Author:Heyns, Johan A; Malan, AG; Harms, TM; Oxtoby, Oliver FDate:May 2013This paper presents a weakly compressible volume-of-fluid formulation for modelling immiscible high density ratio two-fluid flow under low Mach number conditions. This follows findings of experimental analyses that concluded the compressibility ...Read more
Author:Curle, UA; Ivanchev, LDate:Sep 2010Rheocasting of plates in Al alloy 359 reinforced with SiC at 11%, 27% and 50% (volume fractions) exhibits the capability of the council for scientific and industrial research-rheocasting system (CSIR-RCS) in rheo-processing and high pressure ...Read more
Author:Singh, NavinDate:Mar 2017The South African mining industry has made a significant contribution to the country's economy for more than a century. Changes in legislation for mining licences, stricter health and safety targets, and stronger focus on reducing the impact ...Read more
Author:Adeyeye, M; Makitla, I; Fogwill, TDate:Aug 2013Web Real-Time Communication (WebRTC) introduces real-time multimedia communication as native capabilities of Web browsers. With the adoption of WebRTC the Web browsers will be able to use WebRTC to communicate with one another (peer-to-peer), ...Read more
Author:Du Plessis, WPDate:Sep 2011A version of the iterative Fourier technique (IFT) for the design of thinned antenna arrays with weighted elements is presented. The structure of the algorithm means that it is well suited to the design of weighted thinned arrays with low ...Read more
Author:Haywood, Lorren K; De Lange, Willem J; Musvoto, Constansia D; De Wet, BenitaDate:Jan 2021As intermediaries between producers, manufacturers and consumers, retailers are uniquely positioned to influence production practices and consumption trends. Supermarket retailers are increasingly imposing responsibility on their suppliers ...Read more
Author:Funke, Nicola S; Meissner, Richard; Nienaber, S; Ntombela, CDate:Jan 2014It has been 16 years since the promulgation of the National Water Act, which has the decentralisation of water resource management as a core focus. What do we know of these water institutions that are supposed to govern our water resources, ...Read more
Author:Sampson, L; Rust, FC; Smit, Michelle ADate:Oct 2022It is estimated that 80% of the developing world’s poor live in rural areas. Low volume rural roads account for 80 to 90% of the road infrastructure in most developing countries and are critical to the access and mobility of rural communities. ...Read more
Author:Coetzee, S; Cooper, Antony KDate:Nov 2007In this paper, the authors illustrate the need for standardized addresses in South Africa by describing scenarios where standardized addresses are required, or where standardized addresses would improve the current situation. They present the ...Read more
Author:Archibald, SA; Roy, DP; Van Wilgen, BW; Scholes, RJDate:Mar 2009The factors controlling the extent of fire in Africa south of the equator were investigated using moderate resolution (500 m) satellite-derived burned area maps and spatial data on the environmental factors thought to affect burnt area. A ...Read more
Author:Meissner, Richard; Jovanovic, Nebojsa; Petersen, Chantel RDate:Sep 2017The uptake of scientific knowledge is not always a grand affair. Many observers assume that scientists need to communicate with high-ranking government officials to influence policy. Grandiosely seen, scientists’ views and understandings are ...Read more
Author:Pretorius, CJ; Chesalokile, TDate:Mar 2013The ISO/IEC 17025 Standard was developed by the International Standards Organisation (ISO) to provide a mechanism to enable laboratories to manage the quality of their analytical results and to produce internationally comparable results. The ...Read more
Author:Williams, BG; Gouws, E; Karim, SSADate:Jun 2000Demographic forecasting models of the South African population, incorporating geographical distribution and age prevalence data on HIV infection, have been used to predict future mortality due to AIDS. In year 2010, approximately 500 000 ...Read more
Author:Williams, BG; Gouws, E; Karim, SSADate:Jun 2000This article covers many aspects of the epidemic of HIV/AIDS in South Africa. They range from the development of vaccine to the behaviour of adolescents. But they also show that authors have failed so far to have a significant impact on the ...Read more
Author:Spangenberg, D-M; Dudley, Angela L; Neethling, PH; Rohwer, EG; Forbes, ADate:2014Spatial light modulators are ubiquitous tools for wavefront control and laser beam shaping but have traditionally been used with monochromatic sources due to the inherent wavelength dependence of the calibration process and subsequent phase ...Read more
Author:Meissner, RichardDate:Jan 2014The purpose of this paper is to introduce a framework to analyse water politics and governance in order to highlight aspects that are lesser known within the South African water discourse and to introduce and further a critical understanding ...Read more
Author:Mapeto, T; Louw, J; Gush, Mark B; Pauw, JDate:Mar 2018In a water-scarce country such as South Africa, timber and fibre production often stands in conflict with catchment water yields. The optimal provision of both is sought. Forest hydrological experiments improve our understanding of the ...Read more