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Frank, Joachim

(Encyclopedia)Frank, Joachim, 1940–, German-American physicist and biochemist, b. Siegen, Germany, Ph.D., Technical Univ. of Munich 1970. He became a U.S. citizen in 1997. Following several postdoctoral appointme...

humus

(Encyclopedia)humus hyo͞oˈməs [key], organic matter that has decayed to a relatively stable, amorphous state. It is an important biological constituent of fertile soil. Humus is formed by the decomposing action ...

International style, in architecture

(Encyclopedia)International style, in architecture, the phase of the modern movement that emerged in Europe and the United States during the 1920s. The term was first used by Philip Johnson in connection with a 193...

Dubochet, Jacques

(Encyclopedia)Dubochet, Jacques, 1942–, Swiss biophysicist and molecular biologist, Ph.D., Univ. of Geneva 1973. Dubochet was a researcher at the European Molecular Biology Laboratory in Heidelberg from 1978 to 1...

Council for Mutual Economic Assistance

(Encyclopedia)Council for Mutual Economic Assistance (COMECON or MEA), international organization active between 1956 and 1991 for the coordination of economic policy among certain nations then under Communist domi...

conscience

(Encyclopedia)conscience, sense of moral awareness or of right and wrong. The concept has been variously explained by moralists and philosophers. In the history of ethics, the conscience has been looked upon as the...

alanine

(Encyclopedia)CE5 alanine ălˈənēnˌ [key], organic compound, one of the 20 amino acids commonly found in animal proteins. Only the l-stereoisomer participates in the biosynthesis of proteins (see stereochemi...

chitin

(Encyclopedia)chitin kītˈən [key], main constituent of the shells of arthropods. Chitin, a polysaccharide (see carbohydrate) analogous in chemical structure to cellulose, consists of units of a glucose derivativ...

chernozem

(Encyclopedia)chernozem chĕrˈnəzĕmˌ [key] or black earth, variety of soil rich in organic matter in the form of humus. It is generally a modified type of loess. True chernozem is black in color, but there are ...

chalcedony

(Encyclopedia)chalcedony kălsĕdˈənē [key] [from Chalcedon], form of quartz the crystals of which are so minute that its crystalline structure cannot be seen except with the aid of a microscope. Chalcedony has ...