Author:Pretorius, R; Theron, CC; Marais, TK; Ras, HADate:Nov 1993The effective heat of formation model allows heats of formation to be calculated as a function of the concentration of the reactants at the growth interface. The effective concentration is taken to be the concentration of the liquidus minimum ...Read more
Author:Amigun, BDate:Nov 2009Biofuels are Liquid, solid and gaseous fuel derived from organic matter-biomass-including plant materials and animal waste. This paper is about the state of biofuels in Africa and the initiatives thereof.Read more
Author:O'Connell, Johannes S; Anochie-Boateng, Joseph; Marais, HDate:Aug 2010In South Africa, crumb tyre-modified bitumen commnly known as bitumen-rubber binder has viscosity limits specified by the current edition of TG1: The Use of Modified Bituminous Binders in Road Construction. As the crumb rubber is 'digested', ...Read more
Author:Kinabo, ABD; Mwangama, JB; Lysko, Albert ADate:Mar 2021In industry, mission-critical assignments require special characteristics for their networks. Chief among these requirements is reliability – proven to be even more desired than other characteristics such as low latency. IEEE 802.1 Time ...Read more
Author:Roux, JA; Olivier, WJ; Trethewey, C; Botha, Anton FDate:Nov 2008South Africa does not produce cashmere commercially and presently there is no local cashmere industry. The Boer goat is well known for its meat production and is an established farming enterprise in South Africa. The aim of this study is to ...Read more
Author:Sun, Z; Gebremichael, M; Wang, Q; Wang, J; Sammis, TW; Nickless, ADate:Sep 2013Net radiation is a key component of the energy balance, whose estimation accuracy has an impact on energy flux estimates from satellite data. In typical remote sensing evapotranspiration (ET) algorithms, the outgoing shortwave and longwave ...Read more
Author:Mgangira, Martin B; Paige-Green, PDate:Aug 2008The paper discusses a road rehabilitation project and a sports complex, where the underlying in situ materials were typical African black cotton soils known for their expansive characteristics. Field investigations were undertaken to discern ...Read more
Author:Denneman, E; Steyn, WJVDM; Maina, JW; Sadzik, ESDate:Oct 2008This paper is based on a study into the rutting performance of HMA which forms part of the larger research initiative. The objective of this phase is to identify and develop appropriate test protocols and associated acceptance criteria for ...Read more
Author:Pretorius, CJ; Grove, TDate:Sep 2011The study evaluated diesel particulate matter (DPM) sampling methods used in the South African mining industry. The three-piece cassette respirable, open face and stopper sampling methods were compared with the SKC DPM cassette method to find ...Read more
Author:Dudeni, N; Debba, PraveshDate:Aug 2009Deterministic and stochastic measures of spectral similarity are essential for determining both the geometric characteristics of spectra and variability, respectively. Deterministic measures such as Spectral Angle Mapper (SAM) are useful in ...Read more
Author:Pandelani, Thanyani ADate:Oct 2011Anti-vehicular (AV) landmines and Improvised Explosive Devices (IEDs) are utilized to disable and destroy vehicles and to injure and kill the occupants. They present not only a threat to vehicle occupants during times of conflict, but their ...Read more
Author:Fanta, GB; Pretorius, L; Erasmus, Louwrence DDate:Jun 2015The burden of disease is higher by far in developing countries than in the developed world. Although significant progress has been made towards health related Millennium Development Goals (MDGs) in the past years, developing countries still ...Read more
Author:Govender, NatashaDate:Nov 2009Structure from motion is a widely-used technique in computer vision to perform 3D reconstruction. The 3D structure is recovered by analysing the motion of an object, based on its features, over time. The typical steps involved in SFM are ...Read more
Author:Szewczuk, S; Conradie, Dirk CUDate:Aug 2014Agrément South Africa was established for the assessment and certification of innovative non-standardised construction products, systems, materials, components and processes, which are not fully covered by a South African Bureau of Standards ...Read more
Author:Wattrus, MC; Biffi, M; Pretorius, Cecilia J; Jacobs, DDate:Sep 2016Through an industry wide collaborative project, this paper explores what potential exists for South African underground mines to reduce diesel particulate emissions, where the starting point is a mine using older engine technology (Tier 1 ...Read more
Author:Sibisi, PN; Popoola, API; Arthur, Nana KK; Kubjane, SM; Ngoveni, AS; Kanyane, LRDate:Nov 2018Laser metal deposition provides various benefits over traditional manufacturing, and has since become the research hotspot, as demand for advanced manufacturing persists. The effects of process parameter variation on structural integrity and ...Read more
Author:Lekoadi, Paul M; Tlotleng, Monnamme; Annan, K; Maledi, N; Masina, Bathusile NDate:Feb 2021This study presents the investigation on how heat treatment parameters, which are temperature, cooling method, and residence time, influence the microstructural and hardness properties of Ti6Al4V components produced on Ti6Al4V substrate using ...Read more