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Now showing items 1813-1832 of 9045
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(Elsevier, 2014-08)We present a systemic study on the structural, optical and magnetic properties of the un-doped and Mn doped ZnO thin films grown by aerosol spray pyrolysis at different deposition times. XRD profilinghas shown that the ...
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(Elsevier, 2017-07)In this work, electron paramagnetic resonance (EPR) experiment on undoped ZnO and Al doped ZnO (AZO) nanoparticles prepared by facile sol–gel method were investigated. The effects of the Al concentration on room temperature ...
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(2007-05)In exploring the possibility of establishing a theory of construction for development, this paper reviews concepts of theory and theory formulation, contextualises optimal developmental modalities, describes the role of ...
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(2012-05)This paper presents the experiences and lessons from the Accelerating Sustainable Water Services Delivery (ASWSD) initiative that is currently being implemented in South Africa. The initiative is being spearheaded by the ...
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(ICDRB-Centre Health Population Research, 2006-03)The study was conducted to assess the effect of definition of episode on diarrhoeal morbidity and to develop a means of adjusting estimates of morbidity for the definition of episode used. This paper reports on a cohort ...
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(Alive2green, 2013-01)Worldwide increasing attention to energy consumption and associated environmental impacts thereof has resulted in a critical attitude towards energy usage of building. Increasing costs of energy and dependence on energy ...
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(National Academy of Sciences, 2013-04)Fire is a ubiquitous component of the Earth system that is poorly understood. To date, a global-scale understanding of fire is largely limited to the annual extent of burning as detected by satellites. This is problematic ...
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(2005-11)In the first State of Logistics in 2004 the need for measurement and revitalisation of basic infrastructure in South Africa' dual economy was accentuated. The process of addressing these needs has started with the release ...
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(Taylor&Francis, 2016)Oceans are increasingly gaining in importance in terms of enabling international trade via linking sellers and buyers. The behaviour patterns of such linking enablers on the oceans are receiving more attention from a ...
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(Taylor & Francis, 2014-11)Al(sup3+)-bentonite clay (Alum-bent) was prepared by ion exchange of base cations on the matrices of bentonite clay. Intercalation of bentonite clay with Al(sup3+) was performed in batch experiments. Parameters optimized ...
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(Southern African Institute of Mining and Metallurgy (SAIMM), 2016-10)This work evaluates the deformation behaviour, at warm working temperatures, of green particle-reinforced aluminium composites produced by powder blending in a high-energy ball mill. The work focuses on metal matrix ...
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(Bureau for Scientific Publishers, 1995-05)A novel method has been developed for increasing the production of commercially valuable enzymes, such as proteases, beta-glucanases, alpha-amylases and levansucrase. It is dependent on two genes cloned from Bacillus brevis, ...
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(Elsevier, 2016-03)Dehalogenation of aryl halides was demonstrated using polyaniline/zero valent iron composite nanofiber (termed as PANI/Fe0) as a cheap, efficient and environmentally friendly heterogeneous catalyst. The catalyst was prepared ...
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(International Union of Crystallography, 2009-01)The three-ring eudesmanolide, C15H16O3, is a natural product isolated from Dicoma anomala Sond. (Asteraceae). The compound contains an endo-exo cross conjugated methylenecyclohexenone ring with an envelope conformation ...
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(Elsevier, 2015-10)The authors applied advanced mapping techniques to 291 230 acoustic emission (AE) events as small as around M -4 that were recorded over 50 days by an ultra-high resolution network close to the active front of a tabular ...
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(Pergamon-Elsevier Science Ltd, 2001-09)The depth of mining in the gold mines of the Witwatersrand Basin, South Africa is continuously increasing, with several mines already stopping at depths exceeding 3500m. Due to the high stresses imposed on the rock mass ...
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(Association of Schools of Construction of Southern Africa (ASCOSA), 2017-07)This paper presents a project delivery model developed for use by public sector clients tasked with using innovative building technologies (IBTs) in lieu of conventional building technologies (CBTs) in the delivery of ...
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(2006-02)There is a great need for institutional innovations aimed at improving access to basic water services in South Africa, and sustaining that improvement. In support of effective delivery, the CSIR, with the support of the ...
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(Bureau Scientific Publications, 1999-12)Short-listing of medicinal tree species for propagation was done through three criteria; number of bags sold, price per bag and mean scarcity value. There is a strong correlation between the mean scarcity values and number ...
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(Wiley-Blackwell, 2010-06)The water quality of almost all of South Africa’s river systems has worsened progressively as a result of increasing urbanization and industrialization; the adverse effects of poor water quality have been compounded by the ...
Now showing items 1813-1832 of 9045
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