12:45
|
--- Lunch ---
|
13:45
|
APSS
-Dr
Christo Venter
(North-west University, Potchefstroom Campus)
(until 15:30)
(Acro2)
|
13:45
|
Astrophysics Poster Blitz
(Acro2)
|
14:15
|
Modeling X-ray Emission and the SED of the Binary Radio Pulsar AE Aquarii
- Mr
Bosco Oruru
(University of the Free State)
(Acro2)
|
14:30
|
Eclipsing Contact Binary Stars – Period Analysis using SuperWASP data
- Ms
Patricia Skelton
(UNISA)
(Acro2)
|
14:45
|
Photometric solutions of eclipsing binary stars
- Prof.
Derck Smits
(University of SA)
(Acro2)
|
15:00
|
Pulsating B stars in the LMC
- Dr
Christian Engelbrecht
(University of Johannesburg)
(Acro2)
|
15:15
|
On the shape of rotating stars.
- Mr
Peter Nicol
(University of Johannesburg)
(Acro2)
|
13:45
|
Applied
-Prof.
Trevor Derry
(University of the Witwatersrand)
(until 15:30)
(Acro3)
|
14:00
|
Indoor temperature predictions in an energy efficient solar house
- Mr
Sosten Ziuku
(Fort Hare Institute of Technology)
(Acro3)
|
14:15
|
Construction and thermal analysis of a parabolic collector for small scale concentrating thermal system
- Mr
Tomas Nhabetse
(Eduardo Mondlane University, Maputo, Mozambique)
(Acro3)
|
14:30
|
Miniaturization of electrostatic ion engine through ionization/acceleration coupling: corona model
- Mr
Marius Tchonang Pokaha
(Wits University)
(Acro3)
|
14:45
|
Miniaturization of electrostatic space thrusters using ionization/acceleration coupling in discharge mode
- Dr
phil ferrer
(wits)
(Acro3)
|
15:00
|
The effective ionization region and its variation with geometrical and electrical properties of the HVDC transmission system
- Mr
Richmore Kaseke
(Fort Hare Institute of Technology)
(Acro3)
|
15:15
|
Industrial application for Global Quantum Communication
- Mr
Abdul Mirza
(UKZN)
(Acro3)
|
13:45
|
CMPMS1
-Dr
Jonathan Keartland
(University of the Witwatersrand)
(until 15:30)
(Parthenon)
|
13:45
|
Theoretical study on possible structures for crystalline silicon dicarbide
- Mr
Richard Andrew
(University of Pretoria)
(Parthenon)
|
14:00
|
Thermodynamic Properties and Inelastic Neutron Scattering of Ferromagnetic CeCuSi
- Ms
Buyi Sondezi-Mhlungu
(University of Johannesburg)
(Parthenon)
|
14:15
|
Reversible Semiconductor – Metal Transition study in nano-FePt system
- Mr
Steven Nkosi
(CSIR and University of the Witwatersrand)
(Parthenon)
|
14:30
|
Blended thin films of tris-(8-hydroxyquinoline) aluminium (Alq<sub>3</sub>) embedded in polymethyl methacrylate (PMMA) and polystyrene (PS).
- Ms
Mart-Mari Duvenhage
(University of the Free State)
(Parthenon)
|
14:45
|
The Magnetocaloric Effect in Ferromagnetic PrSi: Evidence of a Novel Magnetic Gound State and Higher Order Exchange Interactions
- Mr
Jasper Snyman Snyman
(University of Johannesburg)
(Parthenon)
|
15:00
|
Low voltage electron beam induced degradation and surface chemical changes of Zn3(PO4)2:Tb phosphor
- Dr
I M Nagpure
(University of The Free State)
(Parthenon)
|
13:45
|
CMPMS2
-Dr
Walter Meyer
(University of Pretoria)
(until 15:30)
(Acro1)
|
13:45
|
Carbon-Nickel Oxide Nanocomposite coatings: Preparation and characterization
- Mr
Ngcali Tile
(CSIR NLC, School of Physics University of KwaZulu Natal)
(Acro1)
|
14:00
|
Influence of ruthenium on the oxidation behaviour of Cu-CNT nanocomposite interconnect
- Mr
RASIDI SULE
(MTech Stuent at TUT)
(Acro1)
|
14:15
|
Low-temperature Electrical conductivity and Magneto-resistance of Reduced Graphene Oxide Layers
- Mr
Ross McIntosh
(WITS)
(Acro1)
|
14:30
|
Atomistic Simulation Study on Lithiated Manganese Dioxide Nanostructures
- Mr
Kenneth Kgatwane
(University of Limpopo)
(Acro1)
|
14:45
|
Stabilities of low and high pressure structures of CoPO<sub>4</sub> and MnPO<sub>4</sub>
- Mr
NDANDULENI LESLEY LETHOLE
(SAIP)
(Acro1)
|
15:00
|
Equivalent parameters for empirical pseudopotential and k•p models
- Mr
Kagiso Mpshe
(Unisa)
(Acro1)
|
13:45
|
Education
-Mr
Case Rijsdijk
(SAAO (retd))
(until 15:30)
(Acro7)
|
13:45
|
National Curriculum Statement achievement levels – Can they serve as a measure of science students’ preparedness for university study?
