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Paleoceanography of the Gulf of California : a 350 - year diatom recordMatherne, Anne Marie 18 December 1981 (has links)
Graduation date: 1982
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Effects of physical phenomena on the distribution of nutrients and phytoplankton productivity in a coastal lagoonMillan-Nunez, Roberto 24 November 1980 (has links)
Graduation date: 1981
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Zooplankton variability in the California current, 1951-1982Roesler, Collin Stevens 09 September 1987 (has links)
Graduation date: 1988
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384 |
The evolution of a physiological system: the pulmonary surfactant system in diving mammals.Miller, Natalie J January 2005 (has links)
Pulmonary surfactant is a complex mixture of lipids and proteins that lowers surface tension, increases lung compliance, and prevents the adhesion of respiratory surfaces and pulmonary oedema. Pressure can have an enormous impact on respiratory function, by mechanically compressing tissues, increasing gas tension resulting in increased gas absorption and by increasing dissolved gas tensions during diving, resulting in the formation of bubbles in the blood and tissues. The lungs of diving mammals have a huge range of morphological adaptations to enable them to endure the extremely high pressures associated with deep diving. Here, I hypothesise that surfactant will also be modified, to complement the morphological changes and enable more efficient lung function during diving. Molecular adaptations to diving were examined in surfactant protein C (SP-C) using phylogenetic analyses. The composition and function of pulmonary surfactant from several species of diving mammals was examined using biochemical assays, mass spectrometry and captive bubble surfactometry. The development of surfactant in one species of diving mammal (California sea lion), and the control of surfactant secretion using chemical and mechanical stimuli were also determined. Diving mammals showed modifications to SP-C, which are likely to lead to stronger binding to the monolayer, thereby increasing its fluidity. Phospholipid molecular species concentrations were altered to increase the concentration of more fluid species. There was also an increase in the percentage of alkyl molecular species, which may increase the stability of the monolayer during compression and facilitate rapid respreading. Levels of SP-B were much lower in the diving species, and cholesterol was inversely proportional to the maximum dive depth of the three species. Surface activity of surfactant from diving mammals was very poor compared to surfactant from terrestrial mammals. The newborn California sea lion surfactant was similar to terrestrial mammal surfactant, suggesting that these animals develop the diving-type of surfactant after they first enter the water. The isolated cells of California sea lions also showed a similar response to neuro-hormonal stimulation as terrestrial mammals, but were insensitive to pressure. These findings showed diving mammal surfactant to have a primarily anti-adhesive function that develops after the first entry into the water, with a surfactant monolayer, which would be better suited to repeated collapse and respreading. / Thesis (Ph.D.)--School of Earth and Environmental Sciences, 2005.
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Mechanisms of RNA : nucleocapsid interactions in Jamestown Canyon virus : a dissertation /Ogg, Monica M. January 2007 (has links)
Dissertation (Ph.D.).--University of Texas Graduate School of Biomedical Sciences at San Antonio, 2007. / Vita. Includes bibliographical references.
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Increasing mobility in cities by controlling overcrowding /Geroliminis, Nikolaos. Unknown Date (has links) (PDF)
Thesis (Ph. D. in Civil and Environmental Engineering)--University of California, Berkeley, 2007. / "Fall 2007." Includes bibliographical references (p. 101-103). Also available online.
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Caught in the web of scapegoating national coverage of California's Proposition 187 /Williams, Christopher Newell, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2008. / Vita. Includes bibliographical references.
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388 |
The McCleers and the Birneys Irish immigrant families into Michigan and the California gold fields, 1820-1893 /Stack, Robert Edward, January 1900 (has links)
Thesis (Ph. D.)--St. Louis University. / Includes bibliographical references (leaves 657-710).
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Bracketing lasya an ethnographic study of Mohiniyattam dance /Lemos, Justine Alexia, January 2009 (has links)
Thesis (Ph. D.)--University of California, Riverside, 2009. / Includes abstract. Accompanying CD-ROM includes Mohiniyattam practicing and performance. Includes bibliographical references (leaves 418-464). Issued in print and online. Available via ProQuest Digital Dissertations.
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390 |
Demythologizing Mexico counternarratives in Twentieth century American literature and film /Beckham, Jack Marlin, January 2009 (has links)
Thesis (Ph. D.)--University of California, Riverside, 2009. / Includes abstract. Includes bibliographical references (leaves 156-162). Issued in print and online. Available via ProQuest Digital Dissertations.
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