Author:Steenkamp, Lucia H; Brady, DDate:03 Mar 2003This study focused on the identification of suitable lipase or esterase activity for enantiomeric resolution of (R, S)-naproxen. For an economically viable reaction the enantiomeric ratio (E) should preferably be >100, while maximising the ...Read more
Author:Jardine, JL; Stoychev, Stoyan H; Mavumengwana, V; Ubomba-Jaswa, EDate:Jul 2018The search for an eco-friendly, non-toxic, economical and efficient means of cleaning water through bioremediation is not only more favourable but critical to maintaining water quality globally especially in water-scarce countries. Thermophilic ...Read more
Author:Maharaj, R; Maharaj, V; Crouch, NR; Bhagwandin, N; Folb, PI; Pillay, P; Gayaram, RDate:Sep 2012This study was initiated to establish whether any South African ethnomedicinal plants (indigenous or exotic), that have been reported to be used traditionally to repel or kill mosquitoes, exhibit effective mosquito larvicidal properties.Read more
Author:Mahlangu, Vusi J; Pretorius, Cecilia J; Ndibewu, PPTDate:Sep 2016This paper presents qualitative analysis results of diesel particulate matter (DPM) from various mining commodities in South Africa. The objective of this work was to determine the concentrations of elements in DPM samples. For this screening ...Read more
Author:Ndiaye, M; Abu-Mahfouz, Adnan MI; Hancke, GPDate:Jul 2019Software-defined networking (SDN) promises a wide range of application benefits to the Internet of Things (IoT) including the flexible management of wireless sensor networks (WSNs). While the integration of SDN techniques in WSNs is being ...Read more
Author:Dehda, PS; Jayram, S; Abu-Mahfouz, Adnan MI; Ouahada, KDate:Aug 2019Current Personal Flotation Devices (PFD), such as life jackets, are equipped with reflective tape and water- activated LED units. As technology advances, it is imperative that safety equipment is enhanced as well This motivates the use of Low ...Read more
Author:Giddy, IS; Nicholson, Sarah-Anne; Queste, RY; Thomalla, Sandy J; Swart, SDate:Aug 2023The Antarctic Marginal Ice Zone (MIZ) accounts for 15% of the Southern Ocean's primary production (PP), but limited data has hindered understanding of its variability and connection to carbon export. Using a combination of gliders, biogeochemical ...Read more
Author:Singh, SP; Groenewald, JC; Hart-Davis, MG; Backeberg, Bjorn C; Willows-Munro, SDate:Nov 2018This study examines the fine-scale population genetic structure and phylogeography of the spiny lobster Panulirus homarus in the Western Indian Ocean. A seascape genetics approach was used to relate the observed genetic structure based on 21 ...Read more
Author:Swart, S; Thomalla, Sandy J; Monteiro, Pedro MSDate:Jun 2014In the Southern Ocean there is increasing evidence that seasonal to subseasonal temporal scales, meso- and submesoscales play an important role in understanding the sensitivity of ocean primary productivity to climate change. In this study, ...Read more
Author:Gregor, L; Monteiro, Pedro MSDate:Oct 2013In this study we use the southern Benguela upwelling system to investigate the role of nutrient and carbon stoichiometry on carbonate dynamics in eastern boundary upwelling systems. Six months in 2010 were sampled along a cross-shelf transect. ...Read more
Author:Maluleke, P; Landman, WA; Malherbe, Johan; Archer, Emma RMDate:Nov 2018Application of seasonal forecasts in agriculture has significant potential and realized utility. Other sectors that may also benefit from using seasonal forecasts include (but are not limited to) health, hydrology, water, and energy. This ...Read more
Author:Malherbe, Johan; Landman, WA; Olivier, C; Sakuma, H; Luo, J-JDate:Jul 2014Forecasts of a Global Coupled Model for austral summer with a 1 month lead are downscaled to end-of-season maize yields and accumulated streamflow over the Limpopo Province and adjacent districts in northeastern South Africa through application ...Read more
Author:Shirvani, A; Landman, WADate:Jul 2015This paper examines the skill of seasonal precipitation forecasts over Iran using one two-tiered model, three National Multi-Model Ensemble (NMME) models, and two coupled ocean–atmosphere or one-tiered models. These models are, respectively, ...Read more
Author:Muchuru, S; Landman, WA; DeWitt, D; Lötter, DDate:Jul 2014The Lake Kariba catchment area in southern Africa has one of the most variable climates of any major river basin, with an extreme range of conditions across the catchment and through time. Marked seasonal and interannual fluctuations in ...Read more
Author:Landman, WA; Dewitt, D; Lee, D-E; Beraki, Asmerom F; Lotter, DDate:Apr 2012Forecast performance by coupled ocean–atmosphere or one-tiered models predicting seasonal rainfall totals over South Africa is compared with forecasts produced by computationally less demanding two-tiered systems where prescribed sea surface ...Read more
Author:Lazenby, MJ; Landman, WA; Garland, Rebecca M; DeWitt, DGDate:Oct 2014An assessment of probabilistic prediction skill of seasonal temperature extremes over Southern Africa is presented. Verification results are presented for six run-on seasons; September to November, October to December, November to January, ...Read more
Author:Henson, SA; Briggs, N; Carvalho, F; Manno, C; Mignot, A; Thomalla, Sandy JDate:Apr 2023The biological carbon pump (BCP) contributes to the oceanic CO2 sink by transferring particulate organic carbon (POC) into the deep ocean. The magnitude and efficiency of the BCP is likely to vary on timescales of days to seasons, however ...Read morecbnd