When the animal exhales, nearly all of the air flows towards the front of the lung and out of the trachea in a net unidirectional flow. At the beginning of inhalation, air enters through the ...

Unidirectional air flow in birds long has been attributed to air sacs in the lungs. But Farmer disagrees, since gators don't have air sacs, and says it's due to aerodynamic "valves" within the lungs.

There had been some suggestion that alligators might breathe via unidirectional air flow, too, but no one had conclusively illustrated that this was the case.

The ability to position the agar surface related to the position of unidirectional air flow, avoiding laminar flow turbulence, make the TRIO.SETTLE an ideal cleanroom accessory.

Thermal diodes, much like their electrical counterparts, provide unidirectional heat transfer, allowing heat to flow in one direction while blocking it in the reverse.

When the animal exhales, nearly all of the air flows towards the front of the lung and out of the trachea in a net unidirectional flow. At the beginning of inhalation, air enters through the ...