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 16 of 16 for “"radiation chemistry"”.
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Insights into the radiation Chemistry of FLASH Radiation Therapy
<p><strong>Purpose:</strong> FLASH radiation therapy (FLASH-RT) is an emerging modality that delivers radiation at ultra-high dose rates (UHDR) and has shown consistent normal tissue sparing while preserving tumor control compared to conventional RT—a phenomenon termed the FLASH effect. Despite …
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Studies in High Energy Radiation Chemistry of Aqueous Solutions
Made available in DSpace on 2015-05-12T17:02:23Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0005965.PDF: 5643831 bytes, checksum: 5f9ee2d1d355fe32c76a4242ef4b4474 (MD5) Previous issue date: 1953
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RADIATION CHEMISTRY IN PRESSURIZED WATER NUCLEAR REACTORS: H2 GENERATION BY 10B(n,α)7Li, AND THE REACTION OF BORATE WITH •OH
… included in models of the cooling water radiation chemistry. H2 produced in water from the 10B(n,α)7Li fission reaction has been measured up to 300 °C to aid in quantification of the corrosive H2O2 from the same reaction. Thermal energy neutrons from the Rhode Island Nuclear Science …
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The Determination of the Thermal Neutron Flux in a Research Reactor
… of reactor power level) but also for numerous radiation experiments in solid state physics, nuclear physics and radiation chemistry. In addition, surveillance tests on structural materials in nuclear reactors require that all test specimens receive a neutron exposure that is representative of …
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Creation and modification of polymeric materials using electron beam radiation
This dissertation begins with a review of radiation chemistry and a number of important variables which can influence the chemistry occurring in irradiated polymeric materials. Following the literature review, four different studies involving the electron beam irradiation and subsequent …
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Real-time observation of particle interactions in matter using laser-driven accelerators
… of a material and localised response to radiation contributes to the overall macroscopic picture of particle-matter interactions. This is achieved by exploiting advances in laser technologies that enable transient absorption experiments via pump-probe methodologies across numerous …
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First-principles study of radiation-induced radicals in solid-state amino acids and sugars: confrontation of density-functional calculations with experimental results
… an extensive computational study of several radiationinduced radicals of biomolecules. In particular, two specific types of molecular systems will be highlighted: amino acids and sugars. Both systems are abundantly present in the natural world and are vital to the existence of life in all its …
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Structure-Property Relationships in Polymeric Materials Generated by Electron Beam Processing
… in this dissertation is in the subject area of radiation chemistry of polymeric materials and begins with a literature review of that subject. Along with the general literature review, three smaller and more specific reviews are presented for background information relevant to the three …
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A combined EMR and DFT study of radiation-induced defects in sucrose and glucose 1-phosphate
Ionizing radiation induces radicals in organic matter, i.e. molecules with one or more unpaired electrons. This dissertation deals with a detailed study of radicals induced by X-ray radiation in solid sucrose (also known as common household sugar) and in the dipotassium salt of glucose 1-phosphate …
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Structure-property relationships of electron beam irradiated monomeric and polymeric systems
… behavior. In this thesis, the basic theories on radiation chemistry were first reviewed. Next, five different studies on the application of EB radiation were discussed. In the first study on the surface modification of the methacrylic acid derivative of the glycidyl ether of bis-phenol A(bis-GMA) …
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Comparison and Investigation of Solar Spectral Irradiance with Solar Aspect Monitor
… variation of NO is due to solar illumination, radiation, chemistry, and vertical diffusion. Solar soft X-ray is the major driver of the variability observed in the ionospheric and thermospheric constituents at the equatorial region. Over the years measurements in these wavelengths are scarce …
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Monte Carlo simulation of the radiolysis of water by fast neutrons at elevated temperatures up to 350°C
Abstract : Controlling the water chemistry in a water-cooled nuclear power reactor requires understanding and mitigating the effects of water radiolysis to limit the corrosion and degradation of materials by oxidizing radiolysis products. However, direct measurement of the chemistry in reactor …
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Understanding the Impact of Nuclear Environment on the Hydrothermal Corrosion in SIC
… on materials because they are subjected to irradiation, high pressure, high temperature, and aqueous chemistry. Experiments were performed under prototypical LWR conditions (Pressure, temperature, flow rate) to understand the corrosion and silica dissolution characteristics of high purity …
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Fluorine-containing fullerenes and endometallofullerenes: synthesis, structure, and spectroscopic characterization
Many new members of a relatively new class of exohedral fullerene derivatives with fluorine-containing electron-withdrawing groups have been prepared and studied by spectroscopic methods and X-ray crystallography. The fluorination and/or perfluoroalkylation reactions were performed with C60, C70, …
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High Pressure Liquid Chromatography Studies of the Reaction of Platinum Complexes with Peptides
Platinum complexes (cisplatin, carboplatin and oxaliplatin) are effective anticancer agents. However the major drawbacks of platinum chemotherapy are toxic side effects and resistance. The affinity of platinum complexes to sulfur donor ligands of side chains of methionine and cysteine amino acids …
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Advanced Spectroscopic Methods for Photochemical and Electrochemical Systems
Switching from non-renewable fossil fuels to sustainable options like light and electricity is essential for reducing global greenhouse gas emissions and mitigating the atmospheric CO2 levels. But this transition requires a detailed mechanistic understanding of the catalyst and intermediates that …