Download or read book Measurement of Flow Through Porous Media by Magnetic Resonance Imaging written by Barbaros Özdemirel and published by . This book was released on 1992 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluid Flow in Porous Media written by Margaret Saxby Edie and published by . This book was released on 1999 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Reports on NMR Spectroscopy written by Graham A. Webb and published by Academic Press. This book was released on 2012-10-05 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear magnetic resonance (NMR) is an analytical tool used by chemists and physicists to study the structure and dynamics of molecules. In recent years, no other technique has gained such significance as NMR spectroscopy. It is used in all branches of science in which precise structural determination is required and in which the nature of interactions and reactions in solution is being studied. Annual Reports on NMR Spectroscopy has established itself as a premier means for the specialist and non-specialist alike to become familiar with new techniques and applications of NMR spectroscopy. Annual Reports on NMR Spectroscopy has established itself as a premier means for the specialist and non-specialist alike to become familiar with new techniques and applications of NMR spectroscopy
Download or read book QUANTITATIVE ANALYSIS AND MEASUREMENT OF FLOW USING MAGNITUDE AND PHASE MAGNETIC RESONANCE IMAGING MAGNITUDE IMAGING PHASE IMAGING written by Yi Sun and published by . This book was released on 1991 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: could be more significant at high flow rates.
Download or read book Methods of the Physics of Porous Media written by and published by Academic Press. This book was released on 1999-07-09 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past 25 years, the field of VUV physics has undergone significant developments as new powerful spectroscopic tools, VUV lasers, and optical components have become available. This volume is aimed at experimentalists who are in need of choosing the best type of modern instrumentation in this applied field. In particular, it contains a detailed chapter on laboratory sources. This volume provides an up-to-date description of state-of-the-art equipment and techniques, and a broad reference bibliography. It treats phenomena from the standpoint of an experimental physicist, whereby such topics as imaging techniques (NMR, X-ray, ultrasonic, etc.) computer modeling, eletro-kinetic phenomena, diffusion, non-linear wave propagation surface adsorption/desorption, convective mixing, and fracture are specifically addressed.
Download or read book Characterization of Flow and Packing Structure in Porous Media Using NMR Imaging written by David Gregory Bibbs and published by . This book was released on 1995 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluid Flow and Heat Transfer in Porous Media Manufactured by a Space Holder Method written by Xianke Lu and published by Springer Nature. This book was released on 2020-08-27 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the effects of the material, porosity, pore size and pore shape on flow behaviour and heat transfer in microscale porous media manufactured using a space holder method. It also describes a novel approach to studying flow behaviour in non-transparent materials such as porous metals via flow visualization in transparent media that mimic the porous structure. The book employs a combination of microparticle image velocimetry – a modern, advanced technique – and pressure drop measurement – a more traditional method – that makes the mechanistic study of several phenomena possible. It covers the identification of various flow regimes and their boundaries, velocity profiles on the microscale, the heat transfer coefficient under forced convection, and the correlation between flow behaviour on the pore scale and the convective heat transfer performance of the porous media. Understanding the fundamentals of porous flow, especially on the microscale, is critical for applications of porous media in heat exchangers, catalytic convertors, chemical reactors, filtration and oil extraction. Accordingly, this book offers a valuable resource for all researchers, graduate students and engineers working in the areas of porous flow and porous materials.
Download or read book Translational Dynamics and Magnetic Resonance written by Paul T. Callaghan and published by OUP Oxford. This book was released on 2011-09-15 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taking the reader through the underlying principles of molecular translational dynamics, this book outlines the ways in which magnetic resonance, through the use of magnetic field gradients, can reveal those dynamics. The measurement of diffusion and flow, over different length and time scales, provides unique insight regarding fluid interactions with porous materials, as well as molecular organisation in soft matter and complex fluids. The book covers both time and frequency domain methodologies, as well as advances in scattering and diffraction methods, multidimensional exchange and correlation experiments and orientational correlation methods ideal for studying anisotropic environments. At the heart of these new methods resides the ubiquitous spin echo, a phenomenon whose discovery underpins nearly every major development in magnetic resonance methodology. Measuring molecular translational motion does not require high spectral resolution and so finds application in new NMR technologies concerned with 'outside the laboratory' applications, in geophysics and petroleum physics, in horticulture, in food technology, in security screening, and in environmental monitoring.
Download or read book NMR Studies of Translational Motion written by William S. Price and published by Cambridge University Press. This book was released on 2009-07-30 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Translational motion in solution, either diffusion or fluid flow, is at the heart of chemical and biochemical reactivity. Nuclear Magnetic Resonance (NMR) provides a powerful non-invasive technique for studying the phenomena using magnetic field gradient methods. Describing the physical basis of measurement techniques, with particular emphasis on diffusion, balancing theory with experimental observations and assuming little mathematical knowledge, this is a strong, yet accessible, introduction to the field. A detailed discussion of magnetic field gradient methods applied to Magnetic Resonance Imaging (MRI) is included, alongside extensive referencing throughout, providing a timely, definitive book to the subject, ideal for researchers in the fields of physics, chemistry and biology.
