Author:Giri, S; Das, R; Van der Westhuyzen, Christiaan W; Maity, ArjunDate:Jul 2017Silver nanocomposites (AgNCs) were produced by adsorption onto an electron-rich polypyrrole-mercaptoacetic acid (PPy-MAA) composite, known to be a highly efficient adsorbent for the removal of Ag+ ions from aqueous media in the remediation ...Read more
Author:Dudley, Angela L; Mhlanga, T; Lavery, M; McDonald, Andre M; Roux, FS; Padget, M; Forbes, ADate:Jan 2013We demonstrate the efficient sorter of Bessel beams separating both the azimuthal and radial components. This is based upon the recently reported transformation of angular to transverse momentum states. We separately identify over forty ...Read more
Author:Mhlanga, T; Dudley, Angela L; McDonald, Andre M; Roux, FS; Lavery, M; Padgett, M; Forbes, ADate:Feb 2013A procedure to efficiently sort orbital angular momentum (OAM) states of light, by performing a Cartesian to log-polar coordinate transformation which translates helically phased beams into a transverse phase gradient, currently exists1. We ...Read more
Author:Timothy, A; Akande, Amos A; Odoh, CK; Philip, M; Fidelis, TT; Amos, PI; Banjoko, OODate:Apr 2021Tremendous efforts in developing sustainable processes for integrated production of value-added products/chemicals and fuels in biorefineries increase through delicate designs towards sustainability. This review focuses on the synthesis of ...Read more
Author:Du Plessis, WPDate:Sep 2011The use of the density-taper approach to initialise a genetic algorithm is shown to give excellent results in the synthesis of thinned arrays. This approach is shown to give better SLL values more consistently than using random values and ...Read more
Author:Prinsloo, FJ; Van Heerden, SP; Ronander, E; Botha, LRDate:Apr 2007A high power 1kW pulsed transversely excited atmospheric CO2 laser that has been developed for the paint stripping of missiles was used to test paint stripping on several metallic and composite aircraft panels to determine the rate at which ...Read more
Author:Bachoo, A; Van Den Bergh, F; Gazendam, ADDate:Nov 2008A single tile from the gridded MODIS products, spanning a region of interest of approximately 10° by 10°, is stored as an image containing close to six million pixels, with data in multiple spectral bands for each pixel. Time series analyses ...Read more
Author:Wasonga, F; Olwal, TO; Abu-Mahfouz, Adnan MIDate:Jun 2018The growth of wireless communication in recent years has resulted to spectrum scarcity and increase in the number mobile users. However, the major concern in wireless communication is spectrum scarcity on fixed spectrum. Technologies such as ...Read more
Author:Makhetha, MJ; Markus, ED; Abu-Mahfouz, Adnan MIDate:Nov 2022This paper presents a wireless power transfer (WPT) technique based on self-resonant Conformal Strongly Coupled Magnetic Resonance (CSCMR) model. The proposed model is compared to a capacitor-loaded mode in terms of their transmission efficiency ...Read more
Author:Davel, M; Barnard, EDate:Nov 2006When developing a language resource, there is generally a trade-off between the amount of effort invested in the resource creation process and the quality of the resulting resource. We (authors) argue that, in the developing world with its ...Read more
Author:Chetty, MDate:Oct 2015E-health, the application of information and communications technologies in healthcare, is viewed as imperative for the successful implementation of healthcare reforms such as South Africa’s re-engineering of its primary healthcare system and ...Read more
Author:Alenoghena, CO; Onumanyi, Adeiza J; Ohize, HO; Adejo, AO; Oligbi, M; Ali, SI; Okoh, SADate:Oct 2022The ramifications of the COVID-19 pandemic have contributed in part to a recent upsurge in the study and development of eHealth systems. Although it is almost impossible to cover all aspects of eHealth in a single discussion, three critical ...Read more
Author:Matsebe, ODate:Nov 2008SLAM is the process by which a robot builds a map of the environment and concurrently localise its position within the map. Solving this problem will render the robot truly autonomousRead more
Author:Maina, JW; Fujinami, K; Matsui, K; Inoue, TDate:Aug 2006Contact stresses at the tire/pavement interface for a stationary or rolling wheel comprise not only of vertical stress compounds but also centripetal stress as well. In this research, wheel load in the form of conically distributed centripetal ...Read more
Author:Isaac, NithinDate:Jan 2020Electric vehicles are being promoted world-wide by governments to reduce dependence on oil and to mitigate greenhouse gas emissions. In addition to barriers to entry such as the cost of the new technology, convenience, and the availability ...Read more
Author:Kebede, Mesfin A; Palaniyandy, Nithyadharseni; Ramadan, RM; Sheha, EDate:Feb 2018A V2O5 anode material significantly challenged on its further development to be used in lithium ion batteries in-terms of its structural degradation, poor cyclability and low conductivity. Thus researchers started to work on composite matrix ...Read more
Author:Govender, M; Mwakikunga, Bonex W; Machatine, AGJ; Kunert, HWDate:Feb 2014Laser pyrolysis was chosen to synthesize tungsten trioxide starting with tungsten ethoxide precursor. The film was found to have a thickness that varied from 205 nm to 1 µm. X-ray diffraction and Raman spectroscopy confirmed the presence of ...Read more
Author:Krug, T; Botha, L; Shamba, P; Baisitse, TR; Venter, A; Engelbrecht, JAA; Botha, JRDate:2006Strong surface inversion usually leads to deceptive Hall measurements by reflecting typical n-type behaviour for p-type samples, especially at very low doping concentrations. A two-layer model is presented which can potentially be used to ...Read more
Author:La Grange, JH; La Grange, CCDate:1971The electrically powered car, on the other hand, not only causes no air pollution, but is also silent and requires little attention and maintenance. In addition, electric power distributors throughout the world should welcome the use of off ...Read more
Author:Dada, M; Popoola, P; Mathe, Ntombizodwa R; Pityana, Sisa L; Adeosun, SDate:Sep 2022In this study, AlCoCrFeNi–Cu (Cu-based) and AlCoCrFeNi–Ti (Ti-based) high entropy alloys (HEAs) were fabricated using a direct blown powder technique via laser additive manufacturing on an A301 steel baseplate for aerospace applications. The ...Read more