Author:Van Wyngaardt, WM; Simpson, BRSDate:Oct 2006Four radionuclides with electron-capture-based decay schemes have been directly measured by a liquid scintillation coincidence extrapolation technique. The advantage of using (LS) counting in the 4p channel is that self-absorption does not ...Read more
Author:Ndiege, JRA; Herselman, Martha E; Flowerday, SVDate:Oct 2014Many small and medium enterprises (SMEs) in developing countries continue to be challenged by their information technology (IT) adoption process, which is often characterized by a number of deficiencies. The purpose of this study was to examine ...Read more
Author:Murray, K; Roux, DJ; Nel, JL; Driver, A; Freimund, WDate:Mar 2011The ability of an organisation to recognise the value of new external information, acquire it, assimilate it, transform, and exploit it, namely its absorptive capacity (AC), has been much researched in the context of commercial organisations ...Read more
Author:Ndiege, JR; Herselman, Martha E; Flowerday, SVDate:Jun 2012The purpose of this article is thus to provide a review of the literature on this subject with the aim of finding out how both large and small enterprises stand to benefit from AC. We intend to affirm that, by successfully carrying out a ...Read more
Author:Adedeji, KB; Ponnle, AA; Abe, BT; Jimoh, AA; Abu-Mahfouz, Adnan MI; Hamam, YDate:Jun 2018Metallic pipelines have attendant problems of alternating current (AC) assisted corrosion when installed in the utility corridor with high voltage transmission lines. Research studies in the past and recent years have shown that this corrosion ...Read more
Author:Du Plessis, Louw; Ulloa-Calderon, A; Harvey, JT; Coetzee, NFDate:Oct 2017This paper provides a brief description of the technological developments involved in the development and use of the Heavy Vehicle Simulator (HVS) accelerated pavement testing equipment. This covers the period from concept in the late 1960’s, ...Read more
Author:Schulze, C; Roux, FS; Dudley, Angela L; Rop, R; Duparre, M; Forbes, ADate:2015We introduce a class of light field that angularly accelerates during propagation. We show that the acceleration (deceleration) may be controlled by adjustment of a single parameter, and tuned continuously, down to no acceleration at all. As ...Read more
Author:Schulze, C; Roux, FS; Dudley, Angela L; Rop, R; Duparre, M; Forbes, ADate:Apr 2015We introduce a class of light field that angularly accelerates during propagation. We show that the acceleration (deceleration) may be controlled by adjustment of a single parameter, and tuned continuously, down to no acceleration at all. As ...Read more
Author:Malan, AG; Oxtoby, Oliver FDate:Sep 2012In this paper we propose a fast, parallel 3D, fully-coupled partitioned hybridunstructured finite volume fluid–structure-interaction (FSI) scheme. Spatial discretisation is effected via a vertex-centered finite volume method, where a hybrid ...Read more
Author:Henrico, S; Coetzee, S; Cooper, Antony K; Rautenbach, VDate:Oct 2020Geospatial information and technologies are widely used in South Africa, initially mostly with proprietary software but today, mature, open source alternatives such as QGIS are available. We wanted to find out if and why South African users ...Read more
Author:Dlodlo, NDate:May 2009This paper describes the impact of socio-economic factors on girls and women’s access to Information and Communication Technology (ICT) education and training in a rural South African environment and recommends strategies for improved access ...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: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: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: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: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