A self-cleaning nozzle that can be used for wet scrubbers comprises an electromagnetic coil that, when energized, causes an outlet orifice of the nozzle to enlarge so that pollutant particles clogging the nozzle fall down the orifice unclogging it. Alongside the current mode of recovery of the conversion products, based on the treatment of the effluent of the top zone of the reaction, a second mode is added, based on the direct extraction of liquid from the reaction zone, degassing such liquid at the same pressure as the reactor and subjecting it to vacuum extraction. Furthermore, metabolic syndrome can be treated by regulating the levels of MTP, FABP2, ANXA5, PDHA2, CDS1, and GK2. A code embedding unit embeds a predetermined code into the image data, by changing the feature index of the first color component based on the feature index of the second color component, using the information registered. To improve the steering comfort, the movement speed of the valve element is controlled.