A predictive assessment of the uranium ore tailings impact on surface water contamination: Case study of the city of Kamianske, Ukraine.

In this study, we present an assessment of the uranium ore tailings impact on groundwater and surface water contamination. The radioactive materials were deposited in the tailings storage facility "Dniprovske" (the city of Kamianske, Ukraine) from 1954 to 1968; now it contains about 5.85·10 m of hazardous waste on the area of about 76 ha in the floodplain of the Dnipro river.

Dynamics in a multicomponent plasma near the low-frequency cutoff.

The distinctive feature of a multicomponent plasma is found to be a first order rotation of the light ion fluid with a characteristic frequency, Omega(r). A resonance at omega=Omega(r) results in plasma oscillation with unique properties. Coupling of the fast rotation time scale with the slow magnetosonic time scale leads to a nonlinear Schro dinger equation for the system and suggests the possibility of strong structural turbulence at MHD scales.