#Gayspain: homonormativización y transnacionalidad en Instagram

El objetivo de este estudio es examinar el uso (eventual o continuado) que la comunidad gay extranjera residente en España hace de la red social Instagram. Concretamente, se indaga en la noción de transnacionalidad, a la que aluden las interacciones en diferentes niveles que se producen entre origen nacional o étnico y país de acogida, y que constituyen una particular dinámica en relación con la identidad gay. Para este fin, se estudia una serie de publicaciones realizadas entre enero y junio de 2017 bajo las etiquetas #gaymadrid, #gaybarcelona, #gaybcn y #gayvalencia. De este análisis se desprende que existe un grupo minoritario de usuarios que utiliza Instagram como un medio de empoderamiento para afirmar su identidad sexual e integrarse en una comunidad gay global. Por otro lado, un conjunto mayoritario de perfiles emplea marcas nacionales o étnicas como atributos exóticos de un cuerpo gay homonormativo, convenientemente fetichizado y mercantilizado. Tanto es así que algunos usuarios publican fotos de sus cuerpos semidesnudos ocultando el lugar donde han sido tomadas, borrando cualquier coordenada espacial que pueda sugerir el arraigo de tales cuerpos a un sitio concreto

Inspire: Challenging the lack of interest in physics among students

The Inspire project tested and analyzed the use of digital Learning resources (LR) in the field of Maths, Science and Technology (MST) in 63 schools in Austria, Germany, Italy, Lithuania and Spain. MST teachers used the LR from a pool of 60 resources (12 for Physics) in class and the effects on teachers and 5–18+ year old students were measured. We found the use of LR increases the understanding of students of MST and allows for differentiated learning within a class. LR have a larger impact on boys than girls, and it decreases with age. Overall, it appears the use of LR has a positive impact on MST education but special attention has to be placed on technical requirements and localization of the LR

Optical spectroscopy of EX Lupi during quiescence and outburst: Infall, wind, and dynamics in the accretion flow

We explore the accretion mechanisms in EX Lupi, prototype of EXor variables, during its quiescence and outburst phases. We analyse high-resolution optical spectra taken before, during, and after its 2008 outburst. In quiescence and outburst, the star presents many permitted emission lines, including typical CTTS lines and numerous neutral and ionized metallic lines. During the outburst, the number of emission lines increases to over a thousand, with narrow plus broad component structure (NC+BC). The BC profile is highly variable on short timescales (24-72h). An active chromosphere can explain the metallic lines in quiescence and the outburst NC. The dynamics of the BC line profiles suggest an origin in a hot, dense, non-axisymmetric, and non-uniform accretion column that suffers velocity variations along the line-of-sight on timescales of days. Assuming Keplerian rotation, the emitting region would be located at ~0.1-0.2 AU, consistent with the inner disk rim, but the velocity profiles of the lines reveal a combination of rotation and infall. Line ratios of ions and neutrals can be reproduced with a temperature of T~6500 K for electron densities of a few times 10$^{12}$cm$^{-3}$ in the line-emitting region. The data confirm that the 2008 outburst was an episode of increased accretion, albeit much stronger than previous EX Lupi and typical EXors outbursts. The line profiles are consistent with the infall/rotation of a non-axisymmetric structure that could be produced by clumpy accretion during the outburst phase. A strong inner disk wind appears in the epochs of higher accretion. The rapid recovery of the system after the outburst and the similarity between the pre-outburst and post-outburst states suggest that the accretion channels are similar during the whole period, and only the accretion rate varies, providing a superb environment for studying the accretion processes.Comment: 15 pages plus 26 pages online material, accepted by A&

