Author:Ombinda-Lemboumba, Saturnin; du Plessis, A; Botha, LR; Rohwer, EG; Steenkamp, CMDate:Oct 2010The ultrafast dynamics of Zinc Phthalocyanine was studied using trasient absorption pump probe spectroscopy. Zinc Phthalocyanine was excited (pumped) at 672nm and probed by a white light continuum. The pump-probe technique used in this study ...Read more
Author:Kekana, PT; Sithole, Bishop B; Ramjugemath, D; Pillay, LDate:Jul 2014The main aim of this project is to develop a method that can effectively extract lignin from Kraft black liquors from South African mills in the form that would be suitable for valorisation into high value products. In this study the effects ...Read more
Author:Kekana, Petrus T; Sithole, Bishop B; Ramjugernath, DDate:Feb 2019Ultrafiltration of black liquor was studied in three different modules, namely, radial cross flow, rectangular cross flow and stirred cell over a wide range of operating conditions. Effects of different cut-off membranes on the permeate flux ...Read more
Author:Loveday, Philip W; Wood, DDate:Jan 2006A non-destructive examination procedure based on a guided wave inspection approach is used for the acoustic examination of glass fibre reinforced composite rods. This paper contains an investigation into the characteristics of guided wave ...Read more
Author:Munonde, Tshimangadzo S; Zheng, Haitao; Nomngongo, PNDate:Dec 2019The oxygen evolution reaction (OER) is an important reaction in water splitting. Nickel-iron layered double hydroxide (NiFe LDH) has been considered a potential catalyst for OER. Herein, we report a simple/green approach to improve the oxygen ...Read more
Author:Smit, MC; Ferreira, JA; Van Wyk, JD; Ehsani, MDate:Jan 1995The concept of an integrated structure for the capacitor, inductor and transformer of the series resonant converters presented. It is shown that the necessary capacitance can be achieved by using a bifilar primary and the leakage inductance ...Read more
Author:Jordaan, JP; Kruger, Carel P; Silva, B; Hancke, GPDate:Jul 2017Localization is important for a wide range of industries and applications. In underground mining, for instance, it is helpful to know the miners’ locations, particularly in emergency situations. One way this can be achieved is by using ...Read more
Author:Matseke, Mphoma S; Zheng, Haitao; Wang, YDate:Jun 2020Since ultrasonication was reported to be used for exfoliation of layered materials in water (Science-ref. 31), the method has never been explored in non-layered materials, in particular, the effect of ultrasonication on the surface property ...Read more
Author:Oosthuizen, MA; Pretorius, E; Oberholzer, HM; Van der Spuy, WJDate:Oct 2010Engineered nanoparticles are designed to perform specific functions and therefore have specific properties that could potentially be harmful. Nanoparticles such as titanium dioxide have the potential to become transparent and are therefore ...Read more
Author:Oosthuizen, MA; Pretorius, E; Oberholzer, HM; Van der Spuy, WJDate:Oct 2010Engineered nanoparticles are designed to perform specific functions and therefore have specific properties that could potentially be harmful. Nanoparticles such as titanium dioxide have the potential to become transparent and are therefore ...Read more
Author:Beyers, RDate:Aug 2006The Ulwazi concept is based on the digital inclusion of geographically separated classrooms being linked by broadband radio connections to enable virtual interactive and collaborative lessons using SMART technologies. What started out as a ...Read more
Author:Wallis, JDate:Oct 2012In this presentation the author describes the development of a low-cost, umbilical blood-flow monitoring device suitable for use by nurses in a primary health care setting, showing the impact that can be made for both patients and the health ...Read more
Author:Veerasamy, Namosha; Eloff, JHPDate:Aug 2011The aim of this paper is to clarify the concept of Network Warfare by looking at a typical example that illustrates both the exploitation and protection of information using various aspects of Information and Communication Technology (ICT). ...Read more
Author:Marais, Laurette; Van Zijl, LDate:Jul 2016We investigate self-verifying nondeterministic finite automata, in the case of unary symmetric difference nondeterministic finite automata (SV-XNFA). We show that there is a family of languages Ln=2 which can always be represented non-trivially ...Read more
Author:De Villiers, J Pieter; Jousselme, A-L; De Waal, A; Pavlink, G; Laskeyz, K; Blasch, E; Costa, PDate:Jul 2016In this paper, the principle taxonomy of the fusion process, the decision loop, is unified with uncertainty quantification and representation. A typical flow of information in the decision loop takes the form of raw information, uncertainty ...Read more
Author:Mutanga, Shingirirai S; Lunga, WDate:Jul 2021The increasing frequency of disasters induced by anthropogenic and natural hazards has epitomised the complex nature of dealing with uncertainty. Cyclone Idai-induced floods in Southern Africa had a series of foreseeable and unforeseeable ...Read more
Author:Mutanga, Shingirirai S; Lunga, W; Mutanga, Shingirirai SDate:Jul 2021The increasing frequency of disasters induced by anthropogenic and natural hazards has epitomised the complex nature of dealing with uncertainty. Cyclone Idai-induced floods in Southern Africa had a series of foreseeable and unforeseeable ...Read more
Author:Thiede, RN; Fabris-Rotelli, IN; Stein, A; Debba, Pravesh; Li, MDate:Nov 2019Informal unpaved roads in developing countries arise naturally through human movement without government authorities being informed. These roads are not authorized nor maintained by council, nor reliably mapped in quality-controlled online ...Read more
Author:De Villiers, Johan P; Laskey, K; Jousselme, A-L; Blasch, E; Pavlin, G; Costa, PDate:Jul 2015Mathematical and uncertainty modelling is an important component of data fusion (the fusion of unprocessed sensor data) and information fusion (the fusion of processed or interpreted data). If uncertainties in the modelling process are not ...Read more