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 32 for “"fluorescence analysis"”.
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X-Ray Fluorescence Analysis of Tuscaloosa Marine Shale Cuttings from Horizontally Drilled Wells
… that were available for this study. X-ray fluorescence (XRF), which measures elemental abundances, was used to directly represent the geochemical properties of the 175 available well cuttings from the TMS. Chemostratigraphic profiles and elemental analysis can help to evaluate drilling …
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X-Ray Fluorescence Analysis Of The Bakken And Three Forks Formations Of The Williston Basin, North Dakota And Well Logging Applications
… the Williston Basin in North Dakota using x-ray fluorescence. The Charlotte 1-22H core sequence from Continental Resources was also included to assess the elemental composition of the stratigraphic interval spanning the Lodgepole, Bakken, Pronghorn, and Three Forks Formations. Core samples were …
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Trace element concentrations in melanotic swine
… of melanomas. In this work, neutron activation analysis and x-ray fluorescence analysis were used to determine trace element concentrations in cancerous, noncancerous and normal swine skin samples and in non-cancerous and normal swine tissue samples. In-vivo x-ray fluorescence analysis was also …
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Synthetic Functionalized Scaffolds for Culture and Maintenance of Primary Human Hepatocytes
… using transmission electron microscopy (TEM), fluorescence analysis, and rheology. TEM was employed to determine the nanoscale structure of the material. In order to verify that the peptide-‐based structural fiber, cell adhesion peptide, and amino sugar components of the gel were integrating …
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Petrology of the Gradational Intrusive Contact Between the Packsaddle Schist and the Town Mountain Granite, Enchanted Rock State Natural Area, Llano Uplift, Central Texas
… and thin section petrography, and handheld X-ray fluorescence analysis of hand samples were used to characterize the gradational nature of this contact at multiple scales. The style of gradation between the Town Mountain Granite and Packsaddle Schist varies throughout the study area, containing …
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Late Holocene Toolstone Procurement and Land-Use Strategies in the Black Rock Desert and High Rock Country of Northwest Nevada
… occupants. This is achieved through: lithic analysis from Paiute Creek Shelter (PCS), a recently excavated rock shelter with stratified cultural remains spanning the Late Holocene; X-ray fluorescence analysis of artifacts from PCS, Hanging Rock Shelter, Silent Snake Springs, and Smokey Creek …
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A Stone's Throw from the Source: An Examination of Fine-Grained Volcanic Toolstone Use in the Pah Rah Range, Western Nevada
… (FGV) toolstones. Using data from the X-ray fluorescence analysis of 303 FGV artifacts from 18 sites in the Pah Rah Range and surrounding areas, this thesis assesses whether prehistoric groups in the Pah Rah Range utilized primarily local or exotic FGV sources and how their procurement and …
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Preliminary Assessment: Identification of Chinese Drywall and Exposure to Particulate Matter and Metals during Cutting and Installation of Drywall
… This study has two parts. First part presents an analysis of metals like strontium for the identification of Chinese drywall, and a comparison of strontium concentrations of American drywall and Chinese drywall using XRF (X-Ray Fluorescence) analysis with the Innov-X XRF analyzer. The second part …
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Macrophage Polarization (M1/M2) and its Role in Wnt5a Secretion/Expression in Atherosclerosis
… hypothesis, we performed immunohistochemical analysis using Wnt5a, CD68 (for macrophages) and CD163 (for M2 macrophages) in human atherosclerotic tissue sections derived from the carotid arteries of patients undergoing endarterectomy. We also performed immuno-fluorescence analysis to detect …
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Studies of Surfactants Effect on Riboflavin Fluorescence and Its Determination in Commercial Food Products and Vitamin Tablets.
… optimized, and employed for measurement of fluorescence from riboflavin (vitamin B<sub>2</sub>). Surfactants have been known to enhance the intensity of fluorescence of fluorescent compounds. Fluorescence analysis of riboflavin in the presence of various anionic, cationic, and nonionic …
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Untersuchungen zum Infektpotential von Biomaterialien (Meshes) in der Bauchdecke
… Staphylococcus aureus was measured in vitro by fluorescence analysis. Additionally, the two mesh materials (8-mm platelets) were implanted subcutaneously in Sprague-Dawley rats with daily surveillance for clinical signs of infection. After 7 days the meshes were explanted for histological and …
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The petrology and geochemistry of the minor intrusions in the central metasedimentary belt, Grenville Province, southern Ontario, Canada.
… trace element contents were determined by X-Ray Fluorescence Analysis. Four distinct geochemical suites have been recognized: a Low Zirconium Suite of tholeiitic basalts, an Intermediate Zirconium Suite of tholeiitic basalts, andesites, dacites and rhyodacites, a Calc-Alkaline Suite of basalts, …
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Characterising Chumash Rock Art Pigments Using Portable XRF Technology
… Preserve, California were examined using X-Ray fluorescence analysis in order to characterise the range of pigments used. Most of the pigments were red in colour but black, grey, blue and white pigments were also included in the study. The findings showed that this technique is viable, …
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Element specific X-ray fluorescene microtomography
X-ray fluorescence is widely known as an element-specific scanning analytic tool. It is used in many fields of science and technology and has given major new insights into different problems. The relatively large penetration depth of x rays into matter makes them ideally suited for tomography. The …
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Hydro/Solvothermal Synthesis, Structures and Properties of Metal-Organic Frameworks Based on S-Block Metals
… using X-ray diffraction, IR, UV-vis, TGA and fluorescence analysis. The structures of compounds 1, 6 and 7are three-dimensional frameworks while that of compound 2 is a double layered network.</p>
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Technological Adaptation on the Frontier: An Examination of Blacksmithing at Fort Michilimackinac, 1715-1781
… Several artifact groups were selected for analysis based on trade records and other historic documents that described their local production and/or repair at the fort. Trends in repair methods and potential technological adaptations of blacksmithing techniques exhibited by these repairs are …
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Development of a non-destructive fluorescence technique for analysis of contact lens deposition levels
… research has been to determine the potential of fluorescence spectroscopy as a method for analysis of surface deposition on contact lenses. In order to achieve this it was first necessary to ascertain whether fluorescence analysis would be able to detect and distinguish between protein and lipid …
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Ploidy and Ecophysiology analysis of the Arenaria ciliata L. complex (Caryophyllaceae) in Europe
… ecotypes of A. ciliata species complex. Ploidy analysis reveals that among analysed taxa various ploidy levels were recorded. Distribution of ploidy variation of A. ciliata species across Europe in the present study indicates that polyploidisation has occurred on multiple separate occasions in …
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A systematic study of the effect of ultrasound on food enzymes and bioactives in model and real food systems (strawberry puree)
… US treatment were studied using time resolved fluorescence. The impact of US treatment on the antioxidant activity, polyphenols, and anthocyanins in strawberry puree samples after treatment and during storage, in comparison with untreated and thermally processed samples was also evaluated. The …
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