Author:Reddy, J; Erasmus, C; Mlotshwa, L; Taylor, J; Dlamini, Nomusa RDate:01 Sep 2010Sorghum, a staple food in Africa, does not contain adequate amounts of provitamin A carotenoids to address the problem of vitamin A deficiency which affects up to 31 million people on the continent1. One attempt to solve this problem is through ...Read more
Author:Mokotedi, O; Watt, P; Pammenter, NDate:Nov 2011The purpose of this study was to deepen our understanding of the field performance of micro- and macro-propagated Eucalyptus grandis x nitens (GN), in comparison with seed-propagated E. grandis and E. nitens. The emphasis was on the relationship ...Read more
Author:Mathe, Ntombizodwa R; Nkosi, SS; Motaung, DE; Scriba, Manfred R; Coville, NJDate:May 2015The electronic, magnetic and electrocatalytic properties of bimetallic thiol-capped Pt/Co and Pt/Ni nanoparticles were synthesised using two reducing agents, NaBH(sub4) and N(sub2)H(sub4). X-ray diffraction analysis of the nanoparticles showed ...Read more
Author:Steenkamp, Anton J; Berman, Robert B; Kemp, Lana; De Saxe, Christopher CDate:Jul 2019The paved road network is a critical asset to any economy. South Africa has a paved road network that has an estimated value in excess of R2 trillion. This asset is however under threat as there was a backlog in maintenance of more than R197 ...Read more
Author:Steyn, WJvdM; Haw, MDate:Jul 2005Road engineers usually maintain roads with the objective of supplying a road surface with a certain serviceability standard. This serviceability standard typically include aspects such as the allowable rutting, skid resistance and riding ...Read more
Author:Mvelase, Gculisile M; Anochie-Boateng, Joseph; Msibi, LLDate:Jul 2016The railway industry in South Africa is facing a problem where passage of trains on the heavy coal haul lines are causing degradation by means of wear (roundness) of ballast materials, and consequently, leading to differential track settlement ...Read more
Author:Anochie-Boateng, Joseph; Komba, Julius J; Ventura, D; Verhaeghe, Benoit MJADate:Sep 2011This study emanated from the revision of South African mechanistic-empirical pavement design method. At the CSIR road pavement laboratory, the bulk relative density (BRD) of compacted hot-mix asphalt (HMA) mixes is determined on cores and ...Read more
Author:Louw, Daniel F; Pistorius, PGHDate:Apr 2019Ti-6Al-(sub4)V produced by laser powder bed fusion can achieve mechanical properties similar to its wrought counterpart if an appropriate post-process heat treatment is applied. The response of the material to post-process heat treatment ...Read more
Author:Erinosho, MF; Akinlabi, ET; Pityana, Sisa LDate:2016In laser metal deposition (LMD), good bonding between two similar or dissimilar materials can be achieved if the interrelationships between the processing parameters are well understood. LMD was conducted by varying the scanning speed and ...Read more
Author:Bayode, A; Akinlabi, ET; Pityana, Sisa L; Shongwe, MBDate:Feb 2017Laser metal deposition (LMD) is one of the additive manufacturing technologies that is used in the production of fully dense parts layer by layer. This innovative manufacturing process has the potential to reduce the weight, time and cost of ...Read more
Author:Mfusi, BJ; Tshabalala, Lerato C; Popoola, API; Mathe, Ntombizodwa RDate:Oct 2018Additive manufacturing is currently applied across a broad material selection and it is growing in production volume and economic impact. Aluminium is one of the materials that play a significant role in the aerospace industry because of its ...Read more
Author:Pretorius, CJDate:Jul 2011The study evaluated five size-selective samplers used in the South African mining industry to determine how their performance affects the X-ray powder diffraction (XRD) response when respirable dust samples are analysed for quartz using ...Read more
Author:Karsten, AE; Singh, ADate:Jun 2009Computer modeling can be a valuable tool to determine the absorption of laser light in different skin layers. For this study, the optical properties of three different skin tumors were used in the model to evaluate the effect on penetration ...Read more
Author:Mienie, S; Basappa Ayanna, Manjunath; Pratt, Lawrence E; Roro, Kittessa T; Diale, MDate:Jun 2018Soiling is an important and unpredictable factor that affects PV plant performance. Soiling is dependent on so many factors making it hard to quantify and accurately incorporate in PV prediction models and levelized cost of electricity (LCOE). ...Read more
Author:Ssemakalu, CC; Ubomba-Jaswa, Eunice; Motaung, KS; Pillay, MDate:Jun 2015The use of solar irradiation to sterilize water prior to its consumption has resulted in the reduction of water related illnesses in waterborne disease endemic communities worldwide. Currently, research on solar water disinfection (SODIS) has ...Read more
Author:Mazibuko, NE; Curle, UADate:Jun 2011During rheo-high pressure die casting (R-HPDC) of Al-Zn-Mg-Cu alloys a coarse eutectic phase is formed. This eutectic phase is difficult to take into solution because of its size and it would require longer solution heat treatment times. The ...Read more
Author:Moshokoa, Nthabiseng; Raganya, Mampai L; Obadele, BA; Olubambi, PA; Machaka, RonaldDate:2020The present study investigates the effect of solution treatment on the microstructure and mechanical properties of as-cast Ti-Mo alloys. The two alloys (Ti-8Mo and Ti-9Mo) were fabricated using a commercially available Arc re-melting furnace. ...Read more
Author:Spangenberg, D-M; Dudley, Angela L; Neethling, P; Forbes, A; Rohwer, EDate:Aug 2013SLMs used for spatial modulation of lasers are often used in conjunction with very narrow bandwidth laser light where diffractive dispersion could be approximated as a constant. It is known that diffractive dispersion is inversely proportional ...Read more
Author:Masete, Mosimanegape S; Muchavi, Noluntu S; Chikosha, SilethelweDate:Dec 2018Determination of tensile properties of materials is required to reliably predict performance of engineering materials in service and for design purposes. Tensile properties are also used as a measure of product quality. Various testing standards ...Read more
Author:Badenhorst, JAC; Davel, MHDate:Nov 2007The authors analyse the effect of speech rate variation on Afrikaans phone stability from an acoustic perspective. Specifically they introduce two techniques for the acoustic analysis of speech rate variation, apply these techniques to an ...Read more