Studies of Atomic Free Radicals Stored in a Cryogenic Environment

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Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.3/5 (126 download)

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Book Synopsis Studies of Atomic Free Radicals Stored in a Cryogenic Environment by : David Mallin Lee

Download or read book Studies of Atomic Free Radicals Stored in a Cryogenic Environment written by David Mallin Lee and published by . This book was released on 2003 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Impurity-Helium solids are porous gel-like solids consisting of impurity atoms and molecules surrounded by thin layers of solid helium. They provide an ideal medium for matrix isolation of free radicals to prevent recombination and store chemical energy. In this work electron spin resonance, nuclear magnetic resonance, X ray diffraction and ultrasound techniques have all been employed to study the properties of these substances. Detailed studies via electron spin resonance of exchange tunneling chemical reactions involving hydrogen and deuterium molecular and atomic impurities in these solids have been performed and compared with theory. Concentrations of hydrogen approaching the quantum solid criterion have been produced.

Fundamental Physics in Space

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Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Fundamental Physics in Space by :

Download or read book Fundamental Physics in Space written by and published by . This book was released on 1999 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Roadmap

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Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Roadmap by :

Download or read book Roadmap written by and published by . This book was released on 1999 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

NASA Microgravity Research Program

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Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis NASA Microgravity Research Program by :

Download or read book NASA Microgravity Research Program written by and published by . This book was released on 1999 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Atom Probe Tomography

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Publisher : Springer Science & Business Media
ISBN 13 : 1461542812
Total Pages : 247 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Atom Probe Tomography by : Michael K. Miller

Download or read book Atom Probe Tomography written by Michael K. Miller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microanalytical technique of atom probe tomography (APT) permits the spatial coordinates and elemental identities of the individual atoms within a small volume to be determined with near atomic resolution. Therefore, atom probe tomography provides a technique for acquiring atomic resolution three dimensional images of the solute distribution within the microstructures of materials. This monograph is designed to provide researchers and students the necessary information to plan and experimentally conduct an atom probe tomography experiment. The techniques required to visualize and to analyze the resulting three-dimensional data are also described. The monograph is organized into chapters each covering a specific aspect of the technique. The development of this powerful microanalytical technique from the origins offield ion microscopy in 1951, through the first three-dimensional atom probe prototype built in 1986 to today's commercial state-of-the-art three dimensional atom probe is documented in chapter 1. A general introduction to atom probe tomography is also presented in chapter 1. The various methods to fabricate suitable needle-shaped specimens are presented in chapter 2. The procedure to form field ion images of the needle-shaped specimen is described in chapter 3. In addition, the appearance of microstructural features and the information that may be estimated from field ion microscopy are summarized. A brief account of the theoretical basis for processes of field ionization and field evaporation is also included.

NASA's Microgravity Research Program

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Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis NASA's Microgravity Research Program by :

Download or read book NASA's Microgravity Research Program written by and published by . This book was released on 2000 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Studies of Atomic Free Radicals Stored in a Cryogenic Environment

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721007561
Total Pages : 32 pages
Book Rating : 4.0/5 (75 download)

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Book Synopsis Studies of Atomic Free Radicals Stored in a Cryogenic Environment by : National Aeronautics and Space Administration (NASA)

Download or read book Studies of Atomic Free Radicals Stored in a Cryogenic Environment written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-11 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Impurity-Helium Solids are porous gel-like solids consisting of impurity atoms and molecules surrounded by thin layers of solid helium. They provide an ideal medium for matrix isolation of free radicals to prevent recombination and store chemical energy. In this work electron spin resonance, nuclear magnetic resonance, X-ray diffraction, and ultrasound techniques have all been employed to study the properties of these substances. Detailed studies via electron spin resonance of exchange tunneling chemical reactions involving hydrogen and deuterium molecular and atomic impurities in these solids have been performed and compared with theory. Concentrations of hydrogen approaching the quantum solid criterion have been produced. Structured studies involving X ray diffraction, ultrasound, and electron spin resonance have shown that the impurities in impurity helium solids are predominantly contained in impurity clusters, with each cluster being surrounded by thin layers of solid helium.Lee, David M. and Hubbard, Dorthy (Technical Monitor) and Alexander, Glen (Technical Monitor)Marshall Space Flight CenterFREE RADICALS; CRYOGENIC TEMPERATURE; HELIUM; IMPURITIES; SOLID CRYOGENS; POROUS MATERIALS; GELS; HYDROGEN; DEUTERIUM; CHEMICAL REACTIONS; ELECTRON PARAMAGNETIC RESONANCE; ULTRASONICS; X RAY DIFFRACTION

Kinetics and Mechanisms of the Gas-phase Reactions of the Hydroxyl Radical with Organic Compounds

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Publisher : American Institute of Physics
ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Kinetics and Mechanisms of the Gas-phase Reactions of the Hydroxyl Radical with Organic Compounds by : Roger Atkinson

Download or read book Kinetics and Mechanisms of the Gas-phase Reactions of the Hydroxyl Radical with Organic Compounds written by Roger Atkinson and published by American Institute of Physics. This book was released on 1989 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Oxygen-Free Museum Cases

