bluuebunny/crossref_metadata_2025_split huggingface dataset:
Plasma Waves and Particles during Multi-dip Storms Invoked by Turbulent Solar Wind
Authors: Shah Asif , Rehman Saeed ur , Haque Qamar ul 
Published: December 2018

Abstract
The temporal variations of the disturbance storm time index show the occurrence of multi-dip storms during 2015 April. Specifically, a double-dip storm was observed during April 9–12 and a six-dip storm occurred during April 13–21. This work analyzes the data from the electric field and wave (EFW) instrument, relativistic electron proton telescope (REPT), and electric and magnetic field instrument suite (EMFISIS) on board radiation belt storm probe A (RBSP-A) during the selected multi-dip storms. The ultra low-frequency (ULF) as well as very low-frequency (VLF) electromagnetic oscillations were observed by EFW and EMFISIS simultaneously with the REPT observed fluctuating fluxes of relativistic electrons in the slot and outer Van Allen belt. The timescales, for relativistic electrons flux increase in slot and depletion, refilling of the outer Van Allen belt, were much faster than the temporal variations expected from the radial diffusion driven by drift resonance between ULF waves and relativistic electrons. Therefore, the contribution of VLF interaction with the relativistic electrons is important for understanding rapid flux variations on times of few hours during the considered multi-dip geomagnetic storms. The findings of this study may be helpful for understanding the relativistic electrons dynamics and transport in the Earth’s magnetosphere during multi-dip geomagnetic storms.
Revealing the Broad Line Region of NGC 1275: The Relationship to Jet Power
Authors: Punsly Brian , Marziani Paola , Bennert Vardha N. , Nagai Hiroshi , Gurwell Mark A. 
Published: December 2018

Abstract
NGC 1275 is one of the most conspicuous active galactic nuclei (AGN) in the local universe. The radio jet currently emits a flux density of ∼10 Jy at ∼1 mm wavelengths, down from the historic high of ∼65 Jy in 1980. Yet, the nature of the AGN in NGC 1275 is still controversial. It has been debated whether this is a broad emission line (BEL) Seyfert galaxy, an obscured Seyfert galaxy, a narrow line radio galaxy, or a BL Lac object. We clearly demonstrate a persistent Hβ BEL over the last 35 yr with a full width at half maximum (FWHM) of 4150–6000 km s−1. We also find a prominent Pα BEL (FWHM ≈ 4770 km s−1) and a weak C iv BEL (FWHM ≈ 4000 km s−1), Hβ/C iv ≈ 2. A far-UV Hubble Space Telescope observation during suppressed jet activity reveals a low luminosity continuum. The Hβ BEL luminosity is typical of broad line Seyfert galaxies with similar far-UV luminosity. X-ray observations indicate a softer ionizing continuum than what would be expected for a broad line Seyfert galaxy with similar far-UV luminosity. This is the opposite of the expectation of advection-dominated accretion. The AGN continuum appears to be thermal emission from a low luminosity, optically thick, accretion flow with a low Eddington ratio, ∼0.0001. The soft, weak, ionizing continuum is consistent with the relatively weak C iv BEL. Evidence that the BEL luminosity is correlated with the jet millimeter-wave luminosity is presented. It appears that the accretion rate regulates jet power.
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. VIII. Structure of the Broad-line Region and Mass of the Central Black Hole in Mrk 142
Authors: Li Yan-Rong , Songsheng Yu-Yang , Qiu Jie , Hu Chen , Du Pu , Lu Kai-Xing , Huang Ying-Ke , Bai Jin-Ming , Bian Wei-Hao , Yuan Ye-Fei , Ho Luis C. , Wang Jian-Min 
Published: December 2018

