Author:Chen, H; Botef, I; Guduri, B; Vallabhapurapu, SDate:Dec 2009The authors consider Polydimethylsiloxane (PDMS) as a prospective structural material candidate for a Micro Fuel Cell. The introduction of such a polymer as structural material will reduce the mass and the size of the micro fuel cell and ...Read more
Author:Osburn, LDate:Jan 2010Thermal comfort is influenced by environmental parameters as well as other influences including asymmetric heating and cooling conditions. Additionally, some aspects of thermal comfort may be exploited so as to enable a building to operate ...Read more
Author:Chen, H; Botef, I; Zheng, Haitao; Maaza, M; Vasudeva Rao, V; Srinivasu, VVDate:2011Carbon black filled Polydimethylsiloxane (PDMS) was considered as a prospective bipolar plate material candidate for a Fuel Cell. In this perspective, thermal conductivity and stability of the composites were investigated. Samples with filler ...Read more
Author:Masina, Bathusile N; Mwakikunga, Bonex W; Elayaperumal, M; Forbes, A; Bodkin, RDate:Jul 2011At present it is known that diamond tool degrades with time as it is normally used at high temperatures. One of the question the authors like to answer in this study is whether thermally induced problems in diamond tool arise as a result of ...Read more
Author:Malkappa, Kuruma; Bandyopadhyay, J; Ray, Suprakas SDate:Oct 2018Polylactide (PLA) is one of the most widely used organic bio-degradable polymers. However, it has poor flame retardancy characteristics. To address this disadvantage, we performed melt-blending of PLA with intumescent flame retardants (IFRs; ...Read more
Author:Zheng, Haitao; Modibedi, MmalewaneDate:Sep 2023In this study, the thermal electrooxidation of methanol on a Pt/MWCNT catalyst was examined in alkaline media across the temperature range of 298-363 K. The investigation utilized cyclic voltammetry (CV), quasi-state polarization, and ...Read more
Author:Bell, Teboho; Forbes, A; Ngcobo, Sandile; Naidoo, DarrylDate:Mar 2016We measured the thermally induced lens from the coefficient of defocus aberration using a Shack-Hartmann wavefront sensor (SHWFS). As a calibration technique, we infer the focal length of standard lenses probed by a collimated Gaussian beam ...Read more
Author:Kumirai, T; Conradie, Dirk CUDate:Feb 2012This chapter aims to evaluate the impact of thermal mass and high insulation (Rvalue) building envelope on energy consumption (space heating and space cooling) in six South African major cities using a building thermal simulation programme ...Read more
Author:Kumirai, T; Conradie, Dirk CUDate:Jan 2013The purpose of this paper is to analyse the thermal performance of two buildings. The one has a large thermal mass and the other a highly insulated low thermal mass. A typical 120 m2 suburban building was modelled in Ecotect. As part of the ...Read more
Author:Bandyopadhyay, Jayita; Mekoa, Raphaale C; Skosana, Sifiso; Ray, Suprakas SDate:Nov 2020Nucleated polypropylene (PP) masterbatch and the nanoclay-containing composite of PP are prepared by reactive processing method to improve the thermo-mechanical properties of virgin PP. PP masterbatch and the nanocomposite exhibits pronounced ...Read more
Author:Kumar, RDate:Feb 2012In this study, polyfurfuryl alcohol was absorbed/adsorbed on soy protein isolate films by immersing the SPI films in acid-catalysed furfuryl alcohol solution for 60 h followed by complete curing at 145–150 -C for 2 h. PFA absorbed/adsorbed ...Read more
Author:Kumirai, T; Bole, Sheldon; Conradie, Dirk CUDate:Oct 2012A thermal simulation model was prepared for a “typical” suburban building of 120 square meters and nine different passive designs were simulated to evaluate their impact on the heating and cooling load.Read more
Author:Arendse, CJ; Knoesen, D; Britton, DTDate:Apr 2006The material properties of hydrogenated amorphous silicon (a-Si:H) have been known to change when exposed to elevated temperatures. In this work the authors report on the thermal stability of the structural disorder, hydrogen content and ...Read more
Author:Nilen, RWN; Richter, PWDate:Apr 2008Biphasic calcium phosphate ceramics (BCP) comprising a mix of non-resorbable hydroxyapatite (HA) and resorbable b-tricalcium phosphate (b-TCP) are particularly suitable materials for synthetic bone substitute applications. In this study, HA ...Read more
Author:Nuru, ZY; Kotsedi, L; Arendse, CJ; Motaung, D; Mwakikunga, Bonex W; Roro, Kittessa T; Maaza, MDate:Oct 2015This contribution reports on the effect of thermal annealing on sputtered Pt–Al(sub2)O(sub3) multilayered selective solar absorber coatings deposited onto stainless steel substrates with a Mo IR reflecting buffer layer. The Pt–Al(sub2)O(sub3) ...Read more
Author:Arendse, CJ; Malgas, G; Oliphant, CJ; Muller, TFG; Knoesen, DDate:2009The material properties of hydrogenated amorphous silicon (a-Si:H) have been known to change when exposed to elevated temperatures. In this work researchers report on the thermal stability of the optical band gap and structural disorder in ...Read more