32 research outputs found

    The CARMENES search for exoplanets around M dwarfs HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf

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    We report on the first star discovered to host a planet detected by radial velocity (RV) observations obtained within the CARMENES survey for exoplanets around M dwarfs. HD 147379 (V = 8.9 mag, M = 0.58 ± 0.08 M⊙), a bright M0.0 V star at a distance of 10.7 pc, is found to undergo periodic RV variations with a semi-amplitude of K = 5.1 ± 0.4 m s−1 and a period of P = 86.54 ± 0.06 d. The RV signal is found in our CARMENES data, which were taken between 2016 and 2017, and is supported by HIRES/Keck observations that were obtained since 2000. The RV variations are interpreted as resulting from a planet of minimum mass mP sin i = 25 ± 2 M⊕, 1.5 times the mass of Neptune, with an orbital semi-major axis a = 0.32 au and low eccentricity (e < 0.13). HD 147379 b is orbiting inside the temperate zone around the star, where water could exist in liquid form. The RV time-series and various spectroscopic indicators show additional hints of variations at an approximate period of 21.1 d (and its first harmonic), which we attribute to the rotation period of the star.FEDER/ERF FICTS-2011-02 fundsMajor Research Instrumentation Programme and DFG Research Unit FOR2544 “Blue Planets around Red StarsEuropean Research Council (ERC-279347), Deutsche Forschungsgemeinschaft (RE 1664/12-1, RE 2694/4-1), Bundesministerium für Bildung und Forschung (BMBF-05A14MG3, BMBF-05A17MG3), Spanish Ministry of Economy and Competitiveness (MINECO, grants AYA2015-68012-C2-2-P, AYA2016-79425-C3-1,2,3-P, AYA2015-69350-C3-2-P, AYA2014-54348-C03- 01, AYA2014-56359-P, AYA2014-54348-C3-2-R, AYA2016-79425-C3-3-P and 2013 Ramòn y Cajal program RYC-2013-14875), Fondo Europeo de Desarrollo Regional (FEDER, grant ESP2016-80435-C2-1-R, ESP2015-65712-C5- 5-R), Generalitat de Catalunya/CERCA programme, Spanish Ministerio de Educación, Cultura y Deporte, programa de Formación de Profesorado Universitario (grant FPU15/01476), Deutsches Zentrum für Luft- und Raumfahrt (grants 50OW0204 and 50OO1501), Office of Naval Research Global (award no. N62909-15-1-2011), Mexican CONACyT grant CB-2012-183007

    Detailed stellar activity analysis and modelling of GJ 832

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    Context. Gliese-832 (GJ 832) is an M2V star hosting a massive planet on a decade-long orbit, GJ 832b, discovered by radial velocity (RV). Later, a super Earth or mini-Neptune orbiting within the stellar habitable zone was reported (GJ 832c). The recently determined stellar rotation period (45.7 ± 9.3 days) is close to the orbital period of putative planet c (35.68 ± 0.03 days). Aims. We aim to confirm or dismiss the planetary nature of the RV signature attributed to GJ 832c, by adding 119 new RV data points, new photometric data, and an analysis of the spectroscopic stellar activity indicators. Additionally, we update the orbital parameters of the planetary system and search for additional signals. Methods. We performed a frequency content analysis of the RVs to search for periodic and stable signals. Radial velocity time series were modelled with Keplerians and Gaussian process (GP) regressions alongside activity indicators to subsequently compare them within a Bayesian framework. Results. We updated the stellar rotational period of GJ 832 from activity indicators, obtaining 37.5+1.4-1.5 days, improving the precision by a factor of 6. The new photometric data are in agreement with this value. We detected an RV signal near 18 days (FAP < 4.6%), which is half of the stellar rotation period. Two Keplerians alone fail at modelling GJ 832b and a second planet with a 35-day orbital period. Moreover, the Bayesian evidence from the GP analysis of the RV data with simultaneous activity indices prefers a model without a second Keplerian, therefore negating the existence of planet c

    International lower limb collaborative (INTELLECT) study: a multicentre, international retrospective audit of lower extremity open fractures

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    Trauma remains a major cause of mortality and disability across the world1, with a higher burden in developing nations2. Open lower extremity injuries are devastating events from a physical3, mental health4, and socioeconomic5 standpoint. The potential sequelae, including risk of chronic infection and amputation, can lead to delayed recovery and major disability6. This international study aimed to describe global disparities, timely intervention, guideline-directed care, and economic aspects of open lower limb injuries

    International Lower Limb Collaborative (INTELLECT) study : a multicentre, international retrospective audit of lower extremity open fractures

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    Risk profiles and one-year outcomes of patients with newly diagnosed atrial fibrillation in India: Insights from the GARFIELD-AF Registry.

