etd AT Indian Institute of Science: Recent submissions
Now showing items 2201-2220 of 6964
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Impact of Atmospheric Aerosols on Free-Space Optical Communication Systems
Free–space optical (FSO) communication is a wireless technology with an unguided laser signal carrying a large volume of data through the atmosphere. Numerous advantages such as higher bandwidth, high security, easy ... -
Structural and magnetic properties of Al-doped yttrium iron aluminum garnet and optical properties of Mn, Sr, Fe-doped ZnO prepared by solution combustion method
The structural and magnetic properties of Al substituted yttrium-iron garnet (Y3AlxFe5-xO12, x = 0, 0.1, 0.2, 0.3, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6 and 1.8) ceramic powders synthesized using solution combustion method ... -
Investigations on Five Level Inverter Schemes for Extending the Linear Modulation Range for Induction Motor Drives
Multilevel inverters (MLI) are the most preferable alternatives for medium to high voltage applications. It finds in many applications like traction drives, fans, blowers, HVDC and FACTs etc. It offers many attractive ... -
Steady state properties of discrete and continuous models of nonequilibrium phenomena
The understanding of nonequilibrium phenomena, of fundamental importance in statistical physics, has great implications for many physical, chemical, and biological systems. Such phenomena are observed almost everywhere ... -
Untangling the Helicobacter pylori genome: Deciphering the significance of zinc finger motif(s) in Topoisomerase I catalysis
Helicobacter pylori, a human pathogen dominating gastric microbial population, displays differential gene expression during various stages of stomach colonization. Topoisomerases play a crucial role in maintaining DNA ... -
Frequency and Temperature Dependent Mechanical Behavior of Three-Dimensional Cellular Structures of Graphene and Carbon Nanotubes: Role of Microscopic Interfacial Interaction
Three dimensional (3D) cellular structures with high mechanical strength and stability are recently proven to provide a crucial platform for multifunctional application in various fields namely biomedical, soft robotics, ... -
Thermal and Femtosecond Laser-Induced CO2-Surface Chemistry on Supported Iron-Oxide Based Nanoparticle Surfaces under UHV
The thesis has been presented in two parts. The 1st part of the thesis focuses on the fundamental understanding of room temperature CO2 adsorption on iron-oxide based NP surfaces. The 2nd part describes the understanding ... -
A Divide and Conquer Framework For Graph Processing in Distributed Heterogeneous Systems
In many fields of science and engineering graph data structures are used to represent real-world information. As these graphs scale in size, it becomes very inefficient to process these graphs on a single core CPU using ... -
Establishment of human ectopic liver tissue in immunocompromised mice as a model for Hepatitis C Virus studies
Infection with hepatitis C virus (HCV) leads to an inflammatory condition which may progress to liver cirrhosis and in some cases, hepato-cellular carcinoma. Though, new drugs are being added to the list of HCV therapeutics, ... -
Application of Semi Analytical Methods for Large Power System Simulations
Power system dynamics can be accurately modelled in time domain by using nonlinear differential and algebraic equations (DAEs). The challenge lies in solving the large number of nonlinear DAEs faster than real-time in order ... -
Immunomodulatory effects of 7-hydroxy frullanolide, a plant-based sesquiterpene lactone, in inhibiting immune cell responses and roles of disease and vaccination outcomes on Covid-19 mortality
Immunomodulation is a process by which the immune response of the host is either enhanced or suppressed due to various factors which either protects or makes the host more susceptible to particular diseases. Immunomodulators ... -
Trace Estimate For The Determinant Operator And K- Homogeneous Operators
Let $\boldsymbol T=(T_1, \ldots , T_d)$ be a $d$- tuple of commuting operators on a Hilbert space $\mathcal H$. Assume that $\boldsymbol T$ is hyponormal, that is, $\big [\!\!\big [ \boldsymbol T^*, \boldsymbol T \big ]\!\! ... -
Entanglement-assisted Additive Qudit Stabilizer Codes
Quantum systems governed by the laws of quantum mechanics are the most awaited technology of this century. Based on the shrinkage in the size of the devices over the years in classical systems, device sizes are expected ... -
Structure, Thermodynamics and Dynamics in Complex Systems: From Stability of Biomolecules to Phase Transitions in Polymorphic Ice
This thesis deals with the understanding of the structure, dynamics and thermodynamics in complex systems (proteins, hydration layers, DNA, ice polymorphs) by employing computer simulations, theoretical analysis, and in ... -
Catalytic Asymmetric Direct and Vinylogous Aldol, Michael and Alkylation Reactions
Pyrazoles and pyrazolones are a highly explored and privileged class of aza-heterocycles with a wide range of applications, thereby rendering a recurring interest in their synthesis and functionalization. Majority of the ... -
Single Phase Grid Connected Converter using Active Power Decoupler with Harmonic Control
The single phase converters are inherently exposed to the pulsating power. The conventional approach to supply this pulsating power is to use a huge Electrolytic capacitor. However, Electrolytic capacitors with high ... -
A molecular systems approach to unravel mechanisms and targets in antifolate-resistant bacteria and cancers
Antifolates such as trimethoprim (TMP) and methotrexate (MTX) widely used for treating bacterial infections and certain cancers respectively, inhibit dihydrofolate reductase (DHFR) in the folate pathway. However, the use ... -
Understanding the influence of electric field and dual doping on cytocompatibility of calcium phosphate bioceramics: Experimental and computational study
Although doped bioceramics have been widely investigated for biomedical applications, the co-doped bioceramics remain mostly unexplored for bone regeneration and dental applications. Given this background, we have successfully ... -
Investigating the redox signaling mechanisms during HIV-TB co-infection
Oxidative stress has been at the forefront of HIV/AIDS-related pathophysiologies since the early days of its discovery. Overcoming HIV-1 latency, wherein, the virus remains integrated in the host chromatin, undetected and ... -
Optimization of parameters in SiC production via Acheson Process – a hot model study
Silicon carbide (SiC) is produced industrially in a heat resistance furnace using quartz (silica) and raw petroleum coke (RPC) as the raw material. In this process, commonly known as the Acheson Process, a large current ...