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Dissertations / Theses on the topic 'Nuclei anisotropici'

Author: Grafiati

Published: 9 March 2023

Last updated: 31 July 2025

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1

DE, LUCA ALESSANDRA. "On some nonlocal issues: unique continuation from the boundary and capillarity problems for anisotropic kernels." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/378950.

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Lo scopo della presente tesi è quello di discutere i risultati ottenuti durante i miei studi di dottorato, principalmente rivolti a problemi non locali. Per prima cosa ci occupiamo di principi di continuazione unica forte ed espansioni asintotiche locali in determinati punti del bordo per soluzioni di due diverse classi di equazioni ellittiche. In particolare, partiamo con lo studio di una classe di equazioni ellittiche frazionarie in un dominio limitato sotto una condizione al contorno di Dirichlet omogenea esterna. Per fare ciò, sfruttiamo la procedura di estensione di Caffarelli-Silvestre,

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2

Macadangdang, Joan Karla. "Nuclear and Cytoskeletal Prestress Govern the Anisotropic Mechanical Properties of the Nucleus." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23310.

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Physical forces in the cellular microenvironment play an important role in governing cell function. Forces transmitted through the cell cause distinct deformation of the nucleus, and possibly play a role in force-mediated gene expression. The work presented in this thesis drew upon innovative strategies employing simultaneous atomic force and laser-scanning confocal microscopy, as well as parallel optical stretching experiments, to gain unique insights into the response of eukaryotic cell nuclei to external force. Non-destructive approaches confirmed the existence of a clear anisotropy in nucl

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3

Williams, Dennis Andrew. "A study of anisotropic particle emission from oriented nuclei." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363998.

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4

James, Christopher James. "AN ANISOTROPIC CONSTITUTIVE MODEL FOR NUCLEAR GRADE GRAPHITE." Cleveland State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=csu1544027689571583.

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5

Stourton, E. C. "Anisotropic interactions in solid-state nuclear magnetic resonance spectroscopy." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243269.

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6

Dahl, Jon Alan. "Positive anisotropic scattering sources for discrete ordinate methods." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/284105.

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The angular dependence of the differential scattering cross section is typically represented as a truncated Legendre series expansion. If the scattering cross section is highly anisotropic, these expansions may result in negative regions in the -1 ≤ μ0 ≤ +1 interval, thus representing the cross section by negative values. These negative regions may cause negative components in the discrete ordinates scattering source, which are non-physical and which may adversely affect the iterative convergence of the exponential discontinuous spatial discretization scheme. Two methods are presented which pr

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7

Krouppa, Brandon. "Quarkonium suppression using 3+1d anisotropic hydrodynamics." Kent State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=kent1532523360257784.

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8

Alqahtani, Mubarak Aydh K. "QUASIPARTICLE ANISOTROPIC HYDRODYNAMICS IN ULTRA-RELATIVISTIC HEAVY-ION COLLISIONS." Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1512385855986591.

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9

Alani, Mahdi Ahmed 1954. "Neutral particle Green's function in an infinite medium with anisotropic scattering." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/282874.

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The linear Boltzmann equation for the transport of neutral particles is investigated with the objective of generating benchmark-quality calculations for homogeneous infinite media. In all cases, the problems are stationary, of one energy group, and the scattering is both isotropic and anisotropic. In the transport problems considered, the Green's function is generally the quantity of interest. The solution is obtained through the use of the Fourier transform method. The numerical inversions use standard numerical techniques, such as Gauss-Legendre quadrature, summation of infinite series, and

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10

Xiao, Chengfeng. "A PROBABILISITIC BASED FAILURE MODEL FOR COMPONENTS FABRICATED FROM ANISOTROPIC GRAPHITE." Cleveland State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=csu1400156312.

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11

Abutaleb, Mohamed Osama. "RF instrumentation and system design for coherent control of anisotropic hyperfine-coupled electron/nuclear spin qubits." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/57778.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 81-85).<br>Coherent control is a fundamental challenge in quantum information processing (QIP). Our system of interest employs a local, isolated electron spin to coherently control nuclear spins. Coupled electron/nuclear spins are a promising candidate for QIP: nuclear spins are used for information storage and computation due to their long coherence times, while the electron is used as a spin actua

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12

Palmer, Robert K. "Asymptotic Derivation of the Simplified PN Equations for Nonclassical Transport with Anisotropic Scattering." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1594397838852992.

