Word: methyl
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...patient) is relatively easy. The difficulty is to secure the ball to the femur. In early operations, the shaft holding the ball was screwed into the femur. Charnley was dissatisfied with the method because the shaft sometimes came loose. A dentist friend proposed that he "cement" it in with methyl methacrylate, a plastic used for years in dentistry. "My friend couldn't have suggested anything better," says Charnley. "It was a tremendous advance. The prosthesis [artificial part] now remains permanently, rigidly fixed to the bone...
Planting Fish. What could be done to clean up the mess? The mosquito abatement district switched from the persistent DDD to methyl parathion, a chemical that is effective against gnats but that deteriorates and becomes harmless in a short time. At the same time, the district hired a team of scientists from the University of California at Davis to find a way to control the gnats biologically. Led by Entomologist Sherburne F. Cook Jr., the team decided that a small fresh-water smelt, the Mississippi silverside, might find the gnats appetizing. In 1967 they "planted" 3,000 fingerlings...
After a month of contradictions the Food and Drug Administration last week announced the chemical nature of STP, the latest jet-speed psychedelic. Says FDA: it is technically called 4-methyl 2.5 dimethoxy alpha methyl phenethylamine, but is known simply as DOM to the Dow Chemical Co., its discoverers. It is related to mescaline and amphetamine. Dow insists that none of its samples have leaked into illegal drug channels; the formula for making it must have been stolen. But pharmacologists believe that several different mind-shaking concoctions are being distributed to hippies under the magic initials STP, now translated...
...report from a Boston ophthalmologist that he had tracked down 14 cases of blindness or near blindness among contact wearers and several hundred more of eye damage, all within three years. There was speculation that the damage might have come from impurities such as free acid in the methyl methacrylate plastic (akin to Plexiglas) used for the lenses...
These results raise several challenging fundamental concepts. Thus, the head-on adsorption is quite unexpected for a molecule containing a reactive triple bond, and it is perhaps surprising that only substitution by two inductive methyl groups can activate the acetylenic triple bond sufficiently for sideways adsorption. Finally, the great difference between SiO2 and Al2O2 raises important questions concerning the role of the oxide in the adsorption...