bluuebunny/crossref_metadata_2025_split huggingface dataset:
Deepest Limits on Scattered Light Emission from the Epsilon Eridani Inner Debris Disk with HST/STIS
Authors: P. M. Sai Krishanth , Douglas Ewan S. , Anche Ramya M. , Hom Justin , Cahoy Kerri L. , Debes John H. , Jang-Condell Hannah , Rebollido Isabel , Ren 任 Bin B. 彬 , Stark Christopher C. , Thompson Robert , Xin Yinzi 
Published: September 2024

Abstract
Epsilon Eridani is one of the first debris disk systems detected by the Infrared Astronomical Satellite. However, the system has thus far eluded detection in scattered light with no components having been directly imaged. Its similarity to a relatively young solar system combined with its proximity makes it an excellent candidate to further our understanding of planetary system evolution. We present a set of coronagraphic images taken using the Space Telescope Imaging Spectrograph coronagraph on the Hubble Space Telescope at a small inner working angle to detect a predicted warm inner debris disk inside 1″. We used three different postprocessing approaches—nonnegative matrix factorization (NMF), Karhunen–Loève Image Processing (KLIP), and classical reference differential imaging, to best optimize reference star subtraction—and find that NMF performed the best overall while KLIP produced the absolute best contrast inside 1″. We present limits on scattered light from warm dust, with constraints on surface brightness at 6 mJy as−2 at our inner working angle of 0.″6. We also place a constraint of 0.5 mJy as−2 outside 1″, which gives us an upper limit on the brightness for outer disks and substellar companions. Finally, we calculated an upper limit on the dust albedo at ω < 0.487.
Three-dimensional Thermodynamic Structures of the Intracluster Medium across Edges in the X-Ray Surface Brightness of Massive, Bright, Dynamically Active Galaxy Clusters
Authors: Ueda Shutaro , Ichinohe Yuto 
Published: September 2024

Abstract
We present a detailed study of three-dimensional (3D) thermodynamic structures of the intracluster medium (ICM) across edges in the X-ray surface brightness of four massive, bright, dynamically active galaxy clusters (A3667, A2319, A520, and A2146), with the Chandra X-ray Observatory. Based on a forward modeling approach developed in previous work, we extend this approach with more generalized ICM density and temperature profiles, allowing us to apply uniformly to the observed X-ray surface brightness profiles to detect edges and measure the 3D thermodynamic profiles of the ICM simultaneously and self-consistently. With the forward modeling analysis, we find, in agreement with previous works, that the obtained 3D thermodynamic structures of the ICM across the edges in A3667 and A2319 are consistent with the characteristics of cold fronts, whereas those in A520 and A2146 are consistent with the nature of shock fronts. We find that the azimuthal distribution of the pressure ratio at the cold front in A3667 shows a different trend from that in A2319. For the shock fronts in A520 and A2146, the observed 3D temperature profiles of the ICM indicate that the temperature is highest at the position of the shock front. In the case of the sector exhibiting

M
=
2.4

in A520, the ICM temperature appears isothermal with a temperature of ∼10 keV until ∼300 kpc away from the shock front in the post-shock region, being consistent with the hypothesis of the instant-equilibration model for shock heating.
A Phase-resolved View of “Heartbeat”-like Variability in IGR J17091-3624 during the 2022 Outburst
Authors: Shui Qing-Cang , Zhang Shu , Peng Jing-Qiang , Zhang Shuang-Nan , Chen Yu-Peng , Kong Ling-Da , Yu Zhuo-Li , Ji Long , Wang Peng-Ju , Chang Zhi , Yin Hong-Xing , Li Jian 
Published: September 2024

Abstract
IGR J17091–3624, in addition to GRS 1915 + 105, is the only black hole X-ray binary that displays “heartbeat”-like variability, characterized by structured flares with high amplitudes. In this study, we conduct a detailed phase-resolved analysis of the recently identified “heartbeat”-like Class X variability in IGR J17091–3624 during its 2022 outburst, utilizing data from NICER and NuSTAR observations. A shortage in the high-energy (>20 keV) X-ray flux is detected at peak phases of the soft-X-ray flare at a ∼15σ confidence level from the phase-folded light curves. Furthermore, our phase-resolved spectral analysis reveals variations in the spectral shape, particularly showing significant synchronous variations in the disk temperature and flux with the count rate. These findings imply that the flare is primarily driven by instabilities within the accretion disk, consistent with previous studies of the well-known Class ρ variability in GRS 1915+105. However, we also observe a positive correlation between the disk temperature and flux over the flare cycle, which differs from the loop relation between the two parameters found in the Class ρ variability. This could suggest differences in the underlying physical processes between the two variability classes. Variations in the Comptonization component during flares are also observed: the electron temperature and covering fraction show anticorrelations with the disk flux, revealing potential interactions between the accretion disk and the corona during these flares.
Toward a Comprehensive Grid of Cepheid Models with MESA. I. Uncertainties of the Evolutionary Tracks of Intermediate-mass Stars
Authors: Ziółkowska O. , Smolec R. , Thoul A. , Farrell E. , Rathour R. Singh , Hocdé V. 
Published: September 2024

