Tesis sobre el tema "Structures interaction"
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Plessas, Spyridon D. "Fluid-structure interaction in composite structures". Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/41432.
Texto completoIn this research, dynamic characteristics of polymer composite beam and plate structures were studied when the structures were in contact with water. The effect of fluid-structure interaction (FSI) on natural frequencies, mode shapes, and dynamic responses was examined for polymer composite structures using multiphysics-based computational techniques. Composite structures were modeled using the finite element method. The fluid was modeled as an acoustic medium using the cellular automata technique. Both techniques were coupled so that both fluid and structure could interact bi-directionally. In order to make the coupling easier, the beam and plate finite elements have only displacement degrees of freedom but no rotational degrees of freedom. The fast Fourier transform (FFT) technique was applied to the transient responses of the composite structures with and without FSI, respectively, so that the effect of FSI can be examined by comparing the two results. The study showed that the effect of FSI is significant on dynamic properties of polymer composite structures. Some previous experimental observations were confirmed using the results from the computer simulations, which also enhanced understanding the effect of FSI on dynamic responses of composite structures.
Violette, Michael A. "Fluid structure interaction effect on sandwich composite structures". Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5533.
Texto completoThe objective of this research is to examine the fluid structure interaction (FSI) effect on composite sandwich structures under a low velocity impact. The primary sandwich composite used in this study was a 6.35-mm balsa core and a multi-ply symmetrical plain weave 6 oz E-glass skin. The specific geometry of the composite was a 305 by 305 mm square with clamped boundary conditions. Using a uniquely designed vertical drop-weight testing machine, there were three fluid conditions in which these experiments focused. The first of these conditions was completely dry (or air) surrounded testing. The second condition was completely water submerged. The final condition was a wet top/air-backed surrounded test. The tests were conducted progressively from a low to high drop height to best conclude the onset and spread of damage to the sandwich composite when impacted with the test machine. The measured output of these tests was force levels and multi-axis strain performance. The collection and analysis of this data will help to increase the understanding of the study of sandwich composites, particularly in a marine environment.
Edwards, Guy J. "Structures of stance in interaction". Connect to thesis, 2009. http://repository.unimelb.edu.au/10187/6671.
Texto completoThiriat, Paul. "FLUID-STRUCTURE INTERACTION : EFFECTS OF SLOSHING IN LIQUID-CONTAINING STRUCTURES". Thesis, KTH, Bro- och stålbyggnad, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-125353.
Texto completoMaheri, M. R. "Hydrodynamic investigations of cylindrical structures and other fluid-structure systems". Thesis, University of Bristol, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376615.
Texto completoChelghoum, Abdelkrim. "Dynamics of structures including fluid interaction". Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/37966.
Texto completoBotterill, Neil. "Fluid structure interaction modelling of cables used in civil engineering structures". Thesis, University of Nottingham, 2010. http://eprints.nottingham.ac.uk/11657/.
Texto completoKara, Mustafa Can. "Fluid-structure interaction (FSI) of flow past elastically supported rigid structures". Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/51931.
Texto completoKhalili, Tehrani Payman. "Analysis and modeling of soil-structure interaction in bridge support structures". Diss., Restricted to subscribing institutions, 2009. http://proquest.umi.com/pqdweb?did=1925776151&sid=5&Fmt=2&clientId=1564&RQT=309&VName=PQD.
Texto completoValdés, Vázquez Jesús Gerardo. "Nonlinear Analysis of Orthotropic Membrane and Shell Structures Including Fluid-Structure Interaction". Doctoral thesis, Universitat Politècnica de Catalunya, 2007. http://hdl.handle.net/10803/6866.
