Author:Burger, L; Forbes, ADate:Aug 2008The authors apply a new method of modeling Porro prism resonators, using the concept of rotating loss screens, to study stable and unstable Porro prism resonator. They show that the previously observed petal–like modal output is in fact only ...Read more
Author:Mokhothu, Thabang H; Guduri, BR; Luyt, ASDate:Dec 2011In this study the morphology and properties of a biodegradable aliphatic–aromatic copolyester mixed with kenaf fiber were investigated. Untreated kenaf fiber, as well as kenaf fiber treated with NaOH, and with NaOH followed by silane coupling ...Read more
Author:John, Maya J; Bellmann, C; Anandjiwala, RDDate:Oct 2010This paper presents an experimental study on the use of zein as a coupling agent in natural fibre composites. Kenaf nonwovens were treated with zein coupling agent, which is a protein extracted from corn. The surface characteristics of untreated ...Read more
Author:Butgereit, L; Botha, RA; Van den Heever, MDate:Jul 2012Different human languages look different from other human languages. To use a term from the computer industry, each human language has its own “look and feel”. European English speakers can easily recognise a phrase such as “Comment allez-vous?” ...Read more
Author:Mhlanga, N; Ray, SSDate:Jan 2015For decades, studies on drug-release kinetics have been an important topic in the field of drug delivery because they provide important insights into the mechanism of drug release from carriers. In this work, polylactide (PLA), doxorubicin ...Read more
Author:Salehiyan, Reza; Nofar, M; Ray, Suprakash S; Ojijo, Vincent ODate:Jul 2019This study illustrates the effects of the kinetic parameters [processing time, polyvinylidene fluoride (PVDF) viscosity, carbon nanotube (CNT) aspect ratio, and processing method] on the CNT migration and consequently the viscoelastic properties, ...Read more
Author:Masindi, Vhahangwele; Gitari, WM; Ngulube, TDate:Sep 2015In the present study, the defluoridation capabilities and adsorption mechanisms of cryptocrystalline magnesite were evaluated. All experiments were done by batch procedure. Conditions assessed include time, dosage, concentration, pH and the ...Read more
Author:Mashangoane, BF; Chirwa, EN; Mahlathi, Christopher DDate:May 2023Palladium is a rare platinum group metal concentrated in the Earth's core and mantle; because of its scarcity, its waste recovery and reuse options are economically appealing. Traditional strategies for extracting PGMs from effluents have a ...Read more
Author:Cambridge, GJ; Smith, R; Gush, Kim LDate:2008The Digital Doorway is a joint project between the South African Department of Science and Technology (DST) and the Meraka Institute, aimed at the promotion of computer literacy and associated skills in Africa. The assumption is that people ...Read more
Author:Coetzer, W; Moodley, D; Gerber, ADate:Nov 2014We modeled expert knowledge of arthropod flower-visiting behavioral ecology and represented this in an event-centric domain ontology, which we describe along with the ontology construction process. Two smaller domain ontologies were created ...Read more
Author:Coetzer, W; Moodley, D; Gerber, ADate:Nov 2017Semantic heterogeneity hampers efforts to find, integrate, analyse and interpret ecological data. An application case-study is described, in which the objective was to automate the integration and interpretation of heterogeneous, flower-visiting ...Read more
Author:Stevenson, L; Britz, AA; Home, TDate:Dec 2008The modal satisfiability problem is solved either by using a specifically designed algorith, or by translating the modal logic formula into an instance of a different class of problem, or, more recently, a constraint satisfaction problem. In ...Read more
Author:Huntley, BJDate:1985The development of the world's largest open-cast uranium mine in the Namib Desert introduced rapidly increasing demands for water to the area in the early 1970's. In the absence of scientifically based information on the likely impact of water ...Read more
Author:Shingange, Katekani; Swart, HC; Mhlongo, Gugu HDate:Feb 2020Perovskite based oxides provide various compositional combinations between different oxides for tuning gas sensing performances. Herein, we present lanthanum based perovskites (LaFeO3 and LaCoO3) nanofibers (NFs) synthesized through the ...Read more
Author:Mgangira, Martin BDate:2006Soil improvement can be achieved through mechanical stabilisation using industrial byproducts. Clayey soils were blended with waste foundry sand to examine its influence on the geotechnical engineering properties of the soils. The waste foundry ...Read more
Author:Ndlela, Luyanda L; Oberholster, Paul J; Van Wyk, JH; Cheng, Po HsunDate:Apr 2019Biological control of cyanobacteria is a viable means of controlling nuisance bloom occurrences; however the majority of studies done are against Microcystis sp., with a commonly lytic effect caused. Filamentous cyano-bacteria such as ...Read more