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We determined the mineral-melt partition coefficients (Di's) and the compositional and/or temperature dependency between grossite, melilite, hibonite, olivine and Ca-, Al-inclusion (CAI)-type liquids for a number of light (LE), high field strength (HFSE), large ion lithophile (LILE), and rare earth (REE) elements including Li, Be, B, Sr, Zr, Nb, Ba, La, Ce, Eu, Dy, Ho, Yb, Hf, Ta, Th. A series of isothermal crystallization experiments was conducted at 5 kbar pressure and IW+1 in graphite capsules. The starting compositions were selected based on the calculated and experimentally confirmed phase relations during condensation in CI dust-enriched systems (Ebel and Grossman, 2000; Ebel, 2006; Ustunisik et al., 2014). Partition coefficients between melt and gehlenite, hibonite, and grossite show that the trace element budget of igneous CAIs is controlled by these three major Al-bearing phases in addition to pyroxene. In general, LE, LILE, REE, and HFSE partition coefficients (by mass) decrease in the order of Di(Gehlenite-Melt) > Di(Hibonite-Melt) > Di(Grossite-Melt). Results suggest that Di(Gehlenite-Melt) vary by a factor of 2-3 in different melt compositions at the same T (~1500 C). Increased melt Al and Ca, relative to earlier work, increases the compatibility of Di(Gehlenite-Melt), and also the compatibility of Di(Hibonite-Melt), especially for La and Ce. Olivine partitioning experiments confirm that olivine contribution to the trace element budget of CAIs is small due to the low Di(Olivine-Melt) at a range of temperatures while D-Eu, Yb(Olivine-Melt) are sensitive to changes in T and oxygen fugacity. The development of a predictive model for partitioning in CAI-type systems would require more experimental data and the use of analytical instruments capable of obtaining single phase analyses for crystals < 5 micron., 23 pages, 15 figures, 5 tables

We present results from an atmospheric retrieval analysis of Gl 229B using the BREWSTER retrieval code. We find the best fit model to be cloud-free, consistent with the T dwarf retrieval work of Line et al. 2017, Zalesky et al. 2022 and Gonzales et al. 2020. Fundamental parameters (mass, radius, log(L_{Bol}/L_{Sun}), log(g)) determined from our model agree within 1\sigma to SED-derived values except for T_{eff} where our retrieved T_{eff} is approximately 100 K cooler than the evolutionary model-based SED value. We find a retrieved mass of 50^{+12}_{-9} M_{Jup}, however, we also find that the observables of Gl 229B can be explained by a cloud-free model with a prior on mass at the dynamical value, 70 M_{Jup}. We are able to constrain abundances for H_2O, CO, CH_4, NH_3, Na and K and find a supersolar C/O ratio as compared to its primary, Gl 229A. We report an overall subsolar metallicity due to atmospheric oxygen depletion but find a solar [C/H], which matches that of the primary. We find that this work contributes to a growing trend in retrieval-based studies, particularly for brown dwarfs, toward supersolar C/O ratios and discuss the implications of this result on formation mechanisms, internal physical processes as well as model biases., Comment: 26 pages, 8 tables, 8 figures. Accepted for publication in ApJ

Introdução: Investigar os fatores associados à condição perineal no parto vaginal pode possibilitar modificações no cuidado com o períneo, de forma a contribuir para menores frequências de episiotomia e de lacerações perineais. Objetivos: Identificar os fatores associados à episiotomia; identificar os fatores associados à integridade perineal no parto vaginal; descrever os motivos apontados para a realização de episiotomia por enfermeiras obstétricas; e identificar as manobras de proteção perineal realizadas por enfermeiras obstétricas em um Centro de Parto Normal. Método: Estudo transversal com coleta de dados prospectiva por meio de formulário aplicado junto às enfermeiras obstétricas de um Centro de Parto Normal intra-hospitalar de São Paulo e que incluiu dados de todas as mulheres que deram à luz neste serviço no período de fevereiro de 2014 a janeiro de 2015. Na análise estatística, as associações entre as variáveis dependentes (episiotomia e integridade perineal) e as variáveis sociodemográficas, obstétricas e assistenciais foram estimadas por meio de Odds Ratios (OR), calculadas por meio de regressão logística binária univariada e múltipla com intervalos de confiança de 95 por cento (IC 95 por cento ), no programa estatístico SPSS versão 20. Foram realizadas análises separadas para cada variável dependente. Os motivos para a realização de episiotomia e o uso de manobras de proteção perineal foram descritos por meio de frequências e porcentagens. O estudo foi aprovado nos Comitês de Ética em Pesquisa das instituições proponente e coparticipante. Resultados: Foram analisados os dados de 802 mulheres (frequência de episiotomia de 23,8 por cento , 191 mulheres; integridade perineal de 