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Tesi sul tema "NMR"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Hoffmann, Dirk. "NMR-Untersuchungen an Nanokapsel-Dispersionen - NMR investigations on nanocapsule dispersions." Gerhard-Mercator-Universitaet Duisburg, 2001. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-05302001-102514/.

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Abstract (sommario):

Nanocapsules are generally considered as spherical, hollow structures. Important potential applications are pharmaceutically related such as drug targeting and controlled release. Typically, the capsules consist of a polymeric wall, filled with an oil which can dissolve lipophilic agents. To enable a stable aqueous dispersion, the capsule surface is covered by an amphiphilic surfactant. Nanocapsule-dispersions were investigated by means of solid-state nmr. Cross polarization experiments revealed the morphology of the polymeric wall. Further, the spin-lattice relaxation times for the proton mag

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2

Lenz, Eva-Maria. "Multinuclear NMR and HPLC-NMR spectroscopic studies on xenobiotic metabolism." Thesis, Birkbeck (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267785.

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3

Lee, Jaehyuk. "A portable NMR." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609637.

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4

Karvonen, V. (Ville). "NMR-spektroskopia lääkeaineanalytiikassa." Bachelor's thesis, University of Oulu, 2017. http://urn.fi/URN:NBN:fi:oulu-201705232041.

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Abstract (sommario):

NMR-spektroskopia perustuu ytimien ydinmagnettisen resonanssin mittaamiseen. Menetelmä on kasvattanut suosiotaan lääkeaineanalytiikassa aina ilmiön löytämisestä lähtien. Tässä tutkielmassa perehdytään NMR-spektroskopian teoriaan ja sen käyttöön lääkeaineanalytiikassa, jossa NMR-menetelmä tulee päivä päivältä tärkeämmäksi ja yleisemmäksi. NMR-spektroskopia on nopea, informatiivinen, eikä kalliiden tai monimutkaisten standardien käyttö ole menetelmässä tarpeellista. Menetelmää voidaan periaatteessa soveltaa kaikille ydinaktiivisille ytimille, mutta yleisimmin menetelmällä mitataan 1H-ydintä.

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5

Norris, David G. "NMR flow imaging." Thesis, University of Aberdeen, 1986. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU009818.

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The phase-encoded method of NMR flow imaging is examined in detail. The motion of isochromatic groups in the direction of suitably balanced magnetic field gradients will give a phase change in the NMR signal directly proportional to the velocity, acceleration, or higher derivative of position, dependent upon the form of the field gradient. If a simple bipolar pulse is used then the phase change, for isochromats moving with constant velocity, will be proportional to the velocity. If two such pulses are placed back to back then the phase change is proportional to the acceleration. The motion of

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6

Vuorinen, J. (Jere). "Maaperänäytteiden NMR-analyysi." Bachelor's thesis, University of Oulu, 2018. http://urn.fi/URN:NBN:fi:oulu-201812183292.

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Abstract (sommario):

Tässä tutkielmassa olemme kiinnostuneita miten NMR-spektroskopiaa voidaan käyttää maaperänäytteiden tutkimiseen. Maaperässä on erilaisia hiiliyhdisteitä ja niitä voidaan havaita kiinteän aineen 13C NMR-spektroskopialla. Tutkielmassa käydään läpi perinteisen NMR:n ja kiinteän aineen NMR:n perusasioita. Lopuksi perehdytään maaperänäytteiden tutkimiseen.

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7

Sarala, J. (Jouni). "Low field NMR." Bachelor's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201907252707.

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Abstract (sommario):

Abstract. The subject of this thesis is NMR in low magnetic field. Traditionally NMR instruments utilize a superconducting high field magnet, but recently, compact instruments are getting more common with the use of lower magnetic fields. In this thesis, the basic theory of NMR is explained and the instrumentation and different ways of producing homogeneous magnetic fields are described. An experimental set-up was constructed and tested. The theory of relaxation and dependence of resonance frequency on the magnetic field were demonstrated.

