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Dissertations / Theses on the topic 'Running of coupling constants'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Tekin, Fatih. "The strong coupling constant of QCD with four flavors." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2010. http://dx.doi.org/10.18452/16247.

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In dieser Arbeit studieren wir durch numerische Simulationen die Theorie der starken Wechselwirkung Quantenchromodynamik auf einem Raumzeit-Gitter (Gitter-QCD) mit vier dynamischen Quark-Flavors. In den Anfaengen der Gitter QCD wurden die Effekte der Quark-Polarisation aufgrund von technischer Begrenzung der Rechenkapazitaet vernachlaessigt und die sogennante "quenched Approximation" angewendet. Der Grund fuer die "quenched" Approximation war, dass der numerische Aufwand um die Fermion-Determinante auszuwerten die damaligen technischen Moeglichkeiten ueberstieg. In der Tat ist dies immer noch

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2

Astorga-Saenz, Francisco Antonio. "Coupling constants and unification." Thesis, Durham University, 1994. http://etheses.dur.ac.uk/5668/.

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The first part of this work gives a general background for the ideas involved in the research presented in this thesis. Coupling constants, Renor-malisation Group Equation, Grand Unified Theories (GUTs) and Super symmetry (SUSY) are briefly introduced. Following this, we analyse the unification parameters M(_GUT) and l/α(_GUT) as functions of the number of fermion families (F) and Higgs boson multiplets (S). Analytical and numerical solutions to the leading and next-to-leading order evolution equation for the couplings a, are obtained. This is done in the context of the Standard Model embedded

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3

Wallace, D. S. "Electron-lattice coupling in conjugated polymers." Thesis, University of Oxford, 1989. http://ora.ox.ac.uk/objects/uuid:49bef560-dfdc-43b2-b4e2-fdf6e4ee763d.

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The results obtained by this new method are shown to be able to account for most of the shortcomings of the earlier methods, in particular their failure satisfactorily to explain the quenching of luminescence in cis-polyacetylene and their poor predictions of the relative strengths of the two photoinduced absorption peaks in polythiophene. The ability of trans-polyacetylene (t-PA) to support a novel type of dynamic defect known as a breather is also verified. A quantitative estimate is made of the mobility of the fundamental defect in t-PA, known as a soliton, and this is in good agreement wit

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4

Ho, Andy C. T. "Imaginary charge quantum electrodynamics : a running coupling analysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0005/NQ34551.pdf.

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5

Ionides, John Michael Constantine. "Methods for measuring long-range heteronuclear coupling constants in macromolecules." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624647.

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6

Hillenbach, Mark. "Local gauge coupling running in supersymmetric gauge theories on orbifolds." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=984665277.

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7

Sutton, Peter Gordon. "Confirmational analysis of molecules by NMR spectroscopy using vicinal '1'3C-'1'3C coupling constants." Thesis, University of Sussex, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318515.

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8

Sharkey, Kieran James. "An investigation of the running coupling and meson masses in lattice QCD." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343926.

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9

Jia, Hsi-Wei. "Selective excitation in high-resolution NMR for determination of coupling constants and internuclear distances." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627313.

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10

Lee, Steven Robert. "A new experiment to determine the weak coupling constants ratio : Gâ†A/Gâ†V." Thesis, University of Sussex, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336060.

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11

Saurí, i. Jiménez Josep. "Modern NMR methodologies for the measurement of homo- and heteronuclear coupling constants in small molecules." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/284051.

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La present tesis doctoral està basada en el desenvolupament de noves metodologies de RMN per la mesura de constants d’acoblament homo- i heteronuclears en molècules petites. La tesi es presenta com a compendi de publicacions d’articles de recerca que han estat publicats en diferents revistes científiques. El punt de partida està basat en l’experiència i coneixement previ del nostre grup de recerca en aquest camp. S’ha pres com a referència principal l’experiment selHSQMBC, al qual s’hi han implementat noves funcions per tal de dissenyar un conjunt de noves metodologies capaces de resoldre els

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12

Pons, Vincent. "From dihydrogen complexes to polyhydrides /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/11571.

