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Dissertations / Theses on the topic 'Types deformation'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Gray, Erin M. "Deformation of Earth’s upper mantle: insights from naturally occurring fabric types." Thesis, Curtin University, 2013. http://hdl.handle.net/20.500.11937/1841.

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Flow of the Earth’s upper mantle is controlled by the rheology of olivine, therefore comprehending the factors affecting olivine fabric development is critical for understanding global tectonic processes. Microstructural, FTIR and isotope analysis of olivine in Higashi-akaishi and Lihir peridotites provides insight into the relationship between olivine deformation, geochemistry and water. These results have fundamental implications for interpreting seismic anisotropy and are applicable to a wide range of tectonic environments to better constrain mantle deformation.

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2

Курочкіна, Вікторія Семенівна, Виктория Семеновна Курочкина, Viktoriia Semenivna Kurochkina, and K. V. Levchenko. "Determination of bearing capacity of wooden elements under different types of deformation." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/13464.

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3

Iyer, Sukanya Raj. "Deformation heterogeneity radiomics to predict molecular sub-types and overall survival in pediatric Medulloblastoma." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1588601774292049.

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4

Tarama, Mitsusuke. "Dynamics of active deformable particle - Two types of active spinning motions and dynamics in external flow field -." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199091.

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5

Ozcelik, Hayriye. "Interaction Between Micro And Nano Patterned Polymeric Surfaces And Different Cell Types." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614798/index.pdf.

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ABSTRACT INTERACTION BETWEEN MICRO AND NANO PATTERNED POLYMERIC SURFACES AND DIFFERENT CELL TYPES &Ouml<br>z&ccedil<br>elik, Hayriye Ph.D., Department of Biology Supervisor: Prof. Dr. Vasif Hasirci Co-Supervisor: Dr. Celestino Padeste August 2012, 139 pages Micro and nanopatterned surfaces are powerful experimental platforms for investigating the mechanisms of cell adhesion, cell orientation, differentiation and they enable significant contributions to the fields of basic cell and stem cell biology, and tissue engineering. In this study, interaction between micro and nanopatterned polymeric

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6

Лісовенко, Дмитро Володимирович, Дмитрий Владимирович Лисовенко, Dmytro Volodymyrovych Lisovenko та А. В. Лисовенко. "Подтверждение гипотез Якова Бернулли и принцип Сен-Венана на моделях видов деформации". Thesis, Сумский государственный университет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/40608.

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7

Tunón, Åsa. "Preparation of Tablets from Reservoir Pellets with an Emphasis on the Compression Behaviour and Drug Release." Doctoral thesis, Uppsala University, Department of Pharmacy, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3411.

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<p>The preparation of multiple unit tablets was investigated in this thesis with the intention of gaining a deeper understanding of some of the factors that influence the properties of such tablets.</p><p>Initially, three different types of pellets (drug, soft and disintegrant pellets) were combined as a model to investigate the ability of the mixture to form disintegrating tablets. The proportions of the different pellets and the type of disintegrant used were factors that independently influenced the tablet properties. Furthermore, the properties of tablets containing drug pellets barrier-co

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8

Brown, Louise Jayne. "Cumulative deformation of synthetic Type Ib and type IIb diamond." Thesis, University of Hull, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402498.

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9

Baron, Kevin David. "Deformations of equations of hydrodynamic type." Thesis, University of Glasgow, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433264.

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10

Barnhoorn, Auke. "Rheological and microstructural evolution of carbonate rocks during large strain torsion experiments /." [Zurich] : [s.n.], 2003. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=15309.

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11

Talbott, Shannon Nicole. "Universal deformation rings of modules for algebras of dihedral type of polynomial growth." Diss., University of Iowa, 2012. https://ir.uiowa.edu/etd/3390.

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Deformation theory studies the behavior of mathematical objects, such as representations or modules, under small perturbations. This theory is useful in both pure and applied mathematics and has been used in the proof of many long-standing problems. In particular, in number theory Wiles and Taylor used universal deformation rings of Galois representations in the proof of Fermat's Last Theorem. The main motivation for determining universal deformation rings of modules for finite dimensional algebras is that deep results from representation theory can be used to arrive at a better understanding

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12

Monecke, Katrin. "Earthquake-induced deformation structures in lake deposits : a Late Paleocene to Holocene paleoseismic record for Central Switzerland /." Zürich : ETH, 2004. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=15569.

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13

Exner, Ulrike. "Analogue modelling of flanking structures /." [Zurich] : [s.n.], 2005. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16061.

