The Lagrangian description of turbulence is characterized by a unique conceptual simplicity
and by an immediate connection with the physics of dispersion and mixing. In this article, we …

Metaphors, generalizations and unifications are natural and desirable ingredients of the
evolution of scientific theories and concepts. Physics, in particular, obviously walks along …

We consider nonequilibrium systems with complex dynamics in stationary states with large
fluctuations of intensive quantities (eg the temperature, chemical potential or energy …

A black hole casts a shadow as an optical appearance because of its strong gravitational
field. We study how to determine the spin parameter and the inclination angle by observing …

Ethanol electrooxidation was investigated at platinum based electrodes: Pt, Pt—Sn, Pt—Re
dispersed on a high surface area carbon powder. The atomic composition of the bimetallic …

We consider the possibility that astrophysical black holes (BHs) can violate the Kerr bound;
ie, they can have angular momentum greater than BH mass, J> M. We discuss implications …

We study spherical black hole solutions in Einstein-aether theory, a Lorentz-violating
gravitational theory consisting of general relativity with a dynamical unit timelike vector (the …

We report experimental results on the acceleration component probability distribution
function at Rλ= 690 to probabilities of less than 10− 7. This is an improvement of more than …

We introduce an original acoustic method to track the motion of tracer particles in high
Reynolds number turbulent flows. We present in detail the experimental technique and show …

We present the results of a uniform analysis of the soft X-ray spectra of 15 type I active
galactic nuclei (AGN) observed with the high-resolution X-ray gratings onboard Chandra …