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Iskef, Alaa Eddin. "Technologies informatiques pour l'étude du comportement expérimental et numérique d'un assemblage poutre-poteau en béton armé." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLN015/document.
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L'analyse du comportement des assemblages poteau-poutre en béton armé ainsi que leur influence sur la résistance de l'ensemble de la structure sous chargement cyclique ou sismique a fait l'objet de plusieurs investigations ces dernières années. Toutefois, le comportement de cette partie de structure reste loin d'être maitrisé à cause de la complexité de cet assemblage qui fait intervenir plusieurs phénomènes physiques, et à cause du manque de données expérimentales. Ce travail a pour but de mettre en place et fournir une base de données expérimentales fiable et dense dont la vocation est de donner accès à un benchmark expérimental pour permettre la modélisation et la validation du comportement de ces assemblagesThe behavior of reinforced concrete beam-column joints and their influence on the strength of the structures under cyclic or seismic loadings has been the subject of several investigations in recent years. However, the behavior of that part of the structure remains far from being mastered due to the complexity of the assembly involving several physical phenomena and due to the lack of exhaustive experimental data. This work aims to implement and provide a reliable and dense experimental database whose vocation is to provide access to an experimental benchmark to enable the modeling and validation of the behavior of these assemblies
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Loho, Ghandi. "Comportement statique et sismique d'assemblages poutre-poteau en acier et mixtes acier-béton boulonnés par platine d'extrémité." Rennes, INSA, 2008. http://www.theses.fr/2008ISAR0014.
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DINGA, ODILON NAZAIRE. "Etude du comportement des assemblages poutre-poteau en acier et mixtes acier-beton boulonnes par platine d'extremite." Rennes, INSA, 1998. http://www.theses.fr/1998ISAR0011.
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Le travail presente dans ce memoire concerne les assemblages cruciformes poutre-poteau boulonnes par platine d'extremite non debordante ; il comprend principalement trois parties : la premiere partie a caractere experimental a ete consacree a la presentation des resultats experimentaux d'une serie d'essais d'assemblages cruciformes poutre-poteau boulonnes par platine et charges symetriquement, realises au laboratoire de structures et mecanique appliquee de l'insa de rennes. Les resultats obtenus ont permis d'analyser la contribution de chaque composant a la rotation globale des assemblages. Le developpement d'un modele permettant de simuler le comportement moment-rotation de l'assemblage en acier et de l'assemblage mixte acier-beton sous chargement symetrique constitue la deuxieme partie. Dans sa formulation, le modele conserve un ressort au niveau de chaque composant ; de la sorte, des lois de comportement non lineaires des composants ont pu etre introduites et la capacite de rotation de l'assemblage evaluee. La simulation proposee permet en outre de mettre en evidence l'evolution de la position du centre de rotation de l'assemblage en cours de chargement. Dans la troisieme partie, on a generalise le modele a d'autres configurations d'assemblage ; il s'est avere que le cisaillement du panneau d'ame du poteau agissait tres favorablement sur la capacite de rotation. On a montre egalement que la prise en compte de l'effet de rigidite apporte par le beton tendu, ou tension stiffening, sur le comportement de l'armature conduit a une estimation plus en securite de la capacite de rotation de l'assemblage mixte.
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Câmpian, Cristina Mihaela. "Contribution à l'étude du comportement et au calcul de poteau mixtes acier-béton (sous des charges transversales de variation monotone ou cyclique alternée)." Rennes, INSA, 2001. http://www.theses.fr/2001ISAR0016.
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L'étude présentée dans la thèse concerne les poteaux mixtes acier- béton où la partie métallique constituée d'un profil laminé est complètement enrobée de béton. Ce travail a été effectué à l'INSA de Rennes au Laboratoire de Mécanique des Structures et Matériaux, en France et à l'Université Technique de Cluj-Napoca, Département de Construction Métallique, en Roumanie. Les poteaux, de différents élancements, ont été soumis en tête à une charge transversale monotone croissante ou cyclique alternée d'amplitude croissante selon la procédure de la CECM, tout en conservant une force de compression constante. Sur la base des résultats d'essais effectués en chargement monotone et en chargement cyclique alterné au moyen d'un dispositif expérimental original, réalisé à l'Université de Cluj-Napoca, tout une démarche d'interprétation a pu être développée en vue d'aboutir à une caractérisation du comportement de poteaux mixtes de ce type. L'interprétation analytique des résultats des essais expérimentaux sous chargement monotone a conduit tout d'abord à un examen critique de la rigidité sécante des poteaux à un stade de service permettant de proposer une formule qui apporte une correction sensible à celle de l'EN 1994-1-1. En se basant sur le concept de rotule plastique étendue sur une certaine longueur critique, une modélisation analytique de type bilinéaire tronqué a été proposée, qui permet une évaluation par des calculs simples de la résistance ultime et de la flèche ultime associée. En comportement cyclique, une comparaison des caractéristiques globales obtenues au cours des essais cycliques avec celles obtenues au cours des essais monotones a été effectuée. L'étude de l'évolution au cours des cycles des paramètres de résistance maximale, de rigidité flexionnelle au déchargement et de degré d'énergie dissipée par rapport au cycle idéal, a été nécessaire en vue de pouvoir évaluer un facteur de comportement global q pour le dimensionnement sismique, établi ici en partant d'un concept d'énergie de dissipation cumulée. A titre d'application avec un spectre élastique classique , la valeur numérique de q a été déterminée pour deux cas de portique en pendule inversé dans des zones de faible et moyenne sismicité ; il semblerait que la présence d'articulations ordinaires en pieds de poteau et l'utilisation de poteaux trop élancés et soumis à un effort normal significatif puisse conduire à prendre des valeurs de q inférieures à 2, même dans des zones de faible sismicitéThe present study is concerning with steel-concrete composite columns of fully encased type. This work was carried out in the “Laboratoire de Mécanique des Structures et Matériaux “ of INSA Rennes Laboratory, France and at the Steel Department of Civil Engineering Faculty, of the Technical University of Cluj-Napoca, Romania. The columns, of different lengths were subjected to a variable transverse load at one end , according to the ECCS procedure, while keeping a constant value of the axial compression force. On the base of the experimental results on monotonic tests as well as on the cyclic ones, with an original experimental gauge made at the Technical University of Cluj-Napoca, an analytical interpretation could be developed for the characterization of the behavior of these types of columns. The analytical interpretation of the results of the monotonic tests leads, in the first place, to a critical examination of the flexural stiffness and ultimate resistance of the investigated columns, for the serviceability loading, allowing to make a correction to the formula given by the EN 1994-1-1. A simplified analytical modeling of bi-linear type is proposed, on the base of the concept of a plastic hinge extended on a certain critical length, allowing an evaluation with simplified computation for the ultimate resistance and of the associated displacement. A comparation between the global obtained characteristics for the cyclic behavior and for the monotonic tests was made. The study of the evolution of the maximal resistance parameters, flexural stiffness in unloading and of the degree of dissipated energy related to the ideal cycle was necessary for evaluation of the global behavior factor q, for the seismic design, established here by using a cumulated dissipation energy concept. Only for application with an classical elastic spectrum, the numerical q value was determined for two cases of inverted pendulum frame, in zones of low and medium seismicity; it seems that the presence of ordinary hinges at the bottom of the column and the use of slender columns subjected to a significant normal effort can lead to take q values lower than 2, even in low seismicity zones
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Da, silva seco Laura. "Column base plates under 3D loading." Thesis, Rennes, INSA, 2019. http://www.theses.fr/2019ISAR0009.
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Les pieds de poteaux ont une influence prépondérante sur la stabilité et la rigidité des charpentes métalliques. Cette thèse porte sur la résistance des pieds de poteaux par platine soumis à un effort normal et un moment bi-axial. Les pieds de poteaux étudiés sont composés d’une platine soudée à l’extrémité du poteau et reliée au bloc béton par 4 tiges. Dans le chapitre II, une étude bibliographique dresse un bilan des modèles permettant de calculer la résistance de ce type d’assemblage ainsi que des résultats d’essais. Le chapitre III est ensuite dédié à la description et l’analyse des résultats d’une campagne d’essais menée sur 9 assemblages soumis à un moment dans le plan, hors plan ou de la flexion bi-axiale. Une attention particulière est accordée à l'influence de l'épaisseur de la platine et de l'orientation du moment. Les résultats sont présentés et discutés afin de mieux comprendre le comportement élastique et plastique. Cette étude est complétée par des analyses par éléments finis dans le chapitre IV validées par confrontation aux résultats d’essais. Une étude paramétrique a ensuite permis d’étendre le domaine d’investigation en ajoutant un effort normal et d’autres configurations géométriques (sections en HEA, IPE, diamètres des tiges d’ancrage). Un modèle analytique, basé sur la méthode des composants de l'Eurocode 3 partie 1-8, est ensuite proposé afin de calculer la résistance des pieds de poteau en flexion uniaxiale (dans le plan et hors plan) et biaxiale. Le caractère conservatif de la méthode est démontré par comparaison aux résultats des essais et des études numériquesColumn bases have a major influence on the stability and stiffness of steel structures. This thesis focuses on the estimation of the resistance of column base plates subjected to a combination of axial force and biaxial bending moment. The investigated connections consist of a steel column welded to a base plate and fixed to the concrete block by means of four anchor bolts. In Chapter II, an extensive literature review is presented, summarizing the existing models for the estimation of the resistance of column base plates as well as the results of previous experimental test campaigns. Chapter III is dedicated to the analysis of the results of a test campaign carried out on 9 column base plates, subjected to in-plane, out-of-plane and bi-axial bending moments. Particular attention is given to the influence of the base plate thickness and orientation of the applied bending moment. Results are presented and discussed, to better understand the elastic and post-limit behaviors. These experimental results are completed with refined numerical simulations presented in Chapter IV. A parametric study is conducted to broaden this investigation, by adding a normal force and other geometrical configurations (column steel profile HEA, IPE, diameter of the anchor bolts). Next, an analytical model is proposed, based on the Component Method in Eurocode 3 Part 1-8, to calculate the resistance of column base plates under uniaxial and biaxial bending moments. The conservative nature of the model is demonstrated by comparing the model predictions against experimental and numerical results
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Duprat, Frédéric. "Fiabilité des poteaux d'ossatures en béton armé à noeuds non déplaçables." Toulouse, INSA, 1993. http://www.theses.fr/1993ISAT0029.