- Dr
Leelakrishna Reddy
(University of Johannesburg)
(Acro7)
|
14:00
|
Foundation Provision: Any Difference in Students’ Performance?
- Ms
Buyi Sondezi-Mhlungu
(University of Johannesburg)
(Acro7)
|
14:15
|
Active Learning in the Third Year Statistical Physics Course at the University of the Witwatersrand
- Dr
Jonathan Keartland
(University of the Witwatersrand)
(Acro7)
|
14:30
|
Instructional Design Principles applied to Physics laboratory and tutorial courses
- Dr
Deena Naidoo
(School of Physics, University of the Witwatersrand)
(Acro7)
|
13:45
|
LOS
-Mr
M J Daniel Esser
(CSIR National Laser Centre)
(until 15:30)
(Acro4)
|
13:45
|
NON-SPECIALIST: Spectroscopy in Chemistry
- Dr
Christian Litwinski
(Rhodes University)
(Acro4)
|
14:30
|
Identification of ultrafast processes in the spectroscopy of ZnPc
- Mr
Saturnin OMBINDA-LEMBOUMBA
(CSIR National Laser Centre)
(Acro4)
|
14:45
|
Density Functional Calculation of Metal Dithizonates
- Mr
OLUFEMI OPEYEMI OLAOYE
(STELLENBOSCH UNIVERSITY)
(Acro4)
|
15:00
|
Spectroscopy with a mode-locked Femtosecond Laser Frequency Comb
- Mr
Vela Lincoln Mbele
(School of Physics, University of the Witwatersrand)
(Acro4)
|
13:45
|
NPRP
-Dr
Richard Newman
(iThemba LABS NRF)
(until 15:30)
(Acro8)
|
14:00
|
Determining the impact of anthropogenic activities on the environment by using In Situ gamma ray measurements.
- Dr
Jacques Bezuidenhout
(Stellenboch University)
(Acro8)
|
14:15
|
Radon escape from mine tailings dams
- Mr
Joash Ongori
(UWC)
(Acro8)
|
14:30
|
Low level counting using a NaI(Tl) detector
- Mr
Sive Noncolela
(UWC)
(Acro8)
|
14:45
|
A comparison of analysis methods of gamma-ray spectra obtained with a LaBr3 scintillation detector
- Mr
M.W van Rooy
(Stellenbosch University; iThemba LABS)
(Acro8)
|
15:00
|
Synthesis and Labelling of DISIDA (N-2,6-diisopropyl-phenylcarbamoylmethyliminodicetic) acid
- Mr
KWETANA MUSA LONWABO
(UNIVERSITY OF PRETORIA)
(Acro8)
|
13:45
|
Theoretical
-
Jean Cleymans
(until 15:30)
(Acro5)
|
13:45
|
Monte Carlo simulation using GEANT 4 of MuSR
- Mr
Jonathan Hartman
(University of Johannesburg)
(Acro5)
|
14:00
|
A Quantum Hall Effect without Landau Levels in a Carbon Nanotube.
