships exist in various sectors such as mining, agriculture, tourism and forestry. ...Read more
Author:Kelly, IWDate:May 1975Applying amounts of resin greater than 5 per cent (on mass of cotton) to cotton/polyester blend fabrics and dry curing the fabrics to not improve the easy-care properties of the fabrics to any extent.Read more
Author:Kelly, IWDate:May 1974The physical properties of a series of plain weave fabrics from cotton blended with polyester were measured and compared.Read more
Author:Robinson, GA; Turpie, DWFDate:Oct 1978The performance and physical properties of fibre, yarn and fabric produced from a 64's quality imported merino wool, a Cape merino 64's wool and a 50/50 blend of these has been investigated.Read more
Author:Hunter, L; Smuts, SDate:Feb 1978This report is concerned with the yarn frictional properties, which were not covered in the earlier studies, the knitting performance of the yearns and the physical properties of the resulting fabrics.Read more
Author:Savage, WHDDate:1974At various times complaints have been received from the Transvaal Coal Owners Association and collieries about low calorific values obtained by the Institute on samples taken for the S.A.R locomotive contract.Read more