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: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
Author:Van Wyk, I; Roychoudhury, AN; Maherry, A; Genthe, BettinaDate:2012Kamiesberg, located in the semi-arid regions of South Africa, depends primarily on subsurface water resources for domestic, agricultural and industrial use. In order to assess geochemical evolution of groundwater and to identify salinization, ...Read more
Author:Hobbs, Philip J; De Meillon, NDate:Sep 2017A water level rise of almost 3 m in the space of two years in the Sterkfontein Cave system since late-2009 necessitated the re-routing of the tourist path through the cave to successively higher elevations on three occasions. It also raisedconcern ...Read more
Author:Xu, Y; Titus, R; Holness, SD; Zhang, J; Van Tonder, GJDate:Oct 2002In South Africa, the flow requirements for maintaining the normal functioning of aquatic ecosystems is termed the “ecological reserve” and these should be determined when a licence application for water allocation is processed. Determination ...Read more
Author:Scott, DFDate:Oct 1993Stream flow and its storm-flow elements in four catchments were analyzed by the paired catchment method for a response to fire. Prior to burning two of the catchments were vegetated with over-mature fynbos (the indigenous scrub vegetation of ...Read more
Author:Rebelo, AJ; Le Maitre, David C; Esler, KJ; Cowling, RMDate:Nov 2015Valley-bottom wetlands are valuable assets as they provide many ecosystem services to mankind. Despite their value, valley-bottom wetlands are often exploited and land-use/land-cover (LULC) change results in trade-offs in ecosystem services. ...Read more
Author:Lotter, J; Botes, AL; Dyk, MS; Breytenbach, JCDate:Aug 2004Kinetic resolution of the enantiomers of trans-1-phenylpropene oxide and (2,3-epoxypropyl)benzene was achieved by yeasts from the genus Rhodotorula. The resolution of trans-1-phenylpropene oxide by Rhodotorula glutinis UOFS Y-0123 yielded ...Read more
Author:Makgwane, Peter R; Ray, SSDate:Mar 2015A highly active and magnetically recyclable nanostructured copper–iron oxide (CuFe) catalyst has been synthesized for hydroxylation of benzene to phenol under mild reaction conditions. The obtained catalytic results were correlated with the ...Read more
Author:Cho, Moses A; Skidmore, AKDate:Jan 2009The research objective was to determine robust hyperspectral predictors for monitoring grass/herbs biomass production on a yearly basis in the Majella National Park, italy. Hymap images were over the study area on 15 July 2004 and 4 July 2005. ...Read more
Author:Newete, SW; Erasmus, BFN; Weiersbye, IM; Cho, Moses A; Byrne, MJDate:2014Spectral signatures of water hyacinth grown with biocontrol agents (Neochetina eichornia and N. bruchi) and various heavy metal pollutants were collected at the plant canopy level using a hand-held spectrometer to detect biocontrol agent and ...Read more