Word: nitrogenous
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
Eugene G. Rochow, professor of Chemistry, will be the fourth lecturer. He will analyze "The Great Nitrogen Shortage...
...water, and breathing air at a pressure of about ten atmospheres, 134 p.s.i. above normal. Instead of being searing hot, as they had feared, it proved comfortably warming. But there was no time to enjoy it. Not a second could be lost, or they would begin to suffer nitrogen poisoning-Jacques Yves Cousteau's "rapture of the deep"-which makes men behave irrationally and often suicidally...
...Vega will use an Atlas D as its first stage. The second stage, powered by a General Electric X405 rocket engine, is intended to place a 2½-ton satellite in a 300-mile orbit. Later Vegas will have third stages fueled with a J.P.L.-developed mixture, hydrazine and nitrogen textroxide, and should be capable of putting a 500-lb. vehicle on Mars...
...cancer in 1939, when he joined Manhattan's Memorial Center for Cancer and Allied Diseases. The next year he became its director. Then, for the duration, Dr. Rhoads was preoccupied with wartime problems-blood procurement, gas casualties and atom-bomb casualties. There were no gas casualties, but nitrogen mustard and related poisons, unused in war, eased the symptoms and prolonged the lives of some cancer patients. "Dusty" Rhoads revived the idea, then out of medical fashion, that drugs might yet be found to treat and even cure cancer...
...transition came in World War. II with nitrogen mustard-synthesized for use as a poison gas. Cancer researchers began testing it. found that it killed cells in rough proportion to their rate of reproduction. Though it killed the cancer cells faster than the normal, it was still highly poisonous, could be given (by intravenous injection) only in small doses. And eventually the cancer cells became resistant to it. History has sadly repeated itself with scores of chemicals of this class (technically "alkylating agents") developed since. About 20 are credited with definite but limited usefulness...