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Cette etude traite de la conception et de l'elaboration d'un modele de calcul permettant d'estimer la probabilite de defaillance par flambement d'un poteau en beton arme, dont les extremites peuvent etre articulees, elastiquement encastrees ou rigidement encastrees. Le modele mecanique, base sur une methode de discretisation en troncons lineaires, permet d'une part un calcul rapide et precis de la capacite portante, et d'autre part, de tenir compte des variations des caracteristiques du poteau le long de la ligne moyenne. Les differentes variables structurales et de chargement etant considerees comme aleatoires, plusieurs techniques d'estimation de la probabilite de defaillance sont comparees. Il en ressort que la technique des simulations de monte carlo est la mieux appropriee a l'analyse de la fiabilite des poteaux en beton arme. L'etude, par cette methode, de la securite offerte par les codes de calcul revele que celle-ci n'est pas homogene, mais varie en fonction de parametres comme l'elancement, le type de liaison, le coefficient de chargement, l'excentricite initiale de la charge et la distribution de la resistance du beton
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Vathanakhool, Khoollapath. "Estimation de la sécurité des poteaux en béton armé : compte tenu des variations aléatoires de leurs caractéristiques géométriques et mécaniques le long de leur ligne moyenne." Toulouse, INSA, 1987. http://www.theses.fr/1987ISAT0015.
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Pour etablir l'influence des variations le long du poteau dues au coffrage, a la position des armatures et au caracteristiques des materiaux, methode de calcul de la probabilite de ruine par simulation monte carlo, en tenant compte de la correlation entre troncons; definition statistique du troncon critique, en fonctions de parametres comme l'elancement et le pourcentage d'armatures
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Abdel, Aziz Mahmoud. "Modele numerique pour l'etude du flambement de poteaux soumis a l'incendie avec gradients de temperature." Rennes, INSA, 1987. http://www.theses.fr/1987ISAR0010.
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Pour les constructions en acier, le modele tient compte des gradients longitudinaux et transversaux de temperature, d'un empechement partiel de dilatation aux liaisons, d'un comportement visco-elasto-plastique du materiau a partir d'un niveau de temperature et de contrainte. Comparaison a donnees experimentales et etude des parametres
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Benmansour, Mohammed Bénali. "Modélisation du comportement cyclique alterné du béton armé. Application à divers essais statiques de poteaux." Phd thesis, Ecole Nationale des Ponts et Chaussées, 1997. http://tel.archives-ouvertes.fr/tel-00523013.
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Le comportement des structures sous certains types d'actions tels que les séismes nécessite une bonne connaissance du comportement des matériaux composants sous des charges cycliques. Dans cette étude, le modèle de comportement cyclique du béton est basé sur la théorie de l'endommagement, sur la mécanique des milieux continus et la thermodynamique des processus irréversibles. Ce modèle tient compte des déformations résiduelles et de la perte de raideur due à la fissuration. Dans son application, les effets biaxiaux et le fluage ne sont pas pris en considération. Le comportement des armatures est considéré élasto - plastique parfait. Une amélioration importante pour l'application du modèle a été de définir une méthode d'identification des paramètres à partir des données physiques obtenues dans les essais classiques de contrôle du béton et d'une expression analytique de la loi de comportement d'usage courant. Le modèle uniaxial est introduit dans un code numérique pour structures planes. La structure à analyser est découpée en plusieurs éléments de poutres. Chaque élément est représenté par un certain nombre de sections. La section est divisée en plusieurs fibres soumises à une sollicitation uniaxiale. Chaque fibre suit sa propre histoire conforme au modèle ci-dessus, mais sa déformation respecte la loi de planéité de la section considérée. Des essais de validation ont été réalisés sur des éprouvettes cylindriques sous charges cycliques de compression, sur des poteaux courts sous compression - traction cyclique et sur des poteaux sous flexion alternée et effort normal constant. La comparaison modèle - essais apporte des résultats encourageants pour l'analyse des structures en béton armé sous charges cycliques.
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Le, Nguyen Khuong. "Contribution à la compréhension du comportement des structures renforcées par FRP sous séismes." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0020/document.
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Dans le cadre de la mise à niveau sismique des bâtiments existants, la technique de renforcement par placage et enrobage de polymères renforcés de fibres (FRP) offre une réponse pertinente. L’objectif de cette thèse est de proposer une modélisation fiable pour la détermination de la réponse quasi-statique et dynamique d’une grande variété d’éléments de structure et d’identifier les apports possibles d’une telle modélisation à la conception. Les stratégies de modélisation s’appuient sur l’utilisation d’éléments finis massifs ou basés sur une cinématique simplifiée (coques multicouches et poutres multifibres), associés à des modèles locaux d’endommagement et de plasticité pour les matériaux en présence (béton, armatures et FRP). L’hypothèse d’adhérence parfaite, d’une part, entre les armatures et le béton, et d’autre part, entre les bandes de FRP et le béton, permet de calculer efficacement les cas des poteaux courants, des poteaux courts, des voiles longs et courts, dans les régimes quasi-statique (pushover) et dynamique. Le renforcement par placage et enrobage FRP pour des structures en béton armé, est reproduit au sein de la modélisation par un apport de matière (éléments de type barre avec les caractéristiques propres des FRP) et des modifications des paramètres de la loi de comportement du béton, justifiées par l’expérimentation et la littérature. La pertinence de l’approche est finalement démontrée en confrontant la réponse temporelle de structures à l’échelle 1, de type ossature ou de type contreventé par des voiles, aux résultats expérimentaux issus de benchmarks internationauxIn the context of the building’s protection against seismic risk, the strengthening technique by FRP (Fiber Reinforced Polymers) plating and wrapping provides a relevant solution. The objective of this thesis is to propose a reliable modeling for determining the quasi-static and dynamic responses of a wide variety of structural elements and to draw advantage in design. The modeling strategies make use of 3D elements or finite elements based on simplified kinematics (multilayer shells or multifiber beams), associated with local damage and plasticity laws for the constitutive materials (concrete, rebar and FRP). The perfect bond assumption between steel-concrete and FRP-concrete allows efficiently calculating the quasi-static and dynamic behaviors of short and slender columns, as well as short and slender walls. The mechanical contribution of FRP plating and wrapping is reproduced in the modeling by adding material (bar type elements with FRP characteristics) and by changing the parameters of the concrete model on the basis of the experience and analytical formula issued from the literature. The relevance of the approach is finally highlighted by comparing the time-history response of real braced frame or wall structures with the experimental results
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Anas, Harraq. "Étude de la stabilité de poteaux d'acier formés à froid de section octogonale." Sherbrooke : Université de Sherbrooke, 1997.
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Lepourry, Clémence. "Mise au point et caractérisation d’un système innovant de poutre hybride béton-acier : étude des comportements locaux et globaux." Thesis, Rennes, INSA, 2019. http://www.theses.fr/2019ISAR0016.
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L’objectif principal de cette thèse de doctorat est le développement et la caractérisation d’un procédé de poutres de grandes portées adapté aux entreprises de gros œuvre. En effet, les technologies industrielles existantes pour répondre à des franchissements importants ne sont pas en accords avec le savoir-faire des équipes chantiers. Dès lors, le groupe Legendre, par sa filiale Ingénova, a souhaité mettre au point une solution, simple de par sa mise en œuvre sur chantier, et qui vise un niveau d’exigence structurelle similaire aux technologies actuelles. Composée d’une poutre béton armé renforcée par une peau métallique extérieure, la poutre hybride béton-acier est la solution étudiée au sein de ce mémoire pour répondre à cette problématique. Pour assurer l’équilibre des efforts entre les deux matériaux, un système de connexion inédit a été développé. La caractérisation expérimentale n’ayant validé que deux dimensions de connecteurs, le modèle numérique a permis d’étendre l’étude et ainsi, déterminer une formule de dimensionnement généralisée. Le comportement local de la poutre connu, les investigations expérimentales se sont orientées sur la réponse de la poutre soumise à une flexion positive. L’impact de la connexion partielle en comparaison de la connexion complète a été quantifié à la fois sur la résistance de la poutre et sur ses déformations. Le modèle numérique, calibré sur les résultats des essais, a permis de valider l’utilisation de modèles analytiques issus de la littérature, adaptés au cas de la poutre hybride. Enfin le dernier volet de cette thèse concerne l’assemblage de la poutre hybride béton-acier avec un poteau mixte acier-béton tubulaire. Après une série d’essais pour caractériser la résistance et la rigidité de ce joint innovant, un modèle numérique de cette configuration a mis en évidence les transferts d’efforts nécessaires entre les deux matériaux. Ces derniers complètent le mode de fonctionnement classique de l’assemblage qui superpose à la fois un comportement béton armé et un comportement métallique. Un modèle analytique, développée au sein de cette thèse, a confirmé le dimensionnement de l’assemblage.Les résultats présentés dans ce mémoire ont été suffisants pour tester le procédé de poutre hybride béton-acier sur un chantier pilote. Le gain de la solution en comparaison aux technologies existantes a été confirmé par les équipes chantiersThe main goal of this Ph.D thesis is the development and the characterization of a solution for long-span beams in concrete buildings. Pre-stressed or composite beams are the possible technologies for beams up to twenty metres, but they are not adapted for concrete constructors. The main objective of Ingenova, the research and development affiliate of Legendre is to find a solution, which can be set up easily by concrete workers with good structural performance. The proposed solution is the concrete-steel hybrid beam, made of U-shape steel profile used as permanent formwork to encase a concrete beam. The association of the two beams also gives a convenient solution adapted to concrete builders. In this thesis, a series of experimental and numerical tests have been performed in order to assess the global and the local behaviour of the beam and its connections.Firstly, the connexion between concrete and steel is achieved by L-shaped angles welded on the upper flanges of the steel beam. Their behaviour has been studied by performing asymmetric push-out tests, which were used to validate a detailed finite element model. Based on the results obtained from a numerical parametric study of the validated a finite element model, an analytical expression of the shear resistance was then proposed.The global behaviour in sagging of the concrete-steel hybrid beam was also investigated by experimental and numerical tests. The impact of the partial interaction under deflection and bending moment resistance have been studied. The results show a ductile behaviour of the concrete-steel hybrid beam both in partial and in full interaction. Finally, an analytical method has been adapted to determine the ultimate flexural capacity of this innovative beam considering the degree of connection. The last part of this work concerns the joint between the concrete-steel hybrid beam and a concrete-filled steel tubular column. The behaviour of this hybrid joint was verified by full-scale experimental tests. A finite element model has also been developed in order to investigate more deeply into the load transferring mechanism within the joint. This FE model is validated by comparing its results against experimental data. An analytical model for the design of the joint is then proposed.This new technology has already been used in actual projects during the thesis. The design procedure of the members and of the joints has been approved by the CSTB, the French certification organism of construction. First feedback for the on-site erection were good, and workers enjoyed the quick assembly and the increase of security on site
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Ben, Ahmed Samir. "Sciascia : potere e letteratura." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ44362.pdf.