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13

Salvador, Marcelo. "Distribuição de barreiras de energia de nanopartículas magnéticas em campo externo." reponame:Repositório Institucional da UFSC, 2014. https://repositorio.ufsc.br/xmlui/handle/123456789/128600.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Física, Florianópolis, 2014.<br>Made available in DSpace on 2015-02-05T20:09:47Z (GMT). No. of bitstreams: 1 327324.pdf: 3541315 bytes, checksum: 6521363a229cc4e9ee23484c98698dde (MD5) Previous issue date: 2014<br>Neste trabalho estudamos o comportamento da magnetização de um sistema de nanopartículas magnéticas não interagentes, monodomínio, com anisotropia uniaxial. Foram realizadas simulações de Monte Carlo através do algoritmo de Metropolis para analisar

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14

Lohner, Daniel [Verfasser], and Klaus [Akademischer Betreuer] Reygers. "Anisotropic flow of direct photons in Pb-Pb collisions at 2.76 TeV per nucleon / Daniel Lohner ; Betreuer: Klaus Reygers." Heidelberg : Universitätsbibliothek Heidelberg, 2013. http://d-nb.info/1177382830/34.

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15

Walder, Brennan J. "Separating, correlating, and exploiting anisotropic lineshapes for NMR structure determination in solids." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429846088.

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16

Retinskaya, Ekaterina. "Reverse engineering of heavy-ion collisions : unraveling initial conditions from anisotropic flow data." Phd thesis, Université Paris Sud - Paris XI, 2014. http://tel.archives-ouvertes.fr/tel-01068777.

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Ultra-Relativistic heavy-ion physics is a promising field of high energy physics connecting two fields: nuclear physics and elementary particle physics. Experimental achievements of the last years have provided an opportunity to study the properties of a new state of matter created in heavy-ion collisions called quark-gluon plasma. The initial state of two colliding nuclei is affected by fluctuations coming from wave- functions of nucleons. These fluctuations lead to the momentum anisotropy of the hadronic matter which is observed by the detectors. The system created in the collision behaves l

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17

Batista, Mariana Raquel Bunoro. "Mobilidade da hélice 12 de receptores nucleares: comparação entre simulações de dinâmica molecular e experimentos de anisotropia de fluorescência." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-18042013-152451/.

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Receptores nucleares formam uma superfamília de proteínas responsáveis pela regulação da expressão de genes. Estruturalmente, são formados por três domínios: um domínio N-terminal bastante variável, um domínio altamente conservado de ligação com o DNA e um domínio C-terminal, menos conservado, denominado domínio de ligação com o ligante (LDB). Diversos experimentos mostram que a interação com o ligante afeta a estrutura e a mobilidade da hélice C-terminal dos receptores nucleares (hélice 12 do domínio de ligação com o ligante), sendo o principal mecanismo de ativação e repressão da transcrição

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18

Abdi, Hadj. "Mechanical and Hydromechanical Behavior of Host Sedimentary Rocks for Deep Geological Repository for Nuclear Wastes." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30924.

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Sedimentary rocks are characterized with very low permeability (in the order of 10-22 m2), low diffusivity, a possible self-healing of fractures, and a good capacity to retard radionuclide transport. In recent years, sedimentary rocks are investigated by many research groups for their suitability for the disposal of radioactive waste. Development of deep geologic repositories (DGRs) for the storage of radioactive waste within these formations causes progressive modification to the state of stress, to the groundwater regime, and to the chemistry of the rock mass. Thermal effects due to the ongo

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19

Marcó, García Núria. "Development of resolution-enhanced NMR techniques for improved small-molecules structural analysis." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/643305.

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La presente tesis doctoral se centra en el estudio de técnicas de mejora de resolución de la espectroscopía por Resonancia Magnética Nuclear (RMN) para una más simple y precisa elucidación estructural de moléculas pequeñas. El trabajo se ha presentado como un compendio de siete publicaciones escritas para diversas prestigiosas revistas científicas. Las publicaciones desarrollan en profundidad la aplicación de las mejoras de resolución para i) una medida precisa y eficiente de las constantes de acoplamiento tanto homo- como heteronucleares e ii) la optimización de las medidas de parámetros anis

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20

Vaissiere, Anaïs. "Etude de l’interaction de protéines nucléaire : RevErb alpha / NCor par des techniques de fluorescence (Anisotropie et Microscopie)." Thesis, Montpellier 1, 2014. http://www.theses.fr/2014MON13510/document.

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Les récepteurs nucléaires sont membres d'une famille de protéines activées par des ligands et qui régulent la transcription de nombreux gènes. Le récepteur nucléaire RevErbα est constitutivement inhibiteur de la transcription de gènes cibles via le recrutement du complexe corépresseur NCor-HDAC3 (Nuclear CoRepressor et Histone DeAcetylase 3). Ce complexe joue un rôle important dans le contrôle de l'horloge circadienne et de la glucogenèse via la régulation de la transcription des gènes codant pour les enzymes G6Pase (Glucose-6-Phosphatase) et PEPCK (PhosphoEnol Pyruvate Carboxy Kinase). Ces de

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21

Silva, Maria das Gra?as Dias da. "Efeitos da intera??o dipolar na nuclea??o de v?rtices em nano-cilindros ferromagn?ticos." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/16635.

