Results 251 to 260 of about 8,339,328 (288)

Single-File Diffusion Observation

Physical Review Letters, 1996
Molecular diffusion in zeolites of unidimensional channel structure is studied by pulsed field gradient NMR. In contrast to ordinary diffusion, the mean square displacement increases in proportion with the square root of the observation time. This behavior is explained by assuming that the molecules are unable to pass each other (``single-file ...
, Hahn, , Kärger, , Kukla
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Single-File Diffusion on a Periodic Substrate

Physical Review Letters, 2006
An assembly of "nonpassing" particles diffusing on a one-dimensional periodic substrate is shown to undergo single-file diffusion for both noiseless (ballistic) and stochastic dynamics. The dependence of the corresponding diffusion coefficients on the density and temperature of the particles and on the substrate parameters is determined by means of ...
A. Taloni, MARCHESONI, Fabio
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Model of osmosis in a single-file pore

Physical Review E, 2018
Single-file transport of water and other small molecules through narrow pores in osmosis has drawn considerable attention in recent years due to its extensive application in biology and industry. In this work, we propose a discrete model to describe nonideal osmosis through single-file pores. Every site is assumed to be occupied by a molecule according
Xiaokang, Liu, Liangsuo, Shu, Shiping, Jin   +2 more
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Single File Diffusion

1972
I don’t Know whether single file diffusion exists anywhere except in our imagination and on paper in the form of drawings and equations, but nevertheless the investigation of such mathematical models is a type of auxiliary activity which biologically interested physical chemists simply owe to physiologists for reasons of “intellectual economy”, to ...
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Evidence of Single-File Diffusion in Zeolites

Science, 1996
In the report “NMR studies of single-file diffusion in unidimensional channel zeolites” ([3 May, p. 702][1]), Volker Kukla et al . state that their study is the first direct evidence of single-file diffusion.
V, Gupta, S S, Nivarthi, D, Keffer, A V, McCormick, H T, Davis   +4 more
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Marching single file or 2 abreast

Blood, 2011
In this issue of Blood , Satchwell and colleagues provide compelling evidence that during the genesis of the plasma membrane in differentiating erythroblasts, key components of band 3/Rh multiprotein complexes can traffic to the membrane already linked or assemble together for the first time in the membrane ...
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Observation of single-file diffusion in a MOF

Physical Chemistry Chemical Physics, 2016
Quasi-elastic neutron scattering allows us to observe single-file diffusion of neopentane in MIL-47(V).
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Fluctuation theory of single-file diffusion

The Journal of Chemical Physics, 2009
In a one-dimensional suspension of Brownian particles, which cannot pass each other, the mean square displacement of a selected particle grows at long times with the square root of time, rather than linearly. It is shown that the coefficient of the square root, the so-called single-file mobility, can be derived from fluctuation theory, involving the ...
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Ageing single file motion

The European Physical Journal Special Topics, 2014
The mean squared displacement of a tracer particle in a single file of identical particles with excluded volume interactions shows the famed Harris scaling aEurox (2)(t)aEuro parts per thousand a parts per thousand integral K (1/2) t (1/2) as function of time.
Metzler, Ralf (Prof. Dr.), Sanders, L., Lomholt, M. A., Lizana, L., Fogelmark, K., Ambjoernsson, Tobias   +5 more
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Single File or En Masse

Science Signaling, 2009
TGF-β signaling causes metastasizing breast cancer cells to change from collective to single cell movement.
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