- Ms
Nanette Brand
(Stellenbosch University)
(Acro5)
|
14:15
|
The Mechanical and Structural Properties of the Pt-Ti and Ir-Ti Alloy Systems
- Mr
Miguel Cavero
(University of KwaZulu-Natal)
(Acro5)
|
14:30
|
Spectral method for studying nuclear four-body reactions
- Mr
Dithlase Masita
(UNISA)
(Acro5)
|
14:45
|
One-way Quantum Computing with Photonic Orbital Angular Momentum
- Ms
Humairah Bassa
(UKZN)
(Acro5)
|
15:00
|
Towards the unconditional security proof for the Coherent-One-Way (COW) protocol
- Mr
Mhlambululi Mafu
(Centre for Quantum Technology)
(Acro5)
|
15:15
|
Structure of Few-Hyperon Systems Studied with the Integro-Differential Equations Approach
-
John S. Nkuna
(University of South Africa)
(Acro5)
|
15:30
|
--- Tea ---
|
16:00
|
Plenary
-Prof.
Nithaya Chetty
(University of Pretoria)
(until 17:00)
(Parthenon)
|
16:00
|
Building a National Digital Library for Computational Physics Education at All Levels
- Dr
Wolfgang Christian
(Davidson College)
(Parthenon)
|
17:00
|
Poster1
-Prof.
JAPIE ENGELBRECHT
(NMMU)
(until 19:00)
(Asteria)
|
17:00
|
Ab initio studies on stabilities of products related to Li/S and Li/O batteries
- Mr
Cliffton Masedi
(University of Limpopo)
(Asteria)
|
17:00
|
Ab initio thermodynamic and elastic properties of Pt-Cr binary alloys
- Mrs
Malebo Tibane
(University of South Africa)
(Asteria)
|
17:00
|
Ab-initio study of structural stability and electronic structure of monoclinic and cubic ZrO<sub>2-x</sub>S<sub>x</sub>x for 0 ≤ X < 2
- Mr
Masilu Godfrey Mulaudzi
(University of Limpopo)
(Asteria)
|
17:00
|
AES and XRD study of In/Cu thin films deposited onto SiO<sub>2</sub> by electron beam evaporation
- Mr
Moshawe Madito
(Student)
(Asteria)
|
17:00
|
Behaviour of iodine implanted in HOPG after heat treatment
- Mr
Mxolisi Mukhawana
(University of Pretoria)
(Asteria)
|
17:00
|
Cathodoluminescence and energy transfer between Er3+, Tm3+and Ho3+ rare earth ions in SiO2 nanoparticles
- Dr
Simon Dhlamini
(University of South Africa)
(Asteria)
|
17:00
|
Computational modelling study of PtAs<sub>2</sub> and PtAsS structures
- Ms
Dinah Makgai
(university of limpopo)
(Asteria)
|
17:00
|
Computational study of hematite(Fe<sub>2</sub>O<sub>3</sub>) and ilmenite(FeTiO<sub>3</sub>) structures
- Mr
peace prince mkhonto
(University of Limpopo)
(Asteria)
|
17:00
|
Computational study of some tin dioxide phases
- Mr
NDUMA NTIMANE
(UNIVERSITY OF LIMPOPO)
(Asteria)
|
17:00
|
Computational study of some tin dioxide phases.
- Mr
James Ntimane
(University of Limpopo)
(Asteria)
|
17:00
|
Computational study of the effect of polydimethylsiloxane (PDMS) side chain size and spacing on the mobility of the polyethylene oxide (PEO).
- Mr
Thomas Kubai
(university of Limpopo)
(Asteria)
|
17:00
|
Computer simulation of cobalt pentlandite
- Mr
Mofuti Mehlape
(University Of Limpopo (Turfloop Campus))
(Asteria)
|
17:00
|
Critical behaviour near magnetic phase transition in CeCuGe
- Ms
Buyi Sondezi-Mhlungu
(University of Johannesburg)
(Asteria)
|
17:00
|
Crystalline Electric Field Effects in PrNiGe<sub>2</sub>
- Mr
Jasper Snyman Snyman
(University of Johannesburg)
(Asteria)
|
17:00
|
Defects and Reconstructions in Electron Beam Irradiated Graphene Sheets
- Mr
Mopeli Fabiane
(University of Pretoria PhD Student)
(Asteria)
|
17:00
|
Dependence of Aspect Ratio of InSb Self-Assembled Quantum Dots on Thickness and Indium Mole Fractions of Spacer Layers
- Mr
MOHIT GODBOLE
(NELSON MANDELA METROPOLITAN UNIVERSITY)
(Asteria)
|
17:00
|
Deposition and structural properties of Silicon Carbide thin films for solar cells applications
- Mr
Joshua Khoele
(University of the Western Cape)
(Asteria)
|
17:00
|
Deposition,Optical and Electrical Characterization of Silicon Carbide Thin Films for Solar Cell Applications
- Mr
Sihle Mkhwanazi
(University of the Western Cape)
(Asteria)
|
17:00
|
Depth-resolved studies of plasma sprayed hydroxyapatite coatings by means of diffraction techniques
- Mr
Tshepo Ntsoane
(Necsa)
(Asteria)
|
17:00
|
Determining the bulk concentration of S in Fe-S: a Auger electron spectroscopy study
- Mr
Pieter Barnard
(UFS)
(Asteria)
|
17:00
|
DRS, XRD and SEM studies of the effects of metal dopants (Pt, Au and Pd) on the structural and optical properties of TiO2.
