Author:Chemura, A; Nangombe, Shingirai S; Gleixner, S; Chinyoka, S; Gornott, CDate:Jul 2022Southern Africa has been identified as one of the hotspot areas of climate extremes increasing, at the same time many communities in the region are dependent on rain-fed agriculture, which is vulnerable to these rainfall and temperature ...Read more
Author:Nunes, M; Adams, JB; Van Niekerk, LaraDate:Sep 2020Invasive alien aquatic plants (IAAPs) are rapidly spreading in South African estuaries because of anthropogenic nutrient loading and persistent freshwater conditions. This study investigated changes in IAAP cover in relation to development ...Read more
Author:Young, R; Gomez, MH; McDonough, CM; Waniska, RD; Rooney, LWDate:Mar 1993Sorghum grains varying in grain hardness or endosperm texture (soft and intermediate) and starch composition (nonwaxy and waxy) were parboiled. Whole grain (one volume) and water (three volumes) were boiled, soaked for 12 hr, and brought to ...Read more
Author:Alberts, Ronell; Botha, Adèle; Fogwill, ThomasDate:2015Mobile technologies have become a social reality in large parts of the developing world in general and in Africa especially. The large scale connected representativeness of access to and often ownership of mobile devices opens many doors to ...Read more
Author:Slinger, J; Taljaard, Susan; D'Hont, FDate:Jan 2020This book captures the learning from a cross-comparison of seven international inlet or estuary mouth management situations. The conceptual framing is provided by a focus on systems knowledge and its development and use within coastal management. ...Read more
Author:Moschandreas, DJ; Watson, J; D'Abreton, P; Scire, J; Zhu, T; Klein, W; Saksena, SDate:Dec 2002In this chapter, the concept of exposure assessment and its evolution is introduced, and evaluated by critically appraising the pertinent literature as it applies to exposures to Particulate Matter (PM). Exposure measurement or estimation ...Read more
Author:Strauss, K; Brent, AC; Hietkamp, SDate:May 2006Current Life Cycle Impact Assessment (LCIA) procedures have demonstrated certain limitations in the South African manufacturing industry. The aim of this paper is to propose new characterisation and normalisation factors for classified mined ...Read more
Author:Mhlanga, N; Ray, Suprakas SDate:2014This study reports the synthesis, characterisation and thermal properties of polylactide (PLA)/titanium dioxide nanoparticles (TiO(sub2) NPs) composites using the sol–gel method. The percentage weight of TiO(sub2) NP sol was varied from 3, ...Read more
Author:Mafusire, C; Forbes, A; Snedden, Glen C; Michaelis, MMDate:2007A heated horizontal spinning pipe causes gases inside it to assume dynamics resulting in a graded index lens – a spinning pipe gas lens (SPGL). A CFD model is presented which shows that gas exchanges of the SPGL with the surroundings resulting ...Read more
Author:Schneider, F; Draheim, J; Brunne, J; Waibel, P; Wallrabe, UDate:Mar 2010The authors compare the performance and optical quality of two types of adaptive fluidic silicone-membrane lenses. The membranes feature either a homogeneous thickness, or they are shaped resulting in an inhomogeneous cross-section. The lens ...Read more
Author:Madende, M; Kemp, G; Stoychev, Stoyan H; Osthoff, GDate:Oct 2018Copyright: 2018 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website.Read more
Author:Lehutso, Raisibe F; Tancu, Yolanda; Maity, Arjun; Thwala, MelusiDate:Mar 2021Analytical limitations have constrained the determination of nanopollution character from real-world sources such as nano-enabled products (NEPs), thus hindering the development of environmental safety guidelines for engineered nanomaterials ...Read more
Author:Baisitse, TR; Forbes, A; Katumba, G; Botha, JR; Engelbrecht, JAADate:2008In this paper, infrared reflectance spectroscopy was employed to extract information on the optical and electrical properties of metal organic vapour phase epitaxial (MOVPE) grown InAs and InAsSb epilayers. These epitaxial layers were grown ...Read more
Author:Jayaramudu, J; Guduri, BR; Rajulu, AVDate:Mar 2010The new natural fabric Grewia tiliflia was extracted from its tree. This uniaxial fabric was analyzed by chemical, Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy and polarized ...Read more
Author:Brady, D; Beeton, A; Zeevaart, J; Kgaje, C; Van Rantwijk, F; Sheldon, RADate:Mar 2004Bio-catalytic transformations converting aromatic and arylaliphatic nitriles into the analogous related amide or acid were investigated.These studies included synthesis of the beta-substituted nitrile 3-hydroxy-3-phenylpropionitrile, subsequent ...Read more
Author:Jele, TB; Sithole, Bishop B; Lekha, Prabashni; Andrew, Jerome EDate:May 2022In this study, three different pulp and paper mill sludge (PPMS) samples collected from different South African mills were chemically and physically characterised to investigate their suitability for various beneficiation pathways. The overall ...Read more
Author:Zondi, MC; Tekane, Yanga C; Magidimisha, Edwin; Wium, Elsmari; Gopal, Ajith K; Bemont, CDate:Sep 2017Infrared (IR) thermography is a technique used to measure temperature distribution of heat generation in manufacturing processes such as welding. IR thermography is a non-destructive and non-contact method, which makes it favoured for the arc ...Read more
Author:Timme, E; Walwyn, D; Bailey, ADate:May 2009Purple carotenoprotein containing astaxanthin as the prosthetic group was extracted from the carapace shells of Jasus lalandii. The material, with a molecular mass of around 400 000 Da and max 525nm (a-crustacyanin), was readily converted ...Read more
Author:Nthwane, Yvonne B; Tancu, Yolanda; Maity, Arjun; Thwala, MelusiDate:Apr 2019The application of titanium oxide engineered nanomaterials (TiO2 (sub 2) ENMs) in products is dominant in sunscreens and can be release into water systems with relative ease during sunscreen use. The current study examined the physico-chemical ...Read more