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:Khutlang, Rethabile; Machaka, Pheeha; Singh, Ann; Nelwamondo, Fulufhelo VDate:Aug 2017Biometric fingerprint scanners scan the external skin's features onto a 2-D image. The performance of the automatic fingerprint identification system suffers first and foremost if the finger skin is wet, worn out or a fake fingerprint is used. ...Read more
Author:Khutlang, Rethabile; Nelwamondo, Fulufhelo VDate:Dec 2014Biometric fingerprint scanners scan the external skin features onto a 2-D image. The performance of the automatic fingerprint identification system suffers if the finger skin is wet, worn out, fake fingerprint is used et cetera. In this paper, ...Read more
Author:Venter, Karien; Sinclair, M; Lennox, LDate:Jul 2019Novice drivers, worldwide, have a significant risk of being fatally or seriously injured in a road traffic crash. South African statistics show that novice driver crashes (over a three-year period) represent approximately a tenth of all driver ...Read more
Author:Abu-Mahfouz, Adnan MI; Hancke, GPDate:Sep 2011The ns-2 network simulator is one of the most widely used tools by researchers to investigate the characteristics of wireless sensor networks. Academic papers focus on results and rarely include details of how ns-2 simulations are implemented, ...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
Author:Millroy, LDate:Feb 2011The term “nucleic acid therapy” encompasses a wide range of technologies for the treatment of a range of plant and animal ailments. As the name implies, it makes use of nucleic acid (either DNA or RNA) as a therapeutic agent. There are six ...Read more
Author:Millroy, L; Khati, MDate:Sep 2011HIV/AIDS and TB are among the major infectious diseases and defining public health problems in developing countries. This book aims to give an overview of the epidemiology and also provide an understanding of the pathology of these diseases. ...Read more
Author:La Grange, CCDate:1957Subsequent to the issue of this Institutes Technical Memorandum No. 10 of 1955 the results of additional investigations carried out at the Institute on No. Seam coal taken in the ventilation shaft, about 4500ft north- north-east of Springbok ...Read more
Author:Molapo, R; Barnard, EDate:Nov 2014The purpose of this paper is to address the challenges and describe step-by-step solutions faced when developing an automatic speech recognition system in multilingual societies. We give a brief statistical analysis of the data that have been ...Read more
Author:Meyers, Bronwyn C; Grobler, Jan-Hendrik; Snedden, GCDate:Sep 2022A combustor was designed for a 200N micro-gas turbine for the model aircraft industry using the NREC design method. Multiple designs resulted which varied in terms of annular area split configuration, hole area splits and relative hole ...Read more
Author:Loveday, PW; Long, Craig SDate:Nov 2022Guided wave ultrasound has been used to continuously monitor welded rail track by transmitting guided wave ultrasound between alternate transmit and receive stations along the rail. A section of rail was encountered where transmission was not ...Read more
Author:Long, Craig S; Loveday, Philip WDate:Apr 2012The analysis of travelling waves in elastic waveguides with complex cross-sections, such as train rails, can only conveniently be performed numerically. The semi-analytical finite element (SAFE) method has become a popular tool for performing ...Read more
Author:Loveday, Philip WDate:Mar 2006Guided wave ultrasonic inspection is becoming an important method of non-destructive testing for long, slender structures such as pipes and rails. Often it is desirable to use transducers that can strongly excite a specific mode of wave ...Read more
Author:Motsepe, K; Fedotov, I; Shatalov, M; Joubert, SVDate:Sep 2008Students of mathematical physics, engineering, natural and biological sciences sometimes need to use special functions that are not found in ordinary mathematical software. In this paper a simple universal numerical algorithm is developed to ...Read more
Author:Long, Craig S; Loveday, Philip WDate:Jan 2014A guided wave based monitoring system for welded freight rail, has previously been developed. The existing system was designed to only detect complete breaks. Current research efforts are focused on including a pulse-echo mode of operation ...Read more
Author:Dunn, Dwain I; Von Backström, TWDate:Aug 2011Turbine manufacturers are continually striving to improve turbine performance, and thus reduce emissions, which has been accelerated with the inception of the Kyoto protocol. One of the areas that have received attention is the controlling ...Read more
Author:Long, Craig S; Loveday, Philip W; Forbes, A; Land, KDate:Jan 2010For intra-cavity laser beam control, a small, low-cost deformable mirror is required. This mirror can be used to correct for time- dependent phase aberrations to the laser beam, such as those caused by thermal expansion of materials. A ...Read more
Author:Long, Craig S; Loveday, Philip WDate:Sep 2012The semi-analytical finite element (SAFE) method has become a popular tool for the analysis of elastic waveguides with complex cross-sections. We employ a recently developed hybrid SAFE-3D FE method to study the scattering of guided waves at ...Read more
Author:Van de Steen, B; Vervoort, A; Napier, JALDate:Mar 2001A two-dimensional boundary element code, based on the displacement discontinuity method is used to simulate a confined compression test. The method takes account of the granular nature of the rock and of the presence of pre-existing defects. ...Read more