<?xml version="1.0" encoding="UTF-8"?><lom xmlns="http://ltsc.ieee.org/xsd/LOM" xmlns:lomfr="http://www.lom-fr.fr/xsd/LOMFR" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://ltsc.ieee.org/xsd/LOM http://www.lom-fr.fr/xsd/lomfrv1.0/std/lomfr.xsd">
<general>
<identifier>
<catalog>Canal-U_Ocms</catalog>
<entry>1089</entry>
</identifier>
<title><string language="fre"><![CDATA[Morphogénèses chimiques : les réactions créatrices de rythmes et de formes]]></string></title>
<language>FRE</language>
<description>
<string language="fre"><![CDATA[La réaction chimique ne se limite pas à la seule transformation de réactifs en produits et énergie. Certaines réactions chimiques peuvent aussi donner spontanément naissance à des modulations spatiales (mobiles ou immobiles) de la concentration des espèces impliquées. Ces auto-organisations macroscopiques sont le résultat de l'association entre réaction chimique et la simple diffusion moléculaire de ces espèces. Ainsi naissent soit des ondes propagatives d'activité chimique prenant parfois la forme de spirales, soit des motifs stationnaires s'organisant en bandes parallèles ou bien en réseaux hexagonaux. Ces motifs stationnaires sont couramment qualifiés de " structures de Turing ", d'après le nom du mathématicien britannique Alan Turing qui les avait formellement prédites et proposait leur mécanisme de formation pour rendre compte de certains aspects du développent des êtres vivants. Nous expliquerons les principes essentiels qui régissent ces phénomènes d'auto-organisation dans ces systèmes de réaction-diffusion. Ceux-ci seront abondamment illustrés par d'étonnantes observations expérimentales dans des systèmes chimiques mettant en oeuvre des réactifs très ordinaires. Certaines extrapolations aux systèmes biologiques seront commentées.]]></string></description>
<keyword><string language="fre"><![CDATA[synthèse chimique]]></string></keyword><keyword><string language="fre"><![CDATA[système non linéaire]]></string></keyword><keyword><string language="fre"><![CDATA[système de réaction-diffusion]]></string></keyword><keyword><string language="fre"><![CDATA[structure de Turing]]></string></keyword><keyword><string language="fre"><![CDATA[réaction chimique oscillante]]></string></keyword><keyword><string language="fre"><![CDATA[phénomène d'auto-organisation]]></string></keyword><keyword><string language="fre"><![CDATA[onde chimique]]></string></keyword><keyword><string language="fre"><![CDATA[morphogénèse chimique]]></string></keyword><keyword><string language="fre"><![CDATA[diffusion moléculaire]]></string></keyword><keyword><string language="fre"><![CDATA[transformation chimique]]></string></keyword>
<lomfr:documentType>
<lomfr:source>LOMFRv1.0</lomfr:source>
<lomfr:value>image en mouvement</lomfr:value>
</lomfr:documentType>
</general><lifeCycle>
<contribute>
<role>
<source>LOMv1.0</source>
<value>author</value>
</role>
<entity><![CDATA[BEGIN:VCARD
VERSION:3.0
CLASS:PUBLIC
REV:2021-09-16 17:09:39
FN:Patrick DE KEPPER
N:DE KEPPER;Patrick;;;
URL;TYPE=work:https://www.canal-u.tv/auteurs/de_kepper_patrick
ROLE:author
