Author:Mwakikunga, Bonex W; Mudau, AE; Brink, N; Willers, Cornelius JDate:Sep 2011We observe the “invisible-to-the- naked-eye” flames of tungsten and vanadium ethoxide aerosols when ignited at moderate laser excitation (0 < Plaser< 70 W) by employing an IR thermo-graphic camera. No emission is seen in the visible range ...Read more
Author:John, Maya JDate:2019Bio-based products have been used in the packaging sector and now there has been a considerable growth in the use of biocomposites in transport (automotive and aerospace) and electronics sector. However, it is imperative that components used ...Read more
Author:Omolo, JJ; Maharaj, V; Naidoo, Dashnie; Malebo, HM; Mtullu, S; Lyaruu, HVM; Koning, CBDate:2014Phytochemical investigation of the stem and bark of Steganotaenia araliacea led to the isolation of two flavonoids. The structures of these compounds were identified as apigenin 4'-glucoside 1 and sophoraflavone B 2 using spectroscopic analysis ...Read more
Author:Kumar, R; Anandjiwala, RDDate:May 2012Biocomposites were successfully prepared by the reinforcement of soy protein isolate (SPI) with different weight fractions of woven flax fabric. The flax-fabric-reinforced SPI-based composites were then arylated with 2,2-diphenyl-2-hydroxyethanoic ...Read more
Author:Kumar, R; Anandjiwala, RDate:May 2011Natural fibers are used as reinforcement material for number of thermoplastic/thermoset polymers. The interest in using polylactic acid (PLA) as thermoplastic matrix to produce composites completely from 100% renewable resources has increased ...Read more
Author:Kumar, R; Anandjiwala, RDate:Sep 2009Water insoluble poly(furfuryl alcohol) (PFA) is an unexplored thermosetting resin which is synthesized from water-soluble furfuryl alcohol (FA). Commercially available FA has very low viscosity (6.9-7.0 cts at 25°C) and it is obtained from ...Read more
Author:Focke, WW; Muiambo, H; Mhike, W; Kruger, HJ; Ofosu, ODate:Feb 2014The utility of expandable graphite as a flame retardant for PVC, plasticized with 60 phr of a phosphate ester, was investigated. Cone calorimeter results, at a radiant flux of 35 kW m 2, revealed that adding only 5 wt.% expandable graphite ...Read more
Author:Cogan, D; Griffith, Derek J; Magidimisha, Edwin; Van Zyl, RDate:Oct 2018With the launch of the ZACube-2 nanosatellite, a new technique of wildfire detection and monitoring from space will be evaluated. Potassium is an essential plant macronutrient and all vegetation biomass fires exhibit characteristic spectral ...Read more
Author:White, WJ; Barker, D; Sutherland, ADate:Apr 2013The hazards involved in taking an aircraft from concept design to first flight are not fully comprehended by non-flight test qualified pilots. The FAA published and Aeronautical Circular with basic guidelines. This work was expanded to cater ...Read more
Author:Barker, DDate:Sep 2015Des Barker test flies the turbopropconverted FOCKE WULF PIAGGIO P149D-TP This flight test report presents a limited overview of some of the results of the flight test programme conducted on the Piaggio P149D TP aircraft in support of an ...Read more
Author:Barker, DDate:Dec 2015It’s a story of following one’s dream. Belonging to Werner Heiml, ZU-SFP originated from Germany where it was used as a basic trainer in the Luftwaffe. The P149D was originally developed and manufactured by Piaggio & Co, Italy, in 1953 and ...Read more
Author:Mittal, H; Jindal, R; Kaith, BS; Maity, Arjun; Ray, SSDate:Jan 2015This study reports the microwave-assisted synthesis of gum-ghatti (Gg)-grafted poly(acrylamide-co-methacrylic acid) (AAm-co-MAA) hydrogels for the development of biodegradable flocculants and adsorbents. The synthesized hydrogels were ...Read more
Author:Geldenhuys, CJDate:Feb 1993An annotated list of species recorded in the forests of the southern Cape is provided. The flora comprises 470 species which belong to 280 genera and 106 families (50 monogeneric families, 32 monospecific families and 193 monospecific genera). ...Read more
Author:Mabaso, NMDate:Nov 2006Slides include: FLOSS in support of strategic objectives; FLOSS in research and develpment; Research in support of national objectives; ImpactRead more
Author:Tucker, KCDate:Feb 2006Education is fundamental to development and the foundation for addressing and improving some of the key development challenges facing Africa. The focus groups recommend that FOSSFA convene a working group to address these important, pivotal ...Read more
Author:Tucker, KCDate:Feb 2006The FLOSSWorld Regional Workshop for Africa, will be held in conjunction with Idlelo 2, the foremost conference on FLOSS in Africa which will bring together people from across the continent (and the world) to assess current status and plot a ...Read more
Author:Ravat, E; Tucker, KCDate:Feb 2006Enver from South Africa started by talking about the AVOIR project at the University of the Western Cape (UWC) which involves 12 other African universities tasked with developing a learning management system called KEWL (Knowledge Environment ...Read more
Author:MacLucas, David ADate:Oct 2012The focus of the author's thesis was the aerodynamic flow field that develops as a result of the interaction of a moving plane shock wave with concave profiles. In this presentation, he discusses some of the interesting flow phenomena that ...Read more