Abstract: A device which ensure functionality of a vehicle fuel cell system, even at temperatures of below freezing point, includes at least one heating element arranged in the area of the condensate trap of the fuel cell in such a way that any ice present is heated locally. As a result, one or more melted channels form, through which water may flow after only a very short thawing process.

Abstract: The invention relates to a fuel cell system comprising a gas generating system in which a hydrogen-rich gas is generated and a fuel cell unit having an anode and a cathode, the anode having an inlet line for the hydrogen-rich gas and an exhaust line, and the cathode having an inlet line for an oxygen-rich gas and an exhaust line; a mass flow sensor for the hydrogen-rich gas is arranged in the inlet line of the anode and a thermal mass flow sensor is used as the mass flow sensor.

Abstract: Gasified particles for cosmetic treatments, particularly hair treatments, are described. The gasified particles contain at least one gas enclosed in a solid enveloping material. The enveloping material is selected so that the gas is released on contact of the enveloping material with water or moisture. The release of the gas can be accompanied by a detectable acoustic effect (pop effect). The hair treatment composition also can provide a hair fixing effect. Furthermore an instant gel preparation is described substantially comprising a mixture of dry substances, which contains at least one gel former and at least one solid substance producing a detectable acoustic effect on contact with moisture, especially gasified particles. The gasified particles are used as acoustic indicators for the readiness of the instant preparation after liquid addition.

Abstract: The use of flower wax, preferably from flowers of the jasmine, the mimosa, the narcissus, the bitter orange or the wild camomile in liquid hair treatment agents, as well as liquid hair treatment agents containing flower wax.