bluuebunny/crossref_metadata_2025_split huggingface dataset:
SN 2014C: A Metamorphic Supernova Exploded in the Intricate and Hydrogen-rich Surroundings
Authors: Zhai Qian , Zhang Jujia , Lin Weili , Mazzali Paolo , Pian Elena , Benetti Stefano , Tomasella Lina , Liu Jialian , Li Liping 
Published: January 2025

Abstract
We present photometric and spectroscopic observations of supernova (SN) SN 2014C, primarily emphasizing the initial month after the explosion at approximately daily intervals. During this time, it was classified as a Type Ib SN exhibiting a notably higher peak luminosity (L
peak ≈ 4.3 × 1042 erg s−1), a faster rise to brightness (t
rise ≈ 11.6 days), and a more gradual dimming (

Δ

m

15

V

≈
0.48

mag) compared to typical Type Ib SNe. Analysis of the velocity evolution over the first ~20 days after the explosion supports the view that the absorption near 6200 Å is due to high-velocity Hα in the outer layers of the ejecta, indicating the presence of a small amount of hydrogen in the envelope of the progenitor before the explosion. Assuming that the peak luminosity is entirely attributed to radioactive decay, we estimate that 0.14 M
⊙ of 56Ni was synthesized in the explosion. However, this amount of nickel could no longer maintain observed brightness approximately 10 days after peak luminosity, suggesting additional energy sources beyond radioactive decay. This supplementary energy likely originates from interaction with the circumstellar medium (CSM). Consequently, the timing of the SN−CSM interaction in SN 2014C may occur much earlier than the emergence of Type IIn−like features during the nebular phase.
Constraining Anisotropic Diffusion between Geminga and Earth with the Cosmic-Ray Electron and Positron Spectrum
Authors: Xia Junji , Bi Xiaojun , Fang Kun , Liu Siming 
Published: January 2025

Abstract
The gamma-ray halo around Geminga indicates significant suppression of cosmic-ray diffusion. One possible explanation for this phenomenon is the projection effect of slow diffusion perpendicular to the mean magnetic field (characterized by the diffusion coefficient D
⊥) within an anisotropic diffusion framework. In this scenario, the diffusion coefficient parallel to the mean field (D
∥) can still be large, enabling electrons and positrons (e
±) produced by Geminga to efficiently travel to Earth along the magnetic field lines, possibly resulting in a detectable e
± flux. In this work, we first determine the basic parameters of the anisotropic model using the morphology and spectral measurements of the Geminga halo and then predict the flux of e
± produced by Geminga at the location of Earth. We find that the e
− + e
+ spectrum of DAMPE can give crucial constraint on the anisotropic diffusion model: to ensure that the predicted spectrum does not exceed the measurements, the Alfvén Mach number of the turbulent magnetic field (M

A
) should not be less than 0.75, corresponding to D
∥/D
⊥ ≲ 3 given that

D

⊥

=

D

∥

M

A

4

. This implies that a significant suppression of D
∥ relative to the average value in the Galaxy may still be necessary. Furthermore, we find that under the anisotropic diffusion model, Geminga can produce a very sharp feature around 1 TeV in the e
− + e
+ spectrum, which could naturally explain the peculiar 1.4 TeV excess tentatively observed by DAMPE.
PKS 2332–017 and PMN J1916–1519: Candidate Blazar Counterparts to Two High-energy Neutrino Events
Authors: Ji Shunhao , Wang Zhongxiang , Zheng Dong 
Published: January 2025

