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Academic literature on the topic 'ADN, élasticité'
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Journal articles on the topic "ADN, élasticité"
Labbe, Jean-Pierre. "Élasticité du centromère." médecine/sciences 21, no. 3 (March 2005): 261–66. http://dx.doi.org/10.1051/medsci/2005213261.
Full textFarkas, Olivia. "Élasticité du fil thérapeutique pendant le confinement." Enfances & Psy N°87, no. 3 (2020): 60. http://dx.doi.org/10.3917/ep.087.0060.
Full textDucoudré, Bruno, Iris Guezennec, Éric Heyer, Chloé Lavest, and Lucas Pérez. "Élasticités-prix du commerce international." Revue de l'OFCE 163, no. 1 (2020): 251. http://dx.doi.org/10.3917/reof.163.0251.
Full textZilkha, Nathalie. "D'une certaine élasticité dans la relation moi?surmoi." Revue française de psychanalyse 74, no. 3 (2010): 761. http://dx.doi.org/10.3917/rfp.743.0761.
Full textMathis, Jean. "Compétitivité et élasticités du commerce extérieur." Économie & prévision 94, no. 3 (1990): 13–22. http://dx.doi.org/10.3406/ecop.1990.5174.
Full textBourgin, Pierre-Yves, Vazken Andreassian, and Marine Riffard-Chenet. "Élasticité des débits aux précipitations en Afrique sub-saharienne." La Houille Blanche 106, no. 6 (December 1, 2020): 97–104. http://dx.doi.org/10.1051/lhb/2021005.
Full textRoger, Muriel, and Sébastien Roux. "Demande de travail et élasticité des heures au salaire." Recherches économiques de Louvain 75, no. 1 (2009): 63. http://dx.doi.org/10.3917/rel.751.0063.
Full textGavarri, J. R., P. Boher, and A. W. Hewat. "Monoxyde PbOα(II): Élasticité et vibrations anisotropes; modélisation; constantes élastiques." Journal of Solid State Chemistry 58, no. 1 (June 1985): 87–97. http://dx.doi.org/10.1016/0022-4596(85)90271-3.
Full textBouhennache, Tark, and Yves Dermenjian. "Nouvelles propriétés des courbes et relation de dispersion en élasticité linéaire." ESAIM: Mathematical Modelling and Numerical Analysis 33, no. 5 (September 1999): 1071–90. http://dx.doi.org/10.1051/m2an:1999135.
Full textSchubert, Katheline. "Cycle de vie et élasticité de l'épargne des ménages au taux d'intérêt." Économie & prévision 104, no. 3 (1992): 115–28. http://dx.doi.org/10.3406/ecop.1992.5296.
Full textDissertations / Theses on the topic "ADN, élasticité"
Vaillant, Cédric. "Influence de la séquence sur les propriétés élastiques des chaînes ADN." Paris 6, 2001. http://www.theses.fr/2001PA066531.
Full textBarberi, Luca. "Inferring forces from geometry in biology." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS438.
Full textInter-molecular forces on which we have poor prior knowledge are often essential for the stability and evolution of biological assemblies. In this thesis, we focus on two such forces that are critically involved in the deformation of either biopolymers or membranes. We infer these forces by reconciling the geometry of such deformation with simple mechanical models. In the first part of the thesis, we consider the attractive force between DNA molecules mediated by multivalent cations. This attraction is required to compensate DNA bending rigidity when packaging large quantities of DNA in comparatively small environments, such as the nuclei of sperm cells. In vitro, multivalent cations drive DNA condensation into dense toroidal bundles. Geometrical data on DNA toroidal bundles give access to the competition between inter-helical attraction and DNA bending rigidity. From these data, we infer inter-helical forces and argue that the toroid curvature weakens the adhesion between DNA molecules. In the second part of the thesis, we turn to the binding force of a membrane remodeling protein complex, ESCRT-III, to cellular membranes. ESCRT-III proteins assemble into membrane-remodeling polymers during many cellular processes, ranging from HIV budding to cytokinesis. The mechanism by which ESCRT-III polymers deform membranes is still unclear. In vitro, ESCRT-III polymers can reshape spherical membrane vesicles into helical tubes. We argue that helical tubes result from the peculiar positioning of membrane-binding sites on the surface of ESCRT-III polymers. Furthermore, we infer the binding force between ESCRT-III and membrane from the geometry of helical tubes
Dasanna, Anil Kumar. "Fermeture de bulles de dénaturation de l'ADN couplées à l'élasticité de l'ADN." Toulouse 3, 2013. http://thesesups.ups-tlse.fr/2260/.
