86 research outputs found

    Do armário para vitrine: Visibilizando e acolhendo a diversidade sexual no ambiente universitário

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    Research for documentary and explanation, within a qualitative approach, aimed to identify and analyze the actions of five years for the anniversary of Sexual Gender Diversity and Enforcement Organization Against Violence (CDGEN). The data collected on the institutional website, social networks, CDGEN bank statements, virtual lesson graduations acquaintanced to the historical memory of the authors' experience in the Coordination and Management analysing the assets ending up on four categories: Visibility; actions in making institutional policies. The analysis of datas showed that although there is still prejudice, discrimination and violence against people sex-gender-dissidents in the academy, the actions developed, by placing evasion to cisheteronomy, adverse where the sexual and gender identity of people is not a justification for assaulting them, where each person can be whatever he or she wants them to be.Pesquisa exploratória e documental, com abordagem qualitativa, que teve por objetivos identificar e analisar as ações desenvolvidas nos cinco anos de existência da Coordenadoria de Diversidade Sexual e Enfrentamento da Violência de Gênero (CDGEN), da Universidade Federal de Santa Catarina. Os dados coletados no site institucional, redes sociais, banco de informações da CDGEN, ambiente virtual de ensino aprendizagem dos cursos de formação oferecidos, somados à memória histórica da vivência dos autores na gestão da Coordenadoria foram tratados com a Análise de Conteúdo, dando origem a quatro categorias: Ações de acolhimento e cuidado; Ações de visibilidade; Ações de formação/capacitação e Ações de Participação na construção de políticas institucionais. A análise dos dados demonstrou que apesar de ainda existir preconceito, discriminação e violências contra as pessoas sexo-gênero-dissidentes na academia, as ações desenvolvidas, ao colocarem em questionamento a cisheteronorma, naturalizada como universal, abalaram sua estrutura, aumentando as práticas inclusivas e não discriminatórias, contribuindo para construção de uma universidade onde a identidade sexual e de gênero das pessoas não seja uma justificativa para violentá-las, onde cada pessoa possa ser o que ela desejar, sem necessidade de se esconder em um armário

    Elemental Abundances of Kepler Objects of Interest in APOGEE. I. Two Distinct Orbital Period Regimes Inferred from Host Star Iron Abundances

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    The Apache Point Observatory Galactic Evolution Experiment (APOGEE) has observed \sim600 transiting exoplanets and exoplanet candidates from \textit{Kepler} (Kepler Objects of Interest, KOIs), most with \geq18 epochs. The combined multi-epoch spectra are of high signal-to-noise (typically \geq100) and yield precise stellar parameters and chemical abundances. We first confirm the ability of the APOGEE abundance pipeline, ASPCAP, to derive reliable [Fe/H] and effective temperatures for FGK dwarf stars -- the primary \textit{Kepler} host stellar type -- by comparing the ASPCAP-derived stellar parameters to those from independent high-resolution spectroscopic characterizations for 221 dwarf stars in the literature. With a sample of 282 close-in (P<100P<100 days) KOIs observed in the APOGEE KOI goal program, we find a correlation between orbital period and host star [Fe/H] characterized by a critical period, PcritP_\mathrm{crit}= 8.34.1+0.18.3^{+0.1}_{-4.1} days, below which small exoplanets orbit statistically more metal-enriched host stars. This effect may trace a metallicity dependence of the protoplanetary disk inner-radius at the time of planet formation or may be a result of rocky planet ingestion driven by inward planetary migration. We also consider that this may trace a metallicity dependence of the dust sublimation radius, but find no statistically significant correlation with host TeffT_\mathrm{eff} and orbital period to support such a claim.Comment: 18 Pages, Accepted to A