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    BACKGROUND: The Global Anticoagulant Registry in the FIELD-Atrial Fibrillation (GARFIELD-AF) is an ongoing prospective noninterventional registry, which is providing important information on the baseline characteristics, treatment patterns, and 1-year outcomes in patients with newly diagnosed non-valvular atrial fibrillation (NVAF). This report describes data from Indian patients recruited in this registry. METHODS AND RESULTS: A total of 52,014 patients with newly diagnosed AF were enrolled globally; of these, 1388 patients were recruited from 26 sites within India (2012-2016). In India, the mean age was 65.8 years at diagnosis of NVAF. Hypertension was the most prevalent risk factor for AF, present in 68.5% of patients from India and in 76.3% of patients globally (P < 0.001). Diabetes and coronary artery disease (CAD) were prevalent in 36.2% and 28.1% of patients as compared with global prevalence of 22.2% and 21.6%, respectively (P < 0.001 for both). Antiplatelet therapy was the most common antithrombotic treatment in India. With increasing stroke risk, however, patients were more likely to receive oral anticoagulant therapy [mainly vitamin K antagonist (VKA)], but average international normalized ratio (INR) was lower among Indian patients [median INR value 1.6 (interquartile range {IQR}: 1.3-2.3) versus 2.3 (IQR 1.8-2.8) (P < 0.001)]. Compared with other countries, patients from India had markedly higher rates of all-cause mortality [7.68 per 100 person-years (95% confidence interval 6.32-9.35) vs 4.34 (4.16-4.53), P < 0.0001], while rates of stroke/systemic embolism and major bleeding were lower after 1 year of follow-up. CONCLUSION: Compared to previously published registries from India, the GARFIELD-AF registry describes clinical profiles and outcomes in Indian patients with AF of a different etiology. The registry data show that compared to the rest of the world, Indian AF patients are younger in age and have more diabetes and CAD. Patients with a higher stroke risk are more likely to receive anticoagulation therapy with VKA but are underdosed compared with the global average in the GARFIELD-AF. CLINICAL TRIAL REGISTRATION-URL: http://www.clinicaltrials.gov. Unique identifier: NCT01090362

    Anales de Edafología y Agrobiología Tomo 41 Número 1-2

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    Suelos. Mineralización del carbono y del nitrógeno en suelos forestales de Galicia, por R. M. de Anta y F. Díaz-Fierros.-- Características bioclimáticas de interés edafológico de las Sierras de Orce y María, por L J. Alias y J. Martínez Sánchez.-- Factores formadores de los suelos de la cuenca del río Dilar (Sierra Nevada), por R. Delgado Calvo-Flores, E. Barahona y J. Linares.-- Distribución de los suelos de la cuenca alta del río Dilar (Sierra Nevada), por R. Delgado Calvo-Flores, E. Barahona y J. Linares.-- Los mollisoles de la cuenca alta del río Dilar (Sierra Nevada), por R. Delgado Calvo-Flores, E. Barahona, F. Huertas y J. Linares.-- Los inceptisoles de la cuenca alta del río Dilar (Sierra Nevada), por R. Delgado CalvoFlores, E. Barahona, F. Huertas y J. Linares.-- Los entisoles de la cuenca alta del río Dilar (Sierra Nevada), por R. Delgado Calvo-Flores, E. Barahona, F. Huertas y J. Linares.-- Aspectos edafogeoquímicos de la salinidad en la submeseta Sur (Toledo). l. Estudio hidrogeoquímico, por J. Gumuzzio Fernández, J. Astudillo Pastor y J. Batlle Sales.-- Modelo experimental de alteración de oligisto. Aplicación al estudio óptico de minerales opacos, por Hoyos de Castro, A., Remando Costa, J., Remando Massanet, l. y Millán Pérez, R.-- Modelo experimental de alteración de feldespatos. Aplicación de tinción. l. Ortosa. por Hoyos de Castro, A., Hernando Massanet, l. Remando Costa, J. y Yunta, M. V..-- Modelo experimental de alteración de feldespatos. Aplicación al método de tinción. II Labradorita, por Hoyos de Castro, A. Hernando Massanet, I., Hernando Costa, J. y Pisonero Ruiz, L.-- Taxonomía númerica. Su aplicación a la clasificación de los suelos rojos españoles, por L. Alcalá del Olmo, B. y F. Monturiol Rodríguez.-- Propiedades químicas de suelos y niveles de nutrientes inorgánicos en aciculas de A. Pinsapo de Grazalema (Cádiz España), por Paneque, G. y Corral, L.-- Morfología y propiedades químicas de suelos forestales de Granlema (Cádi7., España). l. Suelos bajo Quercus rotundifoliae y Quercus fagineae, por, C. Benírez, J. Mérida, L. Corral y G. Paneque.-- Morfología y propiedades químicas de suelos forestales de Grazalema (Cádiz, España). II. Suelos bajos Quercus suber y A bies pinsapo, por C. Benírez, J. Mérida, L. Corral y G. Paneque.-- Morfología y propiedades químicas de suelos forestales de Grazalema (Cádiz,España). III. Tipovergencia del perfil húmico, por J. Mérida, L. Corral y G. Paneque.-- Fertilidad de Suelos. Q/1 ratio saline soils belongig to Ebro Valley (Spain), por Benigna Elizalde and M. Fernández.-- Fertilidad química de los suelos del valle del río Guadalhorce (Málaga), por S. Bruque, M. Martínez Lara y L. Moreno Real.-- Absorción de K por ryegrass y Trifolium en suelos deficientes, por J. A. Diez.— Nutrición y Fisiología Vegetal. Correlaciones entre bioelementos: Estudio realizado en Trifo/ium subrerraneo L. y A vena saliva L., por Gómez Gutiérrez, J. M. y Hoyos Alonso, C. de.-- Influencia del ácido húmico sobre la nutrición mineral y el desarrollo radicular de plantas de maíz cultivadas en soluciones nutritivas normales y carentes de Fe y Mn, por Fortún, C. y López-Fando, C.-- Notas.-- BibliografíaPeer reviewe
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