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Made available in DSpace on 2014-12-17T15:15:01Z (GMT). No. of bitstreams: 1 MariaGDS_TESE.pdf: 10253325 bytes, checksum: a11a4b9893c49f999607f55737b5aded (MD5) Previous issue date: 2014-07-28<br>Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico<br>The effect of confinement on the magnetic structure of vortices of dipolar coupled ferromagnetic nanoelements is an issue of current interest, not only for academic reasons, but also for the potential impact in a number of promising applications. Most applications, such as nano-oscillators for wireless data transmission, benefit f

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22

Kantola, A. M. (Anu M. ). "Liquid crystal NMR: director dynamics and small solute molecules." Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514260704.

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Abstract The subjects of this thesis are the dynamics of liquid crystals in external electric and magnetic fields as well as the magnetic properties of small molecules, both studied by liquid crystal nuclear magnetic resonance (LC NMR) spectroscopy. Director dynamics of a liquid crystal 5CB in external magnetic and electric fields was studied by deuterium NMR and spectral simulations. A new theory was developed to explain the peculiar oscillations observed in the experimental spectra collected during fast director rotation. A spectral simulation program based on this new theory was developed a

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23

Wu, Yang. "Azimuthal anisotropy in gold-gold collisions at 4.5 GeV center-of-mass energy per nucleon pair using fixed-target mode at the Relativistic Heavy-Ion Collider." Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent1562355001935965.

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24

Faure, Bastien. "Development of neutronic calculation schemes for heterogeneous sodium-cooled nuclear cores in the Apollo3 code : application to the ASTRID prototype." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0289.

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Les réacteurs nucléaires refroidis au sodium offrent des perspectives intéressantes pour la filière nucléaire (utilisation optimale de l'uranium naturel, réduction de la radiotoxicité des déchets nucléaires). Cependant, la nécessité d’élever le niveau de sûreté de ces réacteurs aux standards du XXIe siècle a conduit à des designs de cœurs très hétérogènes.Ainsi, les objectifs de la thèse sont l’identification des principaux phénomènes physiques devant être pris en compte lors du calcul neutronique de cœurs hétérogènes en spectre rapide, ainsi que le développement de schémas de calcul adaptés d

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25

Shen, Chun. "The standard model for relativistic heavy-ion collisions and electromagnetic tomography." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1405931790.

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26

De, Vet Christiaan J. F. "Auto-assemblage d'un anthacène fluorescent aux échelles nano- et micrométriques par photoréaction contrôlée." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0333/document.

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Le contrôle spatial et temporel de l'auto-assemblage de molécules fluorescentes en nano-objets organisés et en matériaux mous a été réalisé par photochimie.La photodécarbonylation quantitative du progélifiant dkDDOA sous irradiation génère le super gélifiant 2,3-didécyloxyanthracène (DDOA) à température ambiante et simultanément gélifie le DMSO. DkDDOA est réactif sous excitation avec de la lumière bleue en raison de la fonction alpha-dicétone sensible à la lumière qui est ajoutée au noyau aromatique. De plus,l’ajustement de la couleur de l'émission du gel du bleu au vert a été obtenu en ajout

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27

Seleznyova, Kira. "Magnetic properties and magnetic resonances of single crystals based on iron borate : Experimental studies and modelling." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0398/document.

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La thèse porte sur la synthèse et l'étude des propriétés magnétiques de borates de fer-gallium,FexGa1-xBO3 avec 0 supérieur ou égal à x supérieur ou égal à 1. Ces matériaux sont prometteurs pour les applications; en plus, grâce à la présence, en fonction de x, de différents types d’ordre magnétique, ils sont bien adaptés au traitement de nombreux problèmes du magnétisme des solides.Le borate de fer, FeBO3 est un antiferromagnétique possédant un plan de facile aimantation et un faible ferromagnétisme. Les caractéristiques du borate de fer sont radicalement modifiées par substitution isomorphe f

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28

El, Haj Kacem Maher. "Visco-plasticité de transformation de phase diffusive : modélisation numérique et caractérisation des effets de la viscosité." Thesis, Rouen, INSA, 2016. http://www.theses.fr/2016ISAM0007.

