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Vanadzor

(Encyclopedia)Vanadzor, city (1989 pop. 75,616), in N Armenia, at the junction of the Pambak, Tandzut, and Vanadzoriget rivers. A rail center and a major chemical producer, it also manufactures textiles and foodstu...

Tlalnepantla de Baz

(Encyclopedia)Tlalnepantla de Baz tlälnāpänˈtlä ᵺā bäs [key], city (1990 pop. 702,270), Mexico state, S central Mexico, on the Tlalnepantla River. It is a communications and industrial center that owes its...

Thionville

(Encyclopedia)Thionville tyôNvēlˈ [key], Ger. Diedenhofen, town (1990 pop. 40,835), Moselle dept., NE France, in Lorraine. It is a center for metallurgical and chemical industries. The town was a favorite of Cha...

sodium benzoate

(Encyclopedia)sodium benzoate or benzoate of soda, chemical compound, C6H5CO2Na, colorless or white crystalline, aromatic compound; the sodium salt of benzoic acid. It is soluble in water and is used as a preservat...

sintering

(Encyclopedia)sintering, process of forming objects from a metal powder by heating the powder at a temperature below its melting point. In the production of small metal objects it is often not practical to cast the...

Sarnia

(Encyclopedia)Sarnia, city (1991 pop. 74,376), S Ont., Canada, on the St. Clair River, at the south end of Lake Huron and opposite Port Huron, Mich. The two cities are connected by a railroad tunnel, and there is a...

Rheinhausen

(Encyclopedia)Rheinhausen rīnˈhouˌzən [key], former town, North Rhine–Westphalia, NW Germany, a port on the Rhine River; chartered 1934. Manufactures include metal products, machinery, textiles, mining and ch...

Orsk

(Encyclopedia)Orsk ôrsk [key], city (1989 pop. 271,000), Orenburg region, in the foothills of the S Ural Mts., central Russia, on the Ural River. It is the center of the Orsk-Khalilovo industrial area, which has r...

stellar structure

(Encyclopedia)stellar structure, physical properties of a star and the processes taking place within it. Except for that of the sun, astronomers must draw their conclusions regarding stellar structure on the basis ...

Dzerzhinsk

(Encyclopedia)Dzerzhinsk dzĭrzhēnskˈ [key], city (1989 pop. 285,000), W European Russia, a port on the Oka River above. There is a huge chemical complex there. The city was called Chernorech until about 1919 and...