bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reproduction Experiments of Radial Pyroxene Chondrules Using a Gas-jet Levitation System under Reduced Conditions
Authors: Watanabe Kana , Nakamura Tomoki , Morita Tomoyo 
Published: January 2024

Abstract
Reproduction experiments of radial pyroxene (RP) chondrules were carried out using an Ar–H2 or Ar gas-jet levitation system in a reducing atmosphere in order to simulate chondrule formation in the protoplanetary disk. The experiments reproduced RP-chondrule textures, consisting of sets of thin pyroxene crystals and mesostasis glass between crystals. However, iron partition coefficients between pyroxene and glassy mesostasis (DFe =Fe mol%pyroxene/Fe mol%mesostasis) in natural RP chondrules were much higher than that in the experimentally reproduced RP chondrules. The high DFe in natural RP chondrules suggests that iron was removed from the mesostasis melt at high temperatures after the growth of pyroxene crystals. We found that many small iron-metal inclusions had formed in the mesostasis glass, indicating that FeO in the high-temperature melt of mesostasis was reduced to metallic iron, and iron in the mesostasis diffused into the newly formed metal inclusions. The formation of the iron-metal inclusions in the mesostasis was reproduced by our experiments in a reducing atmosphere, confirming that DFe in natural RP chondrules increased after the growth of RP crystals. Therefore, the DFe of RP chondrules can be an indicator to constrain cooling rates and redox states during chondrule formation.
A Census of Star Formation Histories of Massive Galaxies at 0.6 < z < 1 from Spectrophotometric Modeling Using Bagpipes and Prospector
Authors: Kaushal Yasha , Nersesian Angelos , Bezanson Rachel , van der Wel Arjen , Leja Joel , Carnall Adam , Gallazzi Anna , Zibetti Stefano , Khullar Gourav , Franx Marijn , Muzzin Adam , de Graaff Anna , Pacifici Camilla , Whitaker Katherine E. , Bell Eric F. , Martorano Marco 
Published: January 2024

Abstract
We present individual star formation histories (SFHs) of ∼3000 massive galaxies (log(M
*/M
⊙) > 10.5) from the Large Early Galaxy Astrophysics Census spectroscopic survey at a lookback time of ∼7 billion yr and quantify the population trends leveraging 20 hr deep-integrated spectra of these ∼1800 star-forming and ∼1200 quiescent galaxies at 0.6 < z < 1.0. Essentially all galaxies at this epoch contain stars of age <3 Gyr, in contrast with older massive galaxies today, facilitating better recovery of previous generations of star formation at cosmic noon and earlier. We conduct spectrophotometric analysis using parametric and nonparametric Bayesian stellar population synthesis modeling tools—Bagpipes and Prospector—to constrain the median SFHs of this mass complete sample and characterize population trends. A consistent picture arises for the late-time stellar mass growth when quantified as t
50 and t
90, corresponding to the age of the Universe when galaxies formed 50% and 90% of their total stellar mass, although the two methods disagree at the earliest formation times (e.g., t
10). Our results reveal trends in both stellar mass and stellar velocity dispersion as in the local Universe—low-mass galaxies with shallower potential wells grow their stellar masses later in cosmic history compared to high-mass galaxies. Unlike local quiescent galaxies, the median duration of late-time star formation (τ
SF,late = t
90–t
50) does not consistently depend on the stellar mass. This census sets a benchmark for future deep spectrophotometric studies of the more distant Universe.
Protostellar Chimney Flues: Are Jets and Outflows Lifting Submillimeter Dust Grains from Disks into Envelopes?
Authors: Cacciapuoti L. , Testi L. , Podio L. , Codella C. , Maury A. J. , De Simone M. , Hennebelle P. , Lebreuilly U. , Klessen R. S. , Molinari S. 
Published: January 2024

Abstract
Low dust opacity spectral indices (β < 1) measured in the inner envelopes of class 0/I young stellar objects (age ∼104–5 yr) have been interpreted as the presence of (sub-)millimeter dust grains in these environments. The density conditions and the lifetimes of collapsing envelopes have proven unfavorable for the growth of solids up to millimeter sizes. As an alternative, magnetohydrodynamical simulations suggest that protostellar jets and outflows might lift grains from circumstellar disks and diffuse them in the envelope. We reframe available data for the CALYPSO sample of Class 0/I sources and show tentative evidence for an anticorrelation between the value of β
1–3 mm measured in the inner envelope and the mass-loss rate of their jets and outflows, supporting a connection between the two. We discuss the implications that dust transport from the disk to the inner envelope might have for several aspects of planet formation. Finally, we urge for more accurate measurements of both correlated quantities and the extension of this work to larger samples, necessary to further test the transport scenario.
The CO Outflow Components Ejected by a Recent Accretion Event in B335
Authors: Kim Chul-Hwan , Lee Jeong-Eun , Peña Carlos Contreras , Johnstone Doug , Herczeg Gregory J. , Tobin John J. , Evans II Neal J. 
Published: January 2024

Abstract
Protostellar outflows often present a knotty appearance, providing evidence of sporadic accretion in stellar mass growth. To understand the direct relation between mass accretion and ejection, we analyze the contemporaneous accretion activity and associated ejection components in B335. B335 has brightened in the mid-IR by 2.5 mag since 2010, indicating increased luminosity, presumably due to an increased mass accretion rate onto the protostar. Atacama Large Millimeter/submillimeter Array (ALMA) observations of 12CO emission in the outflow reveal high-velocity emission, estimated to have been ejected 4.6–2 yr before the ALMA observations and consistent with the jump in mid-IR brightness. The consistency in timing suggests that the detected high-velocity ejection components are directly linked to the most recent accretion activity. We calculated the kinetic energy, momentum, and force for the ejection component associated with the most recent accretion activity and found that, at least, about 1.0% of the accreted mass has been ejected. More accurate information on the jet inclination and the temperature of the ejected gas components will better constrain the ejected mass induced by the recently enhanced accretion event.
The Distribution of Semidetached Binaries. I. An Efficient Pipeline
Authors: Xiong Jianping , Ding Xu , Li Jiadong , Ge Hongwei , Cheng Qiyuan , Ji Kaifan , Han Zhanwen , Chen Xuefei 
Published: January 2024

Abstract
Semidetached binaries are in the stage of mass transfer and play a crucial role in studying the physics of mass transfer between interacting binaries. Large-scale time-domain surveys provide many light curves of binary systems, while Gaia offers high-precision astrometric data. In this paper, we develop, validate, and apply a pipeline that combines the Markov Chain Monte Carlo method with a forward model and DBSCAN clustering to search for semidetached binaries and estimate the inclination, relative radius, mass ratio, and temperature ratio of each using light curves. We train our model on the mock light curves from Physics of Eclipsing Binaries (PHOEBE), which provides broad coverage of light-curve simulations for semidetached binaries. Applying our pipeline to Transiting Exoplanet Survey Satellite sectors 1–26, we have identified 77 semidetached binary candidates. Utilizing the distance from Gaia, we determine their masses and radii with median fractional uncertainties of ∼26% and ∼7%, respectively. With the added 77 candidates, the catalog of semidetached binaries with orbital parameters has been expanded by approximately 20%. The comparison and statistical results show that our semidetached binary candidates align well with the compiled samples and the PARSEC model in T
eff–L and M–R relations. Combined with the literature samples, comparative analysis with stability criteria for conserved mass transfer indicates that ∼97.4% of samples are undergoing nuclear-timescale mass transfer, and two samples (GO Cyg and TIC 454222105) are located within the limits of stability criteria for dynamical- and thermal-timescale mass transfer, and are currently undergoing thermal-timescale mass transfer. Additionally, one system (IR Lyn) is very close to the upper limit of delayed dynamical-timescale mass transfer.
Tidal Disruption Events through the Lens of the Cooling Envelope Model
Authors: Sarin Nikhil , Metzger Brian D. 
Published: January 2024

Abstract
The cooling envelope model for tidal disruption events (TDEs) postulates that while the stellar debris streams rapidly dissipate their bulk kinetic energy (“circularize”), this does not necessarily imply rapid feeding of the supermassive black hole (SMBH). The bound material instead forms a large pressure-supported envelope that powers optical/UV emission as it undergoes gradual Kelvin–Helmholtz contraction. We present results interpreting a sample of 15 optical TDEs within the cooling envelope model in order to constrain the SMBH mass M
BH, stellar mass M
⋆, and orbital penetration factor β. The distributions of inferred properties from our sample broadly follow the theoretical expectations of loss-cone analysis assuming a standard stellar initial mass function. However, we find a deficit of events with M
BH ≲ 5 × 105 and M
⋆ ≲ 0.5 M
⊙, which could result in part from the reduced detectability of TDEs with these properties. Our model fits also illustrate the predicted long delay between the optical light-curve peak and when the SMBH accretion rate reaches its maximum. The latter occurs only once the envelope contracts to the circularization radius on a timescale of months to years, consistent with delayed-rising X-ray and nonthermal radio flares seen in a growing number of TDEs.
Explosive Nucleosynthesis in Core-collapse Type II Supernovae: Insights from New C, N, Si, and Al–Mg Isotopic Compositions of Presolar Grains
Authors: Liu Nan , Alexander Conel M. O’D. , Meyer Bradley S. , Nittler Larry R. , Wang Jianhua , Stroud Rhonda M. 
Published: January 2024

Abstract
We report C, N, Si, and Al–Mg isotope data for 39 presolar X silicon carbide (SiC) and four silicon nitride grains—a group of presolar grains that condensed in the remnants of core-collapse Type II supernovae (CCSNe)—isolated from the Murchison meteorite. Energy dispersive X-ray data were used to determine the Mg and Al contents of the X SiC grains for comparison with the Mg/Al ratios determined by secondary ion mass spectroscopy (SIMS). Previous SIMS studies have used O-rich standards in the absence of alternatives. In this study, the correlated isotopic and elemental data of the X SiC grains enabled accurate determination of the initial 26Al/27Al ratios for the grains. Our new grain data suggest that (i) the literature data for X grains are affected to varying degrees by asteroidal/terrestrial contamination, and (ii) the Al/Mg ratios in SiC are a factor of 2 (with ±6% 1σ uncertainties) lower than estimated based on the SIMS analyses that used O-rich standards. The lowered Al/Mg ratios result in proportionally higher inferred initial 26Al/27Al ratios for presolar SiC grains. In addition, the suppression of asteroidal/terrestrial contamination in this study leads to the observation of negative trends for 12C/13C–30Si/28Si and 26Al/27Al–30Si/28Si among our CCSN grains. We discuss these isotope trends in the light of explosive CCSN nucleosynthesis models, based on which we provide new insights into several nontraditional CCSN nucleosynthesis processes, including explosive H burning, the existence of a C/Si zone in the outer regions of CCSNe, and neutrino–nucleus reactions in deep CCSN regions.
S’engager dans des méthodes mixtes de recherche : croyances ontologiques et vertus épistémiques sous-tendant une pratique scientifique singulière
Authors: Quidu Matthieu 
Published: January 2024

Depuis une quinzaine d’années, l’espace français des Sciences du sport est marqué par le développement d’une pratique singulière de recherche consistant à recueillir, croiser et confronter, au sein d’une même étude, des matériaux empiriques de nature hétérogène, respectivement dits en « première personne » (documentant l’expérience vécue de l’acteur) et en « troisième personne » (renseignant les dimensions objectivables de son activité). Afin de mieux comprendre la massification (relative) de cette manière singulière de faire de la recherche, qui structure de nombreux événements académiques en 2023, le parti pris épistémologique a consisté à mettre la focale sur le point de vue des acteurs et actrices l’ayant développée. Ont ainsi été interrogé.es, au moyen d’entretiens semi-directifs, dix-sept chercheurs et chercheuses en STAPS s’y engageant. Nous avons pu mettre au jour deux types de facteurs unifiant ces démarches articulatoires, par-delà la disparité de leurs opérationnalisations empiriques. D’une part, les croyances ontologiques qui les sous-tendent sont organisées autour de deux méta-orientations : le perspectivisme et la stratification du réel. D’autre part, elles sont structurées par un système de valeurs – voire de vertus – épistémiques dont l’ouverture, la curiosité, le pluralisme et l’autocritique. Ces deux niveaux, ontologiques et éthiques, convergeant vers une prise en compte de la complexité, de la globalité et de l’indissociabilité des phénomènes, définissent finalement une attitude commune vis-à-vis du réel et du savoir faisant des démarches articulatoires davantage une posture qu’une méthode de recherche.
Pratiques évaluatives en EPS dans trois contextes avec un programme commun et des modes de communication de l’évaluation sommative différents : les apports d’une approche mixte
Authors: Lentillon-Kaestner Vanessa , Voisard Nicolas 
Published: January 2024

