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Thursday, May 14, 2020 | History

2 edition of Nuclear spin relaxation in water in heterogeneous systems. found in the catalog.

Nuclear spin relaxation in water in heterogeneous systems.

Janet Mary Ramsden

Nuclear spin relaxation in water in heterogeneous systems.

by Janet Mary Ramsden

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  • 19 Currently reading

Published by University of East Anglia in Norwich .
Written in English


Edition Notes

Thesis (Ph.D.) - University of East Anglia, School of Chemical Sciences, 1977.

ID Numbers
Open LibraryOL13845746M

The focus is on illustrating and explaining the physical nature of relaxation phenomena. Nuclear Spin Relaxation in Liquids: Theory, Experiments and Applications, 2 nd edition, provides useful supplementary reading for graduate students and is a valuable reference for NMR spectroscopists, whether in chemistry, physics or by: 1. Transverse (spin-spin) relaxation measurements define three motionally unique water compartments in the work-free dough preparations. The apparent occupancy fraction and relative mobility of each water domain are found to be functions of moisture content, temperature, and flour by: 8.

Theory of nuclear spin relaxation in paramagnetic systems in solution. The fictitious-spin- {1}/{2} operator formalism allows a comprehensive study of the longitudinal and transverse nuclear relaxations of a nuclear spin I = 1 in heterogeneous media, in the presence of a residual time-averaged quadrupolar interaction. An extension of this formalism makes possible the calculation of the cross correlation between the quadrupolar and dipolar (paramagnetic) by:

Nuclear magnetic resonance and spin relaxation in biological systemsB Robert G. Bryanta,T, Jean-Pierre Korbb aChemistry Department, University of Virginia, PO Box , Charlottesville, VA , USA bLaboratoire de Physique de la Matie`re Condense´e, CNRS UMR , Ecole Polytechnique, Palaiseau, France Abstract Proton nuclear spin-lattice relaxation in biological systems .   The nuclear spin relaxation times T 1 and T 2 have been calculated for two identical nuclei of spin I = ½ fixed in an ellipsoid undergoing rotational Brownian motion. The ellipsoid is subject to small random changes in orientation in which the rotation probabilities about Cited by:


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Nuclear spin relaxation in water in heterogeneous systems by Janet Mary Ramsden Download PDF EPUB FB2

NMR Relaxation Nuclear spin relaxation in water in heterogeneous systems. book Heterogeneous Systems. Water 1H spin-lattice relaxation as a fingerprint of porous media Nuclear magnetic relaxation dispersion measurement of water mobility at. Water–proton nuclear magnetic relaxation in heterogeneous systems: Hydrated lysozyme results.

Magnetic Resonance in Medicine22 (1), DOI: /mrm Robert G. Bryant, Daniel Ari Mendelson, Cathy Coolbaugh Lester. The magnetic field dependence of proton spin relaxation in by:   Nuclear Spin Relaxation in Liquids book. Theory, Experiments, and Applications, Second Edition.

relaxation studies of molecular dynamics and structure and special topics such as relaxation in systems with quadrupolar nuclei, in paramagnetic systems and in long-living spin by: 1. DYNAMICS OF WATER IN HETEROGENEOUS SYSTEMS 63 The dependence of T, T2 and Tl, on Tr, w0 and w1 is illustrated for a simple single correla-tion time isotropic motion model in figures 1 and 2.

For more detailed accounts of nuclear magnetic relaxation the reader is referred to books by Abragam (i96i), Slichter (I) and Farrar & Becker (I97I).

Nuclear Spin Relaxation in Liquids: Theory, Experiments, and Applications, Second Edition Jozef Kowalewski, Lena Maler Nuclear magnetic resonance (NMR) is widely used across many fields of science because of the rich data it produces, and some of the most valuable data come from studies of nuclear spin relaxation in solution.

Nuclear Spin Relaxation in Liquids: Theory, Experiments, and Applications Jozef Kowalewski, Lena Maler Nuclear magnetic resonance (NMR) is widely used across many fields because of the rich data it produces, and some of the most valuable data come from the study of nuclear spin relaxation.

Part of the Water book series (WCT, volume 7) Abstract Nuclear Magnetic Resonance Relaxation Rate Spin Exchange Nuclear Magnetic Resonance Signal Derbyshire W. () The Dynamics of Water in Heterogeneous Systems with Emphasis on Subzero Temperatures.

