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Now showing items 91-100 of 241
Modelling and measurement of radon diffusion through soil for application on mine tailings dam
(University of the Western Cape, 2004)
Radon has been identified as an important factor that could result in a health hazard by studies all around the world. The health risks can be minimised by preventive measures where radon is highly concentrated as in some ...
Clustering studies of radio-selected galaxies
(University of the Western Cape, 2011)
We investigate the clustering of HI-selected galaxies in the ALFALFA survey and compare results with those obtained for HIPASS. Measurements of the angular correlation function and the inferred 3D-clustering are compared ...
Radiometric study of soil: the systematic effects
(University of the Western Cape, 2007)
The natural 238U, 232Th and 40K radioactive content of vineyard soil was measured with an in-situ gamma-ray detector. The activity concentrations measured with the in-situ detector are normalized using the laboratory-determined ...
Low temperature growth of Amorphous Silicon thin film
(University of the Western Cape, 2007)
The growth of amorphous hydrogenated silicon (a-Si:H) thin films deposided by hot wire chemical vapor deposition (HWCVD) has been studied. The films have been characterised for optical and structural properties by means ...
In-situ measurements of radon concentrations in soil gas at a site on the Cape Flats
(University of the Western Cape, 2007)
Measurements of radon (222Rn) concentration in soil gas are routinely used to locate geological fault zones. This study was undertaken to investigate the systematic effects that influence radon soil-gas measurements, in ...
Probing the primordial Universe using the SKA in combination with other cosmological surveys
(University of the Western Cape, 2019)
Next-generation surveys of the large-scale structure of the Universe will be of great
importance in allowing us to extract invaluable information about the nature of the
Universe and the physical laws that govern it, at ...
Simulating the neutral hydrogen distribution during cosmic reionization
(University of the Western Cape, 2018)
We improve on the physical treatment of ionising source and sink populations
in the large scale semi-numerical simulations by implementing new physically
motivated parametrizations taken from high-resolution radiative ...
A study of the nearby interacting galaxy pair NGC 1512/1510
(University of Western Cape, 2020)
This work focuses on generating a new dynamical model of the nearby (9.5 Mpc) interacting
galaxy system NGC 1512/1510. Neutral hydrogen (H i ) observations from the Australia
Telescope Compact Array (ATCA) are used to ...
Post-deposition doping of silicon nanowires
(University of the Western Cape, 2018)
Silicon nanowires (Si NWs) continue to demonstrate superior properties to their bulk
counterparts, with respect to their morphological and electrical transport properties for
the use in photovoltaic (PV) applications. ...
The observed bispectrum for SKA and other galaxy surveys
(University of the Western Cape, 2019)
Next-generation galaxy surveys will usher in a new era of high precision cosmology.
They will increasingly rely on the galaxy bispectrum to provide improved constraints
on the key parameters of a cosmological model to ...