Abstract: The use of an aqueous composition comprising a semiconductor as cleaning agent for surfaces in the outdoors field and indoors field is proposed.

Abstract: The use of an aqueous composition comprising a semiconductor as cleaning agent for surfaces in the outdoors field and indoors field is proposed.

Abstract: The use of an aqueous composition comprising a semiconductor as cleaning agent for surfaces in the outdoors field and indoors field is proposed.

Abstract: The use of an aqueous composition comprising a semiconductor as cleaning agent for surfaces in the outdoors field and indoors field is proposed.

Abstract: A method for the plasma-chemical reduction of gaseous and/or solid pollutants in exhaust gases of internal combustion engines by using dielectric-barrier discharges is proposed, the dielectric-barrier discharges being carried out in the combustion space (4) of the internal combustion engine.

Abstract: A water tapping fixture with an outlet opening which is connected to a supply connection through a pipe having at least one valve, wherein an ultraviolet light radiating device is arranged in the pipe connected to the water tapping fixture. The ultraviolet light radiating device is arranged closely adjacent the outlet opening of the fixture. The outlet opening may be arranged in a head which is movable relative to a base part and the ultraviolet light radiating device is arranged in the head. Such a head may be, for example, a shower head which is connected through a hose to a wall fixture. The head may be connected through a flexible line to the base part and a feed line for the ultraviolet light radiating device is attached to the flexible line.

Abstract: Process for the decontamination of decontaminants in waste waters, wherein the waste water stream to be treated pass sequentially through following process steps,waste water treatment with hydrogen peroxide (H.sub.2 O.sub.2), irradiating at the same time with UV light,treatment with a reducing agent such as sodium dithionite,precipitation of existing metal contaminants, optionally followed by a filtration and/or a treatment with a selective ion exchanger.

Abstract: The process for cleaning polluted solids by crushing the solids and removing the pollutants consists of mechanically fluidizing the crushed solids, through-blowing them with air and irradiating them with UV light, the air flow subsequently being subject to dust removal and irradiated with UV light again.