Disclosed herein is a method for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising applying to the keratin fibers a dye composition comprising at least one compound chosen from styryl and imine compounds comprising a heterocycle that can undergo opening andor dyes corresponding to these compounds whose heterocycles are open. Specific embodiments provide for the use of one or more horseshoe magnets for use in the magnetic coupling mechanisms. The invention also relates to a method for producing one such nanoprobe. The statistics monitoring mechanism measures the arrival fluctuations of the supply of data packets. Controlling the second client to receive and store the video program sent on the first channel in synchronization with the first client. Furthermore, the intercooler, the supercharger and an intake manifold can be arranged such that when viewed in the lateral direction, the intercooler and supercharger overlap each other and when viewed in the longitudinal direction, the intercooler and intake manifold can also overlap each other.