Author:Paige-Green, P; Leyland, R; Maharaj, ADate:Aug 2010The development of stiffness of stabilized materials with time is critical to the construction process, particularly in the case of recycling, where traffic is often required to return to the recycled road soon after construction. However, ...Read more
Author:Theron, BertusDate:Apr 2013The purpose of the workshop was for participants to interactively discuss (with regard to optical imaging or optical imaging systems): Local end-user needs; What those needs imply for associated new & existing laboratory testing & measurement ...Read more
Author:Paige-Green, P; Hongve, J; Sampson, L; Cassiem, IDate:Sep 2004The primary objective of the study discussed in this paper was to assess the different alternatives to the provision and maintenance of a good gravel wearing course, in financial and economic terms as well as suitability for labour-based ...Read more
Author:Dlamini, N; Mapiravana, JosephDate:Sep 2011For this workshop, members of the Regional research alliance (RRA) and delegates from the construction industry were invited to present ideas and contribute towards the implementation of Ultrathin Concrete road pavements. Dr. Joe Mapiravana ...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:Trichili, A; Mhlanga, T; Naidoo, Darryl; Dudely, A; Zghal, M; Forbes, ADate:17 Aug 2014We analyze the effect of atmospheric turbulence on the propagation of multiplexed Laguerre Gaussian modes. We present a method to multiplex Laguerre Gaussian modes using digital holograms and decompose the resulting field after encountering ...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:Audouin, Michelle ADate:Jan 2007Unsustainable agricultural practices have had a role to play in the degradation of land on which agriculture depends. South Africa has an international obligation to develop a National Action Programme (NAP), the purpose of which is to identify ...Read more
Author:Von Maltitz, Graham P; Van der Merwe, Martina RDate:Apr 2017The Southern African region, from a purely biophysical perspective, has huge potential for biofuel production, especially in Mozambique and Zambia. Although many of the soils are sandy and acidic, with careful management and correct fertilization, ...Read more
Author:Napier, MarkDate:Oct 2013Most people living in cities in Africa live outside of the legal system, without clear rights to the land they occupy. These pieces of land make up the so-called slums which surround and permeate most growing cities, and which are home to ...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:Ramoelo, Abel; Munyati, C; Lück-Vogel, Melanie; Le Maitre, David C; Van Aardt, JDate:Sep 2007Land degradation is of great concern in South Africa particularly in the Inkomati catchment. Here a mosaic of different land use types such as plantation agriculture, subsistence farming, irrigated commercial farming, rural and urban settlements, ...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:Tizora, P; Le Roux, Alize; Mans, Gerbrand G; Cooper, Antony KDate:Jul 2016The Western Cape Province is currently faced with population growth, declining household sizes, increasing household numbers, high levels of migration, urbanization and escalating development pressures. These factors have consequently triggered ...Read more
Author:Malunga, MM; Cho, Moses A; Chirwa, PW; Yerokun, OADate:Aug 2021The pattern of Miombo woodland conversion to other land uses and the attendant impacts on vital Miombo ecosystems such as dambos is not well understood. Using the Copperbelt province of Zambia as a case study, we assessed the spatio-temporal ...Read more