After 4 weeks, the groups switched apparatuses.
For example, Sweden banned the sale of switches, apparatuses and instruments containing mercury in 1993 (Ordinance SFS 1991:1290) and instructed the Swedish Chemicals Inspectorate (KemI) to look into a total ban on the handling of mercury in Sweden, including chemicals used for analysis.
This apparatus allowed switching of the patient from the respirator to the forced oscillatory setup during the recordings.
When the experimenter re-entered the room, she pulled back the apparatus, removed any rewards from the apparatus, switched the sides of the rope handles (so that the other chimpanzee could now pull) and began timing the next trial.
The contactor is used for making, switching and breaking of apparatuses and devices at voltage levels up to 1 kV.
How it all started, though, is little clearer than the day Mr Miller first switched on his apparatus.
Leonard explained: "Vowels are the most open of sounds, and when you come off a vowel and cease saying it you switch the vocal apparatus to pronounce the next sound".
Patients in the placebo ultrasound group will receive the same duration of ultrasound with the apparatus switched on (so that patients will see the lights flashing on the machine) but without any current output.
In this regulatory system, the product of gene flaK is the single class I gene product, like flrA in other Vibrio species or fleQ in Pseudomonas, and activates σ54-dependent transcription of class II genes, which encode components of the MS ring-switch-export apparatus and the two-component system FlaLM (Kim and McCarter 2004).
Addition of moisture to the airstream is difficult to control, since water remains in the apparatus at the moment of switching off humidification.
