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
Author:George, Theresa B; Anochie-Boateng, Joseph; Jenkins, KJDate:Sep 2020In South Africa research is currently under way to determine the suitability of using locally available recycled crushed glass as a partial fine aggregate substitute in the production of asphalt mixes. This paper characterises the laboratory ...Read more
Author:Wellington, Kevin W; Kolesnikova, NIDate:May 2012Nuclear monoamination of a 1,4-naphthohydroquinone with primary aromatic amines was catalysed by the commercial laccase, Novozym 51003, from Novozymes to afford aminonaphthoquinones. The synthesis was accomplished by reacting a mixture of the ...Read more
Author:Wellington, Kevin W; Govindjee, Varsha P; Steenkamp, PaulDate:Dec 2018A commercial laccase, Suberase from Novozymes, catalyses the synthesis of triaminated cyclohexa-2,4-dienones and a methylbenzene-1,2-diol derivative. The primary amine (analine) and the catechol was reacted under mild conditions (40C) in a ...Read more
Author:Wellington, Kevin W; Gordon, GER; Ndlovu, LA; Steenkamp, PDate:Jun 2013Oxidative C-S and C-C bond formation with aryl and alkyl thiols was catalyzed under mild conditions in a reaction vessel open to air at pH 4.5 in the presence of a commercial laccase (Novozym 51003 or Suberase) and a cosolvent (DMF) to afford ...Read more
Author:Sibisi, TH; Shongwe, MB; Tshabalala, Lerato C; Mathoho, IpfiDate:Aug 2023A cutting-edge manufacturing technology that uses powder or wire as the feeding material and a high-energy heating source is known as metal additive manufacturing (AM). High-performance components for automotive, aerospace, medical, and energy ...Read more
Author:Coetzer, KL; Erasmus, BFN; Witkowski, ETF; Bachoo, AKDate:Jul 2010This paper is a first step towards a conservation plan for the Kruger to Canyons Biosphere Reserve (K2C) on the South African Central Lowveld, quantifying the historical land-cover trends (1993-2006). During the analysis period, 36% of the ...Read more
Author:Effossou, KA; Cho, Moses ADate:Jun 2021There is a growing demand of land by multinational commercial agribusinesses to meet the increasing demand for food in sub-Saharan Africa (SSA) and the export market. Land tenure system is identified as one of the factors stymieing the growth ...Read more
Author:Goede, MF; Cho, Moses A; Chirwa, W; Geldenhuys, CJDate:Jan 2020Miombo Woodland is the major Land use/land cover with important ecological functions in Africa. In Malawi, government-management was designed to manage Woodlands. However, when illegal activities continued, Participatory Forest Management ...Read more
Author:Biggs, R; Scholes, RJDate:Sep 2002The area under cultivation in South Africa more than tripled during the twentieth century, while plantation area increased more than tenfold. These land covers now constitute 12% and 1.5%, respectively, of the country's surface area. This ...Read more
Author:Grobler, TL; Ackermann, ER; Olivier, JC; Van Zyl, AJ; Kleynhans, WDate:Jun 2012It is proposed that the time series extracted from moderate resolution imaging spectroradiometer satellite data be modeled as a simple harmonic oscillator with additive colored noise. The colored noise ismodeled with an Ornstein–Uhlenbeck ...Read more
Author:Bessinger, M; Lück-Vogel, Melanie; Skowno, A; Conrad, FDate:Nov 2022Coastlines worldwide are home to an increasing number of people and are subject to many pressures. This, combined with natural dynamics and hazards, often results in the degradation of coastal and marine ecosystems and infrastructure. Therefore, ...Read more
Author:Riley, DL; Strydom, I; Chikwamba, Rachel K; Panayides, Jenny-LeeDate:2019Africa is one of the world's fastest growing economies, with South Africa having the fifth highest worldwide pharmaceutical expenditure per capita. In recent years, several companies have considered regional pharmaceutical production but have ...Read more
Author:Kemper, J; Cowling, RM; Richardson, DM; Forsyth, GG; McKelly, DHDate:Apr 2000The South Coast Renosterveld has been fragmented extensively by agriculture. The extent of this fragmentation in terms of overall habitat loss, fragment sizes and fragment numbers has not been described previously, thereby limiting the ...Read more