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Dissertations / Theses on the topic 'Structural assemblies'

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1

Yeboah, David. "Rigid connections in structural timber assemblies." Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580103.

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Bonded-in rod joints have several advantages over the conventional type of joints in terms of performance, cost and aesthetics. The use of basalt fibre reinforced polymer (BFRP) rods would result in lower weight of the joint and improved resistance to corrosion but there appears to be little or no investigation on the use of these rods in the bonded-in rod technique. The aim of this research was to examine the behaviour of bonded-in BFRP and steel rods and to propose design models to enhance current knowledge in bonded-in rod technology. The mechanical properties of the timber members were cha
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Overend, Mauro. "The appraisal of structural glass assemblies." Thesis, University of Surrey, 2002. http://epubs.surrey.ac.uk/804385/.

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3

Khor, Han Chuan. "Mechanical and structural properties of interlocking assemblies." University of Western Australia. School of Civil and Resource Engineering, 2008. http://theses.library.uwa.edu.au/adt-WU2009.0026.

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A novel way to ensure stability of mortarless structures – topological interlocking – is examined. In this type of interlocking the overall shape and arrangement of the building blocks are chosen in such a way that the movement of each block is prevented by its neighbours. (The methodological roots of topological interlocking can be found in two ancient structures: the arch and the dry stone wall.) The topological interlocking proper is achieved by two types of blocks: simple convex forms such as the Platonic solids (tetrahedron, cube, octahedron, dodecahedron and icosahedron) that allow plate
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4

Marcaida, Maria Josefina. "Structural studies of prokaryotic genetic regulatory assemblies." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613892.

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5

Bagheri, Mehran. "Intrinsically Disordered Proteins: Mechanics, Assemblies, and Structural Transitions." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36576.

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Proteins are essential parts of living organisms that initiate and control almost all cellular processes. Despite the widely accepted belief that all functional proteins fold into stable and well-defined three-dimensional (3D) structures mandatory for protein activity, the existence of biologically functional disordered proteins has been increasingly recognized during past two decades. Proteins with inherent structural disorder, commonly known as intrinsically disordered proteins (IDPs), play many roles in a biological context. However, in contrast to their folded counterparts, they are dynami
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6

Ma, Zhao M. Eng Massachusetts Institute of Technology. "Equilibrium analysis of topological interlocking for structural assemblies." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111275.

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Thesis: M. Eng. in Structural Mechanics and Design, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2017.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 67-[70]).<br>This thesis presents an exploration of topological interlocking system of structural assemblies. By analysing existing topological structures, a mathematical theory is constructed to d
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7

Johnson, Lucy. "Microstructural characterisation of structural bolt assemblies in fire." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/7730/.

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In structural fire engineering, the importance of bolt assemblies is often overlooked. Connection design uses the temperature-dependent bolt strength-reduction factors prescribed in Eurocode 3, despite the existence of two distinct failure modes under tension; bolt breakage, and thread-stripping. This thesis investigates the factors which influence failure modes at ambient and elevated temperatures and a range of strain-rates through microstructural characterisation, tensile testing and finite element modelling. Microstructural characterisation carried out on M20 galvanised bolt assemblies con
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8

Ali, Mohamad. "Assemblages structuraux des convertisseurs de puissance." Thesis, Toulouse, INPT, 2009. http://www.theses.fr/2009INPT003H/document.

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L'accroissement des performances des équipements de Traction ferroviaire, reposait essentiellement jusqu'à maintenant, sur l'intégration des innovations dans le domaine des composants électriques et des matériaux diélectriques mais la standardisation de sous-ensembles réutilisables nous conduit à reconsidérer les assemblages structuraux des coffres de traction (convertisseurs de puissance). Ces coffres de traction sont assemblés actuellement avec des éléments de fixation mécanique (boulon, rivet), le but est donc d'améliorer la connaissance des comportements mécaniques de ces types d'assemblag
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9

Rancourt, Derek Gerard. "Structural Behavior of Wood I-Joist/OSB Roof Panel Assemblies." Fogler Library, University of Maine, 2010. http://www.library.umaine.edu/theses/pdf/RancourtDG2010.pdf.

