Download or read book Vers l co conception des piles combustible written by Lucien Duclos and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les piles à combustible (PAC) de type PEMFC permettent d'assurer la conversion d'énergie chimique en énergie électrique en utilisant de l'hydrogène pouvant être produit à partir de sources renouvelables. La catalyse des réactions mises en jeu lors de cette conversion d'énergie nécessite l'utilisation de platine, dont les ressources sont faibles et la production (extraction et raffinage) complexe. De plus, du fait de son prix élevé, ce métal représente une part importante du coût de production des PEMFC. Aujourd'hui, le prix de cette technologie doit être réduit pour qu'elle soit économiquement compétitive et puisse être commercialisée à grande échelle. En outre, les charges en platine dans les électrodes de piles à combustible ne peuvent être réduites significativement sans altération de la performance et de la durabilité de ces systèmes. Donc, le développement d'une filière de recyclage pour assurer la récupération du Pt en fin de vie des PAC pourrait permettre une réduction du coût de production des PEMFC.Cette thèse a consisté à mettre en place une voie de recyclage du platine d'assemblages membrane-électrodes (AME) de PEMFC. Un procédé hydrométallurgique composé des étapes suivantes : (i) lixiviation, (ii) séparation et (iii) récupération du platine a été développé. Différentes alternatives de lixiviation (HCl/H2O2, HCl/HNO3), de séparation (par résine ou solvant), de récupération (sous forme de nanoparticules ou de sel) ont été testées. Le fonctionnement de ces processus de récupération du platine a alors été optimisé à partir de produits modèles (Pt/C et solutions synthétiques). Le choix de ces derniers a ensuite été orienté grâce à une étude d'analyse du cycle de vie (ACV) réalisée à l'échelle de l'AME.Enfin, 76% du platine contenu dans des AME composées de catalyseurs Pt-Co a pu être récupéré. Ce rendement a pu être obtenu après mise en place du procédé composé des étapes suivantes : (i) dissolution du Pt par lixiviation avec le mélange HCl/H2O2, (ii) séparation du cobalt sur résine échangeuse d'ions, (iii) récupération sous forme de nanoparticules par la voie polyol. Les résultats finaux d'ACV ont montré que le recyclage du platine permettrait une nette réduction des impacts environnementaux du cycle de vie d'AME de PEMFC.
Download or read book Electrical Times written by and published by . This book was released on 1965 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnetic Fusion Technology written by Thomas J. Dolan and published by Springer Science & Business Media. This book was released on 2014-02-10 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic Fusion Technology describes the technologies that are required for successful development of nuclear fusion power plants using strong magnetic fields. These technologies include: • magnet systems, • plasma heating systems, • control systems, • energy conversion systems, • advanced materials development, • vacuum systems, • cryogenic systems, • plasma diagnostics, • safety systems, and • power plant design studies. Magnetic Fusion Technology will be useful to students and to specialists working in energy research.
Download or read book Spurious Correlations written by Tyler Vigen and published by Hachette Books. This book was released on 2015-05-12 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Spurious Correlations ... is the most fun you'll ever have with graphs." -- Bustle Military intelligence analyst and Harvard Law student Tyler Vigen illustrates the golden rule that "correlation does not equal causation" through hilarious graphs inspired by his viral website. Is there a correlation between Nic Cage films and swimming pool accidents? What about beef consumption and people getting struck by lightning? Absolutely not. But that hasn't stopped millions of people from going to tylervigen.com and asking, "Wait, what?" Vigen has designed software that scours enormous data sets to find unlikely statistical correlations. He began pulling the funniest ones for his website and has since gained millions of views, hundreds of thousands of likes, and tons of media coverage. Subversive and clever, Spurious Correlations is geek humor at its finest, nailing our obsession with data and conspiracy theory.
Download or read book Reflections on the Motive Power of Fire written by Sadi Carnot and published by Courier Corporation. This book was released on 2012-05-09 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: The title essay, along with other papers in this volume, laid the foundation of modern thermodynamics. Highly readable, "Reflections" contains no arguments that depend on calculus, examining the relation between heat and work in terms of heat in steam engines, air-engines, and an internal combustion machine. Translation of 1890 edition.