Abstract
We report our counterpart identification study for two high-energy neutrino events IC-130127A and IC-131204A listed in the IceCube Event Catalog of Alert Tracks. These two events belong to Gold alerts, which have a significant probability of being of astrophysical origin. Within the events’ 90% positional uncertainty regions, we, respectively, find PKS 2332–017 and PMN J1916–1519. The first source is a flat-spectrum radio quasar at redshift z = 1.18, and the second is a blazar of an uncertain type with photometric z = 0.968. As they correspondingly had a γ-ray flare temporally coincident with the arrival times of IC-130127A and IC-131204A, we identify them as the respective neutrino emitters. Detailed analysis of the γ-ray data for the two blazars, obtained with the Large Area Telescope onboard the Fermi Gamma-ray Space Telescope, is conducted. The two flares, respectively, from PKS 2332–017 and PMN J1916–1519 lasted ~4 yr and ~4 months and showed possible emission hardening by containing high-energy ~2–10 GeV photons in the emissions. Accompanying the flare of PKS 2332–017, optical and mid-infrared brightening variations were also observed. We discuss the properties of the two sources and compare the properties with those of the previously reported (candidate) neutrino-emitting blazars.
Oxidizing ExoCAM: Introducing the Radiative Effects of Oxygen and Ozone into the ExoCAM General Circulation Model
Authors: Deitrick Russell , Goldblatt Colin , Wolf Eric T. , Robinson Tyler D. 
Published: January 2025

Abstract
Oxygen and ozone are two of the most important gases in Earth’s atmosphere. These arose as a result of photosynthesis and appeared prominently around 2.3–2.4 billion yr ago. For exoplanets, these species have been proposed both as remote biosignatures and antibiosignatures, depending on the abundances and astrophysical context. ExoCAM, an extension of the Community Earth System Model for deep paleoclimate and exoplanets, has previously been limited to anoxic atmospheres. This work presents a substantial update to the radiative transfer in ExoCAM to include the effects of oxygen and ozone. We describe the implementation of line lists, empirical cross sections, Rayleigh scattering, and collision-induced absorption and test the resulting framework in 1D and 3D for the modern Earth atmosphere. We quantify the changes in flux, temperatures, and circulation due to the two gases.
Discours aux Tupiniquins
Authors: Pedrosa Mário 
Published: January 2025

Prenant l’attitude d’un Persan à Paris, le grand critique d’art brésilien Mário Pedrosa écrit en 1975 à ses compatriotes, à partir de son exil parisien. Ce texte, son adieu à la critique d’art, est aussi un des plus profonds pour comprendre son point de vue, finalement très critique, sur les développements de l’art moderne occidental et son espoir d’un art nouveau, fruit de ce qu’il appelle encore le tiers-monde. S’il emploie le mot postmoderne, ce n’est pas dans le sens de Jean-François Lyotard, et pourtant quelques années à peine avant La Condition postmoderne (1979), Pedrosa affirme que le moderne et le primitif, le savoir savant et le savoir populaire ont cessé de s’opposer.
« Du nouveau ! Du nouveau ! » L’empsychographe : une invention au service du renouvellement du spectacle à Nantes en 1899
Authors: Créhalet Frédéric 
Published: January 2025

L’émergence de la culture de masse à la Belle Époque s’accompagne d’une surenchère dans le spectaculaire et de la recherche continuelle de la nouveauté, de manière à satisfaire un public toujours plus nombreux. Ce phénomène se constate aussi bien sur les vastes scènes des théâtres et des music-halls que sur celles, plus intimes, des cabarets artistiques et des scènes privées, à Paris comme en province. Il conduit la société artistique et littéraire nantaise le Clou, qui se posait en rivale du Chat Noir parisien à partir de 1887, à monter un spectacle complètement nouveau grâce à l’invention de l’empsychographe. Cet appareil permet la projection sur un écran d’un spectacle de pantomime, au moyen de miroirs reflétant une scène vivement éclairée à l’électricité. Se voulant innovant, ce spectacle cherche à dépasser le théâtre d’ombres, les ombres chinoises et même le cinématographe. Il se propose « d’obtenir des effets entièrement nouveaux au point de vue du théâtre », tant dans l’éclairage que dans la superposition d’un décor dessiné et de l’image d’un spectacle vivant. Sans lendemain, cette invention est symptomatique du goût pour le spectacle et pour l’innovation technique qui rassemble les élites républicaines d’une grande ville industrielle et commerciale.
Le parcours d’une statue équestre
Authors: Correa Sílvio Marcus de Souza 
Published: January 2025