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8

De, Biasi Federico. "Matrix-Assisted NMR." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3424861.

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Abstract (sommario):

During the last decades, the interest of chemistry toward increasingly sophisticated processes has grown exponentially. As a consequence, the evolution of the systems under investigation has been necessarily paired with the development of modern methodologies capable of handling the enormous amount of data stemming from samples of great complexity. Among the many examples in the literature, one of the biggest ongoing challenges is the analysis of mixtures, from reaction crude extracts to biological fluids like blood and urine. Indeed, chromatography has been - and still remains - one of the pr

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9

Krishnan, Mangala Sunder. "Applications of irreducible spherical tensor operators to NMR and NQR spectroscopy." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75771.

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The thesis extends the concept of Irreducible Spherical Tensor Operators to spin dynamics problems in Nuclear Magnetic and Quadrupole Resonance Spectroscopy. NQR and solid state NMR deal with spin systems which behave as effective single spins in many, pulsed experiments, or as multispin systems when the dipolar interactions among spins cannot be neglected. The thesis considers problems in both areas. New analytic results are derived in the thesis for pure NQR spectroscopy and for the effect of radiofrequency fields in the presence of electric quadrupolar interaction. Three-pulse experiments a

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10

Ferrari, Maude, J. P. Mérel, Sébastien Leclerc, Christian Moyne, and Didier Stemmelen. "Study of dispersion by NMR: comparison between NMR measurements and stochastic simulation." Diffusion fundamentals 18 (2013) 11, S. 1-4, 2013. https://ul.qucosa.de/id/qucosa%3A13718.

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Abstract (sommario):

Dispersion remains, today, a highly topical subject. Our group has been interested in characterizing this phenomenon by pulsed-field-gradient NMR technique. Direct measurement of the dispersion coefficient can be done with a Pulsed Gradient Spin Echo (PGSE) sequence by assuming that the asymptotic regime is reached. In unsteady state, the propagator formalism is used. To better understand these measurements, the NMR experiment is modeled using a stochastic simulation (random walks) and compared with experimental results. The comparison is made for the simple case of Poiseuille flow in a circul

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11

Perlo, Juan. "Single sided NMR tomography /." Aachen : Shaker, 2006. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016031200&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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12

Rourke, David E. "Selective pulses in NMR." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259620.

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13

Cheah, Kien Yoo. "NMR studies of catalysis." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262980.

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14

Veitch, Nigel Charles. "NMR studies of peroxidases." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306025.

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15

Harvey, P. R. "Hyper-fast NMR imaging." Thesis, University of Nottingham, 1991. http://eprints.nottingham.ac.uk/13753/.

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Abstract (sommario):

The work presented in this thesis was carried out in the Physics Department at the University of Nottingham between October 1988 and October 1991. It is the original work of the author except where indicated by reference. This thesis describes the continuation of the development of Echo Volumar Imaging (EVI) to facilitate snapshot imaging of a volume within the human body. Variants of the technique which have also been investigated include a spin echo version, SE-EVI, and a zoomed version ZEVI. All formats acquired data in a modulus fashion in times ranging from 64 ms to 120 ms. Hardware limit

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16

Furby, Michael Ian Charles. "NMR of liquid crystals." Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263471.

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17

Welch, John. "Multidimensional in vivo NMR." Thesis, University of Oxford, 2001. http://ora.ox.ac.uk/objects/uuid:876ed795-9e23-4d53-a407-0a29f7c9ea21.

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Abstract (sommario):

A proton nuclear magnetic resonance spectrum of the brain in vivo contains peaks from every proton-containing molecule in the brain. Sensitivity limitations mean that only those molecules present at concentrations of at least a few millimolar are detectable in a reasonable period of time; this still leaves many important molecules such as amino acids and other small metabolites. Most of their resonance frequencies fall in the region between 1.0 and 4.5 p.p.m. A typical linewidth in vivo is about 0.05 p.p.m., so the number of distinct peaks observable is restricted. The use of two-dimensional N

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18

Jaroszkiewicz, E. M. "NMR of entangled polymers." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371126.