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TALAMONA, DIDIER. "Flambement de poteaux metalliques sous charge excentree, a haute temperature." Clermont-Ferrand 2, 1995. http://www.theses.fr/1995CLF21726.
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Ce travail est consacre principalement a l'elaboration de courbes d'interaction m-n de poteaux metalliques sous charge excentree, a haute temperature. Ces courbes ont ete elaborees a partir de simulations numeriques. L'elaboration de deux formules simplifiees est presentees dans le detail. La premiere formulation est inspiree (pour sa forme generale) des propositions qui ont ete faites dans l'eurocode 3 partie 1. 2, mais la plupart des coefficients ont ete largement modifies. La seconde approche est un nouveau concept puisque l'on n'applique aucun coefficient sur le moment flechissant m, mais sur l'effort axial n. Nous mettons egalement en evidence les avantages et les lacunes de chacune de ces formulations. Pour aboutir a ces deux formulations, plus de 150000 calculs ont ete realises. Mais au prealable, nous avons valide notre modele numerique en effectuant des comparaisons par rapport a d'autres codes de calculs. La realisation de huit essais de flambement de poteaux sous charge excentree et soumis a une elevation de temperature (uniforme dans le poteau) a ete necessaire afin de valider notre modele numerique par rapport au flambement de poteaux reels. Ces essais nous ont egalement permis de determiner les approximations qui peuvent etre effectuees pour l'elaboration de formules simplifiees d'interaction m-n
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FASULO, FILIPPO. "Potere e governo in Cina: l'idea di potere come fondamento del sistema politico." Doctoral thesis, Università Cattolica del Sacro Cuore, 2014. http://hdl.handle.net/10280/2466.
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L’obiettivo di questa tesi è comprendere il sistema politico cinese. Tale intendimento è perseguito attraverso la definizione di uno schema interpretativo fondato sull’idea di potere. In questa tesi si assume che l’idea di potere sia funzionale alla definizione della forma di governo e viene analizzata l’evoluzione del sistema politico cinese attraverso modifiche dell’idea di potere. Il Potere è inteso come potere di governare e l’idea di potere viene definita sulla base di sei elementi comparabili: sovranità, esercizio, legittimità, obiettivo, limite e confine. Lo schema così delineato viene poi applicato alle principali teorie politiche cinesi con l’obiettivo di individuarne continuità e discontinuità. Pertanto le domande di ricerca vertono su quale sia l’idea di potere in Cina e quale sia la sua variazione diacronica. Infine vengono analizzati i risultati dell’applicazione dello schema interpretativo per comprendere l’attuale sistema politico. L’attenzione è rivolta soprattutto agli elementi del pluralismo, della relazione fra popolo ed esercizio di governo e sullo stato. Elemento centrale è il ruolo del pluralismo valoriale in rapporto al sistema politico.The aim of this dissertation is to understand Chinese political system. This task is pursued trough the development of an interpretative schema based on the idea of power. This dissertation assumes the idea of power is functional in shaping the form of government and tries to analyze the evolution of Chinese political system via changes within the idea of power. Power is intended as power to govern and the idea of power is set trough six comparable items: sovereignty, exercise, objective, legitimacy, limit and border. This schema is then applied to China’s main political philosophy in order to trace continuities and discontinuities. Therefore Research questions are what the idea of power is and what its evolution was. Finally this dissertation analyzes outcomes from interpretative schema’s application to understand current political system. This dissertation focuses mainly on the element of pluralism, relation between the people and the exercise of the government and the state. This dissertation concentrates on the role of value pluralism in relation to the political system.
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Culica, Georges-François. "Contribution à l'étude des poteaux en béton confiné avec des toles à haute adhérence." Marne-la-vallée, ENPC, 1996. http://www.theses.fr/1996ENPC9602.
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Poteat, Angelique M. "Spring Grove for chamber orchestra." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1307322411.
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Rivera, Jésus Emilio. "Comportement en flexion-compression des poteaux en béton ordinaire renforcés avec fibres synthétiques de polypropylène/polyéthylène." Mémoire, Université de Sherbrooke, 2009. http://savoirs.usherbrooke.ca/handle/11143/1516.
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The goal of this research project is to analyze the behavior of columns made with plain concrete and synthetic polypropylene/polyethylene fiber addition. In order to supplement the current data base, an experimental study was carried out on six columns of real size and ordinary concrete resistance confined by circular stirrups and subjected to constant axial loads and cyclic flexure. Three columns were built with concrete of normal resistance with 0% of synthetic fibers and three columns were built of concrete with 1% by volume of synthetic fibers.The used concrete strength varied from 25 to 42 MPa, the resistance of longitudinal steel was 510 MPa, that of the stirrups of 468 and 510 MPa and the axial factor load around 25% Ag f'c . Today, it is possible to explore the behavior in the plastic range of the structural elements under seismic loading. Predictions of behaviour of moment vs curvature as well as predictions of force vs displacement relationship were accomplished. Indeed, the comparison between the experimental results and the prediction made for the specimens with and without fibers shows a very good agreement. In the case of the prediction of the moment vs curvature relationship, the MNPHi software developed by [PAULTRE, 1996] was used and in the case of the prediction of force vs displacement relationship, software DISP96 developed by [LÉGERON, 1998] was used. Finally, the influence of tie spacement as well as addition of fibers were clearly observed.The results show that the presence of polypropylene/polyethylene fibers in the concrete matrix improves ductility, tenacity, and the capacity to dissipate energy. Also, they help to retain the cover concrete.
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SIDIBE, KARAMOKO. "Fiabilite des poteaux en beton arme soumis a un chargement thermomecanique." Toulouse, INSA, 1998. http://www.theses.fr/1998ISAT0021.
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Cette etude porte sur la conception et la realisation d'un modele de calcul pour la determination de la resistance ultime des poteaux en beton arme soumis a une elevation de temperature provoquee par un chargement d'origine climatique ou par un incendie (defini ici par la courbe standard iso 834). Le modele thermique utilise le logiciel de calcul aux elements finis cesar lcpc. Le modele mecanique est fonde sur une discretisation du poteau en macro-elements multi-fibres. Couple au modele thermique, ce modele permet un calcul rapide et precis de la resistance ultime d'un poteau expose a un chargement thermique quelconque. Cette etude presente aussi une methode d'estimation de la fiabilite des poteaux en beton arme dimensionnes pour rester stables au feu pendant un temps t#f donne. Elle est basee sur la technique des simulations de monte carlo. Elle prend non seulement en compte l'evolution des caracteristiques thermo-physiques et mecaniques des materiaux en fonction de la temperature, mais aussi celle de leurs distributions statistiques, elles memes dependantes de la temperature. Il apparait que la fiabilite des poteaux dimensionnes selon les regles fb 87 varie fortement suivant la duree t#f de stabilite au feu exigee, le pourcentage d'armatures et l'elancement. Une proposition est faite pour attenuer ces variations.
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SILVESTRI, MAURO. "POTERE PUBBLICO E AUTOTUTELA AMMINISTRATIVA." Doctoral thesis, Università Cattolica del Sacro Cuore, 2019. http://hdl.handle.net/10280/61787.
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La tesi ha per oggetto l’autotutela amministrativa, specialmente quella c.d. decisoria “spontanea”, ovvero quell’insieme di poteri che consentono all’amministrazione di riesaminare i propri provvedimenti e di rimuoverli a vario titolo.
Di questi poteri si è indagato il fondamento dogmatico e positivo.
La questione del fondamento è stata per lunghi anni affrontata dalla dottrina e dalla giurisprudenza in termini totalmente pre-critici e non problematici: l’esistenza di questi poteri era semplicemente scontata e le riflessioni sulla loro base giuridica si esaurivano perlopiù nella constatazione della loro necessità nell’immemore consenso circa la loro ammissibilità.