Texto completoLa parte de fluidos de este trabajo está gobernada por las ecuaciones de Navier-
Stokes para flujos incompresibles, las cuales son modeladas por interpolaciones estabilizadas de elementos finitos. Ya que la solución monolítica de dichas ecuaciones tiene la desventaja que consumen mucho tiempo en la solución de grandes sistemas de ecuaciones, el método de pasos fraccionados se usa para aprovechar las ventajas computacionales que brinda gracias al desacoplamiento de la presión del campo de las velocidades. Además, el esquema α-generalizado para integración en el tiempo para fluidos es adaptado para que se use con la t´ecnica de los pasos fraccionados.
El problema de interacción fluido-estructura es formulado como un sistema de tres campos: la estructura, el fluido y el movimiento de la malla. El movimiento del dominio del fluido es tomado en cuenta mediante la formulación arbitraria Lagrangiana-Euleriana, para la cual se usan dos estrategias de movimiento de malla.
Para el acoplamiento entre el fluido y la estructura se usa un acoplamiento fuerte por bloques usando la técnica de Gauss-Seidel. Debido a que la interacción entre el fluido y la estructura es altamente no-lineal, se implementa el método de relajación basado en la técnica de Aitken, la cual acelera la convergencia del problema.
Finalmente varios problemas se presentan en los diferentes campos, los cuales verifican la eficiencia de los algoritmos implementados.
Nowadays, fluid-structure interaction problems are a great challenge of different fields in engineering and applied sciences. In civil engineering applications, wind flow and structural motion may lead to aeroelastic instabilities on constructions such as long-span bridges, high-rise buildings and light-weight roof structures. On the other hand, biomechanical applications are interested in the study of hemodynamics, i.e. blood flow through large arteries, where large structural membrane deformations interact with incompressible fluids.
In the structural part of this work, a new methodology for the analysis of geometrically nonlinear orthotropic membrane and rotation-free shell elements is developed based on the principal fiber orientation of the material. A direct consequence of the fiber orientation strategy is the possibility to analyze initially out-ofplane prestressed membrane and shell structures. Additionally, since conventional membrane theory allows compression stresses, a wrinkling algorithm based on modifying the constitutive equation is presented. The structure is modeled with finite elements emerging from the governing equations of elastodynamics.
The fluid portion of this work is governed by the incompressible Navier-Stokes equations, which are modeled by stabilized equal-order interpolation finite elements.
Since the monolithic solution for these equations has the disadvantage that take great computer effort to solve large algebraic system of equations, the fractional step methodology is used to take advantage of the computational efficiency given by the uncoupling of the pressure from the velocity field. In addition, the generalized-α time integration scheme for fluids is adapted to be used with the fractional step technique.
The fluid-structure interaction problem is formulated as a three-field system: the structure, the fluid and the moving fluid mesh solver. Motion of the fluid domain is accounted for with the arbitrary Lagrangian-Eulerian formulation with two different mesh update strategies. The coupling between the fluid and the structure is performed with the strong coupling block Gauss-Seidel partitioned technique.
Since the fluid-structure interaction problem is highly nonlinear, a relaxation technique based on Aitken's method is implemented in the strong coupling formulation to accelerate the convergence.
Finally several example problems are presented in each field to verify the robustness and efficiency of the overall algorithm, many of them validated with reference solutions.
Alyagshi, Eilouch Mohamed Nazih. "A mixed method for transient analysis of structures including soil-structure interaction /". The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487264603218809.
Texto completoReeves, Deborah Edwards. "Interaction measures for nonsquare decentalized control structures". Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/10206.
Texto completoMabon, Lynne. "The interaction of wind and fabric structures". Thesis, University of Bath, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275786.
Texto completoBencheikh, Boubaker. "Interaction sols-structures : modélisation et résolution numérique". Lille 1, 1991. http://www.theses.fr/1991LIL10125.
Texto completoOrlof, Anna. "Quantum scattering and interaction in graphene structures". Doctoral thesis, Linköpings universitet, Matematik och tillämpad matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-136093.