Abstract
Helium-burning stars, in particular Cepheids, are especially difficult to model, as the choice of free parameters can greatly impact the shape of the blue loops—the part of the evolutionary track at which the instability strip is crossed. Contemporary one-dimensional stellar evolution codes, like Modules for Experiments in Stellar Astrophysics (MESA), come with a large number of free parameters that allow us to model the physical processes in stellar interiors under many assumptions. The uncertainties that arise from this freedom are rarely discussed in the literature despite their impact on the evolution of the model. We calculate a grid of evolutionary models with MESA, varying several controls, like solar mixture of heavy elements, mixing-length theory prescription, nuclear reaction rates, the scheme to determine convective boundaries, atmosphere model, and temporal and spatial resolution, and quantify their impact on age and location of the evolutionary track on the H-R diagram from the main sequence until the end of core helium burning. Our investigation was conducted for a full range of masses and metallicities expected for classical Cepheids. The uncertainties are significant, especially during core helium burning, reaching or exceeding the observational uncertainties of

log

T

eff

and

log

L

for detached eclipsing binary systems. For ≥9 M
⊙ models, thin convective shells develop and evolve erratically, not allowing the models to converge. A careful inspection of Kippenhahn diagrams and convergence study is advised for a given mass and metallicity, to assess how severe this problem is and to what extent it may affect the evolution.
Abiotic Production of Dimethyl Sulfide, Carbonyl Sulfide, and Other Organosulfur Gases via Photochemistry: Implications for Biosignatures and Metabolic Potential
Authors: Reed Nathan W. , Shearer Randall L. , McGlynn Shawn Erin , Wing Boswell A. , Tolbert Margaret A. , Browne Eleanor C. 
Published: September 2024

Abstract
Among the atmospheric gases that have been proposed as possible biosignatures in exoplanetary atmospheres, organosulfur gases are currently considered one of the more robust indicators of extant life. These gases include dimethyl sulfide (DMS; CH3SCH3), carbonyl sulfide (OCS), and carbon disulfide (CS2), which are predominantly secondary metabolic products of living organisms on Earth. Here we present results that challenge this interpretation and provide constraints on the robustness of organosulfur gases as biosignatures. Through laboratory photochemical experiments, we show the abiotic production of organosulfur gases, including DMS, OCS, methane thiol (CH3SH), ethane thiol (C2H5SH), CS2, and ethyl methyl sulfide (CH3CH2SCH3) via photochemistry in analog atmospheres. Gas-phase products of H2S/CH4/N2 haze photochemistry, with or without CO2, were collected and analyzed using gas chromatography equipped with sulfur chemiluminescence detection. Depending on the starting conditions, we estimate that DMS, OCS, CH3SH, CH3CH2SH, CS2, and CH3CH2SCH3 are produced in mixing ratios >10−1 ppmv. We further demonstrate that as the mixing ratio of CO2 increases, so does the relative importance of OCS compared to DMS. Although our results constrain the robustness of common organosulfur gases as biosignatures, the presence of these compounds may serve as an indicator of metabolic potential on exoplanets.
A Potential Host Galaxy Association for FRB 20190605C
Authors: Modilim Obinna , Shin Kaitlyn , Masui Kiyoshi , Michilli Daniele , Ibik Adaeze L. , Calzadilla Michael , Bhardwaj Mohit 
Published: September 2024