Negli ultimi anni, invece, una parte degli Autori ha disconosciuto la natura implicita e per così dire “originaria” di questi poteri e ne ha perciò patrocinato la stretta riconduzione al principio di legalità: in altre parole, l’annullamento e la revoca non sarebbero affatto conseguenza della c.d. inesauribilità del potere amministrativo – negata da questa dottrina – e sarebbero perciò oggi ammissibili unicamente nei casi e nei modi disciplinati dalle due norme introdotte nella legge sul procedimento nel 2005. Ciò a garanzia della certezza dei rapporti giuridici e del legittimo affidamento dei destinatari dei provvedimenti ampliativi.
Secondo un filone ricostruttivo in pare contrastante con il primo, altri Autori hanno inteso valorizzare gli elementi de iure condito a favore della obbligatorietà dell’avvio del procedimento di riesame, auspicandone contemporaneamente la generalizzazione, nell’ottica di una più complessiva trasformazione dell’annullamento d’ufficio in un nuovo istituto ibrido, rispondente alla funzione di alternative dispute risolution system o, se si vuole, di ricorso gerarchico. Per le stesse ragioni, l’istituto dovrebbe perdere il carattere ampiamente discrezionale, in favore di una vincolatezza totale o parziale. Questo secondo “fronte di attacco” alla ricostruzione tradizionale intende offrire soluzione al venir meno del sistema dei controlli di legalità sull’azione amministrativa.
Lo studio ha sottoposto a verifica entrambi i filoni evolutivi richiamati, discostandosi dal secondo e, pur accogliendo parte delle argomentazioni ad esso sottostanti, anche dal primo.
Quanto alla teoria dell’esauribilità del potere amministrativo, oggetto della prima linea evolutiva, si è ritenuto di condividere le considerazioni circa la tutela dell’affidamento degli interessati e della stabilità dei rapporti giuridici. È parsa tuttavia meglio rispondente alle categorie generali e alle esigenze del sistema (anche sulla base di una visione del diritto amministrativo quale “diritto dei terzi”, per natura volto alla tutela dell’interesse generale e non solo dell’interesse privato particolare coinvolto dall’esercizio del potere) la conservazione della tradizionale inesauribilità del potere, seppur assai mitigata, nella pratica, con riferimento all’esercizio dei poteri di ritiro degli atti favorevoli ai privati il cui affidamento sia concretamente meritevole di tutela.
La natura discrezionale dell’annullamento d’ufficio (e della revoca), sottoposta a critica dalla seconda linea evolutiva, viene difesa sia sul piano del diritto positivo e pretorio (attraverso la riconduzione dei principali casi di annullamento c.d. doveroso al modello generale), sia sul piano delle categorie generali, a partire dalla natura dei poteri coinvolti e dall’analisi delle posizioni giuridiche dei soggetti interessati dai procedimenti di secondo grado.The thesis focuses on the Italian system of so called autoprotection or selfprotection. This expression refers to the powers of public administration to revoke its own acts when deemed necessary to repair a vice of legitimacy or a vice of opportunity, without being bind to resort to the courts. Given the aim of this powers – the same of first grade powers plus a semi-judicial one – they are usually meant by judges and scholars as “widely discretionary”. Furthermore, it has always been believed that the choice to activate the correspondent proceeding is totally free for public administration; consequently, a demand of interested parties does not make binding the start of the procedure, opposite to what happens with administrative appeal proceedings. In recent years ECJ, ECHR and national case law has emboldened the limits to selfredress, making clear that legitimate expectations and the public interest to legal certainty must be taken into consideration and given sufficient protection. Lately, also the Legislator followed, making the annulment and the revocation harder to be put in effect when the first act is favorable to the addressed subject. In such cases, the revocation cannot be ordered for a mere reconsideration of already known circumstances (ius poenitendi) but only if new ones show up. At the same time, ex officio annulment is precluded after 18 months from the issuing of the first act, instead of the previous general limit of a “reasonable time”. On the other hand, the case law has apparently pointed out some hypothesis of mandatory annulment, such as for “anticomunitarian acts” and cost-producing acts. Based on these two orientation, some scholars suggested a global rethinking of the self-protection, its bases and its rules. The study analyzes the case law and the latest legislative reforms, proving that no mandatory annulment exists in the Italian legal system. Therefore, nor the ECJ principle of equivalence nor other principles require that selfredress become generally obliged. The thesis also aims to prove that selfprotection remains a discretionary power, in order to ensure that the contrasting needs (the rule of law on the one hand, and the legal certainty and legitimate expectation on the other hand) can be properly balanced in every decision, according to the Constitutional provision of article 97, which requires that both impartiality and good administration are pursued.
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Hughes, G. A. "Novel, potent antagonists of capsaicin." Thesis, University College London (University of London), 2005. http://discovery.ucl.ac.uk/1445556/.
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The aim of this project was to explore and refine the conformational rationale for the activity of capsazepine (CPZ) as a blocker of the ion channel TRPV1 (transient receptor potential vanilloid type 1), by the synthesis and biological evaluation of further conformational constrained capsaicin analogues. The resolution of the stereoisomers of Af-(4-chlorophenethylthiocarbamoyl)-6,7-dihydroxy-1-methyl-1,2,3,4-tetrahydroisoquino-line 29, Af-(4-chlorophenethylthio-carbamoyl)-6,7-dihydroxy-3-methyl-1,2,3,4-tetra-hydroisoquinoline 30 and N-(4-chlorophenethylthiocarbamoyl)-6,7-dihydroxy-1,3-dimethyl-1,2,3,4-tetrahydroiso-quinoline 31 by stereoselective synthetic methodology is described, and some of the more unusual and interesting mechanisms are discussed. The novel asyrnmetric chemistry described includes the separation of the enantiomers of 2-(3,4-dimethoxyphenyl)-l-methylethylamine 38 by crystallisation with the enantiomers of mandelic acid, the use of sodium triacetoxyborohydride in the stereoselective reduction of 6,7-dimethoxy-l,3-dimethyl-3,4-dihydroiso-quinoline 171, to give the cw-diastereomers of 6,7-dimethoxy-1,3-dimethyl-1,2,3,4-tetrahydroisoquinoline 44, and the novel stereoselective route to the trans-diastereomers of 6,7-dimethoxy-l,3-dimethyl-l,2,3,4-tetrahydroisoquinoline 44 from the enantiomers of 2-(3,4-dimethoxyphenyl)-l-methylethylamine 38 by the Michael addition of A-benzyl-2-(3,4-dimethoxyphenyl)-l-methylethylamine 155 to ethynyl-4-tolylsulfone 150, followed by TFA-mediated cyclisation, single electron reductive desulfonylation and palladium-catalysed hydrogenolysis. The results of investigations into the conformational behaviour of the resolved stereoisomers of 29, 30 and 31 by techniques of NMR spectroscopy and molecular modelling, the evaluation of their biological activity at the rat and human orthologues of the ion channel TRPV1, and the attempted correlation of the two sets of data, with respect to the published conformational rationale for the activity of CPZ, are also described.
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DURAZZO, VITTORIA EMMA. "Dissociazione dei Poteri datoriali e subordinazione." Doctoral thesis, Università Cattolica del Sacro Cuore, 2009. http://hdl.handle.net/10280/651.
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Abstract della tesi di dottorato della Dott.ssa Vittoria E. Durazzo, XX Ciclo “Dissociazione dei poteri datoriali e subordinazione”
La ricerca attiene all’intersecarsi dei piani della subordinazione e dell’interposizione a partire dal divieto di cui all’art.1 l.n. 1369/1960 sino alla riforma del 2003 (con un’incursione nella ‘controriforma’ del 2007).
Prendendo le mosse dalla nota ricostruzione secondo cui le operazioni di qualificazione dell’una o dell’altra area si avvalgono degli stessi elementi sintomatici (l’una in prospettiva fisiologica, l’altra patologica) si ripercorre la tesi avversa che distingue tra art. 1 l.n. 1369/1960 che individua a chi il lavoratore debba essere considerato subordinato e art. 2094 c.c. che stabilisce se il lavoratore debba essere considerato subordinato.
Quest’impostazione, condivisibile sul piano teorico, sollecita alcune riflessioni nel mutato contesto normativo. Posta infatti l’abrogazione della legge del 1960, si tratta di verificare l’attuale declinarsi delle relazioni tra nozione di subordinazione e utilizzazione indiretta dei lavoratori. La chiave privilegiata dell’indagine è costituita dall’esercizio del potere direttivo, elemento trasversale che tocca la fattispecie ex art. 2094 c.c.; la somministrazione di lavoro; la figura dell’appalto lecito.
In una prospettiva ‘affermativa’, il I Capitolo è dedicato alle operazioni di qualificazione che si fondano sul positivo riscontro dell’esercizio del potere direttivo da parte di un soggetto. Dopo alcuni cenni al contenuto e alla portata dello stesso nel più ampio contesto dell’evoluzione dottrinale del concetto di subordinazione, la ricerca viene svolta quasi interamente sul piano giurisprudenziale in due direzioni: le più recenti pronunce sulla fattispecie ex art. 2094 c.c. che hanno dato ulteriore pregnanza discretiva all’esercizio del potere datoriale in esame; l’orientamento che nel vigore della legge del 1960 ha ancorato la liceità degli appalti a basso contenuto organizzativo a tale profilo (poi trasfuso nella definizione di cui all’art.29 d.lgs. n.276/2003).
Il capitolo successivo si snoda nella prospettiva ‘rovesciata’ della dissociazione dei poteri tipici datoriali. Occorre, in particolare, verificare la tenuta della ricostruzione della nozione di subordinazione a fronte dell’asserito sviamento del potere direttivo in capo a soggetto estraneo al rapporto di lavoro.
L’indagine tiene conto della tesi maggioritaria ancorché risalente dell’incompatibilità della deviazione delle prerogative proprie del datore di lavoro con l’art. 2094 c.c. e delle critiche che, in tempi più recenti, le sono state mosse.