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10

Lee, Hung-Hsun. "Structural Studies of Oligo(ethylene glycol)-Containing Assemblies on Gold." Doctoral thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-77056.

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The work presents in this thesis has been focused on structural  characterization of a series of selected well-defined molecular architectures for the application as biomimetic membranes. The molecular architectures were prepared by self-assembly from dilute solution onto gold substrates, so called self-assembled monolayers (SAMs). Biological membranes are essential components for all living systems; their molecular organizations and interactions with intra- and extracellular networks are key factors of cell functions. Many important biological processes are regulated at membrane interfaces vi
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11

Bayro, Marvin J. "Protein MAS NMR methodology and structural analysis of protein assemblies." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/57800.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2010.<br>Vita. Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Methodological developments and applications of solid-state magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy, with particular emphasis on the analysis of protein structure, are described in this thesis. MAS NMR studies of biomolecules ranging from model peptides and proteins in crystalline form to amyloid fibrils and whole bacterial organelles are reported. The methods presented include novel pulse sequ
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12

Khadra, Ghassan. "Magnetic and structural properties of size-selected FeCo nanoparticle assemblies." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10145/document.

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Dans ce travail, nous nous sommes intéressés aux propriétés magnétiques intrinsèques (moments et anisotropie magnétiques) de nanoparticules bimétalliques fer-cobalt. Pour cela, des agrégats FeCo dans la gamme de taille 2-6 nm ont été préparés en utilisant la technique MS-LECBD (Mass Selected Low Energy Cluster Beam Deposition) et enrobés en matrice in − situ afin de les séparer, d'éviter leur coalescence pendant les recuits et de les protéger à leur sortie à l'air. Dans un premier temps, les propriétés structurales (dispersion de taille, morphologie, composition, structure cristallographique) o
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13

Yamamoto, Shinpei. "Structural Control and Physical Properties of Polymer Assemblies at Interfaces." Kyoto University, 2000. http://hdl.handle.net/2433/180984.

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14

Mancl, Jordan Michael. "Molecular Investigations of Protein Assemblies Involved in Prokaryotic Virulence." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/102298.

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Protein complexes mediate a diverse range of behavior in prokaryotic cells, yet the exact molecular mechanisms explaining how many of these complexes assemble and function remain unknown. This work focuses on understanding the molecular mechanisms of two different protein assemblies responsible for regulating virulence in the opportunistic pathogen Pseudomonas aeruginosa. P. aeruginosa utilizes type IV pili (T4P) to adhere to, and move along, surfaces. Assembly of T4P is powered by a dedicated cytoplasmic ATPase, PilB. The structural study of PilB from a related system (chapter 2) resulted in
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15

Persson, Karina. "Structural studies of protein assemblies : MHC class I and lumazine synthase /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5499-9.pdf.

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16

Sidhu, Jagraj. "Equilibrium and structural studies of polymer / surfactant assemblies in aqueous solution." Thesis, University of Salford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420463.

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Vigers, G. P. A. "Clathrin assemblies in vitreous ice : A structural analysis by image reconstruction." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377261.

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18

Hodgins, Blake. "The Numerical Prediction of the Dent Resistance of Aluminum Structural Panel Assemblies." Thesis, University of Waterloo, 2001. http://hdl.handle.net/10012/910.

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An examination of static and dynamic dent resistance of structural panel assemblies representing automotive hoods is described in this thesis. Fabricated panel assemblies incorporating typical components of real automotive parts were tested. The panel assemblies included an AA5754 inner panel using an array of teacup supports and an AA6111 closure panel joined with automotive mastic. The assemblies allowed for parametric assessment of numerous factors affecting dent resistance including: panel thickness, panel curvature, panel support configuration and dent site location. An extensi
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19

Gao, Min. "Structural and Dynamic Studies of Supramolecular Assemblies by Solid State NMR Spectroscopy." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1385135235.

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20

Sternchüss, Arnaud. "Multi-level parametric reduced models of rotating bladed disk assemblies." Phd thesis, Ecole Centrale Paris, 2009. http://tel.archives-ouvertes.fr/tel-00366252.

