Author:Loveday, Philip W; Rogers, CADate:29 Oct 1998The free vibration of thin cylinders with elastic boundary conditions was analysed by application of the exact solution of the Flugge shell theory equations of motion. The elastic boundaries were represented by distributed linear springs. By ...Read more
Author:Linke, S; Turak, E; Nel, JDate:Jan 2011The authors review recent advances in systematic conservation planning in fresh waters. Most modern systematic planning approaches are based on the CARE principles: comprehensiveness, adequacy, representativeness and efficiency. Efficiency ...Read more
Author:Kesavan Pillai, Sreejarani; Gheevarghese, O; Tleane, IVDate:2012The present study has undertaken the Friedel-Crafts benzylation of aromatics over the V2O5/ZrO2 catalysts systems. Catalysts with different V2O5 content (0-15wt %) was prepared by wet impregnation method and characterized by XRD, BET surface ...Read more
Author:Swartbooi, Ashton; Kapanji-Kakoma, KK; Musyoka, Nicholas MDate:Sep 2022Biogas is a renewable feedstock that can be used to produce hydrogen through the decomposition of biomethane. However, the economics of the process are not well studied and understood, especially in cases where solid carbons are also produced, ...Read more
Author:Liu, Y; Ma, X; Shu, L; Hancke, GP; Abu-Mahfouz, Adnan MIDate:Jun 2020The three previous industrial revolutions profoundly transformed agriculture industry from indigenous farming to mechanized farming and recent precision agriculture. Industrial farming paradigm greatly improves productivity, but a number of ...Read more
Author:Britz, K; Varzinczak, IDate:Mar 2018We investigate an aspect of defeasibility that has somewhat been overlooked by the nonmonotonic reasoning community, namely that of defeasible modes of reasoning. These aim to formalise defeasibility of the traditional notion of necessity in ...Read more
Author:Nuutinen, J; Sutinen, E; Botha, Adèle; Kommers, PDate:Sep 2010The rapid development of computer-supported collaborative environments has highlighted the need for collaborative knowledge construction devices. Because most available mindtools do not promote collaboration, there is a need for social mindtools ...Read more
Author:Mwakikunga, Bonex W; Maaza, M; Hillie, KT; Arendse, CJ; Malwela, T; Sideras-Haddadf, EDate:Jul 2012Raman spectroscopy of the VOx nano-ribbons is discussed in the framework of the Richter (1981) equation for optical phononconfinement (a) as modified for thin films by Fauchet and Campbell (1986), (b) as presented by Kim and co-workers for ...Read more
Author:Patterton, Louise H; Bothma, TJD; Van Deventer, MJDate:Dec 2018Research data management (RDM) and its accompanying services and infrastructures are predominantly still in a state of infancy in many African countries and little is known about the RDM habits of the researchers from these areas. Our research ...Read more
Author:Holloway, Jennifer P; Ittmann, HW; Dudeni-Tlhone, Nontembeko; Schmitz, PDate:2018Elections draw enormous interest worldwide, especially if these involve major countries, and there is much speculation in the media as to possible outcomes from these elections. In many of these recent elections, such as the UK and USA, ...Read more
Author:Roux, DJ; Murray, K; Nel, JL; Hill, Liesl; Roux, H; Driver, ADate:2011The responsibility for managing and conserving freshwater ecosystems is typically shared by multiple organizations with sometimes onflicting policy mandates. However, scorecard-based approaches for measuring management effectiveness in natural ...Read more
Author:Dudley, Angela L; Forbes, ADate:Apr 2012In this work we use a phase-only spatial light modulator (SLM) to mimic a ring-slit aperture, containing multiple azimuthally varying phases at different radial positions. The optical Fourier transform of such an aperture is currently known ...Read more
Author:Van Rensburg, J; Veldsman, AW; Jenkins, MDate:2008It is easy to find in the research literature examples of ICT4Dev initiatives that have failed. Rather than continue with a focus on technologies, our journey has led us towards the establishment of a network of community based, ICT-enabled, ...Read more
Author:Katumba, G; Mothibinyane, TR; Mwakikunga, Bonex WDate:Nov 2008Coatings of carbon nanoparticles dispersed in SiO2, ZnO and NiO matrices on aluminium substrates have been fabricated by a sol–gel technique. Spectrophotometry was used to determine the solar absorptance and the thermal emittance of the ...Read more
Author:Mokoena, N; Mathiba, K; Tsekoa, Tsepo L; Steenkamp, P; Rashamuse, KDate:Aug 2013Family VIII esterases represent a poorly characterised esterase family, with high sequence identity to class C b-lactamases, peptidases and penicillin binding protein. In this study we report on the metagenomic screening and biochemical ...Read more
Author:Veramoothea, P; Breytenbach, Andre; Baloyi, EDate:Aug 2015The built environment consists of various land uses and activities connected by a road network. The efficiency and effectiveness of the road network directly impacts economic growth and societal movement. This study involved the functional ...Read more
Author:Smith, Suzanne; Oberholzer, Adelaide E; Land, Kevin J; Korvink, JG; Mager, DDate:May 2018This work explores the practical functionality of ultra-high frequency (UHF) radio frequency identification (RFID) tags screen printed onto various low-cost, flexible substrates. The need for integrated and automated low-cost point-of-care ...Read more
Author:Lalloo, Rajesh; Maharajh, Dheepak M; Görgens, J; Gardiner, NSDate:May 2008Modern aquaculture utilises intensive reticulated systems resulting in waste accumulation and proliferation of disease. Conventional chemical treatments cause resistance in pathogens and negative environmental impact. The potential of a ...Read more