bluuebunny/crossref_metadata_2025_split huggingface dataset:
SN 2020jfo: A Short-plateau Type II Supernova from a Low-mass Progenitor
Authors: Teja Rishabh Singh , Singh Avinash , Sahu D. K. , Anupama G. C. , Kumar Brajesh , A. J. Nayana 
Published: May 2022

Abstract
We present spectroscopic and photometric observations of the Type IIP supernova, SN 2020jfo, in ultraviolet and optical wavelengths. SN 2020jfo occurred in the spiral galaxy M61 (NGC 4303), with eight observed supernovae in the past 100 yr. SN 2020jfo exhibited a short plateau lasting < 65 days, and achieved a maximum brightness in Vband of M

V
= −17.4 ± 0.4 mag at about 8.0 ± 0.5 days since explosion. From the bolometric light curve, we have estimated the mass of 56Ni synthesized in the explosion to be 0.033 ± 0.006 M
⊙. The observed spectral features are typical for a Type IIP supernova except for shallow Hα absorption throughout the evolution and the presence of stable 58Ni feature at 7378 Å, in the nebular phase. Using hydrodynamical modeling in the MESA
+
STELLA framework, an ejecta mass of ∼5 M
⊙ is estimated. Models also indicate SN 2020jfo could be the result of a red supergiant progenitor with M
ZAMS ∼ 12 M
⊙. Bolometric light-curve modeling revealed the presence of a secondary radiation source for initial ∼20 days, which has been attributed to interaction with a circumstellar material of mass ∼ 0.2 M
⊙, which most likely was ejected due to enhanced mass loss about 20 yr prior to the supernova explosion.
AlOSO: Spectroscopy and Structure of a New Group of Astrochemical Molecules
Authors: Esposito Vincent J. , Trabelsi Tarek , Francisco Joseph S. 
Published: May 2022

Abstract
With the ever-increasing detection of sulfur-bearing molecules and the high abundance and refractory nature of aluminum, the [Al, S, O2] isomers may play an important role in the gas-phase chemistry of circumstellar envelopes and the chemistry on the surface of dust grains. High-level theoretical exploration of the [Al, S, O2] molecular system yielded five isomers, and predictions of their rotational, vibrational, and electronic spectroscopic properties are provided to inform experimental and observational searches. Cis-AlOSO and diamond isomers are isoenergetic and connected via a very small (∼1 kcal mol−1) transition-state barrier. These isomers may act as intermediates along the chemical pathway between Al + SO2 and AlO + SO. Other isomers OAlOS and SAlO2 are stable relative to their corresponding dissociation asymptotes. Large permanent dipole moments of 2.521 D (cis-AlOSO), 1.239 D (diamond), and 5.401 D (OAlOS) predict strong rotational transitions and indicate these molecules as prime candidates for experimental study. Due to the low transition-state barrier, mixing of the vibrational levels is anticipated, complicating the vibrational spectrum. Electronic spectroscopy may be used as a means to differentiate between the two isomers. Strong electronic transitions are predicted to occur in the 200–300 nm range for cis-AlOSO and diamond. Simulated electronic absorption spectra provide a starting point for experimental characterization and spectral deconvolution of these isomers.
Microphysics of Diffusive Shock Acceleration: Impact on the Spectrum of Accelerated Particles
Authors: Cristofari Pierre , Blasi Pasquale , Caprioli Damiano 
Published: May 2022

Abstract
Diffusive shock acceleration at collisionless shocks remains the most likely process for accelerating particles in a variety of astrophysical sources. While the standard prediction for strong shocks is that the spectrum of accelerated particles is universal, f(p) ∝ p
−4, numerous phenomena affect this simple conclusion. In general, the nonlinear dynamical reaction of accelerated particles leads to a concave spectrum, steeper than p
−4 at momenta below a few tens of GeV c
−1 and harder than the standard prediction at high energies. However, the nonlinear effects become important in the presence of magnetic field amplification, which in turn leads to higher values of the maximum momentum p
max. It was recently discovered that the self-generated perturbations that enhance particle scattering, when advected downstream, move in the same direction as the background plasma, so that the effective compression factor at the shock decreases and the spectrum becomes steeper. We investigate the implications of the excitation of the non-resonant streaming instability on these spectral deformations, the dependence of the spectral steepening on the shock velocity, and the role played by the injection momentum.
Spatially Resolved Molecular Interstellar Medium in a z = 6.6 Quasar Host Galaxy
Authors: Li Jianan , Venemans Bram P. , Walter Fabian , Decarli Roberto , Wang Ran , Cai Zheng 
Published: May 2022