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Les disques aubagés, que l'on trouve dans les turbomachines, sont des structures complexes dont le comportement vibratoire est généralement déterminé par l'exploitation de conditions de symétrie dans leur configuration nominale. Cette symétrie disparaît lorsque l'on assemble plusieurs de ces disques pour former un rotor ou que l'on introduit une variabilité spatiale des paramètres mécaniques (on parle de désaccordage intentionnel ou non). Le raffinement des maillages, nécessaire à une évaluation correcte de la répartition des contraintes, conduirait à des modèles de rotor complet de taille pro
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21

Papadakis, Loucas. "Simulation of the Structural Effects of Welded Frame Assemblies in Manufacturing Process Chains /." München : Utz, 2008. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016680918&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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22

Bolmsvik, Åsa. "Structural-acoustic vibrations in wooden assemblies: : Experimental modal analysis and finite element modelling." Doctoral thesis, Linnéuniversitetet, Institutionen för bygg- och energiteknik (BE), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-24562.

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This doctoral thesis concerns flanking transmission in light weight, wooden multi-storey buildings within the low frequency, primarily 20-120 Hz. The overall aim is to investigate how the finite element method can contribute in the design phase to evaluate different junctions regarding flanking transmission. Two field measurements of accelerations in light weight wooden buildings have been evaluated. In these, two sources; a stepping machine, and an electrodynamic shaker, were used. The shaker was shown to give more detailed information. However, since a light weight structure in field exhibit
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23

Casanova, Massimo. "Design preparation and structural characterization of new metal mediated supramolecular assemblies of porphyrins." Doctoral thesis, Università degli studi di Trieste, 2008. http://hdl.handle.net/10077/2631.

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2006/2007<br>Si riporta le sintesi mediata da metalli (Ru(II) e Re(I)) di nuovi addotti supramolecolari di porfirine aventi proprietà fotofiche. Si riporta in dettaglio la loro preparazione, sintesi e caratterizzazione in fase liquida e in fase solida.<br>XX Ciclo<br>1980
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24

Plaschka, Clemens. "Integrative structural and functional studies of Mediator and RNA polymerase II transcription initiation assemblies." Diss., Ludwig-Maximilians-Universität München, 2015. http://nbn-resolving.de/urn:nbn:de:bvb:19-183215.

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Gene transcription is a fundamental process of the living cell. Eukaryotic transcription of messenger RNA requires the regulated recruitment of the conserved transcribing enzyme RNA polymerase (Pol) II to the gene promoter. The most heavily regulated step is transcription initiation that involves the ordered assembly of Pol II, the general transcription factors (TF) -IIA, -IIB, -IID, -IIF, -IIE, -IIH and the co-activator Mediator complex. Mediator communicates between transcription regulators and Pol II, and is associated with human disease. Mediator from the yeast Saccharomyces cerevisiae (Sc
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25

Shannon, Matthew D. "High Resolution Structural and Dynamic Studies of Biomacromolecular Assemblies using Solid-State NMR Spectroscopy." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1534321838601796.

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26

Shoukr, Shoukry Latif. "Contact stresses in interference-fit joints with application to sugar-mill roller assemblies." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184928.

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The interference-fit joint is widely used in machine design to connect two cylindrical machine elements. Its popularity comes from the simplicity of the assembly and the low cost of the production process. Even so, no study has examined the boundary non-linearities in the assembly of these joints. Moreover, the contact stresses and the stress concentration factors in interference-fit joints under torsional loads have not yet been examined in detail. In addition, the interface stresses and stress concentration factors in interference-fit joints subjected to bending loads have not been approache
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Sahlin, Kristoffer. "Algorithms and statistical models for scaffolding contig assemblies and detecting structural variants using read pair data." Doctoral thesis, KTH, Beräkningsbiologi, CB, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173580.

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Advances in throughput from Next Generation Sequencing (NGS) methods has provided new ways to study molecular biology. The increased amount of data enables genome wide scale studies of structural variation, transcription, translation and genome composition. Not only is the scale of each experiment large; lowered cost and faster turn-around has also increased the frequency with which new experiments are conducted. With the data growth comes an increase in demand for efficient and robust algorithms — this is a great computational challenge. The design of computationally efficient algorithms are
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Jones, Jason William. "Enhanced Architectural and Structural Regulation Using Controlled Free Radical Polymerization Techniques; Supramolecular Assemblies: Pseudorotaxanes and Polypseudorotaxanes." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/31766.

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Due in large part to the growth and development of reliable surface characterization techniques, as well as to advances in the physical and chemical techniques used to modify surfaces, the technology of surface modification has seen rapid expansion over the past two decades. A major thrust of this research is the growth of controlled/"living" polymeric brushes from the surface of various substrates, an advance that promises to be a facile and reproducible way of altering surface properties. A unique initiator bearing ATRP (atom transfer radical polymerization), cleavage, and condensation fun
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Brown, Douglas J. "Heteroleptic paddlewheel complexes and molecular assemblies of dimolybdenum and ditungsten a study of electronic and structural control /." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1150289057.

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Uesaka, Akihiro. "Precise Structural and Functional Control of Molecular Assemblies Composed of Amphiphilic Peptides Having a Hydrophobic Helical Block." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199273.

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31

Salam, Claro Diego. "Wave-based numerical approaches for non-destructive testing of structural assemblies involving straight waveguides and curved joints." Electronic Thesis or Diss., Bourges, INSA Centre Val de Loire, 2024. http://www.theses.fr/2024ISAB0003.

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Cette thèse étudie la détection et la localisation des défauts dans les assemblages de guides d'ondes, en explorant l'interaction entre les ondes se propageant dans des assemblages de guides d'ondes droits contenant des jonctions coudées et des défauts. A cet effet, la méthode Wave Finite Element (WFE) est utilisée. Des expériences numériques valident la robustesse et la précision de la méthode WFE à partir de comparaisons avec des solutions analytiques et éléments finis, en se concentrant particulièrement sur les courbes de dispersion et les réponses forcées. En élargissant l'étude aux assemb
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Anantharaman, Ganapathi. "Synthesis and structural studies of group 12 metallasiloxane and phosphonate aggregates precursors for metal silicate and phosphate assemblies /." [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=97033754X.

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Sofia, Sofia. "Structural and photophysical properties of supramolecular assemblies based on [M(diimine)(CN)4]2- (M = Ru, Os) complexes." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505437.

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This Thesis is concerned with the preparation and study of photo active cyanometallate complexes. Chapters 2 to 4 focus on the photophysical and structural properties of these complexes when involved in hydrogen-bonded or halogenbonded supramolecular assemblies. The last two Chapters mainly deal with the synthesis of some new polynuclear cyanometallate complexes of osmium(II) and ruthenium(II) and report on their characterisation. Chapter 1: provides an introduction to supramolecular photochemistry of Ru(polypyridyl) complexes. The emphasis is on [Ru(bipy)(CN)4f', with a quick review of its ma
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34

Itagaki, Toru. "Investigation on Structural High-Order Organization of Molecular Assemblies Composed of Amphiphilic Polypeptides Having a Hydrophobic Helical Block." Kyoto University, 2019. http://hdl.handle.net/2433/242516.

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Aberkane, Leïla. "Etude des mécanismes de structuration d’assemblages β-lactoglobuline-gomme d’Acacia en présence d’un flavonoïde, la quercétine". Thesis, Vandoeuvre-les-Nancy, INPL, 2010. http://www.theses.fr/2010INPL045N/document.

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Les flavonoïdes sont des ingrédients prometteurs pour différentes applications alimentaires et non alimentaires, grâce à leurs propriétés antioxydantes et biologiques. Cependant, la formulation de ces molécules est difficile à réaliser en raison de leur faible solubilité dans la plupart des solvants. Afin de remédier à cette difficulté, l’approche suivie dans cette étude est l’incorporation des flavonoïdes dans des particules à base de biopolymères (protéine-polysaccharide), stables et fonctionnelles. Le principal objectif de cette thèse était d’acquérir des connaissances à différentes échelle
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36

Panagiotidis, Christos [Verfasser], Günter von [Akademischer Betreuer] Kiedrowski, and Frank [Akademischer Betreuer] Schulz. "Sequence-addressed assemblies of trisoligonucleotides into nanoscale motifs and structural studies / Christos Panagiotidis. Gutachter: Günter von Kiedrowski ; Frank Schulz." Bochum : Ruhr-Universität Bochum, 2016. http://d-nb.info/1095884778/34.

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Plaschka, Clemens [Verfasser], and Patrick [Akademischer Betreuer] Cramer. "Integrative structural and functional studies of Mediator and RNA polymerase II transcription initiation assemblies / Clemens Plaschka. Betreuer: Patrick Cramer." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2015. http://d-nb.info/1073825833/34.

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Anagnostopoulou, Evangelia. "A new route for rare-earth free permanent magnets : synthesis, structural and magnetic characterizations of dense assemblies of anisotropic nanoparticles." Thesis, Toulouse, INSA, 2016. http://www.theses.fr/2016ISAT0045/document.

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Cette thèse a eu pour objectif la préparation d’aimants nanostructurés sains terres rares à base d’un assemblage dense de nanobâtonnets de cobalt (Co NBs). Nous avons démontré la faisabilité d’un changement d’échelle du procédé polyol, avec des conditions d’agitation contrôlées, pour obtenir 5 g de NBs monodisperse. La modification de l’agent nucléant nous a permis de contrôler la taille et la forme des NBs conduisant à des valeurs élevées de champ coercitif. La réalisation d’aimants macroscopiques denses et robustes a été possible via la dispersion des bâtonnets dans du chloroforme et son éva
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Harman, Kelly. "Structural integrity of lightweight wood truss assemblies exposed to fire : an insight to the behavior of metal truss plate connectors /." Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1136091331&sid=23&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Agarwal, Deepesh. "Sur quelques problèmes algorithmiques relatifs à la détermination de structure à partir de données de spectrométrie de masse." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4048/document.

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La spectrométrie de masse, initialement développée pour de petites molécules, a permis au cours de la dernière écoulée d’étudier en phase gazeuse des assemblages macro-moléculaires intacts, posant nombre de questions algorithmiques difficiles, dont trois sont étudiées dans cette thèse. La première contribution concerne la détermination de stoichiométrie (SD), et vise à trouver le nombre de copies de chaque constituant dans un assemblage. On étudie le cas où la masse cible se trouve dans un intervalle dont les bornes rendent compte des incertitudes des mesures des masses. Nous présentons un alg
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Jones, Christopher Michael. "Characterization of Macromolecular Protein Assemblies by Collision-Induced and Surface-Induced Dissociation: Expanding the Role of Mass Spectrometry in Structural Biology." Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/193581.

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This dissertation presents an investigation into the structure of macromolecular protein assemblies by mass spectrometry. The experiments described within are designed to systematically assess the analytical utility of surface-induced dissociation (SID) tandem mass spectrometry in the characterization of multi-subunit protein complexes. This is accomplished by studying the effects of ion-surface collision on the fragmentation products of protein assemblies that vary by mass, number of subunits, and protein structural features. The dissociation energetics and mechanisms of protein complexes are
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42

El, Mammeri Nadia. "Etude d'assemblages protéiques biologiques supramoléculaires par RMN du solide." Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0217.

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Ma thèse a pour buts l'élucidation fonctionnelle et l'étude structurale de nanomachines biologiques en utilisant principalement la RMN du solide : (i) La protéine SesB trouvée chez Nectria haematococca, dont l'assemblage en fibrilles amyloïdes, serait impliquée dans les mécanismes de signalisation de mort cellulaire programmée. En utilisant la RMN du solide avec rotation à l’angle magique, un nouveau modèle structural de cet amyloïde a été établi pour les fibrilles amyloïdes SesB de Nectria haematococca. (ii) Des protéines appelées TasA, TapA et CalY dont l'assemblage en fibrilles amyloïdes es
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Shahbazian, Ashkan. "Simplified thermal and structural analysis methods for cold-formed thin-walled steel studs in wall panels exposed to fire from one side." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/simplified-thermal-and-structural-analysis-methods-for-coldformed-thinwalled-steel-studs-in-wall-panels-exposed-to-fire-from-one-side(6aec12ea-0d18-43a6-b594-0f7bc4adca1c).html.

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The advantages of cold-formed thin-walled steel studs are many and their applications in building constructions continue to grow. They are used as load-bearing members. An example is lightweight wall panel assemblies which consist of channel steel studs with gypsum plasterboard layers attached to the two flanges, often with interior insulation. At present, expensive fire tests or advanced numerical modelling methods are necessary in order to discover the fire resistance of such wall assemblies. For common practice this is not effective and a simplified method, suitable for use in daily design,
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Basbous, Hind. "Etudes structurales et propriétés enzymatiques de deux nouvelles aminopeptidases TETs auto-compartimentées chez les archées." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAV016/document.

