998 resultados para Siglos VIII-XV


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El simbolismo que cumple la naturaleza dentro de la lírica popular española es muy estudiado por críticos como Margit Frenk, quien analiza el significado lexicalizado del viento, las flores, el prado, los animales en los poemas populares. Estos no solo se presentan en los poemas líricos del siglo XV al XVII, recopilados por M. Frenk en su libro Nuevo corpus de la antigua lírica popular hispánica siglos XV al XVII, sino que además se trasladan en el tiempo y el espacio llegando a la Argentina y perduran todavía en los siglos XX y XXI. Siendo estos recopilados en distintas ediciones, trabajaremos con el Romancero tradicional argentino de Gloria Chicote como representante de los poemas populares más conocidos encontrados en Argentina que incluye poemas tales como La dama y el pastor, Don Gato, Las señas del esposo, entre otros. En este marco se propone interpretar el significado del agua (ríos, mares, lluvias, fuentes) y la tierra (prados, valles, montañas) empleados como símbolos en un conjunto de poemas populares- tradicionales que aparecen y se resignifican, en algunos casos, desde la antigua lírica popular española hasta las coplas y romances argentinos modernos

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El simbolismo que cumple la naturaleza dentro de la lírica popular española es muy estudiado por críticos como Margit Frenk, quien analiza el significado lexicalizado del viento, las flores, el prado, los animales en los poemas populares. Estos no solo se presentan en los poemas líricos del siglo XV al XVII, recopilados por M. Frenk en su libro Nuevo corpus de la antigua lírica popular hispánica siglos XV al XVII, sino que además se trasladan en el tiempo y el espacio llegando a la Argentina y perduran todavía en los siglos XX y XXI. Siendo estos recopilados en distintas ediciones, trabajaremos con el Romancero tradicional argentino de Gloria Chicote como representante de los poemas populares más conocidos encontrados en Argentina que incluye poemas tales como La dama y el pastor, Don Gato, Las señas del esposo, entre otros. En este marco se propone interpretar el significado del agua (ríos, mares, lluvias, fuentes) y la tierra (prados, valles, montañas) empleados como símbolos en un conjunto de poemas populares- tradicionales que aparecen y se resignifican, en algunos casos, desde la antigua lírica popular española hasta las coplas y romances argentinos modernos

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Universidade Estadual de Campinas . Faculdade de Educação Física

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We report the discovery by the CoRoT space mission of a transiting brown dwarf orbiting a F7V star with an orbital period of 3.06 days. CoRoT-15b has a radius of 1.12(-0.15)(+0.30) R(Jup) and a mass of 63.3 +/- 4.1 M(Jup), and is thus the second transiting companion lying in the theoretical mass domain of brown dwarfs. CoRoT-15b is either very young or inflated compared to standard evolution models, a situation similar to that of M-dwarf stars orbiting close to solar-type stars. Spectroscopic constraints and an analysis of the lightcurve imply a spin period in the range 2.9-3.1 days for the central star, which is compatible with a double-synchronisation of the system.

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Aims. We report the discovery of very shallow (Delta F/F approximate to 3.4 x 10(-4)), periodic dips in the light curve of an active V = 11.7 G9V star observed by the CoRoT satellite, which we interpret as caused by a transiting companion. We describe the 3-colour CoRoT data and complementary ground-based observations that support the planetary nature of the companion. Methods. We used CoRoT colours information, good angular resolution ground-based photometric observations in- and out- of transit, adaptive optics imaging, near-infrared spectroscopy, and preliminary results from radial velocity measurements, to test the diluted eclipsing binary scenarios. The parameters of the host star were derived from optical spectra, which were then combined with the CoRoT light curve to derive parameters of the companion. Results. We examined all conceivable cases of false positives carefully, and all the tests support the planetary hypothesis. Blends with separation >0.40 '' or triple systems are almost excluded with a 8 x 10(-4) risk left. We conclude that, inasmuch we have been exhaustive, we have discovered a planetary companion, named CoRoT-7b, for which we derive a period of 0.853 59 +/- 3 x 10(-5) day and a radius of R(p) = 1.68 +/- 0.09 R(Earth). Analysis of preliminary radial velocity data yields an upper limit of 21 M(Earth) for the companion mass, supporting the finding. Conclusions. CoRoT-7b is very likely the first Super-Earth with a measured radius. This object illustrates what will probably become a common situation with missions such as Kepler, namely the need to establish the planetary origin of transits in the absence of a firm radial velocity detection and mass measurement. The composition of CoRoT-7b remains loosely constrained without a precise mass. A very high surface temperature on its irradiated face, approximate to 1800-2600 K at the substellar point, and a very low one, approximate to 50 K, on its dark face assuming no atmosphere, have been derived.

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293T and Sk-Hep-1 cells were transduced with a replication-defective self-inactivating HIV-1 derived vector carrying FVIII cDNA. The genomic DNA was sequenced to reveal LTR/human genome junctions and integration sites. One hundred and thirty-two sequences matched human sequences, with an identity of at least 98%. The integration sites in 293T-FVIIIDB and in Sk-Hep-FVIIIDB cells were preferentially located in gene regions. The integrations in both cell lines were distant from the CpG islands and from the transcription start sites. A comparison between the two cell lines showed that the lentiviral-transduced DNA had the same preferred regions in the two different cell lines.

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Os Schwannomas vestibulares são responsáveis por 80 a 90% dos tumores do ângulo ponto-cerebelar. A atual incidência é estimada em 0,8% a 2,5% da população mundial. A hipoacusia unilateral e progressiva é o sintoma mais precoce e freqüente, sendo o tinido a segunda queixa mais comum. Estudos demonstram que apenas 5% dos pacientes com schwannoma vestibular têm exames audiométricos normais. No caso em foco é relatado hipoestesia da hemiface com diminuição do reflexo córneo palpebral ipsilateral, hipoestesia da porção póstero-superior do pavilhão auditivo (sinal de Hitzelberger positivo), diminuição do lacrimejamento, Romberg sensibilizado positivo. Observava-se discreto desvio da rima labial para a esquerda, não apresentando outras alterações nos demais pares cranianos. À acumetria, não havia alteração da sensibilidade auditiva em ambas as vias aéreas.