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Now showing items 6179-6198 of 6421
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Ultrafast Raman Loss Spectroscopic Investigations of Excited State Structural Dynamics of Bis(phenylethynyl)benzene and trans-Stilbene
(2018-05-25)The subject of this thesis is the design and development of a unified set up for femtosecond transient absorption and ultrafast Raman loss spectroscopy and demonstrate its potential in capturing the ultrafast photophysical ... -
Ultrafast Raman Loss Spectroscopy (URLS)
(2015-02-05)Contemporary laser research involves the development of spectroscopic techniques to understand the microscopic structural aspects of a simple molecular system in chemical and materials to more complex biological systems ... -
Ultrafast Raman Loss Spectroscopy (URLS) : Understanding Resonant Excitation Response And Linewidth Changes
(2016-02-25)Raman spectroscopy involves change in the polarizability of the molecular system on excitation and is based on scattering process. Spontaneous Raman scattering is a two photon process, in which the input light initiates ... -
Ultrafast Response And Time Resolved Spectroscopy Of Carbon Nanotubes, Semiconductors And Rare-Earth Titanates Using Femtosecond Laser Pulses
(2013-10-21)In this thesis, experimental studies are reported of ultrafast dynamics and third order optical nonlinear coefficients of carbon nanotubes, and time resolved coherent phonon dynamics of semiconductors and rare earth ... -
Ultrafast Study of Layered 3D Topological Insulators, Graphene-Gold Hybrid Plasmonic Nanostructure and Ultrathin Gold Nanowires
In a typical time-resolved pump-probe spectroscopy, ultrafast laser pulses (pulse width ~ 100 fs) are utilized to induce a perturbation in the material of study within a time much shorter than the characterisitic lifetime ... -
Ultrasonic Guided Wave Based Models, Devices and Methods for Integrated Structural Health Monitoring
(2018-01-31)Structural Health Monitoring (SHM) systems for future structures and vehicles would involve a process of damage identification and prediction of certain quantities of interest that concerns the function and safety. This ... -
Ultrasound Assisted Optical Elastography For Measurement Of Mechanical Properties Of Soft Tissue Mimicking Phantoms
(2009-03-03)This work describes the development of an optical probe for measuring movement of tissue particles deep inside which are loaded by an ultrasound remote palpation device. The principle of the method is that ultrasound force ... -
Ultrasound-Assisted Diffuse Correlation Spectroscopy : Recovery of Local Dynamics and Mechanical Properties in Soft Condensed Matter Materials
(2017-11-14)This thesis describes the development and applications of an extension of DWS which enables the recovery of ‘localized’ mechanical properties, in a specified region of a complex jelly-like object which is inhomogeneous, ... -
Ultrastrong coupling in a cavity-electromechanical device
Cavity optomechanics is a field that explores the interaction between light and motion of matter via radiation pressure force. Such systems mainly consist of an optical/microwave cavity coupled to a mechanical resonator. ... -
Ultrastructural and Molecular Analyses of the Unique Features of Cell Division in Mycobacterium Tuberculosis and Mycobacterium Smegmatis
(2018-04-13)The Mycobacterium genus contains major human pathogens, like Mycobacterium tuberculosis and Mycobacterium leprae, which are the causative agents of Tuberculosis and Leprosy, respectively. They have evolved as successful ... -
Ultrawideband and wide-angle scan antenna element and small active phased arrays
Wideband, wide-scan active phased arrays (APA) are widely used for multi-function radars, communication and electronic warfare. Although considerable research is available on the design and analysis of such antenna elements ... -
Uncertainty Analysis of Microwave Based Rainfall Estimates over a River Basin Using TRMM Orbital Data Products
(2018-01-11)Error characteristics associated with satellite-derived precipitation products are important for atmospheric and hydrological model data assimilation, forecasting, and climate diagnostic applications. This information also ... -
Uncertainty Based Damage Identification and Prediction of Long-Time Deformation in Concrete Structures
(2018-02-20)Uncertainties are present in the inverse analysis of damage identification with respect to the given measurements, mainly the modelling uncertainties and the measurement uncertainties. Modelling uncertainties occur due to ... -
Uncertainty modeling and analysis of aerospace structures
Aerospace structures are different from other structures due to the difference in the required properties for an aerospace application. The primary motivation of this kind of structure lies in its lightweight nature, ... -
Uncertainty Modeling For River Water Quality Control
(2010-08-30)Waste Load Allocation (WLA) in rivers refers to the determination of required pollutant fractional removal levels at a set of point sources of pollution to ensure that water quality standards are maintained throughout the ... -
Uncertainty Quantification in Flow and Flow Induced Structural Response
(2018-07-23)Response of flexible structures — such as cable-supported bridges and aircraft wings — is associated with a number of uncertainties in structural and flow parameters. This thesis is aimed at efficient uncertainty quantification ... -
Uncovering of a novel non-taxane anticancer secondary metabolite from Taxol-producing endophytic fungus: Optimization of culture parameters and whole-genome sequence analysis for improved taxane production biosynthesis.
Cancer-related mortalities and morbidities have proven to be a great health burden for human society with immense economic implications. With uncontrolled proliferation of cells as the fundamental principle underlying its ... -
Uncovering the Role of Mitochondrial Co-chaperones and Artificial Antioxidants in Cellular Redox Homeostasis
(2018-02-14)The role of mitochondria is multidimensional and ranges in vast areas, including apoptosis, cellular response towards stress, metabolism, which is regulated by a plethora of proteins, acting together to maintain cellular ... -
Uncovering the Role of Mitochondrial Iron-sulfur (Fe-S) Cluster Biogenesis in Human Health and Disease
(2018-09-04)Mitochondrial dysfunction has been implicated for a wide range of human diseases. One of the major biosynthetic processes in human mitochondria is the biogenesis of Iron-Sulfur (Fe-S) clusters which primarily involves in ...