Viene poi ripercorso il dibattito sorto in dottrina all’indomani della ripartizione dei poteri tra Agenzia fornitrice e utilizzatore nel contratto di lavoro temporaneo ex l.n. 196/1997. In quell’occasione accanto a chi sostenne la tenuta del sistema per il tramite del carattere speciale/eccezionale/di sottotipo della nuova figura contrattuale, vi fu chi affermò la non alterazione, sotto il profilo causale, del modello ex art. 2094 c.c., ritenendo che il Legislatore avesse riconosciuto in capo all’utilizzatore soltanto un particolare profilo del potere direttivo, quello conformativo della prestazione. Peraltro, interessanti implicazioni sul piano sistematico vennero colte da chi vide nella dissociazione ‘tipizzata’ il riscontro alla tesi dell’origine a-contrattuale del potere direttivo.
Il quadro di riferimento è mutato in seguito alla riforma del 2003 che, come noto, ha abrogato la legge del 1960 e gli artt. 1-11 l.n. 196/1997.
Nel III capitolo vengono indagate le ricadute sul sistema della novella (per certi versi limitate dal Pacchetto Welfare del 2007 che, a sua volta, ha abrogato la figura dello staff leasing). Punto nodale dell’indagine sin qui condotta concerne la verifica se la dissociazione dei poteri datoriali, ‘accettata’ secondo i percorsi interpretativi esposti, si configura ora come regola dell’ordinamento o mantiene il connotato patologico che le era proprio quando sussisteva un divieto esplicito di interposizione. Sul punto è da condividersi l’opinione maggioritaria secondo cui, nel sistema delineato dal Legislatore del 2003, si ravvisa la permanenza di un divieto generale d’interposizione. Tale tesi è stata confermata prima dalle Sezioni penali della Cassazione chiamate a pronunciarsi sull’eventuale abolitio criminis delle sanzioni penali previste dalla l.n. 1369/1960, poi dalle Sezioni Unite civili del 2006.
Di qui discende che la dissociazione è ammessa nell’ordinamento se e in quanto rispettosa dei requisiti, oggettivi e soggettivi, fissati dal d.lgs. n. 276/2003. Inoltre non sono travolte le opzioni elaborate sulla compatibilità dell’esercizio del potere direttivo da parte dell’utilizzatore nel lavoro interinale con il tipo ex art. 2094 c.c. Resta tutt’ora convincente, anche in base al tenore letterale degli articoli relativi contenuti nel d. lgs. n. 276/2003, quella secondo cui soltanto una quota del potere direttivo, quella relativa alla conformazione della prestazione e al controllo, viene imputata all’utilizzatore così non dovendosi registrare alcuna deviazione dalla fattispecie tipica. Ne consegue che non vi sono ricadute nelle operazioni di qualificazione che si erano all’inizio prospettate, restando il quadro sostanzialmente immutato.
L’ultima parte della ricerca atterrà alla eventuale incidenza della dissociazione dei potere direttivo, integralmente riconosciuto in capo ad un soggetto diverso dal datore di lavoro, sul ‘tipo’ 2094 c.c..Separation of employer's prerogatives and standard employment.
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Guo, Yongzhi. "Plasmin : a potent pro-inflammatory factor." Doctoral thesis, Umeå : Umeå University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1607.
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MECHELLI, RAJSSA. "Effetti Distributivi del Potere di Mercato." Doctoral thesis, Università Cattolica del Sacro Cuore, 2019. http://hdl.handle.net/10280/60174.
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La tesi studia l'interazione tra potere di mercato, disuguaglianza e benessere in un modello dinamico di equilibrio generale. A tal fine è necessario abbandonare due capisaldi della teoria Neoclassica: l'agente rappresentativo e la competizione perfetta. L'obiettivo del primo capitolo è capire come il potere di mercato influenza la distribuzine di ricchezza e reddito tra le famiglie. I risultati suggeriscono che una semplice estenzione del modello di Aiyagari, in particolare competizione oligopolistica con dinamica delle imprese endogena, riesce a replicare le distribuzioni osservate nei dati USA. Inoltre, un incremento del grado di concentrazione nel mercato dovuto a un aumento dei costi di entrata, implica una più bassa Labor Share e una più alta Profit Share. A loro volta queste dinamiche causano un incremento della disuguaglianza. Anche questi trend sono in linea con ciò che si può osservare dai dati USA. Il secondo capitolo estende il modello sviluppato nel primo per studiare il ruolo della tassazione dei dividendi nel redistribuire risorse. L'analisi considera due regimi alternativi. Una riduzione dell'aliquota sui dividendi, dallo Status Quo statunitense, comporta una perdita di benessere per la società. Una più bassa tassazione riduce i trasferimenti monetari alle famiglie, implicando alti costi per quelle più povere. Inoltre, una riduzione dei trasferimenti causa un incremento dei risparmi. Per poter risparmiare di più gli agenti meno abbienti devono sacrificare consumo. Dato che la ricchezza è molto concentrata, la maggior parte della popolazione soffre una perdita di benessere.This work studies the interactions between market power, inequality, and welfare in a dynamic, general equilibrium framework. Doing so requires departing from two building blocks of the neoclassical general equilibrium model: the representative agent paradigm and perfect competition. The aim of the first chapter is to understand whether market power affects the distributions of wealth and income among households. Results suggest that a relatively simple extension of the Aiyagari model, namely oligopolistic competition with endogenous firms’ dynamics, is successful at reproducing the wealth and income distributions observed in the U.S. Additionally, an increase in concentration in the markets for final goods, due to an increase in entry costs, leads to a lower labor share and a higher profit share of income. These dynamics, in turn, imply higher income inequality. Importantly, these trends are broadly in line with those observed in the U.S. in the last thirty years. The second chapter extends the framework developed in chapter one to study the role of the dividend income tax as a redistributive tool. The analysis considers alternative redistribution regimes. The main finding is that a reduction of the dividend income tax rate, from the US Status Quo, is associated with a social welfare loss. A lower dividend income tax rate implies lower transfers to households. From a welfare point of view, this is particularly costly for poor households. Furthermore, a reduction in transfers forces households to save more for precautionary reasons. To do so, wealth poor households must sacrifice consumption. Given the high concentration of wealth, this implies that the majority of the population suffers a welfare loss.
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Camporesi, Federico <1980>. "L'evoluzione dei poteri del Parlamento Europeo." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/2193/.
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Harraq, Anas. "Étude de la stabilité de poteaux d'acier formés à froid de section octogonale." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ35717.pdf.
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SADEGHI, KABIR. "Simulation numerique du comportement de poteaux en beton arme sous cisaillement devie alterne." Nantes, 1995. http://www.theses.fr/1995NANT2019.
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Le but de ce travail est la simulation numerique du comportement d'un poteau en beton arme en flexion composee alternee deviee jusqu'a rupture d'une part, et d'autre part l'evaluation de la degradation structurelle a partir d'un indicateur de dommage. Nous presentons la methode de simulation du comportement d'un poteau en beton arme sous chargement compose devie et cyclique pour des sections quelconques. La methode convient aux chargements cycliques comme l'excitation sismique ou l'impact du aux chocs des navires contre les infrastructures portuaires. L'equilibre de base est justifie sur une section critique fictive qui suit la loi de navier avec une courbure moyenne. La methode utilisee, qualifiee de methode de controle du plan des deformations, consiste a resoudre un systeme d'equations quasi-statiques par iteration triple sur les deformations en utilisant les lois cycliques non lineaires de comportement des materiaux retenues par le beton et l'acier. Le logiciel elabore dans ce cadre prend egalement en compte l'effet du confinement des armatures transversales et simule la perte d'enrobage. Il permet de rendre compte localement et jusqu'a rupture du comportement interne de la section critique (deformations, contraintes, axe neutre,) et du comportement externe du poteau (deplacement en tete). Les resultats obtenus sont confrontes a ceux de travaux effectues par d'autres chercheurs. Nous proposons egalement un indicateur de dommage dont le calcul est base sur une analyse energetique et dont le but est d'evaluer la degradation structurelle causee sur les elements en beton arme soumis aux chargements monotones, cycliques, voire de type sismique. L'application de cette methode donne une distribution reguliere bien adaptee aux differentes phases de l'endommagement et peut constituer pour le praticien un critere de decision pour la reparation ou la destruction d'un element
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Anas, Harraq. "Étude de la stabilité de poteaux d'acier formés à froid de section octogonale." Mémoire, Université de Sherbrooke, 1997. http://savoirs.usherbrooke.ca/handle/11143/1027.
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Les pylônes sont des supports métalliques réservés surtout aux lignes de transport, alors que les poteaux en bois ou en béton servent plutôt aux lignes de distribution. En raison de la diminution des réserves de bois d'¶uvre, les constructeurs canadiens songent sérieusement à remplacer les poteaux de bois par des poteaux d'acier. Des marches pour l'exportation de poteaux et pylônes en acier existent déjà.Les poteaux en acier de section polygonale sont aussi considérés comme des éléments structuraux prometteurs pour les tours d'éclairage, les tours de transmission, les piles pour les autoroutes, les haubans des pylônes des ponts, du point de vue aérodynamique et esthétique. L'objectif de ce projet est d'étudier la stabilité de poteaux en acier à parois minces formes à froid. Pour ce faire, on a opté pour des poteaux d'acier de forme octogonale. Deux types de poteaux seront considérés pour cette étude à savoir, un octogone régulier et un autre irrégulier, chacune de ces structures présentera deux types d'assemblage longitudinal : un assemblage avec une soudure et un autre avec deux soudures, ce dernier permettra un transport aisé des structures en imbriquant les deux parties du poteau. Le rapport comporte essentiellement trois volets : une étude bibliographique des travaux antérieurs entrepris dans le même contexte, un calcul par le biais du logiciel d'éléments finis COSMOS/M et une série de tests en laboratoire sur huit poteaux d'acier à parois minces formes à froid de forme octogonale.