Abstract
We present high spatial resolution (∼0.″4, 2.2 kpc) observations of the CO(6−5), CO(7−6), and [C i]369 μm lines and dust continuum emission from the interstellar medium (ISM) in the host galaxy of the quasar J0305−3150 at z = 6.6. These, together with archival [C ii]158 μm data at a comparable spatial resolution, enable studies of the spatial distribution and kinematics between the ISM in different phases. When comparing the radial profiles of CO, [C ii]158 μm, and the dust continuum, we find that the CO and dust continuum exhibit similar spatial distributions, both of which are less extended than the [C ii]158 μm, indicating that the CO and dust continuum are tracing the same gas component, while the [C ii]158 μm is tracing a more extended one. In addition, we derive the radial profiles of the [C ii]158 μm/CO, [C ii]158 μm/far-infrared (FIR), CO/FIR, and dust continuum S
98.7 GHz/S
258.1 GHz ratios. We find a decreasing S
98.7 GHz/S
258.1 GHz ratio with radius, possibly indicating a decrease of dust optical depth with increasing radius. We also detect some of the ISM lines and continuum emission in the companion galaxies previously discovered in the field around J0305−3150. Through comparing the line-to-line and line-to-FIR ratios, we find no significant differences between the quasar and its companion galaxies.
Searching Extra-tidal Features around the Globular Cluster Whiting 1
Authors: Nie Jundan , Tian Hao , Li Jing , Liu Chao , Smith Martin C. , Tang Baitian , Carballo-Bello Julio A. , Ma Jun , Tian Haijun , Wang Jiaxin , Wu Zhenyu , Peng Xiyan , Wang Jiali , Zhang Tianmeng , Zhou Xu , Zhou Zhimin , Zou Hu 
Published: May 2022

Abstract
Whiting 1 is a faint and young globular cluster in the halo of the Milky Way, and was suggested to have originated in the Sagittarius spherical dwarf galaxy (Sgr dSph). In this paper, we use the deep DESI Legacy Imaging Surveys to explore tentative spatial connection between Whiting 1 and the Sgr dSph. We redetermine the fundamental parameters of Whiting 1 and use the best-fitting isochrone (age τ = 6.5 Gyr, metallicity Z = 0.005 and d
⊙ = 26.9 kpc) to construct a theoretical matched filter for the extra-tidal features searching. Without any smooth technique to the matched filter density map, we detect a round-shape feature with possible leading and trailing tails on either side of the cluster. This raw image is not totally new compared to old discoveries, but confirms that no more large-scale features can be detected under a depth of r < =22.5 mag. In our results, the whole feature stretches 0°.1–0°.2 along the orbit of Whiting 1, which gives a much larger area than the cluster core. The tails on both sides of the cluster align along the orbital direction of the Sgr dSph as well as the cluster itself, which implies that these debris are probably stripped remnants of Whiting 1 by the Milky Way.
The Study of Quasar Clustering at Low Redshifts
Authors: Ordonez Jose , Stripling Carolyn 
Published: May 2022

Abstract
We use a nearest neighbor algorithm combined with the machine learning clustering function Density-Based Spatial Clustering of Applications with Noise to analyze a subset of quasars from the Sloan Digital Sky Survey. Our analysis shows evidence of clustering up to z ∼ 2, with evidence of an increase in clustering at lower redshifts (z < 0.5). Our findings may suggest that, over time, the gravitational interaction between quasars has led to more clustering at low redshifts.
Health Outcomes of 215 Mothers of Children With Autoimmune Congenital Heart Block: Analysis of the French Neonatal Lupus Syndrome Registry
Authors: Miniaoui Imene , Morel Nathalie , Lévesque Kateri , Maltret Alice , Driessen Marine , Masseau Agathe , Orquevaux Pauline , Piette Jean-Charles , Barriere Francois , Le Bidois Jérome , Georgin-Lavialle Sophie , Guettrot-Imbert Gaëlle , Le Guern Véronique , Mouthon Luc , Jallouli Moez , Deligny Christophe , Hachulla Eric , Romefort Bénédicte ,   Lupus Neonatal Group, Bonnet Damien , Costedoat-Chalumeau Nathalie 
Published: May 2022

