Author:Scriba, Manfred R; Britton, DT; Arendse, C; van Staden, MJ; Härting, MDate:Apr 2009The effect of pressure on the structure and composition of silicon nanoparticles synthesized by hot wire thermal catalytic pyrolysis (HW-TCP) of pure silane has been investigated. Light brown powders were produced at silane pressures of 10 ...Read more
Author:Mhindu, RL; Wuta, M; Ngorima, EDate:Aug 2013The composting process of peri-urban household wastes, changes that occur during composting, and the properties of the composting products that are of importance for use as soil amendments were studied. Seven different composting mixtures ...Read more
Author:Kupfer, S; Santamaria-Aguilar, S; Pieterse, Amy; Lück-Vogel, Melanie; Vafeidis, ATDate:May 2022Recent studies on compound flooding have considered the interaction of storm-tide and fluvial or pluvial flood drivers, whereas the contribution of waves to compound flooding so far has been neglected. In this study, we investigate compound ...Read more
Author:Mntuwaphi, ND; Isong, B; Gasela, N; Abu-Mahfouz, Adnan MIDate:Nov 2020Internet of things (IoT) is an innovative technology that has gained significant research attention in recent years and is still gaining momentum. This technology permits communication between humans and objects or objects with objects to ...Read more
Author:Ntshabele, K; Isong, B; Gasela, N; Abu-Mahfouz, Adnan MIDate:Sep 2022Low-Power Wide-Area Network (LPWAN) is a wireless WAN technology that connects low-powered and low-bandwidth devices with low bit rates atop Long Ranges (LoRa). It is characterized by improved scalability, wide area coverage, and low power ...Read more
Author:Nemufulwi, Murendeni I; Swart, HC; Mhlongo, Gugu HDate:Jul 2021In this work, nickel (Ni) substituted zinc ferrite nanoparticles (NPs) with formula NixZn1- xFe2O4 (x = 0, 0.1, 0.3, 0.4) were synthesized using a microwave-assisted hydrothermal method. We further evaluated the effects of Ni substitution on ...Read more
Author:Zandamela, Frank; Ratshidaho, Thikhathali T; Kunene, Dumisani C; Nana, Muhammad ADate:Sep 2021In literature, several approaches have been used to evaluate the performance of deblurring algorithms on synthetically generated image datasets. The used image datasets only consist of motion-blurred images and do not consider depth variation. ...Read more
Author:Isong, B; Molose, RRS; Abu-Mahfouz, Adnan MI; Dladlu, NDate:Sep 2020Software-Defined Networking (SDN) is a network paradigm introduced to overcome the inherent challenges of traditional networks. Its architecture is either deployed with a single controller or multiple controllers. While the first is not ...Read more
Author:Tuling, S; Vallabh, Bhavya; Morelli, Mauro FDate:Apr 2015A numerical study of the flow topologies over the 60° delta wing of the AGARD-B model at Mach 0·80 has revealed that vortex bursting occurs between 13°-15° angle-of-attack, while vortex separation occurs above 18°. These aerodynamic features ...Read more
Author:Mokoena, Refiloe; Mgangira, Martin BDate:Jul 2017Concrete block paving for roads has been proposed as part of a concept on sustainable infrastructure. In an effort to respond to sustainability and environmental awareness, the use of industrial by-products has been employed in the mix design ...Read more
Author:Snyman, IM; Mostert, FJDate:Sep 2014This paper presents the calculation of the terminal ballistic signature of the 35 mm HEI from two viewpoints. The first viewpoint calculates fragment velocities and projection angles by the axial symmetric hydro code ANSYS AUTODYN. The second ...Read more
Author:Sharma, Shikar; Berman, Robert; Kuduntwane, PolokoDate:Apr 2015To support the South African National Defence Force with their vehicle mobility needs, the CSIR has begun characterising tyres by using a medium, trailer-type, tyre test rig. Two different Pacejka tyre models were generated using two independent ...Read more
Author:Naidoo, Kavendra; Skews, BWDate:Jul 2007This paper reports the development of an experimental facility for the investigation of dynamic, two-dimensional shock reflection phenomena generated by a rapidly pitching wedge in proximity of an ideal wall. CFD simulations of the rapidly ...Read more
Author:Karunarathna, B; Jayakody, RS; Karunanayake, L; Govender, Krishna KDate:Jan 2021Segmented polyurethanes show extraordinary physicochemical properties, mainly owing to the nature and the chemistry of the hard segment domains. There are yet many inexplicable physiochemical properties of MDI-BDO–based hard polyurethane ...Read more
Author:Fatoba, OS; Farotade, GA; Popoola, API; Pityana, Sisa LDate:Apr 2016Laser alloying is a material processing method which utilizes the high power density available from defocused laser beam to melt both metal coatings and a part of the underlying substrate. Since melting occur solitary at the surface, large ...Read more
Author:Mafusire, C; Forbes, A; Snedden, Glen CDate:Aug 2010When a metal horizontal pipe is heated and spun along its axis, a graded refractive index distribution is generated which is can be used as a lens, thus its name, the spinning pipe gas lens (SPGL). Previous experimental results of its performance ...Read more
Author:Patanaik, A; Anandjiwala, RDate:Jul 2011This chapter deals with the application of computational fluid dynamics (CFD) modeling in reducing yarn hairiness during the ring spinning process and thereby “engineering” yarn with desired properties. Hairiness significantly affects the ...Read more
Author:Makatsa, TJ; Baloyi, Siwela J; Masuku, CMDate:Jul 2021Catalytic wet-air oxidation is an attractive solution to treating refractory wastewater. The process has been demonstrated at laboratory scale over a low-cost pillared clay catalyst in a trickle-bed reactor. However, complex interaction of ...Read more