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Eugene, Nicole Christina. "POTENT SLEEP: THE CULTURAL POLITICS OF SLEEP." Connect to this title online, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1151208257.
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Cai, Bing. "Ceramic Materials for Administration of Potent Drugs." Doctoral thesis, Uppsala universitet, Tillämpad materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-245031.
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This thesis aimed to investigate and document the potential of applying ceramics in two specific drug delivery applications: tamper-resistant opioid formulations and transdermal enhancement protrusions. Geopolymers were developed into the matrix for a tamper-resistant formulation, aiming to protect drug substances from non-medical abuse. The synthesis conditions and excipients composition of the geopolymer-based formulation were modified in this work to facilitate a stable and extended drug delivery. Results showed that 37ºC 100% humidity for 48 hours were applicable conditions to obtain geopolymer with suitable mechanical strength and porosity. Moreover, it was found that the integration of poly(methyl acrylate) into the geopolymer-based formulation could reduce the drug release at low pH and, meanwhile, maintain the mechanical strength. Therefore, the geopolymer-based drug formulations concluded from these studies were applied in oral and transdermal delivery systems. Evidence of the tamper-resistance of geopolymer-based oral and transdermal formulations was documented and compared to the corresponding commercial opioid formulations. The results provided experimental support for the positive effects of geopolymers as drug carriers for the tamper-resistance of oral and transdermal delivery systems. Self-setting bioceramics, calcium phosphate and calcium sulfate were fabricated into transdermal enhancement protrusions in this work for the first time. Results showed that, under mild conditions, both bioceramics could form pyramid-shaped needles in the micron size. The drug release from these needles could be controlled by the bulk surface area, porosity and degradation of the bioceramics. An in vitro insertion test showed that the bioceramic microneedles had enough mechanical strength to insert into skin. Further optimization on the geometry of needles and the substrate material was also performed. The higher aspect-ratio needles with a flexible and self-swellable substrate could release most of the drug content within 4 hours and could penetrate through the stratum corneum by manual insertion. This study explored the potential application of bioceramics in transdermal enhancement protrusions and showed promising indication of their future developments.
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Stefanelli, Silvia <1983>. "Il potere normativo delle Corti sul processo." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/6010/.
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La tesi intende offrire una riflessione in merito al potere degli organi giurisdizionali di disporre normativamente su determinati aspetti del processo che si svolge dinanzi ad essi, sostituendosi così al legislatore.
Il piano di indagine della tesi si sviluppa prevalentemente nella descrizione della realtà europea davanti alle autorità giurisdizionali di Lussemburgo, attraverso continui riferimenti a pronunce giurisprudenziali.
La candidata si sofferma, preliminarmente, definendo, in termini generali, l’origine e l’applicazione dei c.d. atti di soft law in ambito europeo e soffermandosi sul ruolo che ricopre la giurisprudenza nell’ordinamento europeo.
Sempre nel capitolo di apertura, un accenno è dedicato al panorama italiano che, alla luce delle recenti e continue riforme processuali ed, in particolare, della lettura costituzionalmente orientata del processo civile in forza della sua ragionevole durata, sta conoscendo, sempre più largamente, il fenomeno dei c.d. protocolli.
La tesi si sviluppa, poi, in altri tre capitoli, nei quali sono analizzati tre esempi di manifestazione del potere normativo degli organi giurisdizionali europei sul processo.
La candidata passa, così, all’esame delle “Istruzioni pratiche alle parti”, sviscerando le disposizioni ivi contenute alla luce di casi giurisprudenziali, al fine di poter definire la reale efficacia di tali atti e la loro vincolatività nei confronti dei rappresentanti delle parti.
A tale capitolo segue quello sull’applicazione del rinvio pregiudiziale tra soft law (c.d. Raccomandazioni) e giurisprudenza.
Infine, la candidata svolge le ultime riflessioni sul potere “eccezionale” della Corte di giustizia di limitare nel tempo gli effetti delle proprie sentenze interpretative. Potere che, in questo caso, si manifesta non mediante l’emanazione di atti di soft law, ma attraverso le proprie pronunce giurisprudenziali.The thesis aims to reflect on the power of the courts to provide normatively on some aspects of the proceedings that take place before them, thus replacing the legislator. The investigation plan of the thesis is developed considering the European situation before the courts of Luxembourg, through continuous references to cases law. The candidate focuses, firstly, defining, in general terms, origin and application of so-called soft law acts in Europe and focusing on the role of jurisprudence in the European system. In the first chapter, a hint is dedicated to the Italian overview, in the light of recent reforms of civil proceedings and with particular reference to the phenomenon of so-called “protocols”. The thesis is then developed in three other chapters, in which the candidate analyzes three examples of the manifestation of normative power of the European Courts on the proceedings. The candidate examines the "Practice Directions to parties": identifying the provisions contained in the light of cases law, in order to define the real effectiveness of these acts and their binding against parties’ representatives. The third chapter is about preliminary ruling procedure between soft law (so-called “Recommendation to national courts and tribunals in relation to the initiation of preliminary ruling proceedings) and jurisprudence. In the end, the candidate plays the latest reflections on "exceptional" power of the Court of Justice of the European Union to limit the temporal effects of its interpretative judgments. Power which, in this case, is manifested not through the enactment of soft law acts, but through its case law.
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Passerini, Davide. "Gli Angiò-Durazzo : la rappresentazione del potere." Thesis, Avignon, 2020. http://www.theses.fr/2020AVIG1204.
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Cette thèse de doctorat a pour objet l’étude de la dynastie Anjou-Durazzo, et aborde plus spécifiquement l’angle de la construction de la légitimation du pouvoir et du consensus autour du souverain. La perspective choisie découle de la prise de conscience des défis liés à la légitimation et au consensus du pouvoir devenus peut-être encore plus pressants de nos jours, alors que la crise économique, les phénomènes migratoires et l’actuelle pandémie déstabilisent les gouvernements, les institutions nationales et supranationales de l’Occident. La problématique de la légitimation et du consensus comme éléments fondateurs du pouvoir était déjà présente au Moyen Âge et comprendre les instruments politiques et symboliques utilisés par les Anjou-Durazzo, base de leur domination, est l’idée maîtresse de la thèse .Les textes ont été le premier champ d’étude pris en considération. Je me suis focalisé sur l’analyse de documents de la chancellerie des Anjou-Durazzo. J’ai mené une enquête en série sur les actes, en particulier sur le préambule ou harangue, considéré comme la partie rhétorique du document. Mon hypothèse a été que leur présentation sous forme répétitive donnait une représentation idéale du prince. J’ai analysé d’autres thématiques telles que les cérémonies royales, les ordres chevaleresques et l’héraldique. Les rituels monarchiques que j’ai pris en compte sont essentiellement les couronnements et funérailles, événements fondamentaux de la vie d’un royaume, auxquels les personnes participaient en plus grand nombre, où la communication symbolique avait une portée plus vaste pour manifester la pérennité de la royauté. Parmi les premiers actes de la dynastie, on retrouve celui de la fondation d’un ordre chevaleresque, qui avait son propre cérémonial, réservé à ses membres, mais aussi, identifiable à son habillement. Cette attention portée à la valeur communicative de l’appartenance à un clan est typique de l’héraldique. Pendant la domination des Anjou-Durazzo est apparue l’utilisation innovative des armoiries sur les façades des maisons nobles, où la présence des fleurs de lys et du blason tripartite de Hongrie, France et Jérusalem manifestait la fidélité à la dynastie. Le mécénat des Anjou-Durazzo aussi renvoie à la communication symbolique. Je ne me suis cependant pas limité à l’étude des œuvres commissionnées par la dynastie. Je les ai analysées en les mettant en lien avec les choix dévotionnels de cette branche de la dynastie angevine, à propos desquels on est renseigné par la localisation de leurs tombeaux. Cette recherche a été étendue à toute l’histoire des Anjou-Durazzo. La thèse analyse aussi les structures du pouvoir mis en place par les ordres royaux sur l’ensemble du territoire, au regard des réformes, réalisées ou tentées. Je suis convaincu que la « bureaucratie » participait à la représentation du pouvoir des Anjou-Durazzo, puisque les changements dans l’organisation et les pratiques de l’administration royale concourraient aux équilibres institutionnels. Cette analyse est précédée d’une histoire politique qui offre des approfondissements sur des événements-clés de la dynastie. La thèse montre à quel point les Anjou-Durazzo cherchèrent désespérément une légitimation et un consensus afin de stabiliser leur pouvoir. Les documents, les cérémonies, les ordres chevaleresques, l’héraldique, les tombeaux, les fondations d’églises et le mécénat participèrent à la lutte contre l’instabilité en Italie du Sud pendant la période du Grand Schisme d’Occident. Au final, le projet des Anjou-Durazzo échoua faute d’un héritier de sang, car Jeanne II, dernière souveraine de la dynastie, fut impliquée dans la guerre des Deux Cent Ans entre les Angevins et les AragonaisThe doctoral thesis analyses the Anjou-Durazzo dynasty, in particular from the point of view of the construction of the legitimation of power and consensus around the sovereign. The perspective selected depends on awareness of the urgency of issues relating to legitimation and consensus, considering that today the economic crisis, migration and a pandemic are exhausting governments and national and supranational institutions in the West. The problem of legitimation and consensus as the founding elements of power was present also in the Middle Ages. The central point of the thesis is the understanding of the political and symbolic instruments used by the Anjou-Durazzo in order to give a basis for their domination."Writing" was the first field of study considered. I focused on the analysis of documentary production from the Chancellery of Anjou-Durazzo. I did a serial investigation of the acts of, in particular on the preamble or arenga, considered to be the rhetorical part of the document. My hypothesis was that in their recursion they contributed to composing the ideal portrait of the princeps.I analysed other themes, that is to say royal ceremonies, monarchical knightly orders and heraldry. Among the monarchical rituals I have taken into consideration especially the coronations and funerals, which were fundamental events during the life of a kingdom in which many people participated,and where therefore the symbolic communication had a potentially wider effect to manifest the perenniality of royalty. Among the first acts of the dynasty there was also the foundation of a chivalric order that brought with it not only a ceremoniality restricted only to the group of members, but also constituted a reference point immediately recognizable through clothing. This attention to the communicative value of belonging to a circle is the same that is found in heraldry. In the Durazzo period, an innovative use of blazons and coats of arms was found on the facades of noble residences, where the presence of lilies and the tripartite coat of arms of Hungary, France and Jerusalem served to demonstrate loyalty to the Durazzo dynasty.The commissioning of the Durazzo also refers to symbolic communication. However, I did not limit myself to reviewing the works commissioned by the dynasty, but I wanted to link them to the analysis of the devotional choices of this Angevin branch, on which above all the location of their tombs illuminates us, extending the research to the whole history of the Durazzo.The thesis also took into consideration the structures of power that could transmit and implement royal orders in the territory, trying to reconstruct some reforms, implemented or attempted, in the belief that even the "bureaucracy" could contribute in giving a representation of the Durazzo power, given that changes in the organization and practices of the royal administration had consequences in the institutional balance. This analysis is preceded by a historical profile that offers an in-depth analysis of some key events in the events of the dynasty.From this thesis it emerges how the Durazzo desperately chased a legitimacy and a consensus that stabilized their power. Documents, ceremonies, chivalric orders, heraldry, tombs, foundations of churches and commissions, all contributed to contrasting the instability that hit the continental Mezzogiorno starting from the Great Schism. Ultimately, the project of Durazzo failed due to the absence of a biological heir, and Giovanna II, the last ruler of the dynasty, ended up involved in the war of the Two Hundred Years between the Angevins and the Aragonese. 11-05-2020
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MARIANI, PAOLA. "IL POTERE DI VIGILANZA E CONTROLLO DATORIALE." Doctoral thesis, Università Cattolica del Sacro Cuore, 2017. http://hdl.handle.net/10280/18750.
