Proton Diffusion and T1 Relaxation in Polyacrylamide Gels: A Unified Approach Using Volume Averaging.
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TLDR
The model developed using the Bloch equations and the volume averaging method described the effects of water adsorption on the gel medium on both the diffusion coefficients and the relaxation measurements, and fit the general trends observed for water diffusion in gels.About:
This article is published in Journal of Magnetic Resonance.The article was published on 1998-06-01 and is currently open access. It has received 33 citations till now. The article focuses on the topics: Diffusion & Polyacrylamide.read more
Figures
FIG. 10. A typical normalized magnetization recovery curve for polyacrylamide gels. Comparison to the spatial averaging model.F, Data (2.5% T/0% C gel); —, model. 
FIG. 3. The NMR tube with polyacrylamide gel. 
FIG. 11. Effective relaxation coefficient for polyacrylamide gels as a function of the total polymer concentration.
Citations
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Structure and dynamics of hydrogels and organogels: An NMR spectroscopy approach
TL;DR: The use of NMR spectroscopy for the characterization of polymer hydrogels and organogels has recently seen enormous growth as mentioned in this paper, with special emphasis on the interplay between the morphology and molecular mobility of constituents and the intermolecular interactions.
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Clusters of superparamagnetic iron oxide nanoparticles encapsulated in a hydrogel: a particle architecture generating a synergistic enhancement of the T2 relaxation.
Chantal Paquet,Hendrick W. de Haan,Donald M. Leek,Hung-Yu Lin,Bo Xiang,Ganghong Tian,Ganghong Tian,Arnold J. Kell,Benoit Simard +8 more
TL;DR: This demonstration of a surface-active particle structure opens new possibilities in using similar structures for nanoparticle-based diagnostics using magnetic resonance imaging.
Journal ArticleDOI
Analysis of changes in MR properties of tissues after heat treatment.
TL;DR: To characterize changes in the MR parameters of tissues due to thermal coagulation, a series of T1, T2, diffusion, and magnetization transfer measurements were performed on a variety of ex vivo tissues, finding changes are particularly relevant for interpreting the changes in image contrast that are observed when MRI is used to guide and monitor thermalCoagulation therapy procedures.
Journal ArticleDOI
A diffusion tensor imaging analysis of gender differences in water diffusivity within human skeletal muscle.
TL;DR: The model predicts that a larger volume fraction of skeletal muscle in males is devoted to fibers than in females, but the true underlying source of the gender discrepancy remains unclear.
Journal ArticleDOI
Nanometric Sponges Made of Water-Soluble Hydrophobic Dendrimers
TL;DR: The behavior of a fifth generation phosphorus dendrimer having a hydrophobic interior and hydrophilic end groups is studied in solution in water using the pulsed-field gradient spin-echo NMR technique.
References
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Journal ArticleDOI
Spin diffusion measurements : spin echoes in the presence of a time-dependent field gradient
E. O. Stejskal,J. E. Tanner +1 more
TL;DR: In this article, a derivation of the effect of a time-dependent magnetic field gradient on the spin-echo experiment, particularly in the presence of spin diffusion, is given.
Journal ArticleDOI
Über die von der molekularkinetischen Theorie der Wärme geforderte Bewegung von in ruhenden Flüssigkeiten suspendierten Teilchen
TL;DR: In el marco del Proyecto subvencionado by the Fundación Antorchas (FAN) as discussed by the authors, el material was digitalizado, e.g., en la Biblioteca del Departamento de Fisica de la Facultad de Ciencias Exactas de la Universidad Nacional de La Plata.
Journal ArticleDOI
Fluid Mechanical Description of Fluidized Beds. Equations of Motion
T. B. Anderson,Roy Jackson +1 more
Journal ArticleDOI
Use of the Stimulated Echo in NMR Diffusion Studies
TL;DR: In this paper, the stimulated echo attenuation due to self-diffusion was derived for the general case of a time-dependent field gradient, and the result was found experimentally to be correct for the special case of field gradient applied in two equal, square pulses.
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