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Now showing items 161-170 of 241
A multi-wavelength study of powerful high redshift radio galaxies
(2021)
We present a new sample of distant powerful radio galaxies, in order to study their
host-galaxy properties and provide targets for future observations of Hi absorption
with new radio telescopes. We cross-match the Sydney ...
New collective structures in the Z=76 stable odd neutron nucleus, 187Os
(University of Western Cape, 2021)
Low- and medium-spin bands of 187Os have been studied using the AFRODITE array,
following the 186W(4He,3n)187Os reaction at a beam energy of 37 MeV. The measurements
of
coincidences, angular distribution ratios ...
Testing gravity with redshift-space distortions, using MeerKAT and the SKA
(University of the Western Cape, 2019)
The growth rate of large-scale structure is a key probe of gravity in the accelerating
Universe. Standard models of Dark Energy within General Relativity predict essentially
the same growth rate, whereas Modified Gravity ...
Proton conductivity stability studies by modelling
(University of the Western Cape, 2016)
In this thesis, some of the challenges experienced by high temperature polymer electrolyte
membrane fuel cells are explored through material modelling techniques. A very important
aspect for a fuel cell is that it should ...
Synthesis of zinc oxide nanoparticles by a green process and the investigation of their physical properties
(University of the Western Cape, 2017)
Zinc oxide (ZnO) is a wide and direct semiconductor with a wurtzite crystal structure. Its
multifunctionality as the ideal candidate in applications such as blue-UV light emitting
diodes, transparent conducting oxide, ...
Tin Catalyst preparation for Silicon Nanowire synthesis
(University of the Western Cape, 2018)
Solar cells offer SA an additional energy source. While Si cells are abundantly
available they are not at an optimal efficiency and the cost is still high. One
technology that can enhance their performance is SiNW. ...
Investigating the Gamma-ray Strength Function in 74Ge using the Ratio Method
(University of the Western Cape, 2018)
An increasing number of measurements reveal the presence of a low-energy enhancement
in the gamma-ray strength function (GSF). The GSF, which is the
ability of nuclei to absorb or emit
rays, provides insight into the ...
Probing galaxy evolution below the noise threshold with radio observations
(University of the Western Cape, 2020)
The faint radio population consisting of star forming galaxies (SFG) and radio-quiet
active galactic nuclei (AGN) is important in the study of galaxy evolution. However,
the bulk of the faint population is below the ...
Spectroscopy of proton unbound states in 32Cl
(University of the Western Cape, 2019)
This project aimed to investigate proton unbound states in 32Cl
using the 32S(3He; t) charge-exchange reaction. This research is
relevant both in the context of nuclear structure and astrophysics.
Excited states in 32Cl ...
Modelling and measurement of radon diffusion through soil application on mine tailings dams.
(University of Western Cape, 2004)
Radon (222Rn) 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 ...