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Research Articles: Faculty of Engineering and Information Technology: Recent submissions

Now showing items 101-120 of 301

Bioactive Phytochemicals: Bioactivity, Sources, Preparations, and/or Modifications via Silver Tetrafluoroborate Mediation

Achilonu, Matthew C.; Umesiobi, Dennis O. (Journal of Chemistry, 2015)

This review provides an overview of the biological activities, natural occurrences, and the silver tetrafluoroborate- (AgBF4-) mediated synthesis of proanthocyanidins, glycosides, N-heterocyclic alkaloid analogues (of ...
Exploring the importance of emotional quotient in construction : perspectives from health and safety professionals in South Africa

Smallwood, John; Emuze, Fidelis; Bloomberg, Charissa (Journal of Construction Project Management and Innovation, 2014)

Self-regard, emotional self-awareness, flexibility, problem solving, and stress tolerance, inter alia, constitute attributes that affect how well activities are carried out by individuals. Thus, construction activities ...
A qualitative review of the health and safety leadership roles of managers in South African construction

Okorie, Victor; EMUZE, Fidelis; SMALLWOOD, John; VAN WYK, Jacobus (Journal of Construction Project Management and Innovation, 2014)

Top management in an enterprise has decisive roles to play in terms of health and safety (H&S) management. A key role in this context pertains to leadership. The study that is reported upon assessed the H&S leadership ...
The influence of clients’ leadership in relation to construction health and safety in South Africa

Okorie, Victor; Emuze, Fidelis; Smallwood, John; van Wyk, Jacobus (University of the Free State: Acta Structilia, 2014)

The South African Construction Regulations realise the contributions by each member of a project team to health and safety (H&S) improvement. These Regulations amplify the roles and contributions of clients to project ...
Access–usage qualities of information technology in higher education setting

Manduna, Watson Moffat (Journal of Psychology in Africa, 2014)

This study examined access and usage qualities as perceived by students of Information Communication Technologies (ICT) at a South African technology university. Participants were 40 randomly selected first-year (n = 20) ...
The impact of mining induced urbanization : a case study of Kathu in South Africa

Emuze, Fidelis; Hauptfleisch, Cornel (Journal of Construction Project Management and Innovation, 2014)

Rapidity in urbanization has continued in the past decade despite the realisation that resources are finite. Commerce, migration, employment, industry configuration and population increases are factors that contribute ...
SMART CITY PERSPECTIVES OF BLOEMFONTEIN, SOUTH AFRICA

DAS, Dillip; EMUZE, Fidelis (Journal of Construction Project Management and Innovation, 2014)

To handle rapid urbanization, there is need to find new ways to manage complexity, increase efficiency, reduce expenses, and improve quality of life. The new ways are rooted in the concept of ‘smart city’. The concept ...
Qualification of Ti6Al4V ELI Alloy Produced by Laser Powder Bed Fusion for Biomedical Applications

Yadroitsev, I.; Krakhmalev, P.; Yadroitsava, I.; Du Plessis, A. (The Journal of The Minerals, Metals & Materials Society (TMS), 2017)

Ti6Al4V ELI samples were manufactured by Laser Powder Bed Fusion (LPBF) in vertical and horizontal directions and subjected to various heat treatments. Detailed analyses of porosity, microstructure, residual stress, tensile ...
utilising online gas analyser to detect gassing transformation in a distribution substation

Vermaak, H.J.; Motau, T. (2017)

The stability of any network is very much depending on the performance of the power transformers.
ITERATIVE SLICING AS SOLUTION TO THE MODEL PREDIC- TIVE CONTROL PROBLEM OF A THREE-LEVEL INVERTER

Raath, J.; Mouton, H. du Toit; Geyer, T. (IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE), 2017)

This paper considers a model predictive controller with reference tracking that manipulates the integer switch positions of a power converter. It can be shown that the optimal switch position can be computed in a new ...
Are power engineering students really using their formative assessments to achieve academic success? A case study

Swart, A.J.; Hertzog, P.E. (2017)

Industrial Projects IV is a compulsory capstone module for students enrolled for the Baccalaureus Technologiae (BTech) in Electrical Engineering (Power) in South Africa. Power engineering students need to submit six ...
COOLING PHOTOVOLTAIC SYSTEMS: A SURVEY OF AVAILABLE TECHNOLOGIES