Texto completoSedan isoleringen av grafen 2004, vilket belönades med Nobelpriset 2010, har intresset för grafen varit väldigt stort på grund av dess nya fysikaliska egenskaper med möjliga tillämpningar i elektronisk apparatur. Grafen har många egenskaper som skiljer sig från vanliga halvledare, exempelvis dess lågenergi-elektroner som beter sig som masslösa partiklar. För att kunna utnyttja dess fulla potential måste vi först undersöka vissa grundläggande egenskaper vilka beror på dess form, antal lager, defekter och interaktion. Målet med denna avhandling är att genomföra sådana undersökningar. I den första artikeln studerar vi elektrontransporter i monolager- och multilagergrafennanoband med en eller flera kortdistansdefekter, och fokuserar på inverkan av randstrukturen (zigzag vs armchair), härefter kallade zigzag-nanomband respektive armchair-nanoband. Vi upptäcker att ledningsförmågan hos zigzag-nanoband är praktiskt taget okänslig för defekter som ligger nära kanten, i skarp kontrast till armchairnanoband som påverkas starkt av sådana defekter även i små koncentrationer. När defektkoncentrationen ökar så försvinner skillnaden mellan de två randstrukturerna. Vi studerar också Fanoresonanser. I den andra artikeln betraktar vi elektron-elektron interaktion i grafen-kvantprickar som definieras genom en extern elektrostatisk potential med ett starkt magnetfält. Interaktionen visar sig i kompressibla band (compressible strips) i potentialfunktionens profil. Vi visar att kompressibla band manifesteras i uppkomsten av platåer i elektronenergierna som en funktion av det magnetiska fältet. Denna analys kompletteras i den sista artikeln (VI), vilken presenterar en allmän feluppskattning för egenvärden till linjära operatorer, och kan användas för energispektrumav kvantprickar betraktade i artikel II. I artiklarna III, IV och V fokuserar vi på spridning på ultra-låg långdistanspotential i grafennanoband. Vi utför en teoretisk analys av spridningsproblemet och betraktar de framåtskridande vågor, och dessutom några utökade vågor. Vi visar att analysen låter oss förutsäga förekomsten av fångade tillstånd inom ett specifikt energiintervall förutsatt att potentialen är tillräckligt liten.
Pitanti, Alessandro. "Light-matter interaction in silicon nanophotonic structures". Doctoral thesis, Università degli studi di Trento, 2010. https://hdl.handle.net/11572/368665.
Texto completoO'Connor, Joseph. "Fluid-structure interactions of wall-mounted flexible slender structures". Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/fluidstructure-interactions-of-wallmounted-flexible-slender-structures(1dab2986-b78f-4ff9-9b2e-5d2181cfa009).html.
Texto completoCharley, Jacques. "Dynamique de structures complexes hydroacoustique et couplage fluide-structure". [S.l.] : [S.n.], 2001. http://www.univ-lille1.fr/bustl-grisemine/pdf/extheses/50376-2001-127-128.pdf.
Texto completoWright, Melissa. "Studies of the phonetics-interaction interface : clicks and interactional structures in English conversation". Thesis, University of York, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425395.
Texto completoEyce, Bora. "An Investigation Of The Inertial Interaction Of Building Structures On Shallow Foundations With Simplified Soil-structure Interaction Analysis Methods". Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/2/12610994/index.pdf.
Texto completodashpot couple and fixed base models. Each system is analyzed for varying structural and soil stiffness conditions under the excitation of three different seismic records. Next, the total base shear acting on the structural system and internal forces of load bearing members are investigated to observe the inertial interaction and foundation uplift effects on the superstructure. It is also aimed to examine the compatibility of the simplified SSI approaches utilized in the analyses. It is concluded that the structural and soil stiffness parameters are the most influential parameters that affect seismic structural response. Structures becomemore sensitive to varying soil properties as the structural stiffness increases. On the other hand, decreasing soil stiffness also increases the sensitivity of the structure to the seismic excitation. Calculated values of total base shear and internal member forces revealed that the inertial interaction might be detrimental for the superstructure. Contrary to general belief, the fixed base approach does not always yield to the results, which are on the safe side. Considering the analysis results, it is concluded that SSI analysis is very useful for more precise and economical design for the seismic behavior.
