Author:Masete, Mosimanegape S; Mutombo, K; Siyasiya, C; Stumpf, WDate:Jul 2015The effects of ageing temperature, time and cooling medium on the microstructure and hardness of a solution treated Ti6Al4V alloy were investigated. The furnace cooling after ageing for 0.5 hours gave a homogenous structure with higher hardness ...Read more
Author:Nicolaides, K; Nortman, LP; Tapson, JDate:Jan 2009Increasing operating depths of autonomous underwater vehicles have necessitated the development of underwater transducers that can operate at a greater depth. This paper investigates the possibility of incorporating rigid backing material ...Read more
Author:Nyembe, DW; Musee, N; Mamba, BB; Mamba, VDate:Aug 2013Algae (Pseudokirchnierella subcapitata) were exposed to pristine (p-) and oxidised (o-) forms of carbon nanospheres (CNSs) at concentrations of 0.1, 0.18, 0.32, 0.46 and 20 mg/L. At each concentration, the CNSs were sonicated for 1-h in three ...Read more
Author:Malika, Khodja; Hamida, F; Wahid, O; Rossouw, Pierre; Corderley, GaryDate:Jul 2017Composite materials are becoming more important in the construction of aerospace structures. Bonded joints fulfil a significant role in the development of new technologies, particularly in the aerospace industry where they give new possibilities ...Read more
Author:Mutanga, MB; Mudali, P; Chani, T; Mhlanga, Martin M; Adigun, MODate:Sep 2011Lack of manual management mechanisms in wireless ad-hoc networks means that automatic configuration of IP addresses and other related network parameters are very crucial. Many IP address autoconfiguration mechanisms have been proposed in ...Read more
Author:Mzila, P; Dube, EDate:Jul 2013As internet usage rapidly increases in both private and corporate sectors, the study of network intrusion detection is continuously becoming more relevant and has thus been evolving substantially in recent years. One of the most interesting ...Read more
Author:Maduray, K; Karsten, A; Odhav, B; Nyokong, TDate:Sep 2010This preliminary photodynamic therapy study investigated the effect of different diode laser powers (mW) for the activation of two photosensitizers (AlTSPc, aluminum tetrasulfonatedphthalocyanine and ZnTSPc, zinc tetrasulfonatedphthalocyanine) ...Read more
Author:Herselman, PL; Nel, Willem AJ; Cilliers, Jacques EDate:Feb 2006In this research, the critical implications of the phase response of a Digital Radio Frequency Memory (DRFM) based repeater system on the Doppler spectrum of a modern, coherently processing radar system (for example pulsed Doppler radar) are ...Read more
Author:Olakanmi, EO; Sepako, M; Morake, J; Kutua, S; Hoosain, Shaik E; Pityana, Sisa LDate:Aug 2018The engagement of additive manufacturing (AM) technology in developing intermetallic coatings involves additional heat treatment with a view to obtaining desirable microstructure and mechanical properties. This eventually increases the lead ...Read more
Author:Barkhuysen, FA; Chapple, Stephen A; Blunt, J; Lemon, HDate:Sep 2005The main disadvantage of coarse wool and mohair is their harshness, making them unacceptable to the consumer. The best way to improve the softness of coarse fibres is by a chemical treatment. In this regard, a variety of options are available ...Read more
Author:Stark, T; Chakauya, E; Kabamba, A; Morris, L; Rybicki, E; Chikwamba, Rachel KDate:Aug 2010Sub-Saharan Africa remains the region most heavily affected by HIV, and the majority of new infections from heterosexual contact are in women. Griffithsin (GRFT), a lectin isolated from the red algae Griffithsia, has shown extreme potency ...Read more
Author:Schmitz, P; Eksteen, SDate:Jul 2014Worldwide geospatial datasets have become more readily available to non-expert users via the Internet and have changed the context in which spatial data is used. The quality of the available datasets can only be assessed if the corresponding ...Read more
Author:Chauke, Levy; Curle, Ulyate A; Govender, Gonasagren SDate:Oct 2017Traditionally aluminium casting alloy 513 is not heat treated after permanent mould casting. Al-Mg alloys are generally not heat treatable but the higher Zn content in this alloy could render it heat treatable. It could be expected that in ...Read more
Author:Kgoahla, Reneilwe M; Lekoadi, Paul M; Masina, Bathusile NDate:Nov 2023This study presented the investigation of the influence of post heat treatment temperature on the microstructure and hardness of TiC/Ti6Al4V composite manufactured with laser metal deposition. Heat treatment was performed to improve the ...Read more
Author:Roro, Kittessa T; Tile, N; Yalisi, B; Forbes, ADate:May 2011For efficient photo-thermal conversion of solar energy a spectrally selective solar absorber surfaces are widely used. An ideal selective surface should have a high absorptance (low reflectance) in the solar wavelength range (0.3 to 2.5 µm) ...Read more
Author:Mokoduwe, SM; Van Rooyen, IJ; Neethling, JH; Janse van Vuuren, A; Olivier, EJDate:Oct 2010Recent research and development activities of the PBMR Fuel Characterization and Optimization Programme focused on the high temperature characteristics of the PBMR fuel and more specifically on the SiC layer. PBMR fuel consists of Tri-Isotropic ...Read more
Author:Moilwa, N; Wilkinson, MDate:Nov 2006Diarrhoeal disease is a major concern to the South Africa government. Understanding the relationship between the lack of water and sanitation and diarrhoeal disease, the government has developed a national initiative to provide poor and rural ...Read more
Author:Mokgalaka, MN; Pityana, Sisa L; Popoola, API; Meacock, CDate:Oct 2012Titanium is an attractive choice for many components in the aerospace, automotive and biomedical industry. It is frequently chosen as one of the preferred alloys for parts and components due to the excellent combination of specific mechanical ...Read more
Author:Mahamood, RM; Akinlabi, ET; Shukla, M; Pityana, Sisa LDate:Oct 2012This paper reports the effect of laser power on the optimum utilization of the powder material, the layer height and the width of the laser Metal Deposited Ti6Al4V. The Ti6Al4V powder was deposited on Ti6Al4V substrate using an Nd: YAG laser ...Read more