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 9 of 9 for “"Peak fitting"”.
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Magnetic Resonance Studies of Three-Phase Heterogeneous Catalytic Hydrogenation Reactions
… behaviour inside the porous catalyst material. A peak fitting method was developed to facilitate the quantification of species within a reactor from chemical shift imaging (CSI). This method helped to identify overlapping peaks caused by the broadening effects of liquids imbibed within porous …
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Interaction of Light and Conjugated Polymers in Plasmonic Nanogaps
… signals in air, combined with multi-Gaussian peak fitting analysis on the electrochemistry of single-molecule SERS, I have gleaned insights into the dynamic interactions between the polymer and the gold surface. This approach holds promise for unveiling transient structural fingerprints and …
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A Statistical Methods-Based Novel Approach for Fully Automated Analysis of Chromatographic Data
… and a decision tree approach to de-convolute peaks. This approach was applied to data from the GoAmazon 2014/5 campaign and cataloged more than 1000 unique analytes. A novel method is then introduced to automatically identify quantification ions for single-ion chromatogram (SIC) based peak …
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Quantification of swelling clays in mineral mixtures and rocks using infrared spectroscopy.
… had been determined by previous workers using a peak fitting technique. An initial investigation of seven different types of sandstone rocks was carried out by visual inspection of XRD traces of powder and rock samples. In this work mineralogical heterogeneity was found along the length of the …
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Characterization of Intermolecular Interactions in Nanostructured Materials
… hydrogen bonding surface functionalities. Peak fitting analysis was performed in the carbonyl-stretching region for each sample, and the hydrogen-bonding index (Rindex) was reported. Rindex values were used to quantitatively compare all of the composite samples in regards to temperature …
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Metabolomic Analysis of Bacterial Cell Wall Intermediates Using LC-MS/MS: Peptidoglycan Pathway Response to Different Antibiotics
… components were deconvoluted using Gaussian peak fitting and by linear deconvolution using their MS/MS intensity profiles. This approach can be used for the resolution of any challenging isomeric compounds.
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Study of Chemical States, Composition and Adsorption Behavior of Iron Coated Granular Activated Carbon (Fe-GAC) for Selenate Removal and Feasible Adsorbent Modifications
… of coated iron on GAC surface. The multiplet peak fitting results for high resolution XPS spectra for O1s and Fe2p3/2 indicated that Fe(III) was formed after coated with 0.1 M ferrous chloride, and alpha-FeOOH was the possible chemical composition. Furthermore, the suspension of Fe-GAC in NaCl …
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Modeling and experimental process optimization for a SiH4 + H2 surface wave plasma discharge for silicon photovoltaics
… while the crystallinity was determined via peak fitting of Raman spectra. A distinct transition from nc-Si to a-Si was observed between 1% and 2.5% SiH4 concentration, increasing for higher source power and decreasing for lower substrate temperature. An optimal substrate temperature was …
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Atomic structure and defects of III-V compound semiconductor strained-layer-superlattices for infrared detection
… image can be readily interpreted based on the peak intensities and peak positions as the intensity scales with the atomic density and atomic numbers to a good approximation. In particular, a probe forming spherical aberration corrector improves the spatial resolution of STEM to 1 Å or better, …