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Publisher : Getty Publications
ISBN 13 : 0892365293
Total Pages : 81 pages
Book Rating : 4.8/5 (923 download)

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Book Synopsis Oxygen-Free Museum Cases by : Shin Maekawa

Download or read book Oxygen-Free Museum Cases written by Shin Maekawa and published by Getty Publications. This book was released on 1999-02-11 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the challenges in protecting and displaying environmentally sensitive objects is preventing deterioration caused by the presence of oxygen. This volume describes the design and construction of an oxygen-free, hermetically sealed, display and storage case developed by the Getty Conservation Institute for the long-term protection of such objects. The case was originally designed as a collaborative project between the Egyptian Antiquities Organization and the GCI to conserve the Royal Mummy Collection at the Egyptian Museum in Cairo. Seven chapters cover the protection of cultural objects from environmental deterioration by reducing exposure to oxygen and by using inert gases for biodeterioration control. Also included are details on how the design and construction of the oxygen-free case has been adapted for other applications, specifically for the original documents of the Constitution of India in New Dehli and for the mummy collections at the Egyptian Museum and at the Museu Victor Balaguer in Vilanova i la Geltru, Spain. The Research in Conservation reference series presents the findings of research conducted by the Getty Conservation Institute and its individual and institutional research partners, as well as state-of-the-art reviews of conservation literature. Each volume covers a topic of current interest to conservators and conservation scientists.

How Tobacco Smoke Causes Disease

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Publisher :
ISBN 13 :
Total Pages : 728 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis How Tobacco Smoke Causes Disease by : United States. Public Health Service. Office of the Surgeon General

Download or read book How Tobacco Smoke Causes Disease written by United States. Public Health Service. Office of the Surgeon General and published by . This book was released on 2010 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report considers the biological and behavioral mechanisms that may underlie the pathogenicity of tobacco smoke. Many Surgeon General's reports have considered research findings on mechanisms in assessing the biological plausibility of associations observed in epidemiologic studies. Mechanisms of disease are important because they may provide plausibility, which is one of the guideline criteria for assessing evidence on causation. This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. This evidence is relevant to understanding how smoking causes disease, to identifying those who may be particularly susceptible, and to assessing the potential risks of tobacco products.

Physics of Cryogenics

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Publisher : Elsevier
ISBN 13 : 012814520X
Total Pages : 728 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Physics of Cryogenics by : Bahman Zohuri

Download or read book Physics of Cryogenics written by Bahman Zohuri and published by Elsevier. This book was released on 2017-11-17 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physics of Cryogenics: An Ultralow Temperature Phenomenon discusses the significant number of advances that have been made during the last few years in a variety of cryocoolers, such as Brayton, Joule-Thomson, Stirling, pulse tube, Gifford-McMahon and magnetic refrigerators. The book reviews various approaches taken to improve reliability, a major driving force for new research areas. The advantages and disadvantages of different cycles are compared, and the latest improvements in each of these cryocoolers is discussed. The book starts with the thermodynamic fundamentals, followed by the definition of cryogenic and the associated science behind low temperature phenomena and properties. This book is an ideal resource for scientists, engineers and graduate and senior undergraduate students who need a better understanding of the science of cryogenics and related thermodynamics. - Defines the fundamentals of thermodynamics that are associated with cryogenic processes - Provides an overview of the history of the development of cryogenic technology - Includes new, low temperature tables written by the author - Deals with the application of cryogenics to preserve objects at very low temperature - Explains how cryogenic phenomena work for human cell and human body preservations and new medical approaches

Nuclear Science Abstracts

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ISBN 13 :
Total Pages : 964 pages
Book Rating : 4.3/5 (91 download)

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Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Toxicology Research Projects Directory

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ISBN 13 :
Total Pages : 820 pages
Book Rating : 4.3/5 (91 download)

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Download or read book Toxicology Research Projects Directory written by and published by . This book was released on 1978 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Polychlorinated Dibenzo-p-dioxins (PCDDs) and Polychlorinated Dibenzofurans (PCDFs)

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Publisher : Environment Canada, Environmental Protection Service
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Polychlorinated Dibenzo-p-dioxins (PCDDs) and Polychlorinated Dibenzofurans (PCDFs) by : A. Sheffield

Download or read book Polychlorinated Dibenzo-p-dioxins (PCDDs) and Polychlorinated Dibenzofurans (PCDFs) written by A. Sheffield and published by Environment Canada, Environmental Protection Service. This book was released on 1985 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Energy Research Abstracts

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ISBN 13 :
Total Pages : 560 pages
Book Rating : 4.:/5 (3 download)

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Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nitrogen oxides (NOx) why and how they are controlled

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Publisher : DIANE Publishing
ISBN 13 : 1428902805
Total Pages : 57 pages
Book Rating : 4.4/5 (289 download)

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Book Synopsis Nitrogen oxides (NOx) why and how they are controlled by :

Download or read book Nitrogen oxides (NOx) why and how they are controlled written by and published by DIANE Publishing. This book was released on 1999 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Government Reports Annual Index

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Publisher :
ISBN 13 :
Total Pages : 1690 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Government Reports Annual Index by :

Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1690 pages. Available in PDF, EPUB and Kindle. Book excerpt: