bluuebunny/crossref_metadata_2025_split huggingface dataset:
Prevalência de Fatores de Risco Associados ao Câncer em Alunos do curso de Graduação em Ciências Biológicas
Authors: Cintra Mariangela Torreglosa Ruiz 
Published: February 2022

O câncer é uma doença de etiologia multifatorial, com fatores genéticos e ambientais. O conhecimento da prevalência dos fatores ambientais associados ao câncer é fundamental para prevenção. O objetivo deste trabalho foi investigar a prevalência de alguns fatores de risco associados ao câncer entre os alunos, do curso de graduação em Ciências Biológicas. Trata-se de um estudo, de abordagem quantitativa, com a aplicação de questionário. Na estatística, foi realizada uma análise descritiva dos dados com cálculos de frequência absoluta e relativa utilizando o programa RStudio. Entre os fatores de risco analisados já estabelecidos para o desenvolvimento do câncer, encontrou-se, a prevalência de: 56,84% já fumou ou é fumante; 64,38% consumo de bebidas alcóolicas; 65,06% sedentários; 45,57% exposição solar sem uso de protetor ou chapéu; 33,32% de sobrepeso ou obeso e 26,02% já estiveram sobre alguma exposição tóxica em seu ambiente de trabalho. Em relação a hábitos alimentares; 51,37% baixo consumo de frutas; 34,23% baixo consumo de legumes; 36,28% baixo consumo de verduras; 63,00% consomem carne vermelha com grande frequência; 5,47% não consomem carne branca e 69,86% consomem com muita frequência produtos industrializados. Nos cuidados com a saúde, 49,31% não consultam médicos com frequência e 34,24% não costumam fazer seus exames de rotina; 21,23% não utilizam preservativos. Em relação ao histórico familiar, 54,10% afirmaram ter a doença na família. Em conclusão, os fatores de risco relacionados com o consumo de álcool, proteção à exposição solar, cuidados com a saúde e alimentação são mais frequentes.
Near-Chandrasekhar-mass Type Ia Supernovae from the Double-degenerate Channel
Authors: Neopane Sudarshan , Bhargava Khanak , Fisher Robert , Ferrari Mckenzie , Yoshida Shin’ichirou , Toonen Silvia , Bravo Eduardo 
Published: February 2022

Abstract
Recent observational evidence has demonstrated that white dwarf (WD) mergers are a highly efficient mechanism for mass accretion onto WDs in the galaxy. In this paper, we show that WD mergers naturally produce highly magnetized, uniformly rotating WDs, including a substantial population within a narrow mass range close to the Chandrasekhar mass (M
Ch). These near-M
Ch WD mergers subsequently undergo rapid spin up and compression on a ∼ 102 yr timescale, either leading to central ignition and a normal SN Ia via the DDT mechanism, or alternatively to a failed detonation and SN Iax through pure deflagration. The resulting SNe Ia and SNe Iax will have spectra, light curves, polarimetry, and nucleosynthetic yields similar to those predicted to arise through the canonical near-M
Ch single degenerate (SD) channel, but with a t
−1 delay time distribution characteristic of the double-degenerate channel. Furthermore, in contrast to the SD channel, WD merger near-M
Ch SNe Ia and SNe Iax will not produce observable companion signatures. We discuss a range of implications of these findings, from SNe Ia explosion mechanisms, to galactic nucleosynthesis of iron peak elements including manganese.
Chemical Stratification in a Long Gamma-Ray Burst Cocoon and Early-time Spectral Signatures of Supernovae Associated with Gamma-Ray Bursts
Authors: Suzuki Akihiro , Maeda Keiichi 
Published: February 2022

