Author:Nabarro, FRNDate:Mar 1997The Peierls stress is the stress required to move a dislocation through a perfect crystal lattice. Theoretical estimates show an exponential dependence on the ratio of the spacing between gliding planes and the unit slip distance. Nabarro ...Read more
Author:Yang, Y; Mkhonto, D; Cui, Q; Sahai, NDate:May 2011Bone sialoprotein (BSP) is an acidic, non-collagenous protein specific to bone proposed previously to promote hydroxyapatite (HAP) nucleation and modulate HAP nanocrystal growth. Specifically, two phosphorylated acidic amino acid sequences ...Read more
Author:Kiarii, EM; Govender, Krishna; Govender, PPDate:Nov 2019Clean and green renewable energy is of paramount importance in the world today. Ab initio calculations using density functional theory demonstrate that superlattice structures can result into lowering lattice thermal conductivity and have ...Read more
Author:Gledhill, Irvy MA; Roohani, H; Forsberg, K; Eliasson, P; Skews, BW; Nordström, JDate:Feb 2016Most computational fluid dynamics simulations are, at present, performed in a body-fixed frame, for aeronautical purposes. With the advent of sharp manoeuvre, which may lead to transient effects originating in the acceleration of the centre ...Read morecb
Author:Meissner, Richard; Jacobs-Mata, Inga MDate:Apr 2014Various multi-dimensional governance models have been suggested by scholars and policy makers alike as suitable conceptual lenses through which to view the complexity of water governance, particularly in international river basins. While these ...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: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: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: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: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
Author:Masina, Bathusile N; Mwakikunga, Bonex W; Forbes, ADate:Apr 2013We outline an all-optical and noncontact approach for controlled laser heating and measurement of the resultant temperature distribution at the surface of a material, respectively. We show how the boundary conditions of the heating problem ...Read more