Contribution au développement de la projection thermique à très faible pression

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ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.:/5 (758 download)

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Book Synopsis Contribution au développement de la projection thermique à très faible pression by : Dmitry Sokolov

Download or read book Contribution au développement de la projection thermique à très faible pression written by Dmitry Sokolov and published by . This book was released on 2009 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le but de ce travail est de mettre au point une nouvelle technologie de dépôts de matériaux par voie sèche. Pour ce faire, nous avons développé, par une approche théorique et expérimentale, un nouveau procédé qui met en oeuvre la technologie de la projection thermique dans le domaine des basses pressions (inférieures à 10 hPa). Le domaine des basses pressions concerné par cette étude permet de générer de fortes enthalpies au niveau de la source thermique, à pression élevées, et de travailler à faibles pressions au niveau du substrat. Ce qui d'une part évite les contaminations chimiques (oxydation, réactions chimiques,...) dans les matériaux du dépôt et d'autre part réduit le taux de porosité et améliore l'adhérence de la couche ainsi construite. Ainsi, les propriétés physiques des dépôts obtenus s'approchent de celles des dépôts réalisés par le procédé de déposition en phase vapeur sous vide (PVD) en ayant l'avantage d'en accroître la vitesse d'obtention. Pendant ce travail, une approche théorique par des moyens de calcul (FLUENT) a permis d'étudier les conditions d'écoulement du plasma et l'effet de l'injection du matériau. Les résultats ont permis de définir un divergent de géométrie Laval adaptable à une torche classique F4VB de projection thermique sous pression réduite (VLPPS). En parallèle, une enceinte de grand volume adoptée au procédé a été conçue, réalisée et testée au sein du laboratoire. Cette enceinte, constituée d'une chambre mobile et d'une chambre fixe, est équipée d'un robot, de différents systèmes de diagnostics (thermocouples, DPV, spectromètre optique, pyromètre optique, etc.), de systèmes de refroidissement d'un porte substrat. Différents essais de matériaux métalliques ont permis de valider le concept et le procédé. Ensuite l'étude a concerné l'obtention de différents dépôts de matériaux à base de cuivre, à différentes pressions. Pour étudier les différents constituants du matériau issu de la torche, une méthode spécifique a été développée, qui permet de caractériser les phases vapeurs et solides créées de manière séparée et indépendante. Les résultats ont permis de comparer la structure des dépôts obtenus par ce procédé et par le procédé PVD, et de confirmer la possibilité d'obtention de revêtements denses ou colonnaires.

The Science of metals

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (162 download)

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Book Synopsis The Science of metals by : Zay Jeffries

Download or read book The Science of metals written by Zay Jeffries and published by . This book was released on 1924 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Livestock Policy Analysis

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Publisher : ILRI (aka ILCA and ILRAD)
ISBN 13 : 9789291460038
Total Pages : 268 pages
Book Rating : 4.4/5 (6 download)

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Book Synopsis Livestock Policy Analysis by : International Livestock Research Institute

Download or read book Livestock Policy Analysis written by International Livestock Research Institute and published by ILRI (aka ILCA and ILRAD). This book was released on 1995-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.

What is the Code of Conduct for Responsible Fisheries?

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Publisher : Food & Agriculture Org.
ISBN 13 : 9789251045411
Total Pages : 20 pages
Book Rating : 4.0/5 (454 download)

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Book Synopsis What is the Code of Conduct for Responsible Fisheries? by : Food and Agriculture Organization of the United Nations

Download or read book What is the Code of Conduct for Responsible Fisheries? written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2001 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The actual Code of conduct is also available (1996) (ISBN 9251038341).

Quantum Mechanics, Volume 3

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Publisher : John Wiley & Sons
ISBN 13 : 3527345558
Total Pages : 790 pages
Book Rating : 4.5/5 (273 download)

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Book Synopsis Quantum Mechanics, Volume 3 by : Claude Cohen-Tannoudji

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.

Population, Environment and Development

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Publisher : United Nations Publications
ISBN 13 : 9789211513561
Total Pages : 60 pages
Book Rating : 4.5/5 (135 download)

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Book Synopsis Population, Environment and Development by : UN. Population Division

Download or read book Population, Environment and Development written by UN. Population Division and published by United Nations Publications. This book was released on 2001 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general trends of rapid population growth, sustained but uneven economic improvement, and environmental degradation, are well known. Population and development policies are vital components of action needed to ensure sustainable development and to safeguard the environment. The topics investigated in this report include: the evolution of population and the environment at major UN conferences; trends in population, environment and development; government views; health, mortality, fertility and the environment; urbanization.

