Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 56 for “"structural heterogeneity"”.
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Structural heterogeneity and conformational relaxation in heme proteins
The influence of cooling rate upon the structural heterogeneity of sperm whale myoglobin solutions at cryogenic temperatures was studied. Sample cooling rates were varied by almost four orders of magnitude. FTIR spectra of the CO stretch frequency region reveal that the population of the A states …
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Structural Heterogeneity in the Lipopolysaccharide of Salmonella Newington (Wild Type)
Made available in DSpace on 2014-12-10T23:24:29Z (GMT). No. of bitstreams: 1 7317634.pdf: 5723759 bytes, checksum: db87ae8b984b1c7da309b1387adf7aa6 (MD5) Previous issue date: 1973
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Regional macroeconomic dynamics in Britain: Investigating structural heterogeneity in transmission of shocks
… the British regions. It reports the existence of heterogeneity in British regional macrodynamics and furthermore demonstrates, through three related research programmes, for the first time how differences in short run and long run dynamics of the regions are related to structural factors …
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Detection of RNA structural heterogeneity : computational analysis and development of web-based tool
… to the population average, which obscures structural heterogeneity. This thesis addresses the problem of inferring structural heterogeneity from dimethyl sulphate (DMS) probing data. First, we analysed sequence data to uncover experimental biases and developed simulations for sample …
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Structural heterogeneity in silk fibers and its effects on failure mechanics and supercontraction
… However, it is not fully understood how the heterogeneity of silk affects its mechanical properties. First, the origin of the nanoscale heterogeneity during the Nephila Clavipes dragline silk assembly is investigated. Using molecular dynamics simulations, a shear flow at natural pulling …
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Phase transformations in highly electrostrictive and magnetostrictive crystals: structural heterogeneity and history dependent phase stability
… materials systems have chemical disorders and structural inhomogeneity on a microscale, giving rise to an interesting diversity of crystal structures and novel macroscopic physical properties, which are dependent on thermal and electrical histories of the crystals. In this thesis, I have to …
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Effects of Chemical and Structural Heterogeneity on the Tribocorrosion Resistance of Metals in Aqueous Solutions
… this work, strategies to introduce chemical and structural heterogeneity with controlled length-scale at nanometers were proposed and studied in three metallic systems (i.e., Zr-based, Al-based and Mg-based), in order to enhance their tribocorrosion resistance. In the first study, ZrCuNiAl thin …
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Origami-inspired mechanical metamaterials
… how disrupting flat-foldability, by introducing structural heterogeneity, can lead to performance enhancements while preserving the advantages of origami folding kinematics. Three distinct research phases are structured in this thesis. First, heterogeneous geometries are created by combining flat …
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Relationships between loblolly pine (Pinus taeda L.) yield and woody plant diversity in Virginia Piedmont plantations
… of oak and hickory species and reduced canopy structural heterogeneity, but increased proportions of other fruit bearing plant species, and increased deer browse availability and ground stratum heterogeneity. In plantations 24-27 years, competition control altered plant species composition and …
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Characterization and control of biofilm and biofluid microstructure and rheology
… how environments or treatments can change the structural features of a biofilm and also to expand the knowledge of structural heterogeneity they possess. A literature review on structural heterogeneity in different systems of biofluids summarises current knowledge in the field. The first part …
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Biochemistry of the uterus studied by magnetic resonance techniques
… investigate the relation between biochemical and structural heterogeneity in normal and abnormal uterus using high resolution $\sp{31}$P magnetic resonance spectroscopy ($\sp{31}$P MRS); (2) evaluate SLIM in the above study; and (3) apply water DWI to the study of uterine endocrinology.
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Mapping of elastic modulus and hardness in Trochus niloticus seashell nacre by nanoindentation
… may point to a direct correlation between structural heterogeneity and the properties distribution.
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Using Deep Learning to Understand and Design Heterogeneous Materials
… the importance of precisely controlling material heterogeneity, establishing it as a pivotal component of materials science and engineering. From a compositional standpoint, the materials-by-design paradigm incorporates multiple constituent phases to combine strengths of each individual …
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Modeling Genome Organization in Eukaryotic and Prokaryotic Cells Using Folding Determinant Interactions
… insulation scores, while also accounting for the structural heterogeneity observed in single-cell imaging. For Escherichia coli, I extend this approach to its circular chromosome by integrating Hi-C data. The analysis reveals how Ori/Ter asymmetry, macrodomains, and supercoiling-sensitive regions …
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Coupling Raman spectroscopy and scanning electrochemical microscopy for spectroelectrochemical analysis of electrode interfaces
Structural heterogeneity of an electrode interface causes variation in the reactivity across the electrochemically active surface. Bulk electrochemical measurements are unable to parse out the contributions to different structural motifs and how they affect surface processes, leaving the spatial …
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Shockwave energy dissipation by mechanoresponsive materials
… of energy dissipation by shock-induced microstructural changes and chemical reactions is investigated. In a series of network-forming ionic liquids (NILs) synthesized, each NIL possesses a different nano-scale structure consisting of charged clusters and alkyl domains. Irreversible …
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Glycosaminoglycan-protein interactions : the fibroblast growth factor paradigm
… in the HSGAG-protein interactions stems from the structural heterogeneity of HSGAGs, which are highly acidic biopolymers associated on the cell surface and in the extracellular matrix. It is believed that structural specificity in the HSGAG-protein interactions determines the biological functions …
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Machine Learning for Reconstructing Dynamic Protein Structures from Cryo-EM Images
… is an extraordinarily challenging task in structural biology. This thesis presents new algorithms that address the computational bottlenecks at the frontier of structure determination of dynamic biomolecular complexes via cryo-electron microscopy (cryo-EM). In single particle cryo-EM, the …
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Targeting RNA Structures with Multivalent Branched Peptide Libraries
… design of small molecular ligands because of its structural heterogeneity and conformational flexibility. Yet, the highly folded tertiary structures of these oligomers present unique scaffolds which designed ligands should be able to selectively target. To that end, two branched peptide libraries …
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Metal And Metal Oxide Nanocrystals For Catalysis And Magnetic Applications
… NCs could potentially overcome the traditional structural heterogeneity observed in conventional synthetic methods and open up new opportunities in systematic studies of their catalytic activity and magnetic properties. In this work, we focus on exploiting the composition- and crystal …
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