Author:Schoeman, JJ; Steyn, ADate:30 May 2003The nitrate-nitrogen concentration (>6 mgA) and the salinity (>1000 mg/l TDS) of many borehole waters in rural areas in South Africa are too high for human consumption. Therefore, an urgent need for water denitrification and water desalination ...Read more
Author:Van Duuren, BLDate:1951A graphical statistical method of representation of reaction mechanisms and products, developed by Van Krevelen has been used in the interpretation of the reactions of the nitrochumic acids from coal oxidation.Read more
Author:Frederick, J; Brady, D; Weber, B; Sewell, TDate:Jul 2008A versatile nitrile-degrading bacterium, Rhodococcus rhodochrous ATCCBAA-870, was isolated through enrichment culturing of soil samples from Johannesburg, South Africa. The researchers have previously shown that Rhodococcus rhodochrous ...Read more
Author:Adekunle, AS; Mamba, BB; Agboola, BO; Ozoemena, KIDate:Sep 2011Nitrite, NO2- (in neutral), and NO (in acidic media) were used as analytical probe to investigate the electrocatalytic properties of Prussian blue nanoparticles (PB) modified edge plane pyrolytic graphite (EPPG) electrode. Results indicate ...Read more
Author:Mabena, LF; Ray, SS; Mhlanga, SD; Coville, NJDate:May 2011The science and technology of catalysis is of fundamental importance to a national economy. Today about 90% of all technical chemicals are manufactured by the use of catalysts. Nanoparticles of noble metals are extremely important materials ...Read more
Author:Lessing, MM; Weissenberger, LDate:Jul 2008Biometric advances apply to a range of disciplines to ensure the safety and security of individuals and groups. To stress the value of biometrics, this study focuses on the application of biometric techniques to a vast range of individuals ...Read more
Author:Heavens, A; Fantaye, Y; Sellentin, E; Eggers, H; Hosenie, Z; Kroon, Steve; Mootoovaloo, ADate:Sep 2017We compute the Bayesian Evidence for models considered in the main analysis of Planck cosmic microwave background data. By utilising carefully-defined nearest-neighbour distances in parameter space, we reuse the Monte Carlo Markov Chains ...Read more
Author:Ntshotsho, Phumza; Reyers, B; Esler, KJDate:Mar 2012Evidence-based practice is not possible without an evidence base. Guldemond et al. confuse our attempt at assessing the status of the evidence base of restoration programs in South Africa with attempting to assess whether restoration is ...Read more
Author:Mondal, S; Das, A; Bandyopadhyay, J; Ray, Suprakas S; Heinrich, G; Bandyopadhyay, ADate:Jun 2016This paper introduces a poly(ethylene-co-octene)-poly(ethylene-co-vinyl acetate) double network hybrid as a noble additive cum compatibilizer for poly(ethylene-co-octene) (POE). The addition of only 0.5 mass% of the hybrid into POE has raised ...Read more
Author:Vermaas, RL; Edwards, AL; Soer, MDate:Sep 2007The objective of the study was to investigate the relationship between the audiogram configuration and its calculated Percentage Loss of Hearing (PLH), and the experience of hearing handicap in noise-exposed gold miners. The experience of ...Read more
Author:Edwards, A; Kritzinger, DDate:2011At the 2003 Mine Health and Safety Summit, the milestones for elimination of Noise-induced Hearing Loss (NIHL) in the mining industry were agreed on. The first milestone, December 2008, has passed and the next one in 2013 is looming. The study ...Read more
Author:Edwards, AL; Kritzinger, DDate:Oct 2012At the 2003 Mine Health and Safety Summit, the milestones for elimination of Noise-induced Hearing Loss (NIHL) in the mining industry were agreed on. The first milestone, December 2008, has passed and the next one in 2013 is looming. The study ...Read more
Author:Edwards, ADate:Aug 2010This presentation deals with the excessive noise exposure that miners in South African mines are exposed to. This exposure limits communication and compromises safety, increases risk of hearing loss, has implications for worker’s health, ...Read more
Author:Sivakumar, VDate:Jul 2006The objective of the proposal ( NOMAD ) were: Middle atmospheric temperature structure and dynamics using Lidars over the Indian Ocean Region ( Reunion-21°S, Durban-30°S, Gadanki-13°N, in addition to NDSC sites: OHP-46°N, Lauder-45°S, ...Read more
Author:Shatalov, MY; Every, AG; Yenwong-Fai, ASDate:Apr 2007Coupled electro-mechanical non-axisymmetric vibrations are considered in a transversely isotropic piezoelectric cylinder with axial polarization. Solutions of the system of equations are found by exact integration using a seven functional ...Read more
Author:Bergh, JJ; Cronje, IJ; Dekker, J; Dekker, TG; Gerritsma, LM; Mienie, LJDate:Jan 1997The composition and toxicity of the aqueous oxidation fraction of coal were investigated, to gain information concerning process safety measures and the utilization of the oxidation products as antibacterial agents. Coal was oxidized with ...Read more
Author:Vlok, JD; Olivier, JCDate:Nov 2012A semi-blind method based on principal component analysis (PCA) and sequence synchronisation is proposed to detect direct sequence spread-spectrum (DSSS) signals in a noncooperative setting under low signal-to-noise ratio (SNR) conditions. ...Read more