etd AT Indian Institute of Science: Recent submissions
Now showing items 1-20 of 9078
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Microwave synthesis and consolidation of advanced ceramics and ceramic composites
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Morphological and biochemical studies on some yeasts and fungi
The morphological and biochemical studies of the penicillin producing fungi are described; single spore isolations have been made, methods of assay of the antibiotic are described. An attempt is made to correlate the ... -
Polarization rotation properties of twisted uniaxial anisotropic medium
In certain microwave applications, it is required to rotate the plane of polarization of a linearly polarized wave or beam by some desired angle relative to a fixed antenna or waveguide feed. Hence we study Polarization ... -
New approaches to improved detection and tracking performance in radars
The purpose of a Track While Scan (TWS) radar system is to detect, locate and track the various targets under its surveillance in the presence of interfering echoes. In the conventional approaches, the two basic functions ... -
Spectroscopic studies on polymerized and doped fullerenes and pressure induced phase transition in BaTiO3
In conclusion, we have observed pressure induced polymerization in the case of C but not in C . This calls for detailed theoretical analysis, incorporating the changes in electronic structure with the application of ... -
Investigations of electroporation physics using optically transparent polymer devices and molecular dynamics simulation
New technologies have emerged in the medical field over the last decade to treat problems such as cancer and tumors. Electroporation is one such technique that has been extensively used in electrochemotherapy, drug delivery, ... -
Bulk and thin growth of pure and substitued indium antimonide for infrared detector applications
InSb single crystals were grown by the vertical and horizontal Bridgman techniques. About 81 experimental runs were carried out altogether (for 8 mm, 10 mm and 20 mm diameter InSb crystals). Among them, as many as 47 runs ... -
Biosynthesis of indole alkaloids in the higher plant catharanthus roseus : is cytochrome b5 system involved in the cytochrome p-450 mediated geraniol hydrixylation
Biosynthesis of Indole Alkaloids in the Higher Plant Catharanthus roseus: Is Cytochrome b System Involved in the Cytochrome P 450–Mediated Geraniol Hydroxylation ” Indole alkaloids belong to a large family of structurally ... -
Stereochemical investigations in chiral etyhl esters
The thesis entitled “Stereochemical Investigations in Chiral Ethyl Esters” attempts to interpret differences in the magnitudes of anisochrony of the O methylene protons of ethyl ester groups located in various chiral ... -
Utility of microbes in organic synthesis : (i) Selective transformations of acyclic terpenes and (ii) Purification and characteriation of a novel secondary alchohol dehydrogenase
Exploration of microbes in carrying out transformations of natural products has been an important and fascinating method in synthetic organic chemistry. Microbes offer the opportunity to effect selective transformations-a ... -
Topics in amine chemistry
The thesis entitled “Topics in Amine Chemistry” is in three parts-A, B and C-as well as an Appendix. Part A describes, in two chapters, the development of an alternative to Gabriel’s amine synthesis based on the chemistry ... -
studies in terpenoids and lachnanthocarpones
The thesis entitled “Synthetic Studies in Terpenoids and Lachnanthocarpones” is divided into two parts and consists of five chapters. Chapters 1–3 constitute Part I, and Chapters 4–5 are included in Part II. Chapter 1 The ... -
Topics in organic stereochemistry : studies in optical resolutions
The thesis entitled “Topics in Organic Stereochemistry: Studies in Optical Resolutions” describes, in four chapters, investigations aimed at: (i) developing methodologies for the resolution of racemic alcohols both kinetically ... -
studies in terpenoids and vilsmeir formylation on some
The thesis entitled “Synthetic Studies in Terpenoids and Vilsmeier Formylation on Some Hydronaphthalene Systems” consists of five chapters dealing with: a review, for the first time, of the chemistry of vetivalene type ... -
Investigation towards the total synthesis of b-secosteroids
The thesis entitled “Investigations Towards the Total Synthesis of B Secosteroids” consists of two parts. Part I describes: the synthesis of a few mono and dimethoxy 5/8 seco 5/7 bisnor steroids (Chapter I), and a study ... -
Studies in natural products,Pt.1 & 2
Part I: Investigations on the Essential Oil of Ageratum conyzoides After briefly surveying the earlier work carried out on the essential oil of Ageratum conyzoides, the present investigation on this oil has been described. ... -
Catalytic Organic Transformations with nanostructured metals, alloys and metal Oxides, mesoporous MCM-41 supported metal oxide and Organic-inorganic hybrid materials
Chapter 1 Chapter 1 presents a general introduction to porous materials and, in particular, mesoporous materials. The mechanism of formation of MCM 41 involves supramolecular self assembly of surfactants (e.g., CTAB). ... -
Part-1: Studies in Sesquiterpenses. Part- Organic reractions with Polyphosphoric Acid
Abstract not available -
Low-pressure mocvd of oxide dielectrics : a study of their growth, microstructure, and properties
Abstract not available