Dissertations / Theses on the topic 'Mass and Energy spectrometry'
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Tsutsui, Yuko. "EXPLORING FUNCTIONAL AND FOLDING ENERGY LANDSCAPES BY HYDROGEN-DEUTERIUM EXCHANGE MASS SPECTROMETRY." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1196199391.
Full textFu, Tingting. "3D and High Sensitivity Micrometric Mass Spectrometry Imaging." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS218/document.
Full textMass spectrometry imaging has been shown of great interest in addressing biological questions by providing simultaneously chemical and spatial information. Particularly, TOF-SIMS is well recognized for its high spatial resolution (< 1 µm) which is essential in disclosing chemical information within a submicron area. The increasing use of TOF-SIMS in characterizing biological samples has greatly benefited from the introduction of new cluster ion sources. However, the ionization/desorption of the analytes under impacts of large clusters is still poorly understood. On the other hand, technically, current commercial TOF-SIMS instruments generally cannot provide sufficient mass resolution or mass accuracy for molecular identification, making analyses of complex biological systems especially challenging when no MS/MS fragmentation is available. Thus this thesis is aimed to get a better understanding of ion production under cluster impacts, to explore the MS/MS capability of the parallel imaging MS/MS Spectrometer (PHI nanoTOF II), as well as to apply TOF-SIMS to map important wood metabolites with high spatial resolution.In order to understand ion production under impacts of massive argon clusters, internal energy distributions of secondary ions were measured using survival yield method which involves the analyses of a series of benzylpyridinium ions. Investigation of various impacting conditions (energy, velocity, cluster size) suggested that velocity of the clusters play a major role in internal energy distribution and molecular fragmentation in the low energy per atom regime (E/n < 10 eV). The MS/MS fragmentation and parallel imaging capabilities of the newly designed PHI nanoTOF II spectrometer were evaluated by in situ MS/MS mapping of bioactive metabolites rubrynolide and rubrenolide in Amazonia wood species Sextonia rubra. Then this parallel imaging MS/MS technique was applied to perform in situ identification of related precursor metabolites in the same tree species. 2D and 3D TOF-SIMS imaging were carried out to target the plant cells that biosynthesize rubrynolide and rubrenolide. The results led to the proposal of a possible biosynthesis pathway of these two metabolites. In addition, to expand the application of TOF-SIMS imaging in wood chemistry analysis, radial distribution of wood extractives in the heartwood of European larch was also investigated
Rowland, Tyson G. "Accurate ionic bond energy measurements with TCID mass spectrometry and imaging PEPICO spectroscopy." Scholarly Commons, 2012. https://scholarlycommons.pacific.edu/uop_etds/809.
Full textBegley, Ian S. "A study of isotope ratio measurement by inductively coupled plasma mass spectrometry." Thesis, Loughborough University, 1996. https://dspace.lboro.ac.uk/2134/12223.
Full textSassin, Nicholas A. "Optical and collisional energy transfer processes in fluorescent dyes, quaternary alkylammonium and peptide cations." abstract and full text PDF (free order & download UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3307572.
Full textSmith, Lori Lyn. "Effectiveness of low energy collisional activation methods for automated peptide sequencing by tandem mass spectrometry." Diss., The University of Arizona, 2003. http://hdl.handle.net/10150/280450.
Full textYau, Pui Yip. "Thresholds for production of gaseous ions in matrix-assisted laser desorption/ionisation mass spectrometry of bio-molecules." Thesis, University of Warwick, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389459.
Full textYang, Zhongyu. "Performance Advantages of Maximum Likelihood Methods in PRBS-Modulated Time-of-flight Energy Loss Spectroscopy." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/YangZ2003.pdf.
Full textBottrill, Andrew R. "High-energy collision-induced dissociation of macromolecules using tandem double-focusing/time-of-flight mass spectrometry." Thesis, University of Warwick, 2000. http://wrap.warwick.ac.uk/52318/.
Full textWilliams, Jonathan Paul. "Ion structure determination using novel time-of-flight techniques and mass-analysed ion kinetic energy spectrometry." Thesis, Swansea University, 2000. https://cronfa.swan.ac.uk/Record/cronfa42653.
Full textSaraswat, Suraj. "Investigation of Energy Transfer, Quantification, and Localization of Peptides and Proteins by Fluorescence Spectroscopy and Mass Spectrometry." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1341599821.