VIANA, EDUARDO ARREGUY. "STRUCTURE-SOIL INTERACTION BY FRAME STRUCTURES UNDER DYNAMIC LOADS DUE TO RECIPROCATING COMPRESSORS". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=21832@1.
Texto completoCompressores de gás de grande porte são componentes fundamentais em plantas industriais de refino de petróleo, atuando principalmente como agentes fornecedores de energia mecânica aos processos químicos. Dentre os tipos de compressores, destacam-se os alternativos. Devido a exigências de processo químico e arranjo industrial, é comum a instalação desses equipamentos em estruturas aporticadas, fato que, associado às características do movimento de suas partes mecânicas, não raramente as cargas dinâmicas geradas provocam vibrações inadmissíveis. Neste trabalho é avaliado o comportamento dinâmico de um sistema formado por uma estrutura aporticada, por compressor alternativo, pela fundação em estacas e finalmente pelo próprio solo. O estudo paramétrico realizado se desenvolve a partir de uma análise de modelos simplificados massa-mola, de um modelo em elementos finitos e de medições de campo visando a estabelecer intervalos de valores dos parâmetros do solo local dentro dos quais se identifique as características da resposta dinâmica do sistema. São avaliados os parâmetros coeficiente de mola (km) e a constante do coeficiente de reação horizontal (nh) do solo natural típico da área abrangida pela refinaria REPAR, localizada no município de Araucária, no estado do Paraná, solo esse pertencente à formação geológica denominada Guabirotuba. A avaliação do comportamento dinâmico do sistema através dos modelos desenvolvidos é balizada por valores de medição na estrutura real de velocidades de vibração efetivas, obtidas por instrumentação. Os parâmetros do solo são obtidos por retroanálise de resultados de ensaio de campo, utilizando-se dois modelos amplamente utilizados nos escritórios de projeto: modelo proposto por Miche (1932) e modelo proposto por Hetenyi (1946). O primeiro considera que os parâmetros do solo variam com a profundidade, e o segundo os considera constante com a profundidade. Busca-se avaliar também a influência de parâmetros do solo obtidos através de ensaios de carregamento estático (ABNT NBR 12131, 2006) e obtidos através de ensaios de carregamento estático cíclico, este último se propondo a simular o efeito dinâmico sobre o solo. Finalmente, compara-se os resultados fornecidos pelos modelos simplificados e pelo modelo em elementos finitos em termos das freqüências naturais de vibração.
Gas compressors are key components of industrial plants in oil refining, mainly acting as mechanical energy suppliers to chemical processes. Among the types of compressors, the reciprocating ones is highlighted. Due to mandatory demands of chemical process and industrial arrangement, it is common to install such equipment in framed structures. This condition and the typical movement of mechanical parts of the compressors generate dynamic loads which frequently causes unacceptable vibrations. The aim of the present work is to evaluate the dynamic behavior of a system consisting of a framed structure, a reciprocating compressor, foundation in piles and the soil itself. For this purpose, parametric study is developed from simplified spring-mass models, a finite element model and field measurements. The parametric study is aimed at establish ranges of local soil parameters within which the dynamic behavior of a system can be understood and measured. The parameters so-called spring stiffness (km) and the constant coefficient of horizontal reaction (nh) of natural soil which typically occurs in the area covered by the REPAR refinery, located in Araucaria, Paraná, are then evaluated. This type of natural soils belongs to the geological formation called Guabirotuba. The evaluation of the dynamic behavior of the system through the developed models is benchmarked by field measurements of effective velocity of vibration in the actual structure, obtained by instrumentation. The soil parameters are obtained by back analysis of tests results by using two models widely used in design offices: model proposed by Miche (1932) and model proposed by Hetenyi (1946). The first one takes in account the variation of the soil parameters with depth, and the second one considers soil parameters constant with depth. The aim is also to evaluate the influence of the soil parameters obtained by static and cyclic horizontal loading tests, the latter being proposed to simulate the dynamic effect on the soil. Finally, it is done comparisons of the results provided by simplified models and the finite element model in terms of natural frequencies of vibration.
