Abstract: An x-ray tube includes a source for releasing electrons and an anode head with a central axis. A target is formed on an end face of the anode head, on which target during operation the electrons impinge in an excited region. The anode head provides a flow path for a cooling fluid, which flow path leads from at least one inlet connection via a radially outer portion, further via a cooling gap, and further via a radially inner portion to at least one outlet connection. The excited region of the target is essentially annular, where in a region of the anode head opposite the excited region of the target, a local height of the cooling gap increases continuously from radially outside to radially inside. The x-ray tube can be operated at a higher power and/or with less wear.

Abstract: The invention relates to an installation for producing a medical preparation, in particular for producing a preparation for parenteral nutrition. Liquids are transferred by means of the installation from a plurality of source containers to a target container. The installation comprises a receptacle with drivers for a valve block, wherein the drivers of the valves are arranged offset from one another.

Abstract: The invention relates to an installation for producing a medical preparation, in particular for producing a preparation for parenteral nutrition. Liquids are transferred by means of the installation from a plurality of source containers to a target container. The installation comprises a receptacle with drivers for a valve block, wherein the drivers of the valves are arranged offset from one another.

Abstract: This invention relates to a method for controlling a bi-level apparatus. The method includes repeatedly measuring an airflow, choosing an expiration threshold value and choosing an inspiration threshold value. Switching to an inspiration mode takes place if the airflow is greater than the expiration threshold value in a comparison with the expiration threshold value. A switching back to the expiration mode takes place if the airflow is smaller than the inspiration threshold value in a comparison with the inspiration threshold value. Moreover, the invention relates to a bi-level apparatus for performing the method.

Abstract: This invention relates to a method for controlling a bi-level apparatus. The method includes repeatedly measuring an airflow, choosing an expiration threshold value and choosing an inspiration threshold value. Switching to an inspiration mode takes place if the airflow is greater than the expiration threshold value in a comparison with the expiration threshold value. A switching back to the expiration mode takes place if the airflow is smaller than the inspiration threshold value in a comparison with the inspiration threshold value. Moreover, the invention relates to a bi-level apparatus for performing the method.