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 13 of 13 for “"X-ray contrast"”.
-
Monitoring Photocatalytic Degradation of X-ray Contrast Media with Raman Spectroscopy
<p>X-ray contrast media such as diatrizoate and iohexol have been found in wastewater and drinking water and are difficult to remove because they are resistant to water treatment processes. A removal process can be started with ultraviolet photocatalytic degradation of X-ray contrast media in the …
-
UV- TiO2 photocatalytic degradation of the x-ray contrast agent diatrizoate: kinetics and mechanisms in oxic and anoxic solutions
In recent years, triiodinated X-ray contrast agents (XRCs) have been widely detected in natural waters at concentrations that are often relatively high compared to other pharmaceutical micropollutants due to their extensive use and high biological recalcitrance. Diatrizoate is an ionic XRC that has …
-
Application of a High‑Resolution Computed Radiography System in Detecting an Iodinated X‑ray Contrast Agent: Small Animal Phantom Study
… and crucial for their development. Iodinated contrast agents are used to increase the X‑ray detectability of zone of angiogenesis, and thus providing a means for tracking tumor growth.</p> <p>The overall objective of this project was to evaluate the performance of Kodak CR 7400, a …
-
Chemical analysis of polymer blends via synchrotron X-ray tomography
… polymer blends are of great importance. X-ray tomography has been used to obtain spatial chemical information about various polymer blends. The spatial images are acquired with synchrotron X-ray tomography because of its rapidity, good spatial resolution, large field-of-view, and elemental …
-
Studies of Solution Paramagnetic-Substrate Nuclear and Electron Intermolecular Interactions
… as candidates for the next generation MRI contrast agents as diagnostic agents and also as possible therapeutic agents to kill cancer cells and decrease tumors. The TNT-fMFs are being studied as part of a multi-modal platform dependent upon which metal atoms are encapsulated inside: Gd — …
-
Exohedral Functionalization and Applications of the Trimetallic Nitride Endohedral Metallofullerenes
… Sc₃N@C₈₀, the synthesis of Lu₃N@C₈₀ as a novel X-ray contrasting agent, and the synthesis of Sc₃¹⁵N@C₈₀ with ¹⁵N₂ gas. The first derivative of Sc₃N@C₈₀ was synthesized by functionalizing the exterior of the cage via a [4 + 2] cycloaddition reaction with a ¹³C-labeled intermediate. Addition …
-
Imaging atherosclerotic plaque inflammation with [18F]- fluorodeoxyglucose positron emission tomography
… technique for imaging atherosclerosis is x-ray contrast angiography, which provides high-resolution definition of the site and severity of luminal stenoses, but no information about plaque inflammation. Quantification of plaque inflammation is desirable both to predict risk of plaque rupture …
-
Synthesis and Functionalizations of Trimetallic Nitride Template Endohedral Metallofullerenes (TNT-EMFs)
… such as magnetic resonance imaging (MRI) contrast agents, X-ray contrast agents and nuclear medicine. The TNT-EMFs have inherent advantages over other endohedral metallofullerenes, such as M@C60 and M@C82, due to the encapsulation of up to three metal atoms inside the carbon cages. …
-
Chemical Reactivity and Regioselectivity of Trimetallic Nitride Endohedral Metallofullerenes
… fullerene-based materials (e.g., as MRI and X-ray contrast agents) because of their high yields compared to classic endohedral metallofullerenes. This dissertation addresses the chemical reactivity and regioselectivity of TNT EMFs. Based on the extraordinarily high stability of TNT EMFs …
-
Drinking water disinfection by-products: toxicological impacts and biological mechanisms induced by individual compounds or as complex mixtures
… and v) determine the impact of iodinated X-ray contrast media (ICM) in the source water and the type of disinfectant on the overall toxicity of DBP mixtures. From this study, iodoacetaldehyde was identified as a new DBP and ten HALs induced in vitro cytotoxicity and genotoxicity in Chinese …
-
Oxidative Treatment of Emerging Micropollutants and Viral Pathogens by Potassium Permanganate and Ferrate: Kinetics and Mechanisms
… regulators, beta-blockers, antihistamines, X-ray contrast media, etc., in drinking water sources has been reported in recent years. The presence of these contaminants, although at low concentrations, raises public concerns about potential adverse effects on aquatic ecology and human health. …
-
In vitro toxicology of complex mixtures from drinking water disinfection and amine-based carbon capture systems
In nature, exposure to chemical insults and toxic agents never occurs in isolation. Any number of concurrent exposures can result from environmental factors. The complex network of integrated organ systems and metabolic pathways are altered by the presence of different agents, so it is possible …