Author:Landman, WA; Engelbrecht, F; Park, RDate:Oct 2011The procedure to build an optimised seasonal prediction system that includes the prediction of global SST to force the CCAM is explained.Read more
Author:Lebea, Phiyani J; Bode, ML; Mathiba, K; Brady, DDate:Jun 2007The acyclic nucleoside phosphonates such as cidofovir, adefovir and tenofovir have proved to be effective in vitro (cell culture systems) and in vivo (animal models, clinical studies) against a wide variety of DNA virus and retrovirus infections. ...Read more
Author:Du Plessis, A; Theron, J; Berger, E; Louw, MEDate:Oct 2006N-terminal sequencing gave rise to homology to flagellin protein, product of the hag gene. protein, product of the hag gene. Gene was cloned by using degenerate primers and inverse PCR. The gene sequence as well as the up- and down- stream ...Read more
Author:Chunilall, Viren; Wesley-Smith, J; Bush, TDate:Nov 2006Dissolving pulp is the end-product of acid-bisulphite pulping and bleaching processes, during which almost all non-cellulosic wood components are removed to produce dissolving pulp with final a cellulose purity of up to 96%. Dissolving pulp ...Read more
Author:Chunilall, Viren; Wesley-Smith, J; Bush, TDate:Nov 2006The work presented will report on the use of AFM to study the CFA characteristics of dissolving pulp of a clone of Eucalyptus grown in compartments with contrasting growth rates (low and high), at different stages of the pulping process (solid ...Read more
Author:Mokhena, Teboho C; John, Maya JDate:Feb 2020This review describes the recent advances in the production and application of cellulose nanomaterials. Cellulose nanomaterials (CNMs), especially cellulose nanocrystals and cellulose nanofibers, can be produced using different preparation ...Read more
Author:Motloung, Mpho P; Ojijo, Vincent O; Bandyopadhyay, Jayita; Ray, Suprakash SDate:Jul 2019The interest in designing new environmentally friendly materials has led to the development of biodegradable foams as a potential substitute to most currently used fossil fuel–derived polymer foams. Despite the possibility of developing ...Read more
Author:Raghavendra, GM; Jayaramudu, T; Varaprasad, K; Sadiku, R; Ray, SS; Raju, KMDate:Apr 2013Natural carbohydrates (polysaccharides): gum acacia (GA) and gaur gum (GG) were employed in dilute solutions: 0.3%, 0.5% and 0.7% (w/v), as effective reductants for the green synthesis of silver nanoparticles (AgNPs) from AgNO3. The formed ...Read more
Author:John, Maya J; Thomas, SDate:Jun 2010Cellulose is the most abundant polymer on earth- has emerged as an ideal candidate for providing nanoparticles as reinforcing agents. There is a growing interest in cellulose nanocomposites within the research community and especially if the ...Read more
Author:Paige-Green, P; Netterberg, FDate:Jun 2004The introduction of the SABS EN 197-1 (SANS 50197-1) specification for cements in South Africa resulted in a change in the range of cements available for material stabilization for road layers. An investigation was carried out to assess the ...Read more
Author:Bredenhann, SJ; Paige-Green, P; Jenkins, KJDate:Aug 2012In South Africa extensive use is made of cement stabilized materials in the structural layers of both new road and construction works and pavement rehabilitation. The construction process plays a role in the ultimate strength obtained for the ...Read more
Author:De Villiers, Johan P; Leuschner, FW; Geldenhuys, RDate:Nov 2008Inverse distortion is used to create an undistorted image from a distorted image. For each pixel in the undistorted image it is required to determine which pixel in the distorted image should be used. However the process of characterizing a ...Read more
Author:Hugo, S; Land, K; Madou, M; Kido, HDate:Feb 2014Microfluidic systems enable precise control over tiny volumes of fluid in a compact and low-cost form, thus providing the ideal platform on which to develop point-of-care diagnostic solutions. Centrifugal microfluidic systems, also referred ...Read more
Author:Namane, M; Sithole, Bishop B; Ramjugernath, DDate:Oct 2015This study describes centrifugal recovery as an improved method for collection of lignin isolated from black liquor obtained from a South African kraft mill. Precipitation of lignin was achieved by utilising 6 M sulphuric acid. Recovery of ...Read more
Author:Wall, KDate:2011The infrastructure investment in South Africa over the century since Union is staggering. This investment has arisen partly because of population increase (from 6 million in 1910 to an estimated 50 million in 2011); partly because of ...Read more
Author:Snedden, Glen C; Lambert, TDate:Sep 2003This investigation examines the results of the CFD analysis of the effect of coolant impingement on the back of a disc (or wheel) as part of the secondary cooling
circuit of the T56-A-15LFE turboprop engine. As part of the collaborative study ...Read more