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13

Chen, Yakun. "First-principles studies of transition metal doped systems and hyperﬁne coupling constants of muoniated butyl radicals". Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/21985.

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The ﬁrst part of the thesis examines, using density functional theory (DFT) calculations, the effects of introducing transition metals (TMs) into different systems, including small Au clusters; carbon nanotubes (CNTs); pristine and defected boron nitride nanotubes (BNNTs). The results show that the frontier molecular orbitals of the TM modiﬁed systems are usually localized around the doping site and the reactivities of these systems are often improved. In the case of small TM clusters, both PtAum and Aun tend to be planar in their ground state. N₂ and O₂ adsorption onto these clusters results

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14

Wigglesworth, Richard D. "The calculation of nuclear shielding and spin-spin coupling constants in the water and acetylene molecules." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301581.

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15

Anderson, Kevin David. "Borel singularities in the high energy limit of QCD." Thesis, University of Southampton, 1998. https://eprints.soton.ac.uk/393576/.

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16

Dierks, Tracy Allan. "Kinematics and joint coupling in runners with patellofemoral pain during a prolonged run." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 8.83 Mb., 176 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3200532.

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17

Liu, Tao. "Novel methods for determining the optical constants of anisotropic polymer films -- new application of prism wave-guide coupling." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/8602.

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18

Di, Pierro Massimo. "B physics from lattice simulations." Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297379.

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19

de, Oliveira Fredi André Roberto. "New applications of covariance NMR and experimental development for measurements of homonuclear coupling constants in overlapping signals." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/565884.

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Los resultados experimentales obtenidos en esta tesis están presentados en la forma de 3 artículos científicos publicados en revistas científicas especializadas na área de Resonancia Magnética Nuclear (RMN). Dos artículos con el uso de Covariancia de RMN como un general método para obtener espectros de pRMN. El último trabajo describe un nuevo experimento llamado de selTOCSY G-SERF para medir JHH en señales solapadas. Publicación 1 describe un método general para generar espectros de psRMN por Covariancia de RMN. Este nuevo enfoque es único en la espectroscopia de RMN; dando una manera barat

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20

Scott, Gisela Helen Enid. "NMR studies of a protein folding intermediate and a method to determine long-term heteronuclear coupling constants." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308333.

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21

Hausberg, Sascha [Verfasser], and Peter [Akademischer Betreuer] Comba. "Prediction of Exchange Coupling Constants with Density Functional Theory and Molecular Mechanics / Sascha Hausberg ; Betreuer: Peter Comba." Heidelberg : Universitätsbibliothek Heidelberg, 2011. http://d-nb.info/1179228928/34.

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22

Ramakadi, Tselane Geneva. "Buchwald coupling of quinoxaline-o-sulfonates leading to the heterocyclic compounds with potential medicinal properties against TB." Thesis, University of Limpopo, 2018. http://hdl.handle.net/10386/2341.

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Thesis (M. Sc. (Chemistry)) --University of Limpopo, 2018<br>The dissertation describes the use of 2-benzenesulfonyloxyquinoxaline as a good coupling partner for different amine substrates. The palladium-mediated cross- coupling of aryl electrophiles and amines has become a widely used method of constructing arylamine frameworks. The formation of carbon-nitrogen bonds was accomplished via palladium-catalysed Buchwald-Hartwig amination employing different amine substrates to yield substituted quinoxaline-2-amines compounds in good to moderate yields. Buchwald ligands (Xphos, tButylxphos and Bre

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23

Fischer, Christian S. "Non-perturbative propagators, running coupling and dynamical mass generation in ghost-antighost symmetric gauges in QCD." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=967191424.

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24

Titman, Jeremy Joseph. "Restriction of magnetization transfer and methods for the measurement of scalar coupling constants in two dimensional NMR spectroscopy." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358849.

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25

Vilcachagua, Janaina Dantas. "Interações de orbitais e seus efeitos nos acoplamentos 'J SOB.2. J IND H' e 'J SOB.1 J IND CH' em 1, 3, 5-trioxano, 1, 3, 5-tritianos monosubstituidos : um estudo teorico e experimental." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249194.

