Author:Miteff, SDate:Oct 2012In this presentation the author introduces the Eduroam initiative, and explains how it combines existing wireless security technologies in a novel way, to enable secure global roaming for end users at university campuses and research institutions.Read more
Author:Grindley, JRDate:Dec 1982This report provides historical information on Eerste River, catchment, abiotic and biotic characteristics. The Eerste River rises on Dwarsberg 60 km east of Cape Town as the head of Jonkershoek. The river catchment covers the eastern part ...Read more
Author:Moyo, HPM; Dube, SDate:May 2010The objective of the study was to quantify the water table fluctuations in the Tsomo valley due to the presence of Acacia mearnsii.Read more
Author:Roro, Kittessa T; Mwakikunga, Bonex W; Tile, N; Yalisi, B; Forbes, ADate:May 2012Varying amounts of dispersed multiwalled carbon nanotubes in NiO have been used to develop composites that absorb the solar energy very well but lose very little through emission. Determination of absorptance, asol, and emissivity, ether, ...Read more
Author:Crookes, DJ; Blignaut, JN; Le Maitre, David CDate:Nov 2020We developed a two-biome (grasslands and fynbos) system dynamics model simulating invasions of three invasive alien plant species – black wattle (Acacia mearnsii) and two pine species (Pinus patula and Pinus pinaster) – and some of the ...Read more
Author:Greben, HA; Sigama, NJDate:Nov 2008Vast volumes of acid mine drainage (AMD) is still being generated in South Africa, due to decant from both active and closed mines. Research to find a cost effective, environmentally friendly treatment system to reduce the salinity and to ...Read more
Author:Muller, T; Ramashia, TA; Motaung, David E; Cummings, F; Malgas, G; Oliphant, C; Arendse, CDate:Apr 2016Concerted efforts need to be undertaken to overcome limited efficiencies and instability issues in order to ensure a niche for organic photovoltaics (OPVs) in the PV market. Recent improvements on tandem structures aside, in order to achieve ...Read more
Author:Masete, Mosimanegape S; Mutombo, K; Siyasiya, C; Stumpf, WDate:Jul 2015The effects of ageing temperature, time and cooling medium on the microstructure and hardness of a solution treated Ti6Al4V alloy were investigated. The furnace cooling after ageing for 0.5 hours gave a homogenous structure with higher hardness ...Read more
Author:Menya, E; Olupot, PW; Storz, H; Lubwama, M; Kiros, Y; Mathew, Maya JDate:2020Thermal behavior and chemical properties of selected raw and NaOH-pretreated rice husk varieties were investigated. NaOH-pretreatment process involved soaking 5 g rice husk samples in 40 mL of 2%w/v NaOH, shaking (400 rpm) and heating (50 °C) ...Read more
Author:Teffo, ML; Nyakane, NE; Seerane, M; Shongwe, MB; Machaka, RolandDate:Feb 2021The allotropic behavior of titanium is affected by many factors such as processing temperature and alloying elements. Using processing method with parameters that enhaces properties of the resulting alloy is imperative. In this study, CP-Ti, ...Read more
Author:John, Maya J; Tlili, R; Anandjiwala, RD; Boudenne, A; Ibos, LDate:Mar 2012The study on heat transport in composites is of fundamental importance in engineering design and for tailoring thermal and mechanical behaviour of materials. In this study, the thermal conductivity and thermal diffusivity of flax reinforced ...Read more
Author:Nicolaides, K; Nortman, LP; Tapson, JDate:Jan 2009Increasing operating depths of autonomous underwater vehicles have necessitated the development of underwater transducers that can operate at a greater depth. This paper investigates the possibility of incorporating rigid backing material ...Read more
Author:Ogunniran, ES; Sadiku, R; Ray, Suprakas S; Luruli, NDate:Aug 2011A composite of boehmite alumina nanoparticles and a PP/PA12 blend is prepared. WAXD and SEM suggest that a low filler loading enhances the coalescence of PA12, whereas a higher loading reverses the situation. DSC, DMA and TGA reveal that the ...Read more
Author:Bolokang, S; Banganayi, C; Pasha, MDate:2009In the current study, the amount of carbon and the effects of milling parameters in production of tungsten-carbide (WC) powder were evaluated. Mechanical alloying (MA) of elemental W and C powders at different carbon-rich and carbon-deficient ...Read more
Author:Munyati, C; Economon, EB; Malahlela, OEDate:Jul 2013The proliferation of woody plant species on savanna rangelands (i.e. bush encroachment) degrades rangeland quality, thereby threatening the biodiversity conservation effort as well as pastoral farming. Hyperspectral remote sensing offers ...Read more
Author:Nyembe, DW; Musee, N; Mamba, BB; Mamba, VDate:Aug 2013Algae (Pseudokirchnierella subcapitata) were exposed to pristine (p-) and oxidised (o-) forms of carbon nanospheres (CNSs) at concentrations of 0.1, 0.18, 0.32, 0.46 and 20 mg/L. At each concentration, the CNSs were sonicated for 1-h in three ...Read more
Author:Galuszynski, SDate:Jul 1984A new method, allowing to stimulate the yarn assembly in a woven fabric for measuring yarn to yarn frictional force, is described.Read more
Author:Savage, WHDDate:1969No corresponding determination were made on the same samples at the two temperatures, so that no valid comparison can be made.Read more
Author:Jacob John, Maya; Francis, B; Varughese, KT; Thomas, SDate:Feb 2008The effects of chemical modification of fiber surface in sisal–oil palm reinforced natural rubber green composites have been studied. Composites were prepared using fibers treated with varying concentrations of sodium hydroxide solution and ...Read more