987 resultados para Philip II, King of Macedonia, 382-336 B.C.


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First edition. Wright II, 1231.

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Mode of access: Internet.

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Este artículo analiza la existencia de un posible ritual en la antigua Macedonia que fuese similar al Akîtu babilonio. Pensamos que la victoria de Zeus sobre sus enemigos en la gigantomaquia y tifonomaquia fue celebrada por los reyes macedonios para fortalecer su posición en el poder. Aunque no hay evidencias directas de ello, tenemos una serie de diferentes fuentes en las cuales los macedonios están relacionados directa o indirectamente con Tifón y los gigantes. Además, la estratégica importancia del monte Olimpo para los macedonios nos hace pensar que la victoria de Zeus sobre las fuerzas del mal fue conmemorada de alguna forma por ellos.

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High-resolution spectroscopic VLT/UVES observations are presented for the B-type main-sequence star, AV 304, in the Small Magellanic Cloud (SMC). These spectra have been analysed using LTE model-atmosphere techniques, to derive stellar atmospheric parameters and chemical compositions. As AV 304 is located within the hydrogen burning main-sequence band, its chemical composition should reflect that of the SMC interstellar medium (ISM). A detailed line-by-line differential analysis has been undertaken relative to a Galactic comparison star. A general metal deficiency for the a-process elements O, Si & S of -0.43 +/- 0.05 dex is found for AV 304, with iron having a similar underabundance. Oxygen may be relatively over- abundant by similar to0.1 dex and carbon and aluminium underabundant by similar to0.2 dex. A large nitrogen underabundance (of -1.2 dex relative to hydrogen and -0.7 dex relative to iron) is found. This is interpreted in terms of the CNO bi-cycle having been suppressed in the SMC. Furthermore, the large nitrogen deficiency is in excellent agreement with that found for SMC H II regions. Indeed, this represents a first for stellar astrophysics - confirming the low base-line nitrogen composition of the SMC ISM (viz. 12+log(N/H) similar to 6.66 +/- 0.10 dex).

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In the paper of Bonora et al. (2008) [3] we have shown, in the context of type II superstring theory, the classification of the allowed B-field and A-field configurations in the presence of anomaly-free D-branes, the mathematical framework being provided by the geometry of gerbes. Here we complete the discussion considering in detail the case of a stack of D-branes, carrying a non-abelian gauge theory, which was just sketched in Bonora et al. (2008) [3]. In this case we have to mix the geometry of abelian gerbes, describing the B-field, with the one of higher-rank bundles, ordinary or twisted. We describe in detail the various cases that arise according to such a classification, as we did for a single D-brane, showing under which hypotheses the A-field turns out to be a connection on a canonical gauge bundle. We also generalize to the non-abelian setting the discussion about "gauge bundles with non-integral Chern classes", relating them to twisted bundles with connection. Finally, we analyze the geometrical nature of the Wilson loop for each kind of gauge theory on a D-brane or stack of D-branes.

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Paged continuously.

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The work of a group of English writers each letter being signed by an initial indicating the author, as follows. P.-Philip Yorke; C.-Charles Yorke; R.-G.H. Rooke; G.-John Green; W.-Daniel Wray; H.-Henry Heaton; E.-Wm. Heberden; O.-Henry Coventry; L.-John Lawry; T.-Catherine Talbot; B.-Thomas Birch; S.-Samuel Salter. The work was edited by Thomas Birch, the brothers Yorke having the largest share in the composition of the letters.