Author:Mokhothu, Thabang H; John, Maya JDate:Oct 2017In this study, bio-based coatings were used for reducing water sorption of composites containing flame retardant treated natural fibres and phenolic resin. Two types of coatings; polyfurfuryl alcohol resin (PFA) and polyurethane (PU) were ...Read more
Author:Mokhothu, Thabang H; John, Maya JDate:Mar 2017The use of bio-based fillers as alternative replacement for synthetic fillers has been dictated by increasing ecological concerns as well as depleting petroleum resources. The other aspect is a growing need for eco-friendly, renewable and ...Read more
Author:Naidu, Darrel S; Hlangothi, SP; Mathew, MJDate:Jan 2018Obtaining chemicals and materials in sustainable ways is of growing importance. A potential source of sustainable chemicals and materials is lignocellulosic biomass residues generated as waste from agriculture. Hemicellulose which is a large ...Read more
Author:Maharaj, R; Gayaram, R; Crouch, N; Maharaj, V; Pillay, P; Bhagwandin, N; Folb, PIDate:Feb 2006Malaria is a serious health problem in South Africa affecting the lives of approximately 4 million people. Resistance to the principal vector, Anopheles arabiensis, has initiated a search for new plant-derived insecticides. Plants were selected ...Read more
Author:Olwal, TO; Masonta, Moshe T; Mekuria, FissehaDate:Jun 2014In the recent past, research in the next generation wireless heterogeneous broadband networks has favoured the design of multi-radio interface over the single radio interface architectures in order to support desirable features such as a ...Read more
Author:Lain, Lisl; Kravitz, J; Smith, Marie EDate:Nov 2023The diversity of phytoplankton communities and the robustness of ecosystem stability over annual and interannual time scales is not well characterized in South Africa. Extensive optical & biogeochemical field measurements are being collected ...Read more
Author:Greben, HADate:Feb 2009This presentation looks at the mining history in South Africa, the impact of mining on the environment, especially water pollution. Then the CSIR's project on remediation of mine water is discussedRead more
Author:Anand, K; Kaviyarasu, K; Muniyasamy, Sudhakar; Roopan, SM; Gengan, RM; Chuturgoon, AADate:Jul 2017The sustainable synthesis of nanoparticles provides an eco-friendly and interesting approach in the domain of clean synthesis and nanobiotechnology. The in vitro synthesis of silver nanoparticles from the aqueous extract of an indigenous South ...Read more
Author:Oberholster, Paul J; Myburgh, JG; Ashton, PJ; Coetzee, JJ; Botha, A-MDate:Jan 2012Concentrations of total aluminium (Al) and iron (Fe) were determined in Lake Loskop over a period of four months in 2009 in samples of phytobenthos, phytoplankton, macroinvertebrates, amphibians and fish. The highest concentrations of Al and ...Read more
Author:Gordon, GER; Visser, Daniel F; Bode, ML; Brady, DDate:Nov 2008The potential of chemo-enzymatic methods to produce active pharmaceutical ingredients (APIs) such as stavudine (d4T) and zidovudine (AZT) has been demostrated during this investigation. The effect of increasing reactor productivity to ...Read more
Author:Tlotleng, Monnamme; Akinlabi, E; Shukla, M; Pityana, Sisa L; Mathebula, T; Chauke, LevyDate:Nov 2014A method of synthesising a biocompatible HAP coating is presented. In the current study, Nd:YAG laser was used to directly melt pre-place HAP powder beds on Ti-6Al-4V. The processing parameters used were 750 W laser power, 5 mm/s scanning ...Read more
Author:Nilen, RWN; Richter, PW; Ripamonti, U; Chetty, AS; Moolman, FSDate:Feb 2006Bioceramics are ceramic materials used to replace, repair or augment damaged or missing parts of the body. For example, hydroxyapatite (HA = Ca10(PO4)6(OH)2) and tricalcium phosphate (TCP = Ca3(PO4)2) are bioceramics commonly used in dental ...Read more
Author:Savulescu, AF; Stoychev, Stoyan H; Mamputha, Sipho; Mhlanga, MMDate:Jun 2020RNA binding proteins (RBPs) interact with cellular mRNAs, controlling various steps throughout the lifetime of these transcripts, including transcription, cellular transport, subcellular localization, translation and degradation. In addition ...Read more
Author:Conradie, Dirk CUDate:Jul 2017The purpose of this paper is to research the expected effect of climate change on South African cities, with specific reference to Pretoria. A bioclimatic analysis is used to quantify the most appropriate mitigation techniques for new and ...Read more