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19

McJury, Mark. "NMR microscopy at 500MHz." Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293694.

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20

Ghaoui, Nora. "Process applications of NMR." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621156.

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21

Bendell, David. "NMR of mycoprotein systems." Thesis, University of Sunderland, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284753.

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22

Bushell, Mary-Clare. "Intermediate scale NMR imaging." Thesis, University of Surrey, 1985. http://epubs.surrey.ac.uk/847283/.

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Abstract (sommario):

The design, construction and calibration of an intermediate scale NMR imaging system is described. The system is based on a 7" diameter, room temperature bore superconducting magnet at a field of 0.4T. Using selective excitation and projection reconstruction techniques, the production of density, spin-lattice and spin-spin relaxation weighted images has been achieved. An investigation of the feasibility of in-vivo tissue characterisation using NMR parameters has been carried out. Tissue characterisation using healthy animals of different ages, sex and species has shown that characterisation wi

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23

Gerhalter, Teresa. "Characterization of the dystrophic muscle by ²³Na NMR and ¹H NMR T₂ spectrum." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS219/document.

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Le but de la thèse était d'étudier la sensibilité de nouveaux biomarqueurs RMN visant à quantifier les changements pathologiques dans le muscle dystrophique. La dystrophie musculaire (DM) désigne un groupe hétérogène de maladies avec une atrophie musculaire progressive associée à un état de faiblesse. Elle est caractérisée par des degrés variables de nécrose, de régénération, de troubles de l'homéostasie ionique, d'inflammation chronique et finalement par le remplacement des muscles par du tissu fibro-graisseux. Mon objectif était d’évaluer la RMN du ²³Na et les techniques avancées de mesure d

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24

Francke, Volkhard. "Festkörper-NMR-, 129Xe-NMR- und BET-Studien an adsorbierten benzoiden Verbindungen auf mesoporösen Materialien." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=964532301.

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25

Wiesmath, Anette. "NMR methods for strongly inhomogeneous magnetic fields: application on elastomers using the NMR-mouse." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=96487721X.

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26

Hartl, Rainer. "Berechnung der NMR-Struktur der PPARgamma-LBD und Hochdruck-NMR-Messungen an HPr I14A." kostenfrei, 2008. http://www.opus-bayern.de/uni-regensburg/volltexte/2009/1025/.

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27

Uluca, Boran [Verfasser]. "Solid-State NMR and DNP-Enhanced NMR Studies on Intrinsically Disordered Proteins / Boran Uluca." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2018. http://d-nb.info/1164763237/34.

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28

Dvoyashkina, Nina, Dieter Freude, Christopher F. Seidler, Michael Wark, and Jürgen Haase. "Composite fuel cell materials studied by MAS PFG NMR diffusometry and MAS NMR spectroscopy." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-198097.

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29

Dvoyashkina, Nina, Dieter Freude, Christopher F. Seidler, Michael Wark, and Jürgen Haase. "Composite fuel cell materials studied by MAS PFG NMR diffusometry and MAS NMR spectroscopy." Diffusion fundamentals 24 (2015) 12, S. 1, 2015. https://ul.qucosa.de/id/qucosa%3A14526.

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30

Palfreyman, Stuart A. "Sonically induced narrowing of the NMR spectra of solids and other novel NMR techniques." Thesis, Aston University, 1996. http://publications.aston.ac.uk/9610/.

