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Saline lake ichnology : composition and distribution of cenozoic traces in the saline, alkaline lakes of the Kenya Rift Valley and Eocene Green River Formation, U.S.A.Scott, Jennifer Jane 20 December 2010 (has links)
A detailed study was made of the composition and distribution of modern and fossil animal and plant traces around saline, alkaline lakes in tectonically active, closed lake-basins. Modern and Pleistocene traces that were examined in lake basins of the Kenya Rift Valley (Lakes Bogoria, Magadi, and Nasikie Engida) were compared directly with fossil traces from the Eocene Lake Gosiute in the Green River Formation of Wyoming, U.S.A., which had a similar hydrochemistry. Analysis of lithofacies and the stratigraphic packaging of the sediments hosting biogenic structures was undertaken so that their vertical and lateral distribution could be used to interpret lake histories and to help to develop depositional models of enigmatic sedimentary successions. A focus was given to the application of the results for paleoecology and stratigraphy, and a model for predicting the position of different trace associations in vertical successions and in different parts of saline, alkaline lake basins has been developed. Evidence from the Kenyan lakes and Eocene Lake Gosiute shows that (1) sedimentary environments are diverse in underfilled basins, and frequent lake-level fluctuations strongly impact the distribution of sedimentary environments suitable for the production and preservation of biogenic structures; (2) the distribution of biogenic structures in underfilled basins is related to the geomorphological and structural setting, tectonic activity, catchment lithology, the basin margin or basin centre location, climate, and salinity and alkalinity, together with other finer-scale environmental and biological controls; (3) because saline environments are restrictive, sites of relatively dilute inflow (springs, rivers and deltas, ephemeral streams) provide oasis-like habitats for animals and plants, and contribute to the increased diversity and laterally variable distribution of saline-lake trace assemblages; and (4) the vertical distribution of trace fossils in a stratigraphic succession reflects changing environments through time; important stratigraphic surfaces, usually formed during periods of lake-level fall, can be recognized from the overprinting patterns of traces produced under different conditions.
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FAILURE AND REGENERATION IN THE NEW ENGLAND OF SARAH ORNE JEWETT AND MARY E. WILKINS FREEMANAnderson, Donald Robert, 1944- January 1974 (has links)
No description available.
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Estrutura termohalina e massas d\'água na vizinhança da Península Antártica a partir de dados in situ coletados por Elefantes-Marinhos do Sul (Mirounga leonina) / Termohaline structure and water masses in the vicinity of Antartic Peninsula from in situ data collected by southern Elephant Seals (Mirounga leonina)Santini, Marcelo Freitas 19 December 2011 (has links)
Neste trabalho é apresentado um estudo sobre a estrutura vertical e massas d\'água presentes na região oeste e norte da Península Antártica. Foram utilizados dados de temperatura, salinidade e pressão (profundidade) coletados por plataformas de coleta de dados (PCDs) fixadas em elefantes-marinhos do sul (EMS) pelo Projeto MEOP-BR, coordenado pela Profª Dra Mônica M. C. Muelbert, no período de fevereiro a novembro de 2008. Estes dados são transmitidos via sistema de satélites ARGOS a uma taxa de 2.91+/-0.25 vezes ao dia, distância média entre cada perfil coletado é de 14.43 +/- 12.28 km resultando em uma resolução espacial de 41.61 km/dia. Estes dados permitiram uma descrição detalhada da estrutura vertical e identificação de massas d\'água durante diferentes meses do ano de 2008. São comparados perfis verticais em diferentes estações do ano em regiões de plataformas de gelo marinho, do Estreito de Bransfield (EB) e norte da Península Antártica (PA), comparados transectos da porção oeste da PA coletados durante o verão e inverno de 2008 e são apresentados transectos através do Mar da Escócia (ME) nos meses de Setembro a Outubro de 2008. Os valores de temperatura potencial coletados estiveram na faixa entre -1.89ºC e 2.32ºC, os valores mínimos estão relacionados a áreas de formação de gelo marinho e os máximos a investidas através da Corrente Circumpolar Antártica (CCA) em mar aberto e em direção as Ilhas Georgia (IGS). Os valores de salinidade possuem variações