Abstract
We present a probable host galaxy of the fast radio burst FRB 20190605C, detected by the Canadian Hydrogen Intensity Mapping Experiment. The localization was enabled by saved baseband data; the region contained one galaxy with a photometric redshift consistent with the dispersion measure of the FRB. This galaxy was identified as the most likely host with a Probabilistic Association of Transients to their Hosts probability calculation, finding a probability of association P(O∣x) = 0.913. With Prospector, we used a joint spectro-photometric fit to model stellar mass, star formation rate, metallicity, age, and a spectral energy distribution for the host candidate.
Gemini Near-infrared Photometry for a Sample of Cold Brown Dwarfs Discovered by Backyard Worlds: Planet 9
Authors: Meisner Aaron M. , Leggett S. K. , Logsdon Sarah E. , Allen Michaela B. , Faherty Jacqueline K. , Kirkpatrick J. Davy , Kuchner Marc J. , Schneider Adam C. , Wisniewski John P. ,   The Backyard Worlds: Planet 9 Collaboration
Published: September 2024

Abstract
We present Gemini Observatory follow-up J-band and K-band photometry for a sample of 16 T/Y dwarf candidates discovered by the Backyard Worlds: Planet 9 citizen science project. The Gemini observations were taken with Gemini-North using the Near-Infrared Imager instrument between 2017 September and 2018 March. Obtaining near-infrared photometry of very cold brown dwarfs is important for enabling and prioritizing future spectroscopic follow-up, particularly in the context of JWST spectroscopy of T and Y dwarfs.
HD 34382: A Photometrically Identified Candidate Centrifugal Magnetosphere Star
Authors: Kiker Thaddaeus , Diaz Veronica , Bouma Luke G. , Shultz Matt , David-Uraz Alexandre , Folsom Colin P. 
Published: September 2024

Abstract
We identify the chemically peculiar B8/9V star HD 34382 as a candidate member of the rare class of rapidly rotating magnetic B stars. TESS photometry shows eclipses and smooth sinusoidal variability with a period of 2.46 days. We supplement this with Keck/HIRES spectroscopy, which shows that this is a Bp star. The data suggest that the star’s photometric variability results from a combination of chemical surface spots and eclipses by dense, magnetically confined plasma clouds, making this star’s behavior analogous to that of stars like σ Ori E. If the star’s magnetic nature is confirmed through spectropolarimetry, then HD 34382 may possess the longest rotational period known for such stars with photometrically detectable centrifugal magnetospheres. Furthermore, the star’s low temperature could make HD 34382 the coolest star of its class in which such detected centrifugal magnetosphere derived photometric variability has been observed, pending such magnetic confirmation.
Workplace Violence and Worker Well-Being: A Preliminary Cross-Sectional Study
Authors: Meyer Holly Ann , Kiydal Danya , Siefert Kyle , Clark Erin , Dondi Amour Cornelius , Abu-Alhaija Dania M. , Davis Kermit G. , Gillespie Gordon Lee 
Published: September 2024

Purpose
To investigate the prevalence of workplace violence (WPV) in home health care and long-term care facilities (LTCFs) and explore the relationship between WPV and worker well-being.

Method
A cross-sectional survey was conducted with health care workers in an agency that provided care in homes or LTCFs. Six measures of worker well-being were collected: satisfaction with work and life, work-related rumination, work/family conflict, burnout, and turnover intention. Surveys also assessed type and frequency of WPV.

Results
Seventeen participants completed surveys. Verbal abuse by patients was the most often experienced type of WPV. Employees who reported experiencing WPV had higher burnout and lower satisfaction with work and life.

Conclusion

WPV routinely occurs in home health care and LTCFs and appears to be related to worker well-being. Facility managers who can control WPV will likely impact the well-being of employees. [
Journal of Gerontological Nursing, 50
(11), 44–52.]
Preoperative Mental Health Disorders Affect Opioid Consumption and Perioperative Complications After Total Shoulder Arthroplasty
Authors: Mayfield Cory K. , Abu-Zahra Maya S. , Bolia Ioanna K. , Kotlier Jacob L. , Lin Eric H. , Gamradt Seth C. , Weber Alexander E. , Liu Joseph N. , Petrigliano Frank A. 
Published: September 2024

Background
Limited evidence exists regarding the influence of mental health disorders (MHDs) on opioid use and complications after total shoulder arthroplasty (TSA). We aimed to identify the prevalence of common MHDs among patients undergoing anatomic TSA (aTSA) and reverse TSA (rTSA).

Materials and Methods

The Premier Healthcare Database was queried for patients undergoing primary aTSA and rTSA from 2016 to 2020.
International Classification of Diseases, Tenth Revision,
diagnosis codes were used to identify MHDs. Primary outcomes included the prevalence of MHDs, perioperative opioid consumption, and 90-day risk of postoperative complications, revision, and readmission. Bivariate and multivariate regression analyses were performed to assess 90-day risk of primary endpoints while controlling for potential confounders. Statistical significance was defined as
P
<.05.

