Abstract: A computer-based method for selecting an actionable item displayed in a graphical user interface on a mobile computer system is provided. The method includes detecting a first gesture, ending at a first position, on a lower portion of a touchscreen; in response to detecting the first gesture, activating a single-handed operation mode; determining a sequence of actionable items for a foreground application executing on a processor; detecting a second gesture on the touchscreen, the second gesture beginning at the first position and ending at a second position; in response to detecting the second gesture, highlighting one of the actionable items of the sequence based on the second position; detecting a third gesture on the touchscreen; and, in response to detecting a release at the second position as the third gesture, selecting the highlighted actionable item for processing by the foreground application and de-activating the single-handed operation mode.

Abstract: In a metering unit (10) having at least one outlet (20) for dispensing an aerosol with a defined concentration, with at least one inlet (180) for a carrier gas, at least one inlet for a liquid, preferably for a hydrogen peroxide solution, and a buffer container (30) for the liquid, it is provided that the metering unit (10) has at least one liquid flow controller (90) on the outflow side.

Abstract: A computer-based method for selecting an actionable item displayed in a graphical user interface on a mobile computer system is provided. The method includes detecting a first gesture, ending at a first position, on a lower portion of a touchscreen; in response to detecting the first gesture, activating a single-handed operation mode; determining a sequence of actionable items for a foreground application executing on a processor; detecting a second gesture on the touchscreen, the second gesture beginning at the first position and ending at a second position; in response to detecting the second gesture, highlighting one of the actionable items of the sequence based on the second position; detecting a third gesture on the touchscreen; and, in response to detecting a release at the second position as the third gesture, selecting the highlighted actionable item for processing by the foreground application and de-activating the single-handed operation mode.

Abstract: In a metering unit (10) having at least one outlet (20) for dispensing an aerosol with a defined concentration, with at least one inlet (180) for a carrier gas, at least one inlet for a liquid, preferably for a hydrogen peroxide solution, and a buffer container (30) for the liquid, it is provided that the metering unit (10) has at least one liquid flow controller (90) on the outflow side.