Fabrizio Baroni

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Preliminary data of a biogeochemical survey concerning antimony transfer from soil to plants in an abandoned Sb-mining area are presented. Achillea ageratum, Plantago lanceolata and Silene vulgaris can strongly accumulate antimony when its extractable fraction in the soil is high (139-793 mg/kg). A. ageratum accumulates in basal leaves (1367 mg/kg) and(More)
We study the two-spin entanglement distribution along the infinite S = 1/2 chain described by the XY model in a transverse field; closed analytical expressions are derived for the one-tangle and the concurrences Cr, r being the distance between the two possibly entangled spins, for values of the Hamiltonian parameters close to those corresponding to(More)
Sudden closure of a control valve or stopping of a pump, either planned or accidental, produces excess pressure in a fluid-filled pipeline known as water hammer. Water hammer, or hydraulic transient, refers to pressure fluctuations caused by a sudden increase or decrease in flow velocity. Pressure waves in the fluid interact with axial, bending, shear a(More)
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