Download or read book Interaction d une onde de souffle avec une mousse liquide written by Martin Monloubou and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les mousses liquides sont utilisées dans de nombreux domaines de la vie quotidienne. Leur excellente capacité à dissiper de l'énergie en fait également des matériaux très utilisés dans le domaine militaire pour atténuer les ondes de souffle émises lors d'une explosion. Dans cette thèse, nous avons conçu un dispositif expérimental original nous permettant de visualiser la déformation d'une mousse liquide lors de l'impact d'une onde de souffle en sortie d'un tube à choc. Nous mesurons la surpression en plusieurs points de la mousse, sur une gamme de 5 à 50 kPa. Nous mettons en évidence une atténuation de pression qui augmente avec la taille des bulles puis sature, tous les autres paramètres, notamment la fraction liquide, étant maintenus constants. Ces résultats sont interprétés avec un modèle de dissipation thermique à l'échelle de la bulle suggérant l'existence d'un maximum d'atténuation pour une taille de bulles donnée. Nous caractérisons ensuite la vitesse de propagation de l'onde au sein de la mousse. Aux petites amplitudes, la vitesse suit le modèle de Wood, basé sur une propagation linéaire dans un milieu continu effectif. Aux plus hautes amplitudes, nous mettons en évidence l'apparition d'un régime non linéaire, avec une vitesse de propagation plus importante et une atténuation plus faible, ces deux phénomènes étant retrouvés à la fois théoriquement et numériquement. Près de la source, la mousse est détruite par le choc. Nous terminons notre étude avec des résultats plus qualitatifs sur la quantité de mousse détruite et la vitesse de propagation du front de rupture, visualisées pour la première fois dans une mousse tridimensionnelle.
Download or read book Choc et onde de souffle dans les mousses aqueuses Etude exp rimentale et mod lisation num rique written by Emilie Del Prete and published by . This book was released on 2012 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans une optique de sécurité pyrotechnique, le CEA DAM s'intéresse aux moyens d'atténuer les ondes de souffle par des mousses aqueuses. L'objectif de cette thèse est de comprendre les phénomènes physiques régissant la propagation et l'interaction d'une onde de choc avec une mousse, et d'en proposer une modélisation. Une mousse aqueuse est un milieu diphasique constitué d'un assemblage de cellules de gaz séparées par une phase liquide. Cette thèse s'intéresse principalement à des mousses aqueuses, qualifiées de sèches dont le foisonnement (inverse de la fraction volumique) est supérieur à 20. Les travaux ont été organisés autour de la conception et la réalisation de deux campagnes expérimentales. La première, réalisée en Tube à Choc (TaC) à l'IUSTI Marseille, a permis de déterminer le comportement de la mousse soumise à une onde de choc plane. La seconde campagne a été effectuée sur le champ de tir du CEA au Polygone d'Expérimentation de Moronvilliers. Cette expérience a été conçue dans le but d'obtenir une base de données pyrotechniques. Ces deux campagnes ont alors servi au développement d'un modèle numérique, reposant sur un formalisme multiphasique eulérien résolu grâce à la Méthode des Equations Discrètes. L'analyse des résultats expérimentaux en TaC a permis de montrer que, sous l'effet de forts gradients de pression, les films rompent et la mousse s'effondre en un ensemble de ligaments liquides : les Bords de Plateau se déforment puis se fragmentent en un spray. La structure de l'onde incidente est alors composée de deux parties, un choc précurseur générant une surpression de plus d'une centaine de millibars et qui est la signature de la fragmentation de la mousse et un train d'ondes de compression traduisant la mise en vitesse des Bords de Plateau dans l'écoulement gazeux. Les expérimentations pyrotechniques ont permis de corroborer ces résultats obtenus en TaC. Enfin, l'analyse numérique effectuée confirme également que le foisonnement de la mousse est le paramètre principal qui permet de contrôler l'atténuation des ondes de souffle dans les mousses aqueuses. Les simulations numériques ont également permis de restituer la structure complexe de l'onde de souffle et de déterminer les phénomènes prépondérants.