In: Franks F. (eds) Water and Aqueous Solutions at Subzero Temperatures. Cited by: Nuclear magnetic resonance relaxation and diffusion in the presence of internal gradients: The effect of magnetic field strength.

Physical Review E81 (2) DOI: /PhysRevE D.S. Novikov, V.G. Kiselev. Transverse NMR relaxation in magnetically heterogeneous by: These fractions of water are characterized with different nuclear magnetic resonance (NMR) relaxation times and are identified with the different parts of tissue water.

The water associated with the macromolecules was found to be approximately 8% of the total tissue water and not to exchange rapidly with the rest of the intracellular by: Nuclear spins are ideal probes for molecular information in liquids and solutions.

This is because – (i) the spin dynamics is controlled by the structure and motion of the molecules; – (ii) the NMR experiment, carried out to measure the spin dynamics, does not affect the studied molecular properties. The relaxation of water in aqueous heterogeneous systems is described in terms of the effects of the substrate structure and order on the motions and arrangements of the water molecules.

The water proton spin-lattice relaxation rate has been measured for a condensed 50% deuterated erythrocyte water system. Nuclear relaxation data, obtained in non-selective and selective modes, indicate that cross relaxation between erythrocyte and water protons by: 5.

Spin-lattice (T 1) and, where appropriate, tranverse (T 2) relaxation times are reported for the protons in DMSO + water mixtures over a range of temperature and -diffusion coefficients are also measured. A minimum in T 1 for a d 6-DMSO + H 2 O sample enables rotational correlation times for water molecules to be evaluated in mixtures with mol fractions of water, x(H 2 O), ⩽Cited by: In the present study, pulsed proton nuclear magnetic resonance was used to study the relaxation characteristics of dough systems at moisture levels of 12–45%.

The relaxation curves obtained using a 90‐degree pulse (Onepulse) sequence and the Carr‐Purcell‐Meiboom‐Gill pulse sequence were analyzed using a multiexponential discrete model Cited by: title = "Study of water in dough using nuclear magnetic resonance", abstract = "The amount and state of water play an important role in the preparation and properties of wheat flour doughs Cited by:   Nuclear magnetic resonance (NMR) is widely used across many fields because of the rich data it produces, and some of the most valuable data come from the study of nuclear spin relaxation in solution.

While described to varying degrees in all major NMR books, spin relaxation is often perceived as a difficult, if not obscure, topic, and an accessibleCited by: The field dependence of the protein-proton spin-lattice relaxation is presented in the presence of D2O where a cross-relaxation coupling is absent.

The coupled relaxation model accounts well for the NMR relaxation data as a function of magnetic field strength which is similar to measurements on other heterogeneous systems such as tissues.

PMID Cited by: Nuclear Spin Relaxation in Water in Heterogeneous Systems. Author: Ramsden, J. ISNI: X Awarding Body: University of East Anglia Current Institution: University of East Anglia Date of Award: Availability of Full Text: Access from EThOS. Nuclear Spin Relaxation in Liquids: Theory, Experiments, and Applications, Second Edition - Kindle edition by Kowalewski, Jozef, Maler, Lena.

Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Nuclear Spin Relaxation in Liquids: Theory, Experiments, and Applications, Second Edition.5/5(1).

The two important quantities are the relaxation time T 1, describing the energy transfer from the nuclear spin system to the whole of the sample, representing the heat reservoir, and the Cited by:.

Nuclear Spin Relaxation in Liquids: Theory, Experiments, and Applications, Second Edition - CRC Press Book Nuclear magnetic resonance (NMR) is widely used across many fields of science because of the rich data it produces, and some of the most valuable data come from studies of nuclear spin relaxation in [email protected]{osti_, title = {Cross-correlation spin noise spectroscopy of heterogeneous interacting spin systems}, author = {Roy, Dibyendu and Yang, Luyi and Crooker, Scott A.

and Sinitsyn, Nikolai A.}, abstractNote = {Interacting multi-component spin systems are ubiquitous in nature and in the laboratory. As such, investigations of inter-species spin interactions are of vital importance.This book describes nuclear magnetic resonance (NMR) methods which are used to study translational dynamics of molecules in different complex systems including systems made of synthetic and natural polymers, tissues and the porous heterogeneous systems of different types, such as cement and wood.