ObjectiveTransplacental passage of maternal anti-SSA and anti-SSB antibodies, potentially associated with maternal autoimmune diseases, can cause neonatal lupus syndrome. Given the paucity of data in this setting, we report short- and long-term outcomes of mothers of offspring with congenital heart block (CHB).MethodsThis retrospective study included anti-SSA/SSB antibody–positive mothers of fetuses with high-degree CHB and focused on their health status before pregnancy, at CHB diagnosis, and thereafter.ResultsWe analyzed 215 women with at least 1 pregnancy with CHB. Prior to this diagnosis, only 52 (24%) mothers had been diagnosed with an autoimmune disease, mainly systemic lupus erythematosus (SLE; n = 26, 12%) and Sjögren syndrome (SS; n = 16, 7%). Six more were diagnosed with an autoimmune disease during the index pregnancy. Of the 157 mothers (73%) with no such diagnosis at childbirth, 77 (49%) developed one after a median follow-up of 11 years (range: 21 days to 54 years). By the end of follow-up, 135 women (63%) had an autoimmune disease diagnosis, mainly SLE (n = 54, 25%) and SS (n = 72, 33%). Three patients with SLE had renal involvement, and only 6 (3%) had required an immunosuppressive drug at any point. The symptoms best predicting autoimmune disease development were arthralgia and myalgia (P< 0.001), dry syndrome (P= 0.01), and parotid swelling (P= 0.05).ConclusionOne-quarter of the patients had an autoimmune disease diagnosis at the time of the fetal CHB diagnosis. Nearly half of those without an initial diagnosis progressed during follow-up, most without severe manifestations. Severe diseases such as lupus nephritis were rarely seen, and immunosuppressive drugs were rarely required.
Microstructural Evidence of Neuroinflammation for Psychological Symptoms and Pain in Patients With Fibromyalgia
Authors: Lo Yu-Chun , Li Tang Jun Tiffany , Lin Ting-Chun , Chen You-Yin , Kang Jiunn-Horng 
Published: May 2022

ObjectiveIn patients with fibromyalgia (FM), the brain shows altered structure and functional connectivity, but the mechanisms underlying these changes remain unclear. This study investigated the associated changes in brain microstructures and neuroinflammation of patients with FM.MethodsWe recruited 14 patients with FM and 14 healthy controls (HCs). Visual analog scale (VAS), Beck Anxiety Inventory (BAI), and Beck Depression Inventory-II (BDI-II) were used for assessing their pain, anxiety, and depression levels, respectively. Diffusion kurtosis imaging (DKI) was used to visualize microstructural alterations associated with neuroinflammation in specific brain regions. The biomarkers for neuron damage, including serum tau and amyloid β protein fragment 1-42 (Aβ1-42) levels, were assessed. Spearman correlation of DKI parameters with VAS, BAI, and BDI-II scores as well as tau and Aβ1-42 levels were assessed.ResultsThe patients with FM had significantly higher levels of Aβ1-42 levels than HCs. Compared with HCs, the patients with FM showed significantly lower DKI parameters in the bilateral dorsolateral prefrontal cortex and orbitofrontal cortex. Patients with FM showed a significant correlation between the axial kurtosis values of the amygdala and VAS scores (left: ρ = −0.60, P = 0.02; right: ρ = −7.04, P = 0.005).ConclusionTo the best of our knowledge, this is the first study to use DKI to examine the brains of patients with FM. We noted significant DKI changes associated with neuroinflammation at specific areas in patients with FM. Our results provide valuable information on brain neuroinflammation and pathophysiological changes in patients with FM.
Male Sex Predicts a Favorable Outcome in Early ACPA-Negative Rheumatoid Arthritis: Data From an Observational Study
Authors: Cagnotto Giovanni , Jacobsson Lennart T.H. , Rydell Emil , Eberhard Anna , Compagno Michele , Turesson Carl 
Published: May 2022

ObjectiveThe aim of the present study was to investigate whether the relationship between sex and clinical outcomes in early rheumatoid arthritis (RA) varies by autoantibody status.MethodsTwo inception cohorts of consecutive patients with early RA (ie, symptom duration ≤ 12 months) in the southern region of Sweden were investigated. Patients were stratified by anticitrullinated peptide antibody (ACPA) status. The primary outcome was remission (Disease Activity Score in 28 joints [DAS28] < 2.6) at 12 months. Secondary outcomes were remission at 6 months and European Alliance of Associations for Rheumatology good response at 6 and 12 months compared to baseline. In logistic regression models, which were adjusted for age, DAS28 values, and Health Assessment Questionnaire values at baseline, the relationship between sex and clinical outcomes, stratified by ACPA status, was investigated.ResultsIn total, 426 patients with early RA were included: 160 patients were ACPA negative and 266 patients were ACPA positive. At 12 months, 27.1% (38/140) of females and 24.1% (13/54) of males with ACPA-positive RA achieved DAS28 remission. In ACPA-negative RA, 16.0% (13/81) of females and 48.6% (18/37) of males achieved DAS28 remission at 12 months. Males had higher odds of reaching remission at 12 months in the ACPA-negative patient group (pooled adjusted odds ratio [OR] 4.79, 95% CI 1.97-11.6), but not in the ACPA-positive group (pooled adjusted OR 1.06, 95% CI 0.49-2.30).ConclusionMale sex was associated with better clinical outcomes in ACPA-negative early RA, but not in ACPA-positive early RA. The poor outcomes in females with early seronegative RA suggest that this represents a difficult-to-treat patient group.
Les liens serviles en milieu rural : le statut des ḥarāṭīn et leur attachement à l’agriculture et à l’élevage
Authors: Acloque Benjamin 
Published: May 2022