Agrimonde – Scenarios and Challenges for Feeding the World in 2050

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Publisher : Springer
ISBN 13 : 9789402402636
Total Pages : 0 pages
Book Rating : 4.4/5 (26 download)

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Book Synopsis Agrimonde – Scenarios and Challenges for Feeding the World in 2050 by : Sandrine Paillard

Download or read book Agrimonde – Scenarios and Challenges for Feeding the World in 2050 written by Sandrine Paillard and published by Springer. This book was released on 2016-09-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: How will the world be able to feed close to 9 billion people in 2050 and still maintain the ecosystems? In this perspective, INRA and CIRAD launched the initiative, in 2006, to develop a foresight project for analysing issues pertaining to the world's food and agricultural systems on the 2050 timeline. This book provides a synthetic presentation of the main conclusions that this foresight project has yielded. First, it recapitulates the main statistical references for the period 1961 to 2003, before going on to describe the Agribiom simulation tool used to calculate food biomass resource use balances. Two scenarios on the 2050 timeline are then considered: Agrimonde GO is a trend-based scenario that bets on economic growth to feed the world, in a context where environmental protection is not a priority; in contrast, the idea in Agrimonde 1 is to feed the world while preserving its ecosystems.

Aquaculture Development

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Publisher : Food & Agriculture Org.
ISBN 13 : 9789251039717
Total Pages : 52 pages
Book Rating : 4.0/5 (397 download)

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Book Synopsis Aquaculture Development by : Food and Agriculture Organization of the United Nations

Download or read book Aquaculture Development written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 1997 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides annotations to the Principles of Article 9 of the Code of Conduct for Responsible Fisheries. These annotations are meant to serve as general guidance, and should be taken as suggestions or observations intended to assist those interested in identifying their own criteria and options for actions, as well as partners for collaboration, in support of sustainable aquaculture development.

Audio Effectiveness in Aviation

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ISBN 13 :
Total Pages : 374 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Audio Effectiveness in Aviation by : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerospace Medical Panel. Symposium

Download or read book Audio Effectiveness in Aviation written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerospace Medical Panel. Symposium and published by . This book was released on 1997 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Disappearing Computer

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Publisher : Springer
ISBN 13 : 3540727272
Total Pages : 314 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis The Disappearing Computer by : Norbert Streitz

Download or read book The Disappearing Computer written by Norbert Streitz and published by Springer. This book was released on 2007-07-20 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines how the computer, as we currently know it, will be replaced by a new generation of technologies, moving computing off the desktop and ultimately integrating it with real world objects and everyday environments. It provides a unique combination of concepts, methods and prototypes of ubiquitous and pervasive computing reflecting the current interest in smart environments and ambient intelligence.

Tropical Agriculturist and Magazine of the Ceylon Agricultural Society

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Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.:/5 (4 download)

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Book Synopsis Tropical Agriculturist and Magazine of the Ceylon Agricultural Society by :

Download or read book Tropical Agriculturist and Magazine of the Ceylon Agricultural Society written by and published by . This book was released on 1988 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Structure of Atmospheric Turbulence

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Publisher :
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis The Structure of Atmospheric Turbulence by : John Leask Lumley

Download or read book The Structure of Atmospheric Turbulence written by John Leask Lumley and published by . This book was released on 1964 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Olive Growing

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Publisher :
ISBN 13 : 9781741518696
Total Pages : 756 pages
Book Rating : 4.5/5 (186 download)

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Book Synopsis Olive Growing by :

Download or read book Olive Growing written by and published by . This book was released on 2010 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Hypnosis

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Publisher : Pergamon
ISBN 13 :
Total Pages : 200 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Hypnosis by : Léon Chertok

Download or read book Hypnosis written by Léon Chertok and published by Pergamon. This book was released on 1966 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Biodiversity and Sustainable Development

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Publisher :
ISBN 13 : 9788176259941
Total Pages : 0 pages
Book Rating : 4.2/5 (599 download)

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Book Synopsis Biodiversity and Sustainable Development by : Rabindra Nath Pati

Download or read book Biodiversity and Sustainable Development written by Rabindra Nath Pati and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the First Global Summit on Sustainable Development and Biodiversity, held at Raipur during 7-9 February 2009.

Mosaics Make a Site

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Publisher :
ISBN 13 :
Total Pages : 418 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Mosaics Make a Site by : International Committee for the Conservation of Mosaics. Conference

Download or read book Mosaics Make a Site written by International Committee for the Conservation of Mosaics. Conference and published by . This book was released on 1996 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:

1997 ASHRAE Handbook

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Publisher :
ISBN 13 : 9781883413453
Total Pages : pages
Book Rating : 4.4/5 (134 download)

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Book Synopsis 1997 ASHRAE Handbook by : American Society of Heating, Refrigerating and Air-Conditioning Engineers

Download or read book 1997 ASHRAE Handbook written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: