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 284 for “"ft-ir"”.
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Isotope edited FT-IR of peptides
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1996.
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Characterization of cellulose esters via GPC/FT-IR
… of a Fourier transform infrared spectrometer (FT-IR) as an in-line detector for quantitative gel permeation chromatography (GPC). GPC/FT-IR has been used in the analysis of polymeric materials in the past, but not for quantifying the substituent content of cellulosics. This work has identified …
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Ft-Ir Study of the Dynamics of Entangled Polymer Melts
… using polarized Fourier-Transform infrared (FT-IR) spectroscopy. Based on the reptation model, the motion of a chain in the presence of topological entanglements is that of a one dimensional random walk along the chain contour. This motion allows the end portions of the chain to escape the …
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Computation tools for the Fourier transform infrared (FT-IR) spectroscopic imaging
Over the pass 60 years, infrared (IR) spectral imaging has become an important tool with various applications such as identifying chemical distributions of biomedically relevant components in tissue, investigating biomedical and biological processes, and studying development of diseases …
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Computational methods for cancer diagnosis and prognosis from FT-IR spectroscopy data
… pathology using fourier transform infrared (FT-IR) spectroscopy imaging. We employ tissue microarrays (TMAs) to record IR imaging data and adopt elaborated computational and analytical algorithms and statistical methods to recognize patterns and to construct robust systems. We firstly suggest …
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FT-IR spectroscopy technology, market evolution and future strategies of Bruker Optics Inc.
… explores the technology and market evolution of FT-IR spectroscopy over its nearly forty year history to aid in determining future product design and marketing strategies for an industry-leading firm, Bruker Optics. As a benchmark, a universal performance metric was developed that combined key …
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A study of FT-IR spectroscopy for the identification and classifcation of haematological malignancies
… in this thesis was to explore the use of FT-IR spectroscopy, as a complementary clinical tool for haematological laboratory analysis. FT-IR spectra were measured from air-dried and frozen cell lines derived from lymphoma, lymphoid, myeloid leukaemia and normal and chronic lymphocytic …
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Einsatz der FT-IR-Mikrospektroskopie und multivariater Auswertealgorithmen zur Identifizierung und Klassifizierung von Tumorgeweben
… Gewebedünnschnittes anhand der aufgenommenen FT-IR-Spektren sichtbar zu machen und diese mit dem konventionell gefärbten Schnitt und der autoradiographischen Aufnahme zu vergleichen. Dazu wurde ein Messsystem bestehend aus einem FT-IR-Spektrometer mit Mikroskop und einem computergesteuerten …
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Development Of Quantitative FT- IR Methods For Analyzing The Cure Kinetics Of Epoxy Resins
… the cure chemistry, quantitative analysis of the FT-IR response has been developed for describing the epoxy-amine curing reaction as well as monitoring the hydrogen bonding that occurs in these systems The FT-IR analysis includes (i) quantitative deconvolution of complex peaks into individual …
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Πολυπαραμετρική ανάλυση FT-IR δειγμάτων οίνου υπό ζύμωση και συγκριτική αξιολόγηση με βιβλιογραφικά δεδομένα
… υπερύθρου με μετασχηματισμό Fourier (FT-IR) για την πολυπαραμετρική ανάλυση δειγμάτων μούστου και οίνου υπό ζύμωση, με στόχο την περιγραφική και συγκριτική αξιολόγηση της χημικής τους κατάστασης σε πραγματικές συνθήκες οινοποιείου. Τα δείγματα συλλέχθηκαν κατά τη διάρκεια της …
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Probing peptide binding to the second PDZ domain of hPTP1E using FT-IR and MS
… of human protein tyrosine phosphatase 1E using FT-IR and mass spectrometry. This PDZ is known to bind the C-terminal motif X-Ser/Thr-Val. MS demonstrated the formation of a 1:1 complex between PDZ and ENEQVSAV but not with peptides ENEQVCAV and KDDEVYYV due to substitution of Ser in -2 position …
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Vibrational spectroscopic techniques (Raman, FT-IR and FT-NIR spectroscopy) as a means for the solid-state structural analysis of pharmaceuticals
… of vibrational spectroscopic techniques (Raman, FT-IR and FT-NIR spectroscopy) as a means for the solid-state structural analysis of pharmaceuticals. Budesonide, fluticasone propionate, salbutamol hemisulfate, terbutaline hemisulfate, ipratropium bromide, polymorphic forms of salmeterol xinafoate …
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Immobilization of Ru(bpy)(3)(2+) for Electrogenerated Chemiluminescent Sensors and Application of Interdigitated Array Electrodes in Transmission Ft-Ir Spectroscopy
A flow cell of novel design was used to follow the changes occurring in cation-loaded Nafion films in response to variations of the humidity of a nitrogen purge gas flowing through the cell. The structural changes occurring due to the binding of water to these cation-exchanged membranes was …
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Hyphenated fourier transform infrared spectrometry: techniques for separations and analysis
… instrumentation and application of hyphenated FT-IR techniques specifically involving supercritical fluid extraction (SFE), supercritical fluid chromatography (SFC), and liquid chromatography (LC). Three studies are presented. The first involves the application of SFE/FT-IR towards the …
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Einfluss von Bewirtschaftungsmaßnahmen auf Menge und Zusammensetzung unterschiedlich stabiler Fraktionen der organischen Bodensubstanz
… Darüber hinaus sollen der Einfluss von Bewirtschaftungsmaßnahmen auf Menge und Zusammensetzung dieser OBS-Anteile und Zusammenhänge zwischen Fourier Transform Infrarot (FT-IR)-Spektroskopiedaten und der Kationenaustauschkapazität (KAK) der OBS analysiert werden. Für die Untersuchungen …
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Mid infrared spectroscopic imaging and tomography
Fourier Transform Infrared (FT-IR) Spectroscopic Imaging is an optical technique that simultaneously provides morphological (two dimensional) and mid-infrared spectral (one dimensional) information for a specimen under observation. In this dissertation, we develop a new instrument that extends the …
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Structural and morphological characterization of hydrozincite and its interaction with organic molecules
… and mechanical properties, and have inspired ideas for the design and synthesis of biomimetic functional materials. The organic templates play an important role in directing assembly of the mineral/organic composites, and in controlling the nucleation and subsequent crystallization. …
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Applications of supercritical fluid technologies to the analysis of food components
… detection (FID), Fourier-transform infrared (FT-IR) detection, and mass spectrometry (MS) detection. Although reports in the literature indicated that only one derivatized component was detected under GC conditions, the SFC analysis of peracetylated aldonitrile derivatives of monosaccharides …
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Supercritical fluid extraction/chromatography and Fourier transform infrared spectrometry: methods optimization and applications
… and Fourier transform infrared spectrometry (FT-IR). In order to study the effects of a supercritical mobile phase on the resulting IR spectra, carbon dioxide was compared to xenon as a supercritical fluid mobile phase for flow cell SFC/FT-IR. A packed capillary column (30 cm x 320 μm, …
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