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.
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Showing 1 to 20 of 287 for “"Chemical Structure"”.
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ChemWARD : extracting chemical structure from printed diagrams
… because text can't easily indicate molecular structure, and molecular structure defines chemical properties. ChemWARD is a system that extracts the molecular structure from the printed diagrams that are ubiquitous in chemistry literature and converts them to a machine readable format in order …
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Effect of chemical structure on rocket fuel impulse
… Institute of Technology, Dept. of Chemical Engineering, 1951.
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An Investigation of the Chemical Structure of the Tobacco Necrosis Virus
Made available in DSpace on 2015-05-13T22:12:03Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7000910.PDF: 3745751 bytes, checksum: 6d9c2ffad15f980aa6837889edbca6ae (MD5) Previous issue date: 1969
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Effect of Antibiotic Pastes on Chemical Structure and Microhardness of Radicular Dentin
… of 1 g/mL and 1 mg/mL, on the microhardness and chemical structure of radicular dentin. Materials and Methods: Roots from extracted, unrestored, non-carious human premolar teeth were sectioned. An antibiotic paste (MTAP or TAP) or sterile water (control) was applied to treatment groups and stored …
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The chemical structure and mechanical properties of phenolic resins and related polymers
… made to assess certain features of the resin structure in terms of thermomechanical properties. The number of crosslinks in the system was controlled using resins based on phenol and para-cresol formulations. Intramolecular hydrogen bonding effects were examined using substituted resins and a …
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The correlation of chemical structure to tribological properties of polyimide thin films
… behavior of three thin polyimide films of known chemical structure was tested. An attempt was made to correlate differences in chemical structure, primarily the presence of flexible linkages and highly polar side groups, to differences in tribological properties. The wear test results showed …
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Organic phosphorus in marine sediments : chemical structure, diagenetic alteration, and mechanisms of preservation
… given the inherent lability of primary Porg biochemicals, it is a puzzle that any Porg is preserved in marine sediments. The goal of this thesis was to address this apparent paradox by linking bulk and molecular-level Porg information. A newly-developed sequential extraction method, which …
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The Bulk and Interfacial Electronic and Chemical Structure of Amorphous Hydrogenated Boron Carbide
The chemical and electronic structure, as related to the surface, interface and bulk of amorphous hydrogenated boron carbide (a-BxC:Hy), is of interest in neutron detection and microelectronics. This dissertation investigates the chemical and electronic structure of semiconducting thin-film …
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Organic phosphorus in marine sediments : chemical structure, diagenetic alteration, and mechanisms of preservation
… given the inherent lability of primary Prog biochemicals, it is a puzzle that any Porg is preserved in marine sediments. The goal of this thesis was to address this apparent paradox by linking bulk and molecular-level Porg information. A newly-developed sequential extraction method, which …
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The relationship of chemical structure and plant growth regulator activity in idol-3-ylacetamides
Thesis (M.S.)--Michigan State University. Dept. of Biochemistry, 1971
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High molecular weight (HMW) dissolved organic matter (DOM) in seawater : chemical structure, sources and cycling
… coupled with molecular level analyses to chemically characterize high molecular weight (> 1 k Da (HMW)) dissolved organic matter (DOM) isolated from seawater in an attempt to provide new insights in to the cycling of DOM in the ocean. While a variety of sites spanning different …
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Chemical Structure - Nonlinear Optical Property Relationships For A Series Of Two-photon Absorbing Fluorene Molecules
… interesting since they possess high photochemical stability for organic molecules and are generally strongly fluorescent. By systematically altering the structural properties in a series of fluorenyl molecules, we have determined how these changes affect their two-photon absorbing …
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High molecular weight (HMW) dissolved organic matter (DOM) in seawater : chemical structure, dources and cycling
… coupled with molecular level analyses to chemically characterize high molecular weight (> 1 k Da (HMW)) dissolved organic matter (DOM) isolated from seawater in an attempt to provide new insights in to the cycling of DOM in the ocean. While a variety of sites spanning different …
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Organic matter structural changes during catagenesis : implications of kerogen chemical structure on petroleum yield and composition.
… composition. A unique comparison between the chemical changes of fresh algae and preserved algae in black shales during catagenesis, elucidated structural changes of organic matter during preservation and differences between biofuel feedstocks and geologic sediments during catagenesis. …
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Effect of chemical structure and crosslinking density on the thermo-mechanical properties and toughness of (meth)acrylate shape-memory polymer networks
… of this work is to characterize and understand structure- mechanical property relationships in (meth)acrylate networks. The networks are synthesized from mono-functional (meth)acrylates with systematically varying sidegroup structure and multi-functional crosslinkers with varying mole fraction …
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The Impact of Lipid Nanoparticle Chemistry on RNA Delivery and Therapeutic Outcomes
… with modulated hydrophobic domains. The chemical structure of the hydrophobic domain did not impact the formulation of 5A2-SC8 LNPs, including nanoparticle size, RNA encapsulation, and stability. However, the chemical structure did affect RNA delivery efficacy both in vitro and in vivo. …
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Cheminformatics for genome-scale metabolic reconstructions
… both a system and component level view of the biochemical transformations of metabolites. As more reconstructions have been created it remains a challenge to integrate and reason about their contents. This thesis focuses on the development of computational methods to allow on-demand comparison and …
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Polyelectrolyte Coatings with Internal Hierarchy
… layer-by-layer (LbL) deposition method (lateral chemical structure), the adsorption of supramolecular aggregates (lateral topographycal structure), or the combination of both. Using these techniques, one can control the properties of the coatings by varying the chemical structure of the …
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Characterization of Poly(ethyleneimines) by Electrohydrodynamic Ionization Mass Spectrometry and Investigations of the Mechanism of Surfactant-Sensitization of Metal-Chrome Azurol S Complexes (Sampling, Transport, Spectroscopy, Micelle)
… Spectrometry to determine the effect of both the chemical structure and the solution chemistry of the polymer on its sampling behavior from glycerol.
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First step in the design and realisation of a 'smart' switchable surface
… to obtain a better understanding of the possible chemical interactions involved, different portions of the surface have been studied separately on a simpler system (Figure 1c). Figure 1 a) Cartoon image showing the opening of the positively charged double armed system when a negative voltage is …
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