Now showing items 53-72 of 663

  • Beyond traditional ethics when developing assistive technology for and with deaf people in developing regions 

    Tucker, William David (Springer, 2015)
    There are limitations to traditional ethical approaches and procedures when engaged in assistive technology (AT) research for Deaf people in a developing region. Non-traditional issues arise as a consequence of employing ...
  • Bibliometrics: tracking research impact by selecting the appropriate metrics 

    Henkel, Ralf (Medknow Publications, 2016)
    Traditionally, the success of a researcher is assessed by the number of publications he or she publishes in peer-reviewed, indexed, high impact journals. This essential yardstick, often referred to as the impact of a ...
  • Bioaccumulation of total mercury in the earthworm Eisenia andrei 

    Shirley Le Roux; Priscilla Baker; Andrew Crouch (SpringerOpen, 2016)
    Earthworms are a major part of the total biomass of soil fauna and play a vital role in soil maintenance. They process large amounts of plant and soil material and can accumulate many pollutants that may be present in ...
  • Biodegradable ceramics consisting of hydroxyapatite for orthopaedic implants 

    Monsees, Thomas K.; Azem, Funda Ak; Cotrut, Cosmin Mihai; Braic, Mariana; Abdulgader, Radwan; Pana, Iulian; Birlik, Isil; Kiss, Adrian; Booysen, Robin; Vladescu, Alina (MDPI, 2017)
    This study aims to analyze hydroxyapatite (HAP) coatings enriched with Mg and Ti prepared by a magnetron sputtering technique on Ti6Al4V substrate. For preparation of the coatings, three magnetron targets (HAP, MgO and ...
  • 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, Donald 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 ...
  • Blood pressure gradients and cardiovascular risk factors in urban and rural populations in Abia State South Eastern Nigeria using the WHO STEPwise approach 

    Okpechi, Ikechi Gareth; Chukwuonye, Innocent Ijezie; Tiffin, Nicki; Madukwe, Okechukwu Ojoemelam; Onyeonoro, Ugochukwu Uchenna; Umeizudike, Theophilus Ifeanyichukwu; Ogah, Okechukwu Samuel; Onyeonoro, Ugochukwu Uchenna (Public Library of Science, 2013)
    Background: Developing countries of sub-Saharan Africa (SSA) face a double burden of non-communicable diseases (NCDs) and communicable diseases. As high blood pressure (BP) is a common global cardiovascular (CV) disorder ...
  • Body of evidence: forensic use of baseline health assessments to convict wildlife poachers 

    Henen, Brian T.; Hofmeyr, Margaretha D.; Baard, Ernst H. W. (CSIRO Publishing, 2013)
    CONTEXT. Given the immense impact of wildlife trade, disease and repatriations on populations, health assessments can" "provide powerful forensic material to help convict wildlife poachers and minimise risks of releasing ...
  • Book review: estimating groundwater recharge 

    Xu, Yongxin (Springer Verlag, 2011)
  • 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 ...
  • Bringing together knowledge and capabilities: a case study of engineering graduates 

    Case, Jennifer M.; Marshall, Delia (Springer Verlag, 2016)
    In contemporary times there is a renewed focus on the purposes of university education in science or engineering, especially inemerging economycontexts like South Africa where the massification of higher education is in ...
  • 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 ...
  • Calibrating photometric redshifts with intensity mapping observations 

    Alonso, David; Ferreira, Pedro G.; Jarvis, Matt; Moodley, Kavilan (American Physical Society, 2017)
    Imaging surveys of galaxies will have a high number density and angular resolution yet a poor redshift precision. Intensity maps of neutral hydrogen (HI) will have accurate redshift resolution yet will not resolve ...
  • 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 ...