Various methods of artificial respiration, most based on the application of external force to the lungs, were once used.
This may require help, but it cannot be done through the application of external pressure.
The reason is that all motion is subject to being accelerated or retarded (by the application of external forces).
Upon application of external sucrose the membrane capacitance decreased at all voltages tested.
Upon application of external sucrose, protons can pass the membrane turning presteady-state into transport currents.
Typically in such experiments, gene expressions are measured before and after the application of external perturbation.
The application of external PEEP in severe asthma remains a controversial topic.
The application of external fixation for pelvic fractures reduces bleeding and helps manage hemodynamically unstable patients.
In clinical practice, application of external fixators probably means less soft tissue damage.
In the ferrous metals industry there are also many applications of external recycling.
