Disnea progresiva en varón de 47 años

We report the case of a 47 year old male whose cardinal symptom was progressive dyspnea. We describe the diag- nostic process highlighting the usefulness of pulmonary and cardiac ultrasound. We stress the importance in this patient to take into account their personal history (Hodgkin’s lymphoma treated more than 10 years earlier) and the finding of a left bundle branch block in the electrocardiogram.Presentamos el caso de un varón de 47 años cuyo síntoma cardinal era la disnea progresiva. Describimos su proceso diagnóstico destacando la utilidad de la ecografía pulmonar y cardíaca. Resaltamos la importancia en este enfermo de tener en cuenta sus antecedentes (linfoma de Hodgkin tratado hacía más de 10 años) y el hallazgo de un bloqueo de rama izquierda en el electrocardiograma

Multi-messenger Observations of a Binary Neutron Star Merger

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ∼ 1.7 {{s}} with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg2 at a luminosity distance of {40}-8+8 Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 {M}ȯ . An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at ∼ 40 {{Mpc}}) less than 11 hours after the merger by the One-Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over ∼10 days. Following early non-detections, X-ray and radio emission were discovered at the transient’s position ∼ 9 and ∼ 16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC 4993 followed by a short gamma-ray burst (GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta.</p

Géneros híbridos y libros mixtos en el Siglo de Oro

Este dossier pretende reflexionar sobre algunas obras que hoy percibimos a medio camino entre dos formas de expresión artística, como la prosa y el verso ; o entre dos disciplinas, como la historia y la literatura, o entre ésta, la filosofía y la política. Es posible que en el Siglo de Oro los diversos asedios a los géneros clásicos —épica, lírica, dramática— obedezcan a la creatividad de los grandes autores y al espíritu polémico con que recibían determinadas innovaciones. Pero también lo es que el mundo de la imprenta, denominada hoy industria editorial, intuyera la rentabilidad de mezclar poesía e imagen, o escritura y grabado, para ofrecer un producto híbrido, más atractivo a los lectores ; o de lanzar folletos de circunstancias, como los libelos políticos, que no estaban entre los géneros canónicos. Los siete artículos de la monografía analizan algunos de dichos fenómenos a partir de obras mixtas, y como contrapunto se formula una nueva hipótesis sobre el género (o géneros) y los propósitos del Criticón de Baltasar Gracián. Ce dossier propose une réflexion autour de certaines œuvres, perçues actuellement à mi-chemin entre deux genres artistiques, comme la prose et le vers, ou bien entre deux disciplines : histoire et littérature, littérature et philosophie, ou encore littérature et politique. Il est probable qu’au Siècle d’or, les divers assauts faits aux genres classiques — épique, lyrique, dramatique — soient dus à la créativité des grands auteurs de l’époque et à l’esprit de polémique dans lequel certaines nouveautés étaient reçues. Mais il est vraisemblable aussi que le monde de l’imprimerie, que nous appelerions aujourd’hui édition, a pu entrevoir l’intérêt de mélanger la poésie et l’image, ou l’écriture et la gravure, pour proposer un produit hybride, plus attirant pour les lecteurs ; ou bien de lancer des brochures de circonstance, tels que les libelles politiques, qui ne faisaient pas partie des genres canoniques. Les sept articles de notre monographie analysent certains desdits phénomènes, à partir de certaines œuvres mêlées, tandis que le contrepoint propose une nouvelle hypothèse sur le genre (les genres) et les intentions du Criticón de Baltasar Gracián. This dossier looks at some works that today are viewed as falling somewhere between two forms of artistic expression such as prose and verse, or between two disciplines such as history and literature, or again between literature, philosophy and politics. In the Golden Age the various assaults on the classic genres—epic, lyric, dramatic— may have been a product of the creativity of great writers and the argumentative spirit in which they received certain innovations. But it is also possible that the generality of printers—which today we call the publishing industry—anticipated the profits to be derived from mixing poetry and image, or writing and engraving, to offer a hybrid product, more attractive o readers; or of putting out gossip sheets,such as political libels, which were not among the standard genres. The seven articles in this monograph analyse these phenomena in the light of some mixed works; in counterpoint it offers a new hypothesis regarding the genre (or genres) and the intent behind Baltasar Criticón

Multi-messenger Observations of a Binary Neutron Star Merger

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of $\sim$1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg$^2$ at a luminosity distance of $40^{+8}_{-8}$ Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 Msun. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at $\sim$40 Mpc) less than 11 hours after the merger by the One-Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over $\sim$10 days. Following early non-detections, X-ray and radio emission were discovered at the transient's position $\sim$9 and $\sim$16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. (Abridged