Author:Lovelock, HDL; Kinds, J; Young, PMDate:1998Fourteen commonly used commercially available, WC 12Co thermal spray powders were characterised in terms of their particle size distribution, surface morphology, cross-sectional morphology, and phase composition. Based on the results, four ...Read more
Author:Ngwenya, NS; Thambiran, TirushaDate:Oct 2014The City of Johannesburg (CoJ) is characterized by numerous industries ranging from heavy industries to the service provision industry. The aim of this study was to analyse the air quality risk in the CoJ within the context of the implementation ...Read more
Author:Grobler, Inus; Gitau, MNDate:Jun 2013High density high switching frequency power converter conducted EMC had been analysed, modelling the noise source and noise path, while providing accurate conducted EMC noise limits comparable to accredited noise measurements up to 100 MHz. ...Read more
Author:Grobler, Inus; Gitau, MNDate:Sep 2013High density high switching frequency power converter conducted EMC had been analysed, modelling the noise source and noise path, while providing accurate conducted EMC noise limits comparable to accredited noise measurements up to 100 MHz. ...Read more
Author:Olivier, Marius; Mostert, FJDate:Aug 2013A method to optimise the geometry, explosive charge mass and volume of an argon bomb for specific lighting requirements has been proposed. The method is specifically aimed at applications that require photographic diagnostics with ultra-high ...Read more
Author:Dudley, Angela L; Naidoo, Darryl; Forbes, ADate:Sep 2016We show how one can determine the various properties of light, from the modal content of laser beams to decoding the information stored in optical fields carrying orbital angular momentum, by performing a modal decomposition. Although the ...Read more
Author:Olivier, Marius; Mostert, FJ; Snyman, IMDate:2013The light output from Argon-bombs was investigated by means of ultra high speed photography (Cordin Model 550-32 camera) and locally developed photodiode sensors. Tubes of various sizes were inflated with Argon gas, and were detonated on one ...Read more
Author:Ntshidi, Zanele; Gush, Mark B; Dzikiti, Sebinasi; Le Maitre, David CDate:Apr 2018Invasive alien plants (IAPs) pose a serious threat to the already limited water resources in dry countries like South Africa which are facing increasing water shortages. Much of South Africa is expected to get drier in future due to climate ...Read more
Author:Raji, Sadiq Abiola; Popoola, API; Pityana, Sisa L; Popoola, OMDate:Jul 2020The high strength-to-weight ratio property of titanium aluminide (TiAl) based intermetallic alloys makes researchers regard this type of material as a potential replacement for the heavier superalloys of nickel. These alloys have been applied ...Read more
Author:Veldkornet, DA; Adams, JB; Van Niekerk, LaraDate:Nov 2015This study investigated whether the current lateral boundary for estuaries in South Africa, i.e. the estuarine functional zone (EFZ), includes all estuarine habitats. The EFZ covers 173 930 ha in 304 estuaries/outlets nationally. Field surveys ...Read more
Author:Schulze, JEDate:Sep 1968This paper which is a continuation of technical report no .95, reports on some additional physical properties of Swiss and French double pique fabrics knitted with the same yarn at three different ratios of yarn.Read more
Author:Tlotleng, Monnamme; Masina, Bathusile N; Pityana, Sisa LDate:Jan 2017The use of titanium aluminides as high temperature materials in the aerospace and automobile industries is becoming a reality since their early research and development in 1955. Their mechanical properties at elevated temperatures make them ...Read more
Author:Kortidis, Ioannis; Swart, HC; Ray, Suprakas S; Motaung, David EDate:Apr 2019This study investigates the room temperature (RT) gas-sensing and ferromagnetic
behavior of p-type materials based on a comparison of NiO, Mn3O4, and CuO
nanostructures prepared using a hydrothermal method. The Mn3O4 nanorods based
sensor ...Read more
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:Owonubi, SJ; Aderibigbe, BA; Mukwevho, E; Sadiku, ER; Ray, Suprakas SDate:Mar 2018In this research, hydrogel biocomposites were prepared from whey protein isolate (WPI), reduced graphene oxide (rGO), and synthetic polymers in varied ratios. Their physicochemical properties were evaluated by FTIR, SEM, TGA, AFM, and TEM. ...Read more
Author:Greben, JM; Gledhill, Irvy MA; Cooper, Antony K; De Villiers, RDate:Jan 2010The authors examine the question of stability of breakwater structures using the simulation software PhysX. This “physics engine” can be used to construct various packings of breakwater elements, each of which can be used to analyze the damage ...Read more
Author:May, F; Mikes, D; Bugan, Richard DH; Jovanovic, Nebojsa; Rozanov, ADate:Nov 2010In the use of unsaturated zone methods to estimate recharge, the basic assumption is made that recharge occurs by means of diffusive processes (i.e. piston flow occurs). In fractured environments the reliability of recharge estimate have been ...Read more
Author:Makoana, Nkutwane W; Yadroitsava, I; Möller, H; Yadroitsev, IDate:2018Global industrial adoption of laser-based powder bed fusion (LPBF) technology is still limited by the production speed, the size of the build envelope, and therefore the maximum part size that can be produced. The cost of LPBF can be driven ...Read more