Borglund, Dan. "Control and optimization of structures with fluid interaction". Doctoral thesis, KTH, Flygteknik, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2956.
Texto completoQC 20100421
Bennett, Gary Stuart. "Mathematical modelling of wave interaction with vertical structures". Thesis, Brunel University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332808.
Texto completoMatelon, R. J. "The interaction of light with periodic magnetic structures". Thesis, Coventry University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289100.
Texto completoWalker, Daniel Anthony Guy. "Interaction of extreme ocean waves with offshore structures". Thesis, University of Oxford, 2006. http://ora.ox.ac.uk/objects/uuid:6858dc08-1bd4-4195-8893-1af98d5e68e3.
Texto completoBrocklehurst, Paul. "Hydroelastic waves and their interaction with fixed structures". Thesis, University of East Anglia, 2012. https://ueaeprints.uea.ac.uk/47911/.
Texto completoTee, Chee Heong. "Dynamic response of plates and buried structures". Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3803.
Texto completoTitle from document title page. Document formatted into pages; contains xi, 87 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 76-78).
Nagy, N. M. A. "Dynamic soil structure interaction of buried concrete structures under the effect of blast loads". Thesis, University of Bradford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.534654.
Texto completoDemma, Alessandro. "The interaction of guided waves with discontinuities in structures". Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405756.
Texto completoBalzer, Robert [Verfasser]. "Interaction of water with oxide glass structures / Robert Balzer". Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2019. http://d-nb.info/1198398655/34.
Texto completoParmar, Rina. "The interaction of a model steroid with phospholipid structures". Thesis, University College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265759.
Texto completoCooker, Mark. "The interaction between steep water waves and coastal structures". Thesis, University of Bristol, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292466.
Texto completoSoldemo, Markus. "Transition metal oxide surfaces : Surface structures and molecular interaction". Doctoral thesis, KTH, Materialfysik, MF, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-196130.
Texto completoQC 20161114
Lourenço, Leandro Miguel de Oliveira. "Phthalocyanines : interaction with carbon structures and as PDT agents". Doctoral thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13125.
Texto completoThis dissertation describes the synthesis and characterization of different phthalocyanine (Pc) derivatives, as well as some porphyrins (Pors), for supramolecular interaction with different carbon nanostructures, to evaluate their potential application in electronic nanodevices. Likewise, it is also reported the preparation and biological evaluation of interesting phthalocyanine conjugates for cancer photodynamic therapy (PDT) and microorganisms photodynamic inactivation (PDI). The phthalonitrile precursors were prepared from commercial phthalonitriles by nucleophilic substitution of -NO2, -Cl, or -F groups, present in the phthalonitrile core, by thiol or pyridyl units. After the synthesis of these phthalonitriles, the corresponding Pcs were prepared by ciclotetramerization using a metallic salt as template at high temperatures. A second strategy involved the postfunctionalization of hexadecafluorophthalocyaninato zinc(II) through the adequate substituents of mercaptopyridine or cyclodextrin units on the macrocycle periphery. The different compounds were structurally characterized by diverse spectroscopic techniques, namely 1H, 13C and 19F nuclear magnetic resonance spectroscopies (attending the elemental composition of each structure); absorption and emission spectroscopy, and mass spectrometry. For the specific photophysical studies were also used electrochemical characterization, femtosecond and raman spectroscopy, transmission electron and atomic force microscopy. It was highlighted the noncovalent derivatisation of carbon nanostructures, mainly single wall carbon nanotubes (SWNT) and graphene nanosheets with the prepared Pc conjugates to study the photophysical properties of these supramolecular nanoassemblies. Also, from pyridyl-Pors and ruthenium phthalocyanines (RuPcs) were performed Por-RuPcs arrays via coordination chemistry. The results obtained of the novel supramolecular assemblies showed interesting electron donor-acceptor interactions and might be considered attractive candidates for nanotechnological devices. On the other hand, the amphiphilic phthalocyanine-cyclodextrin (Pc-CD) conjugates were tested in biological trials to assess their ability to inhibit UMUC- 3 human bladder cancer cells. The results obtained demonstrated that these photoactive conjugates are highly phototoxic against human bladder cancer cells and could be applied as promising PDT drugs.
Esta dissertação descreve a síntese e caracterização de diferentes derivados de ftalocianina (Pc), assim como de algumas porfirinas (Pors), para interação supramolecular com diferentes nanoestruturas de carbono para potencial aplicação em nanodispositivos eletrónicos. Igualmente, é também reportado a preparação e avaliação biológica de interessantes conjugados de Pc para a terapia fotodinâmica (PDT) de cancro e para a fotoinativação de microrganismos (PDI). Neste trabalho científico são discutidas as propriedades gerais das Pcs e metodologias sintéticas usadas na sua preparação, bem como algumas das suas importantes aplicações. Os precursores ftalonitrilo foram preparados a partir de ftalonitrilos comerciais por substituições nucleofílicas de grupos -NO2, -Cl ou -F, presentes no núcleo ftalonitrilo, por unidades tiol ou piridilo. As correspondentes Pcs foram preparadas por ciclotetramerização dos ftalonitrilos, previamente sintetizados, na presença de um sal metálico a temperaturas elevadas. Uma segunda estratégia envolveu a pós-funcionalização na periferia do macrociclo da ftalocianina hexadecafluor de zinco(II) com unidades de mercaptopiridina ou ciclodextrina. Os diferentes compostos foram caracterizados estruturalmente por diversas técnicas espectroscópicas, nomeadamente espectroscopia de ressonância magnética nuclear de 1H, 13C e 19F (atendendo à composição elementar de cada estrutura), espectroscopia de absorção e de emissão, e espectrometria de massa. Para estudos fotofísicos específicos foram também usadas a caracterização electroquímica, espectroscopia de femtossegundo e raman, microscopia de transmissão eletrónica e de força atómica. Foi realizado a derivatização não covalente de nanoestruturas de carbono, principalmente nanotubos de carbono de parede simples (SWNT) e nanofolhas de grafeno, com os conjugados de ftalocianina preparados, para dessa forma estudar as propriedades fotofísicas dessas nanoassembleias supramoleculares. Também, a partir de Pors-piridilo e ftalocianinas de ruténio (RuPcs) foram realizadas matrizes de Por-RuPcs via química de coordenação. Os resultados obtidos mostraram interessantes interações eletrónicas doador-aceitador e podem ser considerados candidatos atrativos para diversos dispositivos nanotecnológicos. Por outro lado, os conjugados anfifílicos de ftalocianina-ciclodextrina (Pc-CD) foram testados em ensaios biológicos para avaliar a sua capacidade de inibir células cancerígenas UM-UC-3 da bexiga humana. Os resultados obtidos demonstraram que estes conjugados fotoativos são altamente fototóxicos contra este tipo de células, mostrando-se bastante promissores como agentes em PDT.
Harris, Simon. "Trainer talk : structures of interaction in teacher training classrooms". Thesis, Aston University, 2012. http://publications.aston.ac.uk/17471/.
Texto completoKeyhani, Ali. "A Study On The Predictive Optimal Active Control Of Civil Engineering Structures". Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/223.
Texto completoTran, Phong Lan Thao. "Quadruplexes de guanines : formation, stabilité et interaction". Thesis, Bordeaux 2, 2011. http://www.theses.fr/2011BOR21888/document.
