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Etude Des Transitions De Phases De Fluides Confines Dans Le Silicium Poreux
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Book Synopsis ETUDE DES TRANSITIONS DE PHASES DE FLUIDES CONFINES DANS LE SILICIUM POREUX by : CENDRINE.. FAIVRE
Download or read book ETUDE DES TRANSITIONS DE PHASES DE FLUIDES CONFINES DANS LE SILICIUM POREUX written by CENDRINE.. FAIVRE and published by . This book was released on 1998 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA PROPRIETE ORIGINALE DU SILICIUM POREUX D'ETRE A LA FOIS NANOPOREUX ET MONOCRISTALLIN NOUS A PERMIS D'OBTENIR DES INFORMATIONS NOUVELLES EN UTILISANT LA DIFFRACTION DES RAYONS X. LES RESULTATS CONCERNENT L'ETUDE STRUCTURALE DES COUCHES DE TYPE P#+ FORMEES SUR UN SUBSTRAT ORIENTE (111), LA MESURE DU COEFFICIENT DE DILATATION THERMIQUE DU SILICIUM POREUX ET LES DEFORMATIONS INDUITES PAR LA PRESENCE DE CDS DANS LES PORES. LA DEUXIEME MOTIVATION DE CETTE THESE CONCERNAIT L'ETUDE PLUS FONDAMENTALE DES CHANGEMENTS DE PHASES DE FLUIDES CONFINES DANS LE SILICIUM POREUX. DU POINT DE VUE DU FLUIDE, LA CALORIMETRIE DIFFERENTIELLE A ETE UTILISEE POUR MESURER LES DECALAGES EN TEMPERATURE DES TRANSITIONS DE PHASES, LIES AUX EFFETS DE CONFINEMENT. UN MODELE DECRIVANT LES MECANISMES THERMODYNAMIQUES DE LA TRANSITION CONFINEE ET TENANT COMPTE DE LA GEOMETRIE DES PORES, A PERMIS DE BIEN DECRIRE LES RESULTATS EXPERIMENTAUX ET DE DEDUIRE LA DISTRIBUTION DE TAILLES DES PORES. CE TRAVAIL A PU ETRE APPLIQUE A DIFFERENTS EFFETS TELS QUE LA DISSOLUTION CHIMIQUE OU L'HOMOGENEITE DES COUCHES. DU POINT DE VUE DE LA MATRICE POREUSE, LES DEFORMATIONS INDUITES PAR LES TRANSITIONS LIQUIDE-VAPEUR ET SOLIDE-LIQUIDE DU FLUIDE CONFINE ONT ETE MESUREES IN SITU PAR DIFFRACTION DES RAYONS X. DANS LE CAS DE L'ADSORPTION, LA VALEUR DE LA PRESSION DE VAPEUR CORRESPONDANT A UNE AMPLITUDE DE DEFORMATION MAXIMALE A ETE MESUREE ET RELIEE A LA TAILLE DES PORES PAR L'EQUATION DE KELVIN. EN CONSIDERANT LES PROPRIETES ELASTIQUES DU SILICIUM POREUX, LES CONTRAINTES CAPILLAIRES INDUITES PAR LA PRESENCE DE MENISQUES DANS LES PORES ONT ETE ESTIMEES LORS DE L'EVAPORATION, ET LES RESULTATS ONT PU ETRE APPLIQUES AU PROBLEME DU SECHAGE DE COUCHES TRES POREUSES. D'AUTRE PART, LA CONSTRUCTION AU COURS DE MA THESE D'UN NOUVEAU DIFFRACTOMETRE A PERMIS DE MESURER IN SITU DES DEFORMATIONS DE LA COUCHE POREUSE LORS DE LA SOLIDIFICATION DU FLUIDE ORGANIQUE AU SEIN DES PORES, LIEES A L'EXISTENCE DE CONTRAINTES CAPILLAIRES.
