Author:Anochie-Boateng, Joseph; Tutumluer, EDate:May 2009Oil sand materials are natural bituminous sand deposits that are rich in bitumen or asphalt content to the extent that oil can be extracted from these deposits. The presence of high viscous bitumen content in the oil sand composition makes ...Read more
Author:Opoku, F; Govender, Krishna; Van Sittert, GCGE; Govender, PPDate:Oct 2017n the 21st century, the growing demand of global energy is one of the key challenges. The photocatalytic generation of hydrogen has attracted extensive attention to discuss the increasing global demand for sustainable and clean energy. However, ...Read more
Author:Louw, DFDate:Nov 2015The build rate of a laser powder bed fusion machine can be increased by increasing the laser power. The current paper shows that the use of higher laser power results in a positive change in impact toughness of Ti6Al4V. Laser powder bed fusion ...Read more
Author:Funke, Nicola S; Claasen, MariusDate:Oct 2017The specific mission supported by this Road Map is: “Unlocking South Africa’s maritime potential through research, development and innovation". The mission supports the following overarching vision: “By 2030 South Africa is globally recognised ...Read more
Author:Murray, K; Wade, PDate:Jan 1996The factors affecting the sound application of an anion-cation balance check to water quality analyses are investigated. It is shown that the carbonate contribution to the total negative charge (in meq/l) is satisfactorily calculated from the ...Read more
Author:Tarboton, WRDate:Sep 1977A provisional avifaunal checklist based on observations made during the period September 1974 to July 1976 is presented. Of 325 species recorded, 197 are classified as resident, 64 as migrant, 14 as sporadic, 13 as vagrant while 37 are of ...Read more
Author:Bello, A; Makgopa, K; Fabiane, M; Dodoo-Ahrin, D; Ozoemena, KI; Manyala, NDate:Oct 2013Few-layer graphene was synthesized on a nickel foam template by chemical vapor deposition. The resulting three-dimensional (3D) graphene was loaded with nickel oxide nanostructures using the successive ionic layer adsorption and reaction ...Read more
Author:Maharaj, ADate:Jun 2012The dispersivity of clay soils in water and its influence on the stability of engineered structures has been a topic of serious concern in civil projects for many years. One of the main problems is the difficulty in positively identifying ...Read more
Author:Pretorius, PJ; Linder, PW; Slabbert, JL; Wade, PWDate:Sep 2001Observed mortalities of Daphnia pulex exposed to a single concentration of zinc in different test waters are explained in terms of the chemical behaviour of zinc in solution, as predicted by chemical speciation modelling. Multivariate correlation ...Read more
Author:Nabarro, FRNDate:15 Aug 1997The author provides a brief overview of the chemical driving forces for rafting in superalloys. Until recently, all theories of the driving force for rafting have considered the compositions of the two phases to be fixed, although accepting ...Read more
Author:Musee, NDate:Jan 2012Nanotechnology is envisaged to address present human needs and secure living comforts of future generations cheaply, faster and more cleanly. To date, nanotechnology's impact on the economy and on our daily lives has been enormous.Read more
Author:Nonjola, Patrick NT; Mathe, Mahlanyane K; Hietkamp, SDate:Dec 2008Synthesis and characterization of anion-exchange membranes (AEMs) using polysulfones is described. The modification process of polysulfones involves two steps: Firstly, by introducing chloromethyl groups followed by quaternization reaction ...Read more
Author:Weideman, E; Van der Walt, LTDate:Jan 1978The relative importance of various parameters such as temperature, concentration and treatment time on the chemical softening and bleaching of phormium fibre, has been investigated on a pilot scale.Read more
Author:Weidman, E; Robinson, GADate:Nov 1981Phormium fibre was softened under different conditions and then spun with the aid of two different core yarns on the DREF system.Read more
Author:Weidmann, E; Grabherr, HDate:Aug 1977Phormium tenax fibres have so far only used for the manufacturing of grain bags and affiliated products.Read more
Author:John, Maya J; Anandjiwala, RDDate:Apr 2009This paper presents an experimental study on the static and dynamic mechanical properties of nonwoven based flax fibre reinforced polypropylene composites. The effect of zein modification on flax fibres is also reported. Flax nonwovens were ...Read more
Author:Nonjola, Patrick NT; Mathe, Mahlanyane K; Modibedi, Remegia MDate:Apr 2013Synthesis of quaternary polysulfone/Titanium dioxide (QPSf/TiO2) nanocomposite membranes by the recasting procedure as suitable electrolyte in alkaline fuel cells is described. The composite membranes were characterized by ionic conductivity ...Read more
Author:Manyatshe, Alusani; Balogun, Mohammed O; Nkambule, TTI; Cele, Zamani ED; Msagati, TAMDate:Nov 2020Sugarcane bagasse is the major solid waste product of the sugarcane industry. As a plant-derived biomass, it is an attractive environmentally friendly alternative to petroleum-based materials. Being a non-food agriculture product, its use as ...Read more
Author:van Vuuren, DSDate:Jan 2011This presentation looks at routes to produce titanium, its basic physical properties and main process routes. It concludes that basic physical properties of the relevant chemicals have major effects on the selection of the chemical route to ...Read more
Author:Faleschini, MT; Myer, MS; Harding, N; Fouché, GerdaDate:Mar 2013Sutherlandia frutescens, one of the medicinal plants of southern Africa, has been widely used to boost the immune system by various ethnic groups. This study aims to provide scientific evidence for in vitro immune modulating activities of ...Read more