Approximating monomer diffusion in the Raman-Nath regime

2010 ◽  
Author(s):  
C. E. Close ◽  
M. R. Gleeson ◽  
J. T. Sheridan
Keyword(s):  
Monomer Diffusion

scholarly journals Monomer diffusion into polymer domains in sickle hemoglobin

1990 ◽  
Vol 58 (4) ◽  
pp. 1067-1073 ◽  
Author(s):  
M.R. Cho ◽  
F.A. Ferrone
Keyword(s):  
Sickle Hemoglobin ◽  
Monomer Diffusion

scholarly journals AMPA receptors in the synapse turnover by monomer diffusion

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Jyoji Morise ◽  
Kenichi G. N. Suzuki ◽  
Ayaka Kitagawa ◽  
Yoshihiko Wakazono ◽  
Kogo Takamiya ◽  
...  
Keyword(s):  
Endoplasmic Reticulum ◽  
Plasma Membrane ◽  
Synaptic Plasticity ◽  
Learning And Memory ◽  
Ampa Receptors ◽  
Single Molecules ◽  
Lateral Diffusion ◽  
Synaptic Function ◽  
Synaptic Activity ◽  
Monomer Diffusion

AbstractThe number and subunit compositions of AMPA receptors (AMPARs), hetero- or homotetramers composed of four subunits GluA1–4, in the synapse is carefully tuned to sustain basic synaptic activity. This enables stimulation-induced synaptic plasticity, which is central to learning and memory. The AMPAR tetramers have been widely believed to be stable from their formation in the endoplasmic reticulum until their proteolytic decomposition. However, by observing GluA1 and GluA2 at the level of single molecules, we find that the homo- and heterotetramers are metastable, instantaneously falling apart into monomers, dimers, or trimers (in 100 and 200 ms, respectively), which readily form tetramers again. In the dendritic plasma membrane, GluA1 and GluA2 monomers and dimers are far more mobile than tetramers and enter and exit from the synaptic regions. We conclude that AMPAR turnover by lateral diffusion, essential for sustaining synaptic function, is largely done by monomers of AMPAR subunits, rather than preformed tetramers.

NMR Microscopy: A Tool for Measuring Monomer Diffusion in Supercritical CO2

2006 ◽  
Vol 207 (17) ◽  
pp. 1539-1545 ◽  
Author(s):  
Kristofer J. Thurecht ◽  
David J. T. Hill ◽  
Andrew K. Whittaker
Keyword(s):  
Supercritical Co2 ◽  
Nmr Microscopy ◽  
Monomer Diffusion

KINETICS OF OSTWALD RIPENING: CROSSOVER FROM WAGNER'S MODE TO THE LIFSHITZ–SLEZOV MODE

2007 ◽  
Vol 21 (15) ◽  
pp. 941-953 ◽  
Author(s):  
P. YU. GUBANOV ◽  
I. L. MAKSIMOV ◽  
V. P. MOROZOV
Keyword(s):  
Grain Size ◽  
Distribution Function ◽  
Ostwald Ripening ◽  
Early Stage ◽  
Intermediate Stage ◽  
Size Distribution Function ◽  
Supersaturated Solution ◽  
Kinetics Of ◽  
New Phase ◽  
Monomer Diffusion

The kinetics of the Ostwald ripening in a homogeneous supersaturated solution is studied both numerically and analytically. The time evolution of the grain-size distribution function in a new phase is theoretically described, taking into account the finite value of the maximal size of a grain. Two situations are considered: the kinetics of grain growth is controlled either by the grain-monomer reaction process (an early stage) or by the monomer diffusion process (a late stage). A transition to the final distribution is shown to take place through an intermediate-asymptotical mode of the Ostwald ripening kinetics, the crossover of the kinetic indices is demonstrated, and the duration of intermediate stage is evaluated.

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