etd AT Indian Institute of Science: Recent submissions
Now showing items 121-140 of 8174
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Molecular characterisation of Saccharomyces cerevisiae Prp17protein and its interacting partners
In majority of eukaryotic genes, removal of intervening sequences from pre?mRNA is essential for its expression. A ribonucleoprotein complex called the spliceosome catalyses the removal of intron by two sequential ... -
X-ray crystallographic studies of amino acid-carboxylic acid complexes
The structure, assembly and action of proteins critically depend upon non?covalent interactions. A programme aimed at elucidating the atomic details of such interactions using an approach involving the preparation and X?ray ... -
Genome-wide and structural analyses of signalling proteins with special reference to protein kinases
The work done in the dissertation involves genome?wide sequence analysis on the Plasmodium falciparum proteins with a broad objective of understanding further the functional diversity and evolution. P. falciparum is one ... -
Exploration of some components of fatty acid biosynthesis in prokaryotes and eukaryotes : PANK of homo sapiens and fabl of plasmodium falciparum
Coenzyme A (CoA) is a central molecule that plays a key role in this process. In the course of this project, we have attempted to address some key questions that deal with an enzyme involved in CoA biosynthesis (Pantothenate ... -
Studies on ion sources and analysers for mass spectrometric analysis of solids
Abstract not available -
Development of an automated high pressure high temperature system for electrical studies
Abstract not available -
Design and fabrication of a twyman-green interferometer for photoelastic stress analysis
Interferometric methods of analysing photoelastic specimens are powerful techniques in stress analysis. Unlike the conventional photoelastic stress patterns, the patterns obtained from interferometers contain information ... -
Chemistry of hydrazine derivatives
The chemistry of hydrazine and its derivatives is of interest because of their use as rocket fuel, solid propellant oxidizers, explosives, antioxidants, insecticides, food preservatives, pharmaceuticals and materials for ... -
Kinetic studies on the interactions of gold (iii) with nucleic acids
The effects of the univalent ions like Li?, Na?, K?, Cs?, etc. and their counter ions on the CD spectra of various DNA samples have been investigated in some detail. With the increase in the concentration of the univalent ... -
Contributions to the chemistry of thiophosphoryl fluoride
The present status of knowledge about the chemistry of thiophosphoryl fluoride has been reviewed in the introductory chapter. Taking this background into consideration, a line of investigation has been undertaken which is ... -
Thermal studies on substituted ammonium and phosphonium perchlorates
The investigations described in this thesis have been aimed at contributing to the understanding of the thermal decomposition characteristics of some of the substituted ammonium and phosphonium perchlorates. The importance ... -
Electron diffraction studies of electro-deposits
The work described in this thesis has been directed towards the design and fabrication of an electron diffraction camera, and its use to study the dependence of the structure of electrodeposits upon electrochemical conditions ... -
Heterolytic Activation of the H-X (X=H,Si,B, and C) Bonds inSmall Molecules
The protonation reaction of trans-[Ru(H)(P(OMe)?)(dppe)?][OTf] 2.2 with HOTf led to the formation of 3 new dihydrogen complexes trans-[Ru(?²?H?)(P(OMe)???(OH)?)(dppe)?] (x = 0, 1, 2) which are characterized by their short ... -
Heterolytic activation of molecular hydrogen by transition metal complexes
New iron hydride complexes of the type trans-[(dppe)?Fe(H)(RCN)][BF?] (RCN = nitrile) with varying degree of ?-accepting ability of the nitrile moiety have been prepared and characterized. The protonation reactions of these ... -
Analysis and extraction of molecular hyperpolarizability from on and off resonance hyper-Rayleigh scattering measurements in solution : Ferrocenyl donor-organic acceptor and -(P=N)- linkage based donor acceptor molecules as case studies
Knowledge of accurate second?order nonlinearity or first hyperpolarizability (?) of organic and organometallic molecules is important in a variety of applications. The second?order response from a molecule in solution is ... -
Dynamics of I*(2p1/2) production in the UV photodissociationof alkyl iodides
The photodissociation dynamics of alkyl iodides in their A?band of absorption (arising from n ? ?* transition) has been of interest for dynamicists for the past three decades, starting from the pioneering work of Kasper ... -
Studies in the electro deposition of manganese
The investigations described in the thesis have been directed towards an understanding of the mechanism of electrodeposition of manganese from manganese sulphate–ammonium sulphate solutions and towards an elucidation of ... -
Aspects of the chemistry of copper(II) complexes having different nuclearity
Synopsis of the thesis entitled “Aspects of the chemistry of copper(II) complexes having different nuclearity” to be submitted by Mrs. K. Geetha under the supervision of Prof. A. R. Chakravarty of the Department of Inorganic ... -
Studies on the synthesis, structure and reactivity of amino and halo silanes
Tri(amino)silanes are generally prepared by the condensation route: HSiCl? + 6 R?NH ? HSi(NR?)? + 3 R?NH·HCl Even though these compounds have been extensively used both in industry and chemistry, only very little is known ...