Author:Makola, MM; Madala, NE; Dubery, IA; Steenkamp, Paul A; Kabanda, MMDate:Sep 20163,5-Dica®eoylquinic acid (diCQA) is a part of the chlorogenic acid group of compounds, largely isolated from food sources and possessing potent antioxidant activity. Only the trans–trans isomer exists in nature, however, abiotic stresses, ...Read more
Author:Chen, M; Roux, FSDate:Jun 2009The optical vortices that exist in strongly scintillated beams make it difficult for conventional adaptive optics systems to remove the phase distortions. When the least-squares reconstructed phase is removed, the vortices still remain. ...Read more
Author:Motaung, DE; Malgas, GF; Arendse, CJ; Oliphant, CJ; Knoesen, DDate:Jun 2009In this report, the influence of thermal annealing of thin P3HT films and P3HT:C60 composites were studied regarding their morphology and structural properties. Atomic force microscope measurements on P3HT films and P3HT:C60 composite disclose ...Read more
Author:Korontzi, S; Justice, CO; Scholes, RJDate:Jun 2003Biomass burning is an important ecosystem process in southern Africa, with significant implications for regional and. global atmospheric chemistry and biogeochemical cycles. In this paper, representative Land sat path-row scene locations, ...Read more
Author:Bachoo, A; Archibald, SDate:Jul 2007Information of vegetation dynamics derived from remotely sensed data is essential for regional natural resource management. A common approach involves using an n-day composite time-series of normalized difference vegetation index (NDVI) ...Read more
Author:Aramide, B; Pityana, Sisa L; Jamiru, T; Popoola, P; Sadiku, RDate:Aug 2021The increasing manufacturing technologies are a crucial aspect of industrialization. Laser additive manufacturing is the process of manufacturing using laser (heat) technology to manufacture components from scratch and or strengthening and ...Read more
Author:Smit, Jacoba E; Grobler, AF; Sparrow, RWDate:Jan 2011The attenuation behaviour of two different types of skin-like phantoms representing the range of Skin Types I to VI were investigated and compared to real human skin. Intralipid and PheroidTM artificial lipid membrane vesicles respectively ...Read more
Author:Smit, Jacoba E; Karsten, AE; Grobler, AF; Sparrow, RWDate:Sep 2010This presentation looked at the influence of variation in melanin content on absorbance spectra of liquid skin phantoms. Reasons for studying melanin, plus skin pigments, melanocytes, melanosomes, and melanin in particular, are discussed. The ...Read more
Author:Auret, JG; Damm, OFRA; Wright, GJ; Robinson, FPADate:Dec 1993The influence of increased air content of the cavitating liquid (distilled water) was studied in a rotating disk test rig. A rise in the total air content including dissolved and entrained air of the water in the under saturated range resulted ...Read more
Author:Molobi, E; Sacks, N; Theron, MarithaDate:Oct 2021The influence of z-increment on profile, porosity and microstructure of WC-10wt%FeCr single walls deposited using direct energy deposition was studied. Traverse speeds of 3.2 and 6.4 mm/s were used, while laser power was varied at 200, 300 ...Read more
Author:Farotade, GA; Popoola, AP; Pityana, Sisa LDate:Aug 2017The microstructural features and microhardness of ZrB(sub2) reinforced Ti-SiC coatings on Ti-6Al-4V substrate were studied.The deposition of these coatings was achieved via laser cladding technique. A 4.0 KW fiber delivered Nd: YAG laser was ...Read more
Author:Herselman, Martha E; Botha, Adèle; Mayindi, D; Reid, EDate:Aug 2018This paper aims to provide evidence of how the ecological system theory was applied to influence teachers in rural schools in South Africa to use technology in their classrooms.Read more
Author:Zerbian, S; Barnard, EDate:Sep 2008Tone in Bantu languages is rarely studied experimentally. This paper reports a production study which reveals the intricate interaction of tonal context and morphological structure in surface tone realization in Sepedi, a South African Bantu ...Read more
Author:Butgereit, L; Coetzee, LDate:Nov 2012Historical measurements of CO2 at South Africa's Cape Point have shown a steady increase from 355.6 ppm (parts per million) in 1993 to 387 ppm in 2011. Climatologists and politicians often disagree over the interpretation of those facts arguing ...Read more
Author:McGillivray, RDate:1993Local information distribution in electronic form in South Africa is a new and growing industry. Research shows that in any country the needs of users of information are largely for local information and to a lesser extent for overseas or ...Read more
Author:Van Rensburg, JR; Cronje, B; Du Buisson, UDate:31 Aug 2010The authors wish to continue sharing a ‘view from the practice’ in the continued creation and growth of an ‘ecosystem’ of social (information-focused) entrepreneurs – Infopreneurs® – in rural South African contexts. The paper will share the ...Read more
Author:Venter, KarienDate:Sep 2009The engineering process of setting speed limits is specialised and considers a wide array of factors, including the number of crashes, existing engineering interventions, types of vehicle, road users, vehicle volumes, modes of transport, road ...Read more