Author:Rust, FCDate:Jan 2009There is no doubt that infrastructure in general and specifically transport infrastructure plays a major role in economic development (Weisbrod G 1997, Chapman P et al 2002) as well as in social development (UNCDF 2007). In addition, construction ...Read more
Author:Mbanjwa, MB; Windvoel, TV; Land, KJDate:Oct 2012Droplet-based microfluidics has, in recent years, received increased attention as an important tool for performing numerous
methods in modern day chemistry and biology, such as synthesis of hydrogel microparticles. The droplet-based ...Read more
Author:Nweke, EE; Thimiri Govindaraj, Deepak BDate:Feb 2021One of the critical Global challenges in achieving the UN Sustainable Development Goals 3 Good Health and Well Being is optimizing drug discovery and translational research for unmet medical need in both communicable and non-communicable ...Read more
Author:Walters, Chavon RDate:Jun 2017With increasing frequency countries are faced with a new set of chemicals that are contaminating the environment. These so-called ‘emerging contaminants’ hold potential risk to humans and/or the environment. The challenge is that, generally, ...Read more
Author:Zunckel, M; Piketh, S; Freiman, TDate:Oct 1999The inferential method is applied to estimate dry deposition rates of sulphur at a remote rural site on the South African south-eastern escarpment. Two 2-week intensive monitoring campaigns were conducted during the Ben MacDhui High Altitude ...Read more
Author:Zunckel, M; Turner, CR; Wells, RBDate:Oct 1996A pilot study which uses the inferential method to estimate dry deposition of sulphur on the central Mpumalanga highveld is discussed in this paper. Ambient concentrations of sulphur dioxide, particulates and micro-meteorological measurements ...Read more
Author:Le Roux, D; Stock, WD; Bond, WJ; Maphanga, DDate:May 1996Clonal variation in water use efficiency (WUE), dry mass accumulation and allocation, and stable carbon isotope ratio (delta (13)C) of crude leaf fibre extracts was determined in six clones of Eucalyptus grandis W. Hill ex Maiden grown for ...Read more
Author:De Korte, GJDate:Oct 2013Dense medium processing is the beneficiation process most widely employed in South Africa. Based on the fact that South Africa (and its neighboring countries) is a water-scarce area, dry processing technologies are being evaluated for ...Read more
Author:Ramoelo, Abel; Cho, Moses ADate:Oct 2014For grazing, biomass is the main indicator of rangeland quantity, which is crucial to determine the amount of food available for animals (grazers), including livestock. Livestock production in the rural communities of the world, including ...Read more
Author:Bugan, Richard DH; De Clercq, W; Jovanovic, NebojsaDate:Nov 2010Increased dryland salinity in the Swartland and Overberg regions poses a threat to the bread basket of the Western Cape, water resources in an already water-stressed area, water supply to the industrialised Saldanha region as well as the ...Read more
Author:Wessels, Konrad JDate:2006This chapter describes the current condition of dryland systems with respect to the services they provide and the drivers that determine trends in their provision. Within the context of the mounting global concern caused by land degradation ...Read more
Author:Le Roux, PB; Kroon, S; Bester, WDate:Apr 2016In an attempt to tackle shortcomings of current approaches to collaborating on the development of structured data sets, we present a prototype platform that allows users to share and collaborate on the development of data structures via a web ...Read more
Author:Chikosha, S; Mahlatji, ML; Chikwanda, HKDate:Sep 2012Conclusions drawn from this presentation were that when SPS, HP and Press and Sinter methods were used to form TiPt phase from elemental Ti and Pt powders, Press and Sinter was less successful. Presence of Ti-rich and Pt-rich phases coexisting ...Read more
Author:Taute, BDate:06 Jun 2009In his keynote address on the DST-funded Information Security Centre of Competence, the speaker concentrates on four important issues. These refer to threats and vulnerabilities in Cyberspace (that encompasses all forms of networked, digital ...Read more
Author:Taljaard, Susan; Slinger, JH; Van der Merwe, JDate:Nov 2013Despite the place-based nature of integrated coastal management (ICM) implementation and the importance of considering country-specific knowledge, a number of uniformities in ICM implementation have been distinguished. In this paper, the ...Read more
Author:Oliphant, CJ; Arendse, CJ; Malgas, GF; Motaung, DE; Muller, TFG; Knoesen, DDate:Oct 2009This paper reports on the deposition of crystalline single-helix carbon microcoils, in the as-deposited state, by the hot-wire chemical vapor deposition process without any special preparation of nano-sized transition metal catalysts and ...Read more
Author:Heim, FC; Van Doornum, GAWDate:1973A ford Trader diesel engine was operated on the dual fuel system, using diesel oil and methane. A considerable reduction in smoke generation and power loss could be obtained under operation at high altitude by replacing approximately 25% of ...Read more
Author:Heim, FO; Clark, DDate:1977In view of the desire to conserve oil products, it was decided to attempt to use ethyl alcohol in the place of petrol in a duel-fuel operated diesel engine. Apart from the change of fuel, test conditions have been as described in Report No. ...Read more
Author:Wen, L; Wu, Z; Luo, H; Song, R; Lia, FDate:2015Spinel Li(sub4)Ti(sub5)O(sub12) has become an alternative material to replace graphite anodes in terms of solving safety issues and improving battery life-time. Unfortunately, as Li(sub4)Ti(sub5)O(sub12) is an insulator, the low electrical ...Read more