Basée sur une approche mixte, cette étude s’intéresse aux pratiques évaluatives en EPS dans trois cantons de Suisse romande où le programme scolaire est identique, mais où les modes de communication de l’évaluation sommative diffèrent : une note certificative dans le canton de Genève, une note non certificative dans le canton du Jura, un livret d’évaluation dans le canton de Vaud (pas de note). Au total, 214 enseignants ont été interrogés par questionnaires et 10 enseignants ont participé à deux entretiens réalisés avant et après des observations en classe. Des analyses statistiques et de contenu thématique ont été réalisées. Dans cette étude, les données qualitatives (importance accordée aux évaluations, visées prioritaires) ont permis de mieux comprendre les données chiffrées issues des questionnaires (fréquences des évaluations). Les résultats de l’étude montrent que les évaluations, qu’elles soient diagnostiques, formatives, et sommatives, sont plus fréquemment mises en place et plus formalisées dans le canton de Genève avec une note certificative. Les visées prioritaires diffèrent dans les trois cantons étudiés avec une priorisation des compétences motrices dans le contexte genevois. Des pistes explicatives et des propositions afin d’améliorer l’étude des pratiques évaluatives et la qualité de l’enseignement de l’EPS sont proposées.
La mesure du monde. Le Grand Verre de terre / Vidre de Meravelles (2016) de Miquel Barceló
Authors: Castanon-Akrami Brice 
Published: January 2024

L’œuvre monumentale et éphémère Le Grand Verre de terre / Vidre de Meravelles (2016) a été réalisée par Miquel Barceló en février 2016 sur les vitres de la Bibliothèque nationale de France (BnF). Il en reste aujourd’hui des milliers de photos publiées sur internet ou conservées dans des archives privées, des documentaires ainsi qu’un livre d’art paru en 2020 chez La Fábrica où les photographes Jean-Marie del Moral, François Halard et André Morin ont saisi des détails ou reconstitué chacun des panneaux qui composent ce vitrail imposant et fragile. Dans ce livre, Miquel Barceló a nommé ou éludé certains éléments qui y sont représentés. C’est à partir de ces documents et de l’observation in situ de l’œuvre, désormais disparue, que nous avons étudié l’intericonicité, l’autoréférentialité et la manière savante et ironique de l’artiste avec laquelle il affirme une conception originale de l’histoire de l’art et, plus largement, une conception du monde sous l’influence des révolutions induites par les découvertes des anthropologues et préhistoriens. Quelle relation au monde Le Grand Verre de terre / Vidre de Meravelles donne-t-il à voir ?
Brossa, Casasses, Perejaume et l’esprit catalan : confluences et ramifications artistiques
Authors: Güell Mònica 
Published: January 2024

Les soubresauts historiques de la Catalogne au XXe ont marqué intellectuels et artistes catalans qui se sont engagés, avec la plume ou le pinceau, pour défendre une identité muselée et piétinée par quarante ans de franquisme. Dans le dernier tiers du XXe siècle, au cœur des années révoltées, l’œuvre poétique de Joan Brossa (1919-1998) est de bout en bout une défense et illustration de la langue et de l’identité catalanes. Deux autres poètes et artistes engagés, catalans jusqu’à la moelle, d’une génération postérieure à celle de Brossa, sont ici étudiés : Enric Casasses (né en 1951) et Perejaume (né en 1957). Par-delà les différences, on se propose de mettre en lumière des confluences artistiques et idéologiques entre eux, à travers l’analyse de textes qui rendent hommage à la langue, aux arts, au territoire et à la terre catalane, au génie créateur de Gaudí, Jujol ou Miró.
Des traductions de Ruskin à celle du « livre intérieur »
Authors: Pradeau Christophe , Vernet Matthieu 
Published: January 2024

Proust consacre six ans de sa vie, de 1899 à 1905, à traduire et annoter John Ruskin. Comment un chantier collectif, impliquant sa mère et des amis comme Marie Nordlinger, l’aura-t-il conduit, une fois refermé « l’ère des traductions », à se consacrer à la traduction de soi-même, autrement dit au déchiffrement du « livre intérieur » ? Comparer la conception et la pratique proustiennes de la traduction à celle du pastiche, deux activités « synthétiques » mais qui ont une contrepartie « analytique », permet d’apporter des éléments de réponse à cette question.
Incidence of heart failure with preserved ejection fraction (HFpEF) in COPD patients during acute exacerbation in Ain Shams University Hospitals
Authors: Sayed Hossam H , Abdelatif Gamal A , Salem Hala M , Arakib Ahmed K , Yousef Yehia R 
Published: January 2024

Abstract

Background
Cardiovascular comorbidities are frequent in chronic obstructive pulmonary disease (COPD) and are associated with a worse prognosis, and the presence of COPD has a negative impact on cardiovascular disease and heart failure The available estimates of the prevalence of diastolic dysfunction vary widely, probably due to different diagnostic approaches and small sample sizes.

Aim
Perspective analytical comparison of ECHO findings (done or will be done) within a 3-month interval of acute exacerbations.

