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Showing 1 to 12 of 136 entries
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Mean first-passage times of non-Markovian random walkers in confinement.

Nature

Guérin T, Levernier N, Bénichou O, Voituriez R.
PMID: 27306185
Nature. 2016 Jun 16;534(7607):356-9. doi: 10.1038/nature18272.

The first-passage time, defined as the time a random walker takes to reach a target point in a confining domain, is a key quantity in the theory of stochastic processes. Its importance comes from its crucial role in quantifying...

Stokes formula and density perturbances for driven tracer diffusion in an adsorbed monolayer.

Physical review letters

Benichou O, Cazabat AM, De Coninck J, Moreau M, Oshanin G.
PMID: 11015951
Phys Rev Lett. 2000 Jan 17;84(3):511-4. doi: 10.1103/PhysRevLett.84.511.

We study the intrinsic friction of monolayers adsorbed on solid surfaces from a gas phase or vapor. Within the framework of the Langmuir model of delocalized adsorption, we calculate the resistance offered by the mobile adsorbate's particles to some...

Atomic slide puzzle: self-diffusion of an impure atom.

Physical review. E, Statistical, nonlinear, and soft matter physics

Bénichou O, Oshanin G.
PMID: 11497548
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Aug;64(2):020103. doi: 10.1103/PhysRevE.64.020103. Epub 2001 Jul 24.

In a series of recent papers [Phys. Rev. Lett. 86, 1562 (2001); Nature (London) 408, 665 (2000)] van Gastel and co-workers have presented what may be the first experimental evidence, based on a series of scanning tunnel microscope images,...

Catalytic reactions with bulk-mediated excursions: mixing fails to restore chemical equilibrium.

Physical review. E, Statistical, nonlinear, and soft matter physics

Coppey M, Bénichou O, Klafter J, Moreau M, Oshanin G.
PMID: 15089369
Phys Rev E Stat Nonlin Soft Matter Phys. 2004 Mar;69(3):036115. doi: 10.1103/PhysRevE.69.036115. Epub 2004 Mar 24.

In this paper we analyze the effect of the bulk-mediated excursions (BME) of reactive species on the long-time behavior of the catalytic Langmuir-Hinshelwood-like A+B-->0 reactions in systems in which a catalytic plane (CP) is in contact with a liquid...

Determinants of severity for superficial cellutitis (erysipelas) of the leg: a retrospective study.

European journal of internal medicine

Musette P, Benichou J, Noblesse I, Hellot MF, Carvalho P, Young P, Levesque H, Courtois H, Caron F, Lauret P, Joly P.
PMID: 15581749
Eur J Intern Med. 2004 Nov;15(7):446-450. doi: 10.1016/j.ejim.2004.06.010.

BACKGROUND: Superficial cellulitis (erysipelas) of the leg is a frequent infectious disease with a favorable outcome, whereas some patients present a serious disease. The determinants of severity for superficial cellulitis (erysipelas) of the leg have not yet been clearly...

Hyper-Rayleigh scattering of gold nanorods and their relationship with linear assemblies of gold nanospheres.

Faraday discussions

Nappa J, Revillod G, Abid JP, Russier-Antoine I, Jonin C, Benichou E, Girault HH, Brevet PF.
PMID: 14750669
Faraday Discuss. 2004;125:145-56; discussion 195-219. doi: 10.1039/b303308b.

The surface plasmon enhanced hyper-Rayleigh scattering light collected from an aqueous solution of gold nanorods is reported. A non negligible part of the signal is attributed to a photoluminescence background attributed to the electron hole recombination following multiphoton excitation...

Survival probability of a particle in a sea of mobile traps: a tale of tails.

Physical review. E, Statistical, nonlinear, and soft matter physics

Yuste SB, Oshanin G, Lindenberg K, Bénichou O, Klafter J.
PMID: 18850784
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Aug;78(2):021105. doi: 10.1103/PhysRevE.78.021105. Epub 2008 Aug 07.

We study the long-time tails of the survival probability P(t) of an A particle diffusing in d-dimensional media in the presence of a concentration rho of traps B that move subdiffusively, such that the mean square displacement of each...

Occupation times of random walks in confined geometries: from random trap model to diffusion-limited reactions.

Physical review. E, Statistical, nonlinear, and soft matter physics

Condamin S, Tejedor V, Bénichou O.
PMID: 18233611
Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Nov;76(5):050102. doi: 10.1103/PhysRevE.76.050102. Epub 2007 Nov 15.

We consider a random walk in confined geometry, starting from a site and eventually reaching a target site. We calculate analytically the distribution of the occupation time on a third site, before reaching the target site. The obtained distribution...

Optimal reaction time for surface-mediated diffusion.

Physical review letters

Bénichou O, Grebenkov D, Levitz P, Loverdo C, Voituriez R.
PMID: 21230885
Phys Rev Lett. 2010 Oct 08;105(15):150606. doi: 10.1103/PhysRevLett.105.150606. Epub 2010 Oct 08.

We present an exact calculation of the mean first-passage time to a small target on the surface of a 2D or 3D spherical domain, for a molecule performing surface-mediated diffusion. This minimal model of interfacial reactions, which explicitly takes...

HIV-1 Vpr-a still "enigmatic multitasker".

Frontiers in microbiology

Guenzel CA, Hérate C, Benichou S.
PMID: 24744753
Front Microbiol. 2014 Mar 31;5:127. doi: 10.3389/fmicb.2014.00127. eCollection 2014.

Like other HIV-1 auxiliary proteins, Vpr is conserved within all the human (HIV-1, HIV-2) and simian (SIV) immunodeficiency viruses. However, Vpr and homologous HIV-2, and SIV Vpx are the only viral auxiliary proteins specifically incorporated into virus particles through...

Active transport in dense diffusive single-file systems.

Physical review letters

Illien P, Bénichou O, Mejía-Monasterio C, Oshanin G, Voituriez R.
PMID: 23909364
Phys Rev Lett. 2013 Jul 19;111(3):038102. doi: 10.1103/PhysRevLett.111.038102. Epub 2013 Jul 16.

We study a minimal model of active transport in crowded single-file environments which generalizes the emblematic model of single-file diffusion to the case when the tracer particle (TP) performs either an autonomous directed motion or is biased by an...

Agreement between patients' self-report and physicians' prescriptions on nonsteroidal anti-inflammatory drugs and other drugs used in musculoskeletal disorders: the international Pharmacoepidemiologic General Research eXtension database.

Pharmacoepidemiology and drug safety

Grimaldi-Bensouda L, Rossignol M, Aubrun E, Benichou J, Abenhaim L.
PMID: 22315129
Pharmacoepidemiol Drug Saf. 2012 Jul;21(7):753-759. doi: 10.1002/pds.3194. Epub 2012 Feb 07.

PURPOSE: The use of prescription records for the assessment of exposure to nonsteroidal anti-inflammatory drugs (NSAIDs) does not capture over-the-counter drug use. This study compared patients' self-reported use to physician's prescriptions for NSAIDs and other drugs used to treat...

Showing 1 to 12 of 136 entries