Now showing items 64-83 of 237

  • Galaxy Clustering as a Probe for Galaxy Evolution in Simulations 

    Thomas, Nicole (University of the Western Cape, 2017)
    Studying clustering on small scales (<10Mpc) over a large span of red- shifts allows us to connect galaxies to underlying cosmic large-scale structure, and thereby provide constraints on the physical processes that drive ...
  • Galaxy evolution and cosmology studies using luminous red galaxies 

    Ratsimbazafy, Ando (University of the Western Cape, 2014)
    There have been a number of attempts to measure the expansion rate of the Universe using age-dating of Luminous Red Galaxies (LRGs). Assuming that stars in LRGs form at the same time, age-dating of two populations of LRGs ...
  • Galaxy Evolution and Cosmology using Supercomputer Simulations by Daniel Cunnama 

    Cunnama, Daniel (University of the Western Cape, 2013)
    Numerical simulations play a crucial role in testing current cosmological models of the formation and evolution of the cosmic structure observed in the modern Universe. Simulations of the collapse of both baryonic and ...
  • Gamma spectroscopy and lifetime measurements in the doubly-odd 194tl nucleus, revealing possible chiral symmetry breaking 

    Masiteng, Paulus Lukisi (University of the Western Cape, 2013)
    In the first experiment high spin states in 194Tl, excited through the 181Ta (18O, 5n) heavyion fusion evaporation reaction were studied using the AFRODITE array at iThemba LABS. The γ-γ coincidences, RAD ratios and linear ...
  • Gamma spectroscopy of the doubly– ODD 194Tl Nucleus 

    Ramashidzha, Tshifhiwa Marius (University of the Western Cape, 2006)
    The odd – odd Tl nuclei with A ≥ 190 have moderate oblate nuclear deformation and show rotational bands built on different quasiparticle excitations. Several phenomena, not yet fully understood, were observed in these ...
  • Gas sensing properties of Ceo2 nanostructures 

    Khunou, Ramotseng (University of the Western Cape, 2020)
    The industrial safety requirements and environmental pollution have created a high demand to develop gas sensors to monitor combustible and toxic gases. As per specifications of World Health Organization (WHO) and Occupational ...
  • Giant Magnetocaloric effect and Magnetic Properties of selected Rare-Earth compounds 

    Mbulunge, Masevhe Hamisi (University of the Western Cape, 2021)
    Rare-earth (RE) compounds have been an attractive subject, based on the unique electronic structures of the rare-earth elements. In particular, the RETX (RE = rare-earth, T = 3d/4d/5d, transition metals, and X = p – block ...
  • Growth and characterization of FeSi nanowires by chemical vapor deposition for gas sensing applications 

    Thabethe, Sibongiseni Stanley (University of the Western Cape, 2014)
    FeSi nanowires were synthesized via a chemical vapor deposition method. Anhydrous FeCl3 powder in this case served as the Fe source and was evaporated at a temperature of 1100oC to interact with silicon substrates which ...
  • HI intensity mapping: Impact of primary beam effects 

    Matshawule, Siyambonga Donald (University of the Western Cape, 2023)
    Neutral hydrogen (HI) intensity mapping surveys with upcoming and future radio telescopes such as the MeerKAT, a precursor to the Square Kilometre Array Observatory (SKAO) MID telescope, have great potential for constraining ...
  • An hi study of the nearby dwarf galaxy ic 4710 

    Mothogoane, Getrude Thando (University of Western Cape, 2021)
    This work aims to study the dark matter content of the nearby (7.38 Mpc) dwarf galaxy IC 4710 using the HI line observations from the Australia Telescope Compact Array (ATCA). We produce the rst interferometric maps of ...
  • High resolution gamma-spectroscopy of environmental samples 

    Rapetsoa, Metsi Monnicca (University of the Western Cape, 2019)
    In this study, a comparison has been made between the available commercial software package Genie 2000 developed by Canberra and Virtual Gamma Spectroscopy Laboratory (VGSL) developed by the Radionuclide Development Unit ...
  • Hot-wire chemical vapor deposition of silicon nitride thin films 

    Adams, Abdulghaaliq (2013)
    Amorphous silicon nitride (a-SiN:H) thin films has a multitude of applications, stemming from the tunability of the material properties. Plasma enhanced chemical vapour deposition (PECVD) is the industrial workhorse for ...
  • Hot-wire chemical vapour deposition of carbon Nanotubes 

    Cummings, Franscious Riccardo (University of the Western Cape, 2006)
    In this study we report on the effect of the deposition parameters on the morphology and structural properties of CNTs, synthesized by means of the hot-wire chemical vapour deposition technique. SEM, Raman and XRD results ...
  • Hot-wire chemical vapour deposition of nanocrystalline silicon and silicon nitride : growth mechanisms and filament stability 

    Oliphant, Clive Justin (University of the Western Cape, 2012)
    Nanocrystalline silicon (nc-Si:H) is an interesting type of silicon with superior electrical properties that are more stable compared to amorphous silicon (a-Si:H). Silicon nitride (SiNₓ) thin films are currently the ...
  • Hybrid lead halide perovskite thin films and solar cells by chemical vapour deposition 

    Ngqoloda, Siphelo (University of the Western Cape, 2021)
    The organic-inorganic hybrid perovskites such as methyl ammonium lead iodide (MAPbI3) or mixed halide MAPbI3-xClx (x is usually very small) have emerged as an interesting class of semiconductor materials for their application ...
  • Hydrogen storage capacity of the Ti-Pd multilayer systems 

    Magogodi, Steven Mothibakgomo (University of the Western Cape, 2020)
    Hydrogen has high energy density and it is regarded as the future energy carrier. Hydrogen can be stored as a gas in high-pressure cylinders, as a liquid in cryogenic tanks and as a solid in metal hydrides. The storage of ...
  • Hydrogen storage in Ti-based coatings and Ti6Al4V alloy 

    Mazwi, Sive (University of the Western Cape, 2016)
    Hydrogen has been regarded as an ideal energy carrier for future, it can be stored as a liquid in cryogenic tanks, a gas in high pressure cylinders and as solid in metal hydrides. Hydrogen storage in metal hydrides is of ...
  • Hydrogenisation of metals 

    Ngwanakgagane, Sentsho Zelda (University of the Western Cape, 2013)
    Transition metals are a group of metals which are light in weight and have high hydrogen solubility. Their interaction with hydrogen is exorthermic and this phenomenon makes them “ideal” candidates for various applications ...
  • The impact of environment and mergers on the H I content of galaxies in hydrodynamic simulations 

    Rafieferantsoa, Mika Harisetry (University of the Western Cape, 2015)
    We quantitatively examine the effects of merger and environment within a cosmological hydrodynamic simulation. We show that our simulation model broadly reproduces the observed scatter in H I at a given stellar mass as ...
  • Imprints of Primordial Non-Gaussianity on Large Scale Structure in the Universe 

    Hashim, Mahmoud Yousif Ali Wahba (University of the Western Cape, 2016)
    Large scale structure in the universe is one of the most important probing tools for cosmological modelling. Assuming the hot big bang model of the universe, the expansion history has undergone two phases of acceleration. ...