Outcomes
Previous or prospective comparison of EF with current findings at the examination station or grade of diastolic dysfunction, Left atrial dimension, E/A, E/e′ ratios, and slope findings among the 3-month follow-up period perceptively (incidence) in the following two groups, namely Group A: the patient group with prior EHCO findings showing no heart failure with preserved ejection fraction (HFpEF) before enrollment but develop HFpEF during acute exacerbations. Group B: the patient group with ECHO findings of HFpEF following acute exacerbations within 3 months or thereafter.

Patients and methods
Patients with confirmed COPD by spirometry were evaluated by echocardiography initially as baseline and 3 months after for the assessment of diastolic dysfunction grades. Those patients are divided into two groups as inpatients and outpatients.

Results
An observational cross-sectional study including 36 COPD diagnosed patients: 33 males and 3 females with a mean age of (58.5 ± 7.7 years). The patients were divided into 17 inpatients and 19 outpatients. These patients were divided according to COPD severity into groups A, B, and C (outpatient group) and D (inpatient group) as 7, 9, 3, and 17 patients, respectively. Comparisons between baseline echocardiographic findings and after 3 months’ follow-up were processed. There were significant increases of tricuspid regurgitation (TR) and diastolic dysfunction in COPD group D compared with the other group at baseline and in the same group after a 3-month follow-up and significant correlation with COPD grade D cases and high-grade diastolic dysfunction. There were significant decrease of TR and decrease of diastolic dysfunction grades after a 3-month follow-up of acute exacerbations compared with baseline. It was found that spirometry parameters were nonstatistically different at baseline concerning the existing diverse diastolic dysfunction. However, only a significant negativecorrelation was found between baseline left atrial dimension and forced expiratory volume in first second/percentage of forced vital capacity.

Conclusion
COPD severity influences the HFpEF with tendency to increase diastolic dysfunction and TR, which could be improved with COPD management. Assessment of left ventricular diastolic dysfunction is pivotal.
Correlation between diaphragmatic function and skeletal muscle mass in chronic obstructive pulmonary disease
Authors: Saeed Adel M , AbdelFattah Eman B , Mahmoud Mahmoud M , Farouq Bahaa A 
Published: January 2024

Abstract

Background
Skeletal muscle dysfunction occurs in patients with chronic obstructive pulmonary disease and influences both respiratory and nonrespiratory muscles. This is a very important comorbidity leading to a poor prognosis, including increased mortality and hospitalization. It is the result of a complex combination of functional, metabolic, and anatomical changes that result in suboptimal muscle performance.

Objective
To identify the correlation between change in skeletal muscle mass (SMM) and diaphragmatic thickness and excursion in chronic obstructive pulmonary disease (COPD) patients.

Patients and methods
Cross sectional study, comprising of 44 stable COPD patients underwent transthoracic ultrasound assessment of diaphragmatic thickness and excursion, SMM estimation using body sense smart scale machine, and ultrasound estimation of biceps and triceps thickness and then the results were correlated.

Results
Diaphragmatic thickness and excursion had significant positive correlations with corresponding SMM, biceps thickness and triceps thickness as well as significant negative correlation with smoking pack/years and number of exacerbations in the last year.

Conclusions
Low SMM is a relevant comorbidity in COPD patients and associated with affected diaphragmatic function as regard thickness and excursion. High Smoking pack/years and high number of exacerbations are significant independent factors that decrease diaphragmatic thickness and excursion, and increased the likelihood of having low SMM. Change in SMM and diaphragmatic function negatively affect the health status represented in the number of exacerbations in the last year.
Silent zone detection in asthma and its relation to T2 inflammation
Authors: Samaha Hala , Elhassan Dalia , Tayeb Afnan 
Published: January 2024

Abstract

Objective
Study objectives are to detect small airways disease in asthma and to study T2 inflammatory markers (eosinophil count, IgE, phenotyping) in association with small airways disease.

Methods and patients
The retrospective study at OPC at Al Qassimi Hospital of EHS included 83 patients with confirmed asthma diagnosis. Based on their ACT scores, patients were divided into two groups. An assessment of demographic data, blood eosinophils, fractional exhaled nitric oxide, IgE, PFE25-75, FEV1%, R5-20, X5 and AX was carried out. Analyzing and collecting data.

Results
In this study, a significant correlation was found between the R5-20, X5, and AX values of the small airway and the asthma control test. Uncontrolled asthmatics had a higher fractional exhaled nitric oxide level and blood eosinophilic count.

Conclusion
In asthma management, small airways clinical impact should be investigated actively. Impulse oscillometry is an excellent marker for asthma control.