738 resultados para Fernández de Lizardi, José Joaquín, 1776-1827
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Mode of access: Internet.
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Mode of access: Internet.
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"Catalogue des espèces de bois les plus connues de la Guiane," pp. 23-44.
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This title was originally published in 1801-1802. It has been "republished with as date at Madrid 1827, p. [1]-cxxxvi, [1]-625."--Cf. Tax. Lit.
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Mode of access: Internet.
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Bibliographical footnotes.
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Mode of access: Internet.
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In verse.
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Mode of access: Internet.
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Mode of access: Internet.
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Según Palau T. XI no. 191023, es el tomo V de la obra iniciada por Juan Eusebio Nieremberg (con diferentes títulos en cada volumen, pero concebida unitariamente) y que continuaron Alfonso de Andrade y José Cassani.
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Translation of Memoirs of the Mexican Revolution.
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The exponential growth of studies on the biological response to ocean acidification over the last few decades has generated a large amount of data. To facilitate data comparison, a data compilation hosted at the data publisher PANGAEA was initiated in 2008 and is updated on a regular basis (doi:10.1594/PANGAEA.149999). By January 2015, a total of 581 data sets (over 4 000 000 data points) from 539 papers had been archived. Here we present the developments of this data compilation five years since its first description by Nisumaa et al. (2010). Most of study sites from which data archived are still in the Northern Hemisphere and the number of archived data from studies from the Southern Hemisphere and polar oceans are still relatively low. Data from 60 studies that investigated the response of a mix of organisms or natural communities were all added after 2010, indicating a welcomed shift from the study of individual organisms to communities and ecosystems. The initial imbalance of considerably more data archived on calcification and primary production than on other processes has improved. There is also a clear tendency towards more data archived from multifactorial studies after 2010. For easier and more effective access to ocean acidification data, the ocean acidification community is strongly encouraged to contribute to the data archiving effort, and help develop standard vocabularies describing the variables and define best practices for archiving ocean acidification data.
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Coastal ocean acidification is expected to interfere with the physiology of marine bivalves. In this work, the effects of acidification on the physiology of juvenile mussels Mytilus galloprovincialis were tested by means of controlled CO2 perturbation experiments. The carbonate chemistry of natural (control) seawater was manipulated by injecting CO2 to attain 2 reduced pH levels: -0.3 and -0.6 pH units as compared with the control seawater. After 78 d of exposure, we found that the absorption efficiency and ammonium excretion rate of juveniles were inversely related to pH. Significant differences among treatments were not observed in clearance, ingestion and respiration rates. Coherently, the maximal scope for growth and tissue dry weight were observed in mussels exposed to the pH reduction delta pH=-0.6, suggesting that M. galloprovincialis could be tolerant to CO2 acidification, at least in the highly alkaline coastal waters of Ria Formosa (SW Portugal).
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El sentido de la visión constituye la fuente principal de adquisición de información del individuo, de aquí la importancia de un buen diagnóstico y corrección, en su caso, de cualquier anomalía en la misma para un correcto aprendizaje, especialmente en los primeros años de escolarización. En este artículo se exponen los resultados de una encuesta pasada a maestros de centros educativos andaluces mediante la que se pretende poner de manifiesto sus conocimientos sobre las deficiencias visuales que pueden presentar sus alumnos, y la incidencia que podrían tener sobre su rendimiento escolar. Los resultados indican que dicho conocimiento se suele circunscribir a las anomalías de tipo refractivo, considerando que se hallan bien tratadas en sus alumnos. A pesar de la importancia que atribuyen a estas deficiencias sobre el aprendizaje escolar, piensan que otros factores pueden poseer un papel más relevante. Asimismo se consideran partidarios de recibir una formación más completa al respecto.