Download or read book Architectural Design Portable Handbook written by Andy Pressman and published by McGraw Hill Professional. This book was released on 2001-03-15 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrate key information to facilitate optimal design solutions Essential for any working architect, Architectural Design Portable Handbook guides you through projects every step of the way, summarizing, synthesizing, and systematizing the core tasks of design. Developed by noted architect Andy Pressman, this handy take-along reference is certain to become an indispensable tool. You’ll find value-added features such as quick tips and case studies, quotes from leading architects, checklists, and a customizable layout that encourages you to add your own helpful notes and reminders. And that’s in addition to expert, time- and error-sparing information on: * Design strategies * Site analysis methods * The use of CAD and other graphics * Working with clients * User-needs evaluation * Data compilation * Concept development * Exploring design alternatives * Computing and design * Presentations * More!
Download or read book Report of the Presidential Commission on the Space Shuttle Challenger Accident written by DIANE Publishing Company and published by DIANE Publishing. This book was released on 1995-07 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Fundamental Wisdom of the Middle Way written by Nagarjuna and published by Oxford University Press. This book was released on 1995-11-09 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Buddhist saint N=ag=arjuna, who lived in South India in approximately the second century CE, is undoubtedly the most important, influential, and widely studied Mah=ay=ana Buddhist philosopher. His many works include texts addressed to lay audiences, letters of advice to kings, and a set of penetrating metaphysical and epistemological treatises. His greatest philosophical work, the Mūlamadhyamikak=arik=a--read and studied by philosophers in all major Buddhist schools of Tibet, China, Japan, and Korea--is one of the most influential works in the history of Indian philosophy. Now, in The Fundamental Wisdom of the Middle Way, Jay L. Garfield provides a clear and eminently readable translation of N=ag=arjuna's seminal work, offering those with little or no prior knowledge of Buddhist philosophy a view into the profound logic of the Mūlamadhyamikak=arik=a. Garfield presents a superb translation of the Tibetan text of Mūlamadhyamikak=arik=a in its entirety, and a commentary reflecting the Tibetan tradition through which N=ag=arjuna's philosophical influence has largely been transmitted. Illuminating the systematic character of N=ag=arjuna's reasoning, Garfield shows how N=ag=arjuna develops his doctrine that all phenomena are empty of inherent existence, that is, than nothing exists substantially or independently. Despite lacking any essence, he argues, phenomena nonetheless exist conventionally, and that indeed conventional existence and ultimate emptiness are in fact the same thing. This represents the radical understanding of the Buddhist doctrine of the two truths, or two levels of reality. He offers a verse-by-verse commentary that explains N=ag=arjuna's positions and arguments in the language of Western metaphysics and epistemology, and connects N=ag=arjuna's concerns to those of Western philosophers such as Sextus, Hume, and Wittgenstein. An accessible translation of the foundational text for all Mah=ay=ana Buddhism, The Fundamental Wisdom of the Middle Way offers insight to all those interested in the nature of reality.
Download or read book Preservation of Archives in Tropical Climates written by René Teygeler and published by . This book was released on 2001 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tunnel Fire Dynamics written by Haukur Ingason and published by Springer Nature. This book was released on with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Green Building written by Michael Bauer and published by Springer Science & Business Media. This book was released on 2009-12-03 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important consideration for energy-efficient buildings is their primary energy requirements over the entire life cycle. How to determine this? What integrative factors influence the performance of a healthy and sustainable building? This, while it may be important for clients and architects to know, is frequently not very transparent. This book has been written to assist with clarifying target criteria and expanding horizons when it comes to ecological buildings. It is meant as a handbook and source of reference for clients, architects, planners and building operators, to provide them with pertinent information about their design, construction and operation: how to do this in the most energy-efficient and economical manner? Also, there is feedback and documentation about prominent buildings like the Hamburg Dockland or the Landesbank Baden-Wuerttemberg in Stuttgart. They provide excellent architectural examples for detailed construction and design solutions. Further, there are insightful interviews with architects and clients about many important buildings, which help turn this book into an integrated source of reference for sustainable architecture. - A Guideline for Planning, Construction and Operation of sustainable Buildings - A source of reference for clients, architects, planners and building operators - Innovative architectural examples with sustainable concepts and design
