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Author : Cynthia Ann Palmer
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.:/5 (29 download)
Download or read book Measurements of Gas Diffusion Coefficients at Elevated Temperatures written by Cynthia Ann Palmer and published by . This book was released on 1984 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles A. Carey
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.:/5 (227 download)
Download or read book Experimental Determination of the Transport Properties of Gases. Part Ii. Heat Transfer and Ultrasonic Measurements written by Charles A. Carey and published by . This book was released on 1966 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods of experimentally determining the transport properties of high temperature gases have been developed and measurements of viscosity, thermal conducitvity, and diffusion coefficients obtained. The heat transfer rate through laminar boundary layers, the absorption of sound, and a schlieren method have been investigated for the determination of transport properties. Heat transfer measurements on the side wall of the shock tube have been used to obtain viscosities of argon, oxygen, nitrogen, and carbon dioxide up to 4000 K. The boundary layer equations were solved for side wall boundary layers in the shock tube in oxygen to assess the relative importance of viscosity and thermal conductivity in heat transfer to the side wall. Thermal conductivities were deduced from end wall heat transfer measurements in carbon dioxide up to 2000 K and oxygen up to 4000 K. End wall heat transfer measurements in nitrogen and argon have been compared to theory with excellent agreement. Various methods for measuring ultrasonic absorption are discussed. The viscosity of argon at temperatures up to 8000 K were determined with the ultrasonic method. Diffusion coefficient in 50-50 He-Ar mixtures have also been obtained from the ultrasonic measurements at room temperature with excellent agreement with other investigators. The theory of a schlieren method for the measurement of thermal conductivity using the end wall boundary layer in the shock tube is discussed. (Author).
Author : T. R. Marrero
Publisher :
ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.:/5 (227 download)
Download or read book Gaseous Diffusion Coefficients written by T. R. Marrero and published by . This book was released on 1972 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diffusion coefficients of binary mixtures of dilute gases and comprehensively compiled, critically evaluated, and correlated by new semi-empirical expressions. There are seventy-four systems for which the data are sufficiently extensive, consistent and accurate to allow diffusion coefficients to be recommended with confidence. Deviation plots are given for most of these systems. Almost every gaseous diffusion coefficient which was experimentally determined and reported prior to 1970 can be obtained from the annotated bibliography and table of gas pairs. A detailed analysis of experimental methods is given, and intercomparison of their results helps establish reliability limits for the data, which depend strongly on temperature. Direct measurements are supplemented by calculations based on knowledge of intermolecular forces derived from independent sources-molecular beam scattering for high temperatures, and London dispersion constants for low temperatures. In addition, diffusion coefficients for several mixtures are obtained from experimental data on mixture viscosities and thermal diffusion factors. Combination of all these results gives diffusion coefficients over a very extensive temperature range from very low temperatures to 10,000 K. All data are corrected for composition dependence and for quantum effects. New semi-empirical equations are derived for making such corrections easily. (Author).
Author :
Publisher :
ISBN 13 :
Total Pages : 790 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1978 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author : Eric Thompson Nelson
Publisher :
ISBN 13 :
Total Pages : 342 pages
Book Rating : 4.:/5 (31 download)
Download or read book The Unsteady State Diffusion of Gases from Anthracite at High Temperatures written by Eric Thompson Nelson and published by . This book was released on 1961 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fabio Sauli
Publisher : Cambridge University Press
ISBN 13 : 1107043018
Total Pages : 513 pages
Book Rating : 4.1/5 (7 download)
Download or read book Gaseous Radiation Detectors written by Fabio Sauli and published by Cambridge University Press. This book was released on 2014-06-12 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the fundamentals and applications of gaseous radiation detection, ideal for researchers and experimentalists in nuclear and particle physics.
Author :
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (317 download)
Download or read book Experimental Determination of Transport Properties of High Temperature Gases written by and published by . This book was released on 1967 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paul D. Freeze
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (31 download)
Download or read book Bibliography on the Measurement of Gas Temperature written by Paul D. Freeze and published by . This book was released on 1951 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John W. Hastie
Publisher :
ISBN 13 :
Total Pages : 936 pages
Book Rating : 4.0/5 ( download)
Download or read book Characterization of High Temperature Vapors and Gases written by John W. Hastie and published by . This book was released on 1979 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Endre Nagy
Publisher : Elsevier
ISBN 13 : 0124160255
Total Pages : 342 pages
Book Rating : 4.1/5 (241 download)
Download or read book Basic Equations of the Mass Transport Through a Membrane Layer written by Endre Nagy and published by Elsevier. This book was released on 2012 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a detailed analysis of the mass transport through membrane layers and its effect on different separation processes, this book provides a comprehensive look at the theoretical and practical aspects of membrane transport properties and functions. Basic equations for every membrane are provided to predict the mass transfer rate, the concentration distribution, the convective velocity, the separation efficiency, and the effect of chemical or biochemical reaction taking into account the heterogeneity of the membrane layer to help better understand the mechanisms of the separation processes. The reader will be able to describe membrane separation processes and the membrane reactors as well as choose the most suitable membrane structure for separation and for membrane reactor. Containing detailed discussion of the latest results in transport processes and separation processes, this book is essential for chemistry students and practitioners of chemical engineering and process engineering. Detailed survey of the theoretical and practical aspects of every membrane process with specific equations Practical examples discussed in detail with clear steps Will assist in planning and preparation of more efficient membrane structure separation
Author : J. Calvin Giddings
Publisher : CRC Press
ISBN 13 : 9780824762063
Total Pages : 304 pages
Book Rating : 4.7/5 (62 download)
Download or read book Advances in Chromatography written by J. Calvin Giddings and published by CRC Press. This book was released on 1975-05-01 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides up-to-date information on the developments in chromatographic methods and applications to provide readers with stimulating, critical, readable, and relevant reviews of this subject. It includes information on high-pressure liquid chromatography in pharmacology and toxicology.
