Word: nitrogenous
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...Extreme pessimism regarding cancer of the lung is no longer justified, said the University of Tennessee's Dr. Duane Carr. Even in cases which are found too late for surgery to help, deep X-ray treatments and drugs (nitrogen mustard and triethylene melamine) will relieve pain and prolong life...
Working in their separate ways, 3,000 miles apart, the two researchers tackled some of the most complex and fundamental problems in the biological processes by which food is converted into energy. Krebs had already shown that urea, the end product of nitrogen metabolism, is formed through a cycle of chemical reactions in the liver. Soon he was delving into a still more important cycle, by which products of sugar and fatty acids are broken down into a group of chemicals including pyruvic acid. This acid is oxidized or "burned" to form a go-between chemical now known as acetyl...
...every twelve hours or so. A culture of algae is always at the height of its growing season. The whole plant is edible, and since it grows under water, it never suffers from wind, hail or frost. It can be fed with nutrients (chiefly carbon dioxide and combined nitrogen) by the simple method of dissolving them in water...
Organic chemistry, which has produced hundreds of thousands of compounds, is built on the fact that carbon atoms combine with one another to form rings and chains. Nitrogen atoms will do the same thing to a limited extent, but making nitrogen atoms link up with one another is extremely difficult on more than a laboratory scale. Hydrazine, which has two linked nitrogen atoms each attached to two hydrogen atoms, is the first of these linked "hydronitrogens" that has been produced outside the laboratory in appreciable quantities...
During World War II, the Germans made hydrazine for use as a rocket fuel. The chemical bond between the two nitrogen atoms contains a large amount of energy, and when it is broken during combustion, the energy is released, giving the rocket a powerful push. In the U.S., hydrazine (which is poisonous and blows up if improperly handled) will be used in rocket fuels, but in the long run it will be more important in chemical synthesis. Here the possibilities are almost endless. Each of hydrazine's four hydrogen atoms is highly reactive; each can be replaced, sometimes...