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Sarcelles

(Encyclopedia)Sarcelles särsĕlˈ [key], city (1990 pop. 57,121), Val-d'Oise dept., N central France. Mostly residential, it has some light industry. A church dating partly from the 12th cent. and partly from the ...

Orekhovo-Zuyevo

(Encyclopedia)Orekhovo-Zuyevo əryĕˈkhəvə-zo͞oˈyĭvə [key], city (1989 pop. 137,000), W central European Russia, on the Klyazma River. There is a large textile industry (dating from the 18th cent.) and a maj...

radiochemistry

(Encyclopedia)radiochemistry, chemistry of radioactive substances (see radioactivity). Radioactive isotopes are very useful as tracers to study the mechanisms of complex organic reactions, since even minute amounts...

Herisau

(Encyclopedia)Herisau hāˈrĭzou [key], town, capital of Appenzell Ausser-Rhoden half canton, NE Switzerla...

Châtellerault

(Encyclopedia)Châtellerault shätĕlrōˈ [key], town, Vienne dept., W central France. It is an industrial center ...

Westerly

(Encyclopedia)Westerly, town (1990 pop. 21,605), Washington co., extreme SW R.I., between the Pawcatuck River and Block Island Sound; inc. 1669. Formerly important industries include textile manufacturing (dating f...

Kamen, Martin David

(Encyclopedia)Kamen, Martin David kāˈmən [key], 1913–2002, American biochemist, b. Toronto, Canada, grad. Univ. of Chicago (B.S., Ph.D. 1937). He discovered carbon-14, the radioactive isotope of carbon used to...

Montes Claros

(Encyclopedia)Montes Claros môNˈtəsh kläˈro͝osh [key], city (1996 pop. 271,324), Minas Gerais state, E central Brazil. Cattle breeding is the chief economic activity, and agriculture is important. Montes Clar...

Huancayo

(Encyclopedia)Huancayo wänkīˈō [key], city, alt. 10,731 ft (3,721 m), capital of Huancayn prov. and Jun...

Saint-Dizier

(Encyclopedia)Saint-Dizier săN-dēzyāˈ [key], town (1990 pop. 35,558), Haute-Marne dept., NE France, on the Marne River. It is a trading and transportation center; its manufactures include machinery, musical ins...