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 129 for “"Fourier transform infrared (FTIR)"”.
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Application of Fourier-transform Infrared (FTIR) for Quality Control of Swiss Cheese
… on split, variability and grading, respectively. Fourier-transform infrared spectroscopy (FTIR) was used in different parts of this study. FTIR collects the mid-infrared spectra (4000-700cm-1), and the resulting wave numbers formed, were used to monitor water extracts of Swiss-type cheese during …
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Use of Fourier transform infrared (FTIR) spectroscopy to determine the health-promoting index (HPI) of cow's milk
<p>Fourier transform infrared (FTIR) spectroscopy steadily has been gaining popularity for the analysis of milk components including total fat, protein, lactose, and ketones. To date, there have been few descriptions of the use of FTIR spectroscopy for the determination of milk fatty acid …
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Composite poly(dimethoxyaniline) electrochemical nanobiosensor for glufosinate and glyphosate herbicides
… as the dopant and structure-directing molecule. Fourier transform infrared (FTIR) spectroscopy, UV-Vis Spectroscopy, Transmission electron microscopy (TEM) and Scanning electron microscopy (SEM) studies inferred successful doping of the nanostructured PDMA film by PSS and that the template PSS …
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Application of Functional Amyloids in Morphological Control and in Self-assembled Composites
… of a material allows control of its properties. Fourier transform infrared (FTIR) spectroscopy shows that at low concentration, fibrils require interdigitation of methyl groups on alanine (A), isoleucine (I), leucine (L), and valine (V). At higher concentration, globules do not have the same …
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Processing and characterization of graphene and graphene on silicon
… are characterized by Raman spectroscopy and Fourier Transform Infrared (FTIR) spectroscopy to identify the composition of the resulting films. Current-Voltage (I-V) measurements are performed to determine the electrical properties of graphene on silicon. Conclusions are made based on the test …
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High-Magnification Digital Staining of FTIR Spectroscopic Images
… limitations in histopathologic examinations. FTIR spectroscopic imaging has seen groundbreaking success in the characterization of tissue, but has yet to provide practical pathological examination of biopsies. In an attempt to build a bridge between modern spectroscopic imaging techniques and …
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Characterization of FR-4 Printed Circuit Board Laminates Before and After Exposure to Lead-free Soldering Conditions
… were related to the material constituents. Fourier transform infrared (FTIR) spectroscopy and combinatorial property analysis were performed to investigate the material-level transformations due to soldering exposures.
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Photocurrent Spectroscopy Study of Graphene / Hexagonal Boron Nitride Moiré Superlattice In the Far-Infrared Regime
… fillings of the moiré band, happened in the far-infrared energy range. However, there are very few optical spectroscopic studies of these 2D materials due to many intrinsic limitations. In this thesis, I will introduce a method named Fourier-transform infrared (FTIR) photocurrent spectroscopy. I …
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Catalytic Hydrodeoxygenation of Bio-Oil Model Compounds (Ethanol, 2-Methyltetrahydrofuran) over Supported Transition Metal Phosphides
… (XPS), and chemisorption were used. In situ Fourier transform infrared (FTIR) spectroscopy was employed to monitor the surface of Ni2P during various experiments such as: CO and pyridine adsorption and transient state of ethanol and 2-MTHF reactions. The use of these techniques allowed for a …
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Infrared spectrometry as a high performance liquid chromatographic detector with application to solvent refined coal products
The development of Infrared Spectrometry as a High Performance Liquid Chromatographic detector is presented. Early work with both a conventional dispersive instrument and a Fourier Transform Infrared (FTIR) Spectrometer is presented coupled via a flow cell to size exclusion chromatography. These …
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Chemical vapor deposition of antimicrobial polymer coatings
… both candidates for antimicrobial coatings. Fourier transform infrared (FTIR) spectroscopy shows that functional groups are retained in iCVD of PDMAMS and PDEAEA, whereas essentially all fine chemical structure of the material is destroyed in plasma-enhanced CVD. It was found that the …
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Polymer blends formed by the solid state mechanical alloying process
… analysis (TGA). Mechanical testing, Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) were performed on the materials. Scanning electron micrographs (SEM) of fracture surfaces are also presented. The results suggest that the solid state mechanical alloying …
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Spectroscopic and Kinetic Studies of Hydrodenitrogenation and Hydrodesulfurization over Supported Nickel Phosphide (Ni₂P)
… (XRD), temperature-programmed reduction (TPR), Fourier transform infrared (FTIR) spectroscopy and X-ray absorbance fine structure (XAFS) spectroscopy. In situ FTIR was employed to study the acidity of Ni₂P/SiO₂ and probe the catalytic sites involved in the HDN of pyridine. Transient and …
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The use of model compounds to investigate the influence of fuel composition on the thermo-oxidative stability of fame/diesel blends
… detection. Further analytical methods included Fourier transform infrared (FTIR) and ultraviolet-visible (UV-Vis) spectroscopy as well as electrospray ionisation-mass spectrometry (ESI-MS).
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Characterization and optimization of supercritical fluid chromatography with on-line Fourier transform infrared detection
… such as IR, exists for SFC. The interface of a Fourier Transform Infrared (FTIR) spectrometer to a packed column (analytical scale) SFC is demonstrated. Characterization of mobile phases for SFC-FTIR is presented. Also, parameters for the optimization of spectral sensitivity, such as mobile …
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Inkjet printing multifunctional chromatic sensors and chromism study
… studied by attentuated total reflection (ATR)- Fourier transform infrared (FTIR), temperature-dependent Raman, colorimetric (using optical densitometry) and differential scanning calorimetry (DSC). Reversibility of PDAs has been enhanced by the formation of chelation between the carboxylic …
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Reactivity and Structure of Supported Nickel Phosphides (Ni₂P) in Deep Hydrodesulfurization Catalysis
… (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) and X-ray absorption fine structure (XAFS) spectroscopy. The use of these techniques allowed better understanding of the nature of the active sites as well as the effect of supports. Activity tests were conducted in …
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Biotribology: The Effect of Lubricant and Load on Articular Cartilage Wear and Friction
… of friction and specimen displacement data, and Fourier transform infrared (FTIR) analysis. Biochemical wear analysis showed that, under high load, the saline reference generated the most wear, hyaluronic acid produced less wear, and bovine synovial fluid produced the least. Wear was sensitive to …
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Surface Effects on Anchoring and Dynamical Interactions of Liquid Crystalline Films
… 4-n-pentyl-4' -cyanobiphenyl (5CB) via polarized Fourier-transform infrared (FTIR) and step-scan time-resolved vibrational (TRS) spectroscopies. Surface-induced alignments and electro-optical dynamics of these systems are examined in a systematic manner, in a cell whose geometry enables thorough …
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The Electro -Optical Dynamics of Nanoscale Liquid Crystalline Mesophases
… (5CB) have been examined using polarized Fourier-transform infrared (FTIR) and step-scan time-resolved (TRS) vibrational spectroscopies. A simple coarse-grained statistical dynamical model was presented to provide both qualitative and quantitative understandings of these behaviors. In the …
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