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 18 of 18 for “"Chemistry Studies"”.
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Metals in Chemistry and Biology: Computational Chemistry Studies
… enzymatic reactions are controlled by the chemistry of metallic ions. This dissertation investigates the electronic properties of three transition metal (copper, chromium, and nickel) complexes and describes modeling studies performed on glutathione synthetase. (1) Copper nitrene complexes …
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Molecular Dynamics and Quantum Chemistry Studies of the Protein Bacteriorhodopsin
"Molecular dynamics (MD) simulations and Quantum Chemistry (QC) calculations are employed to study the structure and function of the protein bacteriorhodopsin (bR), a 26 kD protein which residues in the purple membrane of the bacterium Halobacterium halobium. Bacteriorhodopsin undergoes a …
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BWR coolant chemistry studies using a recirculating in-pile loop
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1995.
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The role of thiols in nitric oxide donor chemistry: Studies using product analysis and a novel proteomics technique.
The role of thiols in nitric oxide donor chemistry: Studies using product analysis and a novel proteomics technique.
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Polyoxomolybdates with emergent properties
Coordination chemistry especially of the transition metals is an important area of chemical research as it shows tremendous interdisciplinary relevance, e.g. for catalysis and for bioinorganic chemistry including even aspects of medicine regarding therapy as well as diagnosis. In this context, …
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A Phytochemical Analysis of Secondary Metabolites in Eupatorium Serotinum
<p>Phytochemistry, a subset of Natural Products Chemistry, studies chemically derived products from natural substances. Advances in this field have important applications in medicinal research due to the distinctive and unique properties of natural compounds. All metabolites are produced from the …
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Conformationally-Controlled Late-Stage Modifications for SAR Studies of the C-3-Glcp Moiety of Ipomoeassin F
… in the penultimate step, making medicinal chemistry studies of the tigloyl moiety possible. The late-stage conformationally-controlled highly regio-selective esterification allowed for the completion of ipomoeassin F and other tigloyl modified analogs. The in-house cytotoxicity data …
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A study of epigenetic mineralisation in the Central Zone of the Damara Orogen, Namibia with special reference to gold, tungsten, tin and rare earth elements
… detailed geological mapping with petrographic studies, whole rock geochemistry (obtained by X-ray fluorescence spectrometry, atomic absorption spectrometry, fire assay and infra-red spectroscopy), mineral chemistry studies (electron microprobe and X-ray diffraction) and geochronological work …
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NUTRIENT RETENTION BY RIPARIAN FORESTED BUFFERS IN WESTERN MARYLAND: DO THEY WORK AND ARE THEY WORTH IT?
… help restore the Chesapeake Bay. Although many studies support riparian buffers as a BMP, many have also reported a wide range of nutrient reductions. It is uncertain what factors control buffer function, yet they continue to be installed with high expectations. Water quality predictions become …
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Synthesis and Evaluation of Densely-Functionalized Troponoids
… for assistance in a variety of medicinal chemistry studies. In Chapter 1, we outline the use of this synthetic strategy in the profiling of a library of synthetic αHTs against an aminoglycoside antibiotic resistance enzyme known as aminoglycoside-2’’-O-nucleotidyltransferase [ANT(2’’)-Ia]. …
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Insights into the radiation Chemistry of FLASH Radiation Therapy
… under FLASH conditions.</p> <p>For radiation chemistry studies, the spin trap DMPO was used to detect hydroxyl radicals (•OH) and hydrogen radicals (•H) in normoxic triple-distilled water. Irradiations were performed using a modified Varian Clinac 21X. Spin adducts (•DMPO-OH, •DMPO-H) were …
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Designing Direct and Indirect Factor Xa Inhibitors
… of compounds using well established peptide chemistry. Mechanistically, the designed inhibitors were expected to bind to FXa in the active site and function as orthosteric inhibitors. These direct FXa active site inhibitors are also likely to inhibit clot–bound enzyme. Nearly 60 THIQ …
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Investigating the controls on surface ocean dimethyl sulphide concentrations at regional to global scales
… (AMT, the Barents Sea, the Atmospheric Chemistry Studies in the Oceanic Environment (ACSOE) research campaign and the DImethyl Sulphide biogeochemistry within a COccolithophore bloom (DISCO) study. Using multiple linear regression (MLR) analyses, it was found that the combination of, in …
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Qualitative and semi-quantitative physico-chemical characterization of some calcium phosphate implant and bone samples
… did so only after heating to 900°C. Surface chemistry studies further confirmed chemical differences between implants and bone by virtue of the fact that neither exogenous Ca²⁺ nor Na⁺ adsorbed/exchanged with ions in the implants, while bone exhibited a clear saturation curve for each …
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Anilate-based Functional Molecular Materials with Conducting and Magnetic Properties
… properties and preliminary coordination chemistry studies. Chapter 2 reports on a general synthetic strategy to achieve rationally designed tris-chelated octahedral paramagnetic metal complexes, based on the combination of CrIII and FeIII as metal ions with chloranilate, bromanilate, …
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Creating Green Chemistry: Discursive Strategies of a Scientific Movement
… I examine the evolution of the green chemistry movement from its inception in the early 1990s to the present day. I focus my study on the discursive strategies employed by leaders of the movement to establish green chemistry and to develop and institute changes in the practice of the …
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Advanced Chemical-Mechanical Dewatering of Fine Particles
… time, reagent type, sample aging, water chemistry, etc. It was determined that use of the novel dewatering aids could reduce the cake formation time by a significant degree due to the increased kinetics of dewatering. At the same time, the use of the dewatering aids reduced the cake …