    Breastfeeding consultancy at Hospital de Clínicas de Porto Alegre, Brazil

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    Apesar de todos os benefícios amplamente reconhecidos, o aleitamento materno deixou de ser uma prática universal. Podemos observar as conseqüências dessa mudança de comportamento ao longo do tempo, como o aumento da morbimortalidade infantil. Diariamente, no contato com as mães, percebemos o quanto a amamentação em determinadas condições pode parecer compli-cada, mesmo que a mulher esteja decidida a amamentar. No Hospital de Clínicas de Porto Alegre, desde 1996, contamos com um grupo de consultoras em lactação, formado por duas enfermeiras e uma nutricionista. Neste trabalho, desejamos compartilhar a experiência adquirida em 7 anos de trabalho junto a mães e bebês, atuando como faci-litadoras do processo de amamentação.Despite all its widely reported benefits, breastfeeding is no longer a universal practice. The consequences of this change in behavior throughout time are evident, such as increased infant morbidity and mortality rates. In our daily contact with mothers, we have realized how much breastfeeding may seem complicated under certain conditions, even when women have decided to breastfeed their babies. In 1996, Hospital de Clínicas de Porto Alegre formed a group of lactation consultants, composed of two nurses and one nutritionist. In this paper, we share the experience acquired in 7 years of work with mothers and babies, acting as facilitators in the breastfeeding process

    Chemical abundance gradients from open clusters in the Milky Way disk: results from the APOGEE survey

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    Metallicity gradients provide strong constraints for understanding the chemical evolution of the Galaxy. We report on radial abundance gradients of Fe, Ni, Ca, Si, and Mg obtained from a sample of 304 red-giant members of 29 disk open clusters, mostly concentrated at galactocentric distances between ~8 - 15 kpc, but including two open clusters in the outer disk. The observations are from the APOGEE survey. The chemical abundances were derived automatically by the ASPCAP pipeline and these are part of the SDSS III Data Release 12. The gradients, obtained from least squares fits to the data, are relatively flat, with slopes ranging from -0.026 to -0.033 dex/kpc for the alpha-elements [O/H], [Ca/H], [Si/H] and [Mg/H] and -0.035 dex/kpc and -0.040 dex/kpc for [Fe/H] and [Ni/H], respectively. Our results are not at odds with the possibility that metallicity ([Fe/H]) gradients are steeper in the inner disk (R_GC ~7 - 12 kpc) and flatter towards the outer disk. The open cluster sample studied spans a significant range in age. When breaking the sample into age bins, there is some indication that the younger open cluster population in our sample (log age < 8.7) has a flatter metallicity gradient when compared with the gradients obtained from older open clusters.Comment: 4 pages, 3 figures, To appear in Astronomische Nachrichten, special issue "Reconstruction the Milky Way's History: Spectroscopic surveys, Asteroseismology and Chemo-dynamical models", Guest Editors C. Chiappini, J. Montalb\'an, and M. Steffen, AN 2016 (in press)

    Stellar and Planetary Characterization of the Ross 128 Exoplanetary System from APOGEE Spectra

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    The first detailed chemical abundance analysis of the M dwarf (M4.0) exoplanet-hosting star Ross 128 is presented here, based upon near-infrared (1.5--1.7 \micron) high-resolution (RR\sim22,500) spectra from the SDSS-APOGEE survey. We determined precise atmospheric parameters TeffT_{\rm eff}=3231±\pm100K, loggg=4.96±\pm0.11 dex and chemical abundances of eight elements (C, O, Mg, Al, K, Ca, Ti, and Fe), finding Ross 128 to have near solar metallicity ([Fe/H] = +0.03±\pm0.09 dex). The derived results were obtained via spectral synthesis (1-D LTE) adopting both MARCS and PHOENIX model atmospheres; stellar parameters and chemical abundances derived from the different adopted models do not show significant offsets. Mass-radius modeling of Ross 128b indicate that it lies below the pure rock composition curve, suggesting that it contains a mixture of rock and iron, with the relative amounts of each set by the ratio of Fe/Mg. If Ross 128b formed with a sub-solar Si/Mg ratio, and assuming the planet's composition matches that of the host-star, it likely has a larger core size relative to the Earth. The derived planetary parameters -- insolation flux (SEarth_{\rm Earth}=1.79±\pm0.26) and equilibrium temperature (TeqT_{\rm eq}=294±\pm10K) -- support previous findings that Ross 128b is a temperate exoplanet in the inner edge of the habitable zone.Comment: Accepted in ApJLetters, 3 figures, 2 tables, 12 page

    APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South

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    The spectral analysis and data products in Data Release 16 (DR16; December 2019) from the high-resolution near-infrared APOGEE-2/SDSS-IV survey are described. Compared to the previous APOGEE data release (DR14; July 2017), APOGEE DR16 includes about 200000 new stellar spectra, of which 100000 are from a new southern APOGEE instrument mounted on the 2.5 m du Pont telescope at Las Campanas Observatory in Chile. DR16 includes all data taken up to August 2018, including data released in previous data releases. All of the data have been re-reduced and re-analyzed using the latest pipelines, resulting in a total of 473307 spectra of 437445 stars. Changes to the analysis methods for this release include, but are not limited to, the use of MARCS model atmospheres for calculation of the entire main grid of synthetic spectra used in the analysis, a new method for filling "holes" in the grids due to unconverged model atmospheres, and a new scheme for continuum normalization. Abundances of the neutron capture element Ce are included for the first time. A new scheme for estimating uncertainties of the derived quantities using stars with multiple observations has been applied, and calibrated values of surface gravities for dwarf stars are now supplied. Compared to DR14, the radial velocities derived for this release more closely match those in the Gaia DR2 data base, and a clear improvement in the spectral analysis of the coolest giants can be seen. The reduced spectra as well as the result of the analysis can be downloaded using links provided in the SDSS DR16 web page

    Two groups of red giants with distinct chemical abundances in the bulge globular cluster NGC 6553 through the eyes of APOGEE

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    Multiple populations revealed in globular clusters (GCs) are important windows to the formation and evolution of these stellar systems. The metal-rich GCs in the Galactic bulge are an indispensable part of this picture, but the high optical extinction in this region has prevented extensive research. In this work, we use the high-resolution near-infrared (NIR) spectroscopic data from Apache Point Observatory Galactic Evolution Experiment (APOGEE) to study the chemical abundances of NGC 6553, which is one of the most metal-rich bulge GCs. We identify 10 red giants as cluster members using their positions, radial velocities, iron abundances, and NIR photometry. Our sample stars show a mean radial velocity of −0.14 ± 5.47 km s−1, and a mean [Fe/H] of −0.15 ± 0.05. We clearly separate two populations of stars in C and N in this GC for the first time. NGC 6553 is the most metal-rich GC where the multiple stellar population phenomenon is found until now. Substantial chemical variations are also found in Na, O, and Al. However, the two populations show similar Si, Ca, and iron-peak element abundances. Therefore, we infer that the CNO, NeNa, and MgAl cycles have been activated, but the MgAl cycle is too weak to show its effect on Mg. Type Ia and Type II supernovae do not seem to have significantly polluted the second generation stars. Comparing with other GC studies, NGC 6553 shows similar chemical variations as other relatively metal-rich GCs. We also confront current GC formation theories with our results, and suggest possible avenues for improvement in the models

    Long COVID in hospitalized and non-hospitalized patients in a large cohort in Northwest Spain, a prospective cohort study

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    Survivors to COVID-19 have described long-term symptoms after acute disease. These signs constitute a heterogeneous group named long COVID or persistent COVID. The aim of this study is to describe persisting symptoms 6 months after COVID-19 diagnosis in a prospective cohort in the Northwest Spain. This is a prospective cohort study performed in the COHVID-GS. This cohort includes patients in clinical follow-up in a health area of 569,534 inhabitants after SARS-CoV-2/COVID-19 diagnosis. Clinical and epidemiological characteristics were collected during the follow up. A total of 248 patients completed 6 months follow-up, 176 (69.4%) required hospitalization and 29 (10.2%) of them needed critical care. At 6 months, 119 (48.0%) patients described one or more persisting symptoms. The most prevalent were: extra-thoracic symptoms (39.1%), chest symptoms (27%), dyspnoea (20.6%), and fatigue (16.1%). These symptoms were more common in hospitalized patients (52.3% vs. 38.2%) and in women (59.0% vs. 40.5%). The multivariate analysis identified COPD, women gender and tobacco consumption as risk factors for long COVID. Persisting symptoms are common after COVID-19 especially in hospitalized patients compared to outpatients (52.3% vs. 38.2%). Based on these findings, special attention and clinical follow-up after acute SARS-CoV-2 infection should be provided for hospitalized patients with previous lung diseases, tobacco consumption, and women
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