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
Author:Chinecherem, A; Kebede, Mesfin ADate:Nov 2021The need for increased energy security in the nation has diverted energy sources from conventional forms to the use of fuel cells. Fuel cells are generally accepted for electricity generation due to their increased conversion efficiency, ...Read more
Author:Shela, E; Liu, F; Wang, T; Farrag, M; Liu, J; Yacout, N; Kebede, Mesfin A; Sharma, N; Fan, LZDate:Apr 2020With a low cost and high volumetric capacity, rechargeable magnesium batteries (RMBs) have emerged as promising candidates for post-lithium ion batteries. The kinetically sluggish Mg2+ insertion/extraction in the host lattice and the ...Read more
Author:Gonçalves, DPDate:Sep 2015The standard definition (ISO 15288, 2008) of the concept of a system is not complete and is the definition of a closed system. Such a definition is inadequate for systems engineering. A use-based definition is proposed which spans the open-closed ...Read more
Author:Steyn, JM; Odendaal, JW; Joubert, JDate:2009Paper presents a dual-band dual-polarized antenna array design for WLAN applications. Four double-dipole elements are orthogonally interleaved to facilitate operation in both the standard WLAN frequency bands (IEEE 802.11b and IEEE 802.11a) ...Read more
Author:Nofar, M; Salehiyan, Reza; Ciftci, U; Jalali, A; Durmus, ADate:Feb 2020In this study, binary and ternary immiscible blends of polylactide (PLA) with poly[(butylene adipate)-co-terephthalate] (PBAT) and poly[(butylene succinate)-co-adipate] (PBSA) were prepared through an injectionmolding (IM) process. Blend ...Read more
Author:Paige-Green, PDate:Feb 2007One of the most important materials for the construction of high quality pavement layers in roads in South Africa is the Basic Crystalline group of rocks. The major deposits of these materials are associated with the dolerites and basaltic ...Read more
Author:Van Rensburg, NJJDate:Dec 1972The use of titanium tetrachloride and antimony oxide as flame-retarding agents for cotton was investigated.Read more
Author:de Wet, p; Mather, A; Theron, ADate:Oct 2010This presentation provides a short background and history of the Durban Bay monitoring area, and then progresses to providing maps of the areas monitored. Beach survey data is discussed, and the effects of sandmining touched on.Read more