etd AT Indian Institute of Science: Recent submissions
Now showing items 321-340 of 8174
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Studies on synthetic methods
Conversion of amidomethyl function into aldehyde group Amidomethylated aromatic derivatives on treatment with N-bromosuccinimide produced the corresponding aromatic aldehydes in good yields. Attempted introduction of ... -
Studies in terpenns dyhydrogenation studies of abietic acid woth tetrachloro-o-Benzo quinone and a novel route
The thesis entitled "Studies in Terpenes - Dehydrogenation studies of abietic acid with tetrachloro-o-benzoquinone and a novel route to the synthesis of (I) methyl dehydroabietate and (II) methyl 13-methoxydeisopropyldeh ... -
Studies on black damar
The work embodied in this thesis has been broadly classified into four chapters. Chapter I contains a short introduction to the natural resins and resin oils, briefly summarizing their history and romantic establishment ... -
Supramolecular assemblies of bile acid derivatives
In the early literature, self-associative behaviors of bile acids and bile acid salts were known. Owing to their amphiphilic nature, bile acids can form supramolecular self-assemblies in the form of micelles, helical ... -
Structure andinteractions of polyamines
Polyamines are ubiquitous biological cations. Their high concentration in cells, increase in rapidly growing tissues and the regulatory mechanisms that have evolved for controlling them, point to the importance of polyamines ... -
Conformational analysis of cyclic peptides containing Cis peptide units
The dimensions of the cis peptide unit obtained as an average from the three sets of data viz., cyclic di-, higher, and tripeptides are summarized in Table 2.11. On a close examination of the Table, the following salient ... -
Conformational studies on peptides containing alpha aminoisobutyric acid and polypeptides with alternating LD-Sequences
The results of semiempirical energy calculations on poly(Aib), varying ACO and ?(NC?C) separately and simultaneously, suggest a novel fourfold helical structure as an energetically favourable model for poly(Aib). This novel ... -
Optimal control and differential games in a Hilbert space
In this thesis, we study some aspects of optimal control and differential game problems in an infinite-dimensional Hilbert space. We mainly discuss the dynamic programming and viscosity solution approach to these problems. ... -
An investigation of the role of buoyancy in magnetic polarity transitions in rapidly rotating dynamos
The dynamo operating within the Earth’s outer core generates a predominantly north-south dipolar magnetic field. Occasionally, the magnetic dipole axis flips its orientation and retains its approximate alignment with the ... -
Studies on Advanced Soluble Lead Redox Flow Batteries: Concepts to Contexts
Redox flow batteries (RFBs) offer to make renewable energy storage more affordable, alongside accelerating opportunities for utility-scale development of solar/wind energy storage. Redox flow batteries (RFBs) have many ... -
RNA granules and DNA damage: Exploring the role of posttranscriptional gene control upon genotoxic stress
Cells constantly encounter genotoxic stress arising from extrinsic environmental factors or intrinsic metabolic byproducts. In response, cells activate a robust DNA damage response (DDR) network to preserve genomic stability. ... -
Application of least squares kinetic upwind method to strongly rotating viscous flows
The Least Squares Kinetic Upwind Method (LSKUM) is a node-based method. Ghosh and Deshpande, as well as Ramesh & Deshpande, have demonstrated that LSKUM works on any type of grid—structured, unstructured, Cartesian, Chimera, ... -
Numerical methods for non-homogeneous hyperbolic conservation laws
The numerical simulation of hyperbolic conservation equations has reached a level of maturity with the development of several efficient numerical methods in the past three decades. The same level of success is not present ... -
Some numerical studies on the airflow over mountains
A study of ‘Airflow over Mountains’ is carried out using a two-dimensional, stratified, time-dependent, nonlinear numerical model. Numerical experiments are conducted for high Froude numbers (Fr > 1) and low Froude numbers ... -
Mechanism of reversion in highly accerlerated turbulent boundary layers
This thesis consists of two related parts which are complementary to each other but can also be read independently. The first part is a study of the development of both the mean and fluctuating flow quantities in an initially ... -
Development of AlN based Piezo-MEMS Technology: Film Growth to Device and Application
Aluminum nitride (AlN) has emerged as an excellent material for a variety of MEMS applications owing to its unique combination of properties such as- low dielectric constant, strong polarity, low dielectric and acoustic ...