etd AT Indian Institute of Science: Recent submissions
Now showing items 1201-1220 of 9462
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structure and conformation of steriodals
In the previous chapter, the influence of the same additional ring on two different steroid nuclei (1,4?diene?3?one and 5?ene) was discussed. Here, we present the effects of three different additional rings on the 5?ene ... -
Observational constraints on the formation of pre-galactic condensates in the universe.
The distribution of galaxies in the Universe displays structure on a variety of scales, ranging from groups of a few galaxies to rich clusters containing thousands of galaxies. These clusters are in turn clustered to form ... -
The influence of pulsars on supernova remnants
Both Supernova Remnants (SNRs) and pulsars are products of supernova explosions; so it is natural to expect an association between them. Since various selection effects work against the detection of pulsars, the best way ... -
Non-ohmic conduction electrical switching and magneto-resistance of quasi one-dimensional conductors at high pressures
Electrical switching in the three charge?transfer complexes mtpa?(TCNQ)_x, benzidine–DDQ, and o?tolidine–DDQ has a common origin, and the basic features observed in these complexes are the same. Current–voltage (I–V) ... -
Investigations on the Mechanical threshold in IV-V-VI Glasses
The main features observed in the DSC studies of Ge–As–Te glasses are the following: (i) The T? versus ?r? plot for the two families of Ge–As–Te glasses shows a linear increase with ?r?, with a small change in slope at ?r? ... -
Constrined hamiltonian dynamics geometric structure and application to relativistic particle machanics
The study of constrained dynamical systems has gained importance in recent years, following the realisation that they are often found in nature. The subject developed out of efforts to recast Einstein's theory of gravitation ... -
Surface explosive instabilities in a beam plasma system
Explosive instability due to non?linear wave–wave interaction is one of the most interesting phenomena in non?linear plasma theory. Since it is widely recognized that plasma, either in nature or in laboratory, is bounded ... -
Theoretical studies on collective orientational relaxation, solvation dynamics and electron transfer reactions in dense dipolar liquids
In this thesis, a microscopic study of the collective orientational relaxation and its role in the dynamics of solvation and electron transfer reactions in dense dipolar liquids is presented. The origin of collective ... -
Investigations of catalysts and oxide superconductors ny exafs and other techniques
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Spectroscopic and theoretical investigations of amides and free radicals of biological interest
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Molecular dynamics of the sorption and diffusion behaviour of spherical sorbates in the confined region of zeolites Y and A
The sorbate–zeolite RDFs and sorbate–zeolite energy distribution functions suggest that the sorbates are largely localized inside the cages at the lowest temperature (188 K) studied. At low temperature, the sorbate prefers ... -
Investigations of solids and surfaces by techniques of electron spectroscopy
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Thin films of pure and doped GaN deposited on single crystal substrates by nebulized spray pyrolysis
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Materials with hydrgenbonded tartrate motifs : Implications on second harmonic generation
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Studies of photodimerization of olifins in the solid state and phase trasitions of organic solids
(1) Infrared spectra of the high?temperature phases of dimethylammonium chloride and of the methylammonium tetrachlorometallates show evidence for the presence of an essentially “undistorted” C?H?NH?? ion of C?v symmetry. ... -
Engineered Fiber Bragg Grating Sensors for High- Sensitivity Healthcare and Environmental Diagnostics
The growing demands of modern healthcare and environmental safety call for sensing technologies that are rapid, highly sensitive, and deployable in real-world settings. This thesis addresses this challenge by establishing ... -
Multithreaded media processing architectures - A frameworkq
Multimedia processing constitutes a significant part of current?day average microprocessor workloads. The coming of age of various enabling technologies like the Internet, compact discs, and digital versatile discs (DVDs) ...