Author:Hatch, GP; Tainton, NMDate:Jun 1997Grazing trials were established at two sites in the semi-arid savanna (Lowveld) of KwaZulu-Natal. The sites differed initially in range composition. Llanwarne was dominated by Themeda triandra, Panicum maximum and P. coloratum, and Dordrecht ...Read more
Author:Mfusi, Busisiwe J; Mathe, Ntombizodwa R; Popoola, Patricia A; Tshabalala, Lerato CDate:Oct 2019The AlSi10Mg alloy is known for its castability, corrosion resistance, high heat conductivity, low weight and good weldability. The applications of the aluminium alloy components includes heat exchangers that are subjected to high temperatures ...Read more
Author:Thabethe, S; Arendse, CJ; Mwakikunga, Bonex WDate:Dec 2014Advanced core–shell FeSi@SiO(subx) nanowires are observed when FeCl(sub3) vapour is made to flow over a SiO(sub2)/Si substrate at 1100 degress C. The thickness of the SiO(subx) sheath (d0) is found to depend inversely as the period of time ...Read more
Author:Masuku, EP; Moller, H; Curle, UA; Pistorius, PC; Li, WDate:Sep 2010The aim of SSM forming is to obtain a semi-solid structure (which is free of dendrites) with the solid present in a near spherical form. The nature of the SSM slurry (with solid spherical grains suspended in a liquid), makes it susceptible ...Read more
Author:Moller, H; Govender, G; Stumpf, WE; Knutsen, RDDate:2009The microstructures and mechanical properties of strontium modified semisolid metal high pressure die cast A356 alloy are presented. The alloy A356-F (as cast) has a globular primary grain structure containing a fine eutectic. Solution treatment ...Read more
Author:Milman, YV; Luyckx, S; Northrop, ITDate:1999The Vickers hardness of WC-Co alloys has been measured at temperatures ranging from -196 to 900 degrees C. The cobalt content of the alloys ranged from 10 to 24 vol% and the grain size from 0.5 to 2.3 um. It was found that, at all cobalt ...Read more
Author:Thejane, T; Nelwamondo, Fulufhelo V; Smit, Jacoba E; Marwala, TDate:Jan 2012A lumped transmission line model of the auditory canal is modified to study the influence of the number of segments used and the variation of the radius on the outer ear frequency response. A new second order polynomial is used to map the ...Read more
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