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 116 for “"SEM-EDS"”.
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Evaluation of Chloride Diffusion in Concrete Using Bulk Diffusion Test and Scanning Electron Microscopy
… tedious testing. Scanning Electron Microscopy, SEM, equipped with Energy Dispersive X-ray Spectroscopy, EDS, proved to be the most promising alternative which directly quantifies the chloride content of a sample. A research study was conducted to develop a sound, sustainable SEM-EDS test …
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Bond strength between veneer porcelains and CAD/CAM ceramic to CP titanium and evaluation of fracture load and effect of aging on low fusing porcelain fired over CP TI and CAD / CAM materials cemented onto CP TI
… of failure and bond interface was evaluated by SEM / EDS. RESULTSs: The data were analyzed statistically using ANOVA and Tukey ≤ 0.05. Group 4 is significantly higher than the other groups. Group 1 is significantly higher than group 3, but similar to group 2. SEM/EDS analysis reveals that the …
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Two-Dimensional Titanium Carbide MXene for Lithium-ion Conductive Solid-state Electrolytes
… microscopy with energy-dispersive spectroscopy (SEM-EDS), Fourier-transform infrared (FTIR) spectroscopy, atomic force microscopy (AFM), and Kelvin probe force microscopy (KPFM) to evaluate its structural and morphological properties. To explore the potential of 2D Ti3C2Tx MXene in SPEs, the …
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Processing and microstructure of standard and modified macro-defect-free cements
… and microchemistry was studied by TEM/EDS and SEM/EDS. MDF samples were prepared through an alternative, Banbury mixing route. Experiments with varying mixing time at constant mixing rate showed that an intimate distribution of constituents in the composite was assured at the early …
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The development and demonstration of a practical methodology for fine particle shape characterisation in minerals processing
… Automated Scanning Electron Microscopy (Auto-SEM-EDS) is a widely used tool for mineralogical analysis. It also provides an opportunity for simple, quantitative and mineral-specific shape characterisation. Existing mineralogical databases could therefore become useful resources to facilitate …
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Encapsulation of iron(III) protoporphyrin IX and tetraphenylporphyrin in metal-organic frameworks for application as heterogeneous oxidation catalysts
… and encapsulation. Encapsulation was verified by SEM-EDS and showed comparable concentrations of Fe(III)PPIX on exposed interior surfaces and on the original surface of fractured crystals. SEM EDS results were consistent with ICP-OES data on bulk material (1.2 ± 0.1 mass % Fe). PXRD data showed …
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Feasibility of waste-derived hydroxyapatite mixed with ultra high molecular weight polyethylene composites for fused deposition modeling process
… The Ca/P ratio was investigated by using SEM/EDS and XRD test. By using these test, it revealed Ca/P ratio of waste-derived HAp has shown 1.69 approximately with the standard Ca/P ratio (1.67). HAp/UHMWPE composites formulation samples were prepared by mixed between HAp and UHMWPE using …
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Correlations between the Mineralogy and Recovery Behavior of Rare Earth Elements (REEs) in Coal Waste
… microscopy-energy dispersive X-ray spectroscopy (SEM-EDS and TEM-EDS) analyses were conducted to investigate the mineralogy of REEs in two coal waste samples. Totally, 49 and 50 REE-bearing particles were found from the SEM specimens of Western Kentucky No. 13 and Fire Clay coal waste samples, …
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Characterization of Boron Nitride Thin Films on Silicon (100) Wafer.
… stresses) were characterize using FTIR, XRD, SEM, EDS, TEM, and AFM techniques. In addition, a pin-on-disk tribological test was used to measure coefficient of friction. Results indicated that samples deposited at 400°C contained higher cubic phase of BN compared to those films deposited at …
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Zvyšování bělosti kaolinu
… složení a míra uspořádanosti kaolinitu. Pomocí SEM-EDS byla sledována distribuce chromogenních složek. Residua organické hmoty byla stanovena pomocí COD testu a metodou ICP-OES byly sledovány koncentrace chromogenních složek ve výluhu. V poslední řadě byl měřen index bělosti, jehož zvyšování je …
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Explaining a Low-Temperature Magnetic Order in Annealed van der Waals Semiconductor CrSBr
The van der Waals semiconductor CrSBr stands out as a promising 2D magnetic material due to its high ferromagnetic ordering temperature (135 K), near-infrared direct bandgap (1.5 eV), and stability in air. In this thesis we report on the detection of a low-temperature magnetic order in annealed …
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Glass population study and discrimination of glass samples using Glass Refractive Index Measurement III and scanning electron microscopy/energy dispersive X-ray spectroscopy
… Microscope and Energy Dispersive Spectroscopy (SEM/EDS) for elemental composition of each sample. Refractive index varies with glass depending on the manufacturing process and its added components and is defined as the ratio of the speed of light in a vacuum to the speed of light in the …
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Effects of elevated temperature exposure on cement-based composite materials
… with energy dispersive x-ray analysis (SEM-EDS). Thermal degradation of calcium silicate hydrate (C-S-H) is assessed based on AFM image analysis and a statistical analysis of static and dynamic nanoindentation. Furthermore, the application of combined nanoindentation/SEM-EDS successfully …
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Tailoring Isothermal Redox Properties of Calcium-based Perovskites
… were monitored at different stages using SEM, EDS and wide angle XRD.
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Crack Self-Healing in Alkali-Activated Materials: From Mechanisms to Strategies for Enhancing the Healing Efficiency
… microscopy with energy dispersive X-ray (SEM-EDS) analysis and Raman spectroscopy. Ultimately, a chemistry-informed machine learning model was proposed to estimate the compressive strength of AAMs, therefore guiding the design of AAMs that meet the requirements for construction. The …
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Caratterizzazione e studi di provenienza delle malte della Villa dei Quintili (Roma)
… La villa, articolata in più nuclei distinti, sembra aver conosciuto diverse fasi edilizie. Per tale ragione, il campionamento è stato eseguito in accordo e in presenza degli archeologi della Soprintendenza Archeologica di Roma, che hanno autorizzato il prelievo di un totale di 40 campioni di …
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Electrospun Titanium Dioxide and Silicon Composite Nanofibers for Advanced Lithium Ion Batteries
… were characterized using Raman spectroscopy, SEM, EDS, TGA, and powder XRD. Carbonized TiO<sub>2</sub> nanofibers showed a low but stable specific capacity. Si Nanoparticles demonstrated an initially high but fast degrading capacity. In contrast, silicon in SiNP/C/TiO<sub>2</sub> nanofibers …
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A proof of principle nuclear forensics technique for determining ²³⁵U enrichment from UF₆ steel cylinders
… as forensic materials for uranium enrichment. SEM, EDS, XPS, ToF-SIMS, TEM and FlashDSC were performed to determine if the surface deposition left chemical or damage signatures that could infer the presence of high enrichment 235U via the decay products present. Additionally, compositional and …
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Triple oxygen isotope measurements in chert: insights into the Snowball Earth glaciations
… uranium-lead geochronology, and SEM/EDS and XRD analyses, we present interpretations of both the host rock and possible scenarios for the geochemistry of the precipitating fluid(s) responsible for these silica cements. We posit that these cherts are precipitates either from …
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