Book Synopsis SYNTHESE DE SILICIURES by : NADINE.. MALHOUROUX-GAFFET
Download or read book SYNTHESE DE SILICIURES written by NADINE.. MALHOUROUX-GAFFET and published by . This book was released on 1993 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA CROISSANCE DES SILICIURES SUR SILICIUM A FAIT L'OBJET DE NOMBREUSES ETUDES MOTIVEES PAR LE CARACTERE METALLIQUE ET LA BONNE STABILITE EN TEMPERATURE DE CES MATERIAUX. DEPUIS QUELQUES ANNEES LES SILICIURES OUBLIES JUSQU'ALORS PRESENTANT DES PROPRIETES DIFFERENTES SONT AUSSI ETUDIES. C'EST LE CAS DU DISILICIURE DE FER DONT LA PHASE BASSE TEMPERATURE (BETA) SERAIT SEMICONDUCTRICE A GAP DIRECT. LES TRAVAUX DE CETTE THESE ONT CONSISTE A FORMER DU DISILICIURE DE FER PAR REACTION A L'ETAT SOLIDE DANS DES COUCHES MINCES ET DANS DES POUDRES FE+2SI BROYEES. POUR CELA DIFFERENTES ETUDES DE DIFFRACTION AUX RAYONS X, DE MET, DE MEB, DE MICROSCOPIE A FORCE ATOMIQUE, PROFILOMETRIE ET DE PHOTOLUMINESCENCE ONT ETE EFFECTUEES. LE PREMIER CHAPITRE EST UNE ETUDE BIBLIOGRAPHIQUE DES DIFFERENTS TRAVAUX PORTANT SUR LES SILICIURES SUIVIE D'UNE ANALYSE DES PARAMETRES PERTINENTS GOUVERNANT LA FORMATION DE CES MATERIAUX. LE SECOND CHAPITRE EST CONSACRE A L'ETUDE DES REACTIONS DE FILMS MINCES DE FER ET DE SILICIUM SUR UN SUBSTRAT MONOCRISTALLIN DE SILICIUM. LES RESULTATS MONTRENT L'OBTENTION DE LA PHASE HAUTE TEMPERATURE INATTENDUE A LA TEMPERATURE DE TRAVAIL UTILISEE ET LA FORMATION DE LA PHASE BASSE TEMPERATURE PAR DEUX MODES DIFFERENTS: UNE CROISSANCE CLASSIQUE AVEC UNE MORPHOLOGIE DE SURFACE FACETTEE ET UNE CROISSANCE EXPLOSIVE REVELANT DES CERCLES CONCENTRIQUES EN SURFACE. LE TROISIEME CHAPITRE TRAITE DE LA FORMATION DE SILICIURE DE FER PAR MECANO-SYNTHESE REACTIVE QUI CONSISTE A RECUIRE DES POUDRES FE+2SI PREALABLEMENT BROYEES. CETTE TECHNIQUE QUI PERMET D'EXPLOITER DES PARAMETRES NON ETUDIES AVEC LA METHODE PRECEDENTE NOUS PERMET D'ETABLIR UN SCHEMA REACTIONNEL ABOUTISSANT A LA SYNTHESE DE BETA FESI#2 ET DE METTRE EN EVIDENCE LE ROLE DE L'ETAT INITIAL DES GRAINS DE FER. A TRAVERS LES RESULTATS OBTENUS DANS CE DERNIER CHAPITRE, LA MECANO-SYNTHESE APPARAIT COMME ETANT UNE TECHNIQUE TRES PROMETTEUSE CAR ELLE PERMET D'ABAISSER LA TEMPERATURE D'ELABORATION DES MATERIAUX ET DE FORMER DES PHASES METASTABLES
Book Synopsis Physique des transitions de phases by : Pierre Papon
Download or read book Physique des transitions de phases written by Pierre Papon and published by . This book was released on 1999 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: La physique des transitions de phases est un domaine important à la frontière de plusieurs disciplines et elle joue un rôle central en sciences des matériaux. Cet ouvrage, destiné aux étudiants de maîtrise, de DEA et des écoles d'ingénieurs, traite en onze chapitres des grandes classes de transitions de phases dans les fluides et les solides : vaporisation, fusion, solidification, transitions magnétiques, phénomènes critiques, supraconductivité... Les deux premiers chapitres sont une description générale des phénomènes, chacun des six chapitres suivants aborde l'étude d'une transition spécifique, en explicitant les caractéristiques, les méthodes expérimentales pour l'étudier, les principaux modèles théoriques qui permettent de la prévoir ainsi que ses applications. Les trois derniers chapitres sont consacrés au rôle des microstructures et des nanostructures, aux transitions dans les films minces et aux phénomènes de transitions de phases dans les grands systèmes naturels et techniques. A la fin de chaque chapitre sont proposés des exercices, dont les solutions se trouvent en fin d'ouvrage, ainsi qu'une bibliographie de base.