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Orientador: Roberto Rittner Neto<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-08T22:55:18Z (GMT). No. of bitstreams: 1 Vilcachagua_JanainaDantas_M.pdf: 7602676 bytes, checksum: c8ad06bb13f22f25be4a54757dfeb0e2 (MD5) Previous issue date: 2007<br>Resumo: Estudaram-se as interações de orbitais e seus efeitos nas constantes de acoplamento JHH e JCH em 1,3,5-trioxano, 1,3,5-tritiano e 1,3,5-tritianos monosubstituídos, onde os substituintes foram os halogênios: flúor, cloro, bromo e metil por dados de ressonância magné

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26

Pawson, Trevor G. "Harmonic vibrational effects on isotropic hyperfine coupling constants molecular hydrogen in interstellar ice and atomic relaxation in doped silicon." Thesis, University of Leicester, 1998. http://hdl.handle.net/2381/30015.

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Three separate topics are presented covering the temperature dependence of isotropic hyperfine coupling constants, an anharmonic analysis of molecular hydrogen in interstellar ice and the microscopic structure of doped crystalline silicon lattices. The temperature dependence and vibrational effects of isotropic hyperfine coupling constants are studied using the ab-initio density functional methods BLYP and B3LYP with the common double and triple zeta basis sets 6-31G(d,p) and 6-311(d,p). Harmonic oscillator wavefunction averages for all normal modes of a molecule are accounted for and the temp

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27

Sanderson, Jennifer. "Aspects of hybrid inflation in supersymmetry." Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299517.

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28

Guevara, Prieto Ivonne Alexandra. "Quantum State Smoothing." Thesis, Griffith University, 2016. http://hdl.handle.net/10072/367795.

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Smoothing is an estimation method whereby a classical state (probability distribution for classical variables) at a given time is conditioned on all-time (both past and future) observations. This method has been well developed in classical systems, but its application to quantum systems has only recently begun to be explored. Previous works have used the term "quantum smoothing" to mean estimating classical parameters, (Phys. Rev. Lett., 102, 250403, (2009)), which is essentially classical smoothing in which the noisy observation of the classical parameters is mediated by a quantum system. In

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29

Richardson, Julia Margaret. "The measurement of coupling constants and the use of heteronuclear cross-polarisation in NMR experiments for the study of proteins." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.281970.

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30

Ganiouchine, Dmitri I. "ParaGauss - a parallel implementation of the density functional method EPR g-tensors and hyperfine coupling constants in the Douglas-Kroll-Hess approach /." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972240489.

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31

Alves, Ricardo Joao Gaio. "A convergent reformulation of perturbative QCD." Thesis, Durham University, 2000. http://etheses.dur.ac.uk/4259/.

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We present and explore a new formulation of perturbative QCD based not on the renormalised coupling but on the dimensional transmutation parameter of the theory and the property of asymptotic scaling. The approach yields a continued function, the iterated function being that involved in the solution of the two-loop β-function equation. In the so-called large-b limit the continued function reduces to a continued fraction and the successive approximants are diagonal Padé approximants. We investigate numerically the convergence of successive approximants using the leading-b approximation, motivat

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32

Brown, Allison M. "The Effects of Fatigue on Pathomechanics and Electromyography in Female Runners with Iliotibial Band Syndrome." Diss., Temple University Libraries, 2011. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/123697.

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Physical Therapy<br>Ph.D.<br>The etiology of iliotibial band syndrome (ITBS) is not fully understood, however, dysfunction at the hip and decreased resistance to fatigue have been suggested to contribute to development of the syndrome. The objective of this study was to investigate differences in hip abductor strength and fatigue resistance, hip muscle activation timing and hip joint kinematic, kinetic and joint coupling patterns in female runners with and without ITBS. In addition, this study examined the effects of a run to exertion on these variables. Twelve female runners with ITBS and 20

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33

Niwas, Ram [Verfasser], Max [Gutachter] Holthausen, and Andreas [Gutachter] Terfort. "Quantum chemical prediction of 19F NMR shifts for perfluorinated arenes and magnetic exchange coupling constants for diradicals / Ram Niwas ; Gutachter: Max Holthausen, Andreas Terfort." Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg, 2018. http://d-nb.info/1154485773/34.

