Collisions Ions Surfaces Effets Initiaux Doxydation

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COLLISIONS IONS SURFACES. EFFETS INITIAUX D'OXYDATION

Author : SANDRINE.. LACOMBE
Publisher :
ISBN 13 :
Total Pages : 241 pages
Book Rating : 4.:/5 (49 download)

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Book Synopsis COLLISIONS IONS SURFACES. EFFETS INITIAUX D'OXYDATION by : SANDRINE.. LACOMBE

Download or read book COLLISIONS IONS SURFACES. EFFETS INITIAUX D'OXYDATION written by SANDRINE.. LACOMBE and published by . This book was released on 1994 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE EXPERIMENTALE DES COLLISIONS D'IONS ET D'ATOMES DE GAZ RARES SUR DES SURFACES A ETE EFFECTUEE GRACE A UNE ANALYSE ANGULAIRE ET/OU ENERGETIQUE DES PARTICULES LOURDES ET DES ELECTRONS EJECTES LORS DE LA COLLISION. L'APPAREIL UTILISE FONCTIONNE EN ULTRAVIDE. LES MESURES ONT PERMIS DE METTRE EN EVIDENCE LA PRESENCE DE PROCESSUS DE TRANSFERTS DE CHARGES ENTRE LES PROJECTILES ET LA CIBLE, AINSI QUE LA PRESENCE DE PROCESSUS D'EXCITATION VERS DES ETATS AUTOIONISANTS. LES PROCESSUS D'EXCITATION MIS EN JEU DEPENDENT DE LA NATURE DU PROJECTILE ET DE LA CIBLE ; ILS SONT DECRITS, PAR ANALOGIE AUX COLLISIONS EN PHASE GAZEUSE, GRACE AU MODELE QUASIMOLECULAIRE DE BARAT FANO LICHTEN. LES PARTICULES PEUVENT SE DESEXCITER DANS LE VIDE OU A L'INTERIEUR DU SOLIDE. CERTAINS MECANISMES DE REARRANGEMENT ONT LIEU LORS DE LA PHASE DE SORTIE DE LA COLLISION, ILS SONT CARACTERISTIQUES DES COLLISIONS SUR LES SURFACES. L'ETUDE DES EFFETS INITIAUX DE L'OXYDATION ONT PERMIS DE CARACTERISER L'ADSORPTION DE L'OXYGENE SUR DIFFERENTES SURFACES, ET DE MONTRER QUE LA VARIATION DU TRAVAIL D'EXTRACTION EST MAXIMALE POUR UNE EXPOSITION CORRESPONDANT A LA SATURATION DE LA SURFACE. NOS MESURES ONT PERMIS DE METTRE EN EVIDENCE LA DISPARITION PROGRESSIVE DES PICS ATTRIBUES A L'AUTOIONISATION DES PROJECTILES ET DES ATOMES-CIBLES. DES VARIATIONS DIFFERENTES EN FONCTION DE L'EXPOSITION A L'OXYGENE ONT ETE OBSERVEES POUR DIFFERENTS ETATS EXCITES. CES RESULTATS SONT ATTRIBUES A L'EFFET D'ECRAN DES ATOMES-CIBLES PAR L'OXYGENE, A LA VARIATION DU TRAVAIL D'EXTRACTION ET DE LA DENSITE D'ETATS DE LA CIBLE, EN PRESENCE D'OXYGENE

COLLISIONS IONS SURFACES. EFFETS INITIAUX D'OXYDATION

Author : Sandrine Lévêque-Fort
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (116 download)

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Book Synopsis COLLISIONS IONS SURFACES. EFFETS INITIAUX D'OXYDATION by : Sandrine Lévêque-Fort