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Les aminopeptidases représentent un groupe d’enzymes qui possèdent une fonction cellulaire clef dans les mécanismes physiologiques et pathologiques. Elles interviennent dans la cascade enzymatique après l’action des endoprotéases, dans l’homéostasie au travers le renouvellement du pool d’acides aminés, dans le métabolisme énergétique, la régulation de l’activité des peptides bioactifs, la présentation antigénique ainsi dans une diversité de mécanismes pathologiques tels que les maladies neurologiques et les infections virales et parasitaires. Les aminopeptidases TETs sont capables de former de
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Stockton, William B. (William Blake). "Structure and electrical properties of assemblies of polyaniline : from blends to self-assembled multilayers." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/32660.

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Mahieu, Emilie. "Étude du mécanisme d’action du protéasome PAN-20S par diffusion de neutrons aux petits angles résolue en temps." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAY073.

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Les protéasomes sont de grands assemblages macromoléculaires ubiquitaires composés d’un complexe catalytique 20S et d’une particule régulatrice comprenant un module AAA-ATPase. Cette machine cellulaire est chargée de dégrader sélectivement les protéines intracellulaires pour permettre le renouvellement du protéome, éliminer les protéines défectueuses et contrôler de nombreuses fonctions biologiques. Le travail de cette thèse avait pour objectif de mettre à jour les mécanismes qui permettent aux complexes AAA-ATPase de déplier sélectivement les protéines substrat et de les transférer à la parti
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47

Gant, Florent. "Stratégie de modélisation et de simulation des assemblages de structures aéronautiques en contexte incertain." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2011. http://tel.archives-ouvertes.fr/tel-00675741.

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Abstract:
Ce travail de recherche présente une stratégie de modélisation et de dimensionnement pour les assemblages boulonnés en milieu aéronautique. Dans le cas du dimensionnement de grandes structures, les bureaux d'étude se servent habituellement de techniques dites de " zoom structural ". Elles permettent de gérer les ressources numériques à disposition, avec des modèles simples et de grande taille à l'échelle globale, et des modèles plus complexes à l'échelle locale. Cette étude s'insère dans le cadre d'un processus de zoom structural dans lequel les structures étudiées présentent un très grand nom
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48

Peyret, Nicolas. "Dissipation de l’énergie mécanique dans les assemblages : effet du frottement en sollicitation dynamique." Thesis, Paris Est, 2012. http://www.theses.fr/2012PEST1052/document.

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Cette thèse porte sur l'étude de l'amortissement des structures assemblées, et plus précisément de la contribution des assemblages sous sollicitations vibratoires. Le mémoire est composé de cinq chapitres traitant la problématique tant du point de vue analytique qu'expérimental. Un banc d'étude académique est proposé afin d'étudier des assemblages sous sollicitation normale constante (statique) et sous sollicitations tangentielles liées aux vibrations de la structure (dynamique). Le facteur de perte caractérisant l'amortissement de la structure est obtenu, dans un premier temps par une étude l
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49

Stricher, Alain. "Tolérancement flexible d'assemblages de grandes structures aéronautiques." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2013. http://tel.archives-ouvertes.fr/tel-00824579.

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Comme son nom l'indique, le tolérancement flexible a pour objectif de tenir compte de la souplesse des pièces dans un processus de tolérancement. Il permet d'évaluer les défauts géométriques admissibles par des critères aussi bien géométriques que mécaniques. Ces travaux abordent en premier lieu l'élaboration de modèles adéquats permettant de prédire le comportement mécanique d'un assemblage de grandes pièces relativement souples lorsqu'elles sont sujettes à des défauts géométriques issues du procédé de fabrication. Une méthode a alors été proposée pour y implémenter des variations géométrique
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50

Summers, Mark James. "Polymerization of nano-structured surfactant assemblies." Thesis, University of Bristol, 2002. http://hdl.handle.net/1983/e4abbe4b-807c-462f-acdf-dceb786d55d7.

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