Word: oxygenate
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...virus, found to contain carbon, hydrogen, nitrogen and oxygen like thousands of organic compounds, could now be contemplated as a huge protein molecule -a "macro-molecule." Was it alive or not alive? No known living thing is crystalline in form. It would be fantastic to imagine a crystalline pig. Yet the virus showed the ability to reproduce itself in great quantities when stimulated by contact with a plant. Thus the Princeton chemist had discovered an apparent bridge between living and nonliving matter. This was a discovery of Nobel Prize calibre...
...Dillon that not only the human lungs but the bowels breathe. Dr. Dillon, a U. S. emigre practicing in Moscow, explained: "Air which has found access into the stomach and then into the intestines can be sucked into the blood. Especially it is true about oxygen which can dissolve in any liquid of the digestive tract. There is no impediment of anatomic character to such absorption of oxygen through the walls of the digestive tract, for the digestive tract embryologically comes from the same source as the respiratory tract. Comparative physiology presents indisputable proofs of a respiratory function...
Overgrown Atoms. Headliner of the convention was a round-faced, gum-chewing professor of Columbia University, Harold Clayton Urey, who won a Nobel Prize in 1934 for his spectrographic identification of deuterium, the doubleweight hydrogen atom which in combination with oxygen makes heavy water...
...nitrogen. After two years of work he and his associates have produced 20 grams of heavy nitrogen in 2½% concentration, 400 grams of lower concentrations. To obtain it they used a 35-ft. vertical tube designed by Columbia's George B. Pegram for the separation of heavy oxygen. The tube contains 1,200 steel cones. A gaseous compound of ammonia, rich in nitrogen, passes up through the tube; some condenses, trickles down and with each fall from cone to cone the concentration of heavy nitrogen becomes richer...
...millions of atoms. Although they cannot be seen under the microscope, the giant, complex molecules of proteins are among the most important targets of current research in biological chemistry. Until recent years not much was known about them except that they were very big; that they contained carbon, hydrogen. oxygen, nitrogen and sometimes sulphur and phosphorus; that in such animal processes as digestion they were broken down by protein-wreckers called enzymes and that they were composed of polypeptide chains which might, presumably, be contorted in any number of patterns...