Full textThe physical understainding of biological processes such as transcription requires the knowledge of double-stranded DNA (dsDNA) is its denaturation, at the melting temperature, in which it unwinds into two single-stranded DNAs via the formation of denaturation bubbles (segment of consecutive unpaired base-pairs). The dynamics of denaturation has beenstudies so far at the base-pair (bp) scale, ignoring conformational chaindegrees of freedom. These studies do not explain the very long closure times of 20 to 100µs, measured by atlan-Bonnet et al. , of 18 bps long bubbles at room temperature. In this thesis, we study the closure of pre-equilibrated large bubbles, by using Brownian dynamics simulations of two simple DNA coarse-grained models. We show that the closure occurs via two steps : first, a fast zipping of the initial bubble occurs until a meta-stable state is reached, due to the large bending and twisting energies stored in the bubble. Then, the mete-stable bubble closes either via rotational diffusion of the stiff side arms until their alignment, or bubble diffusion until it reaches the chain end, or locally by thermal activation, depending on the DNA length and elastic moduli. We show that the physical mechanism behind these long timescales is therefore the dynamical coupling between base-pair and chain degrees of freedom
Dessinges, Marie Noëlle. "Propriétés élastiques d'une molécule d'ADN simple brin et interactions ADN-Hélicase à l'échelle de la molécule unique." Paris 6, 2002. https://tel.archives-ouvertes.fr/tel-00001765.
Full textDessinges, Marie Noelle. "Proprietes elastiques d'une molécule d'ADN simple brin, et interactions ADN hélicases à l'échelle de la molécule unique." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2002. http://tel.archives-ouvertes.fr/tel-00001765.
Full textDouarche, Nicolas. "Modélisation d' expériences permettant la manipulation de molécules biologiques uniques." Paris 6, 2005. https://tel.archives-ouvertes.fr/tel-00011190.
Full textKocgozlu, Leyla. "Rôle de l’élasticité du substrat sur des cellules épithéliales en cours de division et sur la régulation d’activités nucléaires." Strasbourg, 2010. https://publication-theses.unistra.fr/public/theses_doctorat/2010/KOCGOZLU_Leyla_2010.pdf.
Full textMechanical forces influence the growth and the morphology of tissues. The actin cytoskeleton and the focal adhesion contacts have a structural role on the cell. A first question was to determine if the elasticity of the substrate modifies these organizations, and if they are indispensable to the preservation of nuclear activities of epithelial cells PtK2. The module of Young, E of the substrate varies 0 in 500kPa. The actin stress fibers of and the focal contacts are absent for an elasticity of 0 and 50kPa. The replication is also inhibited. From 200 kPa, Rac1 is responsible for the formation of the focal contacts, actin fibers and the initiation of the replication. The elasticity of 50kPa allows the activity of the transcription. These results reveal a selective and uncoupled contribution from the substrate elasticity on the replication and the transcription of cells PtK2. The second question was to investigate whether the substrate elasticity exerts an influence on dividing Ptk2. The soft 50kPa elasticity induces delays in mitosis and presents abnormal morphology in the segregation, promoting the apoptose. This substrate causes also multiple alterations, a low engagement of integrin αv and progressive disappearance of microtubule. In vitro, elasticity above 200 kPa is physiological for PtK2 cells. In contrast, below 50 kPa, epithelial cells undergo two selective checkpoints 1) mitotic spindle failures leading to cytokinesis inhibition and 2) total inhibition of replication. In conclusion, matrix elasticity could exert, in vivo, a natural selective barrier both for cells with high motility and for non-migratory cells sensing mechanical changes in their environments
Neukirch, Sebastien. "Enroulement, contact et vibrations de tiges élastiques." Habilitation à diriger des recherches, Université Pierre et Marie Curie - Paris VI, 2009. http://tel.archives-ouvertes.fr/tel-00667562.
Full textBaumann, Arthur. "Active motion and self-propulsion of polymers and fibers." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAE024/document.
Full textThis thesis manuscript deals with the study of two distinct projects. The first deals with the experimental design as well as the theoretical study of a brand new type of engine based on polymer fibers: the fiberdrive. The operation of this engine is based on a new physical concept described here, deformation modes with zero elastic energy (ZEEMs). These deformation modes are driven by a flow of energy that causes elastic deformation within the material. This manuscript develops a theoretical model that is confronted with the first experimental realization of this type of engine. The realized system is the simplest engine in the world, a stator without rotor.The second part of the manuscript introduces the concept of confotronics, the study of system composed of individually switchable units cooperating on a large scale. This concept is implemented in the realization of a DNA-based confotronic fiber as well as in the design of a DNA-based molecular engine
Santini, Guillaume. "Vers la prédiction de la structure tridimensionnelle des épingles à cheveux d' ADN et d' ARN comportant un appariement dans la boucle à partir de la théorie de l'élasticité et de la mécanique moléculaire." Paris 6, 2005. http://www.theses.fr/2005PA066355.
Full textBooks on the topic "ADN, élasticité"
M, Gere James, ed. Theory of elastic stability. Mineola, N.Y: Dover Publications, 2009.
Find full textStress, Coping, and Health in Families: Sense of Coherence and Resiliency (Resiliency in Families Series). Sage Publications, Inc, 1998.
Find full textI, McCubbin Hamilton, ed. Stress, coping, and health in families: Sense of coherence and resiliency. Thousand Oaks, Calif: Sage Publications, 1998.
Find full textStress, Coping, and Health in Families: Sense of Coherence and Resiliency (Resiliency in Families Series). Sage Publications, Inc, 1998.
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