25,9 por cento , 208 mulheres; laceração perineal de 50,3 por cento , 403 mulheres). Os fatores independentemente associados à episiotomia foram: não ter parto vaginal anterior (OR 26,72; IC 95 por cento 15,42-46,30), uso de ocitocina durante o trabalho de parto (OR 1,69; IC 95 por cento 1,12-2,57), puxos dirigidos (OR 2,05; IC 95 por cento 1,23-3,43), intercorrência no trabalho de parto (OR 2,61; IC 95 por cento 1,43-4,77) e posição semissentada no parto (5,45; IC 95 por cento 1,06-28,01). O uso de uma manobra de proteção perineal (OR 0,11; IC 95 por cento 0,04-0,26) ou de duas manobras ou mais (OR 0,09; IC 95 por cento 0,04-0,22) se apresentou como fator de proteção contra a episiotomia. Em relação à integridade perineal, os fatores independentemente associados foram: ter parto vaginal anterior (OR 3,88; IC 95 por cento 2,41-6,23) e cor da pele autorreferida não branca (OR 1,43; IC 95 por cento 1,01-2,04). As indicações para episiotomia incluíram, predominantemente, motivos relacionados às condições e dimensões do períneo. As manobras de proteção perineal foram utilizadas em aproximadamente 95 por cento dos partos vaginais, mas não impactaram as taxas de integridade perineal. Conclusões: As variáveis associadas à episiotomia incluíram, em sua maioria, fatores que podem ser controlados pelo profissional de saúde. Estas variáveis não impactaram as taxas de integridade perineal. Informar os profissionais que atuam na assistência ao parto e as mulheres que buscam esse atendimento sobre os fatores associados à condição perineal no parto vaginal pode contribuir para a redução da frequência de episiotomia e para preservar a integridade perineal no parto vaginal. Introduction: To investigate factors associated with perineal condition in vaginal delivery can result in modifications in the perineal care, in order to decrease the frequency of episiotomy and perineal lacerations in the vaginal delivery. Objectives: To identify factors associated with an episiotomy; to identify factors associated with perineal integrity in vaginal delivery; to describe the reasons for performing an episiotomy by nurse-midwives; and to identify the perineal protection maneuvers performed by nurse-midwives in a Birth Centre. Methods: Cross-sectional study with prospective data collection carried out through the application of a form to nurse-midwives in an In-hospital Birth Centre located in São Paulo city, Brazil, which included all women who gave birth in this service from February 2014 to January 2015. In the statistical analysis, the associations between the outcome variables (episiotomy and perineal integrity) and the sociodemographic, obstetric and care-related variables were estimated by Odds Ratios (OR), calculated in univariate and multivariate binary logistic regression models with a 95 per cent confidence intervals (95 per cent CI), in the SPSS software, version 20. Separated analyses were performed for each one of the outcome variables. The reasons for performing an episiotomy and the use of perineal protection maneuvers were described as frequencies and percentages. The study was approved in the Research Ethics Committees of the proposing and the co-participant institutions. Results: Data of 802 women were analysed (frequency of episiotomy of 23.8 per cent , 191 women; perineal integrity of 25.9 per cent , 208 women; perineal laceration of 50.3 per cent , 403 women). Factors identified as independently associated with an episiotomy were: no previous vaginal delivery (OR 26.72; 95 per cent CI 15.42-46.30), oxytocin use during labour (OR 1.69; 95 per cent CI 1.12-2.57), coached pushing (OR 2.05; 95 per cent CI 1.23-3.43), complications during labour (OR 2.61; 95 per cent CI 1.43-4.77) and semi-sitting position at delivery (OR 5.45; 95 per cent CI 1.06-28.01). The use of a perineal protective maneuver (OR 0.11; 95 per cent CI 0.04-0.26) or two maneuvers or more (OR 0.09; 95 per cent CI 0.04-0.22) was a protective factor against an episiotomy. Regarding the perineal integrity, the factors independently associated to this condition were: a previous vaginal delivery (OR 3.88; 95 per cent CI 2.41-6.23) and self-reported non-white skin color (OR 1.43; 95 per cent CI 1.01-2.04). Most of the indications for an episiotomy included reasons related to perineal conditions and dimensions. The perineal protection maneuvers were used in nearly 95 per cent of vaginal deliveries, but did not affect the perineal integrity rates. Conclusions: Most of the variables associated with an episiotomy were related to factors that can be controlled by the professional who provides labour and birth care. These variables did not influence the perineal integrity rates. To inform childbirth care professionals and women who are users of these services about the factors associated with the perineal condition at the childbirth can contribute for reducing the frequency of episiotomy and to preserve the perineal integrity in the vaginal delivery.

