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Examination of the relationship of river water to occurrences of bottom water with reduced oxygen concentrations in the northern Gulf of MexicoBelabbassi, Leila 25 April 2007 (has links)
Six years of comprehensive data sets collected over the northern continental shelf
and upper slope of the Gulf of Mexico during the LATEX-A and NEGOM-COH
programs showed that low-oxygen waters (<2.4 mL÷L-1) are found only in spring and
summer and only in water depths between 10 and 60 m. Four regions in the northern
Gulf show considerable differences in the occurrence of low-oxygen waters. Lowoxygen
waters are observed almost exclusively in regions subject to large riverine
influences: the Louisiana and Mississippi-Alabama shelves. Hypoxic waters (oxygen
concentrations <1.4 mL÷L-1) are found only over the Louisiana shelf. No low-oxygen
water is found over the Florida shelf which has minimum riverine influence. Lowoxygen
water is found at only one station on the Texas shelf; this is during spring when
the volume of low-salinity water is at maximum. The distributions of low-salinity water
influenced the different distributions of low-oxygen and hypoxic waters in the four
regions. Low-oxygen occurrences are clearly related to vertical stratification. Lowoxygen
occurred only in stable water columns with maximum Brunt-Väisälä frequency
(Nmax) greater than 40 cycles÷h-1. When Nmax exceeded 100 cycles÷h-1 in summer over the
Louisiana shelf, oxygen concentrations dropped below 1.4 mL÷L-1, and the bottom
waters became hypoxic. Salinity is more important than temperature in controlling
vertical stratification. Locations where temperature influence was larger were found in
summer in water depth greater than 20 m over the Louisiana shelf, along the near shore
areas of the Mississippi-Alabama shelf west of 87úW, and in the inner shelf waters of the
Texas shelf. The extent of oxygen removal at the bottom of these stable water columns is
reflected in the amount of remineralized silicate. Silicate concentrations are highest
closest to the Mississippi River Delta and decrease east and west of the Delta. EOF analyses show that more than 65% of the oxygen variance is explained by the first mode.
The amplitude functions of the first EOF modes of bottom oxygen, water column Brunt-
Väisälä maxima, and bottom silicate are well correlated, indicating that much of the
variance in bottom oxygen is explained by water column stratification and bottom
remineralization.
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The physical limnology and dissolved oxygen regimes of small eutrophic lakesRuiz, Zoë January 1999 (has links)
No description available.
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Stable boundary layer flow over hills and valleysHolden, John Joseph January 1998 (has links)
No description available.
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Willow Pond Village family, marriage, and social stratification in a Yangzi Delta farming community /Murphy, Eugene Thomas. January 1994 (has links) (PDF)
Thesis (Ph.D.)--Columbia University, 1994. / Sponsor: Myron L. Cohen. Includes bibliographical references.
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The Claremont Foodshed: A Historical AnalysisComet, Allie 01 January 2009 (has links)
On the southeast corner of the Pomona College campus a small community farm and lush oasis is nestled in the suburban jungle of Claremont, California. ‘The Farm’ is a two-acre food forest that produces a wide variety of annual vegetable crops, fruits, and perennial herbs and berries in a landscape otherwise covered largely in asphalt and lawn.From my experiences on the Farm and in the classroom studying environmental analysis , I have developed a great interest in sustainable food and farming. The failures of the modern food system, destructive to the natural environment and inadequate in providing the world’s population with sufficient food or nutrition, posed against a great variety of emerging alternatives, has led me to study and engage in local, grassroots efforts to create new (and remember old) ways of feeding ourselves. In this project, I focus on the development of the Claremont area and the role that food and agriculture have played in its history. Additionally, I discuss the current situation and the local food system alternatives that are emerging.
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Standardised measures in stroke rehabilitation and their application to stroke researchKalra, Lalit January 1994 (has links)
No description available.
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Évolution de la polarisation au Canada : 1973-2003 /Goyette, Marc-André. January 2007 (has links) (PDF)
Thèse (M.A.)--Université Laval, 2007. / Bibliogr.: f. [62]-63. Publié aussi en version électronique dans la Collection Mémoires et thèses électroniques.
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Sociological theory and social stratification outline of a nonfunctionalist theory of stratifiction /Buckley, Walter Frederick, January 1900 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1958. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Structural change and inequality skill premia, firm selection and political consequences /Morrow, John Miles. January 2010 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 2010. / Digitized and made available by the University of Wisconsin Digital Collections Center as part of Minds@UW. WU Includes bibliographical references (p. 86-94).
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Theories of social stratification in recent American sociologyHinkle, Roscoe C. January 1952 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1952. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves [372]-387).
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