Results 11 to 20 of about 1,278 (116)
Packing, alignment and flow of shape-anisotropic grains in a 3D silo experiment
New Journal of Physics, 2016 Granular material flowing through bottlenecks, like the openings of silos, tend to clog and thus inhibit further flow. We study this phenomenon in a three-dimensional hopper for spherical and shape-anisotropic particles by means of x-ray tomography.
Tamás Börzsönyi +6 more
doaj +1 more source
Stabilized wave segments in an excitable medium with a phase wave at the wave back
New Journal of Physics, 2014 The propagation velocity and the shape of a stationary propagating wave segment are determined analytically for excitable media supporting excitation waves with trigger fronts and phase backs.
V S Zykov, E Bodenschatz
doaj +1 more source
Effect of Chemical Enhancers in Transdermal Permeation of Alfuzosin Hydrochloride
International Scholarly Research Notices, Volume 2012, Issue 1, 2012., 2012 The objective of the present study is to explore the efficient chemical penetration enhancer among the various enhancers available in overcoming the stratum corneum barrier in transdermal delivery of Alfuzosin hydrochloride (AH). The different enhancers were incorporated in 2% Carbopol gel which was selected as a control and evaluated by in vitro ...
D. Prasanthi +3 more
wiley +1 more source
Stationary propagation of a wave segment along an inhomogeneous excitable stripe
New Journal of Physics, 2014 We report a numerical and theoretical study of an excitation wave propagating along an inhomogeneous stripe of an excitable medium. The stripe inhomogeneity is due to a jump of the propagation velocity in the direction transverse to the wave motion ...
Xiang Gao +3 more
doaj +1 more source
Organic Chemistry International, Volume 2011, Issue 1, 2011., 2011 The geometric, electronic structure, effect of the substitution, and structure physical‐chemistry relationship for oxazoles derivatives have been studied by ab initio and DFT theory. In the present work, the calculated values, namely, net charges, bond lengths, dipole moments, electron affinities, heats of formation, and QSAR properties are reported ...
Salah Belaidi +2 more
wiley +1 more source
Nucleation of reaction-diffusion waves on curved surfaces
New Journal of Physics, 2014 We study reaction-diffusion waves on curved two-dimensional surfaces, and determine the influence of curvature upon the nucleation and propagation of spatially localized waves in an excitable medium modelled by the generic FitzHugh–Nagumo model.
Frederike Kneer +2 more
doaj +1 more source
Self-similar motion for modeling anomalous diffusion and nonextensive statistical distributions [PDF]
, 2010 We introduce a new universality class of one-dimensional iteration model giving rise to self-similar motion, in which the Feigenbaum constants are generalized as self-similar rates and can be predetermined.
Afsar O Tirnakli U +15 more
core +2 more sources
A Growth Model for Multicellular Tumor Spheroids [PDF]
, 2003 Most organisms grow according to simple laws, which in principle can be derived from energy conservation and scaling arguments, critically dependent on the relation between the metabolic rate B of energy flow and the organism mass m.
Condat, Carlos A. +5 more
core +2 more sources
Simulating Male Selfish Strategy in Reproduction Dispute
, 2002 We introduce into the Penna Model for biological ageing one of the possible male mechanisms used to maximize the ability of their sperm to compete with sperm from other males.
Medawar P. B. +3 more
core +2 more sources
Network properties of protein structures [PDF]
, 2004 Protein structures can be studied as complex networks of interacting amino acids. We study proteins of different structural classes from the network perspective.
Albert +17 more
core +2 more sources