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aquaculture

(Encyclopedia)aquaculture, the raising and harvesting of fresh- and saltwater plants and animals. The most economically important form of aquaculture is fish farming, an industry that accounts for an ever increasin...

Mahfouz, Naguib

(Encyclopedia)Mahfouz, Naguib nəgēbˈ mäkhfo͞osˈ [key], 1911–2006, Egyptian novelist and short-story writer, b. Cairo. After his graduation (1934) from Cairo Univ., he worked in various government ministries...

Thames , river, England

(Encyclopedia)Thames tĕmz [key], Rom. Tamesis, principal river of England, c.210 mi (340 km) long. It rises in four headstreams (the Thames or Isis, Churn, Coln, and Leach) in the Cotswold Hills, E Gloucestershire...

ore

(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...

Mississippi, river, United States

(Encyclopedia)Mississippi, river, principal river of the United States, c.2,350 mi (3,780 km) long, exceeded in length only by the Missouri, the chief of its numerous tributaries. The combined Missouri-Mississippi ...

distillation

(Encyclopedia)distillation, process used to separate the substances composing a mixture. It involves a change of state, as of liquid to gas, and subsequent condensation. The process was probably first used in the p...

Euphrates

(Encyclopedia)Euphrates yo͞ofrāˈtēz [key], Turkish Frat, Arabic Al Furat, river of SW Asia, c.1,700 mi (2,740 km) long, formed by the confluence of the Kara and the Murad rivers, E central Turkey, and flowing g...

turbine

(Encyclopedia)CE5 Types of turbines turbine, rotary engine that uses a continuous stream of fluid (gas or liquid) to turn a shaft that can drive machinery. A water, or hydraulic, turbine is used to drive electr...

Woolf, Virginia

(Encyclopedia)Woolf, Virginia, 1882–1941, English novelist and essayist, b. Adeline Virgina Stephen; daughter of Sir Leslie Stephen. A successful innovator in the form of the novel, she is considered a significan...

Schröder, Gerhard

(Encyclopedia)Schröder, Gerhard shröˈdər [key], 1944–, chancellor of Germany (1998–2005), b. Mosenburg, Germany. A telegenic lawyer and Social Democrat, he entered politics as a Marxist student in the 1960...