bluuebunny/crossref_metadata_2025_split huggingface dataset:
Measuring White Dwarf Variability from Sparsely Sampled Gaia DR3 Multi-epoch Photometry
Authors: Steen Maya , Hermes J. J. , Guidry Joseph A. , Paiva Annabelle , Farihi Jay , Heintz Tyler M. , Ewing Brison B. , Berry Nathaniel 
Published: May 2024

Abstract
White dwarf stars are ubiquitous in the Galaxy, and are essential to understanding stellar evolution. While most white dwarfs are photometrically stable and reliable flux standards, some can be highly variable, which can reveal unique details about the endpoints of low-mass stellar evolution. In this study, we characterize a sample of high-confidence white dwarfs with multi-epoch photometry from Gaia Data Release 3. We compare these Gaia light curves with light curves from the Zwicky Transiting Facility and the Transiting Exoplanet Survey Satellite to see when Gaia data independently can accurately measure periods of variability. From this sample, 105 objects have variability periods measured from the Gaia light curves independently, with periods as long as roughly 9.5 days and as short as 256.2 s (roughly 4 minutes), including seven systems with periods shorter than 1000 s. We discover 86 new objects from the 105 target samples, including pulsating, spotted, and binary white dwarfs, and even a new 68.4 minute eclipsing cataclysmic variable. The median amplitude of the absolute photometric variability we confirm from Gaia independently is 1.4%, demonstrating that Gaia epoch photometry is capable of measuring short-term periods even when observations are sparse.
Anisotropy of Density Fluctuations in the Solar Wind at 1 au
Authors: Wang Jiaming , Chhiber Rohit , Roy Sohom , Cuesta Manuel E. , Pecora Francesco , Yang Yan , Fu Xiangrong , Li Hui , Matthaeus William H. 
Published: May 2024

Abstract
A well-known property of solar wind plasma turbulence is the observed anisotropy of the autocorrelations, or equivalently the spectra, of velocity and magnetic field fluctuations. Here we explore the related but apparently not well-studied issue of the anisotropy of plasma density fluctuations in the energy-containing and inertial ranges of solar wind turbulence. Using 10 yr (1998–2008) of in situ data from the Advanced Composition Explorer mission, we find that for all but the fastest wind category, the density correlation scale is slightly larger in directions quasi-parallel to the large-scale mean magnetic field as compared to quasi-perpendicular directions. The correlation scale in fast wind is consistent with isotropic. The anisotropy as a function of the level of correlation is also explored. We find at small correlation levels, i.e., at energy-containing scales and larger, the density fluctuations are close to isotropy for fast wind, and slightly favor more rapid decorrelation in perpendicular directions for slow and medium winds. At relatively smaller (inertial range) scales where the correlation values are larger, the sense of anisotropy is reversed in all speed ranges, implying a more “slablike” structure, especially prominent in the fast wind samples. We contrast this finding with published results on velocity and magnetic field correlations.
The Low-mass Stellar Initial Mass Function in Nearby Ultrafaint Dwarf Galaxies
Authors: Filion Carrie , Wyse Rosemary F. G. , Richstein Hannah , Kallivayalil Nitya , van der Marel Roeland P. , Sacchi Elena 
Published: May 2024

Abstract
The stellar initial mass function (IMF) describes the distribution of stellar masses that form in a given star formation event. The long main-sequence lifetimes of low-mass stars mean that the IMF in this regime (below ∼ 1 M
⊙) can be investigated through star counts. Ultrafaint dwarf galaxies are low-luminosity systems with ancient, metal-poor stellar populations. We investigate the low-mass IMF in four such systems (Reticulum II, Ursa Major II, Triangulum II, and Segue 1), using Hubble Space Telescope imaging data that reaches to ≲ 0.2 M
⊙ in each galaxy. The analysis techniques that we adopt depend on the number of low-mass stars in each sample. We use Kolmogorov–Smirnov tests for all four galaxies to determine whether their observed apparent magnitude distributions can reject a given combination of IMF parameters and binary fraction for the underlying population. We forward model 1000 synthetic populations for each combination of parameters, and reject those parameters only if each of the 1000 realizations reject the null hypothesis. We find that all four galaxies reject a variety of IMFs, and the IMFs that they cannot reject include those that are identical, or similar, to that of the stellar populations of the Milky Way. We determine the best-fit parameter values for the IMF in Reticulum II and Ursa Major II and find that the IMF in Reticulum II is generally consistent with that of the Milky Way, while the IMF in Ursa Major II is more bottom heavy. The interpretation of the results for Ursa Major II is complicated by possible contamination from two known background galaxy clusters.
Discovery and Characterization of Two Ultrafaint Dwarfs outside the Halo of the Milky Way: Leo M and Leo K
Authors: McQuinn Kristen. B. W. , Mao Yao-Yuan , Tollerud Erik J. , Cohen Roger E. , Shih David , Buckley Matthew R. , Dolphin Andrew E. 
Published: May 2024

