Author:Njobeh, PB; Dutton, MF; Chuturgoon, AA; Koch, SH; Steenkamp, PA; Stoev, SDDate:Jun 2009A novel metabolite of P. polonicum was recently isolated from Cameroonian Zea mays by means of preparative silica gel thin layer chromatographic method. The potential cytotoxic effects of this novel compound was further tested, in vitro, ...Read more
Author:Barros, E; Verryn, S; Hettasch, MDate:Jul 2002Wood splitting is a defect in eucalyptus which results in considerable losses when converting logs to solid wood products. Commonly in forestry, molecular markers are identified through studying pedigrees from a single cross. This limits the ...Read more
Author:Kijko, A; Lasocki, S; Retief, SJPDate:1999A technique to interpret a cluster of seismic events in terms of causative structures is described. The process consists of moving the located hypocenters of events within their confidence ellipsoids until a simplified pattern of the seismic ...Read more
Author:Oberholster, Paul J; Myburgh, JG; Govender, D; Bengis, R; Botha, A-MDate:2009The eutrophic process potentially caused by a high urine and faecal load resulting from an unusually high hippopotamus (Hippopotamus amphibious) density in the Nhlanganzwane Dam, Kruger National Park, South Africa, triggered a chain of events ...Read more
Author:Viren Chunilall, Viren; Sithole, Bishop B; Ramjugernath, D; Tamrat, TDate:Mar 2019Chicken feathers were separated into barb and rachis fractions and subject to analytical pyrolysis at 550°C in order to identify the protein degradation products and potential toxic compounds that could arise. Under these conditions, cyanide ...Read more
Author:Gaigher, JLDate:1976Zircon, ilmenite and rutile have been identified by X-ray diffraction in a pyrite concentrate prepared from a Witbank coal by means of the Deister Table.Read more
Author:Goliger, Adam M; Retief, RVDate:Nov 2002This paper summarises the initial stage of development of a wind damage/disaster risk model for South Africa. The aim is to identify the generic zones of various types of strong wind events. The extent of these zones will form the basis for ...Read more
Author:Ottermann, RWDate:Dec 2000The occurrence and cause of overwind and underwind events in underground mining were investigated in conjunction with devices, which are at present being applied to prevent and control such incidents. Proposals for in-shaft systems to protect ...Read more
Author:Johnson, RA; Hagan, TO; Squelch, AP; Jaku, EDate:Mar 2000Assessments of accident records indicate the need for improved understanding and
competence among underground production and service personnel with regard to
strata control, and the associated risks, in gold and platinum mines. The ...Read more
Author:Phillips, HRDate:Jan 1999This report describes outcome of a literature review of the extensive research conducted worldwide into the phenomenon of frictional ignition, a review of whether machines currently used in South Africa comply with known principles for reducing ...Read more
Author:Iyawa, G; Botha, Adèle; Herselman, Martha EDate:Dec 2016This chapter provides an overview of the specific terms to be considered when referring to a DHIE, as well as the rise of preventive measures to ensure a focus on wellness. Elements that constitute a DHIE will be discussed based on a literature ...Read more
Author:Hernandez-Leal, P; Taylor, ME; Rosman, Benjamin S; Sucar, LE; Munoz de Cote, EDate:Feb 2016In many situations, agents are required to use a set of strategies (behaviors) and switch among them during the course of an interaction. This work focuses on the problem of recognizing the strategy used by an agent within a small number of ...Read more
Author:Shackleton, RT; Le Maitre, David C; Van Wilgen, BW; Richardson, DMDate:May 2016Biological invasions are a major driver of ecological and social change globally. The negative effects of these invasions have led to the initiation of programs to manage these invasions across the world. Management aims to reduce impacts and ...Read more
Author:Ntshotsho, Phumza; Esler, KJ; Reyers, BDate:Nov 2015Global acknowledgement of ecological restoration, as an important tool to complement conservation efforts, requires an effort to increase the effectiveness of restoration interventions. Evidence-based practice is purported to promote ...Read more
Author:Willemen, L; Crossman, ND; Quatrini, S; Egoh, Benis N; Kalaba, FKDate:Jun 2017Land degradation response actions need motivated stakeholders and investments to improve land management. In this study we present methods to prioritise locations for degradation mitigation investments based on stakeholder preferences for ...Read more
Author:Iyawa, GE; Herselman, Martha E; Botha, AdèleDate:2017The concept of digital health innovation ecosystems is an emerging body of literature which suggests that components of digital health, innovation and digital ecosystems are important in the administration and delivery of healthcare services. ...Read more
Author:Archibald, S; Roy, DPDate:Jul 2009An algorithm for identifying individual fires from the Modis burned area data product is introduced for southern Africa. This algorithm gives the date of burning, size of fire, and location of the centroid for all fires identified over 8 years ...Read more
Author:Nel, JL; Driver, A; Strydom, W; Maherry, A; Petersen, C; Hill, Liesl; Roux, DJDate:Oct 2012This presentation highlights the use of systematic conservation planning to identify priority areas for managing the health of freshwater ecosystems and their associated biodiversity and ecosystem services.Read more
Author:Fairbanks, DHK; Benn, GADate:30 Aug 2000The application of landscape ecology in conservation biology has rarely occurred in the context of defined landscapes. Conservation planning has focussed on representation of species diversity patterns and assumed that ecosystems, landscapes ...Read more