EX Lupi in quiescence

EX Lup is the prototype of EXors, a subclass of low-mass pre-main sequence stars whose episodic eruptions are attributed to temporarily increased accretion. In quiescence the optical and near-infrared properties of EX Lup cannot be distinguished from those of normal T Tau stars. Here we investigate whether it is the circumstellar disk structure which makes EX Lup an atypical Class II object. During outburst the disk might undergo structural changes. Our characterization of the quiescent disk is intended to serve as a reference to study the physical changes related to one of EX Lupi's strongest known eruptions in 2008 Jan-Sep. We searched the literature for photometric and spectroscopic observations including ground-based, IRAS, ISO and Spitzer data. After constructing the optical-infrared spectral energy distribution (SED), we compared it with the typical SEDs of other young stellar objects and modeled it using the Monte Carlo radiative transfer code RADMC. A mineralogical decomposition of the 10 micron silicate emission feature and also the description of the optical and near-infrared spectra were performed. The SED is in general similar to that of a typical T Tauri star, though above 7 micron EX Lup emits higher flux. The quiescent phase data suggest low level variability in the optical-mid-infrared domain. Integrating the optical and infrared fluxes we derived a bolometric luminosity of 0.7 L_Sun. The 10 micron silicate profile could be fitted by a mixture consisting of amorphous silicates, no crystalline silicates were found. A modestly flaring disk model with a total mass of 0.025 M_Sun and an outer radius of 150 AU was able to reproduce the observed SED. The derived inner radius of 0.2 AU is larger than the sublimation radius, and this inner gap sets EX Lup aside from typical T Tauri stars.Comment: Accepted for publication in Astronomy and Astrophysics, 10 pages, 6 figure

Star formation in bright-rimmed clouds and cluster associated with W5 E H{\sc ii} region

The aim of this paper is to present the results of photometric investigations of the central cluster of the W5 E region as well as a follow-up study of the triggered star formation in and around bright-rimmed clouds (BRCs). We have carried out wide field $UBVI_c$ and deep $VI_c$ photometry of the W5 E H{\sc ii} region. A distance of $\sim$2.1 kpc and a mean age of $\sim$1.3 Myr have been obtained for the central cluster. The young stellar objects (YSOs) associated with the region are identified on the basis of near-infrared and mid-infrared observations. We confirmed our earlier results that the average age of the YSOs lying on/inside the rim are younger than those lying outside the rim. The global distribution of the YSOs shows an aligned distribution from the ionising source to the BRCs. These facts indicate that a series of radiation driven implosion processes proceeded from near the central ionising source towards the periphery of the W5 E H{\sc ii} region. We found that, in general, the age distributions of the Class II and Class III sources are the same. This result is apparently in contradiction with the conclusion by Bertout, Siess & Cabrit (2007) and Chauhan et al. (2009) that classical T Tauri stars evolve to weak-line T Tauri stars. The initial mass function of the central cluster region in the mass range $0.4 \le M/M_\odot \le 30$ can be represented by $\Gamma = -1.29 \pm 0.03$. The cumulative mass functions indicate that in the mass range $0.2 \le M/M_\odot \le 0.8$, the cluster region and BRC NW have more low mass YSOs in comparison to BRCs 13 and 14.Comment: 43 pages, 17 figures, accepted for publication in MNRA

Calcium and temperature effect on structural damage of hot air dried apple slices: Nonlinear irreversible thermodynamic approach and rehydration analysis

Mathematical models traditionally employed in fitting convective drying data do not use to report information about chemical and other physical changes different from the simple decrease in moisture content. In the present study, structural damage undergone by fresh and vacuum impregnated apple slices with different calcium lactate concentrations during convective drying at 30, 40 and 50 °C was analysed by applying equations derived from nonlinear irreversible thermodynamics to experimental data. According to the results obtained, vacuum impregnation with isotonic sucrose solution before drying at 30 °C provided maximum protection to cellular structure by promoting reversible deformations against irreversible breakages. On the contrary, cell walls strengthen with calcium had severe damaged during drying. Regarding air temperature, it was directly related both to the molar energy employed in deforming structures and the drying rate. These results were confirmed by analysing dried samples behaviour during further rehydration.Barrera Puigdollers, C.; Betoret Valls, N.; Betoret Valls, ME.; Fito Maupoey, P. (2016). Calcium and temperature effect on structural damage of hot air dried apple slices: Nonlinear irreversible thermodynamic approach and rehydration analysis. Journal of Food Engineering. 189:106-114. doi:10.1016/j.jfoodeng.2016.05.024S10611418

Refugios climáticos escolares basados en la naturaleza : evaluación desde una perspectiva interdisciplinaria

