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valve

(Encyclopedia)valve, device for controlling the flow of fluids (liquids and gases). Valves vary in construction and size depending upon their function. Some are classified according to their method of operation or ...

Williams, C. K.

(Encyclopedia)Williams, C. K. (Charles Kenneth Williams), 1936–2015, American poet, b. Newark, N.J., grad. Univ. of Pennsylvania, 1959. He wrote more than 20 books of poetry, rich in detail, with complex syntax a...

Yalow, Rosalyn Sussman

(Encyclopedia)Yalow, Rosalyn Sussman, 1921–2011, American medical physicist, b. New York City, Ph.D. Univ. of Illinois, 1945. As a researcher at the Bronx Veterans Administration Hospital (from 1947), Yalow and c...

Swammerdam, Jan

(Encyclopedia)Swammerdam, Jan yän väˈmərdäm [key], 1637–80, Dutch naturalist. He was a pioneer in the use of the microscope. Before he turned to religious contemplation his chief interest was the study of in...

swim bladder

(Encyclopedia)swim bladder, large, thin-walled sac in some fishes that may function in several ways, e.g., as a buoyant float, a sound producer and receptor, and a respiratory organ. The swim bladder, or air bladde...

Blumberg, Baruch Samuel

(Encyclopedia)Blumberg, Baruch Samuel, 1925–2011, American biochemist and medical anthropologist, b. Brooklyn, N.Y., B.S. Union College, Schenectady, N.Y., 1946, M.D. Columbia, 1951, Ph.D. Oxford, 1957. From 1957...

salmonellosis

(Encyclopedia)salmonellosis sălˌmənĕlōˈsĭs [key], any of a group of infectious diseases caused by intestinal bacteria of the genus Salmonella, including typhoid fever, paratyphoid fever, blood poisoning, and...

Red Cross

(Encyclopedia)Red Cross, international organization concerned with the alleviation of human suffering and the promotion of public health; the world-recognized symbols of mercy and absolute neutrality are the Red Cr...

immunity

(Encyclopedia)immunity, ability of an organism to resist disease by identifying and destroying foreign substances or organisms. Although all animals have some immune capabilities, little is known about nonmammalian...

kwashiorkor

(Encyclopedia)kwashiorkor kwăshˌēôrˈkôr [key], protein deficiency disorder of children. It is prevalent in overpopulated parts of the world where the diet consists mainly of starchy vegetables, particularly i...