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Abstract (sommario):

A typical liquid state NMR spectrum is composed of a number of discrete absorptions which can be readily interpreted to yield detailed information about the chemical environment of the nuclei found within the sample. The same cannot be said about the spectra of solid samples. For these the absorptions are typically broad, featureless and yield little information directly. This situation may be further exacerbated by the characteristically long T1 values of nuclei bound within a solid lattice which, consequently, require long inter-sequence delays that necessitate lengthy experiments. This work

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31

Candoli, Davide. "Simulation of NMR/NQR observables and spin control for applications in Quantum Science." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Abstract (sommario):

Il mio progetto di tesi consiste nello sviluppo di un programma per la simulazione numerica di esperimenti di risonanza magnetica/di quadrupolo nucleare (NMR/NQR), con l’obiettivo di realizzare una connessione tra la teoria e le evidenze sperimentali: dopo aver ricostruito la dinamica degli spin nucleari prevista in base alla teoria, il software simula a partire da questa i risultati delle misure, presentandoli in una forma confrontabile con i dati ottenuti in laboratorio. L’intero lavoro è fondato su uno studio completo e approfondito della descrizione quantistica dei fenomeni di interesse, l

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32

Boero, Giovanni. "Integrated NMR probe for magnetometry /." [S.l.] : [s.n.], 2000. http://library.epfl.ch/theses/?nr=2211.

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33

Schick, Martin Christopher. "High pressure NMR of ubiquitin /." Zürich, 1998. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=12586.

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34

Kaufmann, Ilja. "Funktionelle NMR-Mikroskopie an Pflanzenwurzeln." kostenfrei, 2008. http://www.opus-bayern.de/uni-wuerzburg/volltexte/2009/3415/.

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35

Titze, Andreas. "87Rb-NMR-Untersuchungen an Trirubidiumhydrogendisulfat." [S.l. : s.n.], 2000. http://ArchiMeD.uni-mainz.de/pub/2000/0113/diss.pdf.

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36

Gröger, Adriane. "NMR-spektroskopische Untersuchungen von Proteinen." [S.l.] : [s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=962026921.

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37

Rademacher, Martin. "NMR-spektroskopische Untersuchungen an Fettsäurebindungsproteinen." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=964224984.

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38

Nikkhou, Aski Sahar. "NMR Studies of Inclusion Compounds." Doctoral thesis, Stockholm University, Department of Physical, Inorganic and Structural Chemistry, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-8223.

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<p>This thesis presents the application of some of the NMR methods in studying host-guest complexes, mainly in solution. The general focus of the work is on investigating the reorientational dynamics of some small molecules that are bound inside cavities of larger moieties. In the current work, these moieties belong to two groups: cryptophanes and cyclodextrins. Depending on the structure of the cavities, properties of the guest molecules and the formed complexes vary. Chloroform and dichloromethane are in slow exchange between the cage-like cavity of the cryptophanes and the solvent, on the c

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39

Dücker, Eibe Behrend. "Enhancement Strategies in NMR Spectroscopy." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E3E4-9.

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40

Wang, Mingfei. "Moderne Festkörper-NMR an Funktionspolymeren." Aachen : Shaker, 2004. http://deposit.d-nb.de/cgi-bin/dokserv?idn=972768122.

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41

Stonehouse, Jonathan. "New techniques in NMR spectroscopy." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360628.

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42

McIntyre, D. J. O. "NMR microscopy at 9.4 Tesla." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386215.

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43

Harvey, Timothy Scott. "Protein structure from NMR data." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305965.

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44

Spickett, Corinne Michelle. "NMR studies of cellular bioenergetics." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257961.

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45

Lumb, Kevin J. "NMR studies of lysozyme complexes." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291521.

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46

Hughes, Colan Evan. "New techniques in NMR spectroscopy." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297524.

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47

Carr, M. D. "NMR studies of oxidative phosphorylation." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382584.

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48

Wormald, Claire. "NMR studies of #alpha#-lactalbumins." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303083.

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49

Jeffrey, F. M. H. "NMR studies of cardiac energetics." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370277.

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50

Quirk, P. G. "NMR studies of bioenergetic systems." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379927.

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