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Silk Fibroin/Gold Nanocrystals： A New Example of Biopolymer-based Nanocomposites

材料科学与工程（中英文B版） 2017年第3期7卷 120-126页

作者： S. Noinville A. Gamier A. Courty sorbonne universites UPMC Univ Paris 06 CNRS UMR8233 MONARIS Universite Pierre et Marie Curie 4 Place Jussieu Paris F-75005 France

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Feedback Stabilization for a Scalar Conservation Law with PID Boundary Control

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Chinese Annals of Mathematics,Series B 2015年第5期36卷 763-776页

作者： Jean Michel CORON Simona Oana TAMASOIU sorbonne Universités UPMC University Paris 06 NUMR 7598 Laboratoire Jacques-Louis Lions F-75005Paris France Université Paris Sud F-91405 Orsay France

This paper deals with a scalar conservation law in 1-D space dimension, and in particular, the focus is on the stability analysis for such an equation. The problem of feedback stabilization under proportional-integral-derivative(PID for short) boundary control is addressed. In the proportional-integral(PI for short) controller case, by spectral analysis, the authors provide a complete characterization of the set of stabilizing feedback parameters, and determine the corresponding time delay stability interval. Moreover, the stability of the equilibrium is discussed by Lyapunov function techniques, and by this approach the exponential stability when a damping term is added to the classical PI controller scheme is proved. Also, based on Pontryagin results on stability for quasipolynomials, it is shown that the closed-loop system sub ject to PID control is always unstable.

关键词： Boundary feedback FID controllers Linear scalar conservation law

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应用速度编码MRI研究特定年龄段左心室舒张功能的变化

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国际医学放射学杂志 2015年第3期 301-302页

作者： S 1146, Laboratoire d'Imagerie Biomedicale,75013, Paris,France S 1146, Laboratoire d'Imagerie Biomedicale,75013, Paris,France S 1146, Laboratoire d'Imagerie Biomedicale, 75013, Paris,France S 1146, Laboratoire d'Imagerie Biomedicale, 75013, Paris,France S 1146, Laboratoire d'Imagerie Biomedicale, 75013, Paris,France S 1146, Laboratoire d'Imagerie Biomedicale, 75013, Paris,France 战锟 sorbonne universites UPMC Univ Paris 06 UMR 7371UMR

目的评估相位对比MRI(PC-MRI)对亚临床、年龄相关的左心室(LV)舒张参数变化的检出能力,为超声心动图提供最新的年龄相关的参考范围(并非为MRI-PC本身),

关键词： MRI PC 舒张功能峰值速度年龄相关

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Analysis of microscopic properties of radiative shock experiments performed at the Orion laser facility

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High Power Laser Science and Engineering 2018年第2期6卷 189-201页

作者： R.Rodriguez G.Espinosa J.M.Gil E Suzuki-Vidal T.Clayson C.Stehle E Graham IUNAT Departamento de FisicaUniversidad de Las Palmas de Gran Canaria35017 Las Palmas de Gran CanariaSpain Instituto de Fusion Nuclear Universidad Politecnica de Madrid28040 MadridSpain Blackett Laboratory Imperial CollegeLondon SW7 2AZUK LERMA Sorbonne UniversitesUPMCObservatoire de ParisPSL Research UniversityCNRSF-75006 ParisFrance AWE AldermastonReading RG7 4PRUK

In this work we have conducted a study on the radiative and spectroscopic properties of the radiative precursor and the post-shock region from experiments with radiative shocks in xenon performed at the Orion laser facility. The study is based on post-processing of radiation-hydrodynamics simulations of the experiment. In particular, we have analyzed the thermodynamic regime of the plasma, the charge state distributions, the monochromatic opacities and emissivities, and the specific intensities for plasma conditions of both regions. The study of the intensities is a useful tool to estimate ranges of electron temperatures present in the xenon plasma in these experiments and the analysis performed of the microscopic properties commented above helps to better understand the intensity spectra. Finally, a theoretical analysis of the possibility of the onset of isobaric thermal instabilities in the post-shock has been made, concluding that the instabilities obtained in the radiative-hydrodynamic simulations could be thermal ones due to strong radiative cooling.

关键词： high-power lasers laboratory experiments on radiative shocks plasma radiative properties spectroscopy

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Institut du Cerveau et de la Moelle epiniere - ICM Brain ＆ Spine Institute, Paris

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Journal of Translational Neuroscience 2016年第2期1卷 63-66页

作者： Bernard Zalc sorbonne universites UPMC Univ Paris 06CNRSINSERMGHPitie-SalpetriereInstitut du cerveau et de la moelle epiniere(ICM)F-75013ParisFrance

The Institut du Cerveau et de la Moelle epiniere - ICM （Brain ＆ Spine Institute） - is an international brain and spinal cord research center whose innovative concept and structure make ita unique institute of its kind. The ICM brings patients, medics and researchers together with the aim of rapidly develop treatments for disorders of the nervous system and enable patients to benefit from them as quickly as possible. Scientists from different backgrounds and countries come together at the Institute to perform leading-edge research in this area.