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Dans cette étude, nous analysons les conséquences mécaniques des transformations de phase diffusives, particulièrement la plasticité de transformation ou TRIP (TRansformation Induced Plasticity) ainsi que le comportement élasto-viscoplastique. Cette plasticité de transformation, explicable par le mécanisme de Greenwood-Johnson, est souvent décrite avec le modèle de Leblond qui fait l'hypothèse d'un comportement élastoplastique. Dans ce modèle comme dans la majorité des analyses expérimentales et des modélisations (analytiques, par éléments finis, FFT ou encore champ de phase), une des hypothès

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29

Mechehoud, Fayçal. "Croissance par voie électrochimique et propriétés magnétiques et topographique de couches minces de Co sur Si(111)." Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH7833/document.

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Nous avons réalisé des couches minces de Co sur un substrat semi-conducteur (Si(111)) par voix électrochimique, en mode potentiostatique et en mode galvanostatique, et étudié leurs propriétés topographiques (AFM, MEB) et magnétique (RMN, effet Kerr, SQUID), afin de relier ces propriétés aux modes de croissance et aux conditions de dépôt à priori identiques conduisent à des morphologies et donc des propriétés magnétiques très différentes. Nous avons développé une approche rigoureuse avec un contrôle systématique de la qualité du substrat de départ pour clarifier les modes de nucléation et de cr

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30

Lima, Leonardo Henrique França de. "Estudos por modelagem e dinâmica molecular integradas a técnicas físicas para biomoléculas em solução - interação de receptores nucleares a elementos responsivos no DNA e dinâmica inter-domínios da celobiohidrolase I." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-06122011-084130/.

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Movimentos coletivos prestam um papel fundamental na dinâmica e energética de biomoléculas em solução. Estes movimentos permitem o acoplamento de regiões significativamente distantes, apresentando considerável influência, por exemplo, no alosterismo para a formação de complexos macromoleculares e no funcionamento integrado de proteínas multidomínios como \"máquinas moleculares\". Neste trabalho de doutoramento, serão apresentados os resultados referentes à aplicação conjunta de técnicas experimentais biofísicas, de modelagem estrutural e de dinâmica molecular no estudo de dois sistemas para os

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31

Kunkel, Henry Peter. "Nuclear magnetic resonance in the highly anisotropic rare earth-Co5 compounds." 1985. http://hdl.handle.net/1993/28838.

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32

Pei-YaoLin and 林佩瑤. "Anisotropic thermal analysis of the high-level nuclear waste in final geological repositories." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/77dp8q.

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碩士<br>國立成功大學<br>資源工程學系<br>104<br>After numerous years of international research and development, there is a broad technical consensus that deep geological disposal which offers relatively enough space to accommodate the large volume of HLW accumulated over the years will provide for the safety of humankind and the environment now and far into the future. In addition, there is not yet an operating geological repository for high-level radioactive waste, and there remains substantial public research about the underground rock mass of geological repository. However, most studies all consider the h

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33

Jayanthi, S. "Probing Anisotropic Interactions In Solid State NMR : Techniques And Applications." Thesis, 2010. http://etd.iisc.ac.in/handle/2005/1256.

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The thesis aims at methodological developments in Nuclear Magnetic Resonance (NMR) and study of oriented samples like liquid crystals and single crystals and powder samples. Though methodological development in solid state NMR (ss-NMR) has gone far ahead, this work attempts to contribute some novel methods in this direction. The work presented here falls into two categories (i) methodological developments for obtaining information on anisotropic interactions and (ii) experiments which utilize the existing methodologies to study systems of interest under static condition and also under sample s

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34

Jayanthi, S. "Probing Anisotropic Interactions In Solid State NMR : Techniques And Applications." Thesis, 2010. http://hdl.handle.net/2005/1256.

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The thesis aims at methodological developments in Nuclear Magnetic Resonance (NMR) and study of oriented samples like liquid crystals and single crystals and powder samples. Though methodological development in solid state NMR (ss-NMR) has gone far ahead, this work attempts to contribute some novel methods in this direction. The work presented here falls into two categories (i) methodological developments for obtaining information on anisotropic interactions and (ii) experiments which utilize the existing methodologies to study systems of interest under static condition and also under sample s

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35

Brittingham, John Macdougall. "The Effect of Bonner Sphere Borehole Orientation on Neutron Detector Response." 2010. http://trace.tennessee.edu/utk_gradthes/775.

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This thesis investigates the differences in Bonner Sphere detector response for anisotropic neutron fields as a function of borehole orientation. Monte Carlo simulations using MCNPX were used to calculate the difference for a borehole oriented directly behind a unidirectional neutron field and one in which the borehole is normal to the neutron flux. The differences in detector response depend on the size of the Bonner Sphere and the energy of the incident flux, which could introduce significant error in the determination of the neutron field’s energy spectrum.

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