Siecker, J.; Kusakana, K. (2017)

Cooling is a key operation factor to take into consideration to achieve higher efficiency when operating solar photovoltaic systems. Proper cooling can improve the electrical efficiency, and the heat removed by the cooling ...
Software for molecular docking: a review

Pagadala, Nataraj S.; Syed, Khajamohiddin; Tuszynski, Jack (Biophysical Reviews, 2017)

Molecular docking methodology explores the behavior of small molecules in the binding site of a target protein. As more protein structures are determined experimentally using X-ray crystallography or nuclear magnetic ...
In silico strategies on prion pathogenic conversion and inhibition from PrPC -PrPSc

Pagadala, Nataraj S.; Syed, Khajamohiddin; Bhat, Rakesh (Taylor & Francis: Expert Opinion on Drug Discovery, 2017)

To date, various therapeutic strategies identified numerous anti-prion compounds and antibodies that stabilize PrPC, block the conversion of PrPC-PrPSc and increased effect on PrPSc clearance. However, no suitable drug has ...
The compound (3-{5-[(2,5-dimethoxyphenyl)amino]-1,3,4-thiadiazolidin-2-yl}-5,8-methoxy-2H-chromen-2-one) inhibits the prion protein conversion from PrPC to PrPSc with lower IC50 in ScN2a cells

Pagadala, Nataraj S.; Bjorndahl, Trent C.; Joyce, Michael; Wishart, David S.; Syed, Khajamohiddin; Landi, Abdolamir (Bioorganic & Medicinal Chemistry, 2017)

Prion diseases are fatal neurodegenerative disorders of the central nervous system characterized by the accumulation of a protease resistant form (PrPSc) of the cellular prion protein (PrPC) in the brain. Two types of ...
Guidelines to groundwater vulnerability mapping for Sub-Saharan Africa

Oke, Saheed Adeyinka; Fourie, François (Elsevier BV: Groundwater for Sustainable Development, 2017)

An approach to solving the challenges encountered in groundwater vulnerability assessment in Sub-Saharan African countries is discussed in this paper. The aim of this review is to highlight the gaps and difficulties encountered ...
A CASE STUDY OF RAPID SAND CASTING DEFECTS

Nyembwe, K.D.; van der Walt, K.; de Beer, D.J.; Gonya, E. (2017)

Rapid sand casting is quickly transforming as an established method for the production of sand moulds and cores for metal casting applications by additive manufacturing processes. The case study investigated possible sand ...
IN-SITU ALLOYING OF TI6AL4V-x%CU STRUCTURES BY DIRECT METAL LASER SINTERING

Newby, E.B.; Kouprianoff, D.; Yadroitsava, I. (Department of Mechanical and Mechatronic Engineering Central University of Technology, South Africa, 2017)

The formation of in-situ Ti6Al4V-x%Cu (1%, 3% and 5% Cu) alloy structures by Direct Metal Laser Sintering (DMLS) for application in medical implants was investigated. Ti6Al4V (ELI) powder was mixed with pure Cu powder of ...
Using fuzzy cognitive maps in modelling and representing weather lore for seasonal weather forecasting over east and Southern Africa

Mwagha, Solomon Mwanjele; Masinde, Muthoni (Indilinga African Journal of Indigenous Knowledge Systems, 2017)

The creation of scientific weather forecasts is troubled by many technological challenges while their utilization is dismal. Consequently, the majority of small-scale farmers in Africa continue to consult weather lore ...
DYNAMIC BEHAVIOUR OF DIRECT METAL LASER SINTERED TI-6AL-4V (ELI) UNDER HIGH STRAIN RATES IN COMPRESSION LOADING

Muiruri, A.M.; Maringa, M.; du Preez, W.B.; Masu, L.M. (Central University of Technology, Free State and Vaal University of Technology, 2017)

Deformation behaviour under dynamic compression of Ti-6Al-4V (ELI) produced through additive manufacturing in two different forms; as-built (AB) and stress relieved (SR), was investigated. Both AB and SR specimens were ...

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