980 resultados para Wolf, Hieronymus, 1516-1580.


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A chronicle of the Wolf family of Schluechtern in Hesse (Germany), reacing back to 1680

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1 tarjeta postal y 2 cartas (mecanografiadas y manuscritas) ; entre 150x105mm y 210x297mm

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Eterio Pajares, Raquel Merino y José Miguel Santamaría (eds.)

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Este trabalho faz uma análise comparativa de algumas das principais obras de história literária do Brasil, publicadas no século XIX e início do século XX, escritas, respectivamente, por Ferdinand Wolf, Sílvio Romero e José Veríssimo. São analisadas as concepções de nacionalismo, de história e de literatura que veiculam, relacionando-as com as ideias que circulavam à época em que foram escritos Le Brésil Littéraire, de Ferdinand Wolf, a História da Literatura Brasileira, de Sílvio Romero, e a obra homônima de José Veríssimo. Sendo assim, além de analisar as obras comparativamente, o presente trabalho recupera o significado histórico que comportam, uma vez que as insere no quadro de referências vigentes no momento em que apareceram. Partindo do pressuposto de que a característica principal desses textos é a ideia de nacionalismo, estudam-se os significados atribuídos a este termo desde meados do século XIX até inícios do século XX, momento em que foram escritas aquelas histórias literárias. Ademais, relacionam-se as narrativas às variadas formas de se pensar a história, enquanto disciplina, nesse período, procurando identificá-las pelo modo como constroem a explicação histórica. Por fim, as ideias que apresentam a respeito da literatura são articuladas não só às concepções de nacionalismo e de história que aqueles textos veiculam, como também à reflexão que então se fazia

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This study reports a method for high-frequency shoot organogenesis and plant establishment of Potentilla potaninii Wolf. Hypocotyl and cotyledon explants of P. potaninii were cultured on Murashige and Skoog (MS) medium supplemented with various concentrations of benzyladenine (BA) and alpha-naphthaleneacetic acid (NAA) to induce adventitious shoot formation for micropropagation. The highest frequency of adventitious shoot regeneration was achieved from hypocotyl and cotyledon explants grown on MS medium supplemented with 5.0 mg l(-1) BA and 1.0 mg l(-1) NAA. The regenerated shoots rooted most efficiently on half-strength MS medium supplemented with 1.0 mg l(-1) NAA and 0.5 mg l(-1) indole-3-acetic acid or indole-3-butyric acid. The acclimatized plants with normal morphology and growth characters flowered and set seeds in the following year.

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Jupiter Family comets (JFCs) are short period comets which have recently entered the inner solar system, having previously orbited in the Kuiper Belt since the formation of the planets. We used two nights on the 3.6 m New Technology Telescope (NTT) at the European Southern Observatory, to obtain VRI photometry of three JFCs; 7P/Pons-Winnecke, 14P/Wolf and 92P/Sanguin. These were observed to be stellar in appearance. We find mean effective radii of 2.24 ± 0.02 km for 7P, 3.16 ± 0.01 km for 14P and 2.08 ± 0.01 km for 92P, assuming a geometric albedo of 0.04. From light-curves for each comet we find rotation periods of 7.53 ± 0.10 and 6.22 ± 0.05 h for 14P and 92P respectively. 7P exhibits brightness variations which imply a rotation period of 6.8 = Prot = 9.5 h. Assuming the nuclei to be ellipsoidal the measured brightness variations imply minimum axial ratios a/b of 1.3 ± 0.1 for 7P and 1.7 ± 0.1 for both 14P and 92P. This in turn implies minimum densities of 0.23 ± 0.08 g cm-3 for 7P, 0.32 ± 0.02 g cm-3 for 14P and 0.49 ± 0.06 g cm-3 for 92P. Finally, we measure colour indices of (V-R) = 0.40 ± 0.05 and (R-I) = 0.41 ± 0.06 for 7P/Pons-Winnecke, (V-R) = 0.57 ± 0.07 and (R-I) = 0.51 ± 0.06 for 14P/Wolf, and (V-R) = 0.54 ± 0.04 and (R-I) = 0.54 ± 0.04 for 92P/Sanguin.

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We present Gemini-N GMOS and CFHT MOS spectroscopy of Wolf-Rayet candidates in the Local Group dwarf galaxy IC 10 that were previously identified by Massey et al. and Royer et al. From the present spectroscopic survey, the WC/WN ratio for IC 10 remains unusually high, given its low metallicity, although none of the WC9 stars suspected from narrow-band imaging are confirmed. Our spectroscopy confirms 9 newly discovered Wolf-Rayet candidates from Royer et al., whilst spectral types of 14 Wolf-Rayet stars previously observed by Massey & Armandroff are refined here. In total, there are 26 spectroscopically confirmed Wolf-Rayet stars in IC 10. All but one of the fourteen WC stars are WC4-6 stars, the exception being # 10 from Massey et al., a broad-lined, apparently single WC7 star. There are a total of eleven WN stars, which are predominantly early WN3-4 stars, but include a rare WN10 star, # 8 from Royer et al. # 5 from Massey et al. is newly identified as a transition WN/C star. Consequently, the WC/WN ratio for IC10 is 14/11similar to1.3, unusually high for a metal-poor galaxy. Re-evaluating recent photometric data of Massey & Holmes, we suggest that the true WC/WN ratio may not be as low as similar to0.3. Finally, we present ground-based finding charts for all confirmed WR stars, plus HST/WFPC2 charts for twelve cases.