Charge without charge, regular spherically symmetric solutions and the Einstein-Born-Infeld theory

The aim of this paper is to continue the research of JMP 46, 042501 (2005) of regular static spherically symmetric spacetimes in Einstein-Born-Infeld theories from the point of view of the spacetime geometry and the electromagnetic structure. The energy conditions, geodesic completeness and the main features of the horizons of this spacetime are explicitly shown. A new static spherically symmetric dyonic solution in Einstein-Born-Infeld theory with similar good properties as in the regular pure electric and magnetic cases of our previous work, is presented and analyzed. Also, the circumvention of a version of "no go" theorem claiming the non existence of regular electric black holes and other electromagnetic static spherically configurations with regular center is explained by dealing with a more general statement of the problem.Comment: Figures in Int J Theor Phys (Online First

Passively mode-locked, self-frequency doubled, diode-pumped Yb:YAl3(BO3)4 laser

We report a self-frequency doubled Yb:YAl3(BO3)4 laser mode-locked by an ion implanted SESAM. Smooth tuning from the sub-picosecond to picosecond pulsewidth regime was achieved by varying the crystal angle with a maximum average green power of 270 mW.3 page(s

Antenatal Bartter syndrome with sensorineural deafness: refinement of the locus on chromosome 1p31

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Mutations in the chloride channel gene CLCNKB as a cause of classic Bartter syndrome.

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Mutations in the gene encoding the inwardly-rectifying renal potassium channel, ROMK, cause the antenatal variant of Barrter syndrome, evidence for genetic heterogeneity

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