982 resultados para Pedro Nolasco , Santo, ca. 1182-ca.1250
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Opera omnia S. Antonii Paduani ...
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Descripción basada en CCPB.
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Mode of access: Internet.
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Resumen: En este artículo, el autor expone la ética de san Clemente de Alejandría recurriendo principalmente a El Pedagogo y al Protréptico. Da especial importancia a conceptos como salvación, libre albedrío, consejo, imitación, entre otros. Después, el autor realiza una crítica buscando retomar algunas tesis que pueden mantener cierta vigencia para el planteamiento de una ética hodierna, buscando que esta última sea filosófica. Pero es importante tener presente que la ética por naturaleza recurre a la tradición, de la cual se alimenta para elaborar su reflexión filosófica. En otras palabras, la ética no parte desde el vacío, sino en el seno de una tradición, uno de cuyos representantes y constructores, en el contexto del mundo occidental, es Clemente de Alejandría.
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Resumen: El salmo 106 (107) es una confesión de la misericordia de Dios que hace desvanecer las necesidades y angustias de quien clama a Él en distintas instancias de su camino de purificación y perfección. A la vez que confiesa, exhorta a la confesión. Esta confesión está estrechamente unida a la confianza y al abandono en Dios a las que, a su vez, se dirige dicha purificación. En la traducción jerónima iuxta Hebraeos hay marcas lingüísticas que indican el sentido de esta confesión, especialmente mediante la estructura confiteor + dativo.
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Resumen: Muy a menudo se escucha hablar de la Iglesia como santa y prostituta o como santa y pecadora, invocando como argumento decisivo que los Santos Padres decían que la Iglesia es una casta meretrix. Algún que otro teólogo lo pone por escrito sin citar la fuente; lo mismo dice algún predicador. Según parece, este testimonio patrístico cuadraría para poder hablar de los pecados de la Iglesia. Ahora bien, respecto a esta fórmula lo primero que hay que señalar es que se trata de un hapax de la literatura patrística, sólo se encuentra una vez en San Ambrosio. La figura retórica utilizada indica algo insólito que el lector moderno debe tratar de entender. Sobre todo, porque para quien acuñó la frase, lejos de aludir a algo pecaminoso, quiere indicar la santidad de la Iglesia. El artículo presenta la reflexión eclesiológica de este padre de la Iglesia que lo lleva a expresarse de esa manera y, a la vez, invita a situar en su contexto y en sus perspectivas concretas las afirmaciones patrísticas para traducirlas, interpretarlas y relacionarlas con nuestro modo de plantear los problemas.
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Data on seawater carbon isotope in the Mesoproterozoic and Neoproterozoic is abundant. However, the sulfur isotopic age curve of seawater sulfates determined through the analysis of sulfur isotopic composition of marine evaporite is uncertain in the Mesoproterozoic and Neoproterozoic since evaporites are generally rare in Precambrian. The Mesoproterozoic and Neoproterozoic Carbonate Formations preserve not only the carbon isotopic records, but also the sulfur isotopic records of coeval seawater in the Huabei Platform and the Yangtze Platform, China. Sulfur isotopic composition can be determined by the extraction of trace sulfate from carbonate samples. Successive measurements of sulfur and carbon isotopic compositions of carbonate samples from the Mesoproterozoic and Neoproterozoic strata in the Huabei Platform and the Yangtze Platform was accomplished through the extracting of trace sulfate from carbonates. Sulfur and carbon isotopic compositions of coeval seawater were obtained from analytical results of sulfur and carbon isotopes of the same sample without diagenetic alteration. The high-resolution age curve of sulfur isotope given in this paper may reflect the trend of variations in sulfur isotope composition of seawater sulfates during the Mesoproterozoic and Neoproterozoic. It can be correlated with the characteristics of variation in age curve of carbon isotope of coeval seawater carbonates. The δ34S values of seawater varied from +10.3-37.0‰ during the Mesoproterozoic, which took on oscillated variation on the whole. The δ34S values took on high values in the Mesoproterozoic Chuanlinggou stage, Tuanshanzi stage Tieling stage and in Neoproterozoic Jing'eryu stage. The average of those was about +30‰. The sulfates have low δ34S values in the Mesoproterozoic Yangzhuang stage and Hongshuizhuang stage, The average of those was all lower than +20‰. There occured large-amplitude changs in δ34S values of seawater