Now showing items 43-62 of 506

  • Biodegradation of high-concentration isopropanol by a solvent-tolerant thermophile, Bacillus pallidus 

    Bustard, Mark T.; Whiting, Samantha; Cowan, Donald A.; Wright, Phillip C. (Springer Verlag, 2002)
    The aerobic biodegradation of high-concentration, to 24 g l –1 , 2-propanol (IPA) by a thermophilic isolate ST3, identified as Bacillus pallidus , was successfully carried out for the first time. This solvent-tolerant B. ...
  • Biodiversity: so much more than legs and leaves 

    Cowan, Don A.; Rybicki, Edward P.; Tuffin, Marla; Valverde, Angel; Wingfield, Michael (AOSIS OpenJournals, 2013)
    Microorganisms inhabit virtually every possible niche on Earth, including those at the outer envelope of survival. However, the focus of most conservation authorities and ecologists is the ‘legs and leaves’ side of biology ...
  • Bis(ferrocenylimine)palladium(II) and platinum(II) complexes: synthesis, molecular structures and evaluation as antitumor agents 

    Motswainyana, William M.; Onani, Martin O.; Madiehe, Abram M. (Elsevier, 2012)
    Compounds (ferrocenyl-2-furylmethyl)imine (L1), (ferrocenyl-2-thiophenemethyl)imine (L2) and (ferrocenyl-2-thiopheneethyl)imine (L3) were synthesized by condensation reactions and obtained in very good yields. Reactions ...
  • Black hole - galaxy correlations without self-regulation 

    Angles-Alcazar, Daniel; Ozel, Feryal; Dave, Romeel (American Astronomical Society, 2013)
    Recent models of black hole growth in a cosmological context have forwarded a paradigm in which the growth is self-regulated by feedback from the black hole itself. Here we use cosmological zoom simulations of galaxy formation ...
  • Book review: estimating groundwater recharge 

    Xu, Yongxin (Springer Verlag, 2011)
  • Book review: urban geology 

    Xu, Yongxin (Springer Verlag, 2012)
  • Book review: Urban geology 

    Xu, Yongxin (Springer Verlag, 2012)
  • Borehole dilution experiment in a Karoo aquifer in Bloemfontein 

    Xu, Yongxin; van Tonder, Gerrit J.; van Wyk, B.; van Wyk, E.; Aleobua, B. (Water Research Commission, 1997)
    This paper shows that a borehole dilution experiment using common salt is a useful technique for better understanding of some hydrogeological features of a fractured aquifer. A sense of such tracer experiments was performed ...
  • A bridge over the computer science graduate skill gap 

    Blignaut, Renette; Venter, Isabella M.; Renaud, Karen (2013)
    Universities are increasingly required to respond to the ever evolving needs of an ever more sophisticated and globalised workplace, which requires well-rounded workers with more than mere technical knowledge. Employers ...
  • Bridging communications across the digital divide 

    Blake, Edwin H.; Tucker, William David (CTIT, 2004)
    Connecting people across the Digital Divide is as much a social effort as a technological one. We are developing a community-centered approach to learn how interaction techniques can compensate for poor communication across ...
  • Browser-based sign language communication 

    Wang, Yuan Yuan; Tucker, William David (Telkom, 2010)
    This paper describes the design and evaluation of two browser-based video communication prototypes that support sign language communication between Deaf people. The research explores combinations of technologies, protocols ...
  • Browser-based video communication for deaf people 

    Wang, Yuan Yuan; Tucker, William David (Telkom, 2009)
    This paper describes work in progress to to provide browser-based sign language communication for deaf users. The paper introduces the communication requirements for a disadvantaged Deaf community in Cape Town, describes ...
  • A calibration report for wireless sensor-based weatherboards 

    Muthoni, M.; Bagula, Antoine (MDPI, 2015)
    Sub-Saharan Africa contains the highest number of people affected by droughts. Although this can easily be mitigated through the provision of timely, reliable and relevant weather forecasts, the sparse network of weather ...
  • Call capacity for voice over Internet Protocol on wireless mesh networks 

    Zulu, Docas Dudu; Tucker, William David (Telkom, 2010)
    This paper describes work in progress on call capacity optimization for voice over Internet Protocol on wireless mesh networks. In a developing country such as South Africa, evidence has shown that rural inhabitants find ...
  • Candida antifungal drug resistance in sub-Saharan African populations: A systematic review 

    Africa, Charlene Wilma Joyce; Abrantes, Pedro Miguel dos Santos (Science Navigation Group, 2017)
    BACKGROUND: Candida infections are responsible for increased morbidity and mortality rates in at-risk patients, especially in developing countries where there is limited access to antifungal drugs and a high burden of HIV ...
  • Capture zone simulation for boreholes located in fractured dykes using the linesink concept 

    Xu, Yongxin; van Tonder, Gerrit J. (Water Research Commission, 2002)
    Delineation of capture zones for groundwater source protection is normally performed by using numerical codes which are based on the porous medium flow equation. However, boreholes are often sited in or along permeable ...
  • Carbapenem resistance expressed by Gram-negative bacilli isolated from a cohort of Libyan patients 

    Shallouf, Mohamed; Abrantes, Pedro Miguel dos Santos; Africa, Charlene W.J. (BioMed Central, 2016)
    Background and objectives: Carbapenem-resistant Enterobacteriaceae (CRE) and other Gram-negative bacteria are among the most common pathogens responsible for both community and hospital acquired infection. The global spread ...
  • Carbonation of brine impacted fractionated coal fly ash: Implications for CO2 sequestration 

    Muriithi, Grace; Gitari, Wilson; Petrik, Leslie; Ndungu, Patrick (Elsevier, 2011)
    Coal combustion by-products such as fly ash (FA), brine and CO2 from coal fired power plants have the potential to impact negatively on the environment. FA and brine can contaminate the soil, surface and ground water through ...
  • Cardiovascular effects of the alkaloid hippadine on the isolated perfused rat heart 

    Mugabo, Pierre; Obikeze, Kenechukwu; Njagi, Angela; Burger, Andries; Dietrich, Danielle; Green, Ivan (Open Access Science Research Publisher, 2012)
    Crinum macowanii has been used extensively in traditional medicines for treatment of various illnesses such as oedema and ‘heart disease’. Previous studies of the crude bulb extracts on Langendorff perfused isolated rat ...
  • Carybdea branchi, sp. nov., a new box jellyfish (Cnidaria: Cubozoa) from South Africa. 

    Gershwin, Lisa-Ann; Gibbons, Mark J. (Magnolia Press, 2009)
    A common and conspicuous member of the medusan fauna of South Africa has been the subject of repeated taxonomic confusion. After having been mistakenly identified by earlier workers as either Carybdea alata or Tamoya ...