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Titolo:
CONCENTRATION-DEPENDENCE OF BROWNIAN-MOTION AND THE VISCOSITY OF HEMOGLOBIN-SOLUTIONS
Autore:
IINO M; OKUDA Y;
Indirizzi:
NIPPON MED COLL,DEPT PHYSIOL 1,BUNKYO KU,1-1-5 SENDAGI TOKYO 113 JAPAN TOKYO INST TECHNOL,DEPT APPL PHYS,MEGURO KU TOKYO 152 JAPAN
Titolo Testata:
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
fascicolo: 6A, volume: 36, anno: 1997,
pagine: 3786 - 3790
SICI:
0021-4922(1997)36:6A<3786:COBATV>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
DYNAMIC PROPERTIES; PROTEIN HYDRATION; WATER RELAXATIONS; ERYTHROCYTES; DIFFUSION;
Keywords:
CONCENTRATED PROTEIN SOLUTION; HYDRODYNAMIC MODEL; HYDRATION WATER; ROTATIONAL CORRELATION TIME; DIFFUSION COEFFICIENT; VISCOSITY; HEMOGLOBIN MOLECULE;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
M. Iino e Y. Okuda, "CONCENTRATION-DEPENDENCE OF BROWNIAN-MOTION AND THE VISCOSITY OF HEMOGLOBIN-SOLUTIONS", JPN J A P 1, 36(6A), 1997, pp. 3786-3790

Abstract

Brownian rotational and translational motion of hemoglobin molecules and the viscosity of concentrated hemoglobin solutions are quantitatively described by modified hydrodynamics commonly applied to suspensions of macroscopic hard spherical particles. The modified hydrodynamic forms, including explicitly the volume fraction of the hydration shell,a crowding factor, and Einstein's coefficient, are found to reproducewell the concentration dependence of the kinetic parameters, such as the viscosity protein rotational correlation time, and diffusion coefficient, for protein volume fractions from 0 to 0.34. It is also found that the apparent volume fraction of the hydration shell decreases with increasing protein volume fraction for protein volume fractions above 0.34, where the viscosity of the hemoglobin solution exceeds 0.1 Pa s, indicating that the viscosity of the hydration shell ranges from 0.1 Pa s to about 1 Pa s (300 ps-3 ns in NMR correlation time).

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Documento generato il 02/12/20 alle ore 18:02:46