NOTE: Patrick De Kepper Directeur de recherche CNRS Centre de recherche Paul Pascal (UPR 8641) Université de Bordeaux Address: Centre de recherche Paul Pascal (UPR 8641) Domaine universitaire 115, av. Dr. A. Scheweitzer 33 600 PESSAC, FRANCE e-mail: dekepper@crpp-bordeaux.cnrs.fr Tel: +33(0)556 84 56 07 Fax: +33(0)556 84 56 00 Personal data : Born in September 1945, Thèse 3ème cycle 1973, Thèse d'état 1978, Position Directeur de recherche CNRS Reseach activity [More details in French] Oscillatory chemical reaction: Design and design method of oscillatory reactions (cross-shape phase diagram) Reaction-diffusion patterns: Development of open spatial reactors; Experimental studies of spontaneous stationary symmetry breaking patterns; Discovery of Turing patterns; Interactions between the Turing instability and the oscillatory instability; Spatial bistability; Development of systematic design methods for stationary patterns; Chemo-mechanical patterns: Synergetic interaction between non-linear chemical reactions and chemo-responsive gels. SELECTED PUBLICATIONS J. Horváth, I. Szalai, P. De Kepper, "An experimental Design Method Leading to Chemical Turing Patterns", Science, 324, 772-775, (2009) [Abstract] [Full text]&gt; I. Szalai, P. De Kepper, "Patterns of the Ferrocyanide-Iodate-Sulfite Reaction Revisited: The Role of Immobilized Carboxylic Functions", J. Phys. Chem. A, 112, 5, 783-786, (2008). I. Szalai, P. De Kepper, "Pattern formation in the ferrocyanide-iodate-sulfite reaction: The control of space scale separation", Chaos, 18, 026105, 1-9, (2008). Z. Virányi, I. Szalai, J. Boissonade, P. de Kepper, "Substained Spatiotemporal Patterns in the Bromateâ€”Sulfite Reaction", J. Phys. Chem. A, 111, 8090-8094, (2007). V. Labrot, A. Hochedez, P. Cluzeau, P. De Kepper, "Spatiotemporal Dynamics of the Landolt Reaction in an Open Spatial Reactor with Conical Geometry", J. Phys. Chem. A, 110, 14043-14049, (2006). J. Boissonade, P. De Kepper, F. Gauffre, I. Szalai, "Spatial bistability: A source of complex dynamics. From spatiotemporal reaction-diffusion patterns to chemo-mechanical structures", Chaos, 16, 037110, 1-16, (2006). I. Szalai and P. De Kepper, "Spatial bistability, oscillations and excitability in the Landolt reaction", Phys. Chem. Chem. Phys., 8, 1105-1110, (2006). V. Labrot, P. De Kepper, J. Boissonade, I. Szalai, F. Gauffre, "Wave Patterns Driven by Chemomechanical Instabilities in Responsive Gels", J. Phys. Chem. B, 109, 46, 21476-21480, (2005). M. Fuentes, M.N. Kuperman, J. Boissonade, E. Dulos, F. Gauffre, P. De Kepper, "Dynamical Effects Induced by Long Range Activation in a Nonequilibrium Reaction-Diffusion System", Phys. Rev. E, 66, 056205, (2002). Szalai, F. Gauffre, V. Labrot, J. Boissonade, P. De Kepper, "Spatial Bistability in a pH Autocatalytic System: From Long to Short Range Activation", J. Phys. Chem. A, 109, 35, 7843-7849, (2005). D.E. Strier, P. De Kepper, J. Boissonade, "Turing Patterns, Spatial Bistability, and Front Interactions in the [ClO2,I2,I-,CH2(COOH)2] Reaction", J. Phys. Chem. A, 109, 1357-1363, (2005). I. Szalai, P. De Kepper, "Turing patterns, Spatial Bistability, and Front Instabilities in a Reaction-Diffusion System", J. Phys. Chem. A, 108, 5315-5321, (2004). A. De Wit, P. De