Download or read book Comportement des sols compact s sur quelques chemins pression n gative control e written by Djamel Maouchi and published by . This book was released on 1998 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le travail présenté dans cette thèse a porté essentiellement sur les résultats d'une étude expérimentale, complétée par une partie simulation. Dans la partie expérimentale, deux matériaux ont été étudiés, nous nous sommes intéresse au comportement mécanique et hydrique. Concernant le comportement hydrique, nous avons étudié : ' l'effet de la variation de la teneur en eau sur les chemins de drainage - humidification. ' L'effet de la consolidation sur les cycles de drainage - humidification. Quant au comportement mecanique, il a fait l'objet d'une série d'essais de part et d'autre de l'optimum Proctor. Tout d'abord, du côté humide, ou nous avons réalisé des essais de compression isotrope suivie d'un écrasement triaxial en conditions non chainées. Par contre, du cote sec de l'optimum Proctor, nous avons réalisé une série d'essais œdométriques et triaxiaux à pression interstitielle imposée. Enfin, dans la partie simulation, l'utilisation d'un modèle élastoplastique pour les sols partiellement non saturés, développé à l'ECP nous a permis de reproduire de façon acceptable les chemins de compactage et triaxiaux et ne faisant varier que très peu de paramètres.
Download or read book R le de la pression interstitielle n gative dans le comportement des sols written by Moulay Zerhouni and published by . This book was released on 1991 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le travail présenté décrit le comportement des sols argileux lorsque la pression interstitielle de l'eau devient négative. Le détail des méthodes expérimentales permettant d'appliquer un chemin de contrainte avec pression interstitielle négative est présenté. Les résultats obtenus, interprétés en contraintes effectives, montrent que sous l'action de la pression interstitielle négative seule (drainage ou humidification), on retrouve le comportement obtenu sur chemin isotrope, lorsque l'on reste dans le domaine quasi-sature. Ce domaine se corrèle assez bien avec les caractéristiques de liquidité et de plasticité du sol. Les essais mécaniques réalisés dans ce domaine ont permis de préciser les conditions pour lesquelles le principe de la contrainte effective de Terzaghi reste applicable. En dehors de ce domaine, l'apparition systématique de la localisation ne permet plus l'utilisation de ce principe. Le critère de rupture obtenu semble pouvoir être décrit par les dernières approches proposées (Escario, Fredlund, Toll...). Cependant, il reste à démontrer si la localisation fait partie du comportement vrai du sol et à vérifier si le caractère de celle-ci est aléatoire ou non. En faisant l'hypothèse que le sol support des chaussées européennes reste quasi-saturé, une simulation numérique de son humidification est effectuée
Download or read book COMPORTEMENT DES SOLS SOUMIS A UNE PRESSION INTERSTITIELLE NEGATIVE APPLICATION AUX SILOS written by INDARTO. and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: DIFFERENTS MATERIAUX (ARGILE, LIMON, SABLE, BILLES DE VERRE, ET MATERIAUX GROSSIERS) ONT ETE CHOISIS POUR ETUDIER LE COMPORTEMENT DES SOLS SOUMIS A UNE PRESSION INTERSTITIELLE NEGATIVE. LES RESULTATS MONTRENT QUE LES CHEMINS DE DRAINAGE DES MATERIAUX GRANULAIRES ET GROSSIERS COMPACTES OBEISSENT BIEN A LA LOI DE JURIN ET QUE L'HYSTERESIS EST ABSENTE DES CYCLES DRAINAGE-HUMIDIFICATION DES MATERIAUX GROSSIERS COMPACTES A L'OPN. LE DOMAINE SATURE EST IMPORTANT POUR LES SOLS ARGILEUX SOUMIS A UNE PRESSION INTERSTITIELLE NEGATIVE. L'ETUDE EXPERIMENTALE DU COMPORTEMENT DU LIMON DE JOSSIGNY SUR DIFFERENTS CHEMINS A PRESSION INTERSTITIELLE IMPOSEE (DRAINAGE-HUMIDIFICATION, CHEMIN TRIAXIAUX NORMALEMENT CONSOLIDES OU SURCONSOLIDES) MONTRE QUE LA LOGIQUE DES SOLS SATURES ET LA NOTION CLASSIQUE DE CONTRAINTE EFFECTIVE DE TERZAGHI RESTENT VALABLES TANT QUE L'EAU EST LA PHASE CONTINUE, C'EST-A-DIRE, EN PREMIERE APPROXIMATION, POUR DES TENEURS EN EAU SUPERIEURES A LA LIMITE DE RETRAIT. POUR CONTROLER L'ETAT HYDRIQUE DU MATERIAU DANS UN SILO, LA PRESSION INTERSTITIELLE NEGATIVE EST UN PARAMETRE QUI EST PLUS SENSIBLE QUE LA TENEUR EN EAU
Download or read book Contribution l tude du r le de la pression interstitielle n gative dans le gonflement et d autres aspects du comportement des sols non satur s written by Ria Asih Aryani Soemitro and published by . This book was released on 1994 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: La présente thèse a pour objet d'étudier le comportement des sols lorsqu'ils sont soumis à une pression interstitielle négative ou une contrainte. La première partie est consacrée aux études bibliographiques générales sur l'effondrement et les sols gonflants. Le comportement des sols lors de cycle de dessiccation-humidification a été étudié pour avoir des informations sur le rôle de la structure des sols et les correspondances entre les paramètres des sols soumis à une pression interstitielle négative. Une étude du gonflement sur une montmorillonite compactée sous forte contrainte a été faite à contrainte mécanique ou pression négative imposées. Des mesures de pression de gonflement ont été effectuée sur la montmorillonite compactée très dense et à l'OPN, ainsi qu'une validation a partir du modèle développé à l'École centrale de Paris. Ce modèle permet de définir une courbe de pression de gonflement pour tous les états initiaux du matériau. L'influence d'un produit hydrophobant sur le comportement mécanique et le gonflement a été observée sur la montmorillonite compactée à l'OP. Certains aspects du comportement cyclique et du compactage sous fortes contraintes sur la kaolinite P 300 et l'argile blanche ont été observés sur chemin œdométrique. Une étude de l'effondrement du matériau de la verne a été faite sur chemin oedometrique sous contrainte verticale constante et sur chemin isotrope à surpression d'air. Les essais triaxiaux à surpression d'air ont été faits sur des échantillons de kaolinite P 300 compactes à l'OPN. Les résultats montrent qu'une interprétation basée sur le concept de la contrainte effective de Terzaghi est satisfaisante dans ce cas.
Download or read book Comportement m canique et hydraulique des sols soumis une pression interstitielle n gative written by Saïd Taïbi and published by . This book was released on 1994 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: La thèse présenté un ensemble de résultats expérimentaux sur des sols soumis a une pression interstitielle négative sur différents chemins: drainage-humidification, œdométriques, triaxial, etc. ceux-ci mettent en évidence les différents domaines de comportement du sol et les aspects spécifiques du comportement dans chaque domaine: sature, quasi-sature, faiblement sature. Parallèlement, une modélisation à partir d'arrangement réguliers de billes est proposée et validée par confrontation avec les résultats expérimentaux ; cette approche permet d'expliquer un certain nombre de comportements observes dans la réalité et est à la base d'une modélisation élastoplastique du comportement des sols partiellement saturés utilisant un concept de contraintes effectives généralisées. L'étude est complétée par des mesures de perméabilités polyphasiques dans différents matériaux et la recherche d'une plus grande cohérence entre toutes les propriétés de ces matériaux
Download or read book The European Landscape Convention written by Michael Jones and published by Springer Science & Business Media. This book was released on 2011-02-09 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important and insightful book provides, for the first time, a broad presentation of ongoing research into public participation in landscape conservation, management and planning, following the 2000 European Landscape Convention which came into force in 2004. The book examines both the theory of participation and what lessons can be learnt from specific European examples. It explores in what manner and to what extent the provisions for participation in the European Landscape Convention have been followed up and implemented. It also presents and compares different experiences of participation in selected countries from northern, southern, eastern and western Europe, and provides a critical examination of public participation in practice. However, while the book’s focus is necessarily on Europe, many of the conclusions drawn are of global relevance. The book provides a valuable reference for researchers and advanced students in landscape policies and management, as well as for professionals and others interested in land-use planning and environmental management.
Download or read book Advances in Solid State Fermentation written by S. Roussos and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: G.HAINNAUX Departement Milieu et Activites Agricoles, Centre ORSTOM, 911 Avenue d' Agropolis, B.P. 5045, 34032 Montpellier Cedex , France. Solid state fermentation, popularly abbreviated as SSF, is currently investigated by many groups throughout the world. The study of this technique was largely neglected in the past in European and Western countries and there is now a high demand for SSF, meaning in food, environment, agricultural, phannaceutical and many other biotechnological applications. It gives me satisfaction to note that the importance of this technique was realised at my department way back in 1975 since then, our team has put concentrated efforts on developing this technique. xvii Foreword Advances in Solid State Fermentation Foreword M. PUYGRENIER Agropolis Valorisation, Avenue d' Agropolis, 34394 Montpellier Cedex 5, France. On the name of the Scientific Community, I would like to express the wish that this International Symposium on SSF should be successful. Solid State Fermentation is part of biotechnology research. It consists on seeding solid culture medium with bacteria or fungi (filamentous or higher) and on producing, in this medium (solid components and exudates) metabolites and high value products. In fact, this process is very old. In older industries such the food and agricultural, this technique has been extensively used. An example of this is the production of pork sausages and Roquefort cheese. Pharmaceutical industry could make extensive use of SSF in the production of secondary metabolites of many kinds and development in this direction is soon expected.
Download or read book Terra 2008 written by Leslie Rainer and published by Getty Publications. This book was released on 2011-06-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.
Download or read book Water Heritage written by Willem Willems and published by . This book was released on 2017-01-15 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is vital for life, and its availability has been a concern for mankind throughout the ages. Its presence has always been ascertained in a variety of ways and the development of human society everywhere is connected with various forms of water management. Man also needed to manage water to find protection from its dangers and the need for that is increasing. In the coming decades, the impact of climate change is expected to intensify floods and droughts, affect groundwater resources, raise sea levels, increase pollution and enhance the frequency and magnitude of disasters. Societies around the world are challenged to adapt to these threats to ensure water security, economic prosperity and environmental and cultural sustainability. This book deals with the heritage of water management and the use that was made of water, as well as the impact of water management on heritage. An example of the former may be an ancient irrigation system in the Filipines or in the Middle East that still functions today, while the latter may reflect the importance of maintaining groundwater levels for the preservation of organic remains on archaeological sites or of wooden piles underneath standing buildings. In either case the papers in this book reflect the dynamic nature of water, and hence the equally dynamic relation between water management and heritage. This publication follows up on a Heritage and Water conference in Amsterdam, the first of its kind. Its main purpose is to credibly present the importance and value of heritage and historical experience for water and sustainable development, and vice versa, present the importance of water management for the protection of heritage. It presents evolving insights and concepts about Water and about Heritage from a variety of disciplines, policy and public perspectives illustrated with cases studies and aims to connect decision makers with experts such as engineers, archaeologists, historians, geographers, ecologist and landscape architects
Download or read book State Space World written by Henri Lefebvre and published by U of Minnesota Press. This book was released on 2009 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Making the political aspect of Lefebvre's work available in English for the first time, this book contains essays on philosophy, political theory, state formation, spatial planning, and globalization, as well as provocative reflections on the possibilities and limits of grassroots democracy under advanced capitalism.
Download or read book Soil Biology as Related to Land Use Practices written by and published by . This book was released on 1980 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Sounds of Early Cinema written by Richard Abel and published by Indiana University Press. This book was released on 2001-10-03 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sounds of Early Cinema is devoted exclusively to a little-known, yet absolutely crucial phenomenon: the ubiquitous presence of sound in early cinema. "Silent cinema" may rarely have been silent, but the sheer diversity of sound(s) and sound/image relations characterizing the first 20 years of moving picture exhibition can still astonish us. Whether instrumental, vocal, or mechanical, sound ranged from the improvised to the pre-arranged (as in scripts, scores, and cue sheets). The practice of mixing sounds with images differed widely, depending on the venue (the nickelodeon in Chicago versus the summer Chautauqua in rural Iowa, the music hall in London or Paris versus the newest palace cinema in New York City) as well as on the historical moment (a single venue might change radically, and many times, from 1906 to 1910). Contributors include Richard Abel, Rick Altman, Edouard Arnoldy, Mats Björkin, Stephen Bottomore, Marta Braun, Jean Châteauvert, Ian Christie, Richard Crangle, Helen Day-Mayer, John Fullerton, Jane Gaines, André Gaudreault, Tom Gunning, François Jost, Charlie Keil, Jeff Klenotic, Germain Lacasse, Neil Lerner, Patrick Loughney, David Mayer, Domi-nique Nasta, Bernard Perron, Jacques Polet, Lauren Rabinovitz, Isabelle Raynauld, Herbert Reynolds, Gregory A. Waller, and Rashit M. Yangirov.
Download or read book Quantum Mechanics Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.
Download or read book Atlas of Fatigue Curves written by Howard E. Boyer and published by ASM International. This book was released on 1985-12-31 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains more than 500 fatigue curves for industrial ferrous and nonferrous alloys. Also includes an explanation of fatigue testing and interpretation of test results. Each curve is presented independently and includes an explanation of its particular importance.
Download or read book Informatics in Control Automation and Robotics written by Juan Andrade Cetto and published by Springer Science & Business Media. This book was released on 2011-03-15 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book includes a set of selected papers from the fourth “International Conference on Informatics in Control Automation and Robotics” (ICINCO 2009), held in Milan, Italy, from 2 to 5 July 2009. The conference was organized in three simultaneous tracks: “Intelligent Control Systems and Optimization”, “Robotics and Automation” and “Systems Modeling, Signal Processing and Control”. The book is based on the same structure. ICINCO received 365 paper submissions, not including those of workshops, from 55 countries, in all continents. After a double blind paper review performed by the Program Committee only 34 submissions were accepted as full papers and thus selected for oral presentation, leading to a full paper acceptance ratio of 9%. Additional papers were accepted as short papers and posters. A further refinement was made after the conference, based also on the assessment of presentation quality, so that this book includes the extended and revised versions of the very best papers of ICINCO 2009. Commitment to high quality standards is a major concern of ICINCO that will be maintained in the next editions of this conference, including not only the stringent paper acceptance ratios but also the quality of the program committee, keynote lectures, workshops and logistics.
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 In Vitro Culture of Mycorrhizas written by Stéphane Declerck and published by Springer Science & Business Media. This book was released on 2005-04-13 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book describing in vitro cultivation of root organs. The text describes various biological aspects such as the physiology, biochemistry, biodiversity, and life cycles of fungi, as well as the effects of symbiosis on plant growth and development, including large-scale fungus production for biotechnological use. Detailed protocols allow the immediate application of the method to culture mycorrhizal fungi in vitro.
