285 resultados para 2804


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La popularidad de las biografías noveladas en los años 20-30 del siglo XX en España se hace notar en las ediciones de la Revista de Occidente, en las que se publican tanto textos extranjeros como biografías escritas por Fernando Vela, Benjamín Jarnés o Rosa Chacel. Definidas por los propios autores como producciones 'entre la historia y la literatura', cuyo proceso de creación se basa en la evocación o intuición de la vida biografiada, la biografía se aleja de la 'imparcialidad documental del historiador' para penetrar en el 'punto de vista del escritor'. Nuestro trabajo pretende mostrar la importancia que adquiere este género dentro de la Revista de Occidente, al operar como una especie legitimador de la teoría 'vitalista' y el perspectivismo de Ortega y Gasset, una vez que invierte el concepto de historia, que deja de ser un proceso colectivo para convertirse en la expresión de un ser en el mundo y establece el protagonismo del individuo, sea el biógrafo o el biografiado

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New geological and geophysical data on the Amirante Arc, which locates to the south of the Seychelles Islands, are presented. These data were obtained by Pacific Oceanological Institute during the 33-rd cruise of R/V Professor Bogorov in 1990. The Amirante Arc represents a seamount chain, which has submeridional strike and total length about 400 km. To the west of the Amirante Arc there are a deep sea trench and a back-arc basin, i.e. this area is characterized by structural elements associated with the subduction zone of Western Pacific type. According to our data the Amirante Arc is composed by tholeiites of ocean plateau type. This facts are evidences that the Amirante Arc differs from typical Pacific island arcs. This gives an opportunity to distinguish a special type of oceanic structures, i.e. non-volcanic (amagmatic) ridges. The Amirante Ridge has been probably formed as a result of oceanic crust heaping due to horizontal displacements of its blocks in the process of spreding ridge formation in the Indian Ocean during Cretaceous-Paleogene.

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Genetic diversity of baltic F. vesiculosus is low compared to other populations which might jeopardize their potential for adaptation to climate change. Especially the early life-stage F. vesiculosus may be threaten by ocean warming and acidification. To test this, we exposed F. vesiculosus germlings to warming and acidification in the near-natural scenario in the "Kiel Outdoor Benthocosms" maintaining the natural variation of the Kiel Fjord, Germany (54°27 'N, 10°11 'W) in all seasons (spring 2013 - 2014). Warming was simulated by using a delta treatment adding 5 °C and by increasing pCO2 at 1000 µatm. Warming positively affected germlings' growth in spring and in summer but decreased non-photochemical quenching in spring and survival in summer. Acidified conditions showed much weaker effects than warming. The high genotypic variation in stress sensitivity as well as the enhanced survival at high diversity levels indicate higher potential for adaptation for genetically diverse populations. We conclude that the combination of stressors and season determines the sensitivity to environmental stress and that genetic variation is crucial for the adaptation to climate change stress.

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