Author:Akpakwu, GA; Hancke, GP; Abu-Mahfouz, Adnan MIDate:Feb 2020With the emerging applications of the Internet of Things (IoT), a congestion control mechanism becomes a critical phenomenon for efficient communication in networks of constrained devices. The Internet Engineering Task Force developed the ...Read more
Author:Fatoki, OS; Awofolu, OR; Genthe, BettinaDate:Oct 2004Trace levels of Cd were determined in Umata River which may affect human health. The levels of Zn were also determined since Zn can provide partial protection against the toxic effect of Cd in humans. The levels of Cd varied between trace and ...Read more
Author:Ngulube, T; Gumbo, JR; Masindi, Vhahangwele; Maity, ArjunDate:Oct 2018The ability of calcined magnesite for Methylene Blue (MB), Direct Red 81 (DR81), Methyl Orange (MO) and Crystal Violet (CV) dye removal was evaluated in this study. The experiments were designed to test the hypothesis that alkaline earth ...Read more
Author:Maritz, J; Krieg, HM; Yeates, CA; Botes, AL; Breytenbach, JCDate:Oct 2003Resting cells of the yeast Rhodosporidium toruloides (UOFS Y-0471) were immobilized in calcium alginate beads for the enantio selective kinetic resolution of racemic-1,2-epoxyoctane. The initial activity exhibited by immobilised cells was ...Read more
Author:Lysko, Albert ADate:Jul 2008An efficient method of integration for far field calculations is derived. The method applies to the integrals arising from calculation of far field pattern with higher-order polynomial basis functions and moment method. The integral under ...Read more
Author:Kok, S; Botha, N; Inglis, MDate:Aug 2014Goldmann applanation tonometry (GAT) is a method used to estimate the intraocular pressure by measuring the indentation resistance of the cornea. A popular approach to investigate the sensitivity of GAT results to material and geometry ...Read more
Author:Roberts, David PDate:Jul 2017Bore-and-fill mining was implemented at a pilot site in Tau Tona mine’s shaft pillar on 97 level. Observations, scan data and measurements from this site were used to calibrate an inelastic numerical model of bore-and-fill mining within the ...Read more
Author:Griffith, Derek J; Bone, Emma L; Thomalla, Sandy J; Bernard, StewartDate:Jul 2018A multi-excitation fluorometer (MFL, JFE Advantech Co., Ltd.), originally designed to discriminate between phytoplankton species present within a population, has been redirected for use in fluorescence quantum yield (FQY) determination. While ...Read more
Author:Eddy, C; de Saxe, Christopher C; Cebon, DDate:Aug 2018Heavy Goods Vehicles (HGVs) are overrepresented in cyclist fatality statistics in the UK relative to their proportion of total traffic volume. In particular, the statistics highlight a problem for vehicles turning left across the path of a ...Read more
Author:Wessels, Konrad J; Prince, SD; Malherbe, Johan; Small, J; Frost, PE; Van Zyl, DDate:Jan 2007Advanced Very High Resolution Radiometer (AVHRR), Normalized Difference Vegetation Index data (NDVI, I km (2), 1985-2003) and modelled net primary production (NPP, 8 km (2), 1981-2000) data were used to estimate vegetation production in South ...Read more
Author:Scholes, RJ; Bailey, CLDate:Feb 1996This article discusses the South African Greenhouse Experiment on Savannas (SAGES) study conducted by the CSIR' Division of Forest Science and Technology (Foretek) on the role of savannas in the balance of the greenhouse gas budget of South ...Read more
Author:Gong, X; Srivastava, V; Naicker, Previn; Khan, A; Ahmad, ADate:Mar 2023Candida parapsilosis poses huge treatment challenges in the clinical settings of South Africa, and often causes infections among immunocompromised patients and underweight neonates. Cell wall proteins have been known to play vital roles in ...Read more
Author:Gong, X; Srivastava, V; Naicker, Previn; Khan, A; Ahmad, ADate:Mar 2023Candida parapsilosis poses huge treatment challenges in the clinical settings of South Africa, and often causes infections among immunocompromised patients and underweight neonates. Cell wall proteins have been known to play vital roles in ...Read more
Author:Scholes, RJ; Frost, PGH; Tian, YDate:Mar 2004Measurements of tree canopy architecture were made at six savanna sites on deep, sandy soils, along a gradient of increasing aridity. There was substantial variation in the leaf area estimated within each site, using the same sample frame, ...Read more
Author:Siebritz, LA; Desai, A; Coetzee, S; Cooper, Antony KDate:Nov 2021The Digital Earth vision foresees the availability and accessibility of geospatial information to achieve the goals of sustainable development, economic growth and social well-being. In the case of urban areas, upto-date geospatial information ...Read more
Author:Rossouw, Claire A; Raju, Kumar; Zheng, Haitao; Ozoemena, KIDate:Dec 2017Manganese-doped lithium iron phosphate (LFMP), coated with reduced graphene oxide (RGO), has been prepared by a microwave-assisted solvothermal technique. The un-doped lithium iron phosphate material with RGO (i.e., LFP/RGO) gave a rod-like ...Read more
Author:Hussien, HM; Katzis, K; Mfupe, Luzango P; Bekele, ETDate:Jun 2022The coverage and capacity of exploiting TV White Spaces (TVWS) from High Altitude Platforms (HAPs) with multiple antenna payloads using uniform rectangular phased array (URA) antennas are explored in this article. A scenario is suggested in ...Read more
Author:Brunke, EG; Labuschagne, C; Parker, B; Van der Spuy, D; Whittlestone, SDate:May 2002Specific factors of a baseline Rn-222 detector installed at Cape Point, South Africa, were studied with the aim of improving its performance. Direct sunlight caused air turbulence within the instrument, resulting in 13.6% variability of the ...Read more
Author:Machaka, Ronald; Ndlangamandla, P; Seerane, Mandy NDate:Feb 2018This paper reports on an attempt to establish the rheological properties of 17-4 PH stainless steel MIM feedstocks prepared using a proprietary CSIR wax-based binder system. The influence of powder and feedstock characteristics on the rheological ...Read more
Author:Kamper, H; De Wet, Febe; Hain, T; Niesler, TDate:Nov 2014South African English is currently considered an under-resourced variety of English. Extensive speech resources are, however, available for North American (US) English. In this paper we consider the use of these US resources in the development ...Read more