Download or read book ALIGNEMENT ET ORIENTATION DANS LES PROCESSUS DE TRANSFERT DE CHARGE INDUITS PAR COLLISION written by JAN.. THOMSEN and published by . This book was released on 1995 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE TRAVAIL PRESENTE DANS CETTE THESE EST UNE ETUDE EXPERIMENTALE DES PROCESSUS D'ECHANGE DE CHARGE INDUITS PAR COLLISION ENTRE UN ION SIMPLEMENT CHARGE H#+, H#2#+, HE#+, LI#+ ET UNE CIBLE DE SODIUM NA(3P) EXCITEE PAR IRRADIATION LASER. ON S'INTERESSE EN PARTICULIER A L'INFLUENCE DE L'ALIGNEMENT ET DE L'ORIENTATION INITIALE DE LA CIBLE SUR LES SECTIONS EFFICACES DE TRANSFERT DE CHARGE. DANS UNE PREMIERE PARTIE REALISEE A L'UNIVERSITE DE COPENHAGUE, ON ETUDIE LE ROLE DE L'ALIGNEMENT INITIAL DE LA CIBLE PARALLELE OU PERPENDICULAIRE A LA VITESSE DE COLLISION SUR LES SECTIONS EFFICACES TOTALES DE TRANSFERT DE CHARGE. LE DOMAINE ETENDU DES ENERGIES DE COLLISION DE 1 A 20 KEV CORRESPOND A DES VITESSES EN DECA ET AU DELA DE LA VITESSE ORBITALE CARACTERISTIQUE DE L'ELECTRON NA(3P). L'EFFET D'ANISOTROPIE MESURE EST IMPORTANT POUR L'ENSEMBLE DES SYSTEMES ETUDIES ET PRESENTE UNE SIMILARITE DANS LA DEPENDANCE EN VITESSE DE COLLISION QUI SUGGERE UNE LOI D'ECHELLE. DANS LA DEUXIEME PARTIE DE LA THESE REALISEE AU LCAM A ORSAY, ON ANALYSE LE DIAGRAMME BIDIMENSIONNEL DE DIFFUSION DES NEUTRES ISSUS DE LA COLLISION. POUR LA COLLISION LI#+-NA(3P) A 1 KEV, ETUDIEE POUR UN ENSEMBLE COMPLET DE POLARISATIONS DE LA CIBLE ALIGNEE OU ORIENTEE, LES SECTIONS EFFICACES DIFFERENTIELLES ASSOCIEES AUX DIFFERENTES VOIES DE SORTIE IDENTIFIEES PAR SPECTROSCOPIE DE TEMPS DE VOL PRESENTENT DES ASYMETRIES REMARQUABLES. L'ETAT FINAL LI(2P) PRODUIT DANS LA COLLISION LI#+-NA(3S) EST COMPLETEMENT DETERMINE PAR L'ANALYSE DU DIAGRAMME DE DIFFUSION DES NEUTRES DETECTES EN COINCIDENCE AVEC UN PHOTON DE DECLIN DE POLARISATION DONNEE. CES RESULTATS SONT COMPARES A DES CALCULS SEMI-CLASSIQUES RECENTS ET CONSTITUENT UN TEST TRES SENSIBLE DES MODELES THEORIQUES. LES RESULTATS PRELIMINAIRES OBTENUS DANS L'ETUDE DU TRANSFERT DE CHARGE PP MONTRENT LA FAISABILITE D'UNE EXPERIENCE COMPLETE D'ETAT A ETAT QUI SERA LA PREMIERE DE CE TYPE
Download or read book ETUDE PAR LA THEORIE CLASSIQUE ET QUANTIQUE DE L ALIGNEMENT ET DE L ORIENTATION DANS LES PROCESSUS D ECHANGE DE CHARGE written by ELSA.. LEWARTOWSKI and published by . This book was released on 1993 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: ON REALISE UNE ETUDE THEORIQUE DES PROCESSUS DE TRANSFERT DE CHARGE AUX ENERGIES MODEREES (QUELQUES KEV) DANS LES COLLISIONS PROTON (OU LITHIUM UNE FOIS IONISE)-ATOME DE SODIUM 3P ORIENTE OU ALIGNE. POUR DECRIRE CES COLLISIONS DEUX METHODES SONT EMPLOYEES: LA METHODE DE MONTE-CARLO DES TRAJECTOIRES ET LA METHODE SEMI-CLASSIQUE AVEC UNE BASE MOLECULAIRE. LE CALCUL CLASSIQUE PEUT REPRESENTER L'EFFET DU VELOCITY MATCHING OBSERVE EXPERIMENTALEMENT ET THEORIQUEMENT. L'ELECTRON EST TRANSFERE PREFERENTIELLEMENT LORSQUE SA VITESSE EST PARALLELE A LA VITESSE DE L'ION INCIDENT: PHENOMENE D'ORIENTATION. A L'AIDE DE LA METHODE SEMI-CLASSIQUE ON MONTRE EN PLUS QUE LA PROBABILITE DE TRANSFERT DEPEND DE LA SYMETRIE INITIALE DE L'ORBITALE 3P. LA CAPTURE VERS H(N=2) OU LI(N=2) EST FAVORISEE LORSQUE L'ORBITALE ELECTRONIQUE EST ALIGNEE PARALLELEMENT A LA VITESSE DE L'ION INCIDENT: PHENOMENE D'ALIGNEMENT. GRACE A UNE VISUALISATION DES COURANTS ET DES DENSITES DES FONCTIONS D'ONDE ELECTRONIQUE ON A PROUVE QUE LES PHENOMENES D'ORIENTATION EXPLIQUENT LES EFFETS D'ALIGNEMENT DANS LA REGION DE TRANSFERT. LES SECTIONS DIFFERENTIELLES PERMETTENT DE METTRE EN EVIDENCE LES REMARQUABLES EFFETS D'ANISOTROPIE DANS LA DIFFUSION A PARTIR DES ETATS ALIGNES A 45 DEGRES OU 45 DEGRES ET ORIENTES A +1 OU 1. UN MODELE A 3 ETATS (DANS LE CAS DU SYSTEME DE COLLISION NAH#+) OU A 4 ETATS (SYSTEME DE COLLISION LINA#+) PERMET DE REPRODUIRE L'EFFET D'ORIENTATION AUX LARGES PARAMETRES D'IMPACT. L'ETUDE DE LA POLARISATION DE L'ETAT FINAL MONTRE QUE LE CALCUL SEMBLE CONFIRMER LES REGLES DE PROPENSION AUX ENERGIES CONSIDEREES. NOUS AVONS AUSSI ANALYSE LE ROLE PRIMORDIAL DU FACTEUR DE TRANSLATION COMMUN DANS LE CALCUL DES PROBABILITES ET DES SECTIONS DIFFERENTIELLES METTANT EN JEU DES ATOMES POLARISES