Texto completoGuanine quadruplexes (G4) are non-canonical four-stranded nucleic acid structures formed by guanine-rich DNA and RNA sequences. Theses polymorphic structures are built from the stacking of several G-quartets and could be involved in many fields, in biotechnology as well as in nanotechnology. The study of modified tetramolecular G4 presented in this manuscript participated to the understanding of tetramolecular G4 formation. Especially, we showed that the insertion of 8-methyl-2’-deoxyguanosine at the 5’-end of the sequence accelerate G4 formation and increase its stability. Besides, we demonstrate here that short guanine rich L-DNA strands (mirror image of natural DNA) form a tetramolecular G4 with the same properties than their enantiomer, but with opposite chirality. The study revealed also self-exclusion between two enantiomers (D- and L- form), showing the controlled parallel self-assembly of different G-rich strands. This work introduced also a simple and stable system to observe tetramolecular antiparallel G4 formation, called “synaptic DNA”, into a DNA origami nanostructure. In vivo, such structures appear to be implicated in genome dynamics, and especially at telomeres. During this thesis, we dedicated a study to the comparison of G4 folding and stability of known telomeric sequences from different organisms. The present study allowed enriching the dataset necessary to build and refine algorithms predicting G4 stability. Last but not least, we developed a G4 ligand screening method onto 96-well plates allowing the comparison of different biological relevant sequences. The G4 stabilisation by specific ligands in some genome regions may prevent cancer cell proliferation, making it an attractive target for anticancer therapy
Besset, Sébastien Jézéquel Louis. "Optimisation du comportement vibro-acoustique des structures à l'aide d'une synthèse modale généralisée". [S.l.] : [s.n.], 2006. http://bibli.ec-lyon.fr/exl-doc/sbesset.pdf.
Texto completoLehmann, Lutz. "Wave propagation in infinite domains : with applications to structure interaction /". Berlin [u.a.] : Springer, 2007. http://www.gbv.de/dms/bs/toc/523903820.pdf.
Texto completoKundu, Anirban y Anirban Kundu. "Aspects of Dzyaloshinskii-Moriya Interaction in Two Dimensional Magnetic Structures". Diss., The University of Arizona, 2018. http://hdl.handle.net/10150/626682.
Texto completoAntonova, Tetyana. "Interaction of particles with complex electrostatic structures and 3D clusters". Diss., kostenfrei, 2007. http://edoc.ub.uni-muenchen.de/8485/.
Texto completoIsic, Goran. "Electron transport in resonant tunnelling structures with spin-orbit interaction". Thesis, University of Leeds, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.545696.
Texto completoGehl, Michael R. "Controlling Light-Matter Interaction in Semiconductors with Hybrid Nano-Structures". Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/581325.
Texto completoFaghihirad, Shervin. "Modelling of flows through hydraulic structures and interaction with sediment". Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/62107/.
Texto completoMa, Qingwei. "Numerical simulation of nonlinear interaction between structures and steep waves". Thesis, University College London (University of London), 1998. http://discovery.ucl.ac.uk/1317930/.
Texto completoBasturkmen, Helen L. "The discourse of academic seminars : structures and strategies of interaction". Thesis, Aston University, 1995. http://publications.aston.ac.uk/14855/.
Texto completoEvans, Diane. "Hierarchical intermolecular interaction models of N-heteroaromatic STM adlayer structures". College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/7761.
Texto completoThesis research directed by: Dept. of Chemistry and Biochemistry. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Wijesooriya, Kasun Danushka. "An Uncoupled Fluid-Structure Interaction Numerical Framework to Estimate Wind Induced Loads on Super-tall Structures". Thesis, University of Sydney, 2021. https://hdl.handle.net/2123/24515.
Texto completoPinna, Rodney. "Buckling of suction caissons during installation". University of Western Australia. School of Civil Engineering, 2003. http://theses.library.uwa.edu.au/adt-WU2004.0008.
Texto completoSuliman, Ridhwaan. "Development of parallel strongly coupled hybrid fluid-structure interaction technology involving thin geometrically non-linear structures". Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/24288.
Texto completoDissertation (MEng)--University of Pretoria, 2012.
Mechanical and Aeronautical Engineering
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