Book Synopsis Caractérisations physicochimiques de silices mésoporeuses fonctionnalisées du type SBA-15 by : Nadia Fekkar-Nemmiche
Download or read book Caractérisations physicochimiques de silices mésoporeuses fonctionnalisées du type SBA-15 written by Nadia Fekkar-Nemmiche and published by . This book was released on 2009 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail est consacré à l'étude des propriétés physico-chimiques de silices mésoporeuses fonctionnalisées du type SBA-15. Il a consisté à caractériser i) la structure mésoporeuse par DRX et par isothermes d'adsorption d'azote, ii) les états de surface de la silice par RMN lorsqu'on passe d'une fonction propyle à une chaîne -CH2-CH2-CH2-PO(OX)2 où X=Et, H, Li, Na et K, iii) les propriétés de confinement de trois adsorbats (eau, 1-pentanol et n-heptane) par analyses thermiques et iv) les propriétés de conduction ionique par spectroscopie d'impédance complexe. L'examen de la microstructure par RMN du solide a permis de mettre en évidence que la substitution des silanols de surface des pores des silices étudiées par des groupements tétraméthylsilyles (-Si(CH3)3) n'était pas totale. Les analyses par DSC des silices exposées la vapeur saturante d'eau, de 1-pentanol ou de n-heptane ont révélé que les températures de transitions de phase du fluide confiné dans les pores sont modifiées par rapport à celles du fluide en volume étendu. Ceci est dû à l'effet combiné d'une dimension réduite et de l'interface fluide–mur, siège d'interactions spécifiques liées à la nature (polaire ou apolaire) des groupements introduits à la surface des pores. En présence d'eau confinée, les analyses RMN ont montré que celle-ci conserve sa coordination tétraédrique et que la mobilité des chaînes à la surface des pores augmente. L'étude de la conductivité par SIC des silices soumises à la vapeur saturante d'eau, de 1-pentanol ou de n-heptane indique que tous les solides étudiés sont des isolants tant qu'il n'y a pas de phase adsorbée. Lorsqu'une conductivité apparait, elle est de type ionique
Book Synopsis Dictionary of Building and Civil Engineering by : Don Montague
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Book Synopsis Adhesion between polymers and concrete / Adhésion entre polymères et béton by : H. R. Sasse
Download or read book Adhesion between polymers and concrete / Adhésion entre polymères et béton written by H. R. Sasse and published by Springer. This book was released on 2013-11-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preface Adhesion is a phenomenon architects and civil engineers are not very familiar with. In other disciplines knowledge about surface properties and the background of bonding energies is also far from satisfactory; nevertheless there are many important· applications in concrete engineering, where adhesion is necessary for success and durability. These include: - coating and painting - repair of concrete surfaces - bonding of fresh to old concrete - crack injection - glueing of precast elements - glueing of steel to concrete, etc. In 1981 RILEM established the technical committee 52-RAC 'Resin Adherence to Concrete'. The main aims of the committee's work were - to collect research results and practical experiences - to initiate and coordinate research programs - to develop, on a scientific base, test methods for field and for laboratory purposes. One of the results of the committee's work is a state-of-the-art report, which will be presented orally as a General Report at the International Symposium ISAP '86, and will be printed either in the RILEM journal Materials and Structures or separately. Several test recommendations have been elaborated and will be prepared as drafts for the participants ofISAP '86. These are: - direct tensile test - pull-off test - direct shear test - slant shear test - four-point bending test - dynamic loading test - thermal compatibility test (two versions) - injectibility test.
Book Synopsis Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit by : Stuart Hill
Download or read book Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit written by Stuart Hill and published by Birkhäuser. This book was released on 2013-12-14 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1985-11 with total page 1196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals of Latex Film Formation by : Joseph Keddie
Download or read book Fundamentals of Latex Film Formation written by Joseph Keddie and published by Springer Science & Business Media. This book was released on 2010-02-18 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has emerged out of our long-time research interests on the topic of latex film formation. Over the years we have built up a repertoire of slides used in conference presentations, short courses and tutorials on the topic. The story presented in this book has thereby taken shape as it has been told and re-told to a mix of academic and industrial audiences. The book presents a wide body of work accumulated by the polymer colloids community over the past five decades, but the selection of examples has been flavoured by our particular experimental interests and development of mathematical models. We intend the book to be a starting point for academic and industrial scientists beginning research on latex film formation. The emphasis is on fundam- tal mechanisms, however, and not on applications nor on specific effects of formu- tions. We hope that the book consolidates the understanding that has been achieved to-date in the literature in a more comprehensive way than is possible in a review article. We trust that the reader will appreciate the fascination of the topic.
Book Synopsis Cellular Automata Modeling of Physical Systems by : Bastien Chopard
Download or read book Cellular Automata Modeling of Physical Systems written by Bastien Chopard and published by Cambridge University Press. This book was released on 2005-06-30 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a self-contained introduction to cellular automata and lattice Boltzmann techniques. Beginning with a chapter introducing the basic concepts of this developing field, a second chapter describes methods used in cellular automata modeling. Following chapters discuss the statistical mechanics of lattice gases, diffusion phenomena, reaction-diffusion processes and non-equilibrium phase transitions. A final chapter looks at other models and applications, such as wave propagation and multiparticle fluids. With a pedagogic approach, the volume focuses on the use of cellular automata in the framework of equilibrium and non-equilibrium statistical physics. It also emphasises application-oriented problems such as fluid dynamics and pattern formation. The book contains many examples and problems. A glossary and a detailed bibliography are also included. This will be a valuable book for graduate students and researchers working in statistical physics, solid state physics, chemical physics and computer science.