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Sliding walls: a new paradigm for fluidic actuation and protocol implementation in microfluidics

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Microsystems & Nanoengineering 2020年第1期6卷 1093-1102页

作者： Bastien Venzac Yang Liu Ivan Ferrante Pablo Vargas Ayako Yamada Remi Courson Marine Verhulsel Laurent Malaquin Jean-Louis Viovy Stephanie Descroix Laboratoire Physico Chimie Curie Institut CuriePSL Research UniversityCNRS UMR16875005 ParisFrance sorbonne universites UPMC Univ Paris 0675005 ParisFrance Institut Pierre-Gilles de Gennes PSL Research University75005 ParisFrance Institut Curie PSL Research UniversityCNRS UMR 14475005 ParisFrance LAAS-CNRS Universitéde ToulouseCNRS31400 ToulouseFrance

Currently,fluidic control in microdevices is mainly achieved either by external pumps and valves,which are expensive and bulky,or by valves integrated in the *** types of internal valves or actuation methods have been proposed,but they generally impose difficult compromises between performance and fabrication *** propose here a new paradigm for actuation in microfluidic devices based on rigid or semi-rigid walls with transversal dimensions of hundreds of micrometres that are able to slide within a microfluidic chip and to intersect microchannels with hand-driven or translation stage-based *** this new concept for reconfigurable microfluidics,the implementation of a wide range of functionalities was facilitated and allowed for no or limited dead volume,low cost and low *** demonstrate here several fluidic operations,including on/off or switch valving,where channels are blocked or reconfigured depending on the sliding wall *** valves sustain pressures up to *** and reversible compartmentalisation of large microfluidic chambers were also *** last possibility was applied to a“4D”migration assay of dendritic cells in a collagen ***,sliding walls containing a hydrogel-based membrane were developed and used to concentrate,purify and transport biomolecules from one channel to another,such functionality involving complex fluidic transport patterns not possible in earlier microfluidic ***,this toolbox is compatible with“soft lithography”technology,allowing easy implementation within usual fabrication workflows for polydimethylsiloxane *** new technology opens the route to a variety of microfluidic applications,with a focus on simple,hand-driven devices for point-of-care or biological laboratories with low or limited equipment and resources.

关键词： walls hundreds operations

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Marine invasions enter the genomic era： three lessons from the past, and the way forward

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Current Zoology 2016年第6期62卷 629-642页

作者： Frederique VIARD Patrice DAVID John A. DARLING sorbonne universites UPMC Univ Paris 06 CNRS UMR 7144 Lab. Adaptation Et Diversite En Milieu Marin Team Div&Co Station Biologique De Roscoff Roscoff 29682 France CEFE UMR 5175 CNRS-Universite De Montpellier- UM III-EPFIE 1919 Route De Mende Montpellier Cedex 34293 France National Exposure Research Laboratory United States Environmental Protection Agency Research Triangle Park NC 27711 USA

The expanding scale and increasing rate of marine biological invasions have been documented since the early 20th century. Besides their global ecological and economic impacts, non-indigenous species （NIS） also have attracted much attention as opportunities to explore important eco-evolutionary processes such as rapid adaptation, long-distance dispersal and range expansion, and secondary contacts between divergent evolutionary lineages. In this context, genetic tools have been extensively used in the past 20 years. Three important issues appear to have emerged from such studies. First, the study of NIS has revealed unexpected cryptic diversity in what had previously been assumed homogeneous entities. Second, there has been surprisingly little evidence of strong founder events accompanying marine introductions, a pattern possibly driven by large propagule loads. Third, the evolutionary processes leading to successful invasion have been difficult to ascertain due to faint genetic signals. Here we explore the potential of novel tools associated with high-throughput sequencing （HTS） to address these still pressing issues. Dramatic increase in the number of loci accessible via HTS has the potential to radically increase the power of analyses aimed at species delineation, exploring the population genomic consequences of range expansions, and examining evolutionary processes such as admixture, introgression, and adaptation. Nevertheless, the value of this new wealth of genomic data will ultimately depend on the ability to couple it with expanded ＂traditional＂ efforts, including exhaustive sampling of marine populations over large geographic scales, integrated taxonomic analyses, and population level exploration of quantitative trait differentiation through common-garden and other laboratory experiments.

