• Cooperatives in waste and recycling: A recipe for failed waste hierarchy implementation? 

  Muswema, Aubrey P; Okem, A; Blottnitz, H; Oelofse, Suzanna HH (2018-10)

  In post-apartheid South Africa, cooperatives appear to be the government’s SMME model for driving job creation. Unfortunately, the mortality rates of cooperatives in all sectors is very high with a reported 12% survival ...
• Numerical simulation of plastic deformation and mechanical response of strip rolled aluminium alloys 

  Jansen van Rensburg, Gerhardus J; Bogaers, Alfred EJ (IOP Publishing, 2018-10)

  During the optimal design and simulation of machining or forming processes, detailed simulation of structural response is typically required for use in Finite Element Analysis (FEA). In this study, the bulk temperature and ...
• Analysis of mechanical property degradation in polymer nanoclay composites 

  Botha, Natasha; Inglis, HM; Labuschagne, FJWJ (2018-11)

  Polymers are used in various industrial applications due to their ease of production, light weight and ductility. Fillers such as nanoclays are added to polymers to improve a range of factors such as material processing, ...
• Printed RFID tags on paper and flexible substrates towards low-cost connected sensor systems 

  Smith, Suzanne; Oberholzer, Adelaide E; Land, Kevin J; Korvink, JG; Mager, D (2018-11)

  We present printed sensing radio frequency identification (RFID) tags on different paper and flexible substrates towards low-cost, automated connected sensor solutions. Combining the Internet of Things (IoT) with printed ...
• Synthesis of a novel amphiphilic nano-chitosan material 

  Matshe, William MR; Tshweu, Lesego L; Balogun, Mohammed O (IOP Publishing Ltd, 2018-10)

  Chitosan (CS) is a semi-synthetic polysaccharide derived from the most abundant naturally occurring polymer, chitin. It has found applications in fields as diverse as health, cosmetics, agriculture, environmental remediation ...
• Atmospheric corrosion testing in southern Africa: results of a twenty year national exposure programme 

  Callaghan, BG (Scientia Publishers, 1991)

  Atmospheric corrosion is one of the most widespread causes of metal and alloy degradation known. We only have to look at the corrosion of structural steelwook in buildings, bridges and other forms of construction to recognise ...
• The potential of paper-based diagnostics to meet the ASSURED criteria 

  Smith, Suzanne; Korvink, JG; Mager, D; Land, Kevin J (Royal Society of Chemistry, 2018-10)

  Paper-based diagnostics have already revolutionized point-of-care approaches for health and environmental applications, by providing low-cost, disposable tools that can be utilized in remote settings. These devices typically ...
• Tuning hydrophobic-hydrophilic balance of cathode catalyst layer to improve cell performance of proton exchange membrane fuel cell (PEMFC) by mixing polytetrafluoroethylene (PTFE) 

  Chi, B; Hou, S; Liu, G; Deng, Y; Zeng, J; Song, H; Liao, S; Ren, Jianwei (Elsevier, 2018-07)

  The wettability, or hydrophobic-hydrophilic balance, of cathode catalyst layer influences the performance of the proton exchange membrane fuel cell. In this paper, cathode catalyst layer with different polytetrafluoroethylene ...
• A review of waste tyre gasification 

  Oboirien, Bilainu O; North, Brian C (Elsevier, 2017-10)

  There has not been any comprehensive review on waste tyre gasification. This review evaluates the status of global research on gasification of waste tyres and the gaps in knowledge. Some recommendations for future research ...
• Standard method for microCT-based additive manufacturing quality control 2: Density measurement 

  Du Plessis, A; Sperling, P; Beerlink, A; Tshabalala, Lerato C; Hoosain, Shaik E; Mathe, Ntombizodwa R; Le Roux, SG (Elsevier, 2018-09)

  MicroCT is best known for its ability to detect and quantify porosity or defects, and to visualize its 3D distribution. However, it is also possible to obtain accurate volumetric measurements from parts – this can be used ...
• Standard method for microCT-based additive manufacturing quality control 3: Surface roughness 

  Du Plessis, A; Sperling, P; Beerlink, A; Kruger, O; Tshabalala, Lerato C; Hoosain, Shaik E; Le Roux, SG (Elsevier, 2018-09)

