Abstract: A descaling device having a device housing, a shaft, a shaft bearing, a nozzle head and a medium coupling, wherein the shaft bearing is arranged in the device housing and the shaft is mounted in the device housing by the shaft bearing for carrying out a rotary movement, wherein the shaft and the nozzle head are detachably connected to one another in a non-destructive manner, wherein the medium coupling has a medium connection for supply of a medium, wherein the shaft has a shaft cavity for conducting the medium supplied at the medium connection to the nozzle head. The descaling device has an improved maintainability, and reliability due to the descaling device having a motor, and due to the motor being arranged on the shaft in the device housing between the nozzle head and the medium coupling in order to generate the rotary movement of the shaft.

Abstract: Aspects of the invention relate to a roof comprising at least an inclined surface and a rim marking a transition to another surface extending horizontally or at a different inclination, the inclined surface and the rim being covered by roof elements. The roof further comprising at least one anchor for attaching an anchor rope to. The anchor is secured to the roof beneath the roof element or elements covering the rim and the roof elements covering the rim are spaced apart from the roof elements covering the inclined surface so as to allow access to the anchor from outside the roof.

Abstract: An apparatus for metering out viscous compositions includes a metering chamber (12) for metering out the viscous composition, a driving mechanism (16), which drives a displacer disposed in the metering chamber, an inlet valve (32), which is connected upstream from the metering chamber (12) and an outlet valve (38), which is connected downstream from the metering chamber (12) and, after the metering chamber (12) is filled, is opened up for discharging the metered-out viscous composition from the metering chamber (12). A threaded rod (14) is disposed longitudinally displaceably as displacer in the metering chamber (12). The threaded rod (14) is rotationally guided coaxially in a hollow shaft (18) of an electric motor (16) and engaged by way of threads with the hollow shaft (18).

Abstract: A method of enhancing the antiviral activity of IFN-.alpha. and especially human IFN-.alpha. is disclosed which comprises administration of Dipyridamole or a pharmaceutically acceptable salt thereof to a subject receiving IFN-.alpha.. Also disclosed are pharmaceutical compositions comprises of IFN-.alpha. and dipyridamole or a pharmaceutically acceptable salt thereof.