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14

Savoldi, Andrea. "On Poisson structures of hydrodynamic type and their deformations." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/20769.

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Systems of quasilinear partial differential equations of the first order, known as hydrodynamic type systems, are one of the most important classes of nonlinear partial differential equations in the modern theory of integrable systems. They naturally arise in continuum mechanics and in a wide range of applications, both in pure and applied mathematics. Deep connections between the mathematical theory of hydrodynamic type systems with differential geometry, firstly revealed by Riemann in the nineteenth century, have been thoroughly investigated in the eighties by Dubrovin and Novikov. They intr

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15

Petford, Nicholas. "The relation between deformation, granite source type and crustal growth : Peru." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316605.

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16

Vernooij, Martine G. C. Vernooij Martine G. C. "Dynamic recrystallisation and microfabric development in single crystals of quartz during experimental deformation /." Zürich : [s.n.], 2005. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16050.

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17

Anselmsson, Matts Ola. "Inverkan av hjullast och ringtryck på tryck och deformation i jordprofilen, främst i matjorden /." Uppsala : Department of Soil Sciences, Swedish University of Agricultural Sciences, 2003. http://www.mv.slu.se/jb/Publikationer/exjobb/Ex-jobbMattsOla.pdf.

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18

Herren, Eveline. "Structures, deformation and metamorphism of the Zanskar area (Ladakh, NW Himalaya) /." [S.l.] : [s.n.], 1987. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=8419.

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19

Nwotchouang, Blaise Simplice Talla. "SKULL-BASED MORPHOMETRICS AND BRAIN TISSUE DEFORMATION CHARACTERIZATION OF CHIARI MALFORMATION TYPE I." University of Akron / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron1595877233083287.

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20

Winker, Alexander Steffen. "Studien über endliche elastisch-plastische Deformationen /." [S.l.] : [s.n.], 1994. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10400.

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21

Hollenstein, Christine. "GPS deformation field and geodynamic implications for the Hellenic plate boundary region /." Zürich : ETH, 2006. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16593.

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22

Diyashev, Ildar. "Problems of fluid flow in a deformable reservoir." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3330.

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This research is focused on development and enhancement of the model of fluid flow in a formation with stress-dependent permeability. Several typical axi-symmetrical problems of fluid flow in a multi-layered reservoir with account for wellbore storage and skin have been solved numerically. The permeability was assumed to be a function of the vertical deformation of the reservoir. This deformation is the result of changing stress-strain state in the elastic system, comprised of the reservoir itself and the surrounding rock mass. The change in the stress-strain state of the system is induced by

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23

Hurle, Benedikt. "Deformation and Quantization of color Lie bialgebras and alpha-type cohomologies for Hom-algebras." Thesis, Mulhouse, 2018. http://www.theses.fr/2018MULH1819/document.

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La première partie de la thèse traite des déformations et quantification de bialgèbres de Lie. L'existence d'une quantification pour chaque bialgèbre de Lie a été démontrée par Etingof et Kazhdan. Dans ce travail, on s'intéresse au cas des bialgèbres de Lie colorée, c'est à dire une structure de bialgèbres de Lie sur un espace gradué par un groupe quelconque et un bicaractère. A cet effet, on adapte la preuve de Etingof et Kazhdan et on introduit une généralisation au cas coloré du grand crochet introduit par Lecomte et Roger. Par ailleurs nous définissons une cohomologie pour les algèbres et

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24

Engeli, Markus Peter Roderick. "Traces in deformation quantization and a Riemann-Roch-Hirzebruch formula for differential operators /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17729.

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25

Leitner, Frederick Carl. "Deformation Theory of Non-Commutative Formal Groups in Positive Characteristic." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1234%5F1%5Fm.pdf&type=application/pdf.

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26

Klaper, Eva-Maria Klaper Eva Maria. "Deformation history and metamorphic mineral growth along the Pennine frontal thrust (Wallis, Ticino), Switzerland /." Zürich : Geologischen Institut der Eidg. Technischen Hochschule und der Universität Zürich, 1985. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=7782.

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27

Kara, Amel. "ETUDE DE LA PLASTICITE ET DE LA PHOTOPLASTICITE DE ZnS TYPE BLENDE ENTRE 300 ET 620 K." Toulouse, INSA, 1989. http://www.theses.fr/1989ISAT0016.

