3 résultats pour "murchison"
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Météorite de Murchison
deux formes ayant les mêmes propriétés cllimiques, mais différenciées par le sens (vers la gauche ou vers la droite) dans lequel elles dévient la lumière polarisée. Ainsi que l'avait découvert Pasteur, la plupart des molé cules optiquement actives des organismes vivants sont du type lévogyre : elles dévient la lumière polarisé!:~ vers la gauche. 4 De tous les acides aminés identifiés dans la météorite de Murchison, six se rencontrent dans les protéin...
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Benjamin Harrison (1833-1901).
homesteaders against pressure from the powerful railroads. He fought vigorously for Civil War veterans, supported high taxes on imports (called tariffs), payments todisabled and opposed the Chinese Exclusion Act, which stopped Chinese immigration to the U.S. for 10 years ( see Immigration: From 1840 to 1900 ). He also introduced 101 special pension and relief bills in six years. Harrison's name was well known by the Republican National Convention in 1884. In spite of this, Congressman and forme...
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Benjamin Harrison (1833-1901) - Histoire
homesteaders against pressure from the powerful railroads. He fought vigorously for Civil War veterans, supported high taxes on imports (called tariffs), payments todisabled and opposed the Chinese Exclusion Act, which stopped Chinese immigration to the U.S. for 10 years ( see Immigration: From 1840 to 1900 ). He also introduced 101 special pension and relief bills in six years. Harrison's name was well known by the Republican National Convention in 1884. In spite of this, Congressman and forme...