Kepper, K. Benyaich, G. Dewel, P. Borckmans, "Hydrodynamical instability of spatially extended bistable chemical systems", Chem. Eng. Sci., 58, 4823-4831, (2003). B. Schmidt, P. De Kepper and S.C. Mueller, "Destabilization of Turing Structures by Electric Fields ", Phys. Rev. Lett., 90, 11, 118302(1-4), (2003). J. Boissonade, E. Dulos, F. Gauffre, M.N. Kuperman, P. De Kepper, "Spatial bistability and waves in a reaction with acid autocatalysis", Faraday Discuss., 120, 353-361, (2002). P. Borckmans, G. Dewel, A. De Wit, E. Dulos, J. Boissonade, F. Gauffre, P. De Kepper, "Diffusive instabilities and chemical reactions", Int. J. of Bifurcation and Chaos, 12, 11, 2307-2332, (2002). P. Blanchedeau, J. Boissonade and P. De Kepper, "Theoretical and experimental studies of spatial bistability in the chlorine-dioxide-iodide reaction", Physica D, 147, 283-299, (2000). B. Rudovics, E. Barillot, P.W. Davies, E. Dulos, J. Boissonade, P. De Kepper, "Experimental Studies and Quantitative Modeling of Turing Patterns in the (Chlorine Dioxide, Iodine, Malonic Acid) Reaction", J. Phys. Chem. A, 103, 1800, (1999). P.W. Davies, P. Blanchedeau, E. Dulos, P. de Kepper, "Dividing blobs, chemical flowers, and patterned islands in a reaction-diffusion system", J. Phys. Chem., A, 102, 8236-8244, (1998). P. De Kepper, E. Dulos, A. de Wit, G. Dewel, P. Borckmans, "Taches, rayures et labyrinthes", La Recherche, 305, 84-89, (1998). P. De Kepper and E. Dulos, "La chimie des formes", Pour la Science, 2687, 34-39, (1997). B. Rudovics, E. Dulos, P. De Kepper, "Standard and nonstandard Turing patterns and waves in the CIMA reaction", Phys. Scr., T67, 43-50, (1996). E. Dulos, P. Davies, B. Rudovics, P. De Kepper, "From quasi-2D to 3D Turing patterns in ramped systems", Physica D, 98, 53-66, (1996). P. De Kepper, J.J. Perraud, B. Rudovics, E. Dulos, "Experimental study of stationary Turing patterns and of their interaction with travelling waves in a chemical reaction", Int. J. of Bifurcation and Chaos, 4, 1215-1231, (1994). J.J. Perraud, A. De Wit, E. Dulos, P. De Kepper, G. Dewel, P. Borckmans, "One dimensional "spirals" : novel asynchronous chemical wave sources", Phys. Rev. Lett., 71, 1272-1275, (1993). K.I. Agladze, P. de Kepper, "Influence of electric field on rotating spiral waves in the usov-Zhabotinsky reaction", J. Phys. Chem., 96, 5239-5243, (1992). E. Dulos, J. Boissonade, P. De Kepper, "Dynamics and morphology of sustained two-dimensional wavetrains", Physica A, 188, 120-131, (1992). J.J. Perraud, K. Agladze, E. Dulos, P. De Kepper, "Stationary Turing patterns versus time-dependent structures in the chlorite-iodide-malonic acid reaction", Physica A, 188, 1-16, (1992). K. Agladze, E. Dulos and P. De Kepper, "Turing patterns in confined gel and gel-free media", J. Phys. Chem., 96, 6, 2400-2403, (1992). Q. Ouyang, V. Castets, J. Boissonade, J.C. Roux, P. De Kepper, H.L. Swinney, "Sustained patterns in chlorite-iodide reactions in a one dimensionnal reactor", J. Chem. Phys., 95, 351, (1991). P. De Kepper, V. Castets, E. Dulos, J. Boissonade, "Turing-type chemical patterns in the chlorite- iodide-malonic acid reaction", Physica D, 49, 161, (1991). V. Castets, E. Dulos, J. Boissonade, P. De