Abstract
This is the eighth in a series of papers reporting on a large reverberation mapping (RM) campaign to measure black hole (BH) mass in active galactic nuclei with high accretion rates. We employ the recently developed dynamical modeling approach for broad-line regions (BLRs) based on the method of Pancoast et al. to analyze the RM data set of Mrk 142 observed in the first monitoring season. In this approach, continuum variations are reconstructed using a damped random walk process, and BLR structure is delineated using a flexible disk-like geometry, in which BLR clouds move around the central BH with Keplerian orbits or inflow/outflow motion. The approach also includes the possibilities of anisotropic emission from BLR clouds, nonlinear response of the line emission to the continuum, and different long-term trends in the continuum and emission-line variations. We implement the approach in a Bayesian framework that is apt for parallel computation and use a Markov chain Monte Carlo technique to recover the parameters and uncertainties for the modeling, including the mass of the central BH. We apply three BLR models with different prescriptions of BLR cloud distributions and find that the best model for fitting the data of Mrk 142 is a two-zone BLR model, consistent with the theoretical BLR model surrounding slim accretion disks. The best model yields a BH mass of

, resulting in a virial factor of

for the full width at half maximum of the Hβ line measured from the mean spectrum. The virial factors for the other measures of the Hβ line width are also presented.
Improved Calibration of the Radii of Cool Stars Based on 3D Simulations of Convection: Implications for the Solar Model
Authors: Spada F. , Demarque P. , Basu S. , Tanner J. D. 
Published: December 2018

Abstract
Main-sequence, solar-like stars (M ≲ 1.5 M
⊙) have outer convective envelopes that are sufficiently thick to affect significantly their overall structure. The radii of these stars, in particular, are sensitive to the details of inefficient, superadiabatic convection occurring in their outermost layers. The standard treatment of convection in stellar evolution models, based on the mixing-length theory (MLT), provides only a very approximate description of convection in the superadiabatic regime. Moreover, it contains a free parameter, α
MLT, whose standard calibration is based on the Sun and is routinely applied to other stars, ignoring the differences in their global parameters (e.g., effective temperature, gravity, chemical composition) and previous evolutionary history. In this paper, we present a calibration of α
MLT based on 3D radiation hydrodynamics (RHD) simulations of convection. The value of α
MLT is adjusted to match the specific entropy in the deep, adiabatic layers of the convective envelope to the corresponding value obtained from the 3D RHD simulations, as a function of the position of the star in the

plane and its chemical composition. We have constructed a model of the present-day Sun using such entropy-based calibration. We find that its past luminosity evolution is not affected by the entropy calibration. The predicted solar radius, however, exceeds that of the standard model during the past several billion years, resulting in a lower surface temperature. This illustrative calculation also demonstrates the viability of the entropy approach for calibrating the radii of other late-type stars.
The Radio/Gamma Connection of Blazars from High to Low Radio Frequencies
Authors: Fan Xu-Liang , Wu Qingwen 
Published: December 2018

Abstract
We construct a large sample of γ-ray blazars with low-frequency radio data using the recently released TGSS AD1 catalog at 150 MHz. The radio/gamma connections of blazars are compared from 143 GHz to 150 MHz. The radio flux density at all radio frequencies shows strong correlation with γ-ray flux for blazars, as well as for the two subclasses, flat-spectrum radio quasars (FSRQs) and BL Lacs. But the correlations get worse from high to low radio frequencies, which indicates that the low-frequency radio emission is the mixture of extended and core components for blazars. In addition, we find that the correlation between 150 MHz radio flux density and γ-ray flux is more significant for BL Lacs than that for FSRQs. The slope for the luminosity correlation between radio and γ-ray flux also gets flatter than unity at 150 MHz. These results indicate that the core dominance at 150 MHz for BL Lacs is larger than that for FSRQs. We also compare the radio luminosity from direct TGSS observations and the extended radiation at 150 MHz for blazars. The results show that the ratio between core and extended components at 150 MHz is about 1:1 on average.
Viscous-dynamical Ejecta from Binary Neutron Star Mergers
Authors: Radice David , Perego Albino , Hotokezaka Kenta , Bernuzzi Sebastiano , Fromm Steven A. , Roberts Luke F. 
Published: December 2018