during the Mesoproterozoic. Large-amplitude oscillate of 534S values occured in the intervals of 1600~1400Ma and 1300~1200Ma. The δ13C values of seawater are mostly negative in Changcheng stage of late Paleoproterozoic, -0 ± 1‰ range in Jixian stage of Mesoproterozoic , and the positive 2±2‰ commonly in early Neoproterozoic Jing'eryu stage. From 1000 Ma to 900 Ma, about 108 years interval of oceanic 513C record is shortage. At the end of Paleoproterozoic (1700 - 1600 Ma), the oceanic 813C values change from -3‰ to 0‰, but strongly oscillate near 1600 Ma. Two larger variations of seawater 513C values occur in the Mesoproterozoic: one is a cycle of about 4%o happens at ca. 1400 Ma; another is rise from >2‰ to>5‰ at ca. 1250 Ma and then become stable at the near 1000 Ma. There appears a large positive excursion over +20‰ in 534S value of ancient seawater sulfates in the early Doushantuo stage. Simultaneously, 8 C values of ancient seawater occur a positive excursion reaching 10‰. These allow δ4S values and 513C values to reach high values of+51.7‰ and +6.9‰, respectively. The range of variation in 834S values of seawater is relatively narrow and 513C values are quite high in the middle Doushantuo stage. Then, δ34S values of seawater become oscillating, the same happens in δ13C values. Negative excursions in 834S values and 813C values occur simultaneously at the end of the Doushantuo stage, and the minimum of δ34S values and δ13C values dropped to -11.3‰ and -5.7‰, respectively. The ancient seawater in the Dengying stage has high δS values and δ13C values. Most of the δ34S values of the trace sulfate samples varied between +23.6‰ and +37.9‰ except two boundaries of the Dengying Formation, and the S13C values of the carbonate samples of the Dengying Formation varied between +0.5‰ and +5.0‰. There appeared large negative excursion in 834S values and δ13C values of ancient seawater at the bounder of Precambrian-Cambrian. The isotopic characteristics of sulfur and carbon implicated that the organic productivity and isotopic fractionation caused by biology were low and the palaeoceanic environment was quite unstable during the Mesoproterozoic. The increase and subsequent oscillation of seawater δ13C value occurred from 1700 to 1600 Ma and near 1300 Ma may be responsible to the two global tectonic events happened at coeval time. The characteristics of variation in sulfur and carbon isotopes of ancient seawater imply strong changes in oceanic environment, which became beneficial to inhabitation and propagation of organism. The organic production and the burial rate of organic carbon once reached a quite high level during the Doushantuo stage. However, the state of environment became unstable that means the global climate and the environment possibly were fluctuating and reiterating after the global glaciation. The negative excursions of S34S values and δ13C values occurring at the end of the Doushantuo stage represent a global event, which might be relative to the oxidation of deep seawater. The isotopic characteristics of sulfur and carbon implicated that there were a high organic productivity and a high burial rate of organic carbon in the Dengying stage. It is obvious that the palaeoceanic environment in Dengying stage was stable corresponding and beneficial for biology to inhabit and propagate except for the two boundaries. The tendency of sulfur and carbon isotopic variations maybe resulted from the gradual oxygenation of ocean environment during the Dengying stage. It has been reported that the secular variations of the sulfur isotopic compositions in seawater was negative correlated with that of carbon isotopic compositions. However, our results show that it is not the case. They were negatively correlated in some intervals and positively in some other intervals of the Mesoproterozoic and Neoproterozoic. The difference in correlation may be associated with the changes in conditions of redox in oceanic environment, e.g. sharp change of the oxidation-reduction interface. The strong changes in global environment may induce the abnormality to occur in the biogeo chemical S and C cycles in the ocean and accordingly sharp Variations in isotopic composition of seawater sulfur and carbon during the Mesoproterozoic and Neoproterozoic. Simultaneously, the global tectonism caused large changes of 87Sr/86Sr ratios. The leading factor that causes the variation in isotopic composition is different in the different intervals of the Mesoproterozoic and Neoproterozoic. Thus, there may exist different models of the biogeochemical S and C cycles in the ocean during the Mesoproterozoic and Neoproterozoic.
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UANL
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Marca tip. en port. y en 2P8v
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Marca tip. en port. y en 2P8v