Author:Momba, MNB; Cloete, TE; Venter, SN; Kfir, RDate:Sep 1999Groundwater was treated with chlorine and chloramine to study the incorporation and survival of Escherichia coli (E. coli) in developing biofilms in laboratory-scale units. Membrane filter and standard spread plate procedure were used to ...Read more
Author:Van Aardt, JAN; Wynne, RHDate:Jan 2007Three southern USA forestry species, loblolly pine (Pinus taeda), Virginia pine (Pinus virginiana), and shortleaf pine (Pinus echinata), were previously shown to be spectrally separable (83% accuracy) using data from a full-range spectro-radiometer ...Read more
Author:Robinson, TP; Harris, RS; Hopkins, JS; Williams, BGDate:Jun 2002In many African countries where both Government resources and donor aid for the control of tsetse-transmitted trypanosomiasis are declining, there is an increasing need to identify areas where intervention is most likely to be technically, ...Read more
Author:Letcher, TM; Govender, PUDate:Dec 1997The excess molar volumes V-m(E) {x(CH3OH or CH3CH2OH or CH3(CH2)(2)OH or CH3CH(OH)CH3 + (1 - x)(CH3(CH2)(2)}(2)O or CH3C(CH3)(2)OCH3 or CH3CH2C(CH3)(2)OCH3} have been calculated from measured values of density over the whole composition range ...Read more
Author:Bell, Lebohang T; Hasnaoui, A; Ait-Ameur, K; Ngcobo, SandileDate:Sep 2017In this paper, we experimentally demonstrate selective excitation of highradial-order Laguerre-Gaussian (LGp or LGp;0) modes with radial-order, p = 1 - 4 and azimuthal-order, l = 0, using a diode-pump solid-state laser (DPSSL) that is digitally ...Read more
Author:Setshedi, Katlego Z; Bhaumik, M; Songwane, S; nyango, MS; Maity, ArjunDate:2013Exfoliated polypyrrole-organically modified montmorillonite clay nanocomposite (PPy OMMT NC), was prepared as a potential adsorbent, via in situ polymerization of pyrrole monomer for adsorption of toxic Cr(VI) from aqueous solution. The WAXD ...Read more
Author:Nel, JL; Reyers, B; Roux, DJ; Cowling, RMDate:Aug 2009There has been very little consideration of freshwater ecosystems in identifying and designing protected areas. Recent studies suggest that protected areas hold enormous potential to conserve freshwater biodiversity if augmented with appropriate ...Read more
Author:Dlodlo, N; Beyers, RNDate:2009The article reports on an effort to address the issue of inequality in girls’ and women’s access to science, engineering and technology (SET) education and careers through raising an awareness on SET among school girls in South Africa. Secondary ...Read more
Author:Kumirai, Tichaona; Dirker, J; Meyer, JDate:Mar 2019Due to climate change and rising global temperatures, energy demand associated with commercial and office building cooling, is projected to increase. Passive-cooling, based on phase change materials, can assist to moderate this increase, ...Read more
Author:Nyadongo, ST; Olakanmi, EO; Pityana, Sisa LDate:Sep 2021Laser cladded (LC) tribaloy (T-800) coating has been used for surface modification of engineering components in high wear and elevated temperature service environments. However, the cracking phenomenon often observed in LC T-800 coating is ...Read more
Author:Lavrov, A; Vervoort, A; Wevers, M; Napier, JALDate:Apr 2002Sensitivity of the Kaiser effect to the deviations of the directions of sigma(1)-principal stress experienced by rock in Successive loading cycles has an important impact on the application of this effect for stress measurements in rocks. The ...Read more
Author:Soare, A; Ball, H; Hayes, D; Zhen, X; Jarratt, MC; Sastrawan, J; Uys, H; Biercuk, MJDate:Apr 2014We develop and demonstrate a technique to engineer universal unitary baths in quantum systems. Using the correspondence between unitary decoherence due to ambient environmental noise and errors in a control system for quantum bits, we show ...Read more
Author:Bambalaza, Sonwabo E; Langmi, HW; Mokaya, R; Musyoka, Nicholas M; Khotseng, LEDate:May 2020High-pressure (700 MPa or ∼100 000 psi) compaction of dehydroxylated and hydroxylated UiO-66 for H2 storage applications is reported. The dehydroxylation reaction was found to occur between 150 and 300 °C. The H2 uptake capacity of powdered ...Read more
Author:Machaka, Ronald; Chikwanda, HKDate:May 2015This paper reports on an attempt to independently evaluate the validity and applicability of a new compaction equation recently presented by Gerdemann and Jablonski [Metallurgical and Materials Transactions A, 42 (2011) 1325-1333] using ...Read more
Author:Nzengue, AGB; Mpofu, K; Mathe, Ntombizodwa R; Daniyan, I; Muvunzi, RaDate:Jul 2023The chase for sustainable manufacturing that contributes to addressing climate change is of research interest across scientists and industrial sectors. The lightweight and high strength properties of aluminium alloys foster sustainable cost, ...Read more
Author:Elkoussy, A; Youssef, AF; Pityana, Sisa L; Taha, MADate:2019Coating steel surfaces with hard ceramic particles in Aluminum has a great influence to improve mechanical properties and wear resistance. This research investigated direct laser deposition, where no binder is used, of pure Aluminum and its ...Read more
Author:Roux, A; Nurick, GNDate:Sep 2009The Council for Scientific and Industrial Research (CSIR) conducts research into the effect of underwater explosions on maritime structures and equipment. One of the parameters that are required to be measured to a large degree of accuracy ...Read more
Author:Du Plessis, WP; Odendaal, JW; Joubert, JDate:Jan 2010Experimental measurements that accurately simulate the effect of a retrodirective cross-eye jammer on a monopulse radar are described. The accuracy of a recently published extended analysis of retrodirective crosseye jamming and the limitations ...Read more