Abstract
We report the discovery of two ultrafaint dwarf galaxies, Leo M and Leo K, that lie outside the halo of the Milky Way (MW). Using Hubble Space Telescope imaging of the resolved stars, we create color–magnitude diagrams reaching the oldest main-sequence turnoff of each system and (i) fit for structural parameters of the galaxies; (ii) measure their distances using the luminosity of the horizontal branch stars; (iii) estimate integrated magnitudes and stellar masses; and (iv) reconstruct the star formation histories. Based on their location in the Local Group, neither galaxy is currently within the halo of the MW although Leo K is located ∼26 kpc from the low-mass galaxy Leo T and these two systems may have had a past interaction. Leo M and Leo K have stellar masses of

1.8

−
0.2

+
0.3

×

10

4

M
⊙ and 1.2 ± 0.2 × 104
M
⊙, and were quenched

10.6

−
1.1

+
2.2

Gyr and

12.8

−
4.2

+
0.1

Gyr ago, respectively. Given that the galaxies are at farther distances from the MW, it is unlikely that they were quenched by environmental processing. Instead, given their low stellar masses, their early quenching timescales are consistent with the scenario that a combination of reionization and stellar feedback shut down star formation at early cosmic times.
Direct Imaging Detection of the Protoplanet AB Aur b at Wavelengths Covering Paβ
Authors: Currie Thayne 
Published: May 2024

Abstract
Recently, Biddle et al. claimed a non-detection of the protoplanet AB Aurigae b in Keck/NIRC2 Paβ imaging. I reprocess these newly public data and compare them to data from the extreme AO platform (SCExAO/CHARIS) used to discover AB Aur b. AB Aur b is decisively imaged with SCExAO/CHARIS at wavelengths covering Paβ. The Biddle et al. non detection of AB Aur b results from a far poorer image quality that is non competitive with SCExAO/CHARIS. Their contrast limits and thus constraints on accretion are overestimated due to an inaccurate AB Aur b source model. Irrespective of image quality, single-band Paβ imaging is ill suited to conclusively identify accretion onto AB Aur b. Instead, high-resolution Hα spectroscopy may provide accretion signatures. Aside from PDS 70, AB Aurigae remains the system with the strongest evidence for having a directly imaged protoplanet.
Unfolding the European Commission’s storytelling on ethical trade relations with Vietnam
Authors: Nessel Camille , Verhaeghe Elke 
Published: May 2024

Cet article déconstruit le discours de la Commission européenne sur les relations commerciales entre l’Union européenne (UE) et le Vietnam. L’analyse se concentre en particulier sur les deux accords commerciaux les plus récents, qui partagent un récit commun au travers duquel l’UE se dépeint comme une force bienveillante. L’UE et le Vietnam, les deux personnages principaux de ce récit, s’efforcent de faire du commerce bilatéral « une force au service du bien », vivent des moments d’héroïsme mais sont aussi parfois, de manière éphémère, les victimes de ces luttes pour vaincre les forces du mal sur la voie du commerce éthique. L’analyse montre comment la Commission réitère essentiellement le récit du « développement » dont l’UE est le protagoniste principal, façonnant le monde selon ses propres valeurs. Ainsi, les problèmes rencontrés par sa politique commerciale doivent être résolus par le « développement » du Vietnam qui repose lui-même sur les outils au bienfondé supposément universel des politiques européennes. Ce récit laisse ainsi dans l’ombre les particularités des défis qui entravent la politique commerciale de l’Union européenne. Il ne permet pas d’identifier les véritables causes des obstacles rencontrés et détourne l’attention des incohérences et des conflits.
La situation en psychanalyse
Authors: Defrenet Bernard 
Published: May 2024