entre 32.36 e 35.03 psu, estes valores resultam de diferentes processos, sendo os extremos relacionados a regiões de derretimento e formação de gelo marinho, respectivamente. Graças à grande área utilizada pelos EMS para forrageio durante o x período analisado, diversas massas d\'água são identificadas através de diagramas -S, são elas: Água Profunda Circumpolar (CDW), Água de Inverno (WW), Água de Plataforma de Baixa Salinidade (LSSW), Água Superficial Antártica (AASW), Água de Plataforma de Alta Salinidade (HSSW), Água Profunda Circumpolar Superior e Inferior (UCDW e LCDW), Água de Plataforma (SW), Água de Plataforma de Gelo (ISW), Água Profunda Cálida (WDW) e Água Profunda Cálida Modificada (MWDW). / To study the termohaline structure and water masses in the north and west sides of Antarctic Peninsula, 10 southern elephant seals (EMS) were equipped with highaccuracy conductivity-temperature-depth satellite-relayed data loggers (CTDSRDLs) by the MEOP-BR Project in beginning of 2008 at Elephant Island. Here, we show that measurements collected by these long-ranging, deep-diving predators allow oceanic vertical structure and water masses of the Southern Ocean to be mapped in regions and at times of year not sampled by other oceanographic instruments. These data are transmitted by the ARGOS satellite system at a rate of 2.91+/-0.25 times per day, mean distance between each profile collected is 14.43+/- 12.28 km, resulting in a spatial resolution of 41.61km/day. Vertical profiles are compared at different seasons in sea ice platforms regions, Bransfield Strait (EB) and northern tip of Antarctic Peninsula (PA). Are compared transects at the western side of the PA collected during summer and winter of 2008 and are presented transects across the Scotia Sea (ME) in the months of September and October of 2008. The collected potential temperature values were in the range from -1.89º C to 2.32ºC, the minimum values are related to areas of sea ice formation and the maximum amounts to dives through the Antarctic Circumpolar Current (ACC) in the open sea and towards the South Georgia Islands. The salinity values have variations between 32.36 and 35.03 psu, these values result from different processes, being related to melting and formation of sea ice. The large region sampled allowed us to identify during the study period several water masses from -S diagrams, they are: Circumpolar Deep Water (CDW), Winter Water (WW), Low Salinity Shelf Water xii (LSSW), Antarctic Surface Water (AASW), High Salinity Shelf Water (HSSW), Upper and Bottom Circumpolar Deep Water (UCDW and LCDW), Shelf Water (SW), Ice Shelf Water (ISW), Warm Deep Water (WDW) and Modified Warm Deep Water (MWDW).
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Estrutura termohalina e massas d\'água na vizinhança da Península Antártica a partir de dados in situ coletados por Elefantes-Marinhos do Sul (Mirounga leonina) / Termohaline structure and water masses in the vicinity of Antartic Peninsula from in situ data collected by southern Elephant Seals (Mirounga leonina)Marcelo Freitas Santini 19 December 2011 (has links)
Neste trabalho é apresentado um estudo sobre a estrutura vertical e massas d\'água presentes na região oeste e norte da Península Antártica. Foram utilizados dados de temperatura, salinidade e pressão (profundidade) coletados por plataformas de coleta de dados (PCDs) fixadas em elefantes-marinhos do sul (EMS) pelo Projeto MEOP-BR, coordenado pela Profª Dra Mônica M. C. Muelbert, no período de fevereiro a novembro de 2008. Estes dados são transmitidos via sistema de satélites ARGOS a uma taxa de 2.91+/-0.25 vezes ao dia, distância média entre cada perfil coletado é de 14.43 +/- 12.28 km resultando em uma resolução espacial de 41.61 km/dia. Estes dados permitiram uma descrição detalhada da estrutura vertical e identificação de massas d\'água durante diferentes meses do ano de 2008. São comparados perfis verticais em diferentes estações do ano em regiões de plataformas de gelo marinho, do Estreito de Bransfield (EB) e norte da Península Antártica (PA), comparados transectos da porção oeste da PA coletados durante o verão e inverno de 2008 e são apresentados transectos através do Mar da Escócia (ME) nos meses de Setembro a Outubro de 2008. Os valores de temperatura potencial coletados estiveram na faixa entre -1.89ºC e 2.32ºC, os valores mínimos estão relacionados a áreas de formação de gelo marinho e os máximos a investidas através da Corrente Circumpolar Antártica (CCA) em mar aberto e em direção as Ilhas Georgia (IGS). Os valores de salinidade possuem variações entre 32.36 e 35.03 