Les ḥarāṭīn mauritaniens, comme leurs homologues marocains, se consacrent traditionnellement aux activités rurales d’agriculture ou de petit élevage. L’époque contemporaine a bouleversé tant les conditions de vie que les statuts sociaux. L’émancipation semble se généraliser. Mais une fois révolus les liens de dépendance personnels, restent ceux liant l’exploitant au propriétaire. L’exode rural, l’expatriation ou le déplacement du village donnent lieu à une plus grande émancipation : la distance entre patrons et dépendants manifeste la distension du lien et réciproquement. Mais les rapports de dépendance ne disparaissent pas totalement puisqu’ils restent le moyen de l’appartenance à une collectivité nécessaire à la vie sociale.
Les ḥarāṭīn entre la baraka des esclaves par Bilȃl (sud du Maroc) et la science coranique (sud de la Mauritanie)
Authors: Schmitz Jean 
Published: May 2022

Cet article envisage les ḥarāṭīn non en tant que groupe isolé mais dans leur position relative à celui des ˤabīd ou descendants d’esclaves. La comparaison du sud du Maroc et de la Mauritanie, qui fait l’originalité de l’enquête, met en lumière l’inversion de la position des deux groupes dans ces deux espaces. Au sud du Maroc, les descendants d’esclaves noirs bénéficient d’une considération supérieure à celle des ḥarāṭīn souvent de teint plus clair. Quatre ethnographies montrent que la fierté d’être esclave et noir comme Bilâl contraste avec l’impureté soupçonnée de l’ascendance des ḥarāṭīn véhiculant le sang des chrétiens ou celui des juifs. À l’inverse, en Mauritanie, ḥarṭāni est devenu un euphémisme pour « esclave », catégorie taboue par excellence car synonyme de kuffâr les « Noirs » ciblés par le jihād du XIX e siècle. Là, c’est l’apprentissage coranique donnant accès à l’islam qui est le gage de la liberté, la véritable « pureté ».
From Slavery? Rethinking Slave Descent as an Analytical Category: The Case of the Mauritanian and Moroccan Ḥarāṭīn
Authors: Rossi Benedetta 
Published: May 2022

Que signifie, après l’abolition mondiale de l’esclavage, le fait de définir des groupes ou des individus comme des « descendants d’esclaves » ? Lorsque l’esclavage était légal, les lois et les normes faisaient la distinction entre le statut juridique d’esclave et de celui d’homme ou de femme libre, et définissaient les relations de production, de reproduction et de propriété entre les personnes asservies et leurs propriétaires. Aujourd’hui, la terminologie vernaculaire, qui identifie certains groupes africains comme « esclaves » ou « descendants d’esclaves » (par exemple, ḥarātīn , ˁabīd , etc.) est souvent un anachronisme sans rapport avec leurs conditions économiques et politiques. Mais dans certains cas, l’ascendance servile continue d’affecter la vie quotidienne de personnes qui n’ont jamais cessé d’être exploitées par les descendants des maîtres. Cet article compare les stratégies identitaires, économiques et politiques des personnes classées comme descendants d’esclaves au Maroc et en Mauritanie. Il discute le lien entre les identités impliquant une ascendance servile et la situation des porteurs de telles identités, et examine les implications des cas de figures analysés ici pour la terminologie analytique des études sur l’esclavage en Afrique.
Toward a theory of potency, power and function leadership
Authors: Morin Gabriel , Stokes Peter 
Published: May 2022