Download or read book INIS Atomindex written by and published by . This book was released on 1987 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CIAMDA 80 written by International Atomic Energy Agency and published by . This book was released on 1980 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book OECD Due Diligence Guidance for Meaningful Stakeholder Engagement in the Extractive Sector written by Collectif and published by OECD. This book was released on 2017-02-02 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Companies can contribute to positive social and economic development when they involve stakeholders, such as local communities, in their planning and decision making. This is particularly true in the extractive sector, which is associated with extensive social, economic and environmental impacts. The OECD has prepared a Due Diligence Guidance for Meaningful Stakeholder Engagement in the Extractive Sector intended to provide practical guidance to mining, oil and gas enterprises in addressing the challenges related to stakeholder engagement. This guide is part of the work the OECD undertakes to create practical sectoral applications for the recommendations found in the OECD Guidelines for Multinational Enterprises. Find out more about OECD work on stakeholder engagement in the extractive sector please see: https://mneguidelines.oecd.org/stakeholder-engagement-extractive-industries.htm.
Download or read book An Introduction to Differential Manifolds written by Jacques Lafontaine and published by Springer. This book was released on 2015-07-29 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an introduction to differential manifolds. It gives solid preliminaries for more advanced topics: Riemannian manifolds, differential topology, Lie theory. It presupposes little background: the reader is only expected to master basic differential calculus, and a little point-set topology. The book covers the main topics of differential geometry: manifolds, tangent space, vector fields, differential forms, Lie groups, and a few more sophisticated topics such as de Rham cohomology, degree theory and the Gauss-Bonnet theorem for surfaces. Its ambition is to give solid foundations. In particular, the introduction of “abstract” notions such as manifolds or differential forms is motivated via questions and examples from mathematics or theoretical physics. More than 150 exercises, some of them easy and classical, some others more sophisticated, will help the beginner as well as the more expert reader. Solutions are provided for most of them. The book should be of interest to various readers: undergraduate and graduate students for a first contact to differential manifolds, mathematicians from other fields and physicists who wish to acquire some feeling about this beautiful theory. The original French text Introduction aux variétés différentielles has been a best-seller in its category in France for many years. Jacques Lafontaine was successively assistant Professor at Paris Diderot University and Professor at the University of Montpellier, where he is presently emeritus. His main research interests are Riemannian and pseudo-Riemannian geometry, including some aspects of mathematical relativity. Besides his personal research articles, he was involved in several textbooks and research monographs.
Download or read book Aeronomy written by P. M. Banks and published by Elsevier. This book was released on 2013-09-24 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aeronomy, Part A is an attempt to make a comprehensive exposition of the processes in aeronomy, the study of composition, movement, and thermal balance of the upper regions of the planetary atmosphere. The text covers topics such as atmospheric regions and atmospheric density, the temperature and molecular mass of the atmosphere; the permanent constituents and the molecular and isotonic composition of the homosphere; and the transition from the homosphere to the heterosphere. Also covered are topics such as the temperature gradient and energies in the thermosphere, conditions at 200km and above 250km, solar radiation and ionization, and aeronomic reactions. The book is recommended for scientists, especially natural physicists, who would like to know more about the field of aeronomy and its advances.