Abstract
General-relativistic simulations of binary neutron star (NS) mergers with viscosity reveal a new outflow mechanism operating in unequal mass binaries on dynamical timescales and enabled by turbulent viscosity. These “viscous-dynamical” ejecta are launched during the merger due to the thermalization of mass exchange streams between the secondary and the primary NS. They are characterized by asymptotic velocities extending up to ∼0.8c, and have masses that depend on the efficiency of the viscous mechanism. Depending on the unknown strength of the effective viscosity arising from magnetohydrodynamic instabilities operating during the merger, the overall mass of the dynamical ejecta could be enhanced by a factor of a few and the mass of the fast tail of the ejecta, having asymptotic velocities ≥0.6c, by up to four orders of magnitude. The radioactive decay of the expanding viscous-dynamical ejecta could produce bright kilonova transients with signatures of free neutron decay in the first hour, and enhanced near-infrared flux on a timescale of a few days. The synchrotron remnant produced by the interaction between the ejecta and the interstellar medium could also be significantly enhanced by viscosity. Such a remnant could be detected in the case of GW170817 as a rebrightening of the radio signal in the next months to years.
Episcopalis communio , mérites et limites d’une réforme institutionnelle
Authors: Borras Alphonse 
Published: December 2018

Le 15 sep. 2018, le pape François publiait Episcopalis communio qui régit le Synode des évêques. L’A. analyse le sens théologique et canonique de la Constitution apostolique, à partir de son titre et de ses principaux éléments : fonction et nature du Synode des évêques, typologie des Assemblées synodales, déroulement et rôle du Secrétariat général du Synode, etc. Il relève quelques mérites et limites de ce texte novateur pour l’ecclésiologie.
Effect of Diode Laser Retinal Ablative Therapy for Threshold Retinopathy of Prematurity on the Visual Field: Results of Goldmann Perimetry at a Mean Age of 11 Years
Authors: McLoone Eibhlin , O'Keefe Michael , McLoone Sean , Lanigan Bernadette 
Published: December 2018

ABSTRACT
Purpose: To assess the peripheral visual field in premature children who received diode laser photocoagulation for threshold retinopathy of prematurity (ROP) and in a comparison group with subthreshold ROP that had regressed spontaneously without laser treatment.
Patients and Methods: Eleven patients (18 eyes) were treated with laser, and nine patients (16 eyes) with subthreshold untreated ROP were recalled for assessment at a mean follow-up of 1 1 years. All children underwent Goldmann visual field testing using the M4e and V4e stimuli. Distance visual acuity measurement, dilated fundal examination, and cycloplegic autorefraction were also performed.
Results: The visual field extent in treated eyes was 3% to 4% smaller for the V4e target and 7% to 10% smaller for the N4e target than in the comparison eyes. For the N4e stimulus, the right eye visual field extent of the laser-treated children did not differ significantly from that of the untreated comparison group (P = .11), but the left eyes showed a borderline significant reduction (P = .046). For the larger V4e stimulus, no significant differences were noted (right eye, P= .41; left eye, P= .30).
Conclusions: This is the first study to assess the effect of diode laser therapy on the peripheral visual field in eyes with threshold ROP using Goldmann perimetry. Laser-treated eyes showed a slight constriction of peripheral visual fields compared with untreated subthreshold eyes. It is uncertain whether this was due to the laser treatment itself or to the more severe ROP in the laser group. However, the limited reduction in visual field extent is comparable to that reported for cryotherapy and is unlikely to be of functional significance.
J Pediatr Ophthalmol Strabismus 2007;44:170173.
Association Between Fixation Preference Testing and Strabismic Pseudoamblyopia
Authors: Hakim Ossama M 
Published: December 2018