Results

From 2016 to 2020, 49,997 of 144,725 (34.55%) patients undergoing primary TSA had at least one diagnosed MHD. The most prevalent were depression (17.03%), anxiety (16.75%), and substance use disorder (10.20%). Patients with a MHD had higher mean hospital costs ($75,984±$43,129 vs $73,316±$39,046,
P
<.0001), longer mean length of stay (1.95±2.25 days vs 1.61±1.51 days,
P
<.0001), and higher mean total postoperative opioid use (72.00±231.55 morphine milligram equivalents [MMEs] vs 59.32±127.31 MMEs,
P
<.0001). Periprosthetic fractures (odds ratio, 1.20;
P
=.041), dislocation (odds ratio, 1.12;
P
=.042), and 90-day readmission rates (odds ratio, 1.26;
P
<.001) were significantly higher among patients with a MHD.

Conclusion

This study found that MHDs are associated with significantly increased perioperative opioid consumption, medical and surgical complication rates, and risk of readmission after TSA. Recognition and optimization of MHDs is critical to minimizing complications and opioid consumption after TSA. [
Orthopedics
. 2024;47(6):e303–e310.]
Assessing the Accuracy and Reliability of the Fluoroscopic Ruler for Comminuted Femur Fractures: A Cadaveric Study
Authors: Wahlig Brian D. , Kuttner Nicolas P. , Kouzel-Martinez Frank A. , Broida Samuel E. , Sems Stephen A. , Hidden Krystin A. , Yuan Brandon J. 
Published: September 2024

Background
Fixation of comminuted femur fractures may result in limb length discrepancy. Intraoperative fluoroscopic measurement of the contralateral femur with a ruler is commonly performed to establish a reference for femoral length. No evidence regarding the reliability and accuracy of this technique exists. This study aimed to assess the accuracy and interrater reliability of a fluoroscopic ruler in obtaining correct femoral length in a comminuted femoral shaft fracture model.

Materials and Methods
Approximately 5 cm of bone was removed from the left femoral diaphyses of 8 cadavers. Seven orthopedic surgery residents and 2 attendings measured the length of the intact contralateral femur using a ruler under fluoroscopy. The ruler was then applied to the “fractured” femur with manual traction applied until femoral length matched the measured length of the contralateral femur. The resulting gap in the “fractured” femur was compared with the length of bone that had been resected. Data were analyzed using means, SDs, and intraclass correlation coefficients (ICCs).

Results
Fifty-seven measurements were collected. The mean difference between the measured fracture gap and the length of bone removed was 8.0±5.8 mm (range, 0–22 mm). Femoral length was accurate to 5 mm in 40% of cases, 10 mm in 70%, 15 mm in 81%, 20 mm in 98%, and 25 mm in 100%. The overall interrater reliability was poor (ICC, 0.11; 95% CI, 0.001–0.44).

Conclusion

Despite poor interrater reliability, the fluoroscopic ruler resulted in a mean leg length discrepancy of 8.0±5.8 mm in this cadaveric study. [
Orthopedics
. 2024;47(6):327–331.]
The Christian interpretations on the nature of heaven’s mandate in late Ming and early Qing dynasties
Authors: Xiao Qinghe 
Published: September 2024

This paper aims to examine in detail the Christian interpretations on the Confucian concept of the nature of the heaven’s mandate [天命之性] during the late Ming and early Qing dynasties from historical and textual perspective. Neo-Confucians of the Song Dynasty interpret the nature of the heaven’s mandate as human nature, believing that heaven endowed humans with reason, known as the heavenly principle [天理]. In the late Ming period, Christian missionaries such as Jesuits in China used Confucian classics to convey Christian thoughts, interpreting the heaven’s mandate as God’s mandate and the nature of the heaven’s mandate as the spirituality bestowed by God, which is equated with the soul. They also used the nature of the heaven’s mandate as a criterion for determining the authenticity of a teaching (religion[教]), asserting that Christianity is the true teaching (religion). Thus, Christianity in the late Ming and early Qing dynasties provides a new interpretation on the nature of the heaven’s mandate and promotes the integration of Christian and Confucian thoughts through this interpretation.Contribution: The paper provides a detailed review of the history of Christian interpretations on the nature of the heaven’s mandate during the late Ming and early Qing dynasties. Currently, there is limited scholarly research on the theological thoughts of Christianity during this period. This study not only enhances the understanding of the new interpretations by Christianity but also aids in comprehending the theological ideas of Christianity during the late Ming and early Qing periods. By reinterpreting Confucian classics, Christianity endowed them with new meanings, offering valuable references for the localisation of Christian theology and the study of cross-cultural exchange.
Independent Relationship between Ankylosing Spondylitis and Presystolic Wave Detected on Echocardiography
Authors: Ergül Elif , Özyildiz Ali Gökhan , Barutçu Gökhan , Cüre Osman , Durak Hüseyin , Özyildiz Afag , Çetin Mustafa 
Published: September 2024