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Nous avons etudie entre 300 et 620 k la plasticite de zns type blende a la fois dans le noir et sous illumination avec une longueur d'onde voisine de la limite d'absorption intrinseque (l'effet photoplastique: e. P. P. ). Nous avons montre que la deformation de ce compose a#i#ib#v#i est gouvernee jusqu'a 400 k par un mecanisme de peierls. Les parametres thermodynamiques de la deformation (energie d'activation des dislocations et volume d'activation) ont ete mesures dans le noir et sous illumination par des experiences de relaxation de contrainte et de sauts de vitesse. Ces mesures montrent que

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28

Stoilov, Nikola. "Hamiltonian systems of hydrodynamic type in 2 + 1 dimensions and their dispersive deformations." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/10183.

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Hamiltonian systems of hydrodynamic type occur in a wide range of applications including fluid dynamics, the Whitham averaging procedure and the theory of Frobenius manifolds. In 1 + 1 dimensions, the requirement of the integrability of such systems by the generalised hodograph transform implies that integrable Hamiltonians depend on a certain number of arbitrary functions of two variables. On the contrary, in 2 + 1 dimensions the requirement of the integrability by the method of hydrodynamic reductions, which is a natural analogue of the generalised hodograph transform in higher dimensions, l

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29

Hu, Jianan. "A theoretical study of creep deformation mechanisms of Type 316H stainless steel at elevated temperatures." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:d956b7ff-9748-408e-a68f-31d4c1d492b5.

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The currently operating Generation II Advanced Gas-Cooled Reactors (AGR) in the nuclear power stations in the UK, mainly built in the 1960s and 1970s, are approaching their designed life. Besides the development of the new generation of reactors, the government is also seeking to extend the life of some AGRs. Creep and failure properties of Type 316H austenitic stainless steels used in some components of AGR at elevated temperature are under investigation in EDF Energy Ltd. However, the current empirical creep models used and examined in EDF Energy have deficiency and demonstrate poor agreemen

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30

Biggs, Taryn. "The influence of nitrogen on the deformation behaviour of a modified AISI type 200 series alloy." Master's thesis, University of Cape Town, 1993. http://hdl.handle.net/11427/21610.

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This thesis investigates the influence of nitrogen concentration on the deformation behaviour of a modified AISI 200 type alloy. The Fe-18Cr-4Ni-7Mn base alloys contained a range of nitrogen contents from 0 to 0.27 wt%. The tensile behaviour was characterised by uniaxial tensile testing. The room temperature yield strength was shown to decrease with increasing nitrogen content for nitrogen contents less than 0.1 wt%. This decrease was attributed to the presence of secondary phases in the annealed state. An increase in yield strength was observed with further additions of nitrogen and this is p

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31

Jawed, Syed Faraz. "Design, microstructure and properties of metastable beta-type biomedical titanium alloys." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2020. https://ro.ecu.edu.au/theses/2380.

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Many existing implant biomaterials including cobalt-chromium alloy, stainless steel, Ti-6Al-4V and commercially pure titanium have all been shown to demonstrate mechanical incompatibility, poor osseointegration and/or cause cytotoxic effects on the human body after some years of application, leading to revision surgery in most cases. Consequently, there is an immediate need for an enduring biomaterial that displays good mechanical properties and possesses biocompatibility and corrosion resistance, in order to reduce rates of revision surgeries. In this PhD work, based on the 𝐵𝑜̅̅̅̅-𝑀𝑑̅̅̅̅̅, 𝑒/

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32

Kaufmann, Walter Hans Jakob. "Strength and deformations of structural concrete subjected to in-plane shear and normal forces /." Zurich, 1998. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=12711.

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33

Gong, Peng. "The precipitation behaviour and the formation of deformation induced ferrite during a new type of thermomechanical processing." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/12677/.

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A new type of thermomechanical processing with rough rolling below the recrystallisation-stop temperature (T5%), followed by a rapid reheat to 1200 °C for 10 s, and then finish rolling at the same temperature as the rough rolling, was investigated to better understand the kinetics of strain-induced precipitates (SIP). In addition, the deformation-induced ferrite transformation (DIFT) during the finishing passes was investigated as an efficient method to achieve the ultrafine ferrite grains. For comparative purposes, two experimental 0.06 wt% C steels were studied; one with 0.03 wt% Nb (Nb stee

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34

Rabadia, Chirag Dhirajlal. "Microstructure and mechanical behavior of metastable beta type titanium alloys." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2020. https://ro.ecu.edu.au/theses/2278.

