Author:Mangisa, M; Tembu, VJ; Fouché, Gerda; Nthambeleni, Rudzani; Peter, Xolani K; Langat, MKDate:May 2018The stem bark extract of Suregada zanzibariensis afforded a previously undescribed ent-abietane diterpenoid trivially named mangiolide (1) and a known jolkinolide B (2) via anticancer bioassay-guided fractionation. The CH(sub)2Cl(sub)2:MeOH ...Read more
Author:McLaren, M; Agnew, M; Leach, J; Roux, FS; Padgett, MJ; Boyd, RW; Forbes, ADate:Oct 2012Orbital angular momentum (OAM) entanglement is investigated in the Bessel-Gaussian (BG) basis. Having a readily adjustable radial scale, BG modes provide an alternative basis for OAM entanglement over Laguerre-Gaussian modes. We show that the ...Read more
Author:Jacobs, D; Kotzé, Paula; Van der Merwe, A; Gerber, ADate:May 2011A key constraint for growing small and medium enterprises (SMEs) is the business skills required to grow the enterprises through the stages of transformation. Criticism against growth stage models for SMEs is of concern, since these models ...Read more
Author:Coetzee, J; Erasmus, Louwrence DDate:Aug 2013In this paper it is proposed that Enterprise architecture in principle develops the Logistic Support model for systems on System Hierarchical Level 6 and higher. The Enterprise architectural model is a blue print, like the DNA for biological ...Read more
Author:De Vries, M; Gerber, A; Van der Merwe, ADate:Jun 2015Enterprise engineering (EE) is emerging as a new discipline to address the design of the enterprise in a holistic way. Although existing knowledge on enterprise design is dispersed and fragmented across different disciplines and approaches, ...Read more
Author:Mosomane, L; Mapako, MDate:Apr 2009Small enterprises are important in the growth of economies and they stimulate the economy through employment, skill transfer and by addressing market segments neglected by big businesses, for example provision of services like telecommunications ...Read more
Author:Grobler, J; Engelbrecht, AP; Kendall, G; Yadavalli, VSSDate:Dec 2014This paper extends the investigation into the algorithm selection problem in hyper-heuristics, otherwise referred to as the entity-to-algorithm allocation problem, introduced by Grobler et al.. Two newly developed population-based portfolio ...Read more
Author:Rabie, CJ; Lubben, A; Marais, GJ; Jansen van Vuuren, HDate:01 Apr 1997Estimation of fungal contamination of barley grain is important as certain fungi can proliferate during the malting process. The following factors which may affect the enumeration of fungi were evaluated: dilution versus direct plating, ...Read more
Author:Van der Merwe, H; Thachuk, O; Nel, S; Van der Merwe, B; Visser, WDate:Nov 2015Software applications are developed to be executed in a specific environment. This environment includes external/ native libraries to add functionality to the application and drivers to fire the application execution. For testing and verification, ...Read more
Author:Nahman, Anton; Wise, R; De Lange, Willem JDate:Sep 2009The paper reviews the potential contributions of environmental and resource economics (ERE) to the achievement of sustainable development in developing countries and highlights the limitations associated with applying ERE within a developing ...Read more
Author:Scott, DFDate:2000Certification has been responsible for a very large improvement in the standard of forest management in South Africa. The reasons for the positive role of certification are set out briefly below. Firstly, and most importantly, certification ...Read more
Author:Naudé, Brian; Petzer, Charl ADate:Jul 2017Environmental Asset Management (EAM) includes Environmental Asset Protection (EAP). Rare, important, and valuable natural assets need protection from vandalism and criminal syndicates determined to exploit these assets, for commercial gain ...Read more
Author:Van Reenen, Coralie A; Nkosi, MuziDate:Oct 2020Vehicle emissions contribute significantly to the greenhouse gas (GHG) content in the earth’s atmosphere, with transportation emissions constituting 24% of the global carbon dioxide (CO2) emissions (IEA, 2020), contributing to climate change. ...Read more
Author:Erasmus, BFN; Coetzer, K; Mambo, J; Archer, Emma RM; Fisher, JT; Asner, GPDate:May 2011Bushbuck Ridge is a typical cultural landscape where the interdependency of people and the environment shape the savanna ecosystem goods and services upon which many people are dependent. The forced resettlement of people in the apartheid ...Read more
Author:John, Maya JDate:Jun 2017The emergence of biocomposites as an alternative to petroleum-based composites has largely been to superior technical properties along with problems associated with depleting petroleum resources and increasing environmental legislations. The ...Read more
Author:Cunnama, D; Andrianomena, S; Cress, CM; Faltenbacher, A; Gibson, BK; Theuns, TDate:Jan 2014We use the Galaxies-Intergalactic Medium Interaction Calculation (GIMIC) cosmological hydrodynamic simulation at z = 0 to study the distribution and environmental dependence of neutral hydrogen (Hi) gas in the outskirts of simulated galaxies. ...Read more
Author:Ekwanzala, MD; Lehutso, Raisibe F; Kasonga, TK; Dewar, JB; Momba, MNBDate:Jul 2020The environmental dissemination of selected antibiotics from hospital wastewater into municipal wastewater and lastly to a receiving water body was investigated. Selected antibiotics (azithromycin (AZM), ciprofloxacin (CIP), clindamycin (CDM), ...Read more
Author:Aghion, E; Govender, G; Comins, NDate:15 Apr 1995High-temperature low-cycle fatigue (HTLCF) failure mechanisms of aluminide-coated MAR-M002 nickel-base superalloy in air, argon and Ar+5% SO2 atmospheres were investigated at 870°C. The loading conditions were constant and consisted of creep ...Read more
Author:John, Juanette; Ijsselmuiden, C; Oosthuizen, R; Voyi, K; Webb, EDate:Sep 2005This study aimed to characterize the exposure of 5-year old children attending preschool facilities in Pretoria to lead (as an example of an environmental pollutant) in air and surface soil, specifically in relation to their activity patterns.Read more