Full textTreufeld, Imre. "I. Polymer Films for High Temperature Capacitor ApplicationsII. Differential Electrochemical Mass Spectrometry." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1465503063.
Full textAngelico, Vincent James. "The development of a mass spectrometry-based technique that uses low energy ion-surface collisions to characterize surfaces." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/280148.
Full textAl-Qahtani, Khalid Mohammad. "Developing liquid chromatography-mass spectrometry strategies for investigating energy metabolism with application to isocitrate dehydrogenase mutations in cancer : development and application of methods for qualitative and quantitative analysis of TCA cycle metabolites using liquid chromatography coupled to mass spectrometry." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:354009b1-30a5-43a0-bbf1-5907437ea53a.
Full textYang, Xi. "Characterization of Self-Assembled Monolayers by Low Energy Reactive Ion Scattering: Influences of Terminal Group Composition and Structure on Ion-Surface Interaction." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/195240.
Full textNaylor, J. C. "The study of sputtering by concentration modulated absorption spectroscopy and the study of internal energy effects on collision induced decomposition mass spectrometry." Thesis, Swansea University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638299.
Full textZhang, Yifan. "Metabolic Energy Balances in Ketotic Rat Brain." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1370371336.
Full textMahdi, A. M. "A mass spectrometric study of translational energy release in the reactions of gas phase cations." Thesis, University of Essex, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379376.
Full textHennemann, Bruno Luís. "Energia de interação cátion-ânion de líquidos iônicos dicatiônicos em fase gasosa." Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/11976.
Full textA espectrometria de massa com ionização por electrospray (ESI-MS) com energia de colisão induzida foi utilizada para realizar um estudo compreensivo sobre as energias de interação entre cátions e ânions de líquidos iônicos dicatiônicos. Foi avaliada a influência do ânion ([Br]-, [NO3]-, [BF4]-, [SCN]- e [Cl]-) e o tamanho da cadeia alquílica espaçadora (n=4,6,8 e 10) na energia de interação dos líquidos iônicos dicatiônicos, derivados do 1,n-bis(3-metilimidazolil-1-íneo)alcano em fase gasosa. Três experimentos foram realizados para a determinação da energia de interação cátion-ânion: (i) ESI-MS de misturas binárias (1:1) de líquidos iônicos com diferentes ânions ou cátions; (ii) ESI-MS de cada líquido iônico individualmente com variação da energia de colisão aplicada e determinação da energia de centro de massa (Ecm) usando a relação entre intensidade do íon precursor e somatório dos íons. (iii) Por fim, foi obtida a taxa de variação da intensidade do íon precursor em função energia de colisão de todos os líquidos iônicos. A partir desta correlação, foi obtida a constante de dissociação cátion-ânion dos líquidos iônicos dicatiônicos. Os resultados mostraram o aparecimento de espécies mistas (exemplo: [Bis-C8(MIM)22XY]- e [C8(MIM)XY]-) nos experimentos das misturas. A aplicação da energia de colisão induzida nas misturas também permitiu estimar qual ânion interage mais efetivamente com o cátion. Ainda para este experimentos, os líquidos iônicos dicatiônicos com os ânions [Cl]-, [Br]- e [NO3]- apresentaram maior energia de interação cátion-ânion. A escala em ordem crescente de energia de interação foi [BF4]-< [SCN]- < [NO3]- < [Br]- < [Cl]-. Os valores de Ecm para os líquidos iônicos com diferentes ânions não indicou tendências na energia de interação em relação fatores estruturais tais como raio iônico e volume molecular. Dessa forma, para os ânions, foi encontrado que a interação aumenta na seguinte ordem: [SCN]-<[Cl]-<[NO3]-<[Br]-<[BF4]-. Por outro lado, o aumento do tamanho da cadeia alquílica espaçadora causou um aumento na energia de interação cátion-ânion. Com o aumento da concentração do líquido iônico, foi observado um aumento na intensidade do íon precursor.
Wishart, Cornelia. "Measurement of total body water (TBW) and total energy expenditure (TEE) using stable isotopes." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/44135/1/Cornelia_Wishart_Thesis.pdf.
Full textSolders, Andreas. "Precision mass measurements : Final limit of SMILETRAP I and the developments of SMILETRAP II." Doctoral thesis, Stockholms universitet, Fysikum, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-56777.
Full textAt the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 9: Accepted.
Al, Mahmoud Alsheikh Amer. "Modelování chemických procesů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-233403.