Download or read book Fran ais Interactif written by Karen Kelton and published by . This book was released on 2019-08-15 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook includes all 13 chapters of Français interactif. It accompanies www.laits.utexas.edu/fi, the web-based French program developed and in use at the University of Texas since 2004, and its companion site, Tex's French Grammar (2000) www.laits.utexas.edu/tex/ Français interactif is an open acess site, a free and open multimedia resources, which requires neither password nor fees. Français interactif has been funded and created by Liberal Arts Instructional Technology Services at the University of Texas, and is currently supported by COERLL, the Center for Open Educational Resources and Language Learning UT-Austin, and the U.S. Department of Education Fund for the Improvement of Post-Secondary Education (FIPSE Grant P116B070251) as an example of the open access initiative.
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 Me Before You written by Jojo Moyes and published by Penguin. This book was released on 2012-12-31 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the #1 New York Times bestselling author of The Giver of Stars and the forthcoming Someone Else's Shoes, discover the love story that captured over 20 million hearts in Me Before You, After You, and Still Me. They had nothing in common until love gave them everything to lose . . . Louisa Clark is an ordinary girl living an exceedingly ordinary life—steady boyfriend, close family—who has barely been farther afield than their tiny village. She takes a badly needed job working for ex–Master of the Universe Will Traynor, who is wheelchair bound after an accident. Will has always lived a huge life—big deals, extreme sports, worldwide travel—and now he’s pretty sure he cannot live the way he is. Will is acerbic, moody, bossy—but Lou refuses to treat him with kid gloves, and soon his happiness means more to her than she expected. When she learns that Will has shocking plans of his own, she sets out to show him that life is still worth living. A Love Story for this generation and perfect for fans of John Green’s The Fault in Our Stars, Me Before You brings to life two people who couldn’t have less in common—a heartbreakingly romantic novel that asks, What do you do when making the person you love happy also means breaking your own heart?
Download or read book The Concept of Negritude in the Poetry of Leopold Sedar Senghor written by Sylvia Washington Ba and published by Princeton University Press. This book was released on 2015-03-08 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Negritude has been defined by Léopold Sédar Senghor as "the sum of the cultural values of the black world as they are expressed in the life, the institutions, and the works of black men." Sylvia Washington Bâ analyzes Senghor's poetry to show how the concept of negritude infuses it at every level. A biographical sketch describes his childhood in Senegal, his distinguished academic career in France, and his election as President of Senegal. Themes of alienation and exile pervade Senghor's poetry, but it was by the opposition of his sensitivity and values to those of Europe that he was able to formulate his credo. Its key theme, and the supreme value of black African civilization, is the concept of life forces, which are not attributes or accidents of being, but the very essence of being. Life is an essentially dynamic mode of being for the black African, and it has been Senghor's achievement to communicate African intensity and vitality through his use of the nuances, subtleties, and sonorities of the French language. In the final chapter Sylvia Washington Bâ discusses the future of Senghor's belief that the black man's culture should be recognized as valid not simply as a matter of human justice, but because the values of negritude could be instrumental in the reintegration of positive values into western civilization and the reorientation of contemporary man toward life and love. Originally published in 1973. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Download or read book A German English Dictionary for Chemists written by Austin M 1876-1956 Patterson and published by Scholar Select. This book was released on 2015-08-08 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Plant Ecology written by Unesco and published by . This book was released on 1955 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Story of Crass written by George Berger and published by . This book was released on 2009 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-depth interviews with the main movers in the punk rock movement--Crass members Penny Rimbaud, Gee Vaucher, and Steve Ignorant--detail the face of the revolution founded by these radical thinkers and artists. When punk ruled the waves, Crass waived the rules by putting out their own records, films, and magazines and setting up a series of situationist pranks that were dutifully covered by the world's press. Not just another iconoclastic band, Crass was a musical, social, and political phenomenon: commune dwellers that were rarely photographed and remained contemptuous of conventional pop stardom. As detailed in this history, their members explored and finally exhausted the possibilities of punk-led anarchy. This definitive biography of the band not only gives backstage access to their lives, philosophies, and the movement that followed, but also to never-before-seen photographs and rare dialogues.
