Now showing items 31-40 of 143
On non-Hermitian quantum mechanics.
The purpose of this dissertation is to review the salient features of non-Hermitian quantum mechanics. An introduction to Hermitian quantum mechanics is included to make this review as accessible as possible. Attempts ...
Magnetic properties of Mg₁-xZnxFe₂O₄ nanoferrites and tetracycline-ferrite nanocomposites.
Abstract available in print copy.
Velocity, vorticity and turbulence measurements in the surf zone.
The coastal regions of the world play a significant role with regards to social and economic development, and with the ever increasing human activities along the coast, it has become necessary to understand and protect ...
The morphology of radiation damage in copper irradiated with neutrons at elevated temperatures.
This thesis is an investigation of the radiation damage morphology of high purity copper crystals irradiated with fast neutrons at temperatures in the range of 250C to 4OO C. At these high temperatures neutron damage ...
Ionospheric signatures of solar flares.
VLF waves propagate in the Earth-ionosphere waveguide (EIW). The EIW is bounded below by the surface of the Earth and above by the ionospheric D-region (50–90 km altitude). The conditions for wave propagation in the EIW ...
Analysing transient effects in the ionosphere using narrowband VLF data.
Very Low Frequency (VLF) radio waves propagate within the Earth-ionosphere waveguide with very little attenuation. Modifications of the waveguide geometry affect the propagation conditions, and hence, the amplitude and ...
Study on 2002 sudden stratospheric warming, mesopher-lower thermospheric wind structure and dynamics and middle atmospheric structure, based on superDARN HF RADAR, LIDAR, Riometer, satellites and models.
In this thesis, the dynamics and coupling in the middle atmosphere over the Southern Hemisphere are investigated using SuperDARN high frequency (HF) radar wind data, satellites, light detection and ranging (LIDAR), the ...
An experimental study of diamond and the nitrogen vacancy centre as a source of single photons.
For applications in Quantum Information and Quantum Key Distribution an on-demand source of single photons is desirable because absolute security is of utmost importance. Photons are quantum systems; hence encoding information ...
Measurement of soil in sugar cane using non-destructive techniques.
The soil being delivered with sugar cane consignments. from the cane fields to the factories, has been a recent cause for concern in the South African sugar industry. The soil impurities increase the wear of processing ...
The measurement of electric quadrupole moments of gas molecules by induced birefringence.
Determining the electric quadrupole moments of gas molecules from measurements of birefringence induced in the gas by an applied electric field gradient is widely recognised as being the most direct experimental technique ...