6 research outputs found
Strong interconversion of non-polar phonons and Josephson plasma oscillations induced by equilibrium Josephson currents in high T_c superconductors
We analyze consequences of dynamical modulations of Josephson current by
non-polar lattice mode in the Josephson junction barrier. In the high
junctions, the effect of such modulations can be anomalously strong due to the
proximity of the insulating barrier to the superconducting state. Accordingly,
the interconversion of sound (as well as other non-polar phonons) and the
Josephson plasma oscillations mediated by stationary Josephson currents, which
may be present in the junction due to various reasons, becomes possible. We
suggest that this effect can be employed for imaging of the stationary
Josephson currents. Estimates of the effect are given.Comment: 11 RevTeX pages, no figure
Spectroscopic studies and biological evaluation of some transition metal complexes of a novel Schiff base ligands derived from 5-arylazo-salicyladehyde and o
An objective classification of rainfall events on the basis of their convective features: application to rainfall intensity in the northeast of spain
Vasculopatia livedoide: uma doença cutânea intrigante Livedoid vasculopathy: an intringuing cutaneous disease
A vasculopatia livedoide é uma afecção cutânea oclusiva dos vasos sanguÃneos da derme, de caráter pauci-inflamatório ou não-inflamatório. Caracteriza-se pela presença de lesões maculosas ou papulosas, eritêmato-purpúricas, nas pernas, especialmente nos tornozelos e pés, as quais produzem ulcerações intensamente dolorosas, que originam cicatrizes atróficas esbranquiçadas, denominadas "atrofia branca". Nesta revisão, abordamos os estudos e relatos de caso da literatura médica referentes à s associações etiopatogênicas da doença, particularmente as que se referem aos estados de trombofilia, seus achados histopatológicos e abordagens terapêuticas empregadas na difÃcil condução clÃnica destes casos.<br>Livedoid vasculopathy is a skin disease that occludes the blood vessels of the dermis. It has a pauciinflammatory or non-inflammatory nature. It is characterized by the presence of macular or papular, erythematous-purpuric lesions affecting the legs, especially the ankles and feet, and producing intensely painful ulcerations, which cause white atrophic scars called "atrophie blanche". This review includes studies and case reports found in the medical literature regarding the etiopathogenic associations of the disease, particularly those related to thrombophilia, their histopathological findings and the therapeutic approaches used in the difficult clinical management of these cases