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Current biomaterials such as stainless steel, Co-Cr alloys, commercially pure titanium and Ti-6Al- 4V either possess poor mechanical compatibility and/or produce toxic effects in the human body after several years of usage. Consequently, there is an enormous demand for long-lasting biomaterials which provide a better combination of mechanical, corrosion and biological properties. In addition to this, alloys used in high-strength applications possess either high-strength or large plasticity. However, a high-strength alloy should possess a better blend of both strength and plasticity when used i

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35

Straub, Christian Straub Christian Straub Christian. "Recent crustal deformation and strain accumulation in the Marmara Sea region, N. W. Anatolia, inferred from GPS measurements /." Zurich, 1996. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=11614.

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36

Pieri, Marco. "Shear deformation of calcite rocks : rheology and microfabric evolution of Carrara marble under dynamic recrystallization during torsion experiments /." Zürich : ETH, 1999. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13220.

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37

Rubio, Roberto. "Generalized geometry of type Bn." Thesis, University of Oxford, 2014. https://ora.ox.ac.uk/objects/uuid:e0e48bb4-ea5c-4686-8b91-fcec432eb89a.

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Generalized geometry of type B<sub>n</sub> is the study of geometric structures in T+T<sup>&ast;</sup>+1, the sum of the tangent and cotangent bundles of a manifold and a trivial rank 1 bundle. The symmetries of this theory include, apart from B-fields, the novel A-fields. The relation between B<sub>n</sub>-geometry and usual generalized geometry is stated via generalized reduction. We show that it is possible to twist T+T<sup>&ast;</sup>+1 by choosing a closed 2-form F and a 3-form H such that dH+F<sup>2</sup>=0. This motivates the definition of an odd exact Courant algebroid. When twisting,

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38

Whitt, Harrison Collin. "Creep and Creep-fatigue Deformation Studies in 22V and P91 Creep-strength EnhancedFerritic Steels." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555603135480185.

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39

Ma, Hongyi. "Microstructure evolution and deformation mechanics of laser powder bed fusion produced β-type titanium alloys under different loading conditions". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2024. https://ro.ecu.edu.au/theses/2813.

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As the challenges associated with an aging population escalate, older people increasingly suffer from conditions such as arthritis and joint pain. Therefore, there has been a significant rise in demand for medical implants to address the issue of replacing dysfunctional hard tissues. Titanium (Ti) alloys have garnered increasing attention for medical applications, owing to their high strength-to-weight ratio, superior fatigue performance, and excellent corrosion resistance. Among different types of Ti alloys, β-type Ti alloys exhibit excellent biocompatibility due to their relatively low elast

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40

NAKANO, MASAKI, AKIRA ASAOKA, and TOSHIHIRO NODA. "SOIL-WATER COUPLED FINITE DEFORMATION ANALYSIS BASED ON A RATE-TYPE EQUATION OF MOTION INCORPORATING THE SYS CAM-CLAY MODEL." 地盤工学会, 2008. http://hdl.handle.net/2237/20062.

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41

SILVEIRA, HELVECIO C. K. da. "Analise de integridade estrutural de tubos de geradores de vapor deteriorados por corrosao sob tensao pelo primario na regiao de transicao de expansao junto ao espelho." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11035.

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Made available in DSpace on 2014-10-09T12:47:15Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:08:43Z (GMT). No. of bitstreams: 1 07971.pdf: 6425112 bytes, checksum: 2adaba2434371c9ca93a67fa4d783fb9 (MD5)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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42

Sjödin, Johan. "Steel-to-timber dowel joints : Influence of moisture induced stresses." Licentiate thesis, Växjö University, School of Technology and Design, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-1286.

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<p>Joints are critical parts of timber structures, transmitting static and dynamic forces between structural members. The ultimate behavior of a loaded building depends strongly on the structural configuration and the capacity of the joints. The collapse of a whole building or less extensive accidents that may occur is usually starting as a local failure inside or in the vicinity of a joint. Such serious failures have recently occurred in our Nordic countries. Especially the collapse of two large glued laminated timber structures clearly indicates the need of an improved joint design. The tren

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43

Lipscomb, Celena Andrea. "Modeling of Fracture Toughness of Magnesium Alloy WE43 Before and After Friction Stir Processing." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc955106/.

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Magnesium alloys are a popular research topic for structural applications because they have a lower density than conventional structural materials, including steel, titanium, and aluminum; however, the reliability and safety of their mechanical properties must be further proven. An important mechanical property for this purpose is fracture toughness, which is the measure of the material's resistance to crack propagation. In this study, a model of an experiment to investigate the fracture toughness of a magnesium alloy WE43 before and after friction stir processing (FSP) is developed, and the r

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44

Shampa. "Hydro-morphological Study of Braided River with Permeable Bank Protection Structure." Kyoto University, 2019. http://hdl.handle.net/2433/242463.