Cet article étudie la notion de leadership à travers la théorisation de trois types de leadership distincts : leadership de puissance, leadership de pouvoir et leadership de fonction ainsi que leurs implications pour la gestion des ressources humaines (GRH). Cette théorisation s’appuie sur la différence philosophique clé que fait Deleuze entre puissance et pouvoir. Une grande partie de la littérature existante sur le leadership considère que pouvoir et fonction sont liés de manière intentionnelle dans les organisations, mais cela peut en négliger l’étude des effets sous-jacents. Une fertilisation croisée et alternative des études sur le leadership et sur la GRH pourrait enrichir la compréhension du développement des individus. Examiner de plus près les conséquences et les complexités de la dynamique du pouvoir et du leadership, ainsi que les effets ambigus qu’ils peuvent produire sur les followers apparaît crucial. En réponse à ces manques, l’article développe une nouvelle conceptualisation du leadership de puissance destinée aux followers , aux leaders et à l’organisation, par le biais de la GRH. Empiriquement, l’article mobilise une méthodologie inductive ayant recours à des entretiens semi-structurants conduits auprès de dirigeants de haut niveau issus de contexte militaire, bancaire et d’une agence de notation financière. Les résultats identifient l’émergence de trois nouveaux types de leadership interconnectés : puissance, pouvoir et fonction, qui produisent trois types d’effets sur les followers . Les résultats comportent des implications pour la GRH dans l’évaluation et le développement du leadership.
Profound Defect of Amphiregulin Secretion by Regulatory T Cells in the Gut of HIV-Treated Patients
Authors: Tariq Mubashira , Gallien Sébastien , Surenaud Mathieu , Wiedemann Aurélie , Jean-Louis Francette , Lacabaratz Christine , Lopez Zaragoza José Luis , Zeitoun Jean-David , Ysmail-Dalhouk Saliha , Lelièvre Jean-Daniel , Lévy Yves , Hüe Sophie 
Published: May 2022

Abstract
The persistence of a leaky gut in HIV-treated patients leads to chronic inflammation with increased rates of cardiovascular, liver, kidney, and neurological diseases. Tissue regulatory T (tTreg) cells are involved in the maintenance of intestinal homeostasis and wound repair through the IL-33 pathway. In this study, we investigated whether the persistence of gut mucosal injury during HIV infection might be explained in part by a flaw in the mechanisms involved in tissue repair. We observed an increased level of IL-33 in the gut of HIV-infected patients, which is associated with an increased level of fibrosis and a low peripheral reconstitution of CD4+ T cells. Our results showed that intestinal Treg cells from HIV-infected patients were enriched in tTreg cells prone to support tissue repair. However, we observed a functional defect in tTreg cells caused by the lack of amphiregulin secretion, which could contribute to the maintenance of intestinal damage. Our data suggest a mechanism by which the lack of amphiregulin secretion by tTreg may contribute to the lack of repair of the epithelial barrier.
Analysis of Complement Gene Expression, Clinical Associations, and Biodistribution of Complement Proteins in the Synovium of Early Rheumatoid Arthritis Patients Reveals Unique Pathophysiologic Features
Authors: Banda Nirmal K , Deane Kevin D , Bemis Elizabeth A , Strickland Colin , Seifert Jennifer , Jordan Kimberly , Goldman Katriona , Morgan B Paul , Moreland Larry W , Lewis Myles J , Pitzalis Costantino , Holers V Michael 
Published: May 2022

Abstract
Rheumatoid arthritis (RA) is an autoimmune disease characterized by synovial hyperplasia and inflammation. The finding of autoantibodies in seropositive RA suggests that complement system activation might play a pathophysiologic role due to the local presence of immune complexes in the joints. Our first objective was to explore the Pathobiology of Early Arthritis Cohort (PEAC) mRNA sequencing data for correlations between clinical disease severity as measured by DAS28-ESR (disease activity score in 28 joints for erythrocyte sedimentation rate) and complement system gene expression, both in the synovium and in blood. Our second objective was to determine the biodistribution using multiplex immunohistochemical staining of specific complement activation proteins and inhibitors from subjects in the Accelerating Medicines Partnership (AMP) RA/SLE study. In the PEAC study, there were significant positive correlations between specific complement gene mRNA expression levels in the synovium and DAS28-ESR for the following complement genes: C2, FCN1, FCN3, CFB, CFP, C3AR1, C5AR1, and CR1. Additionally, there were significant negative correlations between DAS28-ESR and Colec12, C5, C6, MASP-1, CFH, and MCP. In the synovium there were also significant positive correlations between DAS28-ESR and FcγR1A, FcγR1B, FcγR2A, and FcγR3A. Notably, CFHR4 synovial expression was positively correlated following treatment with the DAS28-ESR at 6 mo, suggesting a role in worse therapeutic responses. The inverse correlation of C5 RNA expression in the synovium may underlie the failure of significant benefit from C5/C5aR inhibitors in clinical trials performed in patients with RA. Multiplex immunohistochemical analyses of early RA synovium reveal significant evidence of regional alterations of activation and inhibitory factors that likely promote local complement activation.