etd AT Indian Institute of Science: Recent submissions
Now showing items 161-180 of 8174
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Physico-chemical investigations on rare earth compounds
The work on the hydrolysis of lanthanum ion described in this thesis has revealed the existence of the following hydroxy complexes: LaOH²?, La(OH)??, La?OH³? and La?OH??. The various reactions that occur in this system ... -
Studies on the chemical behaviour of elemental sulphur and some of its compounds
The present investigation, the hydrolytic reactions of elemental sulphur, heptasulphurimide, tetrasulphur tetraimide, tetrasulphur tetranitride, dimethyl and diethyl thiosulphites, tetraethyl dithiodiamine, dithiopiperidine, ... -
Studies in the chemical behaviour of sulphur compounds (disulphur monoxide)
Earlier observations made by several workers in the field indicated that a small amount of lower oxide of sulphur could be prepared when sulphur was slowly oxidised by air at normal pressure. The yield of the lower oxide ... -
Potentiometric and spectrophotometric Investigations of Nickle Complexes
1. Nature of mononuclear complexes in nickel ethanolamine systems The work presented in this thesis indicates that nickel forms six complexes, NiA? to NiA?²?. In this respect nickel–monoethanolamine complexes resemble ... -
Thermal decomposition studies on the oxalates of lanthanum cerium and thorium
The thermal decomposition of the hydrated oxalates of lanthanum, cerium and thorium have been studied by (i) thermogravimetry, (ii) differential thermal analysis, (iii) vapour pressure measurements and (iv) vacuum decomposition ... -
Studies in structural chemistry
The molar refractions of the rare earth nitrates, the ionic refractions and the polarizabilities of the trivalent rare earth ions decrease from lanthanum to ytterbium with a break at gadolinium, as a consequence of lanthanide ... -
Studies on wavefront estimation and refraction corrected image reconstruction in optical tomography
In this thesis we report the development of two experimental phase measurement techniques for application in optical tomography and the modifications of the existing inversion algorithms for reconstructing the refractive ... -
System development for a fourier transform ion cyclotron resonance mass spectrometer
Abstract not available -
Fast adaptive multipole-algorithm for scattering from inhomogeneous dielectric cylinders of arbitrary cross-section
The work reported in this thesis is concerned with the rapid solution of electromagnetic scattering problems involving inhomogeneous dielectric cylinders of arbitrary cross?section. In particular, attention is focused on ... -
Coaxial triggered vacum gap : switching and delay characteristics
Vacuum is an excellent insulator, albeit has a poorly defined intrinsic electric breakdown strength. Because of this, the ordinary vacuum gap with only two electrodes is unsuitable for switching applications. The electric ... -
Electrical breakdown and post breakdown studies in sodium vapour using coxial; cylilndrical electrode configuration
The advancing technology of power circuit breakers has led the way for the study of arcs in gas?filled as well as vacuum circuit breakers. The spectroscopic investigations of such arcs have clearly shown the presence of ... -
Pressure gradient flow electrical conduction in polar liquids
Polar liquids like nitro-, chloro- and bromobenzenes find possible applications in electrostatic generators, impulse voltmeters etc. In this work natural conduction in these liquids has been studied at electric fields of ... -
Electrical discharges in mercury vapour in a magnetic field
Langmuir probe method is applied to determine the n? and T? of a low-density, collisional plasma in mercury vapour under moderate magnetic field strengths. The charge density evaluated by Bohm's method and the orbital ... -
Studies on thermo-resistant bacilli
A beginning was made in this country in the systematic study of spore‑forming bacteria capable of growing at 55°C. Ninety‑five odd isolates were obtained from sources such as soils, water from hot springs, air, dust, and ... -
Some aspects of the origin and the structure of technical terms in science and literature
The thesis is a study of the origin and the structure of technical terms in literature, physics, chemistry, mathematics, and medicine. The study of origin includes not only the proportion of words and word-elements derived ... -
Learing automata algorithms for connectionist systems local and global convergence
Connectionist systems have been studied with much interest as models for the brain and also as systems which work in a parallel and distributed manner. These systems exhibit desirable properties such as learning capability ...