Download or read book Biomimicry written by Janine M. Benyus and published by Harper Collins. This book was released on 2009-08-11 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Repackaged with a new afterword, this "valuable and entertaining" (New York Times Book Review) book explores how scientists are adapting nature's best ideas to solve tough 21st century problems. Biomimicry is rapidly transforming life on earth. Biomimics study nature's most successful ideas over the past 3.5 million years, and adapt them for human use. The results are revolutionizing how materials are invented and how we compute, heal ourselves, repair the environment, and feed the world. Janine Benyus takes readers into the lab and in the field with maverick thinkers as they: discover miracle drugs by watching what chimps eat when they're sick; learn how to create by watching spiders weave fibers; harness energy by examining how a leaf converts sunlight into fuel in trillionths of a second; and many more examples. Composed of stories of vision and invention, personalities and pipe dreams, Biomimicry is must reading for anyone interested in the shape of our future.
Download or read book Organizational Decision Making written by Zur Shapira and published by Cambridge University Press. This book was released on 2002-03-25 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores decision making in organizations, highlighting the roles of incentive, conflict, power and politics.
Download or read book Critical Technologies Plan written by and published by . This book was released on 1989 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Minimum competence in scientific English written by Sue Blattes and published by L'Editeur : EDP Sciences. This book was released on 2003 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cet ouvrage, devenu célèbre sous son sigle MCSE, a déjà été utilisé par plus de 50 000 étudiants, chercheurs, professionnels. L'objectif est de lire et écrire des textes en anglais scientifique avec facilité et pertinence. L'ouvrage est conçu pour que l'apprenant devienne un véritable utilisateur de l'anglais. La méthode originale repose sur l'analyse des fonctions et structures nécessaires : measurement, frequency, comparison, modification, link words, time, cause and consequence, hypothesis, modality, purpose and process, impersonal forms, compound nouns and adjectives. Dans chaque unit, des tests d'auto-évaluation permettent de se situer et de construire son parcours de formation, d'abord en définissant ses objectifs à l'aide des key points et du lexis, puis, de façon plus personnalisée, en puisant dans les examples in context, checkpoints (back to basics, word web), web search, FAQs... MCSE est l'outil de base d'une méthode qui comprend aussi d'autres outils dans la même collection (Listening Comprehension for Scientiflc English et Speaking Skills in Scientitic English). L'ouvrage est destiné à tout apprenant de niveau baccalauréat qui désire acquérir une réelle compétence dans l'écriture et la lecture de textes en anglais scientifique.
Download or read book Proceedings of the Symposium written by United States. Navy Symposium on Military Oceanography and published by . This book was released on with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook for Integrating Risk Analysis in the Economic Analysis of Projects written by Asian Development Bank and published by . This book was released on 2002 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aiming to support the development of a framework for the analysis of risk in project design and economic analysis, this handbook outlines technical approaches to modeling risk. Also summarized is the nature and practice of sensitivity analysis in dealing with uncertain outcomes as well as the principles to consider in typical risk analysis situations sector by sector. Case studies are included to demonstrate the application of quantitative risk analysis using actual Asian Development Bank projects to help improve project design and quality. Handbook users will learn to identify factors that are the key determinants of project outcomes, determine the likelihood of an individual project's returns being unacceptable, and design measures to mitigate the risks arising from the identified key factors.
Download or read book Cambridge Handbook of Engineering Education Research written by Aditya Johri and published by Cambridge University Press. This book was released on 2014-02-10 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cambridge Handbook of Engineering Education Research is the critical reference source for the growing field of engineering education research, featuring the work of world luminaries writing to define and inform this emerging field. The Handbook draws extensively on contemporary research in the learning sciences, examining how technology affects learners and learning environments, and the role of social context in learning. Since a landmark issue of the Journal of Engineering Education (2005), in which senior scholars argued for a stronger theoretical and empirically driven agenda, engineering education has quickly emerged as a research-driven field increasing in both theoretical and empirical work drawing on many social science disciplines, disciplinary engineering knowledge, and computing. The Handbook is based on the research agenda from a series of interdisciplinary colloquia funded by the US National Science Foundation and published in the Journal of Engineering Education in October 2006.
Download or read book Engineering written by Unesco and published by UNESCO. This book was released on 2010-01-01 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews engineering's importance to human, economic, social and cultural development and in addressing the UN Millennium Development Goals. Engineering tends to be viewed as a national issue, but engineering knowledge, companies, conferences and journals, all demonstrate that it is as international as science. The report reviews the role of engineering in development, and covers issues including poverty reduction, sustainable development, climate change mitigation and adaptation. It presents the various fields of engineering around the world and is intended to identify issues and challenges facing engineering, promote better understanding of engineering and its role, and highlight ways of making engineering more attractive to young people, especially women.--Publisher's description.
Download or read book Popular Astronomy written by Camille Flammarion and published by . This book was released on 1894 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
