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Showing 1 to 12 of 64 entries
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Photodissociation of HCl and small (HCl)m complexes in and on large Ar n clusters.

The Journal of chemical physics

Nahler NH, Farnik M, Buck U, Vach H, Gerber RB.
PMID: 15260671
J Chem Phys. 2004 Jul 15;121(3):1293-302. doi: 10.1063/1.1763570.

Photodissociation experiments were carried out at 193 nm for single HCl molecules which are adsorbed on the surface of large Ar n clusters and small (HCl)m complexes which are embedded in the interior of these clusters. For the surface...

Shear stress in nonideal fluid lattice Boltzmann simulations.

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

Gross M, Moradi N, Zikos G, Varnik F.
PMID: 21405797
Phys Rev E Stat Nonlin Soft Matter Phys. 2011 Jan;83(1):017701. doi: 10.1103/PhysRevE.83.017701. Epub 2011 Jan 24.

The viscous stress in nonideal fluid lattice Boltzmann methods is investigated theoretically and by simulations. Three representative liquid-gas models are compared in a steady-state situation, where an analytical expression for the viscous stress is available. It is shown that,...

Multiple reentrant glass transitions in confined hard-sphere glasses.

Nature communications

Mandal S, Lang S, Gross M, Oettel M, Raabe D, Franosch T, Varnik F.
PMID: 25033741
Nat Commun. 2014 Jul 18;5:4435. doi: 10.1038/ncomms5435.

Glass-forming liquids exhibit a rich phenomenology upon confinement. This is often related to the effects arising from wall-fluid interactions. Here we focus on the interesting limit where the separation of the confining walls becomes of the order of a...

Thermal fluctuations in the lattice Boltzmann method for nonideal fluids.

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

Gross M, Adhikari R, Cates ME, Varnik F.
PMID: 21230626
Phys Rev E Stat Nonlin Soft Matter Phys. 2010 Nov;82(5):056714. doi: 10.1103/PhysRevE.82.056714. Epub 2010 Nov 29.

We introduce thermal fluctuations in the lattice Boltzmann method for nonideal fluids. A fluctuation-dissipation theorem is derived within the Langevin framework and applied to a specific lattice Boltzmann model that approximates the linearized fluctuating Navier-Stokes equations for fluids based...

Simulation of static critical phenomena in nonideal fluids with the lattice Boltzmann method.

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

Gross M, Varnik F.
PMID: 23004903
Phys Rev E Stat Nonlin Soft Matter Phys. 2012 May;85(5):056707. doi: 10.1103/PhysRevE.85.056707. Epub 2012 May 24.

A fluctuating nonideal fluid at its critical point is simulated with the lattice Boltzmann method. It is demonstrated that the method, employing a Ginzburg-Landau free energy functional, correctly reproduces the static critical behavior associated with the Ising universality class....

Modelling thermal fluctuations in non-ideal fluids with the lattice Boltzmann method.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

Gross M, Adhikari R, Cates ME, Varnik F.
PMID: 21536574
Philos Trans A Math Phys Eng Sci. 2011 Jun 13;369(1944):2274-82. doi: 10.1098/rsta.2011.0091.

Recently, we proposed a theoretical framework to include thermal fluctuations into the Lattice Boltzmann (LB) method for non-ideal fluids. Here, we apply a variant thereof to a certain class of force-based non-ideal fluid LB models. We find that ideal-gas-like...

Single-particle fluctuations and directional correlations in driven hard-sphere glasses.

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

Mandal S, Chikkadi V, Nienhuis B, Raabe D, Schall P, Varnik F.
PMID: 24032797
Phys Rev E Stat Nonlin Soft Matter Phys. 2013 Aug;88(2):022129. doi: 10.1103/PhysRevE.88.022129. Epub 2013 Aug 19.

Via event-driven molecular dynamics simulations and experiments, we study the packing-fraction and shear-rate dependence of single-particle fluctuations and dynamic correlations in hard-sphere glasses under shear. At packing fractions above the glass transition, correlations increase as shear rate decreases: the...

Corrigendum to "Comparing the effects of nursing versus peer-based education methods on the preoperative anxiety in infertile women: An RCT" [Int J Reprod BioMed 2019; 17: 883-890].

International journal of reproductive biomedicine

Farnia F, Aflatoonian A, Kalantari A.
PMID: 34977460
Int J Reprod Biomed. 2021 Dec 13;19(11):1027. doi: 10.18502/ijrm.v19i11.9919. eCollection 2021 Nov.

[This corrects the article DOI: 10.18502/ijrm.v17i12.5795.].

Non-monotonic effect of additive particle size on the glass transition in polymers.

The Journal of chemical physics

M Zirdehi E, Varnik F.
PMID: 30646709
J Chem Phys. 2019 Jan 14;150(2):024903. doi: 10.1063/1.5063476.

Effect of small additive molecules on the structural relaxation of polymer melts is investigated via molecular dynamics simulations. At a constant external pressure and a fixed number concentration of added molecules, the variation of the particle diameter leads to...

The efficacy of amantadine hydrochloride in the treatment of COVID-19 - a single-center observation study.

Polski merkuriusz lekarski : organ Polskiego Towarzystwa Lekarskiego

Bodnar W, Aranda-Abreu G, Slabon-Willand M, Kotecka S, Farnik M, Bodnar J.
PMID: 34919079
Pol Merkur Lekarski. 2021 Dec 16;49(294):389-393.

Coronavirus disease 19 (COVID-19) rapidly spread worldwide. The search for effective measures to counter the development and effects of the pandemic includes: identifying the disease pathogen, introducing methods of reducing its transmission, building the population immunity, and the search...

Instrument development and evaluation for patient-related outcomes assessments.

Patient related outcome measures

Farnik M, Pierzchała WA.
PMID: 22915979
Patient Relat Outcome Meas. 2012 Jul;3:1-7. doi: 10.2147/PROM.S14405. Epub 2012 Mar 05.

Patient-related outcomes measures could provide important information for the current state of the art in medical care and even have an impact on macrodecisions in the health care system. Patient-related outcomes were initially defined as subjective health indicators that...

Crossover from tumbling to tank-treading-like motion in dense simulated suspensions of red blood cells.

Soft matter

Krüger T, Gross M, Raabe D, Varnik F.
PMID: 25353617
Soft Matter. 2013 Aug 28;9(37):9008-15. doi: 10.1039/c3sm51645h.

Via computer simulations, we provide evidence that the shear rate induced red blood cell tumbling-to-tank-treading transition also occurs at quite high volume fractions, where collective effects are important. The transition takes place as the ratio of effective suspension stress...

Showing 1 to 12 of 64 entries