Author:Akhter, R; Ivanchev, L; Van Rooyen, Corney; Kazadi, BP; Burger, HPDate:2006Samples of aluminium alloy A356 were manufactured by Semi Solid Metals HPDC technology, developed recently in CSIR, Pretoria. They were butt welded in as cast conditions using as Nd: YAG laser. The best metal and weld microstructure were ...Read more
Author:Baloyi, NM; Pityana, Sisa L; Tlotleng, Monnamme; Meacock, C; Popoola, PDate:Dec 2012Laser coating is an advanced coating technology used for improving the surface properties of metal components. The coatings produced are thick, dense, and crack-free with continuous non-porous microstructures having uniform composition which ...Read more
Author:Tlotleng, Monnamme; Sukla, M; Akinlabi, E; Pityana, Sisa LDate:Aug 2013This research work seeks to establish titanium alloys (Ti-6Al-4V), in the field of tissue engineering, as material of interest for bone replacement with a particular focus on hip implants replacement. The aim of this study was to produce a ...Read more
Author:Kumar, S; Pityana, Sisa LDate:Nov 2010For making metallic products through Additive Manufacturing (AM) processes, laser-based systems play very significant roles. Laser-based processes such as Selective Laser Melting (SLM) and Laser Engineered Net Shaping (LENS) are dominating ...Read more
Author:Anochie-Boateng, Joseph; Komba, Julius J; O'Connell, Johannes SDate:Jul 2011There are concerns about the standard methods/procedures for quantifying shape properties of rock aggregates used in road and airfield pavements. The CSIR has recently acquired a portable three-dimensional (3D) laser scanning device to address ...Read more
Author:Breytenbach, IJ; Anochie-Boateng, Joseph; Paige-Green, P; Van Rooy, JLDate:Oct 2013Research was undertaken using an innovative three-dimensional (3D) laser scanning tool to study the shape and texture characteristics of road aggregate particles. Aggregate materials used for road construction, including G1 crushed rocks of ...Read more
Author:Burke, Michael GDate:Nov 2010The reliable detection and tracking of general objects is required by many field robotics applications, where autonomous agents need to navigate between and interact with dynamic targets in unstructured environments. This paper presents an ...Read more
Author:Ambushe, AA; Du Plessis, A; McCrindle, RIDate:Sep 2010Laser-induced breakdown spectroscopy (LIBS) will be used to determine the contents of heavy metals in soils and sediments. LIBS results will be compared with the results obtained by inductively coupled plasma-optical emission spectrometry ...Read more
Author:Michaelis, MM; Forbes, A; Bingham, R; Kellett, BJ; Mathye, ADate:Apr 2008A variety of laser applications in space, past, present, future and far future are reviewed together with the contributions of some of the scientists and engineers involved, especially those that happen to have South African connections. ...Read more
Author:Nkoana, R; Engelbrecht, FA; Marean, CWDate:Sep 2015Reconstructing the glacial maximum climates of the Cape south coast region of South Africa is important within the context of understanding the evolution of modern humans in this region. Simulating the Last Glacial Maximum (LGM) climate was ...Read more
Author:Maboya, ML; Meadows, ME; Reimer, PJ; Backeberg, Bjorn-Christoph; Haberzettl, TDate:Dec 2017The marine reservoir effect is the difference in radiocarbon (14C) between the atmosphere and the marine surface ocean. To overcome the dating errors induced, it is necessary to correct marine 14C ages for this effect. R is the difference ...Read more
Author:Clarke, ML; Vogel, JC; Botha, GA; Wintle, AGDate:01 Sep 2003Infrared stimulated luminescence (IRSL) ages have been obtained from a sequence of sandy colluvial deposits in northern Kwazulu-Natal. Comparison of the IRSL ages on sand-sized, potassium-rich feldspars, with radiocarbon dates on A-horizon ...Read more
Author:Talma, AS; Vogel, JCDate:Mar 1992An oxygen isotope temperature record over a large part of the past 30,000 yr has been obtained for the southern Cape Province of South Africa by combining data on the isotopic composition of a stalagmite from a deep cave with that of a confined ...Read more
Author:Dewar, G; Reimer, PJ; Sealy, J; Woodborne, SDate:Jun 2012In order to calibrate radiocarbon ages based on samples with a marine carbon component it is important to know the marine carbon reservoir correction or ΔR value. This study measured the ΔR on both known-age pre-bomb marine shells and paired ...Read more
Author:Makinana, S; Khanyile, PN; Khutlang, RethabileDate:Sep 2016In crime investigation, fingerprint identification plays a major role in identifying culprits. However, traditional procedure of acquiring latent fingerprint tends to be destructive and leads to a limitation of not being able to do further ...Read more
Author:Roux, FSDate:2010Stochastic (i.e. random and quasi-random) optical fields may contain distributions of optical vortices that are represented by non-uniform topological charge densities. Numerical simulations are used to investigate the evolution under free-space ...Read more
Author:Roux, FSDate:Mar 2012The statistical distributions of optical vortices or topological charge in stochastic optical fields can be inhomogeneous in both transverse directions. Such two-dimensional inhomogeneous vortex or topological charge distributions evolve in ...Read more
Author:Makondo, Ntshuxeko; Kobo, Hlabishi I; Mathonsi, TEDate:Sep 2023Software Defined Networking (SDN) is a computer network paradigm that has the potential to simplify network management and configuration by increasing network programmability and abstraction. In contrast to traditional networks, SDN separates ...Read more