Abstract
We present the results of 3D hydrodynamic simulations of a gamma-ray burst (GRB) jet emanating from a massive star with a particular focus on the formation of high-velocity quasi-spherical ejecta and the jet-induced chemical mixing. Recent early-time optical observations of supernovae associated with GRBs (e.g., GRB 171205A/SN 2017iuk) indicate a considerable amount of heavy metals in the high-velocity outer layers of the ejecta. Using our jet simulations, we show that the density and chemical structure of the outer ejecta implied by observations can be naturally reproduced by a powerful jet penetrating the progenitor star. We consider three representative jet models with a stripped massive star, a standard jet, a weak jet, and a jet choked by an extended circumstellar medium, to clarify the differences in the dynamical evolution and the chemical properties of the ejected materials. The standard jet successfully penetrates the progenitor star and creates a quasi-spherical ejecta component (cocoon). The jet-induced mixing significantly contaminates the cocoon with heavy elements that have been otherwise embedded in the inner layer of the ejecta. The weak and choked jet models fail to produce an ultrarelativistic jet but produce a quasi-spherical cocoon with different chemical properties. We discuss the impact of the different jet−star interactions on the expected early-time electromagnetic signatures of long GRBs and how to probe the jet dynamics from observations.
High-resolution Near-infrared Spectroscopy of a Flare around the Ultracool Dwarf vB 10
Authors: Kanodia Shubham , Ramsey Lawrence W. , Maney Marissa , Mahadevan Suvrath , Cañas Caleb I. , Ninan Joe P. , Monson Andrew , Kowalski Adam F. , Goumas Maximos C. , Stefansson Gudmundur , Bender Chad F. , Cochran William D. , Diddams Scott A. , Fredrick Connor , Halverson Samuel , Hearty Fred , Janowiecki Steven , Metcalf Andrew J. , Odewahn Stephen C. , Robertson Paul , Roy Arpita , Schwab Christian , Terrien Ryan C. 
Published: February 2022

Abstract
We present high-resolution observations of a flaring event in the M8 dwarf vB 10 using the near-infrared Habitable-zone Planet Finder (HPF) spectrograph on the Hobby-Eberly Telescope. The high stability of HPF enables us to accurately subtract a vB 10 quiescent spectrum from the flare spectrum to isolate the flare contributions and study the changes in the relative energy of the Ca ii infrared triplet, several Paschen lines, the He λ10830 triplet lines, and to select iron and magnesium lines in HPF's bandpass. Our analysis reveals the presence of a red asymmetry in the He λ10830 triplet, which is similar to signatures of coronal rain in the Sun. Photometry of the flare derived from an acquisition camera before spectroscopic observations and the ability to extract spectra from up-the-ramp observations with the HPF infrared detector enable us to perform time-series analysis of part of the flare and provide coarse constraints on the energy and frequency of such flares. We compare this flare with historical observations of flares around vB 10 and other ultracool M dwarfs and attempt to place limits on flare-induced atmospheric mass loss for hypothetical planets around vB 10.
At What Mass Are Stars Braked? The Implication from the Turnoff Morphology of NGC 6819
Authors: Yang Yong , Li Chengyuan , Huang Yang , Liu Xiaowei 
Published: February 2022

Abstract
Extended main-sequence turnoffs (eMSTOs) apparent in most young and intermediate-age clusters (younger than ∼2 Gyr) are known features caused by fast rotating early-type (earlier than F-type) stars. Late-type stars are not fast rotators because their initial angular momenta have been quickly dispersed due to magnetic braking. However, the mass limit below which stars have been magnetically braked has not been well constrained by observation. In this paper, we present an analysis of the eMSTO of NGC 6819, an open cluster of an intermediate-age (∼2.5 Gyr), believed to be comparable to the lifetime of stars near the mass limit for magnetic braking. By comparing the observation with synthetic color–magnitude diagrams, we find that NGC 6819 does not harbor an obvious eMSTO. The morphology of its turnoff region can be readily explained by a simple stellar population considering the observational uncertainties as well as the differential reddening. In addition, the MSTO stars in NGC 6819 have very small values of average rotational velocity and dispersion, indicating that they have undergone significant magnetic braking. Combining with results in the literature for clusters of younger ages, our current work suggests that the critical age for the disappearance of eMSTO in star clusters must be shorter but very close to the age of NGC 6819, and this in turn implies a critical stellar mass for magnetic braking at solar metallicity above but close to 1.54 M
⊙ based on the PARSEC model. We emphasize that the phenomenon of eMSTO could provide an unique way to constrain the onset mass of magnetic braking.
Consistency of Planck Data With Power-law Primordial Scalar Power Spectrum
Authors: Farhang Marzieh , Esmaeilian Muhammad Sadegh 
Published: February 2022