Download or read book Index Medicus written by and published by . This book was released on 2004 with total page 2068 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Download or read book Imaging the Structure of Preferential Flows in Porous Media Using Neutron Radiography written by Mark Robert Deinert and published by . This book was released on 2003 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Porous Media written by Kambiz Vafai and published by CRC Press. This book was released on 2010-08-24 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting state-of-the-art research advancements, Porous Media: Applications in Biological Systems and Biotechnology explores innovative approaches to effectively apply existing porous media technologies to biomedical applications. In each peer-reviewed chapter, world-class scientists and engineers collaborate to address significant problems and d
Download or read book Modeling and Measurement of Micro Flow in Dual Scale Porous Media written by Valentin Neacsu and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In Liquid Composite Molding processes (LCM) such as Resin Transfer Molding (RTM) and Vacuum Assisted Resin Transfer Molding (VARTM), a liquid resin is driven through a porous medium, which is usually a network of bundles (tows), made up of thousands of micron-thick cylindrical fibers. After the filling stage, the resin cross-links (cures) into a solid composite part. The structural properties of such part are dependent on the ability of the resin to fill the spaces between and within fiber tows, which at the same time displaces air and volatiles out of the mold cavity. The present work addresses micro flow in fibrous porous media using analytic analysis, numerical simulation and experiments. Experiments were conducted on a model fiber tow to illustrate that (i) fiber tows immersed in a liquid can be impregnated mainly due to capillarity in the absence of an imposed pressure gradient and that (ii) entrapped air impedes the impregnation. An analytical model was formulated to model transverse flow across an array of cylindrical fibers representing a fiber tow. The model accounts for both capillarity by means of an average capillary pressure, and the effects of air/gas entrapment and dissolution. Experimental validations of the analytical model using both custom-made electrical sensors embedded in porous samples, and Magnetic Resonance Imaging (MRI) confirm that when the entrapped air within the tow is provided with an easy route to escape, it does not slow down the inward flow of liquid, whereas when air is entrapped it significantly slows down or stalls the impregnation. In addition continuous monitoring of the micro flow front by MRI allowed for estimation of variation of air pressure inside. A numerical simulation of capillary flow across fiber tows is developed using the Lattice Boltzmann Method (LBM). The qualitative validation of the code that describes capillary flow through fiber tows is presented. The results from the Lattice Boltzmann approach are then projected at the mold level and compared with an original experimental technique designed to monitor the micro-saturation and micro-void content. This application underlines the potential of the LBM tool in simulating the flow inside fiber tows, and identifies the limitations as well. The collective contribution of the analytical, numerical and experimental approaches proposed in this work should prove helpful in improving the understanding of micro-flow in dual-scale porous media, with special emphasis on the role of capillary forces and of the entrapped air during the filling stage of Liquid Composite Molding processes.
Download or read book Experimental and Analytical Investigations of Flows in Porous Media Final Report August 15 1993 August 15 1996 written by and published by . This book was released on 1998 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report consists first of a discussion of specific results. Following that is a discussion of important issues. During the period July 1993--present, the authors have developed Magnetic Resonance Imaging (MRI) and other experimental techniques for the study of porous flow (Section 1). These techniques include fast spin echo methods and precision temperature control and measurements systems for use in the MRI environment. They have applied these techniques to extensive studies of Porous Media Convection (PMC) which they discuss below. Sections 2--4 summarize important experimental results, and Section 5 lists publications and related information. These studies clearly point to the need for improved models for porous flow. In related studies using a special kind of shadowgraph technique, they found corroborating support for the effects of microstructure on PMC and the need for improved models of porous flow, and of PMC in particular. They initially studied convective flows for pure fluids (water), and more recently, they have begun studies of miscible binary mixtures.
Download or read book Annual Reports on NMR Spectroscopy written by and published by Academic Press. This book was released on 2019-05-18 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annual Reports on NMR Spectroscopy, Volume 97, provides an in-depth accounting of progress in nuclear magnetic resonance (NMR) spectroscopy and its many applications. In recent years, no other technique has gained as much significance. It is used in all branches of science in which precise structural determination is required, and in which the nature of interactions and reactions in solution is being studied. This book has established itself as a premier resource for both specialists and non-specialists who are looking to become familiar with new techniques and applications pertaining to NMR spectroscopy. Serves as the premier resource for learning the new techniques and applications of NMR spectroscopy Provides a key reference for chemists and physicists using NMR spectroscopy to study the structure and dynamics of molecules Covers all aspects of molecular science, including MRI (Magnetic Resonance Imaging)
Download or read book Flows in Porous Media written by Mark Shattuck and published by . This book was released on 1995 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Water Solute Process Characterization written by Javier Alvarez-Benedi and published by CRC Press. This book was released on 2004-12-28 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: The practitioner or researcher often faces complex alternatives when selecting a method to characterize properties governing a soil process. After years of research and development, environmental and agricultural professionals now have an array of methods for characterizing soil processes. Well-established methods, however, may not be suitable for