Download or read book Landscape as Infrastructure written by Pierre Belanger and published by Routledge. This book was released on 2016-11-10 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: As ecology becomes the new engineering, the projection of landscape as infrastructure—the contemporary alignment of the disciplines of landscape architecture, civil engineering, and urban planning— has become pressing. Predominant challenges facing urban regions and territories today—including shifting climates, material flows, and population mobilities, are addressed and strategized here. Responding to the under-performance of master planning and over-exertion of technological systems at the end of twentieth century, this book argues for the strategic design of "infrastructural ecologies," describing a synthetic landscape of living, biophysical systems that operate as urban infrastructures to shape and direct the future of urban economies and cultures into the 21st century. Pierre Bélanger is Associate Professor of Landscape Architecture and Co-Director of the Master in Design Studies Program at Harvard University’s Graduate School of Design. As part of the Department of Landscape Architecture and the Advansed Studies Program, Bélanger teaches and coordinates graduate courses on the convergence of ecology, infrastructure and urbanism in the interrelated fields of design, planning and engineering. Dr. Bélanger is author of the 35th edition of the Pamphlet Architecture Series from Princeton Architectural Press, GOING LIVE: from States to Systems (pa35.net), co-editor with Jennifer Sigler of the 39th issue of Harvard Design Magazine, Wet Matter, and co-author of the forthcoming volume ECOLOGIES OF POWER: Mapping Military Geographies & Logistical Landscapes of the U.S. Department of Defense. As a landscape architect and urbanist, he is the recipient of the 2008 Canada Prix de Rome in Architecture and the Curator for the Canada Pavilion ad Canadian Exhibition, "EXTRACTION," at the 2016 Venice Architecture Biennale (extraction.ca).
Download or read book Tropical timber atlas written by Jean Gérard and published by Editions Quae. This book was released on 2017-11-30 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt: This atlas presents technical information for professionals who process and use temperate or tropical timber. It combines the main technical characteristics of 283 tropical species and 17 species from temperate regions most commonly used in Europe with their primary uses.
Download or read book Butterworths Banking Law Handbook written by Graham S. McBain and published by Lexis Law Publishing (Va). This book was released on 1993 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reactor control written by and published by . This book was released on 1965 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Painted Love written by Hollis Clayson and published by Getty Publications. This book was released on 2003-10-30 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this engrossing book, Hollis Clayson provides the first description and analysis of French artistic interest in women prostitutes, examining how the subject was treated in the art of the 1870s and 1880s by such avant-garde painters as Cézanne, Degas, Manet, and Renoir, as well as by the academic and low-brow painters who were their contemporaries. Clayson not only illuminates the imagery of prostitution-with its contradictory connotations of disgust and fascination-but also tackles the issues and problems relevant to women and men in a patriarchal society. She discusses the conspicuous sexual commerce during this era and the resulting public panic about the deterioration of social life and civilized mores. She describes the system that evolved out of regulating prostitutes and the subsequent rise of clandestine prostitutes who escaped police regulation and who were condemned both for blurring social boundaries and for spreading sexual licentiousness among their moral and social superiors. Clayson argues that the subject of covert prostitution was especially attractive to vanguard painters because it exemplified the commercialization and the ambiguity of modern life.
Download or read book Dilettanti written by Bruce Redford and published by Getty Publications. This book was released on 2008-08-07 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bruce Redford re-creates the vibrant culture of connoisseurship in Enlightenment England by investigating the multifaceted activities and achievements of the Society of Dilettani. Elegantly and wittily he dissects the British connoisseurs whose expeditions, collections, and publications laid the groundwork for the Neoclassical revival and for the scholarly study of Graeco-Roman antiquity. After the foundation of the society in 1732, the Dilettani commissioned portraits of the members. Including a striking group of mock-classical and mock-religious representations, these portraits were painted by George Knapton, Sir Joshua Reynolds, and Sir Thomas Lawrence. During the second half of the century, the society’s expeditions to the Levant yielded a series of pioneering architectural folios, beginning with the first volume The Antiquities of Athens in 1762. These monumental volumes aspired to empirical exactitude in text and image alike. They prepared the way for Specimens of Antient Sculpture (1809), which combines the didactic (detailed investigations into technique, condition, restoration, and provenance) with the connoisseurial (plates that bring the illustration of ancient sculpture to new artistic heights). The Society of Dilettanti’s projects and publications exemplify the Enlightenment ideal of the gentleman amateur, which is linked in turn to a culture of wide-ranging curiosity.
