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 20 of 22 for “"Elemental Mapping"”.
-
U-Pb calcite dating of fossil eggshell and its impact on continental terrestrial sedimentology
… Chapter One, we evaluated the reliability of elemental mapping coupled with LA-ICP-MS U-Pb calcite age dating of dinosaur eggshell recovered from Tel Ulaan Chaltsai against dinosaur eggshell from the Mussentuchit Member (Utah, USA.) which has been temporally well-constrained by ashfall zircon …
-
Gold-containing bimetallicnanoparticles
… field (HAADF) imaging, energy dispersive X-ray elemental mapping using a silicon drift detector (SDD), tomography, and electron energy loss spectroscopy (EELS). Sizes and shapes of the Cu-Au, Pd-Au, and Pt-Au nanoparticles are studied by TEM. Morphological evolution and aggregation of the Cu-Au …
-
Advances in single component adhesive enable the production of high-performance rubber composites containing 40 wt% rubber waste and 95 wt% rubber waste when supplemented with devulcanization
… study. Finally, scanning electron microscopy and elemental mapping enabled a new understanding of the architecture of the composites, and shows that the adhesive is not acting as a coating to the rubber crumb, but is instead shearing off substantially and distributing itself in the composite.
-
Correlative elemental and electrical micro-analysis of laser fired contacts in silicon solar cells
… studied using scanning electron microscope and elemental mapping tools like micro-X-ray fluorescence microscopy and energy dispersive spectroscopy. For the conditions studied, it is unclear whether double-shot lasing can produce higher-quality LFCs than single-shot lasing, although results …
-
Fast neutron resonance radiography for element imaging : theory and applications
… Radiography (NRR) has been devised as an elemental imaging method, with immediate applications to detecting explosives and drugs in passenger suitcases. In the NRR method, the 2-D elemental mapping of hydrogen, carbon, nitrogen, oxygen and the sum of other elements are obtained from fast …
-
Trimetallic gold silver copper nanorods for carbon dioxide reduction
AuAgCu trimetallic nanorods of varying sizes and elemental ratios were synthesized using a seed-mediated growth procedure. These three metals were of interest due to their respective metal nanorods’ tunable plasmonic and catalytic properties especially in photocatalysis. The synthesis was adapted …
-
Paleobiology of the Early Cambrian Yanjiahe Formation in Hubei Province of South China
… including energy dispersive spectroscopic (EDS) elemental mapping and micro-focus X-ray computed tomography (micro-CT). One important fossil recovered and analyzed with these techniques is a fossilized embryo. Fossilized animal embryos from lower Cambrian rocks provide a rare opportunity to study …
-
Growth Characterization of Mesophotic Rhodoliths in the Northern Gulf of Mexico Using Radiocarbon Dating
… such as stable oxygen isotopes profiling or elemental mapping. Therefore, we utilized sequential radiocarbon analysis for growth characterization of mesophotic boxwork rhodoliths. Rhodoliths were collected from the Flower Garden Banks National Marine Sanctuary in the northern Gulf of Mexico …
-
Hall effect in printed Nanoparticulate Silicon Networks
… reversal was observed. Based on the result of elemental mapping, two possible models were suggested to explain the doping effect. A state-of-the-art Hall measurement system was used to perform field dependent analysis of screen printed silicon inks in van der Pauw geometry. A …
-
The effects of high temperature metamorphic and melting processes on granulite-facies rocks
… of HPE concentrations derived from terrane-scale elemental mapping in central Australia show that low-pressure (150–175 °C/kbar) granulite-facies metamorphism was driven by elevated crustal heat production. This energy source resulted in extremely long-lived (> 150 Ma) low-P–high-T metamorphism. …
-
Low Dose Analytical Electron Microscopy of Hybrid Perovskite Photovoltaic Devices
… the perovskite specimen. Nanoscale compositional mapping is performed using energy-dispersive X-ray spectroscopy in a scanning transmission electron microscope, where the applied electron dose is minimised to suppress beam-induced specimen damage while still ensuring statistical significance in …
-
The role of Hydrogen as a temporary alloying element during the manufacturing stages of Ti-6AI-4V by the powder metallurgy route
… obtained in the current literature (>97%). Elemental mapping conducted proved that the diffusion of the MA particles were the same for both TiH2-6Al-4V and CP Ti-6Al-4V. The decrease from green to sintered density in the TiH2-6Al-4V samples was due to the formation and trapping of H2O (g). …
-
Fabrication and Characterization of Superconducting Core Fibers with Fused Silica Cladding
… phase even after the melt forming process. The elemental mapping showed that limited cross-diffusion occurred between the Pb core and fused silica cladding. Conversely significantly more elemental cross interaction between the core and cladding was noted for the YBCO core fiber. …
-
Chuaria, Vendotaenia, and the taphonomy of the Carbonaceous Compression
Carbonaceous Compressions are a widespread preservational style for fossils, yet their taphonomy remains poorly understood. Previous studies focusing on the taphonomy of carbonaceous compressions have primarily looked at exceptionally preserved faunas in plane view. The precious nature of these …
-
The Mineralogy And Chemistry Of Micrometeorites
… electron imaging, coupled with digitised x-ray elemental mapping and micro-spot analysis to locate, identify and classify the residues. 29 impact craters were located on solar cells. In the analysis of the residues; 3 were identified residues as space debris in origin, 6 unclassified and 20 as …
-
SYNTHESIS AND CHARACTERIZATION OF ZINC OXIDE BASED NANOSTRUCTURES AND COMPOSITES FOR ENERGY RELATED APPLICATIONS
… characterization by SEM, Raman spectroscopy, EDS elemental mapping, and X-ray powder diffraction (XRD), the electrochemical performances of an electrode fabricated based on this material were evaluated via cyclic voltammetry and galvanostatic charge-discharge using various electrolytes. The ionic …
-
Green synthesis of copper nanoparticles using Lannea discolor (Sond.) Engl. and evaluation of their biological efficacy
… by conclusive negative potential values. Elemental mapping revealed particles consisting of copper, gold, and silver among the main elements. The nanoflowers resulting from the reduction of leaf extracts and the nanoparticles acquired from the stem and root of Lannea discolor ranged from …
-
Reconstruction of aspects of Northern New Zealand paleoclimate over the last 200 ka using laminated Auckland maar lake sequences
… reconstruction using micro-XRF scanning inferred elemental variability encountered in the Ōrākei maar sediment cores. Moreover, the newly established diatom record also correlates to other palaeoecological records from the Auckland region and from across New Zealand that span early MIS 5 (ca. 123 …
-
Semiconductor nanostructures for device applications
… by using energy dispersive spectroscopy (EDS), elemental mapping and Fourier transform infrared spectroscopy (FTIR). Using UV-Vis spectroscopy at room temperature we obtained indirect and direct band gap values slightly blue shifted to the bulk values. Finally, a plausible growth mechanism has …
-
Mycobacterium tuberculosis metallomics
… exhibited average sizes less than 20 nm, with elemental mapping confirming the incorporation of secondary metals. The surface charge and optical properties were altered due to surface modification, including a UV-Vis absorption shift from 237 nm (SPIONs) to 247 nm (metal-coated SPIONs). FTIR …
Page 1 of 2