Abstract
In this work we explore the possibility of variations in the primordial scalar power spectrum around the power-law shape, as predicted by single-field slow-roll inflationary scenarios. We search for a trace of these fluctuations in a semiblind, model-independent way in observations of the cosmic microwave background (CMB) sky. In particular, we use two sets of perturbation patterns, specific patterns with typical features such as oscillations, bumps, and transitions, as well as perturbation modes, constructed from eigenanalysis of the forecasted or measured covariance of perturbation parameters. These modes, in principle, span the parameter space of all possible perturbations to the primordial spectrum and, when rank ordered, the ones with the highest detectability would suffice to explore the constrainable features around the power-law spectrum in a data-driven (and not theoretically biased) manner. With Planck measurements of CMB anisotropies, the amplitudes of all perturbation patterns considered in this work are found to be consistent with zero. This finding confirms, in the absence of theoretical biases, the consistency of the Planck data with the assumption of a power-law inflationary pattern for the primordial spectrum.
The Physics of the MHD Disk–Jet Transition in Binary Systems: Jetted Spiral Walls Launched from Disk Spiral Arms
Authors: Sheikhnezami Somayeh , Fendt Christian 
Published: February 2022

Abstract
We present a detailed physical analysis of the jet-launching mechanism of a circumstellar disk that is located in a binary system. Applying 3D resistive magnetohydrodynamics simulations, we investigate the local and global properties of the system, such as angular momentum transport and accretion and ejection mass fluxes. In comparison to previous works, for the first time we have considered the full magnetic torque, the presence of an outflow and thus the angular momentum transport by vertical motion, and the binary torque. We discuss its specific 3D structure and how it is affected by tidal effects. We find that the spiral structure evolving in the disk is launched into the outflow. We propose calling this newly discovered structure a jet spiral wall. These spiral features follow the same time evolution, with the jet spiral somewhat lagging the disk spiral. We find that the vertical transport of angular momentum has a significant role in the total angular momentum budget also in a binary system. The same holds for the magnetic torque; however, the contribution from the ϕderivative of the magnetic pressure and B

ϕ

B

r
stresses are small. The gravity torque arising from the time-dependent 3D Roche potential becomes essential, as it constitutes the fundamental cause for all 3D effects appearing in our disk–jet system. Quantitatively, we find that the disk accretion rate in a binary system increases by 20% compared to a disk around a single star. The disk wind mass flux increases by even 50%.
Varstrometry for Off-nucleus and Dual Subkiloparsec AGN (VODKA): Hubble Space Telescope Discovers Double Quasars
Authors: Chen Yu-Ching , Hwang Hsiang-Chih , Shen Yue , Liu Xin , Zakamska Nadia L. , Yang Qian , Li Jennifer I. 
Published: February 2022

Abstract
Dual supermassive black holes (SMBHs) at ∼kiloparsec scales are the progenitor population of SMBH mergers and play an important role in understanding the pairing and dynamical evolution of massive black holes in galaxy mergers. Because of the stringent resolution requirement and the apparent rareness of these small-separation pairs, there are scarce observational constraints on this population, with few confirmed dual SMBHs at <10 kpc separations at z > 1. Here we present results from a pilot search for kiloparsec-scale dual quasars selected with Gaia Data release 2 (DR2) astrometry and followed up with Hubble Space Telescope (HST) Wide Field Camera 3 dual-band (F475W and F814W) snapshot imaging. Our targets are quasars primarily selected with the varstrometry technique, i.e., light centroid jitter caused by asynchronous variability from both members in an unresolved quasar pair, supplemented by subarcsecond pairs already resolved by Gaia DR2. We find an overall high fraction of HST-resolved pairs among the varstrometry-selected quasars (unresolved in Gaia DR2), ∼30%–50%, increasing toward high redshift (∼60%–80% at z > 1.5). We discuss the nature of the 45 resolved subarcsecond pairs based on HST and supplementary data. A substantial fraction (∼40%) of these pairs are likely physical quasar pairs or gravitationally lensed quasars. We also discover a triple quasar candidate and a quadruply lensed quasar, which is among the smallest-separation quadruple lenses. These results provide important guidelines to improve varstrometry selection and follow-up confirmation of ~kiloparsec-scale dual SMBHs at high redshift.
Statistical Properties of the Population of the Galactic Center Filaments: the Spectral Index and Equipartition Magnetic Field
Authors: Yusef-Zadeh F. , Arendt R. G. , Wardle M. , Heywood I. , Cotton W. , Camilo F. 
Published: February 2022