Full textSteichen, Valentin. "Développement d’un analyseur en énergie pour la caractérisation des hautes atmosphères neutres et ionisées terrestre et planétaires." Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS635.
Full textStudying the dynamic of particles in the thermosphere – ionosphere and in the exosphere of bodies in the Solar System allows to deepen our understanding of these critical regions that are the bridge between a planet and space. The aim of my thesis was to develop, build and test a neutral particles energy analyser for studying the upper planetary atmospheres: INEA (Ion and Neutral Energy Analyser). The instrument aims to measure the energy structure of the neutral and ion constituents present in the upper atmosphere. To achieve this challenging task, INEA relies on two concepts: an innovative ion source that is based on a carbon nanotube array as an electron emitter and an electrostatic energy analyser which is able to image directly the energy distribution of the particles. During these three years of thesis, a numerical model of INEA was developed in order to meet the instrumental objectives imposed by the measurements needed to characterize the upper atmospheres. At the same time, I have been working on the development of an ion source, also necessary for the optimal operation of INEA, based on the use of carbon nanotubes as electron emitters. The development of the detector, another important part of the instrument has also been conducted. Following the numerical modelling and the work achieved on the different parts of the instrument, a first prototype of INEA has been designed and assembled. This prototype being currently tested. With the work achieved during this thesis, we have been able to propose two instruments for future space missions: M-INEA on the M-MATISSE mission proposed for the ESA M7 call for project, recently selected for a phase A study up to mid-2026, and PSEE, an electron emitter dedicated to the control of PRELUDE SAT, a 6U CubeSat developed by two Japanese universities scheduled to be launched mid-2025
Launay, Kévin. "Synthèse de nouveaux espaceurs alcoxyamine pour la préparation de polymères encodés." Electronic Thesis or Diss., Aix-Marseille, 2020. http://www.theses.fr/2020AIXM0487.
Full textThe constant growth of the digital world requires more and more storage space. Data is however stored on devices whose life-times are counted in decades at best. Therefore, leading companies of the digital world like Microsoft have engaged efforts to produce DNA-based storage systems. This polymer however suffers from a major disadvantage: its structure is fixed by biology. Conversely, the structure of synthetic polymers can be chosen and adjusted to fit the user’s requirements in terms of writing and reading. This thesis is included in a project involving digital storage of information on poly(phosphodiester)s which proved able to produce polymer chains of size comparable to man-made DNA strands. These polymers are sequenced in mass spectrometry by dissociation of the phosphodiester bonds between the bits in MS/MS experiments. In order to facilitate their sequencing, the longest chains were separated into sub-segments through the inclusion of spacers with a low bond dissociation energy: alkoxyamines. Sub-segments were separated in MS/MS and sequenced in pseudo-MSpower3 experiments. However, the reading could not be automatized because of several undesired peaks. Indeed, the flexibility of the chain was so that the highly reactive carbon-radical issued from alkoxyamine fragmentation induced several undesired dissociation pathways leading to their emergence. Two strategies were pursued in this thesis to prevent these side reactions: reducing the radical reactivity and increasing the stiffness of the backbone structure. The first one proved insufficient but the second one allowed complete, automated millisecond sequencing
Manea, Vladimir. "Penning-trap mass measurements of exotic rubidium and gold isotopes for a mean-field study of pairing and quadrupole correlations." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112246/document.
Full textThe most complex nuclei are situated between the magic and the mid-shell ones, in regions known for sudden changes of the trends of nuclear observables. These are the so-called shape-transition regions, where the nuclear paradigm changes from the vibrational liquid drop to the static rotor. With few exceptions, nuclei in these regions are radioactive, with half-lives dropping into the millisecond range.Complementing the information obtained from the low-lying excitation spectrum, nuclear binding energies and mean-square charge radii are among the observables most sensitive to these changes of nuclear structure. In the present work, a study of the shape-transition phenomenon is performed by measurements of radioactive nuclides produced by the ISOLDE facility at CERN. The masses of the neutron-rich rubidium isotopes 98−100Rb and of the neutron-deficient gold isotopes 180,185,188,190,191Au are determined using the Penning-trap mass spectrometer ISOLTRAP. The mass of 100Rb is determined for the first time. Significant deviations from the literature values are found for the isotopes 188,190Au. A new experimental method is presented, using a recently developed multi-reflection time-of-flight mass spectrometer as a beam-analysis tool for resonance-ionization laser spectroscopy. The new method opens the path to measurements of atomic hyperfine spectra with ISOLTRAP, from which charge radii and electromagnetic moments of radioactive nuclides can be extracted. The properties of the studied nuclides map the borders of two prominent regions of quadrupole deformation, which constrain the fine balance between pairing and quadrupole correlations in the nuclear ground states. This balance is studied by the Hartree-Fock- Bogoliubov (HFB) approach. The sensitivity of the shape-transition phenomenon to the strength of pairing correlations is demonstrated. In particular, the strong odd-even staggering of charge radii in the mercury isotopic chain is shown to result in the HFB approach from the fine interplay between pairing, quadrupole correlations and quasi-particle blocking
Lemire, Sharon Warford. "Rigorous analytical applications of liquid secondary ion mass spectrometry/mass spectrometry." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/30026.
