Observation of the full 12-hour-long transit of the exoplanet HD80606b. Warm-Spitzer photometry and SOPHIE spectroscopy

We present new observations of a transit of the 111-day-period exoplanet HD80606b. Using the Spitzer Space Telescope and its IRAC camera on the post-cryogenic mission, we performed a 19-hour-long photometric observation of HD80606 that covers the full transit of 13-14 January 2010. We complement this photometric data by new spectroscopic observations that we simultaneously performed with SOPHIE at Haute-Provence Observatory. This provides radial velocity measurements of the first half of the transit that was previously uncovered with spectroscopy. This new data set allows the parameters of this singular planetary system to be significantly refined. We obtained a planet-to-star radius ratio R_p/R_* = 0.1001 +/- 0.0006 that is slightly lower than the one measured from previous ground observations. We detected a feature in the Spitzer light curve that could be due to a stellar spot. We also found a transit timing about 20 minutes earlier than the ephemeris prediction; this could be caused by actual TTVs due to an additional body in the system or by underestimated systematic uncertainties. The sky-projected angle between the spin-axis of HD80606 and the normal to the planetary orbital plane is found to be lambda = 42 +/- 8 degrees thanks to the fit of the Rossiter-McLaughlin anomaly. This allows scenarios with aligned spin-orbit to be definitively rejected. Over the twenty planetary systems with measured spin-orbit angles, a few of them are misaligned; this is probably the signature of two different evolution scenarios for misaligned and aligned systems, depending if they experienced or not gravitational interaction with a third body. As in the case of HD80606b, most of the planetary systems including a massive planet are tilted; this could be the signature of a separate evolution scenario for massive planets in comparison with Jupiter-mass planets.Comment: 14 pages, 9 figures, 2 tables, accepted for publication in A&

Role of trans-Planckian modes in cosmology

Motivated by the old trans-Planckian (TP) problem of inflationary cosmology, it has been conjectured that any consistent effective field theory should keep TP modes `hidden' behind the Hubble horizon, so as to prevent them from turning classical and thereby affecting macroscopic observations. In this paper we present two arguments against the Hubble horizon being a scale of singular significance as has been put forward in the TP Censorship Conjecture (TCC). First, refinements of TCC are presented that allow for the TP modes to grow beyond the horizon while still keeping the de-Sitter conjecture valid. Second, we show that TP modes can turn classical even well within the Hubble horizon, which, as such, negates this rationale behind keeping them from crossing it. The role of TP modes is known to be less of a problem in warm inflation, because fluctuations start out usually as classical. This allows warm inflation to be more resilient to the TP problem compared to cold inflation. To understand how robust this is, we identity limits where quantum modes can affect the primordial power spectrum in one specific case.Comment: 33 pages, comments welcome; v2: References updated, matches published versio

Protocolo en el tratamiento de lesiones causadas por ondas expansivas: impacto sobre el diagnóstico tardío y una mejor oportunidad de manejo en un hospital académico nivel III – IV de atención

Introducción: Las lesiones producidas por ondas expansivas comprometen diferentes áreas anatómicas por su mecanismo de lesión y se traducen en traumatismos severos. En Colombia, las principales causas de estas lesiones las constituyen situaciones de guerra y ataques terroristas puesto que el país se ha visto inmerso en la violencia durante varios años. Material y Métodos: Debido a la severidad y el compromiso de áreas resultantes de ese tipo de eventos, se diseñó e implemento un protocolo de atención que se propuso realizar lo siguiente: 1) Aplicar la evaluación primaria y secundaria del paciente, según los lineamientos del Soporte Vital Avanzado en Trauma del Colegio Americano de Cirujanos. 2) Hacer la evaluación sistemática por áreas anatómicas por parte del departamento quirúrgico, orientándola hacia el examen de las lesiones descritas con mayor frecuencia. 3) Llevar a cabo posteriormente una valoración de las lesiones específicas de acuerdo con las especialidades relacionadas. Para identificar las lesiones más frecuentes, se realizó un análisis retrospectivo de los casos registrados en el Hospital Universitario de Neiva, centro de referencia para el suroccidente de Colombia. Resultados: Durante ese periodo, se atendieron 35 pacientes cuyas áreas anatómicas comprometidas más frecuentes fueron las extremidades inferiores (con un registro del 60% de los casos), el abdomen (54,3%) y el tórax (42,9%). La mortalidad general del grupo fue de 9,1%. Después de la implementación, se demostró una mejoría en la oportunidad de evaluación por cirugía general y se identificaron 6 pacientes con diagnósticos tardíos, previos a la implementación del protocolo. Conclusión: Este estudio determinó que la implementación de una revisión secuencial y un protocolo sistemático permiten mejorar la tasa de diagnósticos tardíos optimizando la evaluación diagnostica y el abordaje terapéutico

Red distribución, Supply Chain Management en la empresa Acerías Paz del río

El presente proyecto se centra en el análisis del proceso de Supply Chain y de la importancia que tiene la logística en los negocios, pues parece evidente que hoy vivimos dentro de un sistema de negocios globalmente integrado. La administración de cadenas de suministro (Supply Chain) es el proceso de planificación, puesto en ejecución y control de las operaciones de la red de suministro con el propósito de satisfacer las necesidades del cliente con tanta eficacia como sea posibleThe present project focuses on the analysis of the Supply Chain process and the importance of logistics in business, as it seems evident that today we live within a globally integrated business system. The supply chain management is the process of planning, implementing and controlling the operations of the supply network in order to meet the needs of the client as effectively as possibl

Baboo

Baboo, es una innovadora marca cuyo propósito es facilitar el acceso a la moda de alta gama para bebés y acompañar a las mamás en su maternidad. Este proyecto nace de un análisis de las necesidades del mercado, respaldado por un estudio de tendencias y la identificación de la demanda en el mercado. Este trabajo se centra en construir una estrategia digital integral, fusionando análisis de competencia, industria, comunidad y tendencias de mercado, con el objetivo de posicionar y dar a conocer la marca en el vasto panorama digital, ofreciendo así una propuesta estratégica que refleje la esencia única de Baboo.Baboo is an innovative brand whose purpose is to facilitate access to high-end fashion for babies and to accompany moms in their motherhood. This project was born from an analysis of market needs, supported by a study of trends and the identification of market demand. This work is focused on building a comprehensive digital strategy, merging analysis of competition, industry, community, and market trends, with the aim of positioning and raising awareness of the brand in the vast digital landscape, thus offering a strategic proposal that reflects the unique essence of Baboo

Soil Chemical Insights Provided through Vibrational Spectroscopy

Vibrational spectroscopy techniques provide a powerful approach to the study of environmental materials and processes. These multifunctional analytical tools can be used to probe molecular vibrations of solid, liquid, and gaseous samples for characterizing materials, elucidating reaction mechanisms, and examining kinetic processes. Although Fourier transform infrared (FTIR) spectroscopy is the most prominent type of vibrational spectroscopy used in the field of soil science, applications of Raman spectroscopy to study environmental samples continue to increase. The ability of FTIR and Raman spectroscopies to provide complementary information for organic and inorganic materials makes them ideal approaches for soil science research. In addition, the ability to conduct in situ, real time, vibrational spectroscopy experiments to probe biogeochemical processes at mineral interfaces offers unique and versatile methodologies for revealing a myriad of soil chemical phenomena. This review provides a comprehensive overview of vibrational spectroscopy techniques and highlights many of the applications of their use in soil chemistry research