Kepper, "Experimental evidence of a sustained standing Turing-type nonequilibrium chemical pattern", Phys. Rev. Lett., 64, 2953-2956, (1990). P. De Kepper, J. Boissonade, I.R. Epstein, "Chlorite-iodide reaction: A versatile system for the study of nonlinear dynamical behavior", J. Phys. Chem., 94, 6525-6536, (1990). Q. Ouyang, P. De Kepper, "An all sulfur chemistry based oscillator", J. Phys. Chem., 91, 6040-6042, (1987). P. Richetti, P. De Kepper, J.C. Roux, H.L. Swinney, "A crisis in the Belousov-Zhabotinskii reaction: experiment and simulation", J. Stat. Phys., 977, ?, (1987) M. Boukalouch, J. Elezgaray, A. Arneodo, J. Boissonade, P. De Kepper, "Oscillatory instability induced by mass interchange between two coupled steady-state reactors", J. Phys. Chem., ?, 5843-5845, (1987) J. Boissonade, P. De Kepper, "A comprehensive interpretation of mixing effects on stationary states and dynamical behavior of the bistable ClO2- - I-) reaction in a flow reactor", J. Chem. Phys., 210, , (1987) E. Dulos, P. De Kepper, "Experimental study of synchronization phenomena under periodic light irradiation of a nonlinear chemical system", Biophys. Chem., 18, 211-213 (1983). M. Alamgir, P. De Kepper, M. Orban, I.R. Epstein, "A new type of bromate oscillator: the bromate-iodide reaction in a stirred flow reactor", J. Am. Chem. Soc., 105, 2641-2643 (1983). M. Orban, P. De Kepper, I.R. Epstein, "The minimal bromate oscillator: bromate-bromide-catalyst", J. Am. Chem. Soc., 104, 2657-2658 (1982). P. De Kepper, I.R. Epstein, K. Kustin, M. Orban, "Batch oscillations and spatial wave patterns in chlorite oscillating systems", J. Phys. Chem., 86, 170 (1982). M. Orban, P. De Kepper, I.R. Epstein, "An iodine-free chlorite-based oscillator: The chlorite-thiosulfate reaction in a C.S.T.R", J. Phys. Chem., 86, 431-432 (1982). P. De Kepper, I.R. Epstein, "A mechanistic study of oscillations and bistability in the Briggs-Rauscher reaction", J. Am. Chem. Soc., 104, 49-55 (1982). M. Orban, P. De Kepper, I.R. Epstein, K. Kustin, "New Family of homogeneous chemical oscillators: Chlorite-iodate-substrate", Nature, 292, 816-819 (1981). P. De Kepper, I.R. Epstein, K. Kustin, "A systematically designed homogeneous oscillating reaction: The arsenite-iodatechlorite system", J. Am. Chem. Soc., 103, 2133 (1981). P. De Kepper, J. Boissonade, "Theoretical and experimental analysis of phase diagrams and related dynamical properties in the Belousov-Zhabotinskii system", J. Chem. Phys., 75, 189-195 (1981). J. Boissonade, P. De Kepper, "Transitions from bistability to limit cycle oscillations: Theoretical analysis and experimental evidences in an open chemical system", J. Phys. Chem., 84, 501-506 (1980). E. Dulos, P. De Kepper, A. Marchand, "Entrainement d'une réaction chimique oscillante par des excitations lumineuses périodiques de fréquences variables", C.R. Acad. Sci., 289C, 113-116 (1979). P. De Kepper, A. Pacault, "Les réactions chimiques périodiques : bistabilité et régulation, tristabilité", C.R. Acad. Sci., 286C, 437-441 (1978). A. Pacault, P. De Kepper, P. Hanusse, A. Rossi, "Etude d'une réaction chimique périodique. Diagramme des états", C.R. Acad. Sci., 281C, 215-220 (1975). 
