998 resultados para Relation quantitative propriété-propriété
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Microindentation in bone is a micromechanical testing technique routinely used to extract material properties related to bone quality. As the analysis of microindentation data is based on assumptions about the contact between sample and surface, the aim of this study was to quantify the topological variability of indentations in bone and examine its relationship with mechanical properties. Indentations were performed in dry human and ovine bone in axial and transverse directions and their topology was measured by atomic force microscopy. Statistical shape modeling of the residual imprint allowed to define a mean shape and to describe the variability in terms of 21 principal components related to imprint depth, surface curvature and roughness. The indentation profile of bone was found to be highly consistent and free of any pile up while differing mostly by depth between species and direction. A few of the topological parameters, in particular depth, showed significant but rather weak and inconsistent correlations to variations in mechanical properties. The mechanical response of bone as well as the residual imprint shape was highly consistent within each category. We could thus verify that bone is rather homogeneous in its micromechanical properties and that indentation results are not strongly influenced by small deviations from an ideally flat surface.
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Mode of access: Internet.
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Encuadernado con: Description d'une nouvelle espèce du genre "Dasytes" par M. le docteur Graells, traduite en français par M. Léon Fairmaire, séances des 4 mai et 1er. juin 1842.
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Mode of access: Internet.
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Mode of access: Internet.
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Contiene: Recherches sur le principe du droit et du Gouvernement (pp. 13-225) -- Lettre a M. Blanqui sur la propriété (227-353 p.)
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Mode of access: Internet.
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Contiene: T. I (XVI, 348 p.) -- T. II (II, 324 p.)
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Contiene : Tome premier.
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Contiene: T. I (CC, 518 p.) -- T. II.
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Mode of access: Internet.
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Contiene los textos traducidos de los Libros VI y VII de Pandectas.
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Includes folded tables.
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At head of title: Université de Toulouse--Faculté de droit.