etd AT Indian Institute of Science: Recent submissions
Now showing items 1401-1420 of 9466
-
Binding of 9-N-butyladenine with carboxylic acids : Studies on the watson-crick vs. Hoogsteen selectivity
It’s been shown that if the carboxylic group of the acid is in resonance with the adjacent R group, a net preference for the HG site is observed. If the resonance is disrupted in case of aromatic acids by tilting the plane ... -
Factors influencing the chemical shift a case study with a, a,-DI-tert butylthioaceric esters
The assignment of structures to two forms of ?,? di tert butylthioacetic esters, detected by NMR, is the subject matter of this thesis entitled “Factors Influencing the Chemical Shift - A Case Study with ?,? Di tert ... -
Effect of flexible exit on vortex-pair generation
In the present work, we study experimentally the effect of flexible exit on vortex?pair generation. Vortex rings are frequently observed flow phenomena and have often been associated with unsteady starting jets issuing out ... -
Studies on sonoluminescence in the form of resonance radiation
Recent studies have shown that measured flash width from single and multibubble sonoluminescence are in the subnanosecond or even picosecond regime. Here we provide conclusive experimental evidence for the existence of ... -
Transient vibrations of one and two degree of freedon non-linear systems
This thesis is devoted to the study of transient vibrations of non-linear systems, with emphasis on two degree?of?freedom systems. After a résumé of the free and forced response of non-linear two degree?of?freedom systems, ... -
Dynamic viscosity of gas mixtures
An oscillating disc viscometer was designed and calibrated for the determination of viscosity of gases and gas mixtures at room temperature and pressure. The viscosity of oxygen, carbon dioxide and air were determined at ... -
Laminar buoyancy - induced flows and transport processes in stratified media
Buoyancy?induced flows in a density?stratified environment occur in a wide variety of engineering systems and in nature. Some of these are crystal growth processes, solar ponds, deep ocean power modules, environmental ... -
studies on silica and zircon sands bonded with silicate - ester systems
Introduction Cold-set processes have revolutionized mould and core-making techniques and have led to a reduced need for skilled labour. Chemical binders have made steady progress in the production of moulds and cores for ... -
Role of Queuosine in Codon-Anticodon Interaction
The speed and accuracy of the process of protein synthesis is very high. The major step at which the fidelity of translation is governed is at the step of codon?anticodon pairing. An erroneous codon?anticodon pairing can ... -
Purification and characterization of DNA-dependent RNA polymerase II from candida utilis
Abstract not available -
Importance of formylation in eubacterial translation initiation
Initiation of protein synthesis in all organisms occurs with the amino acid methionine. In the case of eubacteria and eukaryotic organelles, methionine is further modified to formylmethionine by the enzyme methionyl?tRNA ... -
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 ...