Word: nitrogenating
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...severe operation; it may last five. But before the first week is out, the process normally begins to reverse itself, presumably because the hormone switches have been flicked. The patient than gets hungry. He needs fat and carbohydrates from food to provide calories. He starts to take up nitrogen and rebuild muscle protein at the same prodigious rate as a one-year-old (suggesting that the growth hormone may have been switched on). The need for sodium goes down, while that for potassium goes up. Weeks or months later, the body replaces its store...
Chemist Libby's water clock will be based on the same principle as the carbon 14 calendar. Some ten miles high, in the stratosphere, cosmic rays stream in from outer space. With far more force than an atom-smasher, the cosmic rays collide with nitrogen atoms. The crash produces hydrogen, carbon 14 and a minute amount of radioactive tritium. The atoms of cosmic tritium join molecules of water vapor and fall to the earth in snow and rain...
...doctors have learned to spin the rats on a special centrifuge. When G is high enough (19 Gs or so), the distorted rat is doused with liquid nitrogen, which quickly freezes him. Then the doctors can open him up and find where his organs were when G was pulling at them...
...such split-second cooling, Luyet and his associates built a kind of miniature ducking stool. With it they suspend bits of animal tissue and plant leaves over a container of liquid nitrogen kept at -320° F. One brief duck, and the cooling process is complete. Muscle tissue from the hearts of chick embryos has been successfully frozen by the clucking stool and later brought to life...
Four stages in the chemical pattern of convalescence are listed in the report: a few days of acute illness, and intermediate stage, a period when the patient begins to feel normal, and the final phase of "fat gain" until the body's nitrogen is again in balance...