The mold must be strong enough to resist the pressure of the molten metal and sufficiently permeable to permit the escape of air and other gases from the mold cavity; otherwise, they would remain as holes in the casting.
It can be observed directly under fluoroscopy, by the acoustic, audible escape of air from the vascular sheath, and by a sudden decrease in saturation.
Bronchial tear causing tension pneumothorax is an extremely rare case which can occur due to massive escape of air from a large bronchial tear as seen in this case.
In both cases it is important to assure a perfect sealing of the cork: the closed end of the tube is subjected to high pressure variations and even a small escape of air can nullify the standing wave.
The reservoir in addition to storing the hydraulic fluid performs various other important functions such as dissipating heat through its walls, conditioning of the fluid by helping settle the contaminants, aiding in the escape of air, and providing mounting support for the pump and various other components.
The brakes are four in number – two handbrakes, acting by friction; and two acting by preventing the free escape of air from cylinder and thus using compressed air in retarding the progress of the engine.
LDW at the surface also prevented escape of air molecules trapped between the dry beads so that the beads floated.
This allows their shelf-like, down-turned free margins to function as a one-way valve to prevent the escape of air from the lower respiratory tract below.
The mechanism of development of spontaneous pneumomediastinum was originally described by Macklin and Macklin as increased intra-alveolar pressure causing the rupture of alveoli with the escape of air into the mediastinum.
We described a paralytic rabies patient who had dysphagia and pneumomediastinum (ie free air or gas contained within the thoracic cavity from the escape of air into the mediastinal tissues, usually from rupture of interstitial emphysema or pulmonary bleb and also can be found in association with severe asthma, vomiting, excessive coughing or shouting) as initial presentations.
Analyzing this quirky behavior, University of Chicago computer scientist Todd Dupont suggested that evaporation might happen more quickly at a drop's edge, where water molecules have a better chance of escaping into the air.
