1,518 research outputs found

    In Search of an Alternative to Fire for Manipulating Bush Encroachment in the Arid Karoo Region of South Africa

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    Burning of natural rangeland in order to rejuvenate and increase palatability of grazing is a common practice in parts of South Africa. Concern about the long-term effects on biodiversity and the depletion of much-needed soil car-bon led to this investigation

    Comparison of the composition and opsonic activities of imported and South African-manufactured intravenous and intramuscular immunoglobulin preparations

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    We compared the composition and opsonic activities for two common microbial pathogens (Staphylococcus aureus and Streptococcus pyogenes) of various imported intravenous (IV) (Sandoglobulin, Octagam and Gammagard) and intramuscular (IM) (Beriglobin and Globuman Berna) immunoglobulin (Ig) preparations with those of the corresponding locally manufactured products, Polygam (IV) and Intragam (IM). When tested at equivalent concentrations (1 g/1 00 ml) the total IgG and IgG subclass concentrations of the various IV and IM preparations were similar. All the test preparations (IV and IM) possessed similar opsonic activity for S. aureus and S. pyogenes. These findings demonstrate that, in respect of IgG content and protective biological activity, Intragam and Polygam, the locally manufactured IM and IV Ig preparations, respectively, compared extremely favourably with the corresponding imported products

    Suid-Afrika se volhoubaarheid in die lig van wĂŞreldbeelde: Prakties-teologiese perspektiewe

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    Sustainability in South Africa in the light of worldviews: Practical theological perspectives. According to the index of Fund for Peace (FFP) regarding the sustainability of different countries, the situation in South Africa is unfavourable due to phenomena such as a growing demographic pressure on natural resources and unequal distribution of wealth. This condition can be attributed to a greater or lesser extent to the way in which South Africa is governed by the ruling party. The researchers investigate whether this unsustainable situation could possibly be connected to the worldview(s) of the ruling party. The concept worldview is briefly described and analysed in the context of the composition and development of the ruling political party. After that, some connections between worldview and sustainability are examined. The article concludes by exploring the way in which Christians who want to obey God’s Word in all aspects of their lives, should think about sustainability and about what they could do to improve the situation in South Africa. The central theoretical argument of this article is that a reformational worldview can provide a framework for people to evaluate and change, if necessary, their thinking, decisions and behaviour in order to promote sustainability in South Africa to the benefit of all her citizens

    Determining tourism graduate employability, knowledge, skills, and competencies in a VUCA world : constructing a tourism employability model

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    Abstract: The aim of this study was to determine tourism graduates’ employability, knowledge, skills, and competencies in a VUCA world by constructing a tourism employability model. The concept of employability differs depending on the context, as well as the views of the people making employment decisions and those seeking employment in a VUCA world. It has become imperative to ensure an adequate level of preparedness among tourism graduates in a world dominated by technology, by understanding what the important knowledge, skills, and competencies are to enhance graduates’ chances of securing and sustaining employment in the tourism industry in South Africa..

    Die Basaalmetabolisme-snelheid van blanke en bantoeverpleegsters

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    Patterns of Striped order in the Classical Lattice Coulomb Gas

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    We obtain via Monte Carlo simulations the low temperature charge configurations in the lattice Coulomb gas on square lattices for charge filling ratio ff in the range 1/3<f<1/21/3 < f < 1/2 . We find a simple regularity in the low temperature charge configurations which consist of a suitable periodic combination of a few basic striped patterns characterized by the existence of partially filled diagonal channels. In general there exist two separate transitions where the lower temperature transition (TpT_p) corresponds to the freezing of charges within the partially filled channels. TpT_p is found to be sensitively dependent on ff through the charge number density ν=p1/q1\nu = p_{1}/q_{1} within the channels.Comment: 4 pages, 8 figure
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