Marco Masia

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BACKGROUND The widely accepted impression that substance abuse and dependence are associated with increased suicidal risk was evaluated by literature review and with new data. METHOD Previous research on this association was reviewed, and clinical data on suicide attempts and substance use in 504 mood disorder patients hospitalized in 4 psychiatric units(More)
The induced dipole moment of a water molecule close to a point charge (with the radius of Na + or Be 2+) is computed with the three main methods to implement molecular polarization (point dipoles, fluctuating charges and shell model). The results are compared with high level ab initio calculations and studied as a function of the charge-molecule distance(More)
The transition to spatial-temporal complexity exhibited by spiral waves under the effect of gravitational field in the Belousov-Zhabotinsky reaction is numerically studied on the basis of spiral tip dynamics. Successive transformations in tip trajectories are characterized as a function of the hydrodynamical parameter and attributed to a(More)
Acid dissociation and the subsequent solvation of the charged fragments at ultracold temperatures in nanoenvironments, as distinct from ambient bulk water, are relevant to atmospheric and interstellar chemistry but remain poorly understood. Here we report the experimental observation of a nanoscopic aqueous droplet of acid formed within a superfluid helium(More)
It is shown that, for a tightly bound ion-solvation shell complex, the mean square displacement for solvation molecules is characterized by a long lasting transitory. This initial portion is related to the rotational relaxation of the complex and can reach up to several hundred picoseconds for a representative example such as the Mg(2+) ion in water. As the(More)
The Authors evaluate the issue about the search of first employment and the depressive effects possibly linked to it. The research includes two groups of unemployed and two control groups of workers. Sex difference has been taken into account. After a preliminary semi-structured interview, all subjects have been evaluated by the means of psychological(More)
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