Abstract
We present high-pass-filtered continuum images of the inner 3.°5 × 2.°5 of the Galactic center at 20 cm with 6.″4 resolution. These mosaic images are taken with MeerKAT and reveal a large number of narrow filaments, roughly an order of magnitude increase in their numbers compared to past measurements. For the first time, we carry out population studies of the spectral index and magnetic field of the entire region. The mean spectral indices of the filaments are steeper than supernova remnants (SNRs) (−0.62) with a value of α ∼ −0.83. The variation in α is much larger than for the SNRs, suggesting that these characteristics have a different origin. A large-scale cosmic-ray-driven wind has recently been proposed to explain the origin of filaments and the large-scale 430 pc bipolar radio and X-ray structure. This favors the possibility that the large-scale bipolar radio/X-ray structure is produced by past activity of Sgr A* rather than a coordinated burst of supernovae. A trend of steeper indices is also noted with increasing distance from the Galactic plane. This could be explained either by synchrotron cooling or weak shocks accelerating cosmic-ray particles in the context of the cosmic-ray-driven wind. The mean magnetic field strengths along the filaments range from ∼100 to 400 μG depending on the assumed ratio of cosmic-ray protons to electrons. Given that there is a high cosmic-ray pressure in the Galactic center, the large equipartition magnetic field implies that the magnetic filed is weak in most of the interstellar volume of the Galactic center.
Reconciling Multi-messenger Constraints with Chiral Symmetry Restoration
Authors: Marczenko Michał , Redlich Krzysztof , Sasaki Chihiro 
Published: February 2022

Abstract
We analyze the recent astrophysical constraints in the context of a hadronic equation of state (EoS) in which the baryonic matter is subject to chiral symmetry restoration. We show that with such EoS it is possible to reconcile the modern constraints on the neutron star (NS) mass, radius, and tidal deformability (TD). We find that the softening of the EoS, required by the TD constraint of a canonical 1.4 M
⊙ NS, followed by a subsequent stiffening, required by the 2 M
⊙ constraint, is driven by the appearance of Δ matter due to partial restoration of chiral symmetry. Consequently, a purely hadronic EoS that accounts for the fundamental properties of quantum chromodynamics linked to the dynamical emergence of parity doubling with degenerate masses of nucleons and Δ resonances can be fully consistent with multi-messenger data. Therefore, with the present constraints on the EoS, the conclusion about the existence of quark matter in the stellar core may still be premature.
A New UV Spectral Feature on Europa: Confirmation of NaCl in Leading-hemisphere Chaos Terrain
Authors: Trumbo Samantha K. , Becker Tracy M. , Brown Michael E. , Denman William T. P. , Molyneux Philippa , Hendrix Amanda , Retherford Kurt D. , Roth Lorenz , Alday Juan 
Published: February 2022

Abstract
Recent visible-wavelength observations of Europa’s surface obtained with the Hubble Space Telescope (HST) revealed the presence of an absorption feature near 450 nm that appears spatially correlated with leading-hemisphere chaos terrain. This feature was interpreted to reflect the presence of irradiated sodium chloride ultimately sourced from the interior. Here, we use ultraviolet spectra also collected with the HST to detect an additional previously unseen absorption near 230 nm, which spatially correlates with the 450 nm feature and with the same leading-hemisphere chaos terrain. We find that the new ultraviolet feature is also well matched by irradiated sodium chloride at Europa-like conditions. Such confirmation of sodium chloride within geologically young regions has important implications for Europa’s subsurface composition.
Die Inschrift der „ Figure aux plumes “
Authors: Keetman Jan 
Published: February 2022

L’inscription de la « Figure aux plumes » comprend peut-être le plus ancien texte poétique mais reste très difficile à lire. La nouvelle analyse met l’accent sur la structure poétique, le genre possible et la place dans l’histoire. Il est proposé que le revers soit à lire de bas en haut. À la fin, une théorie est développée qui peut expliquer pourquoi un texte sur l’attribution de champs au Dieu Ninĝirsu est combiné avec une partie littéraire encore plus longue. Il est également proposé que l’attribution n’était pas faite au nom d’un souverain local mais au nom du souverain d’Uruk.
Ur III Texts in The Vernadsky National Library of Ukraine
Authors: Jan de Ridder Jacob , Zomer Elyze 
Published: February 2022