Download or read book COLLISIONS IONS SURFACES. EFFETS INITIAUX D'OXYDATION written by Sandrine Lévêque-Fort and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'etude experimentale des collisions d'ions et d'atomes de gaz rares sur des surfaces a ete effectuee grace a une analyse angulaire et/ou energetique des particules lourdes et des electrons ejectes lors de la collision. L'appareil utilise fonctionne en ultravide. Les mesures ont permis de mettre en evidence la presence de processus de transferts de charges entre les projectiles et la cible, ainsi que la presence de processus d'excitation vers des etats autoionisants. Les processus d'excitation mis en jeu dependent de la nature du projectile et de la cible ; ils sont decrits, par analogie aux collisions en phase gazeuse, grace au modele quasimoleculaire de barat fano lichten. Les particules peuvent se desexciter dans le vide ou a l'interieur du solide. Certains mecanismes de rearrangement ont lieu lors de la phase de sortie de la collision, ils sont caracteristiques des collisions sur les surfaces. L'etude des effets initiaux de l'oxydation ont permis de caracteriser l'adsorption de l'oxygene sur differentes surfaces, et de montrer que la variation du travail d'extraction est maximale pour une exposition correspondant a la saturation de la surface. Nos mesures ont permis de mettre en evidence la disparition progressive des pics attribues a l'autoionisation des projectiles et des atomes-cibles. Des variations differentes en fonction de l'exposition a l'oxygene ont ete observees pour differents etats excites. Ces resultats sont attribues a l'effet d'ecran des atomes-cibles par l'oxygene, a la variation du travail d'extraction et de la densite d'etats de la cible, en presence d'oxygene

Index bibliographique du vide

Author :
Publisher :
ISBN 13 :
Total Pages : 880 pages
Book Rating : 4.F/5 ( download)

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Download or read book Index bibliographique du vide written by and published by . This book was released on 1969 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Modelling in Aquatic Chemistry

Author : OECD Nuclear Energy Agency
Publisher : Nuclear Energy Agency
ISBN 13 :
Total Pages : 788 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Modelling in Aquatic Chemistry by : OECD Nuclear Energy Agency

Download or read book Modelling in Aquatic Chemistry written by OECD Nuclear Energy Agency and published by Nuclear Energy Agency. This book was released on 1997 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Application of Particle and Laser Beams in Materials Technology

Author : P. Misaelides
Publisher : Springer Science & Business Media
ISBN 13 : 9780792333241
Total Pages : 702 pages
Book Rating : 4.3/5 (332 download)

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Book Synopsis Application of Particle and Laser Beams in Materials Technology by : P. Misaelides

Download or read book Application of Particle and Laser Beams in Materials Technology written by P. Misaelides and published by Springer Science & Business Media. This book was released on 1995-01-31 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of advanced materials with preselected properties is one of the main goals of materials research. Of especial interest are electronics, high-temperature and superhard materials for various applications, as well as alloys with improved wear, corrosion and mechanical resistance properties. The technical challenge connected with the production of these materials is not only associated with the development of new specialised preparation techniques but also with quality control. The energetic charged particle, electron and photon beams offer the possibility of modifying the properties of the near-surface regions of materials without seriously affecting their bulk, and provide unique analytical tools for testing their quality. Application of Particle and Laser Beams in Materials Technology provides an overview of this rapidly expanding field. Fundamental aspects concerning the interactions and collisions on atomic, nuclear and solid state scale are presented in a didactic way, along with the application of a variety of techniques for the solution of problems ranging from the development of electronics materials to corrosion research and from archaeometry to environmental protection. The book is divided into six thematic units: Fundamentals, Surface Analysis Techniques, Laser Beams in Materials Technology, Accelerator-Based Techniques in Materials Technology, Materials Modification and Synchrotron Radiation.

Exchange Reactions

Author :
Publisher :
ISBN 13 :
Total Pages : 440 pages
Book Rating : 4.:/5 (36 download)

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Download or read book Exchange Reactions written by and published by . This book was released on 1965 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Materials and Surface Engineering in Tribology

Author : Jamal Takadoum
Publisher : John Wiley & Sons
ISBN 13 : 1118623061
Total Pages : 179 pages
Book Rating : 4.1/5 (186 download)

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Book Synopsis Materials and Surface Engineering in Tribology by : Jamal Takadoum

Download or read book Materials and Surface Engineering in Tribology written by Jamal Takadoum and published by John Wiley & Sons. This book was released on 2013-05-10 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title is designed to provide a clear and comprehensive overview of tribology. The book introduces the notion of a surface in tribology where a solid surface is described from topographical, structural, mechanical, and energetic perspectives. It also describes the principal techniques used to characterize and analyze surfaces. The title then discusses what may be called the fundamentals of tribology by introducing and describing the concepts of adhesion, friction, wear, and lubrication. The book focuses on the materials used in tribology, introducing the major classes of materials used, either in their bulk states or as coatings, including both protective layers and other coatings used for decorative purposes. Of especial importance to the tribology community are sections that provide the latest information on Nanotribology, Wear, Lubrication, and Wear-Corrosion: Tribocorrosion and Erosion-Corrosion.

