Download or read book Sur la synth se et la structure des supraconducteurs au mercure written by SERGIO.. MARTINS LOUREIRO and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: LA DECOUVERTE RECENTE DE NOUVELLES FAMILLES A BASE DE MERCURE DE CUPRATES SUPRACONDUCTEURS A HAUTE TEMPERATURE CRITIQUE A RELANCE L'INTERET DE LA COMMUNAUTE SCIENTIFIQUE POUR CES COMPOSES. ON PRESENTE ICI UNE ETUDE EXHAUSTIVE DE L'ELABORATION ET DES PROPRIETES STRUCTURALES DES DEUX SERIES, HGBA#2CA#N#-#1CU#NO#2#+#2#N#+#, HG-12(N-1)N ET H#G#2BA#2(R,CA)CU#2O#8#-#, (HG-2212). HG-12(N-1)N LES METHODES DE PREPARATIONS A TRES HAUTE PRESSION ET TEMPERATURE ONT ETE OPTIMISEES, EN PARTICULIER GRACE AU CONTROLE DE LA VALENCE DU CUIVRE DANS LES PRECURSEURS. LES TERMES SUPERIEURS DE LA SERIE ONT ETE PREPARES ET ON A MONTRE QU'ILS RESTAIENT SOUS-DOPES AVEC DES T#C INFERIEURES AU TROISIEME TERME, HG-1223, QUI RESTE LE RECORD ABSOLU DE T#C A 135-K. LES SUBSTITUTIONS DU MERCURE PAR LE CARBONE, OU LE SOUFRE ONT ETE REALISEES. CELLE DU MERCURE PAR LE CUIVRE SEMBLE IMPOSSIBLE SOUS PRESSION. CES RESULTATS SONT COMPARES AVEC CEUX DE LA LITTERATURE ET DISCUTES. ENFIN ON A EXAMINE LES PROPRIETES DES COMPOSES SOUS PRESSION QUI ELEVE LA T#C JUSQU'A 164 K DANS HG-1223. HG-2212 JUSQU'ICI, LES COMPOSES N'ONT JAMAIS ETE PREPARES SANS SUBSTITUTION PARTIELLE DU HG PAR UN AUTRE CATION. UNE NOUVELLE METHODE DE PREPARATION A ETE MISE AU POINT QUI PERMET DE REALISER DES COMPOSE STEOCHIOMETRIQUES. LA ENCORE LE CONTROLE DE LA VALENCE DU CUIVRE DANS LES PRECURSEURS DE LA SYNTHESE SOUS PRESSION S'EST AVEREE DETERMINANT. L'ETUDE DES ECHANTILLONS PAR DIFFRACTION NEUTRONIQUE DONNE UNE NOUVELLE APPROCHE DES MECANISMES STRUCTURAUX DE LA SUPRACONDUCTIVITE DANS CES COMPOSES. LA SUBSTITUTION DE L'YTTRIUM PAR PRESQUE TOUTES LES TERRES RARES A ETE REALISEE. L'ETUDE POUR LA PREMIERE FOIS DES PROPRIETES EN FONCTION DE LA PRESSION A PERMIS D'OBSERVER UN ACCROISSEMENT DE PRESSION RECORD DE 65K. CELUI CI DOIT AVOIR SON ORIGINE DANS UN EFFET INTRINSEQUE STRUCTURAL QU'ON A ETUDIE EN REALISANT DES AFFINEMENTS STRUCTURAUX A PARTIR DE DONNEES DE DIFFRACTION AUX RAYONS-X SYNCHROTRON JUSQU'A 30 GPA ET AUX NEUTRONS JUSQU'A 1 GPA. LES EFFETS MAJEURS SONT LA DIMINUTION DES DISTANCES CU-OAP ET BA-OIP, ET UNE DIMINUTION DE L'ANGLE O-CU-O (AUGMENTATION DE LA CORRUGATION DU PLAN (CUO#2). A PARTIR DE CES OBSERVATIONS ON PROPOSE DES PISTES POUR AUGMENTER T#C A LA PRESSION AMBIANTE. TOUS LES RESULTATS SONT DISCUTES ET COMPARES AUX RESULTATS DE LA LITTERATURE ET L'ENSEMBLE PRESENTE L'ETAT DE L'ART SUR LE SUJET

Download or read book LES CUPRATES SUPRACONDUCTEURS A MONOCOUCHE MIXTE A BASE DE MERCURE OU DE CALCIUM written by SYLVIE.. MALO and published by . This book was released on 1998 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE STRUCTURALE DES CUPRATES DE MERCURE SUBSTITUES (HG/M)BA#2CA#M##1CU#MO#Y (M = 1, 2 ET 3) MONTRE QUE, DANS LE CAS DU VANADIUM ET DU CHROME, L'ELEMENT DE TRANSITION SE TROUVE EN COORDINENCE TETRAEDRIQUE. CETTE SUBSTITUTION NE GENERE PAS DE MISE EN ORDRE A GRANDE DISTANCE AU SEIN DE LA COUCHE MIXTE (HG,M)O. TOUS CES MATERIAUX SONT SUPRACONDUCTEURS. DANS LES CUPRATES SUBSTITUES AU VANADIUM, LA SUBSTITUTION BA/SR PROVOQUE, DANS LE CAS DES 1201 (M = 1), UNE EVOLUTION DES DES CARACTERISTIQUES SUPRACONDUCTRICES. PAR CONTRE, DANS LE CAS DES 1212 (M = 2), CETTE SUBSTITUTION N'ENTRAINE PAS DE VARIATION DE LA TEMPERATURE CRITIQUE (T#C). LES OXYCARBONATES HG#0#,#5M#0#,#5SR#4CU#2(CO#3)O#7 ONT ETE SYNTHETISES POUR M = CR ET MO. LEUR STRUCTURE RESULTE DE L'INTERCROISSANCE DE MOTIFS DE TYPE 1201 ET SR#2CUO#2CO#3. L'ETUDE PAR DIFFRACTION DE NEUTRONS ET PAR MICROSCOPIE ELECTRONIQUE HAUTE RESOLUTION PERMET DE PRECISER L'ARRANGEMENT DES CARBONATES AU SEIN DE CES MATERIAUX (ROTATION DE 90 ENTRE DEUX GROUPEMENTS VOISINS DANS UNE MEME COUCHE) ET LA COORDINENCE TETRAEDRIQUE DE L'ELEMENT DE TRANSITION. LES PROPRIETES SUPRACONDUCTRICES SONT INTERESSANTES PUISQUE LA T#C ATTEIND 74 K DANS LE CAS DU MOLYBDENE. L'ETUDE DES OXYCARBONATES HG#1##YV#YSR#4##XBA#XCU#2(CO#3)O#7## PERMET D'ISOLER, POUR LA PREMIERE FOIS AU SEIN D'UN MEME SYSTEME, LES TROIS TYPES STRUCTURAUX : NON-CISAILLE, CISAILLE (110)#P ET CISAILLE (100)#P. LES COMPOSES CORRESPONDANT AUX TRANSITIONS STRUCTURALES PRESENTENT DES PHENOMENES DE CISAILLEMENT COMPLEXES. TOUS CES COMPOSES SONT SUPRACONDUCTEURS AVEC UNE T#C DIMINUANT LORSQUE LE TAUX DE BARYUM AUGMENTE. ENFIN, L'ETUDE DU SYSTEME BA/CA/CU/O A PERMIS DE DECOUVRIR UNE NOUVELLE FAMILLE DE SUPRACONDUCTEURS CARACTERISES PAR UNE STRUCTURE PROCHE DE CELLE DES 1223 ET UNE T#C SUPERIEURE A 100 K. UNE NOUVELLE PHASE, BA#3#6CA#2CU#3#2O#Y A ETE EGALEMENT ISOLEE, ELLE PRESENTE UNE STRUCTURE ORIGINALE DERIVANT DE LA STRUCTURE BACUO#2#+#X CARACTERISEE PAR UN EMPILEMENT DE TYPE 4H.

Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.

Download or read book Comptes rendus de l Acad mie des sciences written by and published by . This book was released on 1997-07 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NRC Annual Report written by National Research Council Canada and published by . This book was released on 1989 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report written by National Research Council of Canada and published by . This book was released on 1988 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structure and Chemistry of the Apatites and Other Calcium Orthophosphates written by J.C. Elliott and published by Elsevier. This book was released on 2013-10-22 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The apatites and related calcium phosphates have been of considerable interest to biologists, mineralogists, and inorganic and industrial chemists for many years. This book contains a detailed description of the structures and structural interrelationships of the calcium orthophosphates, including the apatites. Their preparation, crystal growth and dissolution, chemical reactions including thermal decomposition, IR, Raman and NMR spectra and various physical properties are discussed. Apatites other than those containing calcium and phosphorus are included. Synthetic, mineral and biological carbonate apatites are also considered. A wide, but critical coverage of the literature is given, which includes a substantial amount not written in English. Research from many disciplines is included which results in a comprehensive compilation of recent work.

Download or read book Applied Reactor Physics written by Alain Hébert and published by Presses inter Polytechnique. This book was released on 2009 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Renal Stone Disease written by Andrew P. Evan and published by American Institute of Physics. This book was released on 2007-04-13 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains peer-reviewed papers that were presented at the 1st Annual International Urolithiasis Research Symposium, held in Indianapolis, Indiana, in November 2006. This conference featured a very distinguished international faculty whose present research is clearly advancing the field of stone disease. This conference marked the first presentation of data on the interface between a renal stone and its tissue attachment site.

Download or read book Nuclear Computational Science written by Yousry Azmy and published by Springer Science & Business Media. This book was released on 2010-04-15 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear engineering has undergone extensive progress over the years. In the past century, colossal developments have been made and with specific reference to the mathematical theory and computational science underlying this discipline, advances in areas such as high-order discretization methods, Krylov Methods and Iteration Acceleration have steadily grown. Nuclear Computational Science: A Century in Review addresses these topics and many more; topics which hold special ties to the first half of the century, and topics focused around the unique combination of nuclear engineering, computational science and mathematical theory. Comprising eight chapters, Nuclear Computational Science: A Century in Review incorporates a number of carefully selected issues representing a variety of problems, providing the reader with a wealth of information in both a clear and concise manner. The comprehensive nature of the coverage and the stature of the contributing authors combine to make this a unique landmark publication. Targeting the medium to advanced level academic, this book will appeal to researchers and students with an interest in the progression of mathematical theory and its application to nuclear computational science.

Download or read book The Physics of Nuclear Reactors written by Serge Marguet and published by Springer. This book was released on 2018-02-26 with total page 1462 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive volume offers readers a progressive and highly detailed introduction to the complex behavior of neutrons in general, and in the context of nuclear power generation. A compendium and handbook for nuclear engineers, a source of teaching material for academic lecturers as well as a graduate text for advanced students and other non-experts wishing to enter this field, it is based on the author’s teaching and research experience and his recognized expertise in nuclear safety. After recapping a number of points in nuclear physics, placing the theoretical notions in their historical context, the book successively reveals the latest quantitative theories concerning: • The slowing-down of neutrons in matter • The charged particles and electromagnetic rays • The calculation scheme, especially the simplification hypothesis • The concept of criticality based on chain reactions • The theory of homogeneous and heterogeneous reactors • The problem of self-shielding • The theory of the nuclear reflector, a subject largely ignored in literature • The computational methods in transport and diffusion theories Complemented by more than 400 bibliographical references, some of which are commented and annotated, and augmented by an appendix on the history of reactor physics at EDF (Electricité De France), this book is the most comprehensive and up-to-date introduction to and reference resource in neutronics and reactor theory.

Download or read book Iran s Strategic Intentions and Capabilities written by Patrick Clawson and published by International Law & Taxation Pub. This book was released on 2004-12-01 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: CONTENTS: Introduction Domestic Politics and Strategic Intentions Iran's Foreign Policy and Internal Crisis --- Alternative Foreign Policy Views among the Iranian Policy Elite --- All Politics Is Local Russia and Iran Evolving Russian Attitudes Towards Iran --- Russian Military Strategy on Iran's Border Iran's Military Intentions and Capabilities Iran's Strategic Aims and Constraint --- Deja Vu All over Again? An Assessment of Iran's Military Buildup --- Iran's Military Situation Abbreviations Used About the Authors

Download or read book Cambridge Yearbook of European Legal Studies Vol 13 2010 2011 written by Catherine Barnard and published by Bloomsbury Publishing. This book was released on 2011-12-15 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cambridge Yearbook of European Legal Studies provides a forum for the scrutiny of significant issues in EU Law, the law of the European Convention on Human Rights, and Comparative Law with a 'European' dimension, and particularly those issues which have come to the fore during the year preceding publication. The contributions appearing in the collection are commissioned by the Centre for European Legal Studies (CELS) Cambridge, a research centre in the Law Faculty of the University of Cambridge specialising in European legal issues. The papers presented are at the cutting edge of the fields which they address, and reflect the views of recognised experts drawn from the University world, legal practice, and the institutions of both the EU and its Member States. Inclusion of the comparative dimension brings a fresh perspective to the study of European law, and highlights the effects of globalisation of the law more generally, and the resulting cross fertilisation of norms and ideas that has occurred among previously sovereign and separate legal orders. The Cambridge Yearbook of European Legal Studies is an invaluable resource for those wishing to keep pace with legal developments in the fast moving world of European integration. INDIVIDUAL CHAPTERS Please click on the link below to purchase individual chapters from Volume 13 through Ingenta Connect: www.ingentaconnect.com SUBSCRIPTION TO SERIES To place an annual online subscription or a print standing order through Hart Publishing please click on the link below. Please note that any customers who have a standing order for the printed volumes will now be entitled to free online access. www.hartjournals.co.uk/cyels/subs Editorial Advisory Board: Albertina Albors-Llorens, John Bell, Alan Dashwood, Simon Deakin, David Feldman, Richard Fentiman, Angus Johnston, John Spencer Founding Editors: Alan Dashwood and Angela Ward Ius Commune Prize 2012 Alexandre Saydé wrote Chapter 15 in this volume entitled: 'One Law, Two Competitions: An Enquiry into the Contradictions of Free Movement Law' and we are delighted to announce that he has been awarded the Ius Commune Prize 2012.

Download or read book Microscopic Simulation of Interfacial Phenomena in Solids and Liquids Volume 492 written by Simon R. Philllpot and published by . This book was released on 1998-04-24 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.

Download or read book Unidentified written by Robert Salas and published by Career Press. This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1969 the U.S. Air Force issued a statement that read' "No UFO reported, investigated and evaluated by the Air Force was ever an indication of threat to our national security." This statement is patently false. It has been proven untrue by the testimony of many military officers and airmen and documentation of incidents involving UFOs and nuclear weapons, testimonies of which the U.S. Air Force was fully aware. Unidentified details many of these testimonies, some for the first time. As partial justification for its position, the Air Force cites a University of Colorado study that was contracted and paid for by federal funds. Unidentified reveals how this study was actually just another part of the plan to cover up the reality of the UFO phenomenon. For the first time, Unidentified publishes evidence that the investigators for the Colorado study knew about the UFO-related missile shutdown incidents but did not investigate them or include them in their final report.