نتایج جستجو برای: gyration radius

تعداد نتایج: 47761  

Journal: :Physical review letters 2003
Peter G Bolhuis Evert Jan Meijer Ard A Louis

We computed the phase-separation behavior and effective interactions of colloid-polymer mixtures in the "protein limit," where the polymer radius of gyration is much larger than the colloid radius. For ideal polymers, the critical colloidal packing fraction tends to zero, whereas for interacting polymers in a good solvent the behavior is governed by a universal binodal, implying a constant crit...

Journal: :Physical Review Letters 2021

Protein conformational fluctuations are highly complex and exhibit long-term correlations. Here, molecular dynamics simulations of small proteins demonstrate that these directly affect the protein's instantaneous diffusivity $D_I$. We find radius gyration $R_g$ exhibits $1/f$ fluctuations, synchronous with Our analysis demonstrates validity local Stokes-Einstein type relation $D_I\propto1/(R_g ...

2015
Dmitry I. Kopelevich John F. Nagle

The goal of this section is to investigate the tilt-length correlations for the following alternative definitions of the tail director: A. Molecular directors, which characterize tilt of an entire molecule, rather than an individual tail. This approach to the director definition was taken in the earlier work [1–3]. Here, we investigate two different definitions of molecular directors (see Fig. ...

Journal: :Chinese Physics 2022

In this work, a three-dimensional hybrid simulation program is used to investigate the process of explosion and expansion large number thermal debris ions in low density background plasma. By quantitatively calculating variation magnetic bubble constraint motion cloud, studied are influences plasma charge density, ion atomic weight, charge-mass ratio fragment on bubble. The results show that ha...

Journal: :Physical review letters 2005
Vasileios Symeonidis George Em Karniadakis Bruce Caswell

Dissipative particle dynamics simulations of several bead-spring representations of polymer chains in dilute solution are used to demonstrate the correct static scaling laws for the radius of gyration. Shear flow results for the wormlike chain simulating single DNA molecules compare well with average extensions from experiments, irrespective of the number of beads. However, coarse graining with...

2005
Iwan Jensen

We have calculated long series expansions for self-avoiding walks and polygons on the honeycomb lattice, including series for metric properties such as mean-squared radius of gyration as well as series for moments of the area-distribution for polygons. Analysis of the series yields accurate estimates for the connective constant, critical exponents and amplitudes of honeycomb self-avoiding walks...

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