Author:Botha, GE; Oliveira, JC; Ahrné, LDate:Apr 2012Combination of osmotic dehydration with microwave assisted air drying offers increased flexibility for process control and product quality. Osmotic dehydration (55ºBrix solution at 40ºC for 90 minutes) combined with microwave assisted air ...Read more
Author:Mngenge, NA; Nelwamondo, Fulufhelo V; Malumedzha, T; Msimang, NDate:Jun 2012The need for segmentation of low quality fingerprints in forensics, high security and civilian applications is constantly increasing. Most segmentation algorithms proposed in the literature normally deal with separation of the background ...Read more
Author:Bugan, Richard DH; Jovanovic, Nebojsa; De Clercq, WPDate:Jun 2015Soil and stream salinisation is a major environmental problem because it reduces the productivity of landscapes and degrades water quality. The Berg River (South Africa) has been exhibiting a trend of increasing salinity levels, which has ...Read more
Author:Dudley, Angela L; Litvin, IA; Forbes, ADate:Mar 2012In this work we derive expressions for the orbital angular momentum (OAM) density of light, for both symmetric and nonsymmetric optical fields, that allow a direct comparison between theory and experiment. We present a simple method for ...Read more
Author:Abia, ALK; Ubomba-Jaswa, Eunice; Genthe, Bettina; Momba, MNBDate:Oct 2016Although higher microbial concentrations have been reported in sediments than in the overlying water column, most quantitative microbial risk assessment (QMRA) studies have not clearly indicated the contribution of sediment-borne pathogens ...Read more
Author:Uys, Hermann; Bassa, H; Du Toit, P; Ghosh, S; Konrad, TDate:Jun 2018Measurement combined with feedback that aims to restore a presumed premeasurement quantum state will yield this state after a few measurement-feedback cycles even if the actual state of the system initially had no resemblance to the presumed ...Read more
Author:Fosu, EA; Obuah, C; Hamenu, L; Aniagyei, A; Ainooson, MK; Govender, Krishna KDate:Aug 2021Transition-metal-mediated oxygen transfer reactions are of importance in both industry and academia; thus, a series of rhenium oxo complexes of the type ReO3L (L=O-, Cl-, F-, OH-, Br-, I-) and their effects as oxidation catalysts on ethylene ...Read more
Author:Sephton, Bereneice; Dudley, Angela L; Forbes, ADate:Dec 2017Bereneice Sephton, Angela Dudley and Andrew Forbes explain the importance of random motion. So, what exactly is random motion? The answer can be dated back to 1827 when a botanist, Robert Brown, noted the movement of pollen floating on water ...Read more
Author:Bogaers, Alfred EJ; Kok, S; Reddy, BD; Franz, TDate:Sep 2014In this paper we introduce a new multi-vector update quasi-Newton (MVQN) method for implicit coupling of partitioned, transient FSI solvers. The new quasi-Newton method facilitates the use of 'black-box' field solvers and under certain ...Read more
Author:Haelterman, R; Bogaers, Alfred EJ; Degroote, J; Boutet, NDate:Aug 2017Often in nature different physical systems interact which translates to coupled mathematical models. Even if powerful solvers often already exist for problems in a single physical domain (e.g. structural or fluid problems), the development ...Read more
Author:Abdul Gaffar, MY; Nel, Willem AJ; Inggs, MRDate:Oct 2008Inverse synthetic aperture radar (ISAR) is an imaging technique that is dependent on an object’s rotational motion over a coherent processing interval. Maritime vessels and aircraft possess 3-D rotational motion, whereas it is only their ISAR ...Read more
Author:Goyal, SK; Boukama-Dzoussi, PE; Ghosh, S; Roux, FS; Konrad, TDate:Apr 2014Quantum teleportation, the transfer of the state of one quantum system to another without direct interaction between both systems, is an important way to transmit information encoded in quantum states and to generate quantum correlations ...Read more
Author:Henriques, R; Lelek, M; Fornasiero, EF; Valtorta, F; Zimmer, C; Mhlanga, MusaDate:May 2010QuickPALM in conjunction with the acquisition of control features provides a complete solution for the acquisition, reconstruction and visualization of 3D PALM or STORM images, achieving resolutions of ~40 nm in real time. This software package ...Read more
Author:Curle, A; Moller, H; Govender, GDate:2013The history of semi-solid metal forming and in particular rheo-high pressure die casting at the Council for Scientific and Industrial Research in South Africa is discussed. Processing flexibility is demonstrated on the Al-Si-Mg, Al-Mg-Si, ...Read more
Author:Zhang, Y; Roux, FX; McLaren, M; Forbes, ADate:2014The radial degrees of freedom of the biphoton states that are produced in spontaneous parametric down-conversion (SPDC) in the Laguerre-Gaussian (LG) basis are investigated, theoretically and experimentally. We calculated the theoretical ...Read more
Author:Mathuthu, M; Raseleka, RM; Forbes, A; West, NADate:Dec 2006Laser-induced breakdown spectroscopy (LIBS) is a non-intrusive technique that needs no sample preparation and even recently, quantitative measurements were done without the need for calibration standards. Much research has been done on the ...Read more
Author:Makinta, MJ; Brinders, JM; Smith, KADate:Oct 2005Irradiation has adverse effects on reproductive aspects such as spermatogenic cell population and cell malformation, leading to reduced sperm count and non-viable spermatozoa. This has overshadowed possible effects of radiation exposure on ...Read more