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mercaptan

(Encyclopedia)mercaptan thīˈōl [key], any of a class of organic compounds containing the group –SH bonded to a carbon atom. The volatile low-molecular-weight mercaptans have disagreeable odors. Mercaptans are ...

pathology

(Encyclopedia)pathology, study of the cause of disease and the modifications in cellular function and changes in cellular structure produced in any cell, organ, or part of the body by disease. The changes in tissue...

Shirakawa, Hideki

(Encyclopedia)Shirakawa, Hideki, 1936–, Japanese chemist, Ph.D. Tokyo Institute of Technology, 1966. Shirakawa was a research assistant at the Tokyo Institute of Technology from 1966 to 1979. He then taught at th...

Carothers, Wallace Hume

(Encyclopedia)Carothers, Wallace Hume kərŭᵺˈərz [key], 1896–1937, American chemist, b. Burlington, Iowa. He received his doctorate at the Univ. of Illinois in 1924, then taught organic chemistry there and a...

Conrad, Michael Georg

(Encyclopedia)Conrad, Michael Georg mĭkhˈäĕl gāˈôrk kônˈrät [key], 1846–1927, German critic and novelist. With Karl Bleibtreu, he founded (1885) the journal Gesellschaft as a rallying point for German w...

Columella

(Encyclopedia)Columella (Lucius Junius Moderatus Columella) kŏlˌyəmĕlˈə [key], fl. 1st cent. a.d., Latin writer on agriculture, b. Gades (now Cádiz), Spain. Of his work there remains the 12-volume De re rust...

graveyard school

(Encyclopedia)graveyard school, 18th-century school of English poets who wrote primarily about human mortality. Often set in a graveyard, their poems mused on the vicissitudes of life, the solitude of death and the...

Olney, Jesse

(Encyclopedia)Olney, Jesse ŏlˈnē, ōlˈnē [key], 1798–1872, American geographer and teacher. His Practical System of Modern Geography (1828), a standard work for decades, revolutionized the teaching of geogra...

Onions, C. T.

(Encyclopedia)Onions, C. T. (Charles Talbut Onions), 1873–1965, English philologist, lexicographer, author, and editor. After a post with British Naval Intelligence in World War I, he held a fellowship at Magdale...

Kraszewski, Józef Ignacy

(Encyclopedia)Kraszewski, Józef Ignacy yo͞oˈzĕf ēgnäˈtsē kräshĕfˈskē [key], 1812–87, Polish writer. He was imprisoned for political activities in Lithuania and in Germany. Wandering in exile through E...