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D'Emilia E.,INAIL National Institute for Insurance against Accidents at Work | Ledda M.,CNR Institute of Neuroscience | Foletti A.,CNR Institute of Neuroscience | Lisi A.,CNR Institute of Neuroscience | And 3 more authors.
Electromagnetic Biology and Medicine | Year: 2016

Heretofore only observed in living systems, we report that weak-field ion cyclotron resonance (ICR) also occurs in inanimate matter. Weak magnetic field (50 nT) hydronium ICR at the field combination (7.84 Hz, 7.5 µT) markedly changes water structure, as evidenced by finding an altered index of refraction exactly at this combined field. This observation utilizes a novel technique which measures the scattering of a He–Ne laser beam as the sample is exposed to a ramped magnetic field frequency. In addition to the hydronium resonance, we find evidence of ICR coupling to a more massive structure, possibly a tetrahedral combination of three waters and a single hydronium ion. To check our observations, we extended this technique to D2O, successfully predicting the specific ICR charge-to-mass ratio for D3O+ that alters the index of refraction. © 2016 Taylor & Francis


Kisielewicz T.,Warsaw University of Technology | Piparo G.B.L.,University of Rome La Sapienza | Mazzetti C.,University of Rome La Sapienza | Fiamingo F.,INAIL National Institute for Insurance against Accidents at Work
Przeglad Elektrotechniczny | Year: 2016

The influence of an extended grounding system on the dimensioning of an SPD system for apparatus protection against lightning surges is investigated. In an extended earthing arrangement, an apparatus distant from the main switch board is usually protected by an SPD system consisting of a first SPD at the main switch board (SPD1) and of a downstream SPD close the apparatus (SPD2); if the SPD2 is earthed locally, additional stresses on such SPD are expected due to lack of equipotentiality of the extended earthing arrangement. In this paper the current and the associated charge expected at installation point of SPD2 have been investigated by several computer simulations performed by means of the transient software EMTP-RV. © 2016,Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved.

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