Toute réflexion portée sur la situation de la psychanalyse interpelle la filiation analytique de chacun et convoque depuis une chaîne de transmission transférentielle le contrat narcissique qui le lie à Freud. Le conflit entre Jung et Freud, dont il est difficile de démêler les enjeux théoriques des enjeux transférentiels, conduira ce dernier, en 1914, à une nouvelle étape de l’élaboration conceptuelle du narcissisme. Élaboration marquée par cette conflictualité et qui aboutit peu après à la reconnaissance de la compulsion de répétition. Depuis les vicissitudes conceptuelles du narcissisme, la question de la situation de la psychanalyse avance dans le temps, pour une actualité toujours plus brûlante et entropique. Elle porte la marque même de cette atemporalité de l’inconscient, la compulsion de répétition. Elle interroge essentiellement notre investissement de la psychanalyse tout en relançant sans cesse son potentiel intrinsèque de division depuis la place attribuée au sexuel infantile, depuis toujours en menace d’être destitué.
Avoir peur
Authors: Laurent Pierrette 
Published: May 2024

Nous prenons, peu à peu et douloureusement, conscience du bouleversement qui s’annonce dans notre monde. Que deviennent alors les différents espaces psychiques quand l’angoisse interne est due à la réalité externe, quand ce que nous éprouvons est l’angoisse du réel, à différencier de l’angoisse du pulsionnel, selon Freud ? Comment considérer le travail psychique exigé par la rencontre de chacun avec ce nouvel environnement, cette nouvelle réalité externe ? En m’appuyant sur les rêves recueillis par Charlotte Béradt de 1933 à 1939, lors de l’installation du nazisme en Allemagne, et ceux relatés par Jean Cayrol à son retour du camp de Mauthausen, je vais essayer de rendre compte de ce qu’apportent les travaux de Piera Aulagnier, Geneviève Haag et René Kaës, à l’analyse de ces rêves.
Les avortements en délai dépassé
Authors: Mathieu Marie , Avarguez Sophie 
Published: May 2024

À partir de deux enquêtes qualitatives mêlant des entretiens de femmes ayant avorté à l’étranger et des observations de parcours de femmes voulant interrompre une grossesse au-delà du seuil légal français, cet article révèle le travail abortif réalisé par les femmes pour obtenir un arrêt de grossesse au-delà du seuil inscrit dans la loi, dans ses différentes séquences et dimensions : le travail d’information sur les cadres légaux de l’avortement en France et à l’étranger, les lieux et les conditions de leur prise en charge ; le travail de collecte de l’argent qu’implique ce type d’intervention et le voyage qu’il suppose ; le travail cognitif qu’elles assurent et le travail émotionnel auquel elles ne peuvent se soustraire. En dévoilant les expériences peu connues d’avortement transfrontalier, cet article donne à voir les mécanismes, acteur·rices et outils facilitant ou entravant l’autonomie procréative des femmes en France.
Polyvalence du traducteur-interprète salarié : valeur ajoutée ou spécialisation dissipée ? (témoignages professionnels et perspectives académiques)
Authors: Boukhemis Leila 
Published: May 2024

La présente étude met en exergue un fait professionnel inhérent au statut du traducteur-interprète salarié, il s’agit de la polyvalence des activités exécutées en dehors de la prestation linguistique. Notre problématique gravite autour de la nature même de la polyvalence, est-elle une valeur ajoutée pour le professionnel salarié ou bien menace-t-elle sa spécialisation linguistique et thématique ? Ainsi, comment pourrait-on préparer l’étudiant à la polyvalence des tâches pour un futur emploi ? Cela nécessite-il des outils et des objectifs d’apprentissage précis ? Pour répondre à ces questions, nous avons collecté les types de tâches supplémentaires exécutées par l’employé salarié, sur la base d’une expérience personnelle dans une entreprise économique. Après recensement et analyse descriptive des données au cas par cas, nous avons pu conclure que la polyvalence est surtout constructive, car elle permet d’acquérir de multiples compétences. Aussi, les institutions académiques ne sauraient rester en marge de ces réalités professionnelles et pourraient/devraient contribuer à la formation de traducteurs-interprètes polyvalents, notamment sur le plan ergonomique et psychopédagogique. Pour ce faire, l’actualisation des contenus des unités transversales et des unités de découvertes, récemment intégrée dans le programme de formation des traducteurs-interprètes sur la base des besoins du marché (local et international) est très à propos. L’intégration des exercices de simulation dans les salles de classe est à ce propos, très avantageuse car elle met l’étudiant dans un contexte professionnel virtuel, dont l’objectif ultime est de réduire l’écart traditionnellement connu entre le milieu académique et le marché du travail.
Using Network Pharmacology and Molecular Docking Tools to Investigate the Potential Mechanism of Ephedra-Gypsum in the Treatment of Respiratory Diseases
Authors: Huang Can , Yuan Ling , Niu Yang , Yang Ya-Ting , Yang Yi-Fan , Nan Yi , Dou Hong-Li , Japhet Joanna 
Published: May 2024

Objective:
The objective of this study was to investigate the potential mechanisms of ephedra-gypsum in the treatment of respiratory diseases (RDs) using network pharmacology and molecular docking techniques.

Materials and Methods:
The TCMSP and UniProt databases were used to mine the active components and targets of ephedra-gypsum, and the targets of RD were screened using the Online Mendelian Inheritance in Man (OMIM) and GeneCards databases. The protein-protein interaction network graph was created using the drug-disease intersection targets in the STRING database. The network diagram was analyzed using Cytoscape 3.9.1's topology function. The gene ontology (GO) and KEGG enrichment analyses were performed using the DAVID platform. Molecular docking bioactivity validation of the main active components and core targets was performed using AutoDock and PyMOL software.

Results:
Twenty-four compounds were screened, and 113 drug-disease targets overlapped. In total, 358 biological processes, 67 molecular functions, 38 cellular components of GO, and 139 pathways were identified. Molecular docking analysis demonstrated the strong binding ability of tumor protein 53 (TP53)-luteolin.

Conclusion:
The core components of ephedra-gypsum, such as quercetin, luteolin, kaempferol, and CaSO4·2H2O, act on key targets, such as tumor necrosis factor (TNF), interleukin-6 (IL-6), TP53, and IL-1 β through cytokine-mediated signaling pathways, inflammatory responses, cell proliferation, and apoptosis. This could be useful for the treatment of RD.
Distribution of Non-thyroid Neck Swellings according to Tissue of Origin and Their Radio-pathological Correlation
Authors: Tiwari Himani , Patel Bhupesh , Doria Grishma , Mehta Rina Girish , Chaturvedi Chandrashekher , Damor Paresh Kumar 
Published: May 2024

Abstract

Introduction:
Neck swellings are commonly found and can be presented as simple benign to malignant. Due to extensive differential diagnosis and similar presentation, the evaluation of neck swellings is more challenging. Most of the cases can be diagnosed after a detailed history and clinical examination of the head and neck, but the final diagnosis will be achieved by histopathological examination.

Materials and Methods:
The study was conducted from February 2020 to February 2023 on the basis of retrospective and prospective sampling. This study included all the patients with neck swellings, excluding thyroid, who had undergone excisional or incisional biopsy. The present study was carried out on 74 patients with non-thyroid neck swellings, which were classified five into main headings, i.e. lymph node swelling, salivary gland swellings, adipose tissue, neural tissue and skin and soft-tissue swellings as miscellaneous. Data were collected from patient records for retrospective sampling and radiological investigation, and ultrasonography (USG) and excisional or incisional biopsy were done for prospective sampling. A radiological and pathological correlation was analysed as benign and malignant.

Results:
Out of the 74 patients, n = 60, 81% were benign and n = 14, 19% were malignant. The most common swelling according to the tissue of origin was lymph node (n = 31, 41.9%) followed by salivary gland n = 15 (20.3%), adipose tissue (n = 7, 9.5%) and neural tissue (n = 6, 8.1%) origin. Other soft-tissue swellings were 20.3%. The overall sensitivity, specificity, positive predictive value, negative predictive value and radiological (USG) diagnosis accuracy to differentiate between benign and malignant are very similar to gold standard histopathological examination.