ABSTRACT
Purpose: Fixation preference testing is the mainstay of clinical diagnosis of Strabismic amblyopia in preverbal children and infants. The purpose of this study is to evaluate the strength of the association between fixation preference and Strabismic amblyopia.
Patients and Methods: Eighty patients (3 to 8.3 years) with manifest strabismus and the capability to cooperate with a Snellen acuity test were prospectively examined. Thirty patients were diagnosed as having partially accommodative esotropia, 15 as having congenital esotropia, ?5 as having primary acquired esotropia, 15 as having congenital exotropia, and 5 as having hypertropia. Visual acuity levels were measured using a Snellen ?-chart. Fixation preference was evaluated and graded from O (free alternation) to 3 (strong uniocular fixation). At the end, we compared visual acuity and the grade of fixation preference. Amblyopia was defined as a difference of two or more Snellen lines between the two eyes.
Results: Sixty patients (75%) had strong uniocular fixation (grade 3). Of these patients, 50 (85%) had no amblyopia and only 1 0 had deep amblyopia. Ten patients (12.5%) had moderate fixation (grades 1 and 2). Of these patients, five (50%) had no amblyopia and five had moderate amblyopia. Ten patients (12.5%) had free alternation (grade O). These patients had equal vision.
Conclusion: Treatment of Strabismic amblyopia on the basis that the sound eye will show strong fixation preference can be hazardous. Fixation preference could be a severe form of eye dominance, and better methods for testing visual acuity in preverbal children are required.
J Pediatr Ophthalmol Strabismus 2007;44:1 74177.
Morphological and Functional Changes Immediately After Half-Time Photodynamic Therapy in Patients With Central Serous Chorioretinopathy
Authors: Muslubas Isil Sayman , Ersoz M. Giray , Hocaoglu Mumin , Arf Serra , Karacorlu Murat 
Published: December 2018

BACKGROUND AND OBJECTIVE:
To evaluate early treatment outcomes of half-time photodynamic therapy (PDT) in patients with central serous chorioretinopathy (CSC).

PATIENTS AND METHODS:
The anatomical and functional results were assessed for 24 eyes of 23 patients with CSC treated with half-time PDT in this prospective case series. Central foveal thickness (CFT) and subfoveal choroidal thickness (SCT) were evaluated by spectral-domain optical coherence tomography (SD-OCT), and mean retinal sensitivities and fixation characteristics were evaluated by MP-1 microperimetry at baseline and 1 day, 3 days, 1 week, 1 month, and 3 months after treatment.

RESULTS:

Observations 1 day after treatment revealed an increase in both SCT and CFT and a decrease in retinal sensitivity (
P
= .013;
P
= .02; and
P
= .02, respectively). The CFT significantly resolved 1 month after treatment (
P
= .002), and the SCT significantly resolved 7 days after treatment (
P
= .011). Although an immediate decrease in retinal sensitivity was observed at post-treatment day 1 (
P
= .02), the greatest reduction in retinal sensitivity was observed 3 days after treatment(
P
= .009), and then a tendency to increase was seen at subsequent visits.

CONCLUSIONS:
Despite early anatomical and functional impairments, such as an increase in CFT and SCT and a decrease in retinal sensitivity immediately after half-time PDT, best-corrected visual acuity and retinal sensitivity improved significantly 3 months after treatment. Half-time PDT is associated with early transient deterioration, but not with permanent adverse effect in patients with CSC.

[
Ophthalmic Surg Lasers Imaging Retina
. 2018;49:932–940.]
Non-Lasered Drainage Retinotomies for Repair of Primary Rhegmatogenous Retinal Detachments
Authors: Hodson Trevor S. , Isom Ryan F. , Parke David Wilkin 
Published: December 2018

BACKGROUND AND OBJECTIVE:
Drainage retinotomies are a technique used for treating rhegmatogenous retinal detachments (RRDs). These retinotomies are commonly surrounded by barricade laser. This paper aims to evaluate operative success of non-lasered drainage retinotomies during 25-gauge pars plana vitrectomy (PPV) for repair of primary RRD.

PATIENTS AND METHODS:
Retrospective review of a consecutive interventional case series. Study includes 45 eyes of 45 patients who underwent 25-gauge PPV with a non-lasered drainage retinotomy for primary RRD. Eyes with previous retinal detachments or less than 3 months of follow-up were excluded.

RESULTS:
All PPV with non-lasered drainage retinotomies were carried out by one surgeon (RFI); 25-gauge PPV instrumentation, a wide-angle viewing system, endolaser photocoagulation, and air or sulfur hexafluoride gas tamponade were utilized for each eye. Single surgery anatomical success was achieved in 42 out of 45 eyes (93%).

CONCLUSION:

Retinal detachment repair utilizing non-lasered drainage retinotomies had a high anatomic success rate comparable to that of standard retinal detachment repair.
1,2

[
Ophthalmic Surg Lasers Imaging Retina
. 2018;49:955–960.]
Fibrin Glue and Internal Limiting Membrane Abrasion for Optic Disc Pit Maculopathy
Authors: Almeida David R. P. , Chin Eric K. , Arjmand Parnian , Velez Gabriel , Evans Lucy P. , Mahajan Vinit B. 
Published: December 2018

BACKGROUND AND OBJECTIVE:
To describe a novel surgical technique using pars plana vitrectomy (PPV), internal limiting membrane (ILM) abrasion, and intravitreal fibrin glue for the treatment of optic disc pit maculopathy.

PATIENTS AND METHODS:
Surgical case series technique with scanning electron microscopy (SEM) of human post-mortem eyes.

RESULTS:
Using SEM, the authors demonstrate the persistent adherence of vitreous fragments to the optic disc following induction of posterior vitreous detachment in human postmortem eyes. The authors describe a surgical technique using PPV, Tano Diamond Dusted Membrane Scraper for an ILM abrasion, intravitreal fibrin glue (Tisseel), and gas-air exchange to seal optic disc pits. The authors report successful long-term visual and anatomical outcomes in three patients.

CONCLUSIONS:
Intravitreal fibrin glue, when combined with ILM abrasion, may be a viable treatment option for optic disc pit maculopathy with good short- and long-term visual acuity outcomes. SEM shows that ILM abrasion removes vitreous fragments, which are persistently adherent and may lead to failure with other interventional techniques.

[
Ophthalmic Surg Lasers Imaging Retina.
2018;49:e271–e277.]
Mirabilia et realia dans le Kitāb aḫbār al-Nūba d’Ibn Sulaym al-Uswānī (fin ive/xe siècle)
Authors: Seignobos Robin 
Published: December 2018

Ibn Sulaym al-Uswānī fut envoyé par le conquérant fatimide de l’Égypte, Ǧawhar al-Ṣiqillī, en mission diplomatique à Dongola entre 358/969 et 362/973. À son retour, il rédigea un traité historique et géographique spécialement consacré à la Nubie et aux régions environnantes, connu sous le titre de Kitāb aḫbār al-Nūba. L’œuvre est aujourd’hui considérée comme perdue et nous est seulement parvenue sous la forme de longs extraits cités par al-Maqrīzī et d’autres auteurs plus tardifs. Quoi qu’elle ne se présente pas comme un catalogue de mirabilia, la relation d’al-Uswānī n’en accorde pas moins une place non négligeable à la description des « merveilles » qu’il a lui-même observées ou que ses informateurs lui ont rapportées, et ce même lorsque leur authenticité lui paraît douteuse. Nous constaterons toutefois, à travers l’analyse d’une sélection d’extraits du Kitāb aḫbār al-Nūba, que même les faits les plus extraordinaires sont susceptibles de livrer des informations originales et pertinentes sur les realia nubiennes ou soudanaises.
Essai de lexicographie historique
Authors: Sartori Manuel 
Published: December 2018

Dans le domaine de la grammaire arabe, Ibn al-Ḥāǧib (m. 646/1249) est bien connu pour ses Amālī naḥwiyya mais aussi pour son Imlāʾ ʿalā al-Kāfiya, le commentaire qu’il fit de sa propre Kāfiya fī al-naḥw, compendium tiré du Mufaṣṣal d’al-Zamaḫšarī (m. 538/1144). Généralement compris comme « dictée », imlāʾ, dont il existe deux pluriels (amālī d’une part, imlāʾāt d’autre part), est un terme technique qui appartient au fonds de l’ancienne littérature arabe, grammaticale notamment. Citons ainsi les Amālī d’Abū ʿAlī Ismāʿīl al-Qāsim al-Baġdādī al-Qālī (m. 356/967) dans le domaine de l’adab. Mais ce terme, directement rattachable à deux familles lexicales dont les racines sont M-L-ʾ et M-L-Y, et indirectement à une troisième, M-L-L, n’a le sens de « dictée » que de manière très marginale comparé à tout un ensemble d’autres significations. Cet article, explorant ces autres sens, se propose de retracer l’étymologie probable de imlāʾ pour ce qui concerne celui de « dictée ».
BCL6-Mediated Silencing of PD-1 Ligands in Germinal Center B Cells Maintains Follicular T Cell Population
Authors: Peng Cheng , Hu Qianwen , Yang Fang , Zhang Heng , Li Fubin , Huang Chuanxin 
Published: December 2018

Abstract
The programmed cell death protein 1 (PD-1) ligands PD-L1 and PD-L2 on germinal center (GC) B cells deliver coinhibitory signals to follicular T cells. The PD-L1/L2–PD-1 axis modulates the quality and quantity of follicular T cells and has been shown to influence the GC responses. However, the transcriptional control of PD-1 ligands on GC B cells remains largely unknown. In this study, we report that the transcription factor BCL6 is a key negative regulator of the PD-1 ligands PD-L1 and PD-L2 in GC B cells. Acute deletion of Bcl6 in mature GC B cells resulted in marked upregulation of mRNA and protein abundance of PD-1 ligands. Moreover, the expression levels of BCL6 and PD-1 ligands were inversely correlated during GC B cell development and in human GC–derived lymphoma specimens. Mechanically, BCL6 directly bound to the promoter region of PD-L1 and intron 2 of PD-L2 to suppress their transcription. In addition, BCL6 indirectly inhibited the transcription of PD-1 ligands by repressing the expression of STAT1/STAT3 and IRF1. Moreover, BCL6 exerted these effects via its BTB domain. Finally, PD-1 blockade promoted cell survival to sustain the follicular T cell pool in the presence of Bcl6-deficinet GC B cells. In summary, B cell–specific expression of BCL6 dampens the PD-L1/L2–PD-1 signaling to maintain the size of follicular T cells during GC development.
SRC3 Is a Cofactor for RORγt in Th17 Differentiation but Not Thymocyte Development
Authors: He Zhiheng , Zhang Jing , Du Qian , Xu Jianming , Gwack Yousang , Sun Zuoming 
Published: December 2018

Abstract
SRC3, a highly conserved member of the steroid receptor coactivator (SRC) family, is recruited by transcription factors to regulate cellular function. Previously, we demonstrated that SRC1, another highly conserved member of the SRC family, interacts with RORγt to regulate Th17 differentiation. However, the relationship between SRC1 and SRC3 in the regulation of Th17 cell function remains unknown. In this study, we demonstrate that mouse SRC3 interacts with RORγt in Th17 cells but not in thymocytes. In addition, Src3−/− mice exhibited defective Th17 differentiation and induction of experimental autoimmune encephalomyelitis but normal thymocyte development. Furthermore, a K313 to arginine mutation of RORγt (RORγt-K313R), which disrupts the interaction of RORγt with SRC3 but not with SRC1, impairs Th17 differentiation but not thymocyte development. These data suggest that SRC3 works with SRC1 to regulate RORγt-dependent Th17 differentiation but is not essential for RORγt-dependent thymocyte development.