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Title: Diffusive properties of water in Artemia cysts as determined from quasi-elastic neutron scattering spectra. [Artemia shrimp]

Abstract

Results have been obtained on the quasi-elastic spectra of neutrons scattered from pure water, 20% agarose gel (hydration four grams H/sub 2/O per gram of dry solid) and cysts of the brine shrimp Artemia for hydrations between 0.10 and 1.2 grams H/sub 2/O per gram of dry solids. The spectra were interpreted using a two-component model that included contributions from the covalently bonded protons and the hydration water, and a mobile water fraction. The mobile fraction was described by a jump-diffusion correlation function for the translation motion and a simple diffusive orientational correlation function. The results for the line widths ..gamma..(Q/sup 2/) for pure water were in good agreement with previous measurements. The agarose results were consistent with NMR measurements that show a slightly reduced translational diffusion for the mobile water fraction. The Artemia results show that the translational diffusion coefficient of the mobile water fraction was greatly reduced from that of pure water. The line width was determined mainly by the rotational motion, which was also substantially reduced from the pure water value as determined from dielectric relaxation studies. The translational and rotational diffusion parameters were consistent with the NMR measurements of diffusion and relaxation. Values for the hydrationmore » fraction and the mean square thermal displacement as determined from the Q-dependence of line areas were also obtained.« less

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Rice Univ., Houston, TX (United States)
OSTI Identifier:
5864024
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Journal Article
Journal Name:
Biophys. J.; (United States)
Additional Journal Information:
Journal Volume: 45:5
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; WATER; MOLECULAR STRUCTURE; AGAR; BODY FLUIDS; COMPARATIVE EVALUATIONS; DIFFUSION; GELS; HYDRATION; NEUTRON SPECTRA; QUASI-ELASTIC SCATTERING; SHRIMP; ANIMALS; AQUATIC ORGANISMS; ARTHROPODS; BIOLOGICAL MATERIALS; CARBOHYDRATES; COLLOIDS; CRUSTACEANS; DECAPODS; DIRECT REACTIONS; DISPERSIONS; HYDROGEN COMPOUNDS; INVERTEBRATES; MATERIALS; NUCLEAR REACTIONS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; POLYSACCHARIDES; QUASI-FREE REACTIONS; SACCHARIDES; SCATTERING; SOLVATION; SPECTRA; 550201* - Biochemistry- Tracer Techniques

Citation Formats

Trantham, E C, Rorschach, H E, Clegg, J S, Hazlewood, C F, Nicklow, R M, and Wakabayashi, N. Diffusive properties of water in Artemia cysts as determined from quasi-elastic neutron scattering spectra. [Artemia shrimp]. United States: N. p., 1984. Web. doi:10.1016/S0006-3495(84)84239-3.
Trantham, E C, Rorschach, H E, Clegg, J S, Hazlewood, C F, Nicklow, R M, & Wakabayashi, N. Diffusive properties of water in Artemia cysts as determined from quasi-elastic neutron scattering spectra. [Artemia shrimp]. United States. https://doi.org/10.1016/S0006-3495(84)84239-3
Trantham, E C, Rorschach, H E, Clegg, J S, Hazlewood, C F, Nicklow, R M, and Wakabayashi, N. 1984. "Diffusive properties of water in Artemia cysts as determined from quasi-elastic neutron scattering spectra. [Artemia shrimp]". United States. https://doi.org/10.1016/S0006-3495(84)84239-3.
@article{osti_5864024,
title = {Diffusive properties of water in Artemia cysts as determined from quasi-elastic neutron scattering spectra. [Artemia shrimp]},
author = {Trantham, E C and Rorschach, H E and Clegg, J S and Hazlewood, C F and Nicklow, R M and Wakabayashi, N},
abstractNote = {Results have been obtained on the quasi-elastic spectra of neutrons scattered from pure water, 20% agarose gel (hydration four grams H/sub 2/O per gram of dry solid) and cysts of the brine shrimp Artemia for hydrations between 0.10 and 1.2 grams H/sub 2/O per gram of dry solids. The spectra were interpreted using a two-component model that included contributions from the covalently bonded protons and the hydration water, and a mobile water fraction. The mobile fraction was described by a jump-diffusion correlation function for the translation motion and a simple diffusive orientational correlation function. The results for the line widths ..gamma..(Q/sup 2/) for pure water were in good agreement with previous measurements. The agarose results were consistent with NMR measurements that show a slightly reduced translational diffusion for the mobile water fraction. The Artemia results show that the translational diffusion coefficient of the mobile water fraction was greatly reduced from that of pure water. The line width was determined mainly by the rotational motion, which was also substantially reduced from the pure water value as determined from dielectric relaxation studies. The translational and rotational diffusion parameters were consistent with the NMR measurements of diffusion and relaxation. Values for the hydration fraction and the mean square thermal displacement as determined from the Q-dependence of line areas were also obtained.},
doi = {10.1016/S0006-3495(84)84239-3},
url = {https://www.osti.gov/biblio/5864024}, journal = {Biophys. J.; (United States)},
number = ,
volume = 45:5,
place = {United States},
year = {Tue May 01 00:00:00 EDT 1984},
month = {Tue May 01 00:00:00 EDT 1984}
}