Practical Sonochemistry

Author : Timothy J Mason
Publisher : Woodhead Publishing
ISBN 13 : 1782420622
Total Pages : 166 pages
Book Rating : 4.7/5 (824 download)

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Book Synopsis Practical Sonochemistry by : Timothy J Mason

Download or read book Practical Sonochemistry written by Timothy J Mason and published by Woodhead Publishing. This book was released on 2002-11-01 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This updated version of Practical Sonochemistry for advanced students and teachers in chemistry and chemical engineering conveys the increasing growth in applications and equipment to power ultrasound. Equipment now on the market offers a wider range of frequencies with more reproducible experimentation and a variety of scale-up systems. The book provides detailed descriptions of newer ultrasonic equipment and its applications, and practical laboratory uses of ultrasound technology for industrial scale performance.Modern exercises familiarise readers with recent sonochemical operations. The book also includes methods for estimating ultrasonic energy entering the system (dosimetry), which will standardise sonochemical methodology and enable practitioners to reproduce results from other laboratories. - Conveys the increasing growth in applications and equipment to power ultrasound - Provides detailed descriptions of new ultrasonic equipment and its applications and practical laboratory uses of ultrasound technology for industrial scale performance - Includes methods for estimating ultrasonic energy entering the system (dosimetry), which will standardise sonochemical methodology and enable practitioners to reproduce results from other laboratories

Photosensitisation

Author : Giuliana Moreno
Publisher : Springer Science & Business Media
ISBN 13 : 3642731511
Total Pages : 500 pages
Book Rating : 4.6/5 (427 download)

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Book Synopsis Photosensitisation by : Giuliana Moreno

Download or read book Photosensitisation written by Giuliana Moreno and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiation induces a variety of chemical processes in biological tissues. This volume is a synthesis of up-to-the-minute reviews on such photochemical and photobiological sensitized reactions with particular relevance to photomedicine. The first part gives a description of experimental techniques for the study of the primary processes after radiation absorption by biological systems. It is followed by chapters on singlet oxygen and photomedicine, considering both phototherapy and photochemotherapy. These sections also discuss the next generation of potential photosensitizing drugs.

Elemental Speciation in Human Health Risk Assessment

Author : P. Apostoli
Publisher : World Health Organization
ISBN 13 : 9241572345
Total Pages : 257 pages
Book Rating : 4.2/5 (415 download)

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Book Synopsis Elemental Speciation in Human Health Risk Assessment by : P. Apostoli

Download or read book Elemental Speciation in Human Health Risk Assessment written by P. Apostoli and published by World Health Organization. This book was released on 2006 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Definitions of species and speciation - - Strructural aspects of speciation - - Analytical techniques and methodology - - Bioaccessibility and bioavailability - - Toxicokinetics and biological monitoring - - Molecular and cellular mechanisms of metal toxicity - - Health effects - - Conclusions and recommendations.

Nuclear Waste Conditioning

Author : France. Commissariat à l'énergie atomique (CEA)
Publisher : Le Moniteur Editions
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Nuclear Waste Conditioning by : France. Commissariat à l'énergie atomique (CEA)

Download or read book Nuclear Waste Conditioning written by France. Commissariat à l'énergie atomique (CEA) and published by Le Moniteur Editions. This book was released on 2009 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Meat Processing

Author : Fidel Toldrá
Publisher : John Wiley & Sons
ISBN 13 : 0813821827
Total Pages : 582 pages
Book Rating : 4.8/5 (138 download)

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Book Synopsis Handbook of Meat Processing by : Fidel Toldrá