Este trabajo se basa en el proyecto Coolschools (coolschools.eu) y ha recibido financiación del programa de investigación e innovación Horizon 2020 de la Unión Europea bajo el acuerdo de subvención núm. 101003758, así como de la Agencia Española de Investigación (AEI), Innoviris (Región de Bruselas Capital), Dutch Research Council (NWO), The Research Foundation - Flanders (FWO) y Agence Nationale de la Recherche (ANR).Las soluciones basadas en la naturaleza (SbN) se definen como acciones que se apoyan en lanaturaleza para proporcionar simultáneamente beneficios ambientales y socioeconómicos de forma sostenible y resiliente. Cuando se incorporan en entornos escolares, tanto dentro de los recintos escolares como en sus alrededores, las SbN pueden contribuir a la adaptación al cambio climático a la vez que proporcionar múltiples cobeneficios a la comunidad educativa. Este artículo aporta evidencias científicas y herramientas metodológicas para una evaluación holística de los cobeneficios de las SbN en entornos escolares en términos de equidad, biodiversidad, salud, seguridad, gobernanza y educación, con una mirada hacia la población infantil como beneficiaria principal. Para ello, propone y desarrolla el concepto de refugios climáticos escolares basados en la naturaleza como una estrategia innovadora para la transición hacia ciudades más sostenibles y resilientes

Mujeres y cambios de paradigmas cientifícos en medicina

Dins la física es va produir una revolució quan es va passar d’una visió newtoniana dels fenòmens naturals a una de quàntica. Igualment, s’està produint una evolució en la medicina des de la visió tradicional, on el cos es considera una màquina sotmesa a forces externes (món clàssic), a una visió on l’Univers es troba radicalment entrellaçat (món quàntic). Analitzem ací com els nous conceptes físics estan contribuint al canvi de paradigmes mèdics, especialment en les anomenades Medicines Alternatives i Complementàries. Mostrem com aquesta evolució es veu impulsada per l’increment de la participació de les dones en la medicina, amb una actitud més participativa i menys autoritària, i nous models d’activitat i de relació terapèutica. Acabem comentant àrees de recerca possibles en l’àmbit de les qüestions de gènere en les medicines i la importància de fer una medicina de gènere.A revolution took place in Physics when the Newtonian view of the world changed to a Quantum view. The same is occurring in Medicine with the evolution from the traditional view, with the body considered a machine under the influence of external forces (Classic world), to a view where the Universe finds itself radically intertwined (Quantum world). In the article we analyse how the new Physics concepts are contributing to changes in Medicine, specially in the so-called Complementary and Alternative Medicines. We show how this evolution is pushed forward by the increase in the participation of women in Medicine, thanks to their more participative and less authoritative attitude, and new models of activity and of therapeutic relationships. Finally we talk about possible research areas in the field of gender questions in the medicines and the importance of developing a gender-based Medicine

Weak-line T Tauri stars: circumstellar disks and companions

We have analysed new infrared photometric data taken by the Infrared Space Observatory, in combination with 2MASS data where available, of 12 weak-line T Tauri stars (WTTS), belonging to different molecular clouds. A control study of 6 classical T Tauri stars (CTTS) for comparison with IRAS data has also been made. WTTS traditionally are not expected to have any circumstellar material, but we have found that 11 of the WTTS studied, have a spectral energy distribution that suggests the presence of reprocessing circumstellar disks, albeit half of them with apparent inner “dust holes”. The spectral energy distribution curves of all the stars in our sample show infrared excess in all cases except one. We have also searched for companions to these stars and studied their possible contributions to the infrared emission. We find that 10 of the WTTS with excess infrared emission have companions that may contribute measurably and, in some cases significantly, at infrared wavelengths. In the case of the binary systems, the amount of excess due to the companion is still unclear but it is unlikely they are the only source of all the observed excess.
We give estimations of the excesses and masses of the stars and also find their ages and radii to be in agreement with those expected for T Tauri stars. Our results suggest there is a continuum in infrared excess properties from CTTS to WTTS rather than a clear differentiation based on a somewhat arbitrary EW(Hα) criterion.