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34

Beerwerth, Randolf [Verfasser], Stephan [Gutachter] Fritzsche, J. Gutachter] Bieron, and Tomas [Gutachter] [Brage. "Electron correlation in relativistic multiconfiguration calculations of isotope shift parameters, hyperfine coupling constants and atomic processes / Randolf Beerwerth ; Gutachter: Stephan Fritzsche, J. Bieron, Tomas Brage." Jena : Friedrich-Schiller-Universität Jena, 2019. http://d-nb.info/1206542586/34.

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35

Ablikim, Medina. "Boundary sinh-Gordon model and its supersymmetric extension." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4853/.

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Three different aspects of the sinh-Gordon model are explored in this thesis. We begin, in chapter one, with a summary of the model and the necessary background. Chapter two studies the model with two boundary conditions. Two approaches are presented to investigate the reflection factors off the boundaries and the energy of the theory. In chapter three, perturbation theory is developed to study the theory with one general boundary condition. A contribution to the quantum reflection factor is obtained and compared with the result obtained for the special boundary condition. Chapters four and fi

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36

Martins, Carina Rabelo. "Analise conformacional por ressonância magnética nuclear e cálculos teóricos em anéis de cinco membros : 2-Halociclopentanonas." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249191.

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Orientador: Roberto Rittner Neto<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-04T16:43:04Z (GMT). No. of bitstreams: 1 Martins_CarinaRabelo_M.pdf: 2440804 bytes, checksum: 5902fcc19589dcc81792e0806f7ae9f6 (MD5) Previous issue date: 2005<br>Resumo: Este trabalho apresenta estudos sobre o isomerismo conformacional das 2-halociclopentanonas (halo= cloro e bromo) utilizando a constante de acoplamento JHH, cálculos teóricos e a teoria de solvatação. Foi realizada a otimização das geometrias e das energias dos confôrmero

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37

Fairbairn, Malcolm. "Cosmological and theoretical aspects of higher dimensions." Thesis, University of Sussex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367330.

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38

Griffiths, Scott. "Reggeons in pQCD." Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297421.

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39

Silva, Caio Ricardo Faiad da 1987. "Estudo experimental de teórico das constantes de acoplamento n ANTPOT. ('J IND. ch') (n= 1,2,3) em adamantanos substituídos." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249182.

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Orientador: Roberto Rittner Neto<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-20T02:42:28Z (GMT). No. of bitstreams: 1 Silva_CaioRicardoFaiadda_M.pdf: 3324014 bytes, checksum: 2a09da96b3179c4cc07eb8d6923bcdd1 (MD5) Previous issue date: 2011<br>Resumo: A introdução da dissertação consiste na breve descrição da racionalização de acoplamentos JCH (n = 1, 2 e 3), das etapas de cálculos teóricos e das duas técnicas recentemente implementadas no IQ-Unicamp: HSQC-TOCSY-IPAP e IPAP-HSQMBC. A primeira parte da seção Result

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40

Cullen, M. A. "Perturbative predictions for 4 jet production at LEP and prompt photon emission at the tevatron." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4504/.

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Many contemporary experimental QCD results achieve greater accuracy in measurement than equivalent theoretical predictions calculated at leading order. Therefore it is necessary to consider next to leading order (NLO) predictions for many processes in order to compare experiment with theory. Accurate theoretical predictions are also important in order to reduce the uncertainty in QCD parameters such as the coupling constant a, and to test whether QCD is in fact the correct theory to describe the strong interaction. With NLO results it is also possible to separate different clustering algorithm

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41

Floratos, Ioannis. "Multi-Skyrmion solutions of a sixth order Skyrme model." Thesis, Durham University, 2001. http://etheses.dur.ac.uk/3988/.

