Results 31 to 40 of about 696 (54)

Chiral separation in microflows [PDF]

open access: yes, 2005
Molecules that only differ by their chirality, so called enantiomers, often possess different properties with respect to their biological function. Therefore, the separation of enantiomers presents a prominent challenge in molecular biology and belongs ...
A. J. Lichtenberg   +8 more
core   +2 more sources

Rotational Brownian motion on the sphere surface and rotational relaxation

open access: yes, 2006
The spatial components of the autocorrelation function of noninteracting dipoles are analytically obtained in terms of rotational Brownian motion on the surface of a unit sphere using multi-level jumping formalism based on Debye's rotational relaxation ...
Aydiner E   +9 more
core   +2 more sources

Experimental Test of a New Equality: Measuring Heat Dissipation in an Optically Driven Colloidal System

open access: yes, 2007
Measurement of energy dissipation in small nonequilibrium systems is generally a difficult task. Recently, Harada and Sasa [Phys.Rev.Lett. 95, 130602(2005)] derived an equality relating the energy dissipation rate to experimentally accessible quantities ...
F. Douarche   +6 more
core   +1 more source

Power-law random walks

open access: yes, 2006
We present some new results about the distribution of a random walk whose independent steps follow a $q-$Gaussian distribution with exponent $\frac{1}{1-q}; q \in \mathbb{R}$.
A. Plastino   +9 more
core   +4 more sources

Steady State Thermodynamics of Langevin Systems

open access: yes, 2000
We study Langevin dynamics describing nonequilibirum steady states. Employing the phenomenological framework of steady state thermodynamics constructed by Oono and Paniconi [Prog. Theor. Phys. Suppl.
B. C. Eu   +21 more
core   +1 more source

Human milk fatty acid composition and its association with maternal blood and adipose tissue fatty acid content in a cohort of women from Europe. [PDF]

open access: yesEur J Nutr, 2022
Giuffrida F   +24 more
europepmc   +1 more source

Thermalization of random motion in weakly confining potentials

open access: yes, 2010
We show that in weakly confining conservative force fields, a subclass of diffusion-type (Smoluchowski) processes, admits a family of "heavy-tailed" non-Gaussian equilibrium probability density functions (pdfs), with none or a finite number of moments ...
Garbaczewski, Piotr   +1 more
core   +1 more source

Multiple singularities of the equilibrium free energy in a one-dimensional model of soft rods

open access: yes, 2018
There is a misconception, widely shared amongst physicists, that the equilibrium free energy of a one-dimensional classical model with strictly finite-ranged interactions, and at non-zero temperatures, can not show any singularities as a function of the ...
Dhar, Deepak   +3 more
core   +1 more source

Nonconservative forcing and diffusion in refractive optical traps

open access: yes, 2011
Refractive optical trapping forces can be nonconservative in the vicinity of a stable equilibrium point even in the absence of radiation pressure. We discuss how nonconservative 3D force fields, in the vicinity of an equilibrium point, reduce to circular
Ashkin   +9 more
core   +1 more source

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