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Properties of Type Ia supernovae inside rich galaxy clusters
(Oxford University Press, 2013)
We used the Gaussian Mixture Brightest Cluster Galaxy catalogue and Sloan Digital Sky
Survey-II supernovae data with redshifts measured by the Baryon Oscillation Spectroscopic
Survey to identify 48 Type Ia supernovae ...
Beyond traditional ethics when developing assistive technology for and with deaf people in developing regions
(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 ...
Communicating in designing an oral repository for rural African villages
(IIMC International Information Management Corporation, 2012)
We describe designing an asynchronous, oral repository and sharing system that we intend to suit the needs and practices of rural residents in South Africa. We aim to enable users without access to personal computers to ...
Towards a scalability model for wireless mesh networks
(Telkom, 2015)
Zenzeleni mesh network is a wireless ad-hoc mesh network that provides voice services using public analogue telephones to the Mankosi community in the Eastern Cape
Province. We would like to improve on the network ...
Matter bispectrum in cubic Galileon cosmologies
(IOP Science, 2013)
In this paper we obtain the bispectrum of dark matter density perturbations in
the frame of covariant cubic Galileon theories. This result is obtained by means of a semi-
analytic approach to second-order perturbations ...
Physical properties of spectroscopically-confirmed galaxies at z >= 6. II. Morphology of the rest-frame UV continuum and Lyman-alpha emission
(IOP Science, 2013)
We present a detailed structural and morphological study of a large sample of spectroscopicallyconfirmed
galaxies at z ≥ 6, using deep HST near-IR broad-band images and Subaru optical narrowband
images. The galaxy sample ...
VLT/XSHOOTER & Subaru/MOIRCS spectroscopy of HUDF-YD3: No evidence for Lyman-alpha emission at z=8.55
(Oxford University Press, 2013)
We present spectroscopic observations with VLT/XSHOOTER and Subaru/MOIRCS of a relatively bright Y -band drop-out galaxy in the Hubble Ultra Deep Field, first selected by Bunker et al. (2010), McLure et al. (2010) and ...
Membrane electrode assemblies with low noble metal loadings for hydrogen production from solid polymer electrolyte water electrolysis
(Elsevier, 2013)
High performance membrane electrode assemblies (MEAs) with low noble metal loadings (NMLs) were developed for solid polymer electrolyte (SPE) water electrolysis. The electro- chemical and physical characterization of the ...
Palygorskite hybridized carbon nanocomposite as a high-performance electrocatalyst support for formic acid oxidation
(South African Chemical Institute (SACI), 2013)
A nanocomposite, in which acid-treated palygorskite was hybridized with carbon, was prepared and designed as an efficient
support for electrocatatlysts. Pd nanoparticles were deposited on the hybrid support as an ...
Effect of the structure of Ni nanoparticles on the electrocatalytic activity of Ni@Pd/C for formic acid oxidation
(Elsevier, 2013)
Ni@Pd/C catalysts were synthesized, using Ni/C with different crystalline structures prepared with various ligands. A series of characterizations were performed by transmission electron microscopy, X-ray diffraction, X-ray ...