- Mr
Jacob Ramodika Moloantoa
(University of Limpopo)
(Asteria)
|
17:00
|
Effect of annealing on the Ce3+/Ce4+ ratio measured by XPS in luminescent SiO2:Ce
- Mr
Hassan Seed Ahmed
(University of the Free State)
(Asteria)
|
17:00
|
Effect of growth rate and ZnO buffer layer on the structural and optical properties of MOCVD-grown MgxZn1-xO thin films
- Mr
Kharouna Talla
(Nelson Mandela Metropolitan University)
(Asteria)
|
17:00
|
Effect of pH on the morphology and orientation of Fe2O3 nanostructures grown using aqueous chemical growth
- Mr
Cebo Ndlangamandla
(Student)
(Asteria)
|
17:00
|
Electrical and surface morphological studies of palladium and ruthenium Schottky diodes on n-Ge (100)
- Prof.
Albert Chawanda
(University of Pretoria)
(Asteria)
|
17:00
|
Electrical characterisation of the interface in a Au \ Ni \ n -Al0.18Ga0.82N Scottky contact system
- Dr
W. E. Meyer
(University of Pretoria)
(Asteria)
|
17:00
|
Electrical characterization of irradiated n-GaN
- Mr
Maisela Morongwa
(University of Pretoria)
(Asteria)
|
17:00
|
Electrical Resistivity and magnetic properties of (Ce1xTbx) Pt2Si2 (0 x 1)
- Mr
zwelithini Mahlubi
(University of the western cape)
(Asteria)
|
17:00
|
Exploratory investigation of spin density wave behaviour of a (Cr<sub>86</sub> Re<sub>14</sub>)<sub>100-y</sub> V<sub>y</sub> alloy system
- Mrs
Bincy Susan Jacobs
(University Of Johannesburg)
(Asteria)
|
17:00
|
Graphene Coatings:Snythesi/Physical-Chemical Investigations
- Mr
Nangamso Nathaniel Nyangiwe
(iTemba LABS and University of the Western Cape)
(Asteria)
|
17:00
|
Heat treatment of glassy carbon implanted with strontium at room and high temperatures
- Mr
Dolly Langa
(University of Limpopo and University of Pretoria)
(Asteria)
|
17:00
|
Hydrogenation of Ti6Al4V alloy
- Ms
Zeldah Sentsho
(iThemba labs)
(Asteria)
|
17:00
|
Intervalley and Intravalley Scattering in Diamond Structure, Si and Ge
- Dr
Augusto Machatine
(University of Pretoria)
(Asteria)
|
17:00
|
Investigation of S diffusion in bulk Fe – a DFT study
- Mr
Pieter Barnard
(UFS)
(Asteria)
|
17:00
|
Ion sputtering yield coefficients from In thin films bombarded by different energy Ar<sup>+</sup> ions
- Mr
Moshawe Madito
(Student)
(Asteria)
|
17:00
|
Low temperature synthesis and characterization of ZnO nanoparticles using Polyvinylpyrrolidone (PVP)
- Ms
Modiehi Amelia Tshabalala
(University of the Free State)
(Asteria)
|
17:00
|
Low Temperature Synthesis of ZnO nanoparticles and Nanorods via Wet Chemistry Route
- Ms
Pontsho Sylvia Mbule
(University of the Free State)
(Asteria)
|
17:00
|
Low-lying magnetism in heavy-fermion CeRh2Sn2
- Prof.
