[en] The synthesis of a bis-zwitterionic lamellar hybrid material containing ammonium carboxylate groups is described. Cation-exchange properties of this material towards transition metal and lanthanide ions were studied as well as the regeneration and reuse of the material. (authors)

[en] Radio Frequency Identification (RFID) technologies aim to identify any 'object', in the broadest sense of the term, fitted with an 'RFID tag', by means of data transmission via radio waves and without contact with an 'interrogator'. The use of radio frequencies for tag identification enables blind communication, at varying distances, and sometimes involving several hundred objects almost simultaneously. In 2009, the Afsset agency assessed the potential impact of these technologies on the environment and human health, particularly in terms of the electromagnetic fields emitted by these systems, and issued a series of recommendations