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61Canadian and American health care systems compared — basis ($2724 and $2121 on a non adjusted basis); total U.S. spending was US$6096 vs. US$3137 (PPP) ($6096 and $3038 on a non adjusted basis).] Studies have come to different conclusions about the result of this disparity in spending. A 2007… …
62Gilberto Silva — Infobox Football biography playername = Gilberto Silva fullname = Gilberto Aparecido da Silva nickname = Parede Invisível (The Invisible Wall) height = height|m=1.91 http://soccernet.espn.go.com/wc/player?id=20131 lang=en] dateofbirth = birth… …
63Attention-deficit hyperactivity disorder management — There are several effective and clinically proven options to treat people with attention deficit hyperactivity disorder (ADHD). The most effective and cost efficient way is with stimulant medication. The most common stimulant medications are… …
64astronomy — /euh stron euh mee/, n. the science that deals with the material universe beyond the earth s atmosphere. [1175 1225; ME astronomie ( < AF) < L astronomia < Gk. See ASTRO , NOMY] * * * I Science dealing with the origin, evolution, composition,… …
65Iran — /i ran , i rahn , uy ran /, n. a republic in SW Asia. 67,540,002; ab. 635,000 sq. mi. (1,644,650 sq. km). Cap.: Teheran. Formerly (until 1935), Persia. * * * Iran Introduction Iran Background: Known as Persia until 1935, Iran became an Islamic… …
66microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …
67geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… …
68space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
69High speed photography — [ Eadweard Muybridge, first published in 1887.] High Speed Photography is the science of taking pictures of very fast phenomena. In 1948, the Society of Motion Picture and Television Engineers (SMPTE) defined high speed photography as any set of… …
70international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …
