Catalogo dei prodotti della ricerca

Migrants and Mental Health: Equal Rights but Different Needs

Coupled reaction–diffusion equations on adjacent domains

We consider a reaction–diffusion system for two unknowns defined in adjacent domains of ℝN. We treat two spatial configurations: a cylinder and its complement, and two half-spaces. Each one of these unknowns is governed by a specific reaction–diffusion equation of Fisher–KPP type. The two quantities interact by an exchange through the separating boundary. We study the long-time behavior of this system. We first derive or characterize the existence and uniqueness of a positive steady state and...

Correlation between myocardial work indices and main echocardiographic and cardiopulmonary exercise stress test parameters in olympic endurance athletes

Introduction: Myocardial works indices (MWI) are new echocardiographic parameters that innovatively assess left ventricular function. Although recent studies show correlation between these indices and traditional morpho-functional echocardiographic (TTE) and cardiopulmonary test (CPET) parameters in general population and in different pathologic conditions, data on athletes remains scarce. Aim of our study is to investigate a relationship between MWI and main TTE and CPET parameters in a larg...

Improved hot dark matter bound on the QCD axion

We obtain a reliable cosmological bound on the axion mass ma by (1) deriving the production rate directly from pion-pion scattering data, which overcomes the breakdown of chiral perturbation theory and results in & SIM;30% differences from previous estimates; (2) including momentum dependence in the Boltzmann equations for axion-pion scatterings, which enhances the relic abundance by & SIM;40%. Using present cosmological datasets we obtain ma < 0.24 eV, at 95% C.L. We also constrai...