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 15 of 15 for “"Photosensitized"”.
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Nanoscale Enhancement of Photosensitized Radionuclide Stimulated Therapy
… malignancy. With the recent development of photosensitized radiation stimulated therapy (PRaST) this depth dependence is broken through co-localization of radionuclides and semiconducting photosensitizers. This dissertation focuses on the enhancement of titanium dioxide (TiO2) based PRaST …
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Mercury Photosensitized Oxidations in the Gas Phase
This thesis describes experiments on the mercury-photosensitized oxidations of some hydrocarbon alkenes with molecular oxygen. Products have been identified and variations in product yields studied in detail as a function of alkene/oxygen ratio, total pressure, incident light intensity and time for …
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The role of copper in aquatic photochemistry of dissolved organic matter
… has been shown to significantly inhibit the DOM-photosensitized degradation of various electron-rich contaminants (e.g., phenols and amines) in our previous studies. The inhibition is not attributed to the quenching of photochemically produced reactive intermediates by Cu and the impact of Cu on …
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Investigation Of New Ligand Architechtures Towards Proton And Water Reduction Catalysis By Cobalt Complexes
… <p>Finally, we incorporated [Ru(bpy)2]2+-based photosensitized with one of the catalytic module (cobalt tetradentate oxime) to generate heterobimetallic [RuIICoIII] species which displayed quenching of CoIII upon electron transfer from RuII* excited state.</p>
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Photoactivated Fixation of Cartilage Tissue
… the goal of enhancing biological integration. Photosensitized collagen gels were first analyzed via FTIR to determine the crosslinking effects with respect to collagen type and photochemical mechanism. Using the photogellation FTIR results as a parametric guide, in vitro mechanical testing of …
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The Reactions of Oxygen Atoms and Monofluoromethylene Radicals with Fluorinated Ethylenes in the Gas Phase
Oxygen atoms generated in a mercury photosensitized decomposition of nitrous oxide were reacted with 1,2-difluoroethylene and trifluoroethylene and observed to form mainly monofluoromethylene (CHF) radicals and carbonyl fluoride. The CHF radicals then added to fluoroethylene to form "hot" …
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Semiconductor nanocrystals for novel optical applications
… response, photorefractive polymeric composites photosensitized with semiconductor nanocrystals have emerged as an important class of materials. Here, we report on the photosensitization of photorefractive polymeric composites at visible wavelengths through the inclusion of narrow band-gap …
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Singlet Oxygen Production and Its Kinetics in Nanoparticle-Photosensitizer Hybrid Systems
… when nanomaterials are used to aid and manage photosensitized singlet oxygen production. To aid in this quest, the studies presented in this thesis looked at singlet oxygen generation from several common types of colloidal hybrid nanoparticle-photosensitizer materials. Silica- and …
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Proteômica comparativa de linhagens celulares humanas expostas a estresse oxidativo induzido por riboflavina fotossensibilizada
… and XP4PA (XPC-deficient) were treated with photosensitized riboflavin and then carried out the differentially expressed proteins identification by mass spectrometry. From the results, it was observed in MRC5-SV increase expression in most of the proteins involved in cellular defense, an …
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Characterization of Hydrophobically Modified Titanium Dioxide Polylactic Acid Nanocomposite Films for Food Packaging Applications
… for complete visible and UV-light protection for photosensitized foods.
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A Model for the Chloroplast: A Study of the Photochemical and Spectral Properties of Pheophytin A Adsorbed to the Surface of Small Particles
… method was developed to study quantitatively the photosensitized reduction of an azo dye in the highly scattering particle suspensions. Measurements of the absorption and fluorescence properties of the coated particles were made to learn more about the state of the pheophytin on the particle …
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Naujo tetrakatijoninio porfirino sukeltos Escherichia coli fotopažaidos /
The development of multidrug resistance and its spreading among the pathogens, increased the demand for alternative treatment methods of bacterial infections. One of the most promising techniques is photodynamic antibacterial chemotherapy. The main idea of it lays in combining three initially …
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Chemical aspects of saponin bioactivity and ovine photosensitization diseases
… gathered from pasture on which sheep were photosensitized, were determined. Elevated levels of sarsasapogenin and smilagenin containing saponins were found in flower heads (ca. 18000 mg/kg DM). Significant levels of free genins were found in plant roots (832-1184 mg/kg DM). The percentage …
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Mechanistic, Biochemical, and Theoretical Studies of Phototoxicity and Photobluing
… DFT calculations.</p> <p>Chapter 4 discusses the photosensitized oxidation of <em>ortho-</em>prenyl phenol leading to byproducts capable of killing ovarian cancer (OVCAR-5) cells in a mechanism separate from singlet oxygen (<sup>1</sup>O<sub>2</sub>) toxicity. We are interested in cell killing …
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Efficient Utilization of Solar Energy in Dye-Sensitized Solar Cells and in the Photocatalytic Reduction of Carbon Dioxide
One of the most important questions humanity will face in the next 100 years is going to be "What will happen when oil runs out?" This dissertation describes efforts to utilize solar energy to improve renewable energy technology in two ways: First, through the improvement of dye sensitized solar …