TZ:+0200
END:VCARD
]]></entity>
<date><dateTime>2000-08-24</dateTime></date>
</contribute>
<contribute>
<role>
<source>LOMv1.0</source>
<value>publisher</value>
</role>
<entity><![CDATA[BEGIN:VCARD
VERSION:3.0
CLASS:PUBLIC
REV:2021-09-16 17:09:39
FN:Mission 2000 en France
N:Mission 2000 en France;;;;
URL;TYPE=work:https://www.canal-u.tv/auteurs/mission_2000_en_france
ROLE:publisher
TZ:+0200
END:VCARD
]]></entity>
<date><dateTime>2000-08-24</dateTime></date>
</contribute>
<contribute>
<role>
<source>LOMv1.0</source>
<value>content provider</value>
</role>
<entity><![CDATA[BEGIN:VCARD
VERSION:3.0
CLASS:PUBLIC
REV:2021-09-16 17:09:39
FN:UTLS - la suite
N:UTLS - la suite;;;;
URL;TYPE=work:http://www.canal-u.tv/producteurs/universite_de_tous_les_savoirs
ROLE:content provider
TZ:+0200
END:VCARD
]]></entity>
<date><dateTime>2000-08-24</dateTime></date>
</contribute>
</lifeCycle>
<metaMetadata>
<metadataSchema>LOMv1.0</metadataSchema>
<metadataSchema>LOMFRv1.0</metadataSchema>
</metaMetadata>
<technical>
<format>video/mp4</format>
<location><![CDATA[https://www.canal-u.tv/video/universite_de_tous_les_savoirs/morphogeneses_chimiques_les_reactions_creatrices_de_rythmes_et_de_formes.1089]]></location>
<location><![CDATA[https://streaming-canal-u.fmsh.fr/vod/media/canalu/videos/utls/morphogen.ses.chimiques.les.reactions.creatrices.de.rythmes.et.de.formes_1089/90237_patrickdekepper_sd.mp4]]></location>
<location><![CDATA[https://streaming-canal-u.fmsh.fr/vod/media/canalu/videos/utls/morphogen.ses.chimiques.les.reactions.creatrices.de.rythmes.et.de.formes_1089/90237_patrickdekepper_bd.mp4]]></location>
<size>359472402</size>
<duration><duration>PT1H18M37S</duration></duration>
</technical>
<educational>
<learningResourceType>
<source>LOMv1.0</source>
<value>lecture</value>
</learningResourceType>
<context>
<source>LOMv1.0</source>
<value>higher education</value>
</context>
</educational>
<rights>
<cost>
<source>LOMv1.0</source>
<value>no</value>
</cost>
<copyrightAndOtherRestrictions>
<source>LOMv1.0</source>
<value>no</value>
</copyrightAndOtherRestrictions>
<description>
<string language="fre"><![CDATA[Droits réservés à l'éditeur et aux auteurs. 
]]></string>
</description>
</rights>
<relation>
<kind>
<source>LOMv1.0</source>
<value>ispartof</value>
</kind>
<resource>
<identifier>
<catalog>URI</catalog>
<entry>https://www.canal-u.tv/producteurs/universite_de_tous_les_savoirs/les_conferences_de_l_annee_2000/chimie_minerale</entry>
</identifier>
<description>
<string language="fre"><![CDATA[Chimie minérale]]></string>
</description>
</resource>
</relation>
<classification>
<purpose>
<source>LOMv1.0</source>
<value>discipline</value>
</purpose>
<taxonPath>
<source>
<string language="fre"><![CDATA[Universités Numériques Thématiques 2009 http://www.universites-numeriques.fr]]></string>
</source>
<taxon>
<id/>
<entry>
<string language="fre"/>
</entry>
</taxon>
</taxonPath>
</classification>
<classification>
<purpose>
<source>LOMv1.0</source>
<value>discipline</value>
</purpose>
<taxonPath>
<source>
<string language="fre">CDD 22e éd.</string>
<string language="eng">DDC 22nd ed.</string>
</source>
<taxon>
<id>540</id>
<entry>
<string language="fre"><![CDATA[Chimie et sciences connexes]]></string>
</entry>
</taxon>
</taxonPath>
<taxonPath>
<source>
<string language="fre">CDD 22e éd.</string>
<string language="eng">DDC 22nd ed.</string>
</source>
<taxon>
<id>541.39</id>
<entry>
<string language="fre"><![CDATA[Réactions et synthèses chimiques]]></string>
</entry>
</taxon>
</taxonPath>
<taxonPath>
<source>
<string language="fre">CDD 22e éd.</string>
<string language="eng">DDC 22nd ed.</string>
</source>
<taxon>
<id>660.29</id>
<entry>
<string language="fre"><![CDATA[Chimie physique appliquée]]></string>
</entry>
</taxon>
</taxonPath>
</classification> </lom>