Author:Pereira, MFVT; Williams, M; Du Preez, WBDate:Jul 2012A number of laser additive manufacturing (LAM) technologies can produce fully-dense metal components that potentially offer opportunities to apply the technology in die or mould making (known as rapid tooling). From these LAM technologies, ...Read more
Author:Tlotleng, Monnamme; Akinlabi, ET; Shukla, M; Pityana, Sisa LDate:Feb 2014Laser assisted cold spraying (LACS) process is a hybrid technique that uses laser and cold spray to deposit solid powders on metal substrates. For bonding to occur, the particle velocities must be supersonic which are achieved by entraining ...Read more
Author:Denneman, EDate:Jul 2007In this paper, locally developed algorithms for asphalt pavement temperature prediction are validated against new field data. The algorithms provide accepable estimates of the actual pavement temperatures at the monitored sites. The algorithms ...Read more
Author:Ndhundhuma, IMDate:Jan 2010Lasers have emerged as powerful tools for tissue engineering. To examine cellular growth, and cell to cell interactions, in vitro skin models have been developed combining two major cell types of skin, keratinocytes and fibroblasts. The main ...Read more
Author:Masindi, Vhahangwele; Gitari, MW; Tutu, H; De Beer, MarindaDate:Oct 2014This study evaluated the feasibility of integrating amorphous magnesite and bentonite clay (composite) as an alternative technology for removing arsenic from industrial effluents. The removal of arsenic from industrial effluents by using ...Read more
Author:Xing, B; Tlale, NS; Bright, GDate:Dec 2010Manufacturing companies are faced with the challenge of unpredictable, high frequency market changes in both local and international markets. Two types of conventional manufacturing system: dedicated manufacturing system (DMS) and flexible ...Read more
Author:Xing, B; Tlale, NS; Bright, GDate:Dec 2008Manufacturing companies are faced with the challenge of unpredictable, high frequency market changes in both local and international markets. Two types of conventional manufacturing system: dedicated manufacturing system (DMS) and flexible ...Read more
Author:Ondiaka, M; Musee, N; Aldrich, CDate:Apr 2012Globally, engineered nanomaterials (ENMs) are increasingly being used in nanoproducts to improve their performance. The multi-stage lifecycle of ENMs increases their potential risk profiles to different environmental systems, for example, due ...Read more
Author:Rogers, DEC; Masekoameng, E; Oelofse, Suzanna HHDate:Oct 2008This paper gives background on the Best Practicable Environmental Option (BPEO) which is a principle in the National Environmental Management Act (1998) and is included now in Section 48.c of the NEMWaste Bill, [Version Sept 2007] (2007), as ...Read more
Author:Madlala, Tebogo E; Kanyerere, T; Oberholster, Paul J; Xu, YDate:Jun 2018Globally, the dependence of river systems to delayed discharge of subsurface water to augment flows during dry seasons is well documented. Discharge of fresh subsurface water can dilute concentrated river flow quality during reduced flow. ...Read more
Author:Olivier, MariusDate:Sep 2016It is well known that reacting explosives emit light of varying intensity across the light spectrum. Measurement of this emitted light could have many applications, i.a. the creation of a database of characteristic light signatures at specific ...Read more
Author:Van Wyk, Llewellyn VDate:May 2007The paper reviews the potential application of NFC in construction, identifies the prerequisite mechanical properties for equivalency, and prepares the targeted values for mechanical properties of NFC in construction. The mechanical properties ...Read more
Author:Zbonak, A; Bush, TDate:Sep 2006An investigation was conducted to test the feasibility of near infrared spectroscopy (NIR) as a tool for predicting the microfibril angle (MFA) of solid wood samples of Pinus patula. Thirty 14 year-old trees were selected from three compartments ...Read more
Author:Veerasamy, Namosha; Eloff, JHPDate:Jul 2008Network warfare is an emerging concept that focuses on the network and computer based forms through which information is attacked and defended. Various computer and network security concepts thus play a role in network warfare. Due the intricacy ...Read more
Author:Jahajeeah, NDate:2006Numerical modelling has successfully been used as an efficient tool to convert a gravity cast brake calliper to a thixocasting process. The thixo-modue of Procast has been used for the modelling process to obtain optimum processing parameters. ...Read more
Author:Van Den Broek, GJDate:Jul 1984The effect of aircraft wind modelling on the external store loads is investigated by computing that effect for the external flow field generated by the wing. The application of the panelling /boundary condition method to the perturbation flow ...Read more
Author:Mapako, MDate:Apr 2009Projects and programmes to disseminate energy technologies in Africa have been undertaken for decades with little success. These have included initiatives to promote and disseminate family and community biogas digesters, improved woodstoves, ...Read more
Author:Mapako, MCDate:Apr 2009Projects and programmes to disseminate energy technologies in Africa have been undertaken for decades with little success. These have included initiatives to promote and disseminate family and community biogas digesters, improved woodstoves, ...Read more
Author:Naidoo, Mogesh; Sibiya, Bhekizizwe A; Bird, T; Nekhwalivhe, M; Netshandama, J; Mahlatji, MDate:Oct 2017Municipalities are required to develop an Air Quality Management Plan (AQMP) in order to work towards mitigating the negative impacts of air quality on human health and the environment. The 2016 AQMP for the City of Johannesburg (CoJ) ...Read more
Author:de Wet, P; du Plessis, JP; Woudberg, SDate:May 2010In many of the continuum processes typically found in chemical engineering, the functional dependency of the dependent variable is only known for large and small values of the independent variable. Exact solutions in the transitional regime ...Read more