bluuebunny/crossref_metadata_2025_split huggingface dataset:
Searching for shell stars in LAMOST DR4 by probing the Fe 42 multiplet lines
Authors: Hümmerich Stefan , Paunzen Ernst , Bernhard Klaus 
Published: October 2022

ABSTRACT
Shell stars, in particular the cooler ones, often do not show conspicuous Balmer-line emission and may consequently be missed in surveys that specifically search for emission signatures in the H α line. This work is aimed at identifying stars with shell-signatures via a search for strong Fe ii multiplet 42 lines at λλ4924, 5018, 5169 Å in archival LAMOST spectra. Candidates were selected by probing the Fe ii (42) lines in the spectra of a sample of colour-preselected early-type stars using a modified version of the MKCLASS code and then categorized by visual inspection of their spectra. We identified 75 stars showing conspicuous shell features, 43 Am/CP1 stars, 12 Ap/CP2 stars, and three objects with composite spectra. Spectral types and equivalent width measurements of the Fe ii (42) lines are presented for the sample of shell stars. Except for three objects, all shell stars appear significantly removed from the ZAMS in the colour–magnitude diagram, which is likely due to extinction by circumstellar material. We find a correlation between the equivalent width of the λ5169 Å line and the distance to the locus of the main-sequence stars (the larger the IR-excess, the stronger the λ5169 Å line) and studied the variability of the shell star sample using Transiting Exoplanet Survey Satellite data, identifying a very high proportion of double stars. All but 14 shell stars are new discoveries, which highlights the efficiency of the here presented novel approach to identify stars with subtle shell features. This study may be used as a blueprint for discovering these objects in massive spectral data bases.
Deep investigation of neutral gas origins (DINGO): H i stacking experiments with early science data
Authors: Rhee Jonghwan , Meyer Martin , Popping Attila , Bellstedt Sabine , Driver Simon P , Robotham Aaron S G , Whiting Matthew , Baldry Ivan K , Brough Sarah , Brown Michael J I , Bunton John D , Dodson Richard , Holwerda Benne W , Hopkins Andrew M , Koribalski Bärbel S , Lee-Waddell Karen , López-Sánchez Ángel R , Loveday Jon , Mahony Elizabeth , Roychowdhury Sambit , Rozgonyi Kristóf , Staveley-Smith Lister 
Published: October 2022

ABSTRACT
We present early science results from Deep Investigation of Neutral Gas Origins (DINGO), an $\rm H$i survey using the Australian Square Kilometre Array Pathfinder (ASKAP). Using ASKAP subarrays available during its commissioning phase, DINGO early science data were taken over ∼60 deg2 of the Galaxy And Mass Assembly (GAMA) 23 h region with 35.5 h integration time. We make direct detections of six known and one new sources at z &lt; 0.01. Using $\rm H$ i spectral stacking, we investigate the $\rm H$ i gas content of galaxies at 0.04 &lt; z &lt; 0.09 for different galaxy colours. The results show that galaxy morphology based on optical colour is strongly linked to $\rm H$ i gas properties. To examine environmental impacts on the $\rm H$i gas content of galaxies, three subsamples are made based on the GAMA group catalogue. The average $\rm H$i mass of group central galaxies is larger than those of satellite and isolated galaxies, but with a lower $\rm H$i gas fraction. We derive a variety of $\rm H$i scaling relations for physical properties of our sample, including stellar mass, stellar mass surface density, NUV − r colour, specific star formation rate, and halo mass. We find that the derived $\rm H$i scaling relations are comparable to other published results, with consistent trends also observed to ∼0.5 dex lower limits in stellar mass and stellar surface density. The cosmic $\rm H$i densities derived from our data are consistent with other published values at similar redshifts. DINGO early science highlights the power of $\rm H$i spectral stacking techniques with ASKAP.
Stellar triples as a source for Ba stars
Authors: Gao Yan , Toonen Silvia , Leigh Nathan 
Published: October 2022

