Word: nitrogenating
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...antibody molecule is a protein, made up of chains of amino acids, of which there are 20 varieties. In 31 years of detailed work, the Edelman team learned by chemical and physical analysis that this particular molecule contains 19,996 atoms (of hydrogen, carbon, nitrogen, oxygen and sulphur) grouped in 1,320 amino-acid units, which in turn are assembled with the aid of chemical bonds into two "light" chains of 214 amino acids apiece and two "heavy" chains of 446 each (see diagram). Schematically, the four chains, in which the acids are strung like beads, look like a letter...
...animal. And the un skilled farm labor needed for the simplified job would earn only about $2.50 per hour, sharply reducing costs to the wool industry. Taking up the project at Terrill's suggestion, Agriculture Biologist Ethel Dolnick and Physiologist Ivan Lindahl began feeding varying amounts of a nitrogen-mustard anti-tumor drug to experimental sheep...
...single outward-swinging hatch that can be opened in 10 sec. To snuff out any fire that might start, there is now an emergency venting system that can reduce cabin pressure in seconds. And while the spacecraft is on the pad, a mixture of 60% oxygen and 40% nitrogen has been substituted for the 100% oxygen of flight, further reducing the danger of fire...
Then, as results came in from experimental plantings two years ago, the miracle proved highly vulnerable to such mundane enemies as bacteria, blight and insects. It required expensive nitrogen fertilization and often broke during milling. Many Asians, who prefer their rice sticky and manageable in the bowl, found IR8 too starchy and dry. Indonesians, in particular, complained because the stubby IR8 stalks had to be cut with a larger blade than could be concealed in the hand. That, they felt, offended their rice goddess...
These organic compounds made of carbon, nitrogen, hydrogen and oxygen resemble ordinary liquids. Yet their orderly molecular structure is similar to that of solid crystals such as diamonds, mica and quartz. The crystals themselves are not new, but it was only recently that scientists discovered that an electrical charge makes them light-reflecting; the higher the voltage, the greater the reflecting power. At first, this "electro-optical effect" could be shown only in the laboratory, since the crystals reacted to electricity only at certain temperatures. Now, after trying more than 100 compounds, RCA scientists have produced a crystal that responds...