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Lo scopo della tesi di dottorato è l’approfondimento delle disposizioni statutarie relative all’esercizio del potere datoriale di vigilanza e controllo dell’attività lavorativa, alla luce dei numerosi interventi della giurisprudenza e della dottrina resisi necessari al fine di fornire un’interpretazione evolutiva delle disposizioni, così da bilanciare la ratio sottesa ed il contesto lavorativo in continua mutazione – ma anche dei recenti interventi legislativi del 2015 e 2016. Dopo aver effettuato brevi cenni sulle fonti del potere datoriale in analisi (Codice Civile), si ricostruirà il percorso legislativo ed interpretativo del potere datoriale, dal Codice Civile allo Statuto dei Lavoratori. Successivamente, si analizzeranno le norme relative al controllo umano (o non tecnologico) – dunque, gli artt. 2, 3 e 6 dello Statuto dei Lavoratori. Sarà, poi, effettuata un’ampia analisi della norma che disciplina per antonomasia il controllo meccanico (o tecnologico) da parte del datore di lavoro – vale a dire l’art. 4 dello Statuto dei Lavoratori – la quale è stata oggetto di revisione ad opera del D.Lgs. n. 151/2015 (ed anche, successivamente, del D.Lgs. n. 185/2016).The scope of the PhD thesis is the analysis of the provisions of Law no. 300/1970 (the Workers’ Statute) governing the exercise of the employer’s power of supervising and monitoring the working activity, in the light with the numerous courts’ decisions and scholars views and interpretations (issued for the purposes of providing an evolutive interpretation of these provisions, so to balance the ratio behind them and the working environment which is constantly changing), and also in the light with the recent legislative changes implemented in 2015 and 2016. After having briefly analysed the source of this employer’s power (i.e., the Italian Civil Code), the thesis would highlight the legislative and interpretative processes which have involved the employer’s power of supervising and monitoring the working activity, starting from the Italian Civil Code to the Workers’ Statute. Then, there will be the analysis of the specific provisions regulating the human control (or non technological control) – thus articles 2, 3 and 6 of the Workers’Statute – by the employer. An extensive analysis of art. 4 of the Workers’Statute (which the provision governing the mechanical control (or control via technological equipments) carried out by the employer, which has been subject to review by Legislative Decree no. 151/2015 (and also, subsequently, by Legislative Decree no. 185/2016).
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Hudíková, Tereza. "Vliv rozdílných diet na hematologické a biochemické ukazatele u laboratorního potkana." Master's thesis, Česká zemědělská univerzita v Praze, 2015. http://www.nusl.cz/ntk/nusl-256740.
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This thesis aims to investigate the relationship between increased protein dosage intake and selected haematological and biochemical markers. An experiment was designed using the Wistar laboratory rats of the male gander and similar age (born within +/- 5 days). These specimens were then divides into 3 groups with 10 specimens each. The age of the specimens at the beginning of the experiment was around 62 days. The first group was fed the standard corny mixture ad libitum, while the second group received 6 grams of the standard corny mixture and 10 grams of beef meat per day (thus reflecting the same amount of nitrous compounds as for the first group) and the last (third) group was fed ad libitum with homogenised beef meat. Before the diet was imposed on the three groups, blood samples were collected from all specimen from the lateral tail vein; after the diet was completed, blood samples were collected by in vivo heart puncture. All blood samples were subjected to haematological (using EDTA blood) and biochemical (using blood plasma) analysis. Overall, the following markers were measured: amount of erythrocytes, haematocrit level, haemoglobin level and Mean Corpuscular Volume (MCV) for the haematological analysis and triacylglycerol level, cholesterol level, amount of urea, amount of magnesium and the amount of iron for the biochemical analysis. Dietary induced significant changes were observed for the following markers: number of erythrocytes, levels of haemoglobin and MCV from the haematological analysis and cholesterol levels, amount of magnesium and amount of iron from the biochemical analysis; therefore showing that altered diet can have affect haematological and biochemical blood markers.
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Sloup, Vladislav. "Vliv tasemnice (Hymenolepis diminuta) na bioakumulaci zinku v těle hostitele (Rattus norvegicus)." Doctoral thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-259687.
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This research investigates the ability of rat tapeworm (Hymenolepis diminuta) to accumulate zinc in tissue and the influence of its intake and excretion by its host (laboratory rat). The host was fed by food with zinc in two forms: 1) a mixture of standard food ST1 with hyperaccumulator plant Arabidopsis halleri, 2) ST1 mixture with zinc lactate, which is ordinarily used as a feed supplement for increasing zinc content and it is often included in human diet supplements. Rat control group fed by ST1 only was included in the experiment for verification of the difference. Rats were divided to six groups (OO, OT, RT, RO, MO a MT). Three rat groups were infected by rat tapeworm (OT, RT, MT) and three rat groups were not infected (OO, RO, MO). The control groups OO and OT were fed by ST1 only. RO and RT groups were fed by ST1 with admixture of Arabidopsis halleri and groups MO and MT were fed by ST1 with zinc lactate. Urine and excrements of the rats were collected twice a week during the experiment and their amounts were measured every day. The rats were weighted every week. At the end of the balance phase of the experiment rats were euthanized and seven selected tissues were removed (liver, kidney, spleen, small intestine, testis, muscle and bone). Rat tapeworm was removed from the infected rats. Blood was drawn from the rats. The results show that rat groups infected by the rat tapeworm had lower concentration of zinc in almost all analyzed tissues except for spleen, where the concentration of zinc was the same as in groups without the rat tapeworm. Based on the results the rat tapeworm also has an influence on the excretion of feces and urine.
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Lavergne, Stéphane. "Étude expérimentale de poteaux en béton armé confinés par une enveloppe en matériaux composites." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0005/MQ40603.pdf.
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Paris, Jean-François. "Simplification du calcul de la rigidité des poteaux dans la méthode des portiques équivalents." Mémoire, Université de Sherbrooke, 2013. http://hdl.handle.net/11143/6202.
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Le calcul d'une dalle bidirectionnelle est un processus long et complexe demandant une certaine expérience. La norme CSA A23.3-04 suggère deux méthodes : la méthode directe et la méthode du portique équivalent. La première est efficace pour certaines géométries (CSA A23.3-04 art.) tandis que la deuxième permet de couvrir pratiquement toutes les géométries. Cette dernière consiste à analyser des portiques 2D, représentant chacun une section de la dalle, dans lesquels l'inertie des poteaux est réduite par un certain facteur. Le calcul de ce facteur peut se faire de deux façons, soit en calculant la rigidité équivalente du poteau ou en utilisant les formules 13-21 et 13-22 de la norme. Toutefois, la validité de ces deux dernières équations est remise en question dans la littérature. D'où l'importance d'effectuer une optimisation de ces équations afin d'assurer l'intégrité structurale des ouvrages en béton armé. Cette optimisation est possible grâce à la disponibilité de plusieurs logiciels offrant les analyses par éléments finis tels que SAFE et SAP2000. Ces logiciels permettent d'analyser rapidement et efficacement un grand nombre de géométries différentes. Les géométries qui sont étudiées dans la présente recherche se concentrent autour de trois grandes catégories de dalles, soit : les dalles pleines sur poteaux, les dalles avec poutres de rive et les dalles avec poutres entre tous les appuis. Des variations au niveau des portées ainsi que des dimensions des poteaux sont effectuées afin de couvrir le plus de cas possible. Des analyses statistiques de type 2k ainsi que des analyses paramétriques orientées grâce aux résultats des analyses statistiques sont réalisées pour chacune des trois catégories. Les résultats sont ensuite combinés pour obtenir des équations améliorées. En bref, ces équations améliorées permettent de diminuer les écarts entre les valeurs calculées et les valeurs obtenues avec la méthode de la rigidité équivalente. Ainsi, les ingénieurs ont à leur disposition une méthode davantage précise, efficace et rapide.
