Author:Sinha Ray, J; Sinha Ray, SuprakashDate:Feb 2018The performance of a heterogeneous material, such as polymer nanocomposites (PNCs) is dictated by three main factors: (i) the inherent properties of the components; (ii) interfacial interactions; and (iii) structure of the PNCs. The structure ...Read more
Author:Grieve, G; Gouws, SDate:Apr 2010During the manufacture of Portland-type cements, significant emissions of carbon dioxide occur, some of which comes from the burning of fuel in the kiln, and the balance from the chemical dissociation of limestone (CaCO3). In South Africa the ...Read more
Author:Keet, CM; Fillotrani, PRDate:Sep 2013Software interoperability may be achieved by using their respective
conceptual data models. However, each model may be represented
in a di erent conceptual data modelling language for the tool's
purpose or due to legacy issues. Several ...Read more
Author:Staphorst, L; Pretorius, L; Pretorius, TDate:Jul 2013Technology Intelligence (TI) involves the process of capturing technology related data, converting this data into information by determining relational connections and refining information to produce knowledge that can guide strategic decision ...Read more
Author:Oliphant, CJ; Arendse, CJ; Prins, SN; Malgas, GF; Knoesen, DDate:Mar 2012In this study we investigate the structural changes of a burnt-out tantalum filament that was operated at typical hydrogenated nanocrystalline silicon synthesis conditions in our hot-wire chemical vapour deposition chamber. Scanning electron ...Read more
Author:Bembe, MJ; Clarke, W; Lysko, Albert ADate:Nov 2010Phased array antenna’s radiation pattern can be electronically controlled, which makes them relevant solution for multipath interference. Electronically Steerable Parasitic Array Radiator (ESPAR) antenna systems are part of the family of ...Read more
Author:Mahladisa, MA; Ackermann, L; Ngoepe, PEDate:Sep 2005A series of gold clusters consisting of aggregates of from 13 to 147 atoms was studied using the Sutton-Chen type many-body potential in molecular dynamics simulations. The properties of these clusters at temperatures from 10 K to 1000 K were ...Read more
Author:Tshwane, David M; Modiba, RosinahDate:Jul 2022TiAlV intermetallic alloys are used as key functional materials in various industries due to their superior properties. However, our understanding of their structural phase stabilities is still limited and remains confined. In this work density ...Read more
Author:Saasa, Valentine R; Mukwevho, E; Mwakikunga, Bonex WDate:Sep 2016There has been tremendous interest in ZnO as well as carbon materials; these are already in various technological devices. Work on the combination of ZnO and carbon materials is gaining interest [8-10] since these composites benefit from the ...Read more
Author:Kabongo, GL; Mhlongo, Gugu H; Mothudi, BM; Hillie, Kenneth T; Mbule, PS; Dhlamini, MSDate:Jul 2017In the present study, a succession of thulium (Tm)-doped zinc oxide (ZnO) nanostructures samples were prepared by sol-gel method using zinc acetate dihydrate, thulium nitrate pentahydrate and sodium hydroxide species with absolute ethanol as ...Read more
Author:Jayaramudu, J; Das, K; Sonakshi, M; Reddy, GSM; Aderibigbe, B; Sadiku, R; Ray, Suprakas SDate:Mar 2014Zinc oxide (ZnO) powder was investigated in terms of its use as filler in order to improve the inherent properties of PLA. Biocomposite films of PLA with different loadings of ZnO were prepared by solution casting method. Morphological analyses ...Read more
Author:Motsoeneng, TS; Mochane, MJ; Mokhena, Teboho C; Mathew, Maya JDate:2020Lignin can be extracted from a variety of plants such as soft and hard wood which account for the different functional groups and contents as well as number average molecular weights. Different chemical treatments have been employed to isolate ...Read more
Author:Jayaramudu, J; Maity, Arjun; Sadiku, ER; Guduri, BR; Rajulu, AV; Ramana, CHVV; Li, RDate:Oct 2011Natural cellulose fabrics were newly identified from the branches of the Cordia dichotoma. The structure of the fabrics was analysed by FTIR and X-ray diffraction. The net-like morphologies of the untreated, bleached and 5% NaOH (alkali) ...Read more
Author:Bode, ML; Gates, PJ; Gebretnsae, SY; Vleggaar, RDate:Mar 2010The structure elucidation of a novel natural product pavettamine (1), the causal agent of the plant toxicosis gousiekte, is reported. The structure was defined by analysis of NMR and MS data and the relative configuration followed from the ...Read more
Author:Eichinger, BE; Wimmer, E; Pretorius, JDate:Jun 2001The lambda-transition of elemental sulfur occurring at about 159°C has long been associated with the conversion of cyclic S8 rings (c-S8) to amorphous polymer (a-S) via a ring opening polymerization. It is demonstrated, with the use of both ...Read more
Author:Fourie, CJS; Henry, G; Maré, LPDate:Sep 2009The Waterberg Coalfield is destined to become the major source of energy for South Africa in the future. In 2008, Coaltech Research Organisation funded an airborne magnetic and radiometric survey over the Karoo-age Ellisras Basin in which the ...Read more