Word: airflow
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Dates: during 1990-1999
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...blocked. For reasons that are not entirely clear, the lungs are overstimulated by viral infections, allergens or pollutants. The body responds by activating various defense cells from the immune system. Their mobilization causes the airways to swell. At the same time, the muscles surrounding the airways contract, cutting off airflow. When that happens, asthmatics must inhale an adrenaline-like substance to stop the muscle spasm and reopen their airways...
...departure is the 90-ft. bipod mast. Stretching 20% taller than an ordinary mast on a yacht this size, it looks something like a seven-story wishbone straddling the boat. Made of lightweight carbon-fiber, it replaces the familiar -- and bulky -- pole-and-support system midships, for a better airflow onto the mainsail. The height of the newly designed structure allows the boat to carry 25% to 30% more sail for greater speed. Moreover, it is movable and hinged at the deck so that the entire assembly can be raised and lowered...