Time-series photometry on the cataclysmic variable V455 Andromedae (hereafter V455 And, HS 2331+3905) reveals a rotation period shorter than the orbital period, implying the presence of a magnetic field. We expect that this magnetic field channels the accreted matter from the disk toward the white dwarf poles, classifying it as an Intermediate Polar. The two polar spinning emission areas are visible in the lightcurves at the rotation period of 67.61970396 ± 0.00000072 s, and its harmonic. Using photometric observations of V455 And obtained from 2007 October to 2015, we derive 3σ upper limits to the rate of change of the spin harmonic (SH) with time to be dPSH/dt ≤ −7.5 × 10−15 s s−1 employing the O–C method, and −5.4 × 10−15 s s−1 with a direct nonlinear least squares fit. There is no significant detection of a changing spin period for the duration of 2007 October–2015. The 3σ upper limit for the rate of change of spin period with time is dPspin/dt ≤ −10.8 × 10−15 s s−1 or −0.34 μs yr−1. V455 And underwent a large-amplitude dwarf nova outburst in 2007 September. The pre-outburst data reflect a period 4.8 ± 2.2 μs longer than the best-fit post-outburst spin period. The angular momentum gained by the white dwarf from matter accreted during outburst and its slight subsequent shrinking should both cause the star to spin slightly faster after the outburst. We estimate that the change in spin period due to the outburst should be 5 μs, consistent with the empirical determination of 4.8 ± 2.2 μs (3σ upper limit of 11.4 μs).

Este estudio es parte de un proyecto mas amplio titulado «Estudio de la violencia intra familiar contra las adolescentes embarazadas se reunieron en una Unidad Basica de la Zona Este de Sao Paulo: Bases para la intervencion». Objetivo: describir el perfil socio-demografico de los adolescentes que forman parte del area de cobertura de una Unidad Basica de Salud ubicado en la zona este de Sao Paulo, asi como identificar sus fortalezas y vulnerabilidades que enfrentan situaciones de violencia. Material y metodos: se realizo un con enfoque prospectivo, descriptivo y exploratorio, cualitativo y cuantitativo. Sostenidos por Praxis Intervencion Teoria de Enfermeria de Salud Publica - TIPESC, se desarrollo con 10 adolescentes embarazadas que son parte del Programa de Salud de la Familia y viven en la zona este de Sao Paulo. Los datos fueron analizados de acuerdo a las recomendaciones propuestas por el Wasteland epidemiologica literatura (1990) y tardia y Pinto Junior (2010) , y el analisis del discurso de los temas contenidos en las entrevistas analizadas realizadas segun Fiorin (2005). Resultados: entre los principales resultados empiricos que presentamos cinco categorias: a) la invisibilidad de la violencia en la vida cotidiana, b) el embarazo como posibilidad de fortalecer el crecimiento y empoderamiento social c) la exclusion de los futuros padres durante el embarazo y el parto, d) fortalecimiento la familia de bonos y soporte de red consolidada e) la falta de confianza en los profesionales de la salud. Conclusiones: por lo tanto, este estudio contribuye al debate sobre las practicas de salud mas eficaz y eficiente orientada a satisfacer las adolescentes embarazadas victimas de violencia intra familiar.