Word: magnesium
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
...comers. Car and engine are designed for twisting Grand Prix courses. The Climax engine delivers only 240 h.p. v. 290 h.p. for the Ferrari, can produce less speed on long, straight stretches. But the Climax delivers relatively higher power at medium speeds; in addition, the Cooper uses magnesium castings for many components, making it far lighter than the Ferrari (1,100 Ibs. v. 1,500 Ibs.). As one driver explains, "you can drive the thing out of a corner instead of having to change down," and Coopers can zip away from the Ferraris coming out of the turns. With...
...satellite, a magnesium sphere with a surface of silicon monoxide to keep it at proper temperature in sun or shadow, was put into a spin of about 50 r.p.m. The spin made it act like a gyroscope, keeping its axis always pointing in the same direction in space. At its perigee, the axis is parallel to the earth's surface. But a quarter of a revolution later the axis points vertically at the earth (see diagram). At apogee, the axis is parallel again...
...weather cleared early last week, the rescue crews took off and headed for the floating island. There the men, lugging: what gear they could, tramped through the blackness, stumbling through piles of ice, skirting cracks and ridges. At the runway, they lit gasoline-and paper-filled cans and magnesium flares and waited in the breathless cold as the C-123J cautiously turned for the airstrip. Says George Cvijonovich, scientific leader of the group: "It was really a mixture of astonishment and aesthetics, because the landing was aesthetic at the same time that it was astonishing. The plane was like...
Using an isolated dog's heart, connected to the donor dog's circulatory system, Bromberger and Caldini found that magnesium ions, released from the rest of the body during hypothermia, seemed to concentrate in the cold heart. They were then able to show that this magnesium could trigger fibrillation; a small magne sium increase caused fibrillation even at normal temperature...
...counter the magnesium, they finally tried tetraethylammonium chloride (TEA) on the strength of a report in a Swedish journal that TEA would remove magnesium-caused neuromuscular blocks in other parts of the body. Coupled with an electric shock, TEA promptly defibrillated 44 isolated dog hearts up to eight times each. The technique then saved the baby boy. In four other fibrillating human patients since treated in the same way, it has worked equally well. TEA may be the trick that wall allow considerably longer, cooler, safer heart operations than have been possible...