Author:Gurtunca, RG; Adams, DJDate:Mar 1991In situ measurements and numerical modelling based on elastic theory showed that backfill stresses are considerably higher than originally thought. This has led to a change in understanding of rockmass behaviour. After describing previous ...Read more
Author:van Zyl, JGDate:1974In investigations concerned with the reduction of exhaust smoke of diesel engines, it was required to calculate the volume of a given mass of petrol at high temperatures.Read more
Author:Nordengen, Paul ADate:Dec 2013The aim of this research was to apply, refine and demonstrate an alternative approach to the design and operation of heavy vehicles in South Africa with improved outcomes in terms of road transport productivity, vehicle safety performance, ...Read more
Author:Van der Merwe, AdèleDate:Apr 2008Parallel to the Open Source Software movement, there is an increased demand and need for free, open access to information resources. The Open Access initiative is characterized by two strategies: namely the promotion of self-archiving or, ...Read more
Author:Jansen van Rensburg, Gerhardus JDate:Sep 2016The Finite Element Method is a powerful tool that can be used to test, improve or better understand an industrially relevant problem. There are numerous Finite Element Analysis (FEA) software packages that operate either in the commercial, ...Read more
Author:Paige-Green, P; Jones, DJDate:Mar 2004The data required for a road materials database was identified and a basic structure formulated during 2003. A set of Excel workbooks and associated worksheets was developed as a foundation for the database and as an interim means of gathering ...Read more
Author:Jones, DJ; Paige-Green, PDate:Mar 2003The data required for a road materials database has been identified and a basic structure formulated. A set of Excel workbooks and associated worksheets has been developed as a foundation for the database and as an interim means of gathering ...Read more
Author:Peach, WDate:Jun 2010Solutions to sustainability problems may be achieved through the use of new technology that reduces wastes and provides development opportunities. The impacts of technologies have to be assessed in structured approaches to provide decision-makers ...Read more
Author:Black, WA; Maasdorp, APBDate:Jun 1984Since ancient times, man has attempted to reduce the flammability of combustible materials. For example, the Egyptians soaked wood in a solution of alum in an attempt to reduce its flammability, while the Romans dipped the material of their ...Read more
Author:Sevenster, PGDate:1964In this study of the physical properties of an inherently brittle material such as coal it is of interest to determine the effect of certain physical properties (such as porosity) on the strength of the substance.Read more
Author:Schoeman, FR; Archibald, REMDate:Sep 1977The authors in their various issues aim at describing twenty species in each issue. Failure to achieve this aim is due, partly to the short intervals between the issue dates, but more specifically to all the work involved in ensuring the ...Read more
Author:Geldenhuys, CJ; Knight, RS; Russel, S; Jarman, MLDate:1988This report lists and defines attributes (both functional and structural) that have been used in other structural classifications of forest vegetation. Field techniques are summarized. The recommended use of each attribute and technique is ...Read more
Author:Sevenster, PGDate:1958It was found necessary to conduct the investigation described in this paper when information on diffusion coefficients of some strongly adsorbed gases was required in the course of other studies on coal at the Institute.Read more
Author:Greyling, T; Huntley, BJDate:Dec 1984This Directory provides detailed information on 155 conservation areas of greater than 1 000 ha administered by government and statutory bodies in the Republics of South Africa, Transkei, Bophuthatswana, Ciskei and Venda, and the Kingdoms of ...Read more
Author:Solsona, FDate:1990This guide will present some disinfection systems, which will be useful in supporting disinfection programmes. The description of the different systems will provide a guideline for the selection of equipment base on balancing the simplicity ...Read more
Author:Brooks, GRDate:Apr 1977This survey of current practice relating to the disposal and recycling of waste paper was commissioned by the Committee for Solid Wastes, through the National Scientific Programmes Unit of the CSIR. It was undertaken by Louis Heyl and Associates, ...Read more
Author:Cowling, RM; Le Maitre, David C; McKenzie, B; Prys-Jones, RP; Van Wilgen, BWDate:1987This volume comprises invited review and research papers dealing with the effects of disturbance on the dynamics of fynbos biome communities. Since fire is the most important disturbance factor in the biome, most contributions concentrate ...Read more
Author:Cooper, Antony K; Eloff, C; Schmitz, PMUDate:Aug 2010This position paper was drafted shortly after the first meeting of the Committee for Spatial Information (CSI), because it was obvious from that first meeting that most of the members of the CSI had little knowledge of spatial data infrastructures ...Read more
Author:Bonapace, ACDate:1971The drag coefficient of a solitary particle when moving relative to a fluid, when rising or falling vertically in a stationary fluid, is a well-known function of the particle Reynolds number.Read more
Author:Heim, FC; Van Doornum, GAWDate:1973A ford Trader diesel engine was operated on the dual fuel system, using diesel oil and methane. A considerable reduction in smoke generation and power loss could be obtained under operation at high altitude by replacing approximately 25% of ...Read more