Conclusion:
Lymph node swellings were the most common swelling involving the neck region. USG diagnosis is highly sensitive for diagnosing malignant swellings but less good at confirming benign swellings. Radiological diagnosis is not a substitute for conventional surgical histopathology but is regarded as a precious complement in diagnosis. Newer diagnostic techniques are required to be infallible and accurate for further management.
Upper bullous rhegmatogenous retinal detachment
Authors: Eissa Ahmed M. , Abouelkheir Hossam Y. , El-Kannishy Amr M. , El-Wehedy Ahmad S. , Abd El-Wahab Amal A. 
Published: May 2024

Purpose
To find a standard surgical plan for management of upper bullous retinal detachment in one step.

Patients and methods
This was a comparative study on 50 patients who were divided randomly between two study groups, with each containing 25 patients: one group was treated by scleral buckling and the other was treated by 23-G vitrectomy using gas tamponade (air and sulfur hexafluoride).

Results
A total of 50 cases with upper bullous retinal detachment were chosen. The cases were randomly divided into two groups: one of them underwent scleral buckling, whereas the others underwent par plana vitrectomy using gaseous tamponade (air and sulfur hexafluoride); each group consisted of 25 patients. The final success rate was the same, with a statistically insignificant higher incidence of delayed absorption of subretinal fluid and also statistically low significance higher recurrence with scleral buckling. Choroidal detachment happened only with vitrectomy, whereas suprachoroidal hemorrhage occurred solely with scleral buckling. Epiretinal membrane and advancement of cataract occurred with vitrectomy, whereas myopic shift occurred with scleral buckling.

Conclusions
The results of our study showed that there is no perfect surgery to be used as a final standard management, and each procedure has its benefits and drawbacks. The final decision is left to the surgeon to decide according to personal experience and the case scenario.
Obstructive Jaundice with skin involvement - An unusual presentation of Myeloid Sarcoma
Authors: Jeji Pukhraj S. , Patnaik Swarup K. , Behera Manas K. , Narayan Jimmy , Sahu Manoj K. , Mishra Debakanta , Singh Ayaskanta , Pati Girish K. 
Published: May 2024

ABSTRACT
Biliary obstruction secondary to malignancy is a common clinical problem. Rarely, biliary obstruction is due to leukemia, and obstructive jaundice in these patients usually presents late in the course of the disease. We present a rare case of a patient who presented with fever, jaundice, and pruritus with multiple nodular swellings in the left shoulder, left thigh, and lower back. Magnetic resonance cholangiopancreatography (MRCP) revealed periampullary mass lesion causing dilated common bile duct (CBD) and intrahepatic bile ducts; hence, endoscopic retrograde cholangiography with plastic stenting was done. Biopsy from the shoulder lesion revealed a mesenchymal tumor, and immunohistochemistry (IHC) confirmed the lesion as myeloid sarcoma. Myeloid sarcoma is an extramedullary tumor, a subtype of acute myeloid leukemia, and presentation as biliary lesions with multiple anatomical sites is very rare. The patient was started on chemotherapy after the normalization of bilirubin. The patient showed improvement of skin lesions and normalization of liver function test (LFT) after 3 weeks of chemotherapy.
Myelomatous pleural effusion developing after autologous stem cell transplantation in a patient with multiple myeloma: A rare case
Authors: Ak Müzeyyen Aslaner , Barut Figen 
Published: May 2024

ABSTRACT
Myelomatous pleural effusion (MPE) is a very rare condition with a poor prognosis. In our case of multiple myeloma (MM) with early recurrence presenting with a MPE, management of the treatment is discussed together with the case presentation. A 35 year old female patient with a diagnosis of lambda light chain MM presented with complaints of dyspnea and pain in the left shoulder 2 months after autologous transplantation. On physical examination, respiratory sounds were decreased in the lower lobe of the left lung and there was dullness. Pleural effusion and plasmacytoma, more prominent on the left, were detected on chest X ray and thorax computed tomography (CT). The pleural fluid collected during therapeutic thoracentesis was examined by flow cytometry, cytology, and peripheral smear examination and as a result, the patient was considered to have early recurrence after autologous transplantation, DRd chemotherapy was immediately started, and clinical and radiological improvement was observed. Pleural effusion developing in patients with MM should be evaluated in terms of MPE. In the presence of MPE, the duration of response to treatment is short, thus effective and dynamic treatment methods for bridging should be used before referral of the patients to clinical trials and hematopoietic stem cell transplantation.