L’article suivant présente une petite collection de cinq tablettes administratives d’Ur III qui sont maintenant conservées à l’Institut des manuscrits de la Bibliothèque nationale Vernadsky d’Ukraine à Kiev. Les numéros 1-2 proviennent de la ville de Ĝirsu et ont été documentés par le savant russe Turaev au début du 20 e siècle, tandis que les numéros 3-5 étaient auparavant inconnus et proviennent du site antique d’Umma. Toutes les tablettes sont présentées ici ensemble, avec une courte introduction, une traduction, une édition et une copie.
Murder in Mesopotamia? The Case of an Unusual Burial in Tell Mohammed Diyab (Syria)
Authors: Verardi Virginia , Lemée Émilie 
Published: February 2022

En 2008 les fouilles d’un espace domestique du chantier 1 de Tell Mohammed Diyab ont révélé une anomalie dans un sol en pierre : l’absence de pierres dans une zone a permis de mettre au jour une fosse à l’intérieur de laquelle ont été trouvés deux corps, visiblement jetés à l’intérieur. Certains éléments détectés sur les corps ont permis, lors de l’étude anthropologique, de déterminer que les deux personnes avaient été assassinées.
Le détour de l’Autre
Authors: Stan Corina 
Published: February 2022

En examinant les figures du colonisé et de l’immigré, Certeau voit le risque que nous devenions tous des « Indiens de l’intérieur », c’est-à-dire sans voix politique. En lisant la société occidentale à la lumière de l’Autre, il contribue à la décolonisation de la raison.
L’alsacien dans la sphère économique : nouvelle donne dans les usages ou accélération de leur déclin ?
Authors: Erhart Pascale , Kahn René 
Published: February 2022

L’affaire semble entendue : les langues régionales et leurs locuteurs comme tous les acteurs et toutes les ressources mobilisables sont placés sous l’emprise de la rationalité, des pratiques et des finalités économiques et ils en souffrent. D’autant que le modèle dominant de la concurrence généralisée et de la mondialisation s’impose sans partage et sans autre langage que celui du calcul économique. Dans ce contexte, les usages économiques de l’alsacien ne renvoient-ils qu’à une survivance du passé, à la patrimonialisation utilitariste et commerciale d’une langue minorisée ou au contraire dénotent-ils un certain génie de la langue régionale, sa capacité à faire évoluer les pratiques économiques et le modèle de développement territorial, tout en autorisant à travers un éventail de fonctions, sa propre perpétuation et son enrichissement ? L’analyse d’un corpus resserré de pratiques dans le champ économique commercial et touristique permet de développer des hypothèses intéressantes dans ce sens. Une première partie, plus théorique, tente de mieux expliciter la nature complexe et ambivalente des relations langues/économie. La deuxième partie est consacrée à l’étude du cas alsacien : à partir d’exemples recensés dans les grands est consacrée à l’étude du cas alsacien : à partir d’exemples recensés dans les grands domaines dans lesquels l’alsacien est mobilisé à des fins économiques, nous montrons quelles sont les originalités de la région par rapport aux formes d’utilisation que l’on peut considérer comme « classiques », en distinguant les utilisations tendant à faire de la langue un simple gadget de celles qui permettent d’en faire un véritable facteur d’affirmation régionale et de contribuer à son institutionnalisation.
Artistes en situation de handicap : une approche conversationnelle de l’identité personnelle
Authors: Verdier Maud 
Published: February 2022

Lorsque des comédiens et comédiennes en situation de handicap exercent leur métier d’artiste, on constate souvent qu’ils mobilisent une identité personnelle variable, tantôt axée sur leur statut professionnel, tantôt sur leur handicap mental ou psychique, tantôt sur un mélange complexe de ces deux facettes. Cet article vise à mettre au jour les propriétés interactionnelles des situations de travail qui favorisent l’émergence de telle ou telle facette de l’identité personnelle. Est examiné en particulier l’usage de la catégorie « handicapé » énoncée en première personne par un comédien dans des phases de répétition. L’analyse conversationnelle de ces situations de travail permettra de mieux comprendre les agencements interactionnels qui conduisent à utiliser cette autocatégorisation, non pour renvoyer au statut social qui lui est associé, mais pour revendiquer le plein exercice d’une identité professionnelle. L’article s’inscrit dans le cadre d’une recherche qui vise à explorer les formes de vie dans lesquelles s’inscrivent les personnes en situation de handicap mental ou psychique. Cette recherche prend appui sur une enquête ethnographique qui a inclus le recueil de données audiovisuelles des séances de travail d’une compagnie de théâtre professionnelle d’un Esat artistique.