Author :International Atomic Energy Agency Publisher :International Atomic Energy Agency ISBN 13 :9789201063205 Total Pages :72 pages Book Rating :4.0/5 (632 download)
Book Synopsis In-Vessel Melt Retention and Ex-Vessel Corium Cooling: IAEA Tecdoc No. 1906 by : International Atomic Energy Agency
Download or read book In-Vessel Melt Retention and Ex-Vessel Corium Cooling: IAEA Tecdoc No. 1906 written by International Atomic Energy Agency and published by International Atomic Energy Agency. This book was released on 2020-08-06 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication results from a technical meeting on phenomenology and technologies relevant to in-vessel melt retention (IVMR) and ex-vessel corium cooling (EVCC). The purpose of the publication is to capture the state of knowledge, at the time of that meeting, related to phenomenology and technologies as well as the challenges and pending issues relevant to IVMR and EVCC for water cooled reactors by summarizing the information provided by the meeting participants in a form useful to practitioners in Member States.
Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka
Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.
Download or read book Explosives written by Josef Köhler and published by Wiley-VCH. This book was released on 1992-11-27 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: This highly acclaimed reference work has set worldwide standards in the field of explosives and propellant materials for the past 60 years. Now in its 4th revised English Edition it describes 120 explosive substances with their formulae, performance, sensitivity characteristics and trade names. Instructions and tables for the calculation of thermodynamic data are also included. A special feature is the short dictionary of explosive characteristics in six languages: English, German, French, Spanish, Russian and Czechoslovakian. From reviews on the 3rd English Edition: 'This wealth of information and an index that comprises some 2500 key-words and several conversion tables make this book a unique source of knowledge for anybody working with explosives.' Propellants, Explosives, Pyrotechnics. 'The objective of the book is to provide fundamental information on the subject of explosives not only to experts but also to the general public. The book will therefore, apart from industrial companies and research facilities concerned, be found useful in documentary centers, translation bureaus, editorial offices, patent and lawyer offices, and other institutions of this nature.' Mining Engineering
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9789251055212 Total Pages :116 pages Book Rating :4.0/5 (552 download)
Book Synopsis Guidelines for Soil Description by : Food and Agriculture Organization of the United Nations
Download or read book Guidelines for Soil Description written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2006 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils are affected by human activities, such as industrial, municipal and agriculture, that often result in soil degradation and loss. In order to prevent soil degradation and to rehabilitate the potentials of degraded soils, reliable soil data are the most important prerequisites for the design of appropriate land-use systems and soil management practices as well as for a better understanding of the environment. The availability of reliable information on soil morphology and other characteristics obtained through examination and description of the soil in the field is essential, and the use of a common language is of prime importance. These guidelines, based on the latest internationally accepted systems and classifications, provide a complete procedure for soil description and for collecting field data. To help beginners, some explanatory notes are included as well as keys based on simple test and observations.--Publisher's description.
Book Synopsis Satellite Situation Report by : Goddard Space Flight Center. Office of Public Affairs
Download or read book Satellite Situation Report written by Goddard Space Flight Center. Office of Public Affairs and published by . This book was released on 1977 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diffusion in Materials - DIMAT 2011 by : Igor Bezverkhyy
Download or read book Diffusion in Materials - DIMAT 2011 written by Igor Bezverkhyy and published by Trans Tech Publications Ltd. This book was released on 2012-04-12 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Conference on Diffusion in Materials (DIMAT) is the benchmark conference series for diffusion in solids. DIMAT 2011 was organized by the University of Bourgogne in association with CNRS, Dijon (France). The conference showcased new results concerning theoretical tools as well as applied research approaches. Diffusion processes affect all types of materials: nanomaterials, materials for energy, metallurgy, glasses and ceramics, but each requires its own numerical tools. Volume is indexed by Thomson Reuters CPCI-S (WoS). This volume comprises most of the contributions presented at DIMAT 2011: 4 plenary lectures delivered by famous high-level scientists plus 88 contributions in the form of keynote lectures, talks and posters.
Book Synopsis Encyclopedia of Explosives and Related Items by :
Download or read book Encyclopedia of Explosives and Related Items written by and published by . This book was released on 1960 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
