Download or read book Adaptation d un interf rom tre en infrarouge lointain pour l tude de mol cules gaz ou vapeur written by Brigitte Boniface-Mestag and published by . This book was released on 1978 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA CONNECTION D'UN ORDINATEUR ET D'UN INTERFEROMETRE DE MICHELSON A PERMIS D'ATTEINDRE FACILEMENT LE DOMAINE DE L'IR LOINTAIN ET D'ETUDIER LA MOLECULE DU B-TRICHLOROBORAZENE A L'ETAT GAZEUX, LIQUIDE ET SOLIDE. ATTRIBUTION DES MODES DE VIBRATION EXPERIMENTAUX ET CALCULS DES FREQUENCES EN COORDONNEES SYMETRIQUES DANS UN CHAMP DE FORCE UREY BRADLEY. ANALYSE A L'AIDE D'UN PROGRAMME DE CALCUL DES CONTOURS DE BANDES DES ESPECES DEGENEREES DE TYPE E' ET E''

Download or read book Spectroscopie infrarouge haute r solution de mol cules d int r t pour les atmosph res terrestre et plan taires written by Alix Dehayem Massop Kamadjeu and published by . This book was released on 2006 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: Notre travail de thèse avait pour but une meilleure caractérisation des molécules HONO, DONO et CH3CN.L’étude des molécules de HONO et DONO a consisté tout d’abord à l’analyse de leur spectre de rotation pure, observé dans l’infrarouge lointain. Les résultats obtenus ont servi à l’analyse de la bande u1 de DONO et des bandes u5 et u6 de trans-HONO couplées par de fortes interactions de Coriolis. L’ensemble de nos travaux sur HONO et DONO a mené à une prédiction des positions et intensités relatives des raies qui reproduit les spectres observés de manière très satisfaisante pour les régions spectrales situées entre 40 et 150 cm-1 (rotation pure), entre 2350 et 3000 cm-1 pour les bandes u1 de DONO et entre 430 et 620 cm-1 pour les bandes u5 et u6 de trans-HONO respectivement. Nous avons terminé l’étude de HONO et DONO par le calcul des structures à l’équilibre expérimentale et ab initio de trans-HONO. L’originalité de notre travail a été également de combiner les méthodes expérimentales et des calculs quanto-chimiques de haut niveau pour déterminer une structure semi-expérimentale à l’équilibre fiable de la même molécule. L’étude de CH3CN a consisté à produire une prédiction raie par raie des positions et intensités des bandes u8, 2u8, u4 et u7 qui tient compte des interactions de vibration-rotation entre ces bandes dans le domaine spectral de 300 à 400 cm-1 et de 685 à 1200 cm-1 utile à la détection de CH3CN sur Titan.

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 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 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:

Download or read book Physical Properties of Amorphous Materials written by David Adler and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Institute for Amorphous Studies was founded in 1982 as the international center for the investigation of amorphous mate rials. It has since played an important role in promoting the und er standing of disordered matter in general. An Institute lecture series on "Fundamentals of Amorphous Materials and Devices" was held during 1982-83 with distinguished speakers from universities and industry. These events were free and open to the public ,and were attended by many representatives of the scientific community. The lectures themselves were highly successful inasmuch as they provided not only formal instruction but also an opportunity for vigorous and stimulating debate. That last element could not be captured within the pages of a book I but the lectures concentrated on the latest advances in the field I which is why their essential contents are he re reproduced in collective form. Together they constitute an interdisciplinary status report of the field. The speakers brought many different viewpoints and a variety of back ground experiences io bear on the problems involved I but though language and conventions vary I the essential unity of the concerns is very clear I as indeed are the ultimate benefits of the many-sided approach.