Browsing Faculty of Engineering by Title
Now showing items 34-53 of 701
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Aqueous solubility of Cr(VI) compounds in ferrochrome bag filter dust and the implications thereof
(WRC, 2017)The production of ferrochrome (FeCr) is a reducing process. However, it is impossible to completely exclude oxygen from all of the high-temperature production process steps, which may lead to unintentional formation of ... -
Assessing the catalytic effect of coal ash constituents on the CO2 gasification rate of high ash, South African coal
(Elsevier Science, 2011)The catalytic effect of inorganic species, within the ash, on the CO2 gasification of three South African coals containing similar carbon-structural properties (elemental, structural and petrographical properties) was ... -
Assessment and reduction of proliferation risk of reactor-gradeplutonium regarding construction of ‘fizzle bombs’ by terrorists
(Elsevier, 2014)The approximately 23.7 wt% 240Pu in reactor-grade plutonium denatures the 239Pu to the extent that it cannot fuel high yield nuclear weapons. 240Pu has a high spontaneous fission rate, which increases the spontaneous neutron ... -
Attenuation effect with non-linear loads for small stand-alone grids
(IEEE, 2016)This paper presents the effect of non-linear loads on the overall voltage quality in small powered stand-alone (islanded) systems. The iterative effect between current and voltage distortion is related to the source's ... -
Automatic alignment of audiobooks in Afrikaans
(Pattern recognition association of South Africa (PRASA), 2012)This paper reports on the automatic alignment of audiobooks in Afrikaans. An existing Afrikaans pronunciation dictionary and corpus of Afrikaans speech data are used to generate baseline acoustic models. The baseline system ... -
Automatic speech recognition for under-resourced languages: A survey
(Elsevier, 2014)Speech processing for under-resourced languages is an active field of research, which has experienced significant progress during the past decade. We propose, in this paper, a survey that focuses on automatic speech ... -
Behaviour of calcium-containing minerals in the mechanism towards in situ CO2 capture during gasification
(Elsevier Science, 2008) -
Behaviour of selected major elements during fixed-bed gasification of South African bituminous coal
(Elsevier, 2012)The Sasol–Lurgi Fixed Bed Dry Bottom gasifier (S–L FBDB) treats a feed coal containing c.a. 30% ash forming minerals, which means that there are complex mineralogical processes occurring simultaneously with each other, ... -
Benchmarking an expert fault detection and diagnostic system on the Three Mile Island accident event sequence
(ELSEVIER, 2013)Early fault identification systems enable detecting and diagnosing early onset faults or fault causes which allow maintenance planning on the equipment showing signs of deterioration or failure. This includes valve and ... -
Benders decomposition of the passive optical network design problem
(Elsevier, 2016)Similar to the connected facility location problem, the passive optical network design problem requires the search for a subset of deployed distribution points (splitters) as well as an allocation of demand points (optical ... -
Bilateral G2P accuracy: measuring the effect of variants
(Pattern Recognition Association of South Africa and Mechatronics International Conference, 2017)Incorporating pronunciation variants in a dictionary is controversial, as this can be either advantageous or detrimental for a speech recognition system. Grapheme-tophoneme (G2P) accuracy can help guide this decision, ... -
Biofuel production from spent coffee grounds via lipase catalysis
(Taylor & Francis, 2018)Lipases namely Mucor miehei, Pseudomonas cepacia, Rhizopus delemar, Geotrichum candidum, Candida rugosa, Porcine pancreas-II, Pseudomonas fluorescence, and Candida antarctica lipase-B (Novozyme-435) were employed for ... -
Block RAM implementation of a reconfigurable real-time PID controller
(IEEE, 2012)Despite the numerous advantages reconfigurable computing adds to a system, it is only advantageous if the execution time exceeds the configuration time. As a result of the long configuration time, reconfiguration is only ... -
Block RAM-based architecture for real-time reconfiguration using Xilinx® FPGAs
(South African Institute of Computer Scientists and Information Technologists, 2015)Despite the advantages dynamic reconfiguration adds to a system, it only improves system performance if the execution time exceeds the configuration time. As a result, dynamic reconfiguration is only capable of improving ... -
The carbon dioxide gasification characteristics of biomass char samples and their effect on coal gasification reactivity during co-gasification
(Elsevier, 2018)The carbon dioxide gasification characteristics of three biomass char samples and bituminous coal char were investigated in a thermogravimetric analyser in the temperature range of 850–950 °C. Char SB exhibited higher ... -
Carbon particle type characterization of the carbon behaviour impacting on a commercial-scale Sasol-Lurgi FBDB gasifier
(Elsevier Science Ltd, 2009) -
Cascade disruption of generation: a special focus on African grid volnurebilities
(IEEE, 2011)Large scale network disruption often lies at the heart of regional blackouts, and often disrupts entire communities in terms of their normal activities and well being. Disruptions caused by cascading failure of generating ... -
Cascade disruption of generation: the hidden gift of failure
(IEEE, 2012)Large scale network disruption often lies at the heart of regional blackouts, and often disrupts entire communities in terms of their normal activities and well being. Recognizing the threat posed by such disturbances, ... -
The case for nuclear electricity in South Africa – a political alignment framework
(Wiley, 2014)Energy is essential for economic development of South Africa. All areas for development and economic growth i.e. reducing poverty and improving quality of life require affordable access to reliable energy services. When ...