Les déboulonnages de statues et leur retrait de l’espace public s’inscrivent dans une histoire postcoloniale qui illustre de façon spectaculaire les tensions mémorielles dans certaines sociétés par rapport à leur passé colonial. Sous un angle mémoriel conflictuel, on peut s’interroger sur les conditions préalables à l’avènement d’une conscience « postcoloniale » qui remet en question certains monuments de la période coloniale dans l’espace public urbain. L’objet de cet article est de montrer que le déboulonnage du Reiterdenkmal à Windhoek, capitale de la Namibie, s’inscrit dans une logique de dépatrimonialisation. En outre, depuis son retrait, un autre monument, la statue de Sam Nujoma, « père » fondateur de la Southwest Africa People’s Organization (SWAPO) et premier président de la Namibie (1990-2005) a été érigée à sa place originelle. Une méthode d’analyse qui tient compte de cette dépatrimonialisation est proposée, basée sur les documents des Archives nationales de la Namibie et sur la presse namibienne, ainsi que sur l’analyse iconographique d’une « statue qui bouge » puisqu’elle a été déplacée plusieurs fois lors de son parcours centenaire.
Pourquoi étudier les religions mortes ?
Authors: Scheid John 
Published: January 2025

L’utilité historique et culturelle de l’histoire ancienne et, peut-être davantage encore, celle des religions « païennes » de l’Antiquité sont souvent mises en question. Ce qui est surtout le cas pour une religion comme celle des Grecs et des Romains, qui n’a pas, à première vue, de lien avec le judaïsme et le christianisme ainsi qu’avec le monde oriental dans lequel ceux-ci se sont formés. Or notre culture est un héritage de la culture gréco-romaine. Comment imaginer un rapport avec notre propre culture et ses œuvres sans une connaissance du passé gréco-romain ? L’étude de la religion des Grecs et des Romains n’a-t-elle, par exemple, rien à nous apprendre ? La religion qui prédomine actuellement dans le monde occidental définit-elle aussi la nature de toute religion dans le passé, en éliminant d’office les « paganismes » ? Quand l’étude historique des sources directes, c’est-à-dire des inscriptions et des structures archéologiques, révèle que le ritualisme était omniprésent et avait un sens, faut-il arrêter l’étude parce que « tout cela est faux » ? Récusant ce mépris, l’approche empirique des religions préchrétiennes peut révéler des liens entre les religions d’aujourd’hui et celles des Romains ou des Grecs, inviter à respecter les cultures différentes au sein de notre société, et surtout avertir contre l’intolérance.
Violence et histoire dans les séries télévisées : Introduction
Authors: Allouche Sylvie 
Published: January 2025

À partir de l’analyse de quatre séries, le dossier s’intéresse à la manière dont la violence dans et de l’histoire y est mise en scène à travers différentes figures qui représentent diverses populations ayant subi des violences physiques ou sociales, aggravées en violence symbolique par le fait que les versions dominantes de l'histoire tendent à ignorer ou minorer leur rôle ou les souffrances et injustices qu'elles ont subies : femmes impliquées dans le tumulte de l’histoire récente de la France (Isabelle Veyrat-Masson sur Maria Vandamme et Sonia Suvélor sur Les Combattantes), victimes de l’histoire et de l’ordre social américains (Martin Shuster sur Yellowstone), civils Hutus réfugiés au Congo (Sylvie Allouche sur Black Earth Rising). Nous espérons ainsi proposer aux lecteurs et lectrices une approche originale sur la façon dont les séries parlent des violences de l’histoire, et plus généralement leur permettre de mieux comprendre les enjeux sociaux et politiques des séries historiques.
Données probantes et éducation en France : changer les pratiques, pourquoi, comment et quelles précautions prendre ?
Authors: Chkair Sihame 
Published: January 2025

