Author:Skinner, DGDate:Feb 1994The available data bases for accidents, road geometry (photolog output) and traffic counts were combined and the accident rates determined for two lane, four lane and six lane road categories as well as for 22 geometric element categories. ...Read more
Author:Hitge, JJ; Franz, RM; Schutte, PC; Kielblock, AJDate:Oct 1991This report is designed to convey information to mine management, environmental engineers, training personnel and acclimatization supervisors that will allow an appraisal of their mine's position with regard to heat acclimatization of workers ...Read more
Author:Giffen, MHDate:1975The diatom flora from several stations on the eastern shore of Saldanha Bay (South Africa) has been studied. Saldanha bay is situated on the western coast of South Africa 110Km north of Cape Town.Read more
Author:Gerber, A; Sinha, S; Van der Merwe, A; Kam, MDate:May 2012Over the past two decades, strong technical convergence has been observed between computing and engineering. Computing in this context includes Computer Engineering, Computer Science, Information Systems, Information Technology and Software ...Read more
Author:Hirschberg, G; Baradlai, P; Varga, K; Myburg, G; Schunk, J; Tilky, P; Stoddart, PDate:01 Mar 1999Formation, presence and deposition of corrosion product radionuclides (such as 60Co, 51Cr, 54Mn, 59Fe and/or 110mAg) in the primary circuits of water-cooled nuclear reactors (PWRs) throw many obstacles in the way of normal operation. During ...Read more
Author:Andhavarapu, EV; Loveday, Philip W; Long, Craig S; Heyns, PSDate:Jan 2010The semi-analytical finite element method (SAFE) is a popular method for analysing guided wave propagation in elastic waveguides of complex cross-section such as rails. The convergence of these models has previously been studied for linear ...Read more
Author:Vogel, JC; Fuls, A; Visser, EDate:Sep 2002The artificial radiocarbon produced by the thermonuclear bomb tests in the 1950s and 1960s significantly increased the level of C-14 in the environment. A detailed record of the subsequent changes in the C-14 concentration of the atmosphere ...Read more
Author:McLaren, M; Sidderas-Haddad, E; Forbes, ADate:Sep 2011It is now well known that matter may be trapped by optical fields with high intensity gradients. Once trapped, it is then possible to manipulate microscopic particles using such optical fields, in so-called optical tweezers. Such optical ...Read more
Author:Mosangi, Damodar; Moyo, Lumbidzani; Kesavan Pillai, Sreejarani; Ray, Suprakas SDate:Oct 2016In this study, a pharmaceutically active ingredient, acetyl salicylic acid (ASA), was intercalated into ZnAl layered double hydroxide (LDH). The LDH–ASA nanohybrid material was characterized by XRD, FTIR, SEM, ICP-MS, TEM and TGA. Successful ...Read morecb
Author:Olwal, TO; Masonta, Moshe TDate:Nov 2012This study has presented the End to End (E2E) upper bound capacity limits for high performance mesh nodes that can be deployed
in rural and remote areas. The achievable capacity limits for both irregular and clustered placements of nodes ...Read more
Author:Olwal, T; Masonta, Moshe T; Mekuria, Fisseha; Roux, KDate:Aug 2012Next generation fixed wireless broadband networks have immensely been deployed as mesh networks in order to provide and extend access to the internet. These networks are characterised by the use of multiple orthogonal channels. Nodes in the ...Read more
Author:Kumar, Neeraj; Fosso-Kankeu, E; Ray, Suprakas SDate:May 2019The development of new synthesis approaches for MoS2 is necessary to achieve controlled morphologies and unique physicochemical properties that can improve its efficiency in particular applications. Herein, a facile one-step hydrothermal route ...Read more
Author:Meiklejohn, C; Goss, H; Whisken, JDate:Nov 2008This paper presents the CSIR’s contribution to technical advances in the approach to provincial spatial planning in South Africa. It demonstrates the CSIR’s involvement in conducting the national Provincial Growth and Development Strategy ...Read more
Author:Wright, CDate:Oct 2012Schools have a unique advantage to help curb the negative human health effects of excess personal sun exposure by providing a sun safe environment and promoting sun protection behaviour among children and adolescents.Read more
Author:Chunilall, Viren; Wesley-Smith, J; Bush, TDate:Dec 2009Wood fibres are the raw material used in the production of dissolving pulp for the manufacture of cellulose derivatives such as viscose and cellulose acetate. At the microscopic level, the wood cell wall is organised in layers with different ...Read more
Author:Garland, Rebecca MDate:Feb 2012This article discusses the effects of acid mine drainage on human health. Skin irritation, kidney damage, neurological diseases are some of the human health effects.Read more
Author:Garland, Rebecca MDate:2011Acid Mine Drainage (AMD) has recently attracted lots of attention in South Africa, both in parliament and in the media. AMD is formed in the mine itself through a variety of chemical reaction pathways, before it enters the environment as ...Read more
Author:Vadapalli, VRK; Zvimba, JN; Mathye, M; Fischer, H; Bologo, LDate:Oct 2015This study investigated the implications of using two grades of limestone from a paper and pulp industry for neutralization of acid mine drainage (AMD) in a pilot sequencing batch reactor (SBR). In this regard, two grades of calcium carbonate ...Read more
Author:De Beer, Morris; Maree, JP; Wilsenach, J; Motaung, S; Bologo, L; Radebe, VDate:Sep 2010The gold mines on which much of South Africa’s wealth was founded are closed or closing. Mining concerns therefore have stopped pumping underground water from the mines which are filling with water (AMD) that is acidic, saline and vitiated ...Read more
Author:Martirosian, O; Davel, MDate:Nov 2008Diphthongs typically form an integral part of the phone sets used in English ASR systems. Because diphthongs can be represented using smaller units (that are already part of the vowel system) this representation may be inefficient. We evaluate ...Read more