Browsing Faculty of Engineering by Title
Now showing items 205-224 of 1122
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Copolymerization of ethyl acrylate onto guar gum for the adsorption of Mg(II) and Ca(II) ions
(Taylor & Francis, 2016)In the present study, the copolymerization of ethyl acrylate and guar gum was induced by microwave irradiation in the presence of catalytic amount of the initiator potassium persulfate (KPS). The maximum percentage conversion ... -
Correlating hardware fault detection information from distributed control systems to isolate and diagnose a fault in pressurised water reactors
(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 ... -
Correlation between rapid learnability and user preference in IVR systems for developing regions
(iIST-Africa, 2013)Access to information and communication is one of the most important needs in any population group. It is generally challenging for people in the developing world to access information because the tools and the technologies ... -
Corrosion testing of steel for production and injection well applications in a UCG process
(International Pittsburgh Coal Conference, 2016) -
CREAK descriptor evaluation for visual odometry
(IEEE, 2019)Each year, latest state of the art technologies and algorithms arise that claim and prove to-shine their predecessors. One such algorithm is the Colour-based Retina Key-point (CREAK) descriptor, which is based on the FAST ... -
Cross-bandwidth adaptation for ASR systems
(Pattern recognition association of South Africa (PRASA), 2013)Mismatches between application and training data greatly reduce the performance of automatic speech recognition (ASR) systems. However, collecting suitable amounts of in-domain and application-specific data for training ... -
A current analysis and correction system for vibration forces on the rotor of a rotating active magnetic bearing system
(SAIEE, 2007)In this paper, an on-line detection, correction and identification system for vibration forces on the rotor of a rotating active magnetic bearing is proposed. The on-line detection system performs current analysis by ... -
Current density distribution of electrolyzer flow fields: in situ current mapping and neutron radiography
(ACS, 2020)A polymer electrolyte membrane water electrolyzer plays an important role in the development of renewable energy storage systems due to its high current density capability and quick response to intermittent input power ... -
Current status, research trends, and challenges in water electrolysis science and technology
(Elsevier, 2020)Water electrolysis has various industrial applications. Over the past years, interest in water electrolysis technologies has increased largely due to the renaissance of the nuclear-hydrogen energy concept and also the ... -
Damring formation during rotary kiln chromite pre-reduction: effects of pulverized carbonaceous fuel selection and partial pellet melting
(Springer, 2018)Electricity consumption is the largest cost contributing factor in the production of ferrochrome. Currently the pelletized chromite pre-reduction process (solid-state reduction of chromite) is the process option with the ... -
Data acquisition system for capturing dynamic transients in a control valve
(IEEE, 2004)This work presents the development of a data acquisition (DAQ) system to be used in conjunction with fuzzy modelling to derive a dynamic mathematical model of a control valve. Characterising the behaviour of a control valve ... -
Data logger and companion application for time-of-use electricity
(IEEE, 2018)Electricity generation is becoming more expensive, hence Time-of-Use (ToU) electricity tariff structures, such as Eskom Megaflex are implemented. The companion application is an integrated solution designed for use with ... -
Data mining: a technique used to extract information from tan delta measurements on medium voltage induction motors
(IEEE, 2007)The study attempted to understand the condition of the insulation system and to classify the data according to its condition. Data mining processes were used to gain insight into the data and the condition of the insulation ... -
Dataset on the carbon dioxide, methane and nitrogen high-pressure sorption properties of South African bituminous coals
(Elsevier, 2019)The dataset presented in this article supplements the result and information published in the report “The carbon dioxide, methane and nitrogen high-pressure sorption properties of South African bituminous coals” (Okolo et ... -
DC power quality emulator
(IEEE, 2020)Currently, no dc power quality standards exist. The lack of dc power quality (PQ) standards can be addressed by, amongst others, evaluating the impact of PQ deviations on consumer end equipment. A voltage disturbance ... -
Dc-bus voltage balancing controllers for split dc-link four-wire inverters and their impact on the quality of the injected currents
(IET, 2017)The increasing share of single-phase distributed generation units in low-voltage grids causes voltage unbalance problems and overvoltages. Therefore, the need for power quality improving control strategies of grid-connected ... -
Decongestion of the distribution grid via optimised location of PV-battery systems
(IET, 2017)In order to achieve the energy targets for 2020, further integration of renewable energy sources is required. Hence, there was a need to investigate possible solutions to achieve a reliable network without loss of production. ... -
Degradation mechanisms of MEA characteristics during water electrolysis in solid polymer electrolyte cells
(Springer, 2017)The processes contributing to degradation of characteristics of membrane-electrode assemblies (MEA) of water electrolyzers with solid polymer electrolyte (SPE) are considered. Particularly, the life tests of an electrolysis ... -
Density functional theory calculation of Ti3C2 MXene monolayer as catalytic support for platinum towards the dehydrogenation of methylcyclohexane
(Elsevier, 2020)The need for sustainable energy systems and reducing greenhouse gas emissions are key drivers in the development of liquid hydrogen organic carriers (LOHCs). Density functional theory calculations were performed on the ... -
Density functional theory molecular modelling and experimental particle kinetics for CO2-char gasification
(Elsevier, 2015)Experimental measurements and DFT atomistic modelling were conducted to elucidate the mechanisms for gasification chemistry of char with CO2 gas. The molecular models used were based on experimental representations of coal ...