Andre Strydom
(University of Johannesburg)
(Asteria)
|
17:00
|
Low-temperature magnetic ordering in Ce6Pd12In5
- Prof.
Andre Strydom
(University of Johannesburg)
(Asteria)
|
17:00
|
Magnetic and strong correlation effect in CeT2Al8 (T=Fe,Co)
- Mr
SARIT KUMAR GHOSH
(UNIVERSITY OF JOHANNESBURG)
(Asteria)
|
17:00
|
Magnetic behavior of the Cr-Al alloys system round the triple point concentration
- Prof.
Aletta Prinsloo
(Department of Physics, University of Johannesburg)
(Asteria)
|
17:00
|
Magnetic vector charges in the realization of nonzero magnetic work
- Dr
Max Chirwa
(Walter Sisulu University)
(Asteria)
|
17:00
|
Measuring the effect of surface evaporation on the segregation process
- Mr
S Cronje
(UFS)
(Asteria)
|
17:00
|
Minimization of optically active structural defects in MOCVD grown ZnO films using oxygen and NO
- Dr
Kouadio Julien Dangbegnon
(Nelson Mandela Metropolitan University)
(Asteria)
|
17:00
|
Non-resonant microwave absorption in FeSi thin films
- Mr
Happison Gavi
(UP)
(Asteria)
|
17:00
|
Optical properties of SrGa<sub>2</sub>S<sub>4</sub>:Ce<sup>3+</sup> films prepared by pulsed reactive cross laser beam ablation method (PRCLA)
- Ms
Pulane Moleme
(200922)
(Asteria)
|
17:00
|
Photoluminescence Surface Mapping as a Probe for Quantum Well Disorder
- Dr
Kaumba Godfrey Chinyama
(University of Fort Hare)
(Asteria)
|
17:00
|
Pt –Al203 nanocoatings for high temprature concentrated solar thermal power applications
- Ms
Zebib Yenus Nuru
(iThemba LABS)
(Asteria)
|
17:00
|
Reactive DC magnetron sputter deposition and characterization of ZrN thin films
- Mr
Thembinkosi Goodman Nyawo
(University of Zululand)
(Asteria)
|
17:00
|
Red emission of Pr3+ enhancement by addition of Ba2+ and In3+ in CaTiO3:Pr phosphor
- Mr
Luyanda Lunga Noto
(University of Free State (Student))
(Asteria)
|
17:00
|
Spectroscopic studies of nanofluorides doped with Ln3+ synthesized via thermal decomposition of organic precursors
- Dr
Marek Gusowski
(Department of Physics University of the Free State)
(Asteria)
|
17:00
|
Spin-density-wave behaviour of the (Cr<sub>100-x</sub>Al<sub>x</sub>)<sub>95</sub>Mo<sub>5</sub> alloy system
- Mr
Blessed Muchono
(University of Johannesburg)
(Asteria)
|
17:00
|
Structure-property relationship of sol-gel synthesised zinc-oxide nanoparticles
- Ms
Natasha Venita Peterson
(University of the Western Cape)
(Asteria)
|
17:00
|
Synthesis & Characterization of Porphyrin Nanotubes/Rods for Solar Radiation Harvesting and Solar Cells
- Ms
nametso Mongwaketsi
(iThemba LABS)
(Asteria)
|
17:00
|
Synthesis and Characterization of CaAl<sub>2</sub>0<sub>4</sub>:Tb<sup>3+</sup> Phosphor using Solution – Combustion Method.
- Ms
Kewele Emily Foka
(University of the Fee Stae)
(Asteria)
|
17:00
|
Synthesis and characterization of PbS nanorods using the chemical bath deposition method
- Mr
Lehlohonolo Koao
(UFS (Qwa Qwa Campus))
(Asteria)
|
17:00
|
Synthesis and characterization of reproducible stoichiometry of cobalt sulfide nanoparticles using sulphur containing single-source precursors
- Mr
Simon Bonginkosi Sibokoza
(Student at Vaal University of Technology)
(Asteria)
|
17:00
|
Synthesis and Characterization of Y<sub>2</sub>O<sub>2</sub>S:Eu Nanophosphors Using Sol-combustion Method
- Mr
Ali Abdub Guyo Ali
(University of the free State, Qwaqwa campus.)
