Author:Nyigo, VA; Peter, Xolani K; Mabiki, F; Malebo, HM; Mdegela, RH; Fouché, GerdaDate:Jun 2016Purification of dichloromethane extract from root barks and leaves of Synadenium glaucescens respectively resulted into the isolation of two compounds namely Euphol and ß-sitosterol. Chemical structures were established mainly by using (sup1)H ...Read more
Author:Edward, VA; Egounlety, M; Huch, M; Van Zyl, PJ; Singh, S; Nesengani, ND; Haakuria, VM; Franz, CMAPDate:Aug 2012Cassava (Manihot esculenta Crantz), is used for the production of a variety of West African foods and ranks fourth in the list of major crops in developing countries after rice, wheat and maize. Gari is one of the most popular foods produced ...Read more
Author:Lalloo, Rajesh; Ramchuran, Santosh O; Ramduth, DM; Gorgens, JDate:Feb 2007Natural isolates obtained from mud sediment and Cyprinus carpio were purified and assessed in vitro for efficacy based on the inhibi-tion of growth of pathogenic Aeromonas hydrophila and the decrease in concentrations of ammonium, nitrite, ...Read more
Author:Adewusi, EA; Steenkamp, P; Fouché, Gerda; Steenkamp, VDate:Jun 2013Boophone disticha (Amaryllidaceae) is widely used in traditional medicine in southern Africa. Several alkaloids, volatile oils and fatty acids have been isolated from the plant. However, there has been no literature report of a triterpene ...Read more
Author:Simpson, C; Jordaan, J; Whiteley, C; Gardiner, NSDate:Feb 2007A novel glucose oxidase (GOX), a Xavoenzyme, from Penicillium sp. was isolated, purified and partially characterised. Maximum activities of 1.08Umg‾1dry weight intracellular and 6.9Uml‾1 extracellular GOX were obtained. Isoelectric focussing ...Read more
Author:Adeleke, Oluwatoyin A; Tsai, P; Karry, KM; Monama, Nkwe O; Michniak-Kohn, BBDate:Aug 2021Drug treatment remains the most effective global approach to managing and preventing tuberculosis. This work focuses on formulating and evaluating an optimized polyvinyl alcohol-polyethylene glycol based orodispersible strip containing ...Read more
Author:Nyadongo, ST; Pityana, Sisa L; Olakanmi, EODate:Jul 2021It is anticipated that laser cladding assisted with preheat (LCAP)-deposited Tribaloy (T-800) composite coatings enhances resistance to structural degradation upon exposure to elevated-temperature oxidation service environments. The oxidation ...Read more
Author:Smart, SM; Fawcett, SE; Thomalla, Sandy J; Weigand, MA; Reason, CJC; Sigman, DMDate:Apr 2015We report wintertime nitrogen and oxygen isotope ratios (δ15N and δ18O) of seawater nitrate in the Southern Ocean south of Africa. Depth profile and underway surface samples collected in July 2012 extend from the subtropics to just beyond the ...Read more
Author:Harmer, RE; Farrow, DDate:Apr 1995Many geochronological studies on silicic magmatic rocks associated with the Bushveld Complex (rhyolitic lavas of the Rooiberg Group and granites of the Lebowa Granite Suite) have shown evidence of open-system behaviour of the Rb-Sr and Pb-Pb ...Read more
Author:Oosthuizen, R; Matooane, M; Wright, C; Phala, NDate:Aug 2012The West Rand is part of the Gauteng Province and is surrounded by mining activities. There have been several media and scientific reports about acid mine drainage (AMD) in this area. However, AMD is not the only environmental problem faced ...Read more
Author:Van Deventer, Heidi; Apleni, PhilaniDate:Jun 2021This poster is related to the WRC 427 project and consists of two A0 posters. The first page shows the knowledge of wetlands we currently have, recognising that there are different wetland types. We are concerned about the degradation and ...Read more
Author:Owen, GR; Stoychev, Stoyan H; Achilonu, I; Dirr, HWDate:Mar 2013JNK1 is activated by phosphorylation of the canonical T183 and Y185 residues, modifications that are catalysed typically by the upstream eukaryotic kinases MKK4 and MKK7. Nonetheless, the exact sites at which the most abundant JNK variant, ...Read more
Author:De Freitas, A; De Villiers, Johan P; Nel, Willem AJDate:Jun 2015A target of interest measured by a high range resolution radar may be modelled by multiple dominant points of reflections referred to as dominant scatterers. In this study a non-linear state space setting is used to model the states and ...Read more
Author:Slingsby, JA; De Buys, A; Simmers, ADA; Prinsloo, E; Forsyth, Gregory G; Glenday, J; Allsopp, NDate:Apr 2021The Jonkershoek Forestry Research Station was established in the Mediterranean climate region of South Africa in 1935 to implement a multiple catchment experiment to determine the effects of afforestation on water yield. The experiment consists ...Read more
Author:Burger, L; Forbes, ADate:Aug 2008The authors apply a new method of modeling Porro prism resonators, using the concept of rotating loss screens, to study stable and unstable Porro prism resonator. They show that the previously observed petal–like modal output is in fact only ...Read more
Author:Mokhothu, Thabang H; Guduri, BR; Luyt, ASDate:Dec 2011In this study the morphology and properties of a biodegradable aliphatic–aromatic copolyester mixed with kenaf fiber were investigated. Untreated kenaf fiber, as well as kenaf fiber treated with NaOH, and with NaOH followed by silane coupling ...Read more
Author:John, Maya J; Bellmann, C; Anandjiwala, RDDate:Oct 2010This paper presents an experimental study on the use of zein as a coupling agent in natural fibre composites. Kenaf nonwovens were treated with zein coupling agent, which is a protein extracted from corn. The surface characteristics of untreated ...Read more
Author:Butgereit, L; Botha, RA; Van den Heever, MDate:Jul 2012Different human languages look different from other human languages. To use a term from the computer industry, each human language has its own “look and feel”. European English speakers can easily recognise a phrase such as “Comment allez-vous?” ...Read more