Author:Wright, CY; Garland, Rebecca M; Norval, M; Vogel, CDate:Aug 2014Climate change is projected to lead to warmer temperatures, especially in southern Africa, where the warming is predicted to be 2°C higher than the global increase. Given the high burden of disease already associated with environmental factors ...Read more
Author:O'Farrell, Patrick J; Anderson, PML; Milton, SJ; Dean, WRJDate:Jan 2009Human adaptation and response to drought is primarily through evasion or endurance. A review of historical agricultural practices in southern Africa demonstrates evidence of drought evasion response strategies in well-established transhumance ...Read more
Author:Opoku, F; Govender, Krishna; van Sittert, CGCE; Govender, PPDate:Dec 2018Over the past decade, remarkable efforts have been made to design low-cost, non-toxic, stable and efficient photocatalyst for water splitting. In the present work, an effective alternative approach to enhance hydrogen production of SrTiO(sub)3 ...Read more
Author:Broughton, BA; Selig, MSDate:Nov 2006A methodology for the inverse design of non-lifting axisymmetric bodies in compressible flow is presented. In this method, an inverse design approach based on conformal mapping is used to design a set of airfoils in isolation. These airfoils ...Read more
Author:Olatinwo, DD; Abu-Mahfouz, Adnan MI; Hancke, GPDate:Mar 2021This study proposes a hybrid MAC protocol that can efficiently and effectively optimize the communication channel access of a WBAN multi-class system. The proposed protocol consists of two major processes that include the contention phase ...Read more
Author:Moodley, D; Rens, GavinDate:Dec 2016This article presents an agent architecture for controlling an autonomous agent in stochastic, noisy environments. The architecture combines the partially observable Markov decision process (POMDP) model with the belief-desire-intention (BDI) ...Read more
Author:Sikhakhane, K; Rimer, S; Gololo, M; Ouahada, K; Abu-Mahfouz, Adnan MIDate:Sep 2023Ultrasound imaging uses reflected echo signals from high-frequency sound waves transmitted into a body with high water content to create images of the internal soft tissue, bone, and blood flow. Different kinds of noise are introduced during ...Read more
Author:Mboweni, IV; Ramotsoela, DT; Abu-Mahfouz, Adnan MIDate:Apr 2023The protection of critical infrastructure such as water treatment and water distribution systems is crucial for a functioning economy. The use of cyber-physical systems in these systems presents numerous vulnerabilities to attackers. To enhance ...Read more
Author:Chutter, FMDate:1971A general description of the study area be found in part 1(Chutter, 1970), where the fauna other than Cladocera and Copera of store-in-current, marginal vegetation and story backwater has been described. It was found that the streams and ...Read more
Author:Chutter, FMDate:1970Vaal Dam is situated on the elevated plateau which forms the interior of South Africa and is a little less than 1500 m above the level. The source of the most of the streams and rivers flowing into the dam are about 2000 m above sea level, ...Read more
Author:Adams, S; Titus, R; Pietersen, K; Tredoux, G; Harris, CDate:15 Jan 2001The Western Karoo depends entirely on groundwater for domestic and agricultural use. An understanding of the chemical evolution of the groundwater provides insight into the interaction of water with the environment and contributes to better ...Read more
Author:Van Niekerk, Lara; Van der Merwe, JH; Huizinga, PDate:Jan 2005For the past 20 years management of the Bot/Kleinmond estuarine system in the south-western Cape has been based on the premise that, barring intervention, the estuary was naturally evolving into a freshwater coastal lake. This paper presents ...Read more
Author:Cobbing, J; O Dochartaigh, BEDate:Jan 2007Hydrofracturing of new public water supply boreholes in Precambrian crystalline bedrock in Scotland has increased borehole yields by at least one order of magnitude, and made the difference between borehole abandonment and success. In many ...Read more
Author:Fosso-Kankeu, E; Mittal, Hemant; Marx, S; Ray, Suprakas SDate:Sep 2017Hydrogel based bioflocculants namely Gelatin and acrylic acid-co-acrylamide [GL-cl-P(AA-co-AAM)] and hybrid hydrogel composite with good adsorption potential, were synthesized in this study for the treatment of biodiesel wastewater. The two ...Read more
Author:Carter, TJ; Cornish, LADate:Apr 2001The effects of hydrogen on various metals and the use of metal hydrides for hydrogen storage are discussed. The mechanisms of, and differences between, hydrogen embrittlement and hydrogen attack of ferritic steels are compared, common sources ...Read more
Author:Rampai, MM; Mtshali, CB; Seroka, Ntalane S; Khotseng, LDate:Feb 2024One such technology is hydrogen-based which utilizes hydrogen to generate energy without emission of greenhouse gases. The advantage of such technology is the fact that the only by-product is water. Efficient storage is crucial for the practical ...Read more
Author:Langmi, Henrietta W; Ren, Jianwei; North, Brian C; Mathe, Mahlanyane K; Bessarabov, DDate:May 2014Metal-organic frameworks (MOFs) for hydrogen storage have continued to receive intense interest over the past decade. MOFs are a class of organic-inorganic hybrid crystalline materials consisting of metallic moieties that are linked by strong ...Read more