Author:Koen, W; Jacobs, Cobus; Collett, ODate:Jul 2013Laser sources emitting in the 2 micron region is of particular interest for applications in medicine, remote sensing (LIDAR) and directed infra-red countermeasures. In addition, they are also desirable pump sources for efficient optical ...Read more
Author:Oldach, KH; Morgenstern, A; Rother, S; Girgi, M; O'Kennedy, Maretha M; Lorz, HDate:Jul 2001The authors report an in vitro culture system that provides reliable, highly efficient regeneration from immature embryos of pearl millet [Pennisetum glaucum (L.) R. Br.] and sorghum [Sorghum bicolor (L.) Moench]. Immature embryos were isolated ...Read more
Author:Rasheed, J; Wardak, AB; Abu-Mahfouz, Adnan MI; Umer, T; Yesiltepe, M; Waziry, SDate:Oct 2022Granting smart device consumers with information, simply and quickly, is what drives quick response (QR) codes and mobile marketing to go hand in hand. It boosts marketing campaigns and objectives and allows one to approach, engage, influence, ...Read more
Author:Abu-Mahfouz, Adnan MI; Hancke, GPDate:2009Elliptic curve cryptosystems like others public key encryption schemes, require computing a square roots modulo a prime number. The arithmetic operations in elliptic curve schemes over Optimal Extension Fields (OEF) can be efficiently computed ...Read more
Author:Smith, L; Oxtoby, Oliver F; Malan, AG; Meyer, JPDate:Jan 2011A unique technique to couple boundary-layer solutions with an inviscid solver is introduced. The boundary-layer solution is obtained using the two-integral method to solve displacement thickness with Newton’s method, at a fraction of the cost ...Read more
Author:Mittal, H; Alhassan, SM; Ray, Suprakas SDate:Dec 2018Herein, we report the low-temperature hydrothermal synthesis of a novel magnetic carbonaceous adsorbent (MCA) from corn starch for the adsorptive removal of methylene violet (MV) from aqueous solutions. Specifically, the carbon precursor ...Read more
Author:Maxakato, NW; Mamuru, SA; Ozoemena, KIDate:Feb 2011Electrocatalytic reduction of molecular oxygen in alkaline solution using a novel ruthenium tetrakis(diaquaplatinum) octacarboxyphthalocyanine (RuOCPcPt) electrocatalyst supported on multi-walled carbon nanotube electrode has been described. ...Read more
Author:Gusain, Rashi; Kumar, Neeraj; Fosso-Kankeu, E; Ray, Suprakas SDate:Aug 2019In this study, we investigate the adsorption capability of molybdenum sulfide (MoS2)/thiol-functionalized multiwalled carbon nanotube (SH-MWCNT) nanocomposite for rapid and efficient removal of heavy metals [Pb(II) and Cd(II)] from industrial ...Read more
Author:Kumar, Neeraj; Mittal, Hemmant; Parashar, V; Ray, Suprakas S; Ngila, JCDate:Feb 2016This research paper reports the synthesis and usage of the polyacrylamide (PAAm) grafted gum karaya (Gk) and nickel sulphide nanoparticle based hydrogel to effectively remove rhodamine 6G dye (R6G) from aqueous solution. Initially, the hydrogel ...Read morecb
Author:Makgwane, Peter R; Ray, SSDate:Sep 2014An efficient room temperature catalyzed oxidation of cyclohexane to cyclohexanone (K) and cyclohexanol (A) was achieved over hetero-mixed tungsten–vanadia (WO(sub3)/V(sub2)O(sub5)) using H(sub2)O(sub2) oxidant. WO(sub3)/V(sub2)O(sub5) exhibited ...Read more
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