关键词： biological invasions cryptic species cryptogenic species eco-evolutionary processes genornics metabarcoding

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Modeling the antigen recognition by B-cell and T-cell receptors through thermostatted kinetic theory methods

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International Journal of Biomathematics 2017年第5期10卷 263-299页

作者： Carlo Bianca Louis Brezin Laboratoire de Recherche en Eco-innovation Industrielle el Energetique ECAM-EPMI 13 Boulevard de l'Hautil 95092 Cergy Pontoise Cedex France Laboratoire de Physique Statistique Ecole Normale Supdrieure PSL Research University Universite Paris Diderot Sorbonne Paris-Cite Sorbonne Universites UPMC Univ Paris 06 CNRS 24 rue Lhomond 75005 Paris France Institut Universitaire de Cancdrologie Facultg de Medecine Universite Pierre et Marie Curie-Paris 6 91 Bd de l'Hopital 75013 Paris France

The activation and the resulting response of the immune system to antigens comprise different complex processes and cells. This paper aims at modeling the processes of recognition and learning of the immune system by means of the thermostatted kinetic theory methods. Specifically, the thermostatted kinetic framework is firstly generalized for taking into account that in some processes of proliferation of the cells, the rate is also function of the degree of information exchanged amongst cells. In particular, within the new framework, a mathematical model is proposed for miming the recognition process of the immune system through the definition of interactions between the cytoto^ic and humoral components of the adaptive immune system via T- and B-cells. The model validation is obtained by performing a sensitivity analysis on the parameters which depicts the main emerging phenomena and the different phases of the recognition and learning of the immune system.

关键词： Thermostatted kinetic theory integro-differential models learning and memory biological complexity immune system.

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Huge metastable axial strain in ultrathin heteroepitaxial vertically aligned nanowires

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Nano Research 2015年第6期8卷 1964-1974页

作者： Vivien Schuler Francisco Javier Bonilia Dominique Demaille Alessandro Coati Alina Vlad Yves Garreau Michele Sauvage-Simkin Anastasiia Novikova Emiliano Fonda Sarah Hidki Victor Etgens Franck Vidal Yunlin Zheng sorbonne universites upmc Institut des NonoSciences de Paris 4 place Jussieu Paris 75005 France CNRS UMR7588 Institut des NanoSciences de Paris 4 place Jussieu Paris 75005 France Synchrotron Soleil L'Orme des Merisiers Saint-Aubin BP 48 91192 Gif-sur-Yvette Cedex France Universite Paris Diderot Sorbonne Paris Cite MPO UMR 7162 CNRS Batiment Condorcet Case courrier 7021 75205 Paris Cedex 13 France Universite de Versailles Saint-Quentin en Yvelines 55 Av. de Paris Versailles 78035 France

Strain engineering is a powerful tool to tailor the physical properties of materials coherently stacked in an epitaxial heterostructure. Such an approach, applied to the mature field of planar heteroepitaxy, has yielded a variety of new phenomena and devices. Recently, heteroepitaxial vertically aligned nanocomposites have emerged as alternatives to planar structures. Owing to the peculiar geometry of such nanoarchitectures, efficient strain control can be achieved, opening the way to novel functionalities. In this paper, we report a very large tensile axial strain in epitaxial transition metal nanowires embedded in an oxide matrix. We show that axial strains in excess of 1.5% can be sustained over a large thickness （a few hundred nanometers） in epitaxial nanowires having ultrasmall diameters （-3-6 nm）. The axial strain depends on the diameter of the nanowires, reflecting its epitaxial nature and the balance of interface and elastic energies. Furthermore, it is experimentally shown that such strain is metastable, in agreement with the calculations performed in the framework of the Frenkel-Kontorova model. The diameter dependence and metastability provide effective ways to control the strain, an appealing feature for the design of functional nanoarchitectures.

关键词： self-assembly heteroepitaxy nanowires strain

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A Formal Passage From a System of Boltzmann Equations for Mixtures Towards a Vlasov-Euler System of Compressible Fluids

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Acta Mathematicae Applicatae Sinica 2019年第1期35卷 158-173页

作者： Laurent DESVILLETTES Fran?ois GOLSE Valeria RICCI Université Paris Diderot Sorbonne Paris Cité Institut de Mathématiques de Jussieu-Paris Rive GaucheUMR CNRS 7586 CNRS Sorbonne Universités UPMC Univ CMLS Ecole polytechnique et CNRS Université Paris-Saclay Dipartimento di Matematica e Informatica Università degli Studi di Palermo

A formal asymptotics leading from a system of Boltzmann equations for mixtures towards either Vlasov-Navier-Stokes or Vlasov-Stokes equations of incompressible fluids was established by the same authors and Etienne Bernard in: A Derivation of the Vlasov-Navier-Stokes Model for Aerosol Flows from Kinetic Theory Commun. Math. Sci., 15: 1703–1741(2017) and A Derivation of the Vlasov-Stokes System for Aerosol Flows from the Kinetic Theory of Binary Gas Mixtures. KRM, 11: 43–69(2018). With the same starting point but with a different scaling, we establish here a formal asymptotics leading to the Vlasov-Euler system of compressible fluids. Explicit formulas for the coupling terms are obtained in two typical situations: for elastic hard spheres on one hand, and for collisions corresponding to the inelastic interaction with a macroscopic dust speck on the other hand.

关键词： Vlasov-Euler system Boltzmann equation Hydrodynamic limit Aerosols Sprays Gas mixture

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