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Abd ar-Rahman I, emir of Córdoba

(Encyclopedia)Abd ar-Rahman I, d. 788, first Umayyad emir of Córdoba (756–88). The only survivor of the Abbasid massacre (750) of his family in Damascus, he fled from Syria and eventually went to Spain. There he...

inbreeding

(Encyclopedia)inbreeding, mating of closely related organisms. Inbreeding is chiefly used as a means of insuring the preservation of specific desired traits among the offspring of purebred animals (see breeding). C...

Havelange, João

(Encyclopedia)Havelange, João (Jean-Marie Faustin Godefroid de Havelange), 1916–2016, Brazilian business and sports executive, b. Rio de Janeiro. An Olympic swimmer (1936) and water polo player (1952), he was a ...

Pinnacles National Park

(Encyclopedia)Pinnacles National Park, c.26,000 acres (10,500 hectares), in the Gabilan Mts. of the Coast Ranges, W central Calif.; est. as a national monument 1980, designated a national park 2013. Pinnacles featu...

Pearson, Karl

(Encyclopedia)Pearson, Karl, 1857–1936, English scientist. He studied law, taught geometry, and applied mathematics and mechanics, and in 1911 became professor of eugenics at the Univ. of London and director of t...

Krebs, Edwin Gerhard

(Encyclopedia)Krebs, Edwin Gerhard, 1918–2009, American biochemist, b. Lansing, Iowa. He and fellow Univ. of Washington professor Edmond Fischer discovered a biological regulatory mechanism, reversible protein ph...

West Virginia University

(Encyclopedia)West Virginia University, mainly at Morgantown; coeducational; land-grant and state supported; est. and opened 1867 as an agricultural college, renamed 1868. It operates 15 schools and colleges, inclu...

Southern California, University of

(Encyclopedia)Southern California, University of, at Los Angeles; coeducational; chartered and opened 1880. The university has a liberal arts college and a graduate school as well as schools of architecture, urban ...

biofeedback

(Encyclopedia)biofeedback, method for learning to increase one's ability to control biological responses, such as blood pressure, muscle tension, and heart rate. Sophisticated instruments are often used to measure ...

denaturation

(Encyclopedia)denaturation, term used to describe the loss of native, higher-order structure of protein molecules in solution. Most globular proteins exhibit complicated three-dimensional folding described as secon...