Cet article explore l’évolution de l’éducation fondée sur des données probantes (EBE) en France. Ce concept, introduit dans l’éducation au début des années 2000 et issu du domaine médical, vise à intégrer les résultats de la recherche scientifique dans les pratiques éducatives pour améliorer leur efficacité.L’autrice met en lumière l’essor de la culture de l’évaluation, portée par des cadres législatifs comme la LOLF (2001) et le Conseil de l’évaluation de l’école (2019), qui inscrivent les objectifs éducatifs dans une logique de responsabilisation (« accountability ») et de résultats mesurables. Ces démarches reflètent une adaptation du Nouveau Management Public (NMP) dans le domaine scolaire, renforçant les expérimentations basées sur des preuves, comme le dédoublement des classes de CP en zones REP. Cependant, l’article souligne la nécessité de réfléchir à l’utilisation des données probantes en éducation. L’autrice questionne leur définition, leur pertinence et leur portée, tout en examinant les possibles mésusages. L’article analyse si la simple existence de preuves scientifiques est suffisante pour garantir l’adoption de nouvelles pratiques pédagogiques, et invite à prendre des précautions pour éviter une application inadaptée ou superficielle en classe.
Novel biallelic MCMDC2 variants were associated with meiotic arrest and nonobstructive azoospermia
Authors: Bai Hao-Wei , Li Na , Zhang Yu-Xiang , Luo Jia-Qiang , Tian Ru-Hui , Li Peng , Huang Yu-Hua , Bai Fu-Rong , Deng Cun-Zhong , Zhao Fu-Jun , Mo Ren , Chi Ning , Zhou Yu-Chuan , Li Zheng , Yao Chen-Cheng , Zhi Er-Lei 
Published: January 2025

Abstract
Nonobstructive azoospermia (NOA), one of the most severe types of male infertility, etiology often remains unclear in most cases. Therefore, this study aimed to detect four biallelic detrimental variants (0.5%) in the minichromosome maintenance domain containing 2 (MCMDC2) genes in 768 NOA patients by whole-exome sequencing (WES). Hematoxylin and eosin (H&E) demonstrated that MCMDC2 deleterious variants caused meiotic arrest in three patients (c.1360G>T, c.1956G>T, and c.685C>T) and hypospermatogenesis in one patient (c.94G>T), as further confirmed through immunofluorescence (IF) staining. The single-cell RNA sequencing data indicated that MCMDC2 was substantially expressed during spermatogenesis. The variants were confirmed as deleterious and responsible for patient infertility through bioinformatics and in vitro experimental analyses. The results revealed four MCMDC2 variants related to NOA, which contributes to the current perception of the function of MCMDC2 in male fertility and presents new perspectives on the genetic etiology of NOA.
Amorphous Extracellular Eosinophilic Material – The Diagnostic Challenge in Histopathology
Authors: Sivakumar P. , Rajkumar P. , Sridevi S. K. , Priyadharshini L. , Elancheran M. 
Published: January 2025

Abstract
Amyloidosis encompasses a diverse group of conditions characterized by the extracellular accumulation of misfolded, insoluble proteinaceous material with a cross-beta-pleated sheet structure, leading to organ damage. Due to its varied origins and manifestations, different diagnostic tools are required for accurate diagnosis. A definitive diagnosis is achieved through biopsy, revealing amyloid deposits in the affected tissue. When stained with hematoxylin and eosin, amyloid material appears as amorphous eosinophilic acellular deposits. These morphological features are shared with other substances such as collagen, fibrin, plasma, hyaline globules, hyalinization, and necrosis, posing a diagnostic challenge for pathologists. However, morphology, surrounding tissue morphology, and special stains can differentiate between amyloid and amyloid-like material. This case series of six cases highlights the appropriate staining techniques for differentiating amyloid from amyloid-like material in histopathology.
Assessing the Role of Emergency Physicians in Medical Clearance: Predictors of Diagnosing Psychiatric Illness in the Emergency Department – A Retrospective Cross-sectional Study
Authors: Almamari Ibrahim Khamis Abdullah , Hazra Darpanarayan , Al-Alawi Awatif K. Alsarrai 
Published: January 2025

Abstract

Background:
Medical clearance for patients presenting with psychiatric-like illnesses has been a topic of debate for years. This study aimed to determine the predictors of diagnosing psychiatric illness in the emergency department (ED).