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In this Thesis, we study some of the classical properties of an extension of the Skyrme model defined by adding a sixth order derivative term to the Lagrangian. In chapter 1, we review the physical as well as the mathematical motivation behind the study of the Skyrme model and in chapter 2, we give a brief summary of various extended Skyrme models that have been proposed over the last few years. We then define a new sixth order Skyrme model by introducing a dimensionless parameter λ that denotes the mixing between the two higher order terms, the Skyrme term and the sixth order term. In chapter

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42

Xiang, Shengqi [Verfasser], Markus [Akademischer Betreuer] Zweckstetter, Reinhard [Akademischer Betreuer] Lührmann, et al. "Structural insights into Arginine-Serine rich proteins and N-H spin-spin coupling constants / Shengqi Xiang. Gutachter: Reinhard Lührmann ; Ralf Ficner ; Bert de Groot ; Adam Lange ; Lars Thorsten Kuhn. Betreuer: Markus Zweckstetter." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2013. http://d-nb.info/1044871229/34.

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43

Martins, Carina Rabelo. "Estudos conformacional de ésteres metílicos de alguns aminoácidos através das espectroscopias no infravermelho, de RMN e cálculos teóricos." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249204.

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Orientador: Roberto Rittner Neto<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-16T12:43:04Z (GMT). No. of bitstreams: 1 Martins_CarinaRabelo_D.pdf: 1755898 bytes, checksum: c7a1d0009ba787233a8957afb35ccedb (MD5) Previous issue date: 2009<br>Resumo: Este trabalho apresenta estudos teóricos e experimentais sobre estabilidade conformacional de ésteres metílicos de alguns aminoácidos (glicina, alanina, prolina e ácido aspártico) por meio de espectroscopia vibracional e cálculos teóricos da estrutura eletrônica. Os cálculos te

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44

Waters, David. "A first estimate of #sigma#(e'+p #-># e'+W#+-#X) and studies of high â†pâ†T leptons with ZEUS detector at HERA." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299839.

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45

McCance, Gavin John. "Event shapes and power corrections at HERA." Thesis, University of Glasgow, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342040.

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46

Remmert, Sarah M. "Reduced dimensionality quantum dynamics of chemical reactions." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:7f96405f-105c-4ca3-9b8a-06f77d84606a.

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In this thesis a reduced dimensionality quantum scattering model is applied to the study of polyatomic reactions of type X + CH4 <--> XH + CH3. Two dimensional quantum scattering of the symmetric hydrogen exchange reaction CH3+CH4 <--> CH4+CH3 is performed on an 18-parameter double-Morse analytical function derived from ab initio calculations at the CCSD(T)/cc-pVTZ//MP2/cc-pVTZ level of theory. Spectator mode motion is approximately treated via inclusion of curvilinear or rectilinear projected zero-point energies in the potential surface. The close-coupled equations are solved using R-matrix p

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47

Eklund, Robert. "Computational Analysis of Carbohydrates : Dynamical Properties and Interactions." Doctoral thesis, Stockholm : Department of Organic Chemistry, Stockholm University, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-538.

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48

Riad, Stella. "Studies of effective theories beyond the Standard Model." Licentiate thesis, KTH, Teoretisk partikelfysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-154048.

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The vast majority of all experimental results in particle physics can be described by the Standard Model (SM) of particle physics. However, neither the existence of neutrino masses nor the mixing in the leptonic sector, which have been observed, can be described within this model. In fact, the model only describes a fraction of the known energy in the Universe. Thus, we know there must exist a theory beyond the SM. There is a plethora of possible candidates for such a model, such as supersymmetry, extra dimensional theories, and string theory. So far, there are no evidence in favor of these mo

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49

Parzefall, Ulrich. "A measurement of trilinear gauge couplings using the DELPHI detector." Thesis, University of Liverpool, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366942.

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50

Earlywine, Arthur Dale. "The stereochemistry and mechanism of the iron pentacarbonyl-promoted coupling of strained olefins to carbon monoxide : a NMR-facilitated study of the equilibrium constants between and collision complex of a 10,11-diphenyl-1,4:5,8-dimethano-1,4,4a,4b,5,8,8a, 8b-octahydrofluorene-9-one stereoisomer and the lanthanide shift reagent Eu(fod), the electrophilic aromatic thallation of some selected biomolecules, and the synthesis and high resolution NMR study of the two series of 1,4,4a,8a-tetrahydro-endo-1,4-methanonaphthalene-5 ,8-diones and pentacyclo[5.4.0.0,.0." Full-text version available from OU Domain via ProQuest Digital Dissertations, 1985.

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