Now showing items 79-98 of 105

  • Radio-optical analysis of extended radio sources in the first look survey field 

    Hons, Claudio Moises Paulo (2010)
    I combine 610 MHz Giant Metrewave Radio Telescope (GMRT) data, 1.4 GHz Very Large Array (VLA) data and 1.4 GHz Westerbork Synthesis Radio Telescope (WSRT) observations, encompassing a ∼ 4 square degree field (sq. deg. ...
  • Radiometric study of soil: the systematic effects 

    Joseph, Angelo Daniel (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 ...
  • Radon escape from water 

    Mvelase, Mashinga Johannes (University of the Western Cape, 2010)
    This thesis aims to measure the rate of radon loss from water in a systematic way. The dependence on surface area, temperature and concentration will be investigated. The experiments were done at UWC by creating radon using ...
  • Radon exhalation of building materials 

    Wentzel, Farrel Sidney (University of the Western Cape, 2018)
    Public concern about all radiation and radon exhalation from building materials has been highlighted recently. The purpose of this study is to address this public concern and to investigate the contribution of building ...
  • Radon in the Cango Caves 

    Nemangwele, Fhulufhelo (University of the Western Cape, 2005)
    Radon is a naturally occurring radioactive element in the 238U decay series that is found in high concentrations in certain geological formations such as Caves. Exposure to high concentrations of radon has been positively ...
  • Redshift-space distortions as a probe of dark energy 

    Gouws, Liesbeth-Helena (University of Western Cape, 2014)
    We begin by finding a system of differential equations for the background and linearly perturbed variables in the standard, ɅCDM model, using the Einstein Field Equations, and then solving these numerically. Later, we ...
  • Signature splitting and inversion in the 186-194 Au Nuclei predicted by the total routhian surface (TRS) and cranked shell model (CSM) calculations 

    Shirinda, Obed (University of the Western Cape, 2007)
    The nearly oblate deformed Au nuclei show rotational bands built on multi quasiparticle excitations [Bou89, Bou92, Gue03, Gue01, Ven92]. Several of these bands are built on rotationally aligned high-j proton and neutron ...
  • Spectroscopy of proton unbound states in 32Cl 

    Kamil, Mohamed (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 ...
  • Spin and parity assignment in 152 Gd investigating octupole structures 

    Bvumbi, Suzan Phumudzo (University of Western Cape, 2008)
    The high-spin states of the nucleus 152Gd have been populated via the 152Sm (α, 4n) 152Gd fusion-evaporation reaction at a beam energy of 45MeV. The emitted γ rays were observed with the AFRODITE spectrometer array. The ...
  • Stellar masses of star forming galaxies in clusters 

    Randriamampandry, Solohery Mampionona (University of the Western Cape, 2010)
    We determine the stellar mass of star forming galaxies in the X-ray luminous cluster MS 0451.6-0305 at z ∼ 0.54. The stellar masses are estimated from fitting model spectral energy distributions (SEDs) to deep, optical ...
  • Study of magnetic properties of nanostructures on self-assembled patterns 

    Malwela, Thomas (University of the Western Cape, 2010)
    In the current study, we give a report when oxalic acid was used as an electrolyte to synthesize an AAO template with hexagonal pore array. Optimum parameters were observed as 0.4 M of oxalic acid, anodizing voltage of 45 ...
  • A study of the angular momentum content of early-type galaxies 

    Tshiwawa, Unarine (University of the Western Cape, 2019)
  • Synthesis and characterisation of 114Cd targets 

    Kheswa, Ntombizonke Yvonne (2011)
    To study nuclear reactions and nuclear structures, target materials are bombarded with high-energy particles. The target material can either be in a form of a metal film or gas. A target material designed to study certain ...
  • Synthesis and characterization of silver nanoparticles for photovoltaic application 

    Adam, Razia Zulfikar (2013)
    With an increase in the amount of harmful carbon emissions in the atmosphere as well as a decrease in the availability of fossil fuels, there is a relatively high demand for alternate energy devices. Solar cells have become ...
  • Synthesis of zinc oxide nanoparticles by a green process and the investigation of their physical properties 

    Nethavhanani, Takalani (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, ...
  • Teenage mothers’ reflections of their unintended, repeat pregnancies 

    Johnstone, Muriel (2013)
    Globally, teenage pregnancy remains a disturbing phenomenon which impacts on the lives of teenagers, their families and society as a whole. Numerous attempts at addressing the problem have seen a decline in fertility rates ...
  • Testing gravity with redshift-space distortions, using MeerKAT and the SKA 

    Viljoen, Jan-Albert (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 ...
  • Testing the statistical isotropy of the universe using radio survey data 

    Baloyi, Mathobela Albert (University of the Western Cape, 2019)
    The Cosmological Principle forms part of one of the most fundamental hypotheses of modern Cosmology. So it is very important to assess whether it holds true using observational data, or whether it consists of a mathematical ...
  • A theoretical study of stellar pulsations in young brown dwarfs 

    Onchong'a, Okeng'o Geoffrey (University of the Western Cape, 2011)
    This thesis reports the results of a twofold study on the recently proposed phenomenon of 'stellar pulsations' in young brown dwarfs by the seminal study of Palla and Baraffe (2005) (PB05, thereafter). The PB05 study ...
  • A theoretical study of stellart pulsations in young brown dwarfs 

    Okeng'o, Geoffrey Onchong’a (University of the Western Cape, 2011)
    This thesis reports the results of a twofold study on the recently proposed phenomenon of ‘stellar pulsations’ in young brown dwarfs by the seminal study of Palla and Baraffe (2005) (PB05, thereafter). The PB05 study ...