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On the cooling law of a non-dilute granular gas
H. Dominguez R. Zenit

Abstract: The cooling law of a granular gas was investigated using a three-dimensional MD simulation code, which allowed us to include both inelasticity and frictional effects of the particle contacts. It was found that the kinetic energy decays in time as E(t) - t-n;

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Numerical simulation for the flow structures following a three-dimensional horizontal forward-facing step channel

Abstract: A numerical code based on the finite volume discretization technique is developed to simulate flow structures following a three-dimensional horizontal forward-facing step. The link between the pressure distribution and velocity field are made by using the SIM

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Experimental modeling of algorithms and components for all-optical high-bit-rate digital processors-multipliers using light bullets
A.S. Shcherbakov A. Aguirre Lopez

Abstract: We present both the estimations of main parameters and the experimental data related to the modeling of algorithms and components for all-optical digital processors-multipliers, exploiting the spatio-temporal optical solitons or light bullets as bit carriers.

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Compuestos de matriz metálica rica en Zn, con alto contenido de Al y componentes estructurales de compuestos intermetálicos de Cu - Zn y Cu - Al particulados

Resumen: El objetivo principal de este trabajo es establecer si es factible elaborar, a partir de polvos, materiales que tengan la composición de la aleación eutectoide Zn - 22 %p Al, con diferentes contenidos de Cu y cuyas características estructurales permitan defin

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Spinodal decomposition ranges of Inx Ga1-x Ny P1-y and GaAsx Ny P1-x-y alloys
S. F. Díaz Albarrán V. A. Elyukhin

Abstract: We have described spinodal decomposition ranges of GaP-rich GaAsxNyP1¡x¡y and InxGa1¡xNyP1¡y alloy lattices matched to the GaP (001) substrate up to temperatures of 600±C. Transformation of bonds, strain and coherency strain energies at the phase separation a

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Characterization of the ACORDE scintillator counters using a PCI electronic card

Abstract: We present an automatic system for performing the characterization of plastic scintillator counters to be used by ACORDE (ALICE Cosmic Ray detector). This detector consists of a 120 scintillator counter array placed on the three top faces of the ALICE magnet.

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Effective Hamiltonian of an ultracold Bose gas confined in a four-well optical lattice

Abstract: In this paper we study an interacting Bose gas at low temperatures, confined in a one-dimensional potential composed of four wells. In order to derive and validate the effective Hamiltonian that describes this system, we study the stationary states of a parti

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Diffraction of beams by Ronchi rulings: comparison between two methods for gaussian spot size measurements

Abstract: Two independent methods for Gaussian spot size measurement are experimentally compared. The two methods use a Ronchi ruling where the transmitted total power and the normally diffracted energy are considered. We show that the beam widths obtained by these met

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Reciprocity relations for Bollmann's o-lattice

Abstract: A reciprocity relation for Bollmann's O-lattice is introduced. This result completes the existing Grimmer's reciprocity results between coincidence sites and displacement shift complete lattices. We show that the lattice generated by a¤i ¡ b¤i (i = 1; 2; 3) i

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Linearizing response of adaptive interferometer based on dynamic grating in erbium-doped fiber with saturable absorption

Abstract: Because of the unshifted type of recorded amplitude gratings, adaptive interferometers based on dynamic population gratings in Er-doped fibers with saturable absorption demonstrate an essentially quadratic response and, as a result, are not sensitive enough t

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