Author : Karol Jackowski
Publisher : Royal Society of Chemistry
ISBN 13 : 1782623817
Total Pages : 419 pages
Book Rating : 4.7/5 (826 download)
Download or read book Gas Phase NMR written by Karol Jackowski and published by Royal Society of Chemistry. This book was released on 2016-02-09 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the recent NMR studies with the application of gaseous molecules. Among the comprehensively discussed aspects of the area it includes in particular: new multinuclear experiments that deliver spectral parameters of isolated molecules and provide the most accurate values of nuclear magnetic shielding, isotropic spin–spin coupling and relaxation times; advanced, precise and correct theoretical descriptions of spectral parameters of molecules as well as the application of gas-phase NMR measurements to chemical analysis and medicine. The progress of research in these fields is enormous and has rapidly changed our knowledge and understanding of molecular parameters in NMR spectroscopy. For example, accurate studies of the shielding for isolated molecules allow the exact determination of nuclear magnetic dipole moments, the calculated values of spectral parameters can be verified by precise gas-phase NMR measurements, and the application of hyperpolarized noble gases provides excellent MRI pictures of lungs. Aimed at graduates and researchers in spectroscopy, analytical chemistry and those researching the applications of NMR in medicine, this book presents the connections between sophisticated experiments, the theory of magnetic parameters and the exploration of new methods in practice.
Author : Carl Barus
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.F/5 ( download)
Download or read book The Diffusion of Gases Through Liquids and Allied Experiments written by Carl Barus and published by . This book was released on 1913 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (227 download)
Download or read book Thermodynamic and Diffusivity Measurements in Potential Ultra High Temperature Composite Materials written by and published by . This book was released on 1990 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of the vaporization kinetics of CaZrO3 and BaZrO3 have been carried out in the temperature range 1600-2000 C using a vacuum microbalance technique. Oxygen tracer diffusion coefficients in CaZrO3, BaZrO3 and SrZrO3 have also been measured using the gas exchange technique. Tracer concentration profiles were determined using nuclear reaction analysis. Both CaZrO3 and BaZrO3 have a relatively high rate of evaporation at high temperatures. However, dry- pressed CaZrO3 shows a smaller rate of evaporation than hot-pressed but impure BaZrO3. Results of the diffusion experiments indicate that CaZrO3 exhibits the largest penetration with BaZrO3 showing the smallest. Apparent oxygen tracer diffusion coefficients were measured for CaZrO3 and SrZrO3 at 1000C. Over the temperature range of 900-1100C, the apparent oxygen tracer diffusion coefficient in BaZrO3 is described by D=5.0 x 10-3 sq.cm/sec exp ( -247 KJ/mole/RT). Calcium Zirconate, Barium Zirconate, Strontium Zirconate.
Author : U.S. Atomic Energy Commission
Publisher :
ISBN 13 :
Total Pages : 454 pages
Book Rating : 4.3/5 (91 download)
Download or read book Fuel Elements Conference written by U.S. Atomic Energy Commission and published by . This book was released on 1958 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roland N. Pittman
Publisher : Biota Publishing
ISBN 13 : 1615047212
Total Pages : 117 pages
Book Rating : 4.6/5 (15 download)
Download or read book Regulation of Tissue Oxygenation, Second Edition written by Roland N. Pittman and published by Biota Publishing. This book was released on 2016-08-18 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This presentation describes various aspects of the regulation of tissue oxygenation, including the roles of the circulatory system, respiratory system, and blood, the carrier of oxygen within these components of the cardiorespiratory system. The respiratory system takes oxygen from the atmosphere and transports it by diffusion from the air in the alveoli to the blood flowing through the pulmonary capillaries. The cardiovascular system then moves the oxygenated blood from the heart to the microcirculation of the various organs by convection, where oxygen is released from hemoglobin in the red blood cells and moves to the parenchymal cells of each tissue by diffusion. Oxygen that has diffused into cells is then utilized in the mitochondria to produce adenosine triphosphate (ATP), the energy currency of all cells. The mitochondria are able to produce ATP until the oxygen tension or PO2 on the cell surface falls to a critical level of about 4–5 mm Hg. Thus, in order to meet the energetic needs of cells, it is important to maintain a continuous supply of oxygen to the mitochondria at or above the critical PO2 . In order to accomplish this desired outcome, the cardiorespiratory system, including the blood, must be capable of regulation to ensure survival of all tissues under a wide range of circumstances. The purpose of this presentation is to provide basic information about the operation and regulation of the cardiovascular and respiratory systems, as well as the properties of the blood and parenchymal cells, so that a fundamental understanding of the regulation of tissue oxygenation is achieved.
Author : William Davison
Publisher : Cambridge University Press
ISBN 13 : 110713076X
Total Pages : 321 pages
Book Rating : 4.1/5 (71 download)
Download or read book Diffusive Gradients in Thin-Films for Environmental Measurements written by William Davison and published by Cambridge University Press. This book was released on 2016-09-15 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: An essential guide to the applications and usage of the diffusive gradients in thin-films (DGT) technique for students and professionals.
