Columbia Encyclopedia

(Encyclopedia) Skellefteälven shĕlĕfˈtəĕlvˌĕn [key], river, c.255 mi (410 km) long, rising in Norrbotten co., N Sweden, in the mountains along the Norwegian border. It flows SE through Uddjaur lake (30 mi/48...

(Encyclopedia) Vaygach or Vaigach both: vīgächˈ [key], island, 1,312 sq mi (3,398 sq km), Nenets Autonomous Area, off NE European Russia, in the Arctic Ocean, between the mainland and Novaya Zemlya. A continuatio...

(Encyclopedia) Rockhampton, city and region (2016 pop. 79,726), Queensland, E Australia, on the Fitzroy River. It is a rail center and, with its port at Port Alma, the principal trade center for the pastoral and min...

(Encyclopedia) Eisleben īsˈlābən [key], city, Saxony-Anhalt, E Germany, at the foot of the Harz Mts. It is ...

(Encyclopedia) Estremadura əshtrəmədo͞oˈrə [key], region, W Portugal, formerly a province, now divided between the provinces of Estremadura and Ribatejo, with a small part in Beira Litoral. Estremadura provinc...

(Encyclopedia) ore, metal-bearing mineral mass that can be profitably mined. Nearly all rock deposits contain some metallic minerals, but in many cases the concentration of metal is too low to justify mining the ore...

(Encyclopedia) Lota lōˈtä [key], city (1992 pop. 50,123), S central Chile, a port on the Gulf of Arauco, an inlet of the Pacific Ocean. Founded in the 17th cent., the city grew rapidly after coal was discovered i...

(Encyclopedia) Nordland nôrˈlän, no͝orˈ– [key], county (1995 pop. 241,420), 14,798 sq mi (38,327 sq km), N central Norway, bordering on the Norwegian Sea in the west and on Sweden in the east. The chief towns...

(Encyclopedia) ormolu ôrˈməlo͞o [key], finish used on metal to imitate gold. It is employed chiefly for furniture mountings. The term originally applied to a coating of ground gold and was extended to alloys of ...

(Encyclopedia) oxidases, in biochemistry, enzymes that catalyze reactions that directly involve molecular oxygen (see oxidation and reduction). Some utilize flavin coenzymes derived from riboflavin (see vitamin B2)....