  The use of microCT of 10 mm coupon samples produced by AM has the potential to provide useful information of mean density and detailed porosity information of the interior of the samples. In addition, the same scan data ...
• Impact of wall material physicochemical characteristics on the stability of encapsulated phytochemicals: A review 

  Labuschagne, Philip W (Elsevier, 2018-05)

  Phytochemicals are plant-derived chemicals that have a number of protective or health-promoting properties. However, their health benefits and thus commercial potential can be restricted due to their instability to ...
• Functionalization of PLGA Nanoparticles with 1,3-ß-glucan Enhances the Intracellular Pharmacokinetics of Rifampicin in Macrophages 

  Tukulula, M; Gouveia, L; Paixao, P; Hayeshi, R; Naicker, Brendon; Dube, A (Springer, 2018-06)

  Mycobacterium tuberculosis which causes tuberculosis, is primarily resident within macrophages. 1,3-ß-glucan has been proposed as a ligand to target drug loaded nanoparticles (NPs) to macrophages. In this study we characterized ...
• High-resolution capacitance-frequency converter for biosensor applications 

  Ghoor, Ikraam S; Bezuidenhout, Petrone H; Joubert, Trudi H (IEEE, 2017-09)

  This paper presents the design of a low-complexity, linear and sub-pF CMOS capacitance-frequency converter for reading out capacitive bacterial bio/sensors in an attempt to create a widespread bio/sensor readout module. ...
• Comparative studies of Alkali activated South African Class F and Mongolian Class C fly ashes 

  Temuujin, J; Mapiravana, Joseph; Bayarzul, U; Oyun-Erdene, G; Zolzaya, TS; Darkhijav, B; Dlamini, Mandla N; Rüscher, CH (Springer, 2017-03)

  The 7 days compressive strength of alkali activation of class C fly ash from Mongolia (Banganuur fly ash) and class F fly ashes from South Africa (Ash Resources, Ulala) were measured, depending on different waterglass (WG) ...
• The characterisation and design improvement of a paper-based E.coli impedimetric sensor 

  Bezuidenhout, Petrone H; Kumar, Raju; Wiederoder, M; Schoeman, J; Land, Kevin J; Joubert, T-H (SPIE, 2017-02)

  This paper describes the development and optimisation of a paper-based E. coli impedimetric biosensor for water quality monitoring. Impedimetric biosensing is advantageous because it is a highly sensitive, label-free, ...
• An in vitro and in vivo study on the properties of hollow polycaprolactone cell-delivery particles 

  Stander, BA; van Vollenstee, FA; Kallmeyer, K; Potgieter, M; Joubert, A; Swanepoel, Andri; Kotzé-Jacobs, Lara; Moolman, S; Pepper, MS (PLOS, 2018-07)

  The field of dermal fillers is evolving rapidly and numerous products are currently on the market. Biodegradable polymers such as polycaprolactone (PCL) have been found to be compatible with several body tissues, and this ...
• Phase transformation and microstructural control of the a-solidifying -Ti-45Al-2Nb-0.7Cr-0.3Si intermetallic alloy 

  Mathabathe, Maria N; Govender, Gonasagren; Bolokang, Amogelang S; Mostert, RJ; Siyasiya, CW (Elsevier, 2018-08)

  The -Ti-45Al-2Nb-0.7Cr-0.3Si based intermetallic alloy was developed. Microstructure evolution of the as-cast and heat-treated alloy yielded the spheriodised and Widmanstatten laths. High temperature differential thermal ...
• Response of Ti microstructure in mechanical and laser forming processes 

  Fidder, H; Ocelik, V; Botes, Annelize; De Hosson, JTM (Springer, 2018-07)

  Microstructural deformation mechanisms present during three different forming processes in commercially pure Ti were analysed. Room temperature mechanical forming, laser beam forming and a combination of these two processes ...
• Sustainability of additive manufacturing for the South African aerospace industry: a business model for laser technology produdction, commercialization and market prospects 

  Oyesola, M; Mathe, Ntombizodwa R; Mpofu, K; Fatoba, S (Elsevier, 2018-05)

  Ever changing products, technology and competition make manufacturing a challenging task with respect to responding to market opportunities. A key technology exploited for revolutionary change in the phase of manufacturing ...

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