Download or read book Handbook of Meat Processing written by Fidel Toldrá and published by John Wiley & Sons. This book was released on 2010-04-20 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook comprehensively presents the current status of the manufacturing of the most important meat products. Editor and renowned meat expert Fidel Toldrá heads an international collection of meat scientists who have contributed to this essential reference book. Coverage is divided into three parts. Part one, Technologies, begins with discussions on meat chemistry, biochemistry and quality and then provides background information on main technologies involved in the processing of meat, such as freezing, cooking, smoking, fermentation, emulsification, drying and curing. Also included are key chapters on packaging, spoilage prevention and plant cleaning and sanitation. Part two, Products, is focused on the description of the manufacture of the most important products, including cooked and dry-cured hams, cooked and fermented sausages, bacon, canned meat, paté, restructured meats and functional meat products. Each chapter addresses raw materials, ingredients and additives, processing technology, main types of products, production data, particular characteristics and sensory aspects, and future trends. Part three, Controls, offers current approaches for the control of the quality and safety of manufactured meat products, with coverage including sensory evaluation; chemical and biological hazards including GMOs; HACCP; and quality assurance. This book is an invaluable resource for all meat scientists, meat processors, R&D professionals and product developers. Key features: Unparalleled international expertise of editor and contributing authors Addresses the state of the art of manufacturing the most important meat products Special focus on approaches to control the safety and quality of processed meats Extensive coverage of production technologies, sanitation, packaging and sensory evaluation

Glyoxal

Author : J. Kielhorn
Publisher : WHO
ISBN 13 :
Total Pages : 54 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Glyoxal by : J. Kielhorn

Download or read book Glyoxal written by J. Kielhorn and published by WHO. This book was released on 2004 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication, part of a series from the International Programme on Chemical Safety, evaluates the risk to human health and the environment posed by exposures to glyoxal. Glyoxal is used as a chemical intermediate in the production of pharmaceuticals and dyestuffs, as a cross-linking agent in the production of a range of different polymers, as a biocide, and as a disinfecting agent. It is frequently detected in fermented food and beverages since it is produced by microbial activity as well as non-enzymatic autoxidation of oil or browning reactions of saccharides.

Oxides and Oxide Films

Author : John W. Diggle
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (72 download)

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Book Synopsis Oxides and Oxide Films by : John W. Diggle

Download or read book Oxides and Oxide Films written by John W. Diggle and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Mass Spectrometry of Polymers

Author : Giorgio Montaudo
Publisher : CRC Press
ISBN 13 : 1420037757
Total Pages : 601 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Mass Spectrometry of Polymers by : Giorgio Montaudo

Download or read book Mass Spectrometry of Polymers written by Giorgio Montaudo and published by CRC Press. This book was released on 2001-10-29 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mass Spectrometry (MS) has rapidly become an indispensable tool in polymer analysis, and modern MS today complements in many ways the structural data provided by Nuclear Magnetic Resonance (NMR) and Infrared (IR) methods. Recent advances have sparked a growing interest in this field and established a need for a summary of progress made and results

Chemical Thermodynamics of Neptunium and Plutonium

Author : Robert J. Lemire
Publisher : Elsevier
ISBN 13 : 9780444503794
Total Pages : 876 pages
Book Rating : 4.5/5 (37 download)

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Book Synopsis Chemical Thermodynamics of Neptunium and Plutonium by : Robert J. Lemire

Download or read book Chemical Thermodynamics of Neptunium and Plutonium written by Robert J. Lemire and published by Elsevier. This book was released on 2001-08-26 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike earlier books in this series, this review describes the selection of chemical thermodynamic data for species of two elements, neptunium and plutonium. Although this came about more by circumstance than design, it has allowed for a more consistent approach to chemical interpretation than might have occurred in two separate treatments. It has also drawn attention to cases where the available data do not show expected parallels, and where further work may be useful to confirm or refute apparent differences in the behaviour of neptunium and plutonium.

ICREEC 2019

Author : Ahmed Belasri
Publisher : Springer Nature
ISBN 13 : 9811554447
Total Pages : 659 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis ICREEC 2019 by : Ahmed Belasri

Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.