23,867 research outputs found
Flowmeter and Ground Penetrating Radar: comparison between hydrogeological and geophysical methods
We discuss a comparison between saturated hydraulic conductivity calculated with Electromagnetic Borehole Flowmeter (EBF) and water content obtained by Ground Penetrating Radar (GPR) Zero Offset Profile (ZOP
Thermodynamics in the NC disc
We study the thermodynamics of a scalar field on a noncommutative disc implementing the boundary as the limit case of an interaction with an appropriately chosen confining background. We explicitly obtain expressions for thermodynamic potentials of gases of particles obeying different statistics. In order to do that, we derive an asymptotic expansion for the density of the zeros of Laguerre polynomials. As a result we prove that the Bose-Einstein condensation in the noncommutative disc does not take place.Fil: Franchino Viñas, Sebastián Alberto. Universitat Jena; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Pisani, P.. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; Argentin
The nuclear pseudospin symmetry along an isotopic chain
We investigate the isospin dependence of pseudospin symmetry in the chain of
tin isotopes (from Sn until Sn). Using a Woods-Saxon
parametrization of the nuclear potential for these isotopes we study in detail
the effect of the vector-isovector and Coulomb potentials in the energy
splittings of neutron and proton pseudospin partners in the isotopic chain. We
conclude that the realization of nuclear pseudospin symmetry does not change
considerably with the mass number, and is always favored for neutrons. We also
find that the potential accounts for essentially all the pseudospin
isospin asymmetry observed and that the Coulomb potential plays a negligible
role in this asymmetry. This can be explained by the dynamical nature of
pseudospin symmetry in nuclei, namely the dependence of the pseudospin
splittings on the shape of the nuclear mean-field potential.Comment: 4 pages, 4 figures, to be published in Brazilian Journal of Physic
Three-dimensional phlebography of the saphenous venous system
This is the first study reporting the technique for the 3D visualization of the saphenous veins obtained by CT in living subjects
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