PTENZA ITALY-INTERNATIONAL CONGRESS PROCLAMATIONS radars use pulsed radiofrequency that causes characteristic biological effects which are more invasive than non pulsed EMF;  radiofrequency can cause structural changes in enzymes with time reactions of nanoseconds, while the pulsed radiofrequencies emitted by radars occur every milliseconds, thus suggesting that for every pulsing event several enzymatic changes occur;  the pulsed signals can induce significant modifications on DNA regulations as an effect of the methylation of the genome;  scientific literature concludes that biological/health effects can occur at low intensity exposure and chronic exposure can make a living organism more susceptible to the effect of the EMFs;  ICEMS monograph (Eur. J. Oncol., 2010) concludes that there are non thermal mechanisms of action of EMF (including RF) on the living matter;