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 17 of 17 for “"X-ray Fluorescence Analysis"”.
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X-Ray Fluorescence Analysis of Tuscaloosa Marine Shale Cuttings from Horizontally Drilled Wells
… Cretaceous Tuscaloosa Marine Shale (TMS) is a gray to black fissile marine shale deposited at depth of between 10,000 and 20,000 ft near the ancient Gulf of Mexico. The TMS has been gradually developed as a hydrocarbon reservoir in the past several decades. But there are rare researches …
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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
… of 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 …
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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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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, …
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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
… volcanic (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 …
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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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The petrology and geochemistry of the minor intrusions in the central metasedimentary belt, Grenville Province, southern Ontario, Canada.
… and 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 …
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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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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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The adsorptive properties of oligomeric, non-ionic surfactants from aqueous solution
… scanning electron microscopy (SEM), X-ray photoelectron spectroscopy, X-ray fluorescence -analysis, Fourier transform-infra red spectroscopy and BET analysis. It was found that washing the quartz with concentrated HCI removed any calcium ions present on the surface and also removed 02- …
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Archaeology and archaeometallurgy in Limpopo province of South Africa: case studies of early iron age sites of Mutoti and Thomo
… Iron Age sites, while Optical Microscopy, X-Ray Fluorescence analysis (XRF) and Scanning Electron Microscopy (SEM) were used to investigate the metallurgical remains to understand metal production technology. Both Mutoti and Thomo sites share several similarities, namely, they are situated …
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AN EXPERIMENTAL INVESTIGATION INTO THE EFFICIENCY OF FILTER MATERIALS FOR PHOSPHATE REMOVAL FROM WASTEWATER
… such as scanning electron microscopy SEM and X-ray fluorescence analysis XRF to identify their characteristics, and conducting a batch test and constructing a lab-scale upflow filter to investigate the filter materials’ affinity to phosphate. Based on the phosphate removal efficiency and …
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RECONSTRUCTING PHOENICIAN POTTERY PRODUCTION IN SARDINIA: A MULTI ANALYTICAL CHARACTERIZATION OF SAMPLES FROM THE SITE OF PANI LORIGA (8-7TH CENTURY BC) AND MONTE SIRAI (6-5TH CENTURY BC)
… inclusions. Optical petrography, combined with X-ray diffraction analysis, provided insights into the mineralogical associations, firing temperatures, and rock inclusions. In the most populated groups, the presence of minerals such as quartz, plagioclases, feldspars, and hydro-silicates, …
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The archaeology and technology of metal production in the Late Iron Age of the Southern Waterberg, Limpopo Province, South Africa
… context, while Optical Microscopy, X-ray Fluorescence Analysis and Scanning Electron Microscopy of metallurgical remains were used to identify the metals and techniques that were employed. Ceramic technological studies were used to establish relationships between the metallurgy and the …
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Trace Metal and Speciation Analysis using Ion-Exchange and Energy Dispersive X-ray Fluorescence Spectrometry
… obtained by scanning electron microscopy and x-ray microanalysis showing a homogeneous distribution of functional groups and retained ions on both sectioned and whole resins. Particle size experiments performed on Dowex 50W-X8 (38 - 840 µm) showed that this parameter has no effect on the …