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Mostrando ítems 11-20 de 26
Artículo
Thermally driven escape over a barrier of arbitrary shape
(AIP Publishing, 1999)
The Kramers theory for the thermally activated rate of escape of a Brownian particle from a potential well is extended to a barrier of arbitrary shape. The extension is based on an approximate solution of the underlying ...
Artículo
A refinement of the concept of equilibrium in multiple objective continuous games
(Real Academia de Ciencias Exactas, Físicas y Naturales, 1999)
This paper considers a perfection refinement of the concept of equihbrium for multiple objective non-zero sum games. Based on the ideas of van Damme (1991) on perturbed games and stability the concept of perfect equilibrium ...
Artículo
Purely dynamical signature of the orientational glass transition
(American Physical Society, 1999-10-04)
The dynamics of the freezing transition of the rotator phase crystal of ethanol into its orientational glass phase is monitored by measurements of molecular rotational components in the quasielastic neutron scattering ...
Artículo
The presence of glutamate dehydrogenase is a selective advantage for the cyanobacterium Synechocystis sp. strain PCC 6803 under nonexponential growth conditions
(American Society for Microbiology, 1999)
he unicellular cyanobacterium Synechocystis sp. strain PCC 6803 has two putative pathways for ammonium assimilation: the glutamine synthetase- glutamate synthase cycle, which is the main one and is finely regulated by the ...
Artículo
On the breakup of slender liquid bridges: Experiments and a 1-D numerical analysis
(ScienceDirect, 1999-07)
Slender axisymmetric dielectric liquid bridges are made stable by the action of an axial electric field. In this paper, the subsequent dynamics of a slender liquid bridge after turning off the electric field is considered. ...
Artículo
Simple model with facilitated dynamics for granular compaction
(American Physical Society, 1999)
A simple lattice model is used to study compaction in granular media. As in real experiments, we consider a series of taps separated by large enough waiting times. The relaxation of the density exhibits the characteristic ...
Artículo
Shape and size of simple cations in aqueous solutions: A theoretical reexamination of the hydrated ion via computer simulations
(American Institute of Physics Publising LLC, 1999)
The simplest representation of monoatomic cations in aqueous solutions by means of a sphere with a radius chosen on the basis of a well-defined property (that of the bare ion or its hydrate) is reexamined considering ...
Artículo
The benthic Gammaridea (Crustacea, Amphipoda) fauna of Algeciras Bay (Strait of Gibraltar): distributional ecology and some biogeographical considerations
(BMC (parte de Springer Nature), 1999)
The Gammaridea fauna of Algeciras Bay, located on the Mediterranean side of the Strait of Gibraltar, was studied with regard to the species composition, distribution and ecology. Of the 116 species identified, 13 are ...
Artículo
Relativistic effects in electromagnetic nuclear responses in the quasi-elastic delta region
(Elsevier, 1999-09-20)
A new non-relativistic expansion in terms of the nucleon's momentum inside nuclear matter of the current for isobar electro-excitation from the nucleon is perfo rmed. Being exact with respect to the transferred energy and ...
Artículo
Riesz's theorem for orthogonal matrix polynomials
(Springer, 1999-01)
We describe the image through the Stieltjes transform of the set of solutions V of a matrix moment problem. We extend Riesz's theorem to the matrix setting, proving that those matrices of measures of V for which the matrix ...