Objective:
Ankylosing spondylitis (AS) is a persistent inflammatory disease affecting the axial skeleton which may lead to cardiovascular involvement. We examined the relationship between the presystolic wave (PW), which is frequently encountered in the evaluation of the left ventricular (LV) outflow tract, and AS.

Methods:
The study included 117 consecutive patients with 73 of them being male. Demographic and clinical characteristics of the participants were recorded and echocardiographic examination was performed.

Results:
Patients were categorized into two groups: patients diagnosed with AS (n = 64) and patients without AS (n = 53). LV ejection fraction (P = 0.014), LV mass index (P < 0.001), mitral E wave velocity (P = 0.002), and PW (P = 0.014) were independently linked with AS.

Conclusion:
A substantial correlation was found between PW and AS.
Combined Efficacy of Global Longitudinal Strain and Epicardial Fat Thickness Measurement in Assessing Coronary Artery Disease Severity
Authors: Subbarao K V , Madhavan Suresh , Jayaprasad Narayanapillai 
Published: September 2024

ABSTRACT

Context:
More positive global longitudinal strain (GLS) and higher epicardial fat thickness (EFT) correlate with coronary artery disease (CAD) severity.

Aim:
The aim of the study was to assess the combined efficacy of GLS and EFT measurement in predicting severity of CAD measured by coronary angiography.

Study and Design:
Prospective, observational study conducted in Government Medical College, Kottayam, Kerala, for 2 years. One thousand patients with ≥50% coronary stenosis were grouped as cases and 500 patients who had normal coronaries or <50% stenosis were taken as controls.

Subjects and Methods:
EFT and GLS were measured by transthoracic echo and the severity of CAD was by Gensini scoring.

Statistical Analysis Used:
Mean and standard deviation used for quantitative data and group differences were compared with Student’s t-test.

Results:
We observed a mean EFT of 7.2 mm ± 1.6 mm and mean GLS of–13.24 ± 1.6 among cases compared to a mean EFT of 3.4 mm ± 0.8 mm and mean GLS of–19.2 ± 1.2 in the controls with P < 0.001. The cutoff values of EFT and GLS for predicting significant CAD were 4.85 mm and 14.9 with a sensitivity of 96% and specificity of 88%.

Conclusion:
Combined use of GLS and EFT measurement is less costly and very well correlates with CAD severity.
The Direction of Slant and Horizontal Stroke as Potential Suggestive Markers for the Determination of Handedness
Authors: Gupta Pawan , Singla Anu , Yadav Baljeet , Khare Vartika 
Published: September 2024

Abstract

Background:
The task of document examiners is very challenging, as they need to gather all the relevant facts to make an informed decision regarding the questioned document. In the present study, a total of 300 handwriting samples from 100 different writers (involving 50 right-handed and 50 left-handed) were collected at Bundelkhand University, Jhansi. Slant and stroke, as characteristic features of handwriting, were visually examined under a stereomicroscope to ascertain the handedness.

Methods:
Slants and Strokes as characteristic features were analyzed in a total of 300 handwriting samples collected from 50 left-handed and 50 right-handed writers of age 17–22 years. A reference text comprising three pangram sentences printed on A4 paper and a blue ball point pen was used for sampling.

Results:
The data collected during the study were analyzed using a statistical method (Chi-square test) and revealed that the left-handed writers (LHWs) had a significantly (P < 0.05) different writing style than the right-handed ones. Results indicated that LHWs are more likely to make strokes in the right-to-left direction and slant of letters in the backward direction, while right-handed writers make strokes in the left-to-right direction and slant of letters in the forward direction.

Conclusions:
The findings of the study showed valuable insight and highlighted the significance of the direction of slant and horizontal stroke as potential indicators for the determination of handedness.