874 resultados para 949


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The four sites drilled on the Irish continental margin (Goban Spur) yielded sediments ranging in age from Holocene to Barremian. Most of the sediments were deposited in well oxygenated waters, and the small amounts of organic matter they contain are highly oxidized. During a few time intervals from the Cenomanian to earliest Turonian, however, the oxygen content of the bottom waters reached very low levels, resulting in the deposition of homogeneous or laminated black sediments containing from 0.5 to 11% total organic carbon (TOC). The original organic matter was of mixed marine and terrestrial origin. The oxidizing-reducing cycles represented by interbedded black and light sediments are probably a result of changes in both circulation and productivity. The black sediments at Sites 550, 551, and 549 were probably deposited near the lower end, middle, and upper end, respectively, of an expanded oxygen-minimum layer. The oil and gas source potential of the laminated black sediments is very good to excellent. The organic-carbon-lean sediments deposited under oxidizing conditions have no oil or gas source potential. The thermal maturity of all sediments is low.

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National Highway Traffic Safety Administration, Washington, D.C.

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French and Greek on opposite pages.

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Mode of access: Internet.

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Ioannis Baptistate Van Helmont ... Opuscula medica inaudita ... Editio tertia multò emendatior, con port. propia comienza en p. [637]

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Political satire in dramatic form. Publication suppressed in Germany, and at the request of the German government, in France. cf. Spectator, v.53, p. 949, July 24, 1880.

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A private collection, made by Nathan Dunn and deposited in the Philadelphia museum, whence it was removed to London in 1842. cf. History of Philadelphia, by J.T. Scharf and T. Westcott, 1884, v. 2, p. 948-949.

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Smith II: 949; Shaw & Shoemaker (1823): 14959.

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1. Berlinisches stadtbuch.--2. Berlinische urkunden von 1261 bis 1550.--3. Berlinische regesten von 949 bis 1550.