Word: acidity
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
...Ascorbic acid (formerly vitamin C), contained in tomatoes and citrus fruits, is a simple chemical made from glucose. In 1934 its price was $213 an ounce; in 1937 it became the first of the vitamins to be manufactured synthetically and its price dropped to $3.60 an ounce. Today it is made on a scale of about 100 tons a year at $1 an ounce. One ounce is enough for the daily need of about 500 adults...
...Niacin (formerly nicotinic acid) is the chief constituent of the B-complex and prevents pellagra. It is now the cheapest of the synthetics-$5 a pound...
...University of Wisconsin rabbit sperm was treated with sodium bicarbonate or lactic acid just before it was used for artificial insemination. Again there was no disturbance of the normal ratio of the sexes, but the lactic acid treatment greatly reduced fertility...
...Bureau of Animal Industry, U.S. DepartmenUof Agriculture, had taken up the study. Female rabbits and swine were treated with acid or alkali just before breeding. The Bureau's 2,383 young rabbits and 219 pigs were born with no significant change in the normal sex ratio. The Bureau therefore concluded that douche treatments and alteration of the acidity of the semen were without effect...
...theory holds that the resistance consists of increased production of PAB (para-aminobenzoic acid). But for a long time researchers were balked because there was no good test for the presence of PAB. Last year a good test was announced...