(Asteria)
|
17:00
|
Synthesis and photoluminescence properties of CaxSiyOz:Tb3+ nanophosphors prepared using solution-combustion method.
- Prof.
Francis Dejene
(University of the Free State)
(Asteria)
|
17:00
|
Synthesis and photoluminescence properties of Tb<sup>3+</sup>-cdoped SrZnAl<sub>2</sub>O<sub>4</sub> nano crystals phosphor prepared via combustion process
- Mr
Samy Shaat
(Department of Physics at University of Free State)
(Asteria)
|
17:00
|
Synthesis and photoluminescence studies of (Ba<sub>1-x</sub>Sr<sub>x</sub>)Al<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup>;Nd<sup>3+</sup> prepared by combustion method
- Ms
Mantwa Annah Lephoto
(University of The Free State)
(Asteria)
|
17:00
|
The annealing effects on Pt-Mo coating mophology
- Mr
Zakhelumuzi Khumalo
(ithemba LABS)
(Asteria)
|
17:00
|
The influence of Pr3+ co-doping on the photoluminescence and cathodoluminescence properties of SiO2:Eu3+ /Tb3+.
- Ms
Gugu Mhlongo
(CSIR/UFS)
(Asteria)
|
17:00
|
The Infrared Plasma Resonance of P in SiC
- Prof.
JAPIE ENGELBRECHT
(NMMU)
(Asteria)
|
17:00
|
The Magnetocaloric Effect in CeAuGe: Scaling Behaviour in the Vicinity of a Ferromagnetic Phase Transition
- Mr
Jasper Snyman Snyman
(University of Johannesburg)
(Asteria)
|
17:00
|
The reduction of melting temperature with size in Gold
- Mr
Mokete Mahladisa
(University of Limpopo (Turfloop campus))
(Asteria)
|
17:00
|
The soilid-state interaction of palladium on 6H-SiC
- Ms
Jeaneth Thokozile Kabini
(Univerity of Pretoria)
(Asteria)
|
17:00
|
The study of the distortion of F- and Ba- sublattices in superionic BaF2 at elevated temperatures using positron annihilation technique.
- Mr
Thulani Jili
(University of Zululand)
(Asteria)
|
17:00
|
The Surface Orientation Dependence of the Pre-Exponential Factors Extracted from the Segregation Profiles of a Cu(111/110) Bi-crystal
- Mr
Charl Jafta
(Energy and Processes Unit, CSIR)
(Asteria)
|
17:00
|
The synthesis and characterization of tin oxide SnO2 nanorods
- Ms
Nolwazi Shozi
(none)
(Asteria)
|
17:00
|
Thermal and electronic transport studies of the Kondo energy scale in the heavy-fermion system CeCu5-xAlx
- Prof.
Andre Strydom
(University of Johannesburg)
(Asteria)
|
17:00
|
Thermal transport in the cage-compounds RFe2Al10 (R=Y, Yb)
- Prof.
Andre Strydom
(University of Johannesburg)
(Asteria)
|
17:00
|
Thermoluminescence Study of Long Persistent CaAl<sub>2</sub >O<sub>4</sub>:Eu<sup>2+</sup>, Nd<sup>3+</sup> and/or Dy<sup>3+</sup>.
- Mr
Ali Wako
(University Of The Free State, QwaQwa Campus.)
(Asteria)
|
17:00
|
Use of raman spectroscopy to study fatigue type processes in polycrystalline diamond (PCD)
- Mr
Maxwell Vhareta
(University of the Witwatersrand)
(Asteria)
|
17:00
|
Vanadium dioxide based on nano-devices for photonic apllications
- Mr
itani given madiba
(university of western cape)
(Asteria)
|
17:00
|
Variation of different compositions of Ti-Pt within the B2 region using solid solution method employed in CASTEP
- Ms
Rosinah Mahlangu
(University of Limpopo)
(Asteria)
|
17:00
|
XPS analysis and luminescence properties of commercially Gd2O2S:Tb powder phosphor
- Dr
JAPPIE DOLO
(University of the free state)
(Asteria)
|
17:00
|
xygen adsorption on (110) surfaces of Pyrolusite MnO<sub>2</sub> and Anatase TiO<sub>2</sub>
- Ms
khomotso Maenetja
(University Of Limpopo)
(Asteria)
|