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Lavergne, Stéphane. "Étude expérimentale de poteaux en béton armé confinés par une enveloppe en matériaux composites." Sherbrooke : Université de Sherbrooke, 1998.
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LIMATOLA, CARLO. "POTERE DI GESTIONE E PASSAGGI GENERAZIONALI NELLA S.R.L." Doctoral thesis, Università Cattolica del Sacro Cuore, 2015. http://hdl.handle.net/10280/6137.
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La tesi ha ad oggetto il passaggio generazionale nelle imprese di famiglia costituite in forma di società a responsabilità limitata, valutandone l’impatto sulla disciplina dell’amministrazione. Si rileva che i meccanismi tradizionali fondati esclusivamente sul trasferimento delle quote sociali non riescono a conciliare le esigenze di continuità dell’impresa e le norme di diritto successorio. Si individuano, allora, regole in grado di assicurare la stabilità dell'amministrazione anche dopo le modifiche alla compagine sociale conseguenti all’ingresso degli eredi. Lo studio si riferisce, da una parte, a regole convenzionali che garantiscono la permanenza dell’amministratore nella carica; dall’altra, a clausole con lo scopo di arginare l’interferenza dei nuovi soci sulle scelte di governance. Si dimostra, infine, la legittimità di una previsione statutaria che impone la successione automatica di un beneficiario nella carica di amministratore.The thesis deals with the generational shift in family enterprises constituted as a limited liability company, assessing the impact on the discipline of the administration. It notes that traditional mechanisms based solely on the transfer of shares can not reconcile the needs of business continuity and the rules of inheritance law. Then, are identified rules that ensure the stability of the administration even after the changes to the shareholding structure resulting from the entrance of the heirs. The study refers, on the one hand, in the conventional rules which ensure the permanence of the administrator in charge; on the other, to clauses in order to curb the interference of new members on the choices of governance. It shows, finally, the legitimacy of a statutory provision requiring the automatic succession of a beneficiary in the position of director.
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Yu, Chun Wing. "Potent divalent vancomycins against vancomycin resistant enterococci (VRE) /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202002%20YU.
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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002.Includes bibliographical references (leaves 71-76). Also available in electronic version. Access restricted to campus users.
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Lega, Isabella. "Lingua e potere: la lotta fascista contro Xeno." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7153/.
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La lingua varia nel corso del tempo sia in maniera autonoma, poiché esposta a vari fattori di cambiamento, sia a causa di scelte concrete imposte dal potere politico. Tali decisioni prese dall’alto prendono il nome di politiche linguistiche e talvolta possono assumere pericolosi risvolti antidemocratici. Molto spesso, infatti, i regimi totalitari fanno leva sulla sfera linguistico-comunicativa per assoggettare il popolo: orientare le scelte linguistiche di una comunità di parlanti equivale di fatto a modificare l’identità della società in questione. Un esempio che fa parte del mondo della letteratura è la logocrazia descritta nelle pagine del romanzo 1984 di George Orwell, in cui il potere politico si impone soprattutto grazie alla creazione di una nuova lingua. Purtroppo, la storia pullula anche di esempi reali e il fascismo rientra pienamente in questa categoria. La politica linguistica fascista mirava a purificare l’italiano eliminando tutti quegli elementi che ne minacciavano l’integrità. In particolare, Mussolini lanciò una campagna contro i prestiti linguistici, che impedivano all’Italia di affermare la propria indipendenza dallo straniero. Uno dei manifesti della lotta ai forestierismi è l’articolo La difesa della lingua italiana scritto nel 1926 dal diplomatico Tommaso Tittoni, in cui l’autore, mosso da patriottismo purista, auspicava l’emanazione di un decreto che regolasse l’uso delle parole straniere. Le tappe storiche dell’accanimento fascista contro gli esotismi sono numerose e spaziano dai primi segni di intolleranza, primo fra tutti il decreto del 1923 che imponeva una tassa quadrupla sulle insegne in lingua straniera, fino ai provvedimenti dei primi anni quaranta, quando i forestierismi furono definitivamente vietati in ambito commerciale e sostituiti da termini corrispondenti italiani proposti dall’Accademia d’Italia.
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Santafianos, Dinos. "Studies on the potent limonoid insect antifeedant azadirachtin." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/46471.
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Todoroki, Yasushi. "STUDIES ON HIGHLY POTENT ANALOGUES OF ABSCISIC ACID." Kyoto University, 1996. http://hdl.handle.net/2433/160864.
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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものであるKyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第6474号
農博第887号
新制||農||720(附属図書館)
学位論文||H8||N2918(農学部図書室)
UT51-96-F353
京都大学大学院農学研究科食品工学専攻
(主査)教授 大東 肇, 教授 安本 教傳, 教授 岩村 俶
学位規則第4条第1項該当
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Běťák, Rostislav. "Vývoj samonivelačního potěru na bázi ternárního pojivého systému." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-239976.
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The thesis deals with the development of self-leveling cement screed with compensated shrinkage. It is a ternary binder system with the majority of portland cement, that in the beginning of setting and hardening form an expandable folder ettringite. At first there was a background research of volume changes of hydrating cement composites and methods for measuring these changes. Various sort of expansion additives were also introduced, the main emphasis was on concepts of calculated formation of ettringite, which are typical for self-leveling underlayment. Background research included the issues of formation of ettringite, influences on it’s nucleation and it’s stability. The practical development of the screed began by measuring volume changes of different pastes on a ternary composition. Selected formulations suitable for use are verified together with additives to semi-application tests. After the final configuration of the screed mixture, there was a test in real application of an representative area. Individual formulations were tested in terms of long-term stability of ettringite in dry and moist environments.
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Hong, Fang-Tsao. "A synthetic approach toward the potent antifeedant dumsin /." The Ohio State University, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487950153601256.
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Takaya, Junichiro. "A Potent and Site-Selective Agonist of TRPA1." Kyoto University, 2016. http://hdl.handle.net/2433/215437.
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This document is the Accepted Manuscript version of a Published Work that appeared in final form in the Journal of the American Chemical Society, copyright ©American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/jacs.5b10162.Kyoto University (京都大学)
0048
新制・課程博士
博士(医学)
甲第19611号
医博第4118号
新制||医||1015(附属図書館)
32647
京都大学大学院医学研究科医学専攻
(主査)教授 齊藤 博英, 教授 渡邊 直樹, 教授 松原 和夫
学位規則第4条第1項該当
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Maranda, Richard. "Analyses par éléments finis de poteaux mixtes avec section d'acier en I de classe 4." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0006/MQ42915.pdf.
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Abdel, Aziz Mahmoud. "Modèle numérique pour l'étude du flambement de poteaux soumis à l'incendie avec gradients de température." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376020314.
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Métiche, Slimane. "Évaluation expérimentale et théorique du comportement à la flexion de nouveaux poteaux en matériaux composites." [S.l. : s.n.], 2008.
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Benmansour, Mohamed Benali. "Modélisation du comportement cyclique alterné du béton armé. Application à divers essais statiques de poteaux." Marne-la-vallée, ENPC, 1997. http://www.theses.fr/1997ENPC9723.
Full textAbstract:
Le comportement des structures sous certains types d'actions tels que les séismes nécessite une bonne connaissance du comportement des matériaux composants sous des charges cycliques. Dans cette étude, le modèle de comportement cyclique du béton est base sur la théorie de l'endommagement, sur la mécanique des milieux continus et la thermodynamique des processus irréversibles. Ce modèle tient compte des déformations résiduelles et de la perte de raideur due à la fissuration. Dans son application, les effets bis axiaux et le fluage ne sont pas pris en considération. Le comportement des armatures est considéré élasto-plastique parfait. Une amélioration importante pour l'application du modèle a été de définir une méthode d'identification des paramètres à partir des données physiques obtenues dans les essais classiques de contrôle du béton et d'une expression analytique de la loi de comportement d'usage courant. Le modèle uniaxial est introduit dans un code numérique pour structures planes. La structure à analyser est découpée en plusieurs éléments de poutres. Chaque élément est représenté par un certain nombre de sections. La section est divisée en plusieurs fibres soumises à une sollicitation uniaxiale. Chaque fibre suit sa propre histoire conforme au modèle ci-dessus, mais sa déformation respecte la loi de planéité de la section considérée. Des essais de validation ont été réalisés sur des éprouvettes cylindriques sous charges cycliques de compression, sur des poteaux courts sous compression - traction cyclique et sur des poteaux sous flexion alternée et effort normal constant. La comparaison modèle-essais apporte des résultats encourageants pour l'analyse des structures en béton armé sous charges cycliquesThe behavior of strutures under seismic loads needs a good knowledge of materials behavior under these loads. In this study, the model for the concrete behavior is based on the theory of damage, on the mechanics of continuum media and the thermodynamics of irreversible proesses. This model takes into account the inelastic deformation and the loss of ridigity due to cracking. The biaxial and the creep effects are not considered. The behavior of the reinforcement steel is elastic perfecly plastic. An important improvement for the application of the model has been to define a method of identification of parameters based on physical data obtained from concrete classical tests and from an analytical expression of the behavior law of common use. The monoaxial model is implemented in a numerical code for plane structures. The analysed structure is discretise into several beam elements. Each element is represented by a certain number of sections. The section is divided into fibers subjected to monoaxial sollicitations. Each fiber follows its own history that is conformable to the model ; its deformation agrees with the place section hypothesis. Validation tests has been carried on standard cylinders subjected to repeated compressive loads. Other tests are also performed on short columns under normal reversible forces and on columns under alternate bending forces. The comparison between the model and tests gives encouraging results for analysis of plane reinforced concrete structure under cyclic loading