Author:Makgabutlane, M; Wright, CYDate:Sep 2013Pretoria receives a fair amount of solar ultraviolet radiation (UVR). Certain meteorological factors affect the amount of solar UVR that reaches the ground. The most dominant influencing meteorological factors are stratospheric ozone, cloud ...Read more
Author:Nkosi, Funeka; Palaniyandy, Nithyadharseni; Raju, Kumar; Ozoemena, KDate:Oct 2020Commercialization of lithium-manganese rich oxides (LMR-NMC) cathodes for lithium-ion batteries is hindered by shortcomings such as severe capacity fade and poor rate capability. This work reveals the synergetic effect of the structure and ...Read more
Author:Müller, H; Masuku, EP; Curle, UA; Pistorius, PC; Knutsen, RD; Govender, GDate:Mar 2011A201 aluminium alloy is a high strength casting alloy with a nominal composition of Al-4.6Cu-0.3Mg-0.6Ag. It is strengthened by the O(Al2Cu) phase and the ’(Al2Cu) phase during heat treatment. Further strengthening of this alloy system can ...Read more
Author:Raji, SA; Pityana, Sisa L; Popoola, API; Popoola, OM; Arthur, Nana KK; Tlotleng, MonnammeDate:Oct 2021In this work, the microstructure and nanoindentation hardness properties of Ti-Al-Si-xMo alloys produced through laser in-situ alloying using laser engineered net shaping (LENS) technology were investigated. The microstructures and phases ...Read more
Author:Omarjee, Aadila; Taljaard, Susan; Weerts, Steven P; Adams, JBDate:Nov 2020Land-based nutrient enrichment of estuarine waters is emerging as a major factor influencing pH and has been referred to as “the other eutrophication problem”. Small temporarily closed estuaries with high residence times are likely to be ...Read more
Author:Soclo, WP; Igue, AM; Mwenge Kahinda, Jean-Marc; Boukari, M; Agbossou, KEDate:Oct 2015The derivative function f of the cumulative particle-size distribution curve of certain soils has two (02) local maxima (two modes) in weight percentage for the particle-size ranges of sand and clay (one in the range of clays and the other ...Read more
Author:Salehiyan, Reza; Ray, Suprakas SDate:May 2018This article highlights the recent research achievements regarding the development of nanoclay-containing biodegradable composites of polylactide (PLA)-based immiscible blends. The structure–property relationships of particular blends, namely, ...Read more
Author:Nofar, M; Salehiyan, Reza; Ray, Suprakas SDate:Jun 2021This article critically reviews the influence of different nanoparticle localization on the final structure-property relationships of polylactide (PLA)-based blend nanocomposites. The effects of kinetics and thermodynamic parameters on the ...Read more
Author:Erasmus, TCDate:1964These experiments were designed to assess the influence of near gravity material on the performance of the Drewboy washer.Read more
Author:Schmid, OEDate:1992This study examines the effect that a partial substitution of nickel with nitrogen has on the deformation behaviour of a metastable austenitic stainless steel, AISI 301. The effect on the tensile deformation behaviour is studied in detail ...Read more
Author:Seerane, Mandy; Ndlangamandla, P; Machaka, RonaldDate:Oct 2016Metal injection moulding (MIM) is a near-net-shaping powder metallurgy technique suitable for the cost-effective mass production of small and complex components. In this paper, the effects of the metal powder particle size on the final ...Read more
Author:Seerane, Mandy N; Ndlangamandla, P; Machaka, RonaldDate:Oct 2016Metal injection moulding (MIM) is a near-net-shaping powder metallurgy technique suitable for the cost-effective mass production of small and complex components. In this paper, the effects of the metal powder particle size on the final ...Read more
Author:Van Rooyen, IJ; Neethling, JH; Henry, A; Janzén, EDate:Oct 2010The integrity and property behaviour of the SiC layer of the TRISO coated particle for high temperature reactors (HTR) are very important. The SiC is the main barrier for gaseous and metallic fission product release. An investigation was ...Read more
Author:Mhlongo, Gugu H; Dhlamini, MS; Ntwaeaborwa, OM; Swart, HC; Hillie, KTDate:Jul 2011Tb3+-Pr3+, and Eu3+-Pr3+ ion pairs co-doped in a SiO2 matrix were prepared by a sol-gel method. Co-doping of Eu3+ and Tb3+ ions with Pr3+ in SiO2 resulted in the quenching of Eu3+ and Tb3+ emissions with increasing Pr3+ concentrations. The ...Read more
Author:Chapple, Stephen A; Ferg, EDate:Nov 2006Cotton has many desirable properties, but is flammable. The flame retardant treatment of cotton is an important textile process. To study the effect of a sol-gel phosphate-based flame-retardant coating on fabric properties (flammability, ...Read more
Author:Moller, H; Govender, G; Rossouw, P; Stumpf, WDate:2011Alloy A356 is one of the most popular alloys used for semisolid metal forming. The heat treatment cycles that are currently applied to semisolid processed components are mostly those that are in use for dendritic casting alloys. The assumption ...Read more
Author:Arthur, Nana KK; Malabi, Khorommbi P; Baloyi, Pincuss; Moller, H; Pityana, Sisa LDate:Nov 2016The Optomec Laser Engineered Net Shaping (LENS®) system is a laser-based platform that relies on computer-aided design (CAD) files to design and produce 3D printed components. This system is comprised of a 1 kW laser used to melt metal powders ...Read more
Author:Squelch, AP; Milev, AM; Acheampong, E; Dlokweni, T; Janse van Rensburg, A; Watson, BPDate:Nov 2001The general influence of regional support on local stope conditions is not always well
understood and a number of anomalous conditions, both positive and negative, have been reported in the vicinity of regional supports. Mining in similar ...Read more
Author:Matsui, K; Hachiya, Y; Maina, JW; Kikuta, Y; Nagae, TDate:Jan 2006This paper presents recentupdates of DBALM (Dynamic Back Analysis for Layer Moduli) software whose solver is based on exi-symmetric FEM and was first developed in 1993. Examples of airfield pavement application are also presented. The results ...Read more