psu, estes valores resultam de diferentes processos, sendo os extremos relacionados a regiões de derretimento e formação de gelo marinho, respectivamente. Graças à grande área utilizada pelos EMS para forrageio durante o x período analisado, diversas massas d\'água são identificadas através de diagramas -S, são elas: Água Profunda Circumpolar (CDW), Água de Inverno (WW), Água de Plataforma de Baixa Salinidade (LSSW), Água Superficial Antártica (AASW), Água de Plataforma de Alta Salinidade (HSSW), Água Profunda Circumpolar Superior e Inferior (UCDW e LCDW), Água de Plataforma (SW), Água de Plataforma de Gelo (ISW), Água Profunda Cálida (WDW) e Água Profunda Cálida Modificada (MWDW). / To study the termohaline structure and water masses in the north and west sides of Antarctic Peninsula, 10 southern elephant seals (EMS) were equipped with highaccuracy conductivity-temperature-depth satellite-relayed data loggers (CTDSRDLs) by the MEOP-BR Project in beginning of 2008 at Elephant Island. Here, we show that measurements collected by these long-ranging, deep-diving predators allow oceanic vertical structure and water masses of the Southern Ocean to be mapped in regions and at times of year not sampled by other oceanographic instruments. These data are transmitted by the ARGOS satellite system at a rate of 2.91+/-0.25 times per day, mean distance between each profile collected is 14.43+/- 12.28 km, resulting in a spatial resolution of 41.61km/day. Vertical profiles are compared at different seasons in sea ice platforms regions, Bransfield Strait (EB) and northern tip of Antarctic Peninsula (PA). Are compared transects at the western side of the PA collected during summer and winter of 2008 and are presented transects across the Scotia Sea (ME) in the months of September and October of 2008. The collected potential temperature values were in the range from -1.89º C to 2.32ºC, the minimum values are related to areas of sea ice formation and the maximum amounts to dives through the Antarctic Circumpolar Current (ACC) in the open sea and towards the South Georgia Islands. The salinity values have variations between 32.36 and 35.03 psu, these values result from different processes, being related to melting and formation of sea ice. The large region sampled allowed us to identify during the study period several water masses from -S diagrams, they are: Circumpolar Deep Water (CDW), Winter Water (WW), Low Salinity Shelf Water xii (LSSW), Antarctic Surface Water (AASW), High Salinity Shelf Water (HSSW), Upper and Bottom Circumpolar Deep Water (UCDW and LCDW), Shelf Water (SW), Ice Shelf Water (ISW), Warm Deep Water (WDW) and Modified Warm Deep Water (MWDW).
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Le vivant dans le discours sur la pluralité des Mondes : l'exemple de l'oeuvre de John Wilkins (1614-1672) / The discourse on the living and the plurality of worlds : some examples from the work of John Wilkins (1614-1672)Bouyre, Claire 06 November 2015 (has links)
En 1638, paraît en Angleterre un ouvrage de John Wilkins (1614 - 1672), traitant de la pluralité des Mondes et plus précisément de la découverte d’un nouveau Monde : la Lune. Grâce à une argumentation dialectique, l’auteur tente de montrer la similarité entre la Terre et notre satellite. Il s’appuie pour cela sur le modèle copernicien et sur les observations astronomiques de Galilée. De cette similarité, en résulte, selon lui, l’idée que la Lune est peut-être habitée comme la Terre, par des êtres qu’il nomme Sélénites. Il ajoute qu’il serait possible de s’y rendre, et de commercer avec les habitants. L’objectif de cette thèse est d’étudier la place des sciences du vivant dans les théories sur la pluralité des Mondes, principalement dans l’œuvre de John Wilkins, et les différentes implications littéraires, théologiques et philosophiques qui en découlent. / In 1638, a book is published in England by John Wilkins (1614-1672), dealing with the plurality of Worlds, and more specifically the discovery of a New World: the Moon. With a dialectical reasoning, the author tries to show the similarities between the Earth and the Moon. For this he uses the Copernican model and astronomical observations of Galileo. From these similarities, Wilkins suggests the idea that the moon could be harboring living beings like Earth and then conjecture on the nature of its inhabitants, the Selenites. He writes that it may be possible one day to reach the Moon and trade with its inhabitants. The purpose of our work is to study the living in the discourse on the plurality of worlds, and observe its place in the work of Wilkins.