Methods:
The study included patients aged ≥13 years presenting to the adult ED with psychiatric-like illness over 1 year (January 01, 2019–December 31, 2019). Medical charts were reviewed, and multiple variables were coded and analyzed.

Results:
Our study included 361 patients, constituting 0.89% of the total ED visits. The majority (335 patients, 92.8%) were diagnosed with primary psychiatric illnesses, while 26 patients (7.2%) had underlying medical conditions contributing to their symptoms. Bivariate and multivariate logistic regression analysis identified the predictors for initial psychiatric diagnoses, including abnormal behavior (odd’s ratio [OR]: 8.29; 95% confidence interval [CI]: 2.04–33.65; P < 0.01) and substance abuse (adjusted OR: 17.27; 95% CI: 3.88–76.88; P < 0.01). Notable findings involved family history or previous psychiatric illness (OR: 2.32; 95% CI: 0.59–6.09; P < 0.01), absence of medical comorbidities (adjusted OR: 2.47; 95% CI: 1.05–5.86; P < 0.01), and no new medication initiation before illness (OR: 6.43; 95% CI: 1.52–27.18; P < 0.01), normal sensorium (adjusted OR: 2.84; 95% CI: 0.81–10.00; P < 0.01) and intact orientation (adjusted OR: 6.73; 95% CI: 1.24–36.42; P < 0.01) demonstrated statistically significant predictors of an initial psychiatric diagnosis in the ED.

Conclusion:
Significant predictors of initial psychiatric illness included abnormal behavior, substance abuse, family psychiatric history, absence of major medical conditions, no recent medication changes before illness onset, normal sensorium and orientation, and normal laboratory markers at presentation.
Extranodal Lymphomas as an Unusual Presentation in Usual Sites: A Potential Clinicoradiological Mimicker of Infection
Authors: Geethanjali R. Aruna , Prabhakaran Brindha , Sridevi S. K. , Priyadharshini L. , Dinesh Vishalli , Archana V. 
Published: January 2025

Abstract
Lymphomas encompass a group of malignancies involving the lymphoreticular system, while extranodal non-Hodgkin’s lymphomas affect any organ or tissue excluding lymph nodes and the spleen. Extranodal lymphomas (ENLs) have different characteristics and often have distinct pathogenic mechanisms and clinical behavior, which has a significant impact in their diagnosis and treatment. This unique case series highlights the difficulty in diagnosing ENL cases from different sites because they clinicoradiologically mimic inflammatory pathology. Although clinical diagnosis, imaging studies, and histopathological diagnosis help arrive at a final diagnosis, this diagnostic dilemma should be kept in mind and additional workup for biopsy should be considered. Here, we present five cases which had ENLs in the gastrointestinal tract, tonsils, thyroid gland, and testis for which histopathology needs ancillary studies like immunohistochemistry to confirm the tissue diagnosis. It is important to note that any delay in diagnosis will have an impact in the appropriate treatment of the patients in such instances.
Pulmonary Mucormycosis – An Experience from a Tertiary Care Center in Southern India: A PULM MUCOR Study
Authors: Arul Ashwin Oliver , Karthik K. Rajiv , Christopher Devasahayam Jesudas 
Published: January 2025

Abstract

Background:
Pulmonary mucormycosis is a rare life-threatening fungal infection that primarily affects immunocompromised individuals, leading to severe morbidity and high mortality. The delta wave of the COVID-19 pandemic in India witnessed an alarming surge in mucormycosis cases, posing a significant health threat nationwide. This study aims to evaluate the risk factors, clinical features, radiological presentation, microbiology, diagnosis, complications, and outcomes of patients with pulmonary mucormycosis before and during the COVID-19 pandemic.

