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New mobile formats promoted by “internet giants” such as Google, Facebook or Apple establish a new intermediation process which brings about both opportunities and challenges, but also threats to digital media. Instant Articles, AMP and Snapchat Discover optimize mobile content distribution in a ...


We present the first results of our optical spectroscopy program aimed to provide redshifts and identifications for the X-ray sources in the Extended Chandra Deep Field South. A total of 339 sources were targeted using the IMACS spectrograph at the Magellan telescopes and the VIMOS spectrograph a...


Background: Optical retarders are key elements for the control of the state of polarization of light, and their wavelength dependance is of great importance in a number of applications. Methods: We apply a well-known technique for determinig the spectr


Here we present previously unpublished optical spectra of supernova (SN) 2001ig, a Type IIb SN, from about a week after explosion until nearly one year later. The earliest spectrum consists of only a few broad absorption features, but soon more common Typ


We present the first results of our optical spectroscopy program aimed to provide redshifts and identifications for the X-ray sources in the Extended Chandra Deep Field South. A total of 339 sources were targeted using the IMACS spectrograph at the Magell


Cortés Jacob, Ester Saide, 1947-Serrano, Agustina[Imágenes esponsales en el Cantar de los cantares y en El Castillo interior: Aproximación al “matrimonio espiritual”]Imágenes esponsales en el Cantar de los cantares y en El Castillo interior: Aproximación al “matrimonio espiritual”

Costadoat, Jorge[Identidad de la Teología Latinoamericana y la Teología de la Liberación]Identidad de la Teología Latinoamericana y la Teología de la Liberación

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