Full textDabney, David E. "Analysis of Synthetic Polymers by Mass Spectrometry and Tandem Mass Spectrometry." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1259021862.
Full textStaněk, Jan. "Kvantitativní analýza matricových prvků metodami SIMS a LEIS." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402575.
Full textGoodwin, Lee. "Capillary electrophoresis-mass spectrometry and tandem mass spectrometry studies of ionic agrochemicals." Thesis, University of York, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398906.
Full textShliaha, Pavel Vyacheslavovich. "Investigation of protein abundance and localization by mass spectrometry and ion-mobility spectrometry-mass spectrometry methods." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708661.
Full textYuen, Wei Hao. "Ion imaging mass spectrometry." Thesis, University of Oxford, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.564395.
Full textBerezovskaya, Yana. "Investigation of protein-ion interactions by mass spectrometry and ion mobility mass spectrometry." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/7747.
Full textLiu, Xiumin. "Mass Spectrometry and Tandem Mass Spectrometry Analysis of Polymers and Polymer-Protein Interactions." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1406838246.
Full textKaleta, Erin. "Applications of mass spectrometry to bacterial diagnostics: Affinity capture matrix assisted laser desorption/ionization mass spectrometry and polymerase chain reaction mass spectrometry." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/305352.
Full textSun, Xiaobo. "Forensic Applications of Gas Chromatography/Mass Spectrometry, High Performance Liquid Chromatography--Mass Spectrometry and Desorption Electrospray Ionization Mass Spectrometry with Chemometric Analysis." Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1329517616.
Full textWoods, Lucy Ann. "Characterising amyloid assembly using ion mobility spectrometry-mass spectrometry." Thesis, University of Leeds, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.590277.
Full textZhou, Yi. "Microfluidics interfacing to mass spectrometry." College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/7402.
Full textThesis research directed by: Mechanical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Testino, Samuel A. Jr. "Optimization strategies in mass spectrometry." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/26972.
Full textRostom, Adam A. "Mass spectrometry of protein interactions." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312385.
Full textWinter, David. "Drug analysis by mass spectrometry." Thesis, University of Canterbury. Chemistry, 1986. http://hdl.handle.net/10092/6560.
Full textPerkins, John Robert. "Supercritical fluid chromatography/mass spectrometry." Thesis, Cardiff University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375969.
Full textSmith, Derek John. "Femtosecond Laser Mass Spectrometry (FLMS)." Thesis, University of Glasgow, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264149.
Full textSweet, Steve M. M. "Phosphoprotein analysis by mass spectrometry." Thesis, University of Manchester, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538385.
Full textCobice, Diego Federico. "Mass spectrometry imaging of steroids." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/21032.
Full textSalter, Tara La Roche. "Metrology for ambient mass spectrometry." Thesis, University of Nottingham, 2015. http://eprints.nottingham.ac.uk/28748/.
Full textMcClure, Thomas Dale. "Biomedical applications of mass spectrometry." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185490.
Full textOffei, Felix. "Denoising Tandem Mass Spectrometry Data." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etd/3218.
Full textSPEZZANO, ROBERTO. "Lipids and Mass Spectrometry Application." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/647470.
Full textMohan, Krishnan R. "Fast atom bombardment mass spectrometry and tandem mass spectrometry : conditions for measurement of reproducible spectra." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/27159.
Full textCatron, Brittany Lyn. "Analysis of Protein:RNA Cross-links by Inductively Coupled Plasma Mass Spectrometry and Tandem Mass Spectrometry." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337885809.
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