Methodology:
This study retrospectively analyzed case records of patients diagnosed with pulmonary mucormycosis who presented to the departments of pulmonary medicine, respiratory medicine, and infectious diseases at a large 3000-bed tertiary teaching hospital in Southern India between 2012 and 2022.

Results:
Among the 37 patients with pulmonary mucormycosis, 24 (65%) were male, and 13 (35%) were female, with a mean age of presentation of 50.5 years. There were 25 cases of non-COVID-19-associated pulmonary mucormycosis (CAPM) and 12 cases of CAPM. The most common risk factor was diabetes in 34 patients (91%), with the mean glycosylated hemoglobin A1C (HbA1C) at presentation being 10.28. History of steroid use was present in 9 (24%) patients, predominantly among those with CAPM. Cough was the most frequent presenting symptom seen in 27 (73%), followed by fever 24 (64%), dyspnea 11 (30%), and hemoptysis 6 (16%). The most common computed tomography (CT) scan findings were consolidations and cavitations. Majority of the samples 25/37 (67%) were acquired using bronchoscopy. Rhizopus arrhizus was the most commonly isolated species. All patients received systemic antifungal therapy with amphotericin and posaconazole. However, only four patients (11%) underwent combined surgical treatment along with appropriate antifungal agents. The overall mortality in this study was 15/37 (41%).

Conclusions:
Pulmonary mucormycosis requires a high index of suspicion, and a delay in the diagnosis leads to complications and poor outcomes. Uncontrolled diabetes mellitus and chronic kidney disease were the conventional predisposing factors for pulmonary mucormycosis. However, CAPM was associated with both diabetes and steroid usage. Early identification of the disease is the key, and an early referral for bronchoscopy in a susceptible host can shorten the time to diagnosis and probably improve outcomes. Treatment requires a multipronged approach with control of risk factors, appropriate antifungal therapy, and aggressive early surgery where feasible.
Comparison of tooth substance loss and angle deviation in access cavity preparation using guided endodontics and conventional method in calcified canals – An in vitro study
Authors: Bansal Rajinder Kumar , Bansal Manu , Garg Reeshu , Bansal Dolphi 
Published: January 2025

Abstract

Aims:
This study aimed to evaluate the accuracy of access cavity preparation using guided endodontics (GE) and conventional technique (CT) in calcified canals.

Subjects and Methods:
Twenty teeth with calcification up to middle third were collected after scanning through RadioVisioGraphy (RVG). Preoperative cone-beam computed tomography (CBCT) scan was done and samples were randomly divided into two groups of ten samples each on the basis of method of access cavity preparation. Group 1: Access cavity was prepared by CT, Group 2: Access cavity was prepared by GE. 3D template and corresponding guide drill were made for group 2 samples after performing optical surface scans. After access cavity preparation, postoperative CBCT scanning was performed for all samples. The amount of tooth structure loss and angle deviation were calculated using Sidexis Software.

Statistical Analysis Used:
The data were analyzed using IBM SPSS Statistics, version 22. A t-test compared tooth structure loss and angle deviation between groups, and a one-way ANOVA calculated tooth structure loss in multiple directions for both groups (P < 0.001).

Results:
Our study found that the mean tooth volume loss (17.19 mm3 ± 06.11 standard deviation [SD]) and angle deviation (4.82° ±01.66 SD) in GE was significantly less (P < 0.001) as compared to mean tooth structure loss (38.85 mm3 ± 19.07 SD) and angle deviation (13.16° ±2.34 SD) by CT.

Conclusion:
GE is more accurate and conservative than CT in management of calcified canals.