Author:Zondi, MC; Tekane, Yanga C; Magidimisha, Edwin; Wium, Elsmari; Gopal, Ajith K; Bemont, CDate:Sep 2017Infrared (IR) thermography is a technique used to measure temperature distribution of heat generation in manufacturing processes such as welding. IR thermography is a non-destructive and non-contact method, which makes it favoured for the arc ...Read more
Author:Timme, E; Walwyn, D; Bailey, ADate:May 2009Purple carotenoprotein containing astaxanthin as the prosthetic group was extracted from the carapace shells of Jasus lalandii. The material, with a molecular mass of around 400 000 Da and max 525nm (a-crustacyanin), was readily converted ...Read more
Author:Nthwane, Yvonne B; Tancu, Yolanda; Maity, Arjun; Thwala, MelusiDate:Apr 2019The application of titanium oxide engineered nanomaterials (TiO2 (sub 2) ENMs) in products is dominant in sunscreens and can be release into water systems with relative ease during sunscreen use. The current study examined the physico-chemical ...Read more
Author:Lovelock, HDL; Kinds, J; Young, PMDate:1998Fourteen commonly used commercially available, WC 12Co thermal spray powders were characterised in terms of their particle size distribution, surface morphology, cross-sectional morphology, and phase composition. Based on the results, four ...Read more
Author:Ntshidi, Zanele; Gush, Mark B; Dzikiti, Sebinasi; Le Maitre, David CDate:Apr 2018Invasive alien plants (IAPs) pose a serious threat to the already limited water resources in dry countries like South Africa which are facing increasing water shortages. Much of South Africa is expected to get drier in future due to climate ...Read more
Author:Raji, Sadiq Abiola; Popoola, API; Pityana, Sisa L; Popoola, OMDate:Jul 2020The high strength-to-weight ratio property of titanium aluminide (TiAl) based intermetallic alloys makes researchers regard this type of material as a potential replacement for the heavier superalloys of nickel. These alloys have been applied ...Read more
Author:Veldkornet, DA; Adams, JB; Van Niekerk, LaraDate:Nov 2015This study investigated whether the current lateral boundary for estuaries in South Africa, i.e. the estuarine functional zone (EFZ), includes all estuarine habitats. The EFZ covers 173 930 ha in 304 estuaries/outlets nationally. Field surveys ...Read more
Author:Kortidis, Ioannis; Swart, HC; Ray, Suprakas S; Motaung, David EDate:Apr 2019This study investigates the room temperature (RT) gas-sensing and ferromagnetic
behavior of p-type materials based on a comparison of NiO, Mn3O4, and CuO
nanostructures prepared using a hydrothermal method. The Mn3O4 nanorods based
sensor ...Read more
Author:Owonubi, SJ; Aderibigbe, BA; Mukwevho, E; Sadiku, ER; Ray, Suprakas SDate:Mar 2018In this research, hydrogel biocomposites were prepared from whey protein isolate (WPI), reduced graphene oxide (rGO), and synthetic polymers in varied ratios. Their physicochemical properties were evaluated by FTIR, SEM, TGA, AFM, and TEM. ...Read more
Author:Makoana, Nkutwane W; Yadroitsava, I; Möller, H; Yadroitsev, IDate:2018Global industrial adoption of laser-based powder bed fusion (LPBF) technology is still limited by the production speed, the size of the build envelope, and therefore the maximum part size that can be produced. The cost of LPBF can be driven ...Read more
Author:Tshabalala, Lerato C; Mathe, Ntombizodwa R; Chikwanda, HIlda KDate:May 2018In this paper, titanium powders from various sources were characterized to compare powder integrity for additive manufacturing by selective laser melting process. Selective laser melting by powder-bed based Additive Manufacturing (AM) is an ...Read more
Author:Giovannini, D; Romero, J; Leach, J; Dudley, Angela L; Forbes, A; Padgett, MJDate:Apr 2013Mutually unbiased bases (MUBs) play a key role in many protocols in quantum science, such as quantum key distribution. However, defining MUBs for arbitrary high-dimensional systems is theoretically difficult, and measurements in such bases ...Read more
Author:Mahamood, RM; Akinlabi, ET; Shukla, M; Pityana, Sisa LDate:2014This paper reports the material characterization of Ti6Al4V/TiC composite produced by laser metal deposition. The Ti6Al4V/TiC composites were deposited with a composition ratio of 50 wt.% Ti64l4V and 50 wt.% TiC. The depositions were achieved ...Read more
Author:Gummow, RJ; Thackeray, MMDate:Dec 1993LT-LiC0.9Ni0.1O2 prepared at 400 degrees C with a structure that is intermediate between an ideal lithiated spinel and a layered structure has been investigated as an electrode in rechargeable Lithium cells; it delivers a voltage vs. pure ...Read more
Author:Cloete, M; Hart, RJ; Schmid, HK; Drury, M; Demanet, CM; Sankar, KVDate:Nov 1999Sub microscopic opaque particles from highly shocked granite-gneisses close to the core of the Vredefort impact structure have been investigated by means of micro-analytical techniques with high spatial resolution such as electron diffraction, ...Read more
Author:Machio, Christopher N; Nyabadza, D; Sibanda, V; Chikwanda, HKDate:May 2010Face centred cubic Ti – 10 and 20 Mg and Ti-6Al-4Mg (wt. %) alloy powders have been produced by high energy ball milling, under argon, of elemental powder mixtures containing a process control agent (PCA). Milling leads to a multi-disperse ...Read more
Author:Maharaj, VJ; Moodley, N; Vahrmeijer, HDate:Mar 2018The objective was to establish the natural occurrence of the various isomers of monatin in extracts of Sclerochiton ilicifolius plant material harvested from different growing regions in South Africa. The natural occurrence of the 2S,4S isomer ...Read more
Author:Malwela, Thomas; Khumalo, VM; Salehiyan, Reza; Ray, Suprakas SDate:Jul 2018The influences of surface treatment and the concentration of boehmite alumina (BA) particles on polypropylene and polystyrene (PS) (80/20) blends produced via melt compounding were examined. The results show that p-toluene sulfonic acid-treated ...Read more