Author:Mgangira, Martin B; Xungu, Sipho A; Giani, John CDate:Jul 2018The deterioration of the aggregate material used in road construction is of concern as it affects the overall long term stability of the road pavement and should be minimised by using durable aggregates. The paper presents proof of concept ...Read more
Author:Ndlovu, GF; Asante, JKO; Roos, WD; Hillie, KTDate:Jul 2011This work present an in situ Variable Temperature Scanning Tunneling Microscopy (VT-STM) study of the Sb/Cu(111) system studied at various temperatures. The experimental data support a structural model in which Sb atoms displace up to 1/3 of ...Read more
Author:Twala, B; Djonon Tsague, HippolyteDate:2016The term carrier mobility generally alludes to both electron and hole mobility in semiconductors. These parameters characterize how quickly an electron and/or hole moves through a metal or semiconductor when under the influence of an electric ...Read more
Author:Makamba, MDate:Mar 2016The proliferation of service technology stimulated the increase usage of services. Services are distinct, loosely coupled units of functionalities that are self-contained. These services are developed by various vendors without following ...Read more
Author:Brandt, P; Moodley, D; Pillay, AW; Seebregts, CJ; De Oliveira, TDate:2014The development of drug resistance is a major factor impeding the efficacy of antiretroviral treatment of South Africa’s HIV infected population. While genotype resistance testing is the standard method to determine resistance, access to these ...Read more
Author:Grzeskowiak, V; Hanuman, A; Andrew, JDate:2011Environmental scanning electron microscopy coupled with energy dispersive x-ray (ESEM/EDX) was optimised to measure the penetration and diffusion of cooking liquor into Eucalyptus grandis wood chips during kraft pulping. The moisture content ...Read more
Author:Brown, Dane; Bradshaw, KDate:May 2016There are a lack of multi-modal biometric fusion guidelines at the feature-level. This paper investigates face and fingerprint features in the form of their strengths and weaknesses. This serves as a set of guidelines to authors that are ...Read more
Author:Du Plessis, A; Rohwer, EG; Steenkamp, CMDate:2007The four carbon monoxide (CO) isotopomers 12C16O, 13C16O, 12C18O and 12C17O have been detected simultaneously in a CO gas sample of natural isotopic abundance by measuring rovibronic excitation spectra of six vibronic bands in the Fourth ...Read more
Author:Folorunso, O; Hamam, Y; Sadiku, R; Adekoya, GJ; Ray, Suprakash SDate:Apr 2020The discredit state of lithium-ion (Ln) battery is as a result of the challenges associated with electrodes, inadequate power and energy densities. For a battery to be classified as suitable for electric vehicle and grid power suppliers, ...Read more
Author:Shatalov, MY; Joubert, SV; Voges, EDate:Jul 2007Vibrating patterns of distributed oscillating structures, subjected to rotation, also turn in the direction of inertial revolution but with different angular rates, which depend on the geometry of the structures, the number of modes, etc. ...Read more
Author:Kumar, R; Kumar, R; Ofosu, ODate:Oct 2015The commodity articles from polyethylene (PE) and polypropylene (PP) are widely used in today’s world. To reduce the carbon footprint, biopolymers such as polylactic acid (PLA) as commodity plastics are also explored. Often, these polymers ...Read more
Author:Padayachi, YR; Thambiran, Tirusha; Naidoo, M; Garland, Rebecca M; Phala, NDate:Oct 2014A study of ozone monitoring data in Johannesburg highlighted that the city is frequently affected by high ozone episodes. There is limited knowledge about the chemical and meteorological drivers of these high ozone episodes in Johannesburg. ...Read more
Author:Padayachi, YR; Thambiran, Tirusha; Naidoo, M; Garland, Rebecca M; Phala, NDate:Oct 2014A study of ozone monitoring data in Johannesburg highlighted that the city is frequently affected by high ozone episodes. There is limited knowledge about the chemical and meteorological drivers of these high ozone episodes in Johannesburg. ...Read more
Author:Kathree, U; Nel, Willem AJ; Van Rensburg, VJ; Mishra, AKDate:Oct 2015In the field of radar, High Range Resolution (HRR) profiles are often used to improve target tracking accuracy in range and to allow the radar system to produce an image of an object using techniques such as inverse synthetic aperture radar ...Read more
Author:Roberts, DE; Du Plessis, A; Steyn, J; Botha, LR; Pityana, Sisa L; Berger, LRDate:Jul 2012Laser Induced Breakdown Spectroscopy (LIBS) was used to study the spectra from fossils and surrounding rock recovered from the Cradle of Mankind site at Malapa, South Africa. The objective was to find a suitable spectral line(s), specific to ...Read more
Author:Belyi, VN; Kazak, NS; Khilo, NA; Forbes, A; Ropot, PIDate:Aug 2009The spectrum of spatial frequencies (SFS) of Bessel beams properties emerging at their spatial localization is investigated. The case, when limiting aperture has a circular shape and a center at any distance from the optical axis, was studied. ...Read more
Author:Lekoadi, Paul M; Maledi, N; Tlotleng, Monnamme; Masina, Bathusile NDate:Feb 2020The investigation of microstructural and hardness properties of high-speed selective laser melted (SLM) produced Ti6Al4V coupons after various heat treatments. Heat treatment was performed in order to homogenize and improve the microstructure ...Read more