Author:De Lange, Willem J; Veldtman, R; Allsopp, MHDate:Aug 2013We assess the monetary value of forage provisioning services for honeybees as provided by an alien tree species in the Western Cape province of South Africa. Although Eucalyptus cladocalyx is not an officially declared invader, it is cleared ...Read more
Author:Naidoo, T; Zulu, N; Maharajh, Dheepak M; Lalloo, RajeshDate:Sep 2013Microalgae represent a bio-diverse resource (Metting, 1996; Pulz and Gross, 2004). The complexity of their chemical composition and range of biochemical products make these organisms exploitable resources for valuable and novel products in ...Read more
Author:Coetzee, S; Cooper, Antony KDate:Aug 2007The paper presents examples that illustrate the benefits of addresses in South Africa, such as: Connecting households to utilities such as water, sewage, telecommunications and electricity; Routing emergency services, and providing assistance ...Read more
Author:Herselman, Martha E; Botha, AdèleDate:Jun 2017The purpose of this paper is to indicate what value was co-created with various stakeholders when Design Science Research as a methodology was applied, to develop a Digital Health Innovation Ecosystem (DHIE) for South Africa. Design science ...Read more
Author:Pascual, U; Balvanera, P; Díaz, S; Pataki, G; O’Farrell, PatrickDate:Jun 2017Nature is perceived and valued in starkly different and often conflicting ways. This paper presents the rationale for the inclusive valuation of nature’s contributions to people (NCP) in decision making, as well as broad methodological steps ...Read more
Author:Page, D; Dillon, P; Toze, S; Bixio, D; Genthe, Bettina; Cisneros, BEJ; Wintgens, TDate:Mar 2010A quantitative microbial risk assessment C(QMRA) was performed at four managed aquifer recharge (MAR) sites (Australia, South Africa, Belgium, Mexico) where reclaimed wastewater and stormwater is recycled via aquifers for drinking water ...Read more
Author:Gummow, B; Bastianello, SS; Botha, CJ; Smith, HJC; Basson, AJ; Wells, BDate:Dec 1994An epidemiological investigation into an ''ill thrift'' problem occurring on a dairy farm adjacent to an alloy-processing unit, established that the probable cause of the problem was chronic vanadium poisoning. The disease manifested initially ...Read more
Author:Vuorinen, E; Focke, W; Rigo, TDate:Feb 2006A vapour-phase corrosion inhibitor (VCI) needs to be a volatile compound or a mixture of compounds. It reaches the surfaces that need to be protected from corrosion via the vapour phase and forms a relatively stable bond at the interface of ...Read more
Author:Van der Walt, Christiaan M; Barnard, EDate:Feb 2017Estimating the joint probability density function of a dataset is a central task in many machine learning applications. In this work we address the fundamental problem of kernel bandwidth estimation for variable kernel density estimation in ...Read more
Author:Symes, CT; Woodborne, SMDate:Nov 2011The authors measured d13C and d15N isotope signatures in flight feathers of a White-bellied Sunbird to assess the value of using stable isotopes of feathers in avian dietary studies. Significant variation in d13C and d15N isotope values of ...Read more
Author:Makita, C; Madala, NE; Cukrowska, A; Abdelgadir, H; Chimuka, L; Steenkamp, Paul A; Ndhlala, ARDate:Sep 2017Recent evidence has shown that consumption of plants rich in phenolic compounds has health-promoting benefits. Amongst these plants, include Moringa oleifera Lam. (Moringaceae) which has gained significant attention due to its high contingency ...Read more
Author:Kemp, J; Lotter, Johanna M; Meyer, A; Kleinert, A; Pérez-Fernández, M; Valentine, ADate:May 2018We investigated the different functional strategies of N nutrition of cultivated and wild varieties of the legume Aspalathus linearis (N.L.Burm.) R.Dahlgren during wet and dry seasons in the Cape Floristic Region. The study addressed differences ...Read more
Author:Olbrich, BW; Le Roux, D; Poulter, AG; Bond, WJ; Stock, WDDate:01 Oct 1993This study aimed to determine whether the delta-C-13 levels in the foliage and twigs of four Eucalyptus grandis clones were related to their water use efficiency (WUE). This relationship has previously been demonstrated in a number of herbaceous ...Read more
Author:Shatalov, MDate:Jul 2011Many of wave propagation problems describing by hyperbolic equations could be formulated in terms of the variational principles. In the paper we demonstrate how to derive the systems of ordinary differential equations of the method of lines ...Read more
Author:Nape, I; Mashaba, Nikiwe P; Mphuthi, N; Jayakumar, S; Bhattacharya, S; Forbes, AndrewDate:Mar 2021Vector beams are inhomogeneously polarized optical fields with nonseparable, quantum-like correlations between their polarization and spatial components, and hold tremendous promise for classical and quantum communication across various ...Read more
Author:Erasmus, CDate:2009The current status of cereal and vegetable protein and its potential use in aquaculture feeds to replace fish meal is described in order to provide an insight into the challenges facing its use. The key drivers for exploiting food waste ...Read more
Author:Scott, L; Woodborne, SDate:2007Pollen analysis shed light on vegetation community structure over the last 23,000 year in the Western Cape. The pollen from dated hyrax faecal accumulations (hyraceum) relates to the evolution of climate and contributes to proxy records in ...Read more
Author:Lück-Vogel, Melanie; Rautenbach, K; Adams, J; Van Niekerk, Lara; Mbolambi, CikizwaDate:May 2016This paper examines the value of very high-resolution multispectral satellite imagery and LiDAR-derived digital elevation information for classifying estuarine vegetation types. Satellite images used are from the WorldView-2, RapidEye, and ...Read more
Author:Manamela, Selolo S; Cilliers, Jacques E; Gaffar, YADate:Dec 2023In this paper, the problem of modelling radio wave propagation through vegetation using parabolic equation methods is investigated by modifying the parabolic equation toolbox (PETOOL) to incorporate a mechanism to model vegetation. The ...Read more
Author:Lesoli, MS; Dube, S; Monde, NDate:Jul 2010Rangeland degradation results in declining functional capacity, increased poverty, and food insecurity. Major changes in rangeland surface morphology and soil characteristics have a drastic effect on the primary productivity of the rangeland ...Read more