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Modelling of failureBjörklund, Oscar January 2008 (has links)
<p>This report is a review of some failure models today used for determine failure in thin sheets of high strength steels. Focus has been given on phenomenlogical models and only some simple simulations have been carried out. The phenomenlogical models that have been summarized here are of four different categories, namely stress based, strain based, combined stress and strain based and damaged models. However, the simulations have only been preformed for some of the models.</p>
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Modelling of failureBjörklund, Oscar January 2008 (has links)
This report is a review of some failure models today used for determine failure in thin sheets of high strength steels. Focus has been given on phenomenlogical models and only some simple simulations have been carried out. The phenomenlogical models that have been summarized here are of four different categories, namely stress based, strain based, combined stress and strain based and damaged models. However, the simulations have only been preformed for some of the models.
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As good as gold : money, the market, and morality in American literature, 1857-1914 /Wilson, Robert Andrew, January 2005 (has links)
Thesis (Ph. D.)--Lehigh University, 2005. / Includes vita. Includes bibliographical references (leaves 225-238).
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Neoliberalism and social patterns : constructions of home and community in contemporary New Zealand fiction : a thesis presented in partial fulfilment of the requirements for the degree of Masters of Arts in English at Massey University, Albany, New ZealandShaw, Kirsten Elizabeth January 2007 (has links)
Constructions of home, family and community as ways of belonging have been ongoing discourses in New Zealand. This thesis examines constructions of home and family in works of fiction by four contemporary New Zealand authors: Alice Tawhai, Charlotte Grimshaw, Witi Ihimaera and Damien Wilkins. It asks how the main sociological characteristics of the period are presented and performed through fiction. Through these characters and their situations these authors expose the social fantasy of contemporary New Zealand society: that of individual reflexive opportunity. The twentieth century has seen a changing social fabric with loosening of bonds and the increase of individualism. The New Zealand way of life is changing, with increasing interconnectedness of the world through globalisation. Neo-liberal ideology, itself a response to globalising effects, has exacerbated social fragmentation and income disparity. Neoliberalism, a retreat of the state from both financial control and support of individuals, presumes a logic of market-forces and rational choice based on the maximisation of opportunity. This has implications for the individual’s sense of self and ways of belonging as the New Zealand subject is increasingly premised on personal responsibility. This thesis looks at the economic and sociological analyses of neoliberalism and asks if they are confirmed in the fiction.
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Female Inheritors of Hawthorne's New England Literary TraditionAdams, Dana W. (Dana Wills) 08 1900 (has links)
Nineteenth-century women were a mainstay in the New England literary tradition, both as readers and authors. Indeed, women were a large part of a growing reading public, a public that distanced itself from Puritanism and developed an appetite for novels and magazine short stories. It was a culture that survived in spite of patriarchal domination of the female in social and literary status. This dissertation is a study of selected works from Nathaniel Hawthorne, Sarah Orne Jewett, and Mary E. Wilkins Freeman that show their fiction as a protest against a patriarchal society. The premise of this study is based on analyzing these works from a protest (not necessarily a feminist) view, which leads to these conclusions: rejection of the male suitor and of marriage was a protest against patriarchal institutions that purposely restricted females from realizing their potential. Furthermore, it is often the case that industrialism and abuses of male authority in selected works by Jewett and Freeman are symbols of male-driven forces that oppose the autonomy of the female. Thus my argument is that protest fiction of the nineteenth century quietly promulgates an agenda of independence for the female. It is an agenda that encourages the woman to operate beyond standard stereotypes furthered by patriarchal attitudes. I assert that Jewett and Freeman are, in fact, inheritors of Hawthorne's literary tradition, which spawned the first fully-developed, independent American heroine: Hester Prynne.
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