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Atai, Farrokh. "A kernel function approach to exact solutions of Calogero-Moser-Sutherland type models." Doctoral thesis, KTH, Teoretisk fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-193322.

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This Doctoral thesis gives an introduction to the concept of kernel functionsand their signicance in the theory of special functions. Of particularinterest is the use of kernel function methods for constructing exact solutionsof Schrodinger type equations, in one spatial dimension, with interactions governedby elliptic functions. The method is applicable to a large class of exactlysolvable systems of Calogero-Moser-Sutherland type, as well as integrable generalizationsthereof. It is known that the Schrodinger operators with ellipticpotentials have special limiting cases with exact eigenfunctio

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46

Galibert, Jean. "Transport quantique dans des semiconducteurs de type iii-v : effet shubnikov-de haas dans l'antimoniure de gallium, effet magnetophonon dans l'antimoniure d'indium." Toulouse 3, 1987. http://www.theses.fr/1987TOU30286.

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Determination des potentiels de deformation de la bande de conduction de gasb. Effets de contraintes selon 111 , en bon accord avec des resultats anterieurs, et selon 100, en desaccord avec la theorie. Determination du facteur de lande de gasb a partir des oscillations shubnikov-de haas dans la bande l, resolues en spin. Interpretation. Etude des surstructures qui apparaissent sur les spectres de resonance magnetophonon de insb. La definition des pics a permis de lever des ambiguites

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47

Corre, Benjamin. "La bordure nord de la plaque ibérique à l'Albo-Cénomanien : architecture d'une marge passive de type ductile (Chaînons Béarnais, Pyrénées Occidentales)." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S083/document.

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Le manteau lithosphérique subcontinental est exhumé au pied des marges passives distales non-volcaniques en réponse à l’amincissement extrême de la croûte continentale. Ce processus d’amincissement peut être étudié à pied sec sur les témoins de la paléo-marge passive nord Ibérique affleurant aujourd’hui au nord de la chaîne des Pyrénées dans les Chaînons Béarnais (Zone Nord-Pyrénéenne : ZNP). La ZNP résulte de l’inversion de bassins ouverts entre les plaques Ibérique et Europe pendant l’Albo-Cénomanien. Dans les Chaînons Béarnais, la couverture mésozoïque pré-rift est intimement associée aux r

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48

Benoît, Lionel. "Positionnement GPS précis et en temps-réel dans le contexte de réseaux de capteurs sans fil type Geocube : application à des objets géophysiques de taille kilométrique." Thesis, Paris, Ecole normale supérieure, 2014. http://www.theses.fr/2014ENSU0014/document.

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Les réseaux de capteurs permettent une surveillance multi-paramètres de zones d'étendue limitée grâce à la coopération d'un ensemble de récepteurs déployés in-situ qui gèrent l'acquisition, le traitement et le transfert de données. Afin de coupler le concept de réseaux de capteurs et un positionnement précis des récepteurs à l'aide de puces GPS mono-fréquence, l'Institut National de l'Information Géographique et Forestière (IGN) a mis au point le Geocube.La première partie de ce travail a été consacrée au développement d'une stratégie d'acquisition, de transfert et de traitement des données GP

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Amini, Khoiy Keyvan. "Biomechanical Characterization and Simulation of the Tricuspid Valve." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1542651986497595.

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50

Lamire, Mohammed. "Adaptation de groupements tetraedriques xo4 aux edifices octaedriques : etude structurale des deformations de la charpente et des possibilites d'insertion cationique." Caen, 1987. http://www.theses.fr/1987CAEN2035.

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Abstract:

Plusieurs types structuraux ont servi de base aux investigations. Dans chaque cas, un compose nouveau a ete synthetise et sa structure etablie par diffraction rx : pwo::(5), bronze monophosphate a tunnels pentagonaux; na::(x)p::(4)w::(14)o::(50), bronze monophosphate a tunnels hexagonaux; ba::(2)p::(8)w::(32)o::(112), bronze diphosphate a tunnels hexagonaux; rb::(x)p::(8)w::(8)o::(40), bronze diphosphate a tunnels octagonaux et deux formes de mo::(4)p::(6)si::(2)o::(25), silicophosphate. La description des coordinences, les calculs de potentiels de sites et l'ecoulement de ces proprietes au se

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