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Late Pliocene Ge/Si Record of Marine Biogenic Opal from the Southern AtlanticChen, Cheau-Ju 18 July 2000 (has links)
Abstract
The primary objective for this study is to determine the variations of germanium (Ge) to silicon (Si) ratios in diatom shells from down core sediments off the southwestern coast of the Africa. Because Ge behaves like Si in the ocean and the major source of these two elements is rivers, Ge/Si ratios of the diatom are thus expected to record the intensity of weathering on continents. Two sediment cores (Site 1081 and 1084) were collected during the ODP Leg 175 in August, October 1997 and were analyzed for intervals between 3.1 and 1.9 Ma. Generally, the (Ge/Si)diatom ratios in this study show the similar trend with those reported from the Antarctic Ocean. The decline of Ge/Si ratios after 2.5 Ma is caused by the high opal mass accumulation rate, indicating the increasing rivers input of silica to the ocean. Relatively high Ge/Si ratios of diatom shells during warm periods shown by the depleted benthic foraminiferal £_18O values from the North and Equatorial Atlantic, suggesting a scenario of intensified chemical weathering on continent. Cold periods signified by £_18O-enriched values are associated with lower Ge/Si ratios. Very likely the reduced Ge/Si values reflect the prevailing weathering on continents was less chemical-dissolving due to the dry weather in cold stages.
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Temporal and spatial variability in density, relative condition, gender composition and maturity status of Atlantic salmon (Salmo salar L.) parr in the Harry's River drainage system, insular Newfoundland /Fitzgerald, Jennifer, January 1999 (has links)
Thesis (M.Sc.)--Memorial University of Newfoundland, 2000. / Bibliography: 92-95.
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Defense planning and NATO-European Union relations /Kelemen, Tas. January 2002 (has links) (PDF)
Thesis (M.A.)--Naval Postgraduate School, 2002. / Thesis advisor(s): David S. Yost, Tjarck Roessler. Includes bibliographical references. Also available online.
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Island i NATO--partierna och försvarsfråganElfar Loftsson. January 1981 (has links)
Thesis (doctoral)--Göteborgs universitet, 1981. / Extra t.p. with thesis statement inserted. Abstract and summary in English. Includes bibliographical references (p. [317]-327).
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Poland and the European Union's security and defense Policy /Falecki, Tomasz. January 2004 (has links) (PDF)
Thesis (M.A. in National Security Affairs)--Naval Postgraduate School, June 2004. / Thesis advisor(s): David S. Yost. Includes bibliographical references (p. 47-49). Also available online.
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NATO and the War on Terrorism : objectives and obstacles /Bailey, Nathaniel A. January 2004 (has links) (PDF)
Thesis (M.A. in Nathinal Security Affairs)--Naval Postgraduate School, March 2004. / Thesis advisor(s): David S. Yost, Hans Eberhard-Peters. Includes bibliographical references (p. 47-50). Also available online.
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Migratory urge and gill Na⁺-K⁺-ATPase activity of hatchery reared Atlantic salmon smolts from Dennys and Penobscot River stocks, Maine and review of enhancement programs /Spencer, Randall C. January 2009 (has links)
Thesis (M.S.) in Zoology--University of Maine, 2009. / Includes vita. Includes bibliographical references (leaves 60-73).
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NATO's Weapons of Mass Destruction Initiative : achievements and challenges /Bravo, Iliana P. January 2003 (has links) (PDF)
Thesis (M.A. in National Security Affairs)--Naval Postgraduate School, September 2003. / Thesis advisor(s): David S. Yost, James Wirtz. Includes bibliographical references. Also available online.
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NATO's Mediterranean dialogue : challenges and prospects /Cayan, Umit N. January 2003 (has links) (PDF)
Thesis (M.A. in National Security Affairs)--Naval Postgraduate School, December 2003. / Thesis advisor(s): David S. Yost, Donald Abenheim. Includes bibliographical references. Also available online.
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Scaling eelgrass complexity in Newman Sound, Newfoundland and applications to fish ecology /Wells, Nadine J., January 2002 (has links)
Thesis (M.Sc.)--Memorial University of Newfoundland, 2002. / Includes bibliographical references.
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