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 253 for “"Nuclear Magnetic Resonance Spectroscopy"”.
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Nuclear magnetic resonance spectroscopy and ultrasound
… phase. These changes can then be detected by nuclear magnetic resonance (NMR) in spin-lattice and spin-spin relaxation times. The objective being to develop a method capable of reducing the pulsed NMR acquisition times of slowly relaxing nuclei. The thesis describes the theoretical principles …
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Absolute tumor perfusion determined by nuclear magnetic resonance spectroscopy :
The ultimate goal of this dissertation is to describe the optimization and implementation of an NMR indicator uptake technique which can non-invasively and repeatedly measure tissue perfusion. Chapter II concerns itself with the method optimization of the NMR approaches to measuring tissue …
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Radio frequency gradient high resolutions nuclear magnetic resonance spectroscopy
… Institute of Technology, Dept. of Nuclear Engineering, 1996.
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Multinuclear Solid-State Nuclear Magnetic Resonance Spectroscopy of Microporous Materials
… other techniques such as solid-state NMR (SSNMR) spectroscopy. This thesis is focused on the study of two types of microporous materials, metal–organic frameworks (MOFs) and titanosilicates, by multinuclear SSNMR spectroscopy in combination with quantum chemical calculations for computational …
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Solid-State Nuclear Magnetic Resonance Spectroscopy of Alpha-Synuclein Fibrils
Recent solid-state NMR (SSNMR) studies on protein systems such as beta-amyloid and the prion HET-s demonstrate the applicability of these techniques towards solving 3D structures of amyloid fibrils. Alpha-synuclein is a 140-residue protein that has been implicated in Parkinson's disease. Fibrils of …
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An evaluation of Hahnemannian quinquagenimillesimal potencies using nuclear magnetic resonance spectroscopy
Dissertation submitted in partial compliance with the requirements for the Master's Degree in Technology: Homoeopathy, Technikon Natal, Durban, South Africa, 1997.
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Structural studies of the pleckstrin protein by nuclear magnetic resonance spectroscopy
Das Pleckstrinprotein ist das Hauptsubstrat von Protein Kinase C (PKC) in Blutplättchenzellen. Die Phosphorylierung Pleckstrins setzt Prozesse in Gang, die zur Aktivierung des Blutplättchens, Blutgerinnung und Wundverschluss führen. Pleckstrin besteht aus drei Domänen: den prototypischen pleckstrin …
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Phosphorus-31 nuclear magnetic resonance spectroscopy of human uterus and placenta
This thesis aims to demonstrate the usefulness of Nuclear Magnetic Resonance Spectroscopy in understanding normal human placental and uterine metabolism as well as its application in the study of gestational and gynecological disorders. We have used phosphorus-31 NMR spectroscopy on isolated …
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Molecular and spin dynamics in solid state nuclear magnetic resonance spectroscopy
Nuclear Magnetic Resonance (NMR) spectroscopic data often involve spatial and spin dynamics and interference phenomena between the two. Experimental results are presented which demonstrate several of these phenomena and exploitation of these anomalies to acquire and improve knowledge regarding …
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Structure and dynamics studies by solid-state nuclear magnetic resonance spectroscopy
… a review of recent progress in solid state NMR spectroscopy. The importance of directly observing ions in biological systems is discussed, and the advantages of 205T1 spectroscopy are noted of. Theoretical framework of the NMR experiments is described in chapter 2. The third chapter presents the …
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Dipolar recoupling and decoupling in solid state nuclear magnetic resonance spectroscopy
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1995.
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The characterization of starches and maltodextrins by proton nuclear magnetic resonance spectroscopy
… of branching in $\alpha$-glucans using proton nuclear magnetic resonance (NMR) has been developed. Instrument parameters and sample conditions were investigated for their effect on determining the $\alpha$-(1,4)/$\alpha$-(1,6) linkage ratios of starches. Two methods were developed using 0.6 N …
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Studies of organophosphorus compounds by nuclear magnetic resonance spectroscopy with two frequency dimensions
… has been prepared and studied by n.m.r. spectroscopy.
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Quantitative Analysis of Acetylsalicylic Acid by q-NMR (Quantitative-Nuclear Magnetic Resonance Spectroscopy)
… compounds as the preferred technique. The proton nuclear magnetic resonance (NMR) technique has an inherent ability to quantify a given analyte and may be used to quantify organic compounds. Quantitative nuclear magnetic resonance spectroscopy (q-NMR) of acetylsalicylic acid (ASA) was conducted …
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Geometric Algorithms for Protein Structure Determination Using Measurements From Nuclear Magnetic Resonance Spectroscopy
… treatments and therapeutics. Measurements from nuclear magnetic resonance spectroscopy (NMR) reveal information about the structures of proteins, but building accurate atomic-resolution models from such measurements is an arduous task. The ambiguity and uncertainty of these measurements, and the …
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Instruments and Domains of Knowledge: The Case of Nuclear Magnetic Resonance Spectroscopy, 1956-1969
In this thesis, I traced the development of Nuclear Magnetic Resonance (NMR) Spectroscopy through the pages of the Journal of Organic Chemistry (JOC) from the year 1956 to 1969 to understand how organic chemists and Varian Associates?the makers of the first commercial NMR spectrometers?negotiated …
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Essential Protein Factors in pre-mRNA splicing : A Structural Study by Nuclear Magnetic Resonance Spectroscopy
… Sm proteins are common components of small nuclear ribonucleoprotein particles (snRNPs), which are assembled by a protein complex that contains SMN. The structure of the SMN Tudor domain exhibits a five stranded ?-barrel, which resembles the fold of Sm proteins. The Tudor domain of SMN binds …
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