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
Author:Manoto, Sello L; Malabi, Rudzani; Ombinda-Lemboumba, Saturnin; Mthunzi-Kufa, PatienceDate:Mar 2019Over the past few years gold nanoparticle (AuNPs) have become extremely interesting because they possess enhanced optical, electrical and chemical properties. AuNPs have the ability to form robust conjugates with biomolecules such as antibodies ...Read more
Author:Muniyasamy, Sudhakar; John, Maya JDate:Mar 2017The development of biobased polymer materials from renewable resources meets the concept of sustainability, offering the potential of renewability, biodegradation, and a path away from the problems associated with plastic derived from ...Read more
Author:Muniyasamy, Sudhakar; Patnaik, AsisDate:Jan 2021Present study deals with the biodegradable behavior of individual components and their preforms of nonwoven biocomposites developed from waste wool fibers including coring wool (CW), dorper wool (DW) and recycled polyester fibers (RPET). A ...Read more
Author:Vargha, V; Truter, PDate:Apr 2005Wheat starch was reacted with poly (vinyl acetate) and with poly (vinyl acetate-co-butyl acrylate) in an internal mixer at 150 _C in the absence of catalyst, and in the presence of sodium carbonate, zinc-acetate and titanium (IV) but oxide. ...Read more
Author:Mkhabela, V; Ray, SSDate:Aug 2015A new type of hybrid three-dimensional scaffolds was prepared using poly(caprolactone) (PCL) and chitosan-modified montmorillonite by solvent casting and particulate leaching method. The scaffolds were characterized by scanning electron ...Read more
Author:Kumar, R; Yakubu, MK; Anandjiwala, RDDate:Jul 2010Woven and nonwoven flax fiber reinforced poly lactic acid (PLA) biocomposites were prepared with amphiphilic additives as accelerator for biodegradation. The prepared composites were buried in farmland soil for biodegradability studies. Loss ...Read more
Author:Grobler, J; Harding, KG; Smit, Monique; Ramchuran, Santosh O; Durand, P; Low, MDate:Sep 2021In this study, a South African indigenous microalga Acutodesmus bajacalifornicus was evaluated in different cultivation media. Eleven potential cultivation media were identified and tested on A. bajacalifornicus, a potential source for biodiesel ...Read more
Author:Scholes, RJ; Kuper, W; Biggs, RDate:2006Biodiversity offers multiple opportunities for development and improving human well-being. It is the basis for essential environmental services upon which life on Earth depends. Thus, its conservation and sustainable use are of critical ...Read more
Author:Scholes, RJ; Biggs, RDate:03 Mar 2005The nations of the world have set themselves a target of reducing the rate of biodiversity loss by 2010. Here, we propose a biodiversity intactness index (BII) for assessing progress towards this target that is simple and practical - but ...Read more