Download or read book Simon Denny written by Simon Denny and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Simon Denny's new body of work for Portikus ranks among the most ambitious the artist has developed to date. Over the period of one year, the artist researched and developed an intricate project that has grown to considerable dimensions -- both physically and in terms of its critical content. For two months, the monumental gallery space is turned into an homage to technology, communication, and the relentless need for innovation. Simon Denny has produced an embracing and multi-faceted installation that functions as a documentary of the South Korean technology giant Samsung and its global success story. The exhibition's title, "New Management", refers to the legendary management philosophy that Lee Kun-hee, Chairman of the Samsung Group, infamously introduced in the early nineties."--Publisher's website.
Download or read book Metamorphoses written by Emanuele Coccia and published by John Wiley & Sons. This book was released on 2021-06-09 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are all fascinated by the mystery of metamorphosis – of the caterpillar that transforms itself into a butterfly. Their bodies have almost nothing in common. They don’t share the same world: one crawls on the ground and the other flutters its wings in the air. And yet they are one and the same life. Emanuele Coccia argues that metamorphosis – the phenomenon that allows the same life to subsist in disparate bodies – is the relationship that binds all species together and unites the living with the non-living. Bacteria, viruses, fungi, plants, animals: they are all one and the same life. Each species, including the human species, is the metamorphosis of all those that preceded it – the same life, cobbling together a new body and a new form in order to exist differently. And there is no opposition between the living and the non-living: life is always the reincarnation of the non-living, a carnival of the telluric substance of a planet – the Earth – that continually draws new faces and new ways of being out of even the smallest particle of its disparate body. By highlighting what joins humans together with other forms of life, Coccia’s brilliant reflection on metamorphosis encourages us to abandon our view of the human species as static and independent and to recognize instead that we are part of a much larger and interconnected form of life.
Download or read book Max s Sandwich Book written by Max Halley and published by Bonnier Publishing Ltd.. This book was released on 2018-05-17 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: THE SUNDAY TIMES BESTSELLER AS SEEN ON SUNDAY BRUNCH "GENIUS ... CHANGED THE WAY I'M GOING TO EAT FROM NOW ON ... THESE SANDWICHES ARE EPIC!" THE HAIRY BIKERS Max's Sandwich Book is the ultimate guide to creating perfection between two slices of bread. Max Halley owns Britain's most amazing sandwich shop. After working in some of the country's best restaurants, he realised that the sandwich, humanity's greatest invention, was due a renaissance. So Max decided to open his own place and reinvent the sandwich forever. Inside this book you will find: · Award-winning creations from his shop · Inspired variations on classic sandwiches · Brilliant, delicious ways to use your leftovers · Sandwiches for breakfast · Sandwiches for dinner · Sandwiches for dessert · And more than 100 recipes for making your own ingenious creations at home. Ham, Egg & Chips never tasted so good. Max is the owner of Max's Sandwich Shop in Crouch End, winner of the Observer Food Monthly Award for Best Cheap Eat in 2015. "Amazing" Russell Norman, author of Polpo "Max is a sensation!" Meera Sodha "The Ham, Egg & Chips is the best sandwich I've ever eaten in my life" Simon Rimmer, Sunday Brunch "Very, very good" Evening Standard
Download or read book Black Writers in French written by Lilyan Kesteloot and published by . This book was released on 1991 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Historical Dictionary of Iran written by John Henry Lorentz and published by Historical Dictionaries of Asia, Oceania, and the Middle East. This book was released on 2007 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides an overview of specific events, movements, people, political and social groups, places, trends, and chronology. Allows for considerable exploration of a number of historical and contemporary topics and issues. The modern period, defined as 1800-present, is covered extensively.
Download or read book The Problems of the Arid Zone written by Unesco and published by paris. This book was released on 1962 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Heidegger Change written by Catherine Malabou and published by SUNY Press. This book was released on 2011-12-01 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elaborates the author’s conception of plasticity by proposing a new way of thinking through Heidegger’s writings on change.
Download or read book Climatology written by Unesco and published by . This book was released on 1958 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
