Author:Van Wyk, BJ; Van Wyk, MA; Van Den Bergh, FDate:Jun 2007The concept of an Image Difference Spectrum, a novel tool for the extraction of global image information, is introduced. It is shown that Image Difference Spectra are fast alternatives to granulometric curves, also referred to as pattern ...Read more
Author:Horak, RM; Learmonth, RA; Maharaj, VJDate:27 Feb 1995The preparation of 2-[2H]-l-(p-nitrophenyl)-1,2-epoxyheptan-3-one and its subsequent reduction by baker's yeast to the 2,3-diol is described. The mechanism of the reduction of the epoxide was determined using the B-2H isotope shift in 3C ...Read more
Author:Thakur, A; Moyo, P; Van Der Westhuizen, Carl Johan; Yang, HO; Maharaj, VDate:Jul 2021Elevated levels of the amylo ß-proteins (Aß), particularly Aß42, are associated with a high risk of Alzheimer's disease (AD). The Aß proteins are produced from cellular processing of the amyloid precursor proteins (APPs). To identify natural ...Read more
Author:Schenker, R; De Beer, DJ; Du Preez, WB; Thomas, ME; Richter, PWDate:Aug 1999The technologies of reverse engineering and rapid prototyping are emerging as useful new tools in medicine. One application is of particular interest in orthopaedic, dental and reconstructive surgery. It involves the imaging, modelling and ...Read more
Author:Adetunji, KE; Hofsajer, IW; Abu-Mahfouz, Adnan MI; Cheng, LDate:Nov 2022Achieving a sustainable and efficient power systems network and decarbonized environment involves the optimal allocation of multiple distributed energy resource (DERs) unit types and flexible alternating current transmission systems (FACTS) ...Read more
Author:Nicolaides, CPDate:1999Hydrogels, typically used for the synthesis of highly crystalline ZSM-5 samples at 150 degrees C and under autogenous pressure, were subjected to lower hydrothermal synthesis temperatures, i.e., from 25 degrees C to 130 degrees C. XRD analysis ...Read more
Author:Msiza, IS; Malumedzha, TC; Leke-Betechuoh, BDate:Aug 2011Fingerprint re-alignment is an important aspect in the subject of fingerprint biometrics because a fingerprint recognition system that does not attempt to re-align an involuntarily rotated fingerprint can create opportunities for falsely ...Read more
Author:Parmaliana, A; Frusteri, F; Mezzapica, A; Scurrell, MS; Giordano, NDate:07 May 1993Vanadium oxide-silica catalysts can effect the partial oxidation of methane to formaldehyde with extremely high activities and the space time yield (STY) can reach a value in excess of 800 g kg-1cat h-1; bare silica also shows appreciable STY ...Read more
Author:Veldman, CSDate:2003An implementation of the sine-approximation method of ISO 16063-11 (primary vibration calibration by laser interferometry) is described. The quadrature interference signals are generated using an interferometer as described in method 3 of ISO ...Read more
Author:Ikpo, CO; Jafta, CJ; Ozoemena, KI; West, N; Njomo, N; Jahed, N; Baker, PG; Iwuoha, EIDate:Jan 2013Described herein is the electrochemical study conducted on lithium ion battery cathode material consisting of composite of lithium iron phosphate (LiFePO(sub4), iron-cobalt derivatised carbon nanotubes (FeCo-CNT) and polyaniline (PA) nanomaterials ...Read more
Author:Rashamuse, KJ; Burton, SG; Cowan, DADate:Nov 2007Isolation and identification of bacterial isolates with specific ferulic acid (FA) esterase activity and cloning of a gene encoding activity. A micro-organism with ethyl ferulate hydrolysing (EFH) activity was isolated by culture enrichment ...Read more
Author:Wen, L; Wang, X; Liu, GQ; Luo, H; Liang, J; Dou, SXDate:Mar 2018With the advancement of electrode materials for lithium-ion batteries (LIBs), it has been recognized that their surface/interface structures are essential to their electrochemical performance. Therefore, the engineering of their surface by ...Read more
Author:Seid, R; Majozi, TDate:Jan 2012This paper presents a mathematical technique for prediction of the optimal number of time points in short-term scheduling of multipurpose batch plants. The mathematical formulation is based on state sequence network (SSN) representation. The ...Read more
Author:Masindi, VhahangweleDate:Apr 2016The present study was developed with the aim of beneficiating two waste materials by converting them into a resource. Magnesite tailings, which is the by-product of magnesite mining, was used to remediate acid mine drainage (AMD) which is the ...Read more
Author:Nabarro, FRN; Wilsdorf, DKDate:Dec 1996The internal stresses induced by the strain gradients in an array of lattice cells delineated by low-angle dislocation boundaries are partially relieved by the creation of new low-angle boundaries. This is shown to be a first-order transition, ...Read more