Browsing Physics by Title
Now showing items 4160 of 218

Digital, statistical and wavelet study of turbulence flow structure in laboratory plunging water waves.
(20150728)This dissertation presents an experimental investigation set out to study the evolution of turbulence in laboratory generated breaking water waves. The waves propagate and break as plunging waves on a 1:20 sloping beach. ... 
Dissipative gravitating systems.
(2011)In this thesis we investigate the effect of shear on radiating stars undergoing gravitational collapse. The interior spacetime is described by the most general spherically symmetric line element in the absence of rotation. ... 
Dynamics and thermalization of a fermion in a fermionic bath embedded in a bosonic bath.
(20150707)We consider a model consisting of a finite number of quantum dots each of which confines a spinless electron. We zoom in on a single quantum dot containing an electron of interest treating it as being strongly coupled ... 
The effect of antisymmetrization in diquark models of baryons.
(1997)In this thesis the effect of antisymmetrization in diquark models of baryons composed of light (u and d) quarks is investigated. The diquark in this study is considered alternately as a pointlike and as a composite ... 
The effect of the fcomponent of the pseudopotential on selected properties of 5d transition metal systems
(2008)Cohesive energies, bulk moduli, and equilibrium lattice constants have been calculated for the 5d transition atoms (Hf, Ta, W, Re, Os, Ir and Pt) in face–centred cubic crystal lattices. We have used the ab initio ... 
The effect of the variable chaplygin gas on the CMB.
(2013)In this dissertation, we consider the variable chaplygin gas (VCG) model as derived from the Tachyon gas model and search for a subclass of models that provide an adequate fit to the cosmic microwave background (CMB) ... 
Electrostatic wave phenomena in dusty plasma.
(1995)This thesis is concerned with the some aspects of electrostatic wave phenomena dusty plasmas. In particular Debye shielding, nonlinear potential structures such as diploar vortices and solitons are investigated. The ... 
Electrostatic waves and solitons in electronpositron plasmas.
(1998)The magnetosphere of pulsars is thought to consist of an electronpositron plasma rotating in the pulsar magnetic field (Beskin, Gurevich & Istomin 1983; Lominadze, Melikidze & Pataraya 1984; Gurevich & Istomin 1985). ... 
Endpumped solidstate lasers.
(2010)This dissertation consists of four sections, with the focus on near and midinfrared lasers using Yttrium Lithium Fluoride (YLF) crystals doped with various rareearth ions as a gain medium. As introduction a general ... 
Equilibrium properties of some hightemperature superconductors.
(2007)An important fundamental problem in the understanding of the highTc superconducting systems is the determination of their equilibrium magnetization behaviour, in particular their constitutive Brev(H) orMrev(H) behavior. ... 
The evolution of orbitalangularmomentum entanglement of photons in turbulent air.
(2013)Quantum entanglement plays an important role in the emerging quantum information processing and communications tasks. To this day, almost all these tasks use quantum systems described by a two dimensional Hilbert space ... 
Exactly solvable models for qubits coupled to spin environments : decoherence and entanglement.
(20141125)During the last decade the field of quantum information has seen considerable progress both theoretically and experimentally. The building block of this theory is the socalled qubit, the quantum counterpart of the ... 
Experimental investigation and theoretical analysis of the structural relaxation in amorphous Fe40Ni40B20.
(1998)Amorphous metallic alloys are produced by a variety of techniques some of which involve rapid solidification of the alloying constituents. In these methods the solidification occurs so rapidly that the atoms are frozenin ... 
Experimental investigation of electricfieldinduced birefringence in fluids.
Measurements of the quadratic electrooptical (Kerr) effect of uids can provide knowledge of fundamental molecular properties, such as (hyper)polarizabilities. They also provide valuable information about intermolecular ... 
An experimental investigation of the weaklink problem in granular highTc superconductors.
(2002)Grain boundary weaklink behaviour in superconductors is investigated using a critical state model (CSM), which has been specifically formulated for the applied field range o ~ Ha ~ Hc1g , where Hclg is the intragranular ... 
Experimental investigation of waves breaking over a bar in the surf zone.
(2005)Experiments on regular two dimensional waves breaking over an artificial sand bar were conducted in a glass walled flume to facilitate an investigation of the hydrodynamic processes that evolve in the surf zone. The ... 
Experimental measurement of the fluctuations of a laser beam due to thermal turbulence.
(2013)In this work, we considered and developed a new method to detect and quantify the fluctuations of a laser beam due to thermal turbulence. The new method consisted of a single laser beam propagating in air and passing ... 
Experimental optimization of nanostructured nickel oxide deposited by spray pyrolysis for solar cells application.
(Research India Publications., 2018)This study focused on the experimental optimization of nanostructured nickel oxide (NiO) for solar cell applications. The optimization procedure involved the variation of the precursor concentrations of nickel acetate with ... 
Experimental realization of quantum key distribution.
(2009)Nowadays, the information society that presides the everyday life is dependent on the communication industry to facilitate unintelligible data transfers between authenticated parties. Human desire to communicate ...