etd AT Indian Institute of Science: Recent submissions
Now showing items 841-860 of 8174
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Finite field computational techniques for exact solution of numerical problems
In this dissertation, we consider the application of residue arithmetic for the exact computation of g-inverses in order to obviate the round-off errors normally associated with their computation. It turns out that for ... -
Secondary flows and heat transfer in non-newtonian fluids
The thesis consists of four chapters. In chapter I we have described the non-Newtonian fluids which we have discussed in the text and have also derived the equations of motion in the systems of coordinates which we have ... -
Stability and allied problems in magnetohydrodynamics
We note that the expressions (1.20)�(1.27) are real for all real values of the angular momentum MMM. In the numerical computations, we fixed V0V_0V0? and MMM, then obtained the values of (r,z)(r, z)(r,z) from the given ... -
Some magneto-hydrodynamical problems with an application to astoronomy
Part A: A steady flow with the effect of a controlling field of low conductivity past a rotating cylindrical surface in the case of a dissipative medium and its corresponding flow past a magnetized sphere. Part B: The ... -
Mathematical models of some physiological system
This thesis presents some theoretical investigations on certain problems concerning the respiratory, excretory, and circulatory systems in human physiology, from a fluid mechanics point of view. It consists of an introductory ... -
Hydromagnetic surface waves
The ASW propagates as a dispersive wave along the boundaries of a bounded plasma column. At the interface of a plasma slab surrounded by two identical plasma media, two modes-symmetric and asymmetric-propagate with a phase ... -
Nega-base computer arithemetic-theory and applications
This dissertation presents a detailed study of negative base number representation—the theory as well as the development of suitable algorithms for building the arithmetic unit of a digital computer. The idea of negative ... -
Some flow and heat transfer problems with special reference to numerical procedures
This thesis deals with elegant application of certain known mathematical methods and with certain numerical procedures devised to obtain solutions of the differential equations arising in the flow and heat transfer ... -
The Reactions of Coordinated ligands - A STU D Y O F THE REACTIVITY OF CO O R D IN ATED β-Diketones, β-Ketoimines, and Thio-β-Diketones
Reactions of some Schiff-base complexes of diacetoxy boron with phenylisocyanate and nitrosating reagents have been investigated. Phenylisocyanation produces phenylamido-substituted derivatives by electrophilic attack by ... -
Theory of electrochemical phase formation
In underpotential deposition (UPD), as in other examples of ECPF, many basic questions are yet unresolved. One such question is: Does UPD involve adsorption or phase transition Despite varied experimental observations, ... -
Studies on perovskite type rare earth transition metal oxides as oxidation catalysts
The introductory chapter begins with a classification of the thermal decomposition of solids, followed by a brief account of the decomposition of simple and complex oxalates as well as complex nitrites. The salient features ... -
Reactivity of metastable solids to heat
The thesis embodies investigations on the thermal decomposition of barium azide and the thermal decomposition and sublimation of ammonium perchlorate (AP). A lot of work has been done on the thermal decomposition of these ... -
Studies in structural chemistry - Dipole moments in relation to molecular structure
The dipole moments of p-chlorophenyldichlorophosphine (2.28 D) and p-bromophenyldichlorophosphine (2.04 D) have been determined in benzene at 35 °C. Applying the method of Smith et al., the formal charge distribution in ... -
Potentiometric and spectrometric investigations of cobalt (II) - Ethanolamine (mono, di and tri) complexes
A detailed potentiometric and spectrophotometric investigation of cobalt-ethanolamine (mono-, di- and tri-) complexes has been made. Potentiometric investigations have been carried out at various metal ion concentrations ... -
Oxidation reduction studies in non-aqeous media
This thesis embodies the results of the investigations on the oxidation-reduction behaviour of two typical redox couples in non~aqueous media. The redox systems chosen for the studies are (i) Copper(II) - Copper(l) ... -
Studies in solid state chemistry : Polymorphic transformations of titanium dioxide
The kinetics and energetics of the transformation of pure anatase (tetragonal) to rutile (tetragonal) have been studied. The rate data fit a first-order rate equation, and the activation energy is approximately 90 kcal·mol?¹. ... -
Studies in phase rule
A brief introduction to the subject of heterogeneous salt systems has been given in Chapter I of the thesis, with particular reference to those involving two salts possessing a common ion, in and without the presence of ... -
Molecular conformation and electronic structure of compounds related to amides & thioamides - a study by ab initio & semiemperical molecular orbital methods
The molecular conformation of amide derivatives is of paramount importance in understanding the factors which govern the conformations of peptides and proteins. A study of the barriers to internal rotation aids in ... -
Basic studies on electromechanical power sources - Voltage transients, alternating current impedance and steady state discharge characteristics of magnesium-manganese dioxide dry cells and supplementary investigation on titanium-substrate cobalt oxide and magnetite anode development for electrosynthesis
The extended shelf life of high-energy primary batteries based on lithium, magnesium, and aluminum is primarily attributed to the presence of a protective passive film on the surface of the reactive metal anode. Evaluating ... -
Low-temperature preparatioin and characterization of the perovskite lanthanide chromites and related oxides
The thermal decomposition of lanthanum biscitrato chromate(III) dihydrate was investigated in both static air and flowing argon atmospheres. The complex decomposes in four distinct steps, forming oxycarbonate and ...