Author:Modibedi, Remegia MDate:Dec 2011Alternative energy resources are needed to alleviate the energy crisis. Fuel cells are one of the examples to help solve the problem. The main goal of this research is to reduce the amount of Pt required in fuel cells. Thus the outcome of ...Read more
Author:Booth, R; Meyer, T; Varzinczak, IDate:Sep 2012We introduce Propositional Typicality Logic (PTL), a logic for reasoning about typicality. We do so by enriching classical propositional logic with a typicality operator of which the intuition is to capture the most typical (or normal) ...Read more
Author:Fourie, Nicolene MRDate:Aug 2023This paper discusses the policy environments of two acts in South Africa, the South African Spatial Data Infrastructure Act (Act 54 of 2003) (SDI Act) and the Promotion of Access to Information Act, 2000 (Act 2 of 2000), which promote ...Read more
Author:Steyn, MaronelDate:01 Sep 2010Sub-Sahara Africa continues to be the region most affected by the Human Immunodeficiency Virus/Acquired Immunodeficiency Syndrome (HIV/AIDS) (WHO, 2009). South Africa alone is home to 14 % of the world’s HIV positive population (UNAIDS, 2006). ...Read more
Author:Mokonyama, Mathetha T; Kistan, Kenny FDate:Apr 2008Based on the life cycle dynamics of the South African population, the paper investigates the implications of such dynamics on the design requirements of public transport services. The life cycle dynamics considered in this paper refer ...Read more
Author:Meissner, RichardDate:May 2015This study report on the presentation about the PULSE cube: Paradigms and theories for creating opportunities and solving problems.Read more
Author:Jacobs, Cobus; Kriel, S; Bollig, C; Jones, TDate:Jul 2006This presentation provides the overview of what laser pulse energy control is and why we need it. The simulation, experimental setup and results are shownRead more
Author:Botha, N; Botha, L; Du Plessis, A; Uys, H; Schoewer, HDate:Oct 2010The design of the pulse shaping setup as well as factors taken into account in choosing a specific setup will be discussed. We investigate the generation of simple shaped pulses to test our pulse shaper setup. Difference frequency mixing is ...Read more
Author:Botha, N; Botha, L; Du Plessis, ADate:Jul 2009Femtosecond pulse shaping can be done by different kinds of pulse shapers, such as liquid crystal spatial light modulators (LC SLM), acousto optic modulators (AOM) and deformable and movable mirrors. A few applications where pulse shaping is ...Read more
Author:Yalisi, B; Roro, Kittessa T; Tile, N; Forbes, ADate:Jul 2011Due to their excellent properties CNTs is believed to be the best candidate to be an absorbing elements in the composite. “Stoichiometric transfer” makes PLD a suitable candidate for the composite growth. PLD experimental setup is discussed. ...Read more
Author:Halland, YDate:30 Sep 2002With the rapid development of the Internet and Worldwide Web over the last 10 years, shopping online is no longer a novelty. Virtually (excuse the pun) anything can be bought online these days. From serious scientific information to ready ...Read more
Author:Dudley, Angela L; Rop, R; Litvin, IA; Lopez-Mariscal, C; Roux, FS; Forbes, ADate:Aug 2012We experimentally generated superpositions of higher-order Bessel beams that possess no global orbital angular momentum (OAM), yet exhibit an angular rotation in their intensity profile as the field propagates. The digital holograms encoded ...Read more
Author:Moleele, SS; Gravestock, D; Rousseau, AL; Van Zyl, RLDate:Sep 2008Malaria causes the death of 2-3 million people annually, most of these children under 5 years of age. Approximately 300 million cases of acute malaria are reported each year, 90% of these in Africa. Until recently, folate metabolism has been ...Read more
Author:Esser, MJD; Strauss, Hencharl J; Koen, WS; Preussler, D; Nyangaza, K; Bollig, CDate:Jun 2009The authors have, through careful analysis of spectroscopic data, designed and demonstrated a diode-end-pumped, quasicontinuous wave Tm:GdVO4 laser operating at 1892 nm in order to pump a Q-switched Ho:YLF laser. The Ho:YLF maximum output ...Read more
Author:Genthe, Bettina; Oberholster, Paul JDate:May 2017Conventional wastewater treatment processes such as activated sludge and biofilms are seldom used in rural South Africa due to lack of electricity and financial resources. This presentation focuses on phyco-remediation as an environmentally ...Read more
Author:Musee, NDate:Aug 2009This presentation investigates the presence of evidence of increasing quantities of nanowaste streams into the environment, as well as the trends for nanowastes generation. The growth of nano-related patents is discussed, and the growth in ...Read more
Author:Khoza, Mary; Sinha Roy, Jayita; Ray, Suprakas S; Ojijo, Vincent ODate:Nov 2020Traces of quaternary ammonium salt from dispersed nanoclay in PA6/6.6 polymer nanocomposite may have some potential toxicological effects that could pose a risk to human health. Modified nanocomposite system was produced by masterbatch melt ...Read more
Author:Malik, HH; Erasmus, Louwrence D; Pretorius, J-H CDate:Jun 2017A description is provided on how good systems engineering processes and methods are used so that gaps can be determined by quantitative methods for informing training programs. The Systems Engineering Capability Model (SECM) is used to determine ...Read more
Author:Gush, Kim L; De Villiers, MRDate:Oct 2011Digital Doorways are rugged multi-terminal computer systems for promoting self-directed, unassisted or peer-assisted leaning in low- income communities where computer infrastructure is limited. Users develop the necessary skills through ...Read more