ABSTRACT
Barium stars have been studied extensively over the past few decades, yet our current understanding of how these intriguing objects formed leaves much to be desired. Many trends observed in systems containing barium stars cannot be satisfactorily explained by classical binary evolution models, naturally raising the question of whether triples and other higher order multiples can give rise to such exotic objects. In this paper, we study the possibility that a Roche Lobe overflow from a tertiary in a hierarchical triple system can potentially lead to surface barium enrichment within the inner binary, while at the same time causing the inner binary to merge, thereby producing a barium star. This possibility has the potential to form a large proportion of Barium stars, as Roche Lobe overflow from a tertiary is typically much more stable for close orbits than that from a binary companion. Various formation channels and mechanisms by which this can be achieved are considered, and constraints on relative formation rates are placed on each scenario. Three recently discovered triple systems containing Ba stars further support our proposed formation mechanism. We conclude that a significant portion of barium stars may be formed from hierarchical triple systems, and that further studies are required in this area before a complete understanding of Barium star populations can be achieved.
Polarization of magnetospheric curvature radiation in repeating fast radio bursts
Authors: Wang(王维扬) Wei-Yang , Jiang(姜金辰) Jin-Chen , Lee(李柯伽) Kejia , Xu(徐仁新) Renxin , Zhang(张冰) Bing 
Published: October 2022

ABSTRACT
Fast radio bursts (FRBs) can exhibit a wide variety of polarization properties, not only between sources but also from burst to burst for a same one. In this work, we revisit the polarization characters of coherent curvature radiation from a bulk of charged bunches in the magnetosphere of a highly magnetized neutron star. FRBs have been observed to have a variety of polarization features, such as high levels of circular polarization (CP) or a sign change of CP. High linear polarization (LP) would appear when the line of sight is inside the emission beam (the on-beam geometry), whereas high CP would be present when it is outside (the off-beam geometry). By considering two scenarios of the ‘bulk shapes’ (thick versus thin), we apply the model to explain the polarization features of four repeating FRBs (FRB 20121102A, FRB 180916B, FRB 20190520B and FRB 20201124A). Most bursts are dominated by LP and negligible events have sign changes in CP, suggesting that such FRBs are most likely to be emitted by the ‘thin’ bulks with large opening angles. The higher probability of ‘thin’ bulks could be meaningful for understanding repeating FRB central engine, i.e. the sparking dynamics to produce different bulks of energetic bunches on a neutron star surface.
Simulated optical light curves of super-Eddington tidal disruption events with ZEBRA flows
Authors: Eyles-Ferris R A J , Starling R L C , O’Brien P T , Nixon C J , Coughlin Eric R 
Published: October 2022

ABSTRACT
We present simulated optical light curves of super-Eddington tidal disruption events (TDEs) using the ZEro-BeRnoulli Accretion (ZEBRA) flow model, which proposes that during the super-Eddington phase, the disc is quasi-spherical, radiation-pressure dominated, and accompanied by the production of strong jets. We construct light curves for both on- and off-axis (with respect to the jet) observers to account for the anisotropic nature of the jetted emission. We find that at optical wavelengths, emission from the accretion flow is orders of magnitude brighter than that produced by the jet, even with boosting from synchrotron self-Compton. Comparing to the observed jetted TDE Swift J2058.4+0516, we find that the ZEBRA model accurately captures the time-scale for which accretion remains super-Eddington and reproduces the luminosity of the transient. However, we find the shape of the light curves deviate at early times and the radius and temperature of our modelled ZEBRA are ∼2.7–4.1 times smaller and ∼1.4–2.3 times larger, respectively, than observed. We suggest that this indicates the ZEBRA inflates more, and more rapidly, than currently predicted by the model, and we discuss possible extensions to the model to account for this. Such refinements, coupled with valuable new data from upcoming large-scale surveys, could help to resolve the nature of super-Eddington TDEs and how they are powered.
Symmetry breaking in repeating fast radio bursts
Authors: Katz J I 
Published: October 2022

ABSTRACT
Repeating fast radio bursts (FRB) show temporal symmetry breaking on millisecond time-scales (the ‘sad trombone’). On a time-scale of days, the repetitions of FRB 180916B occur at frequency-dependent phases of its 16.3 d period. Some models predict that all such periodic repeating FRB have the same sign of temporal asymmetry, while others predict that sources with both signs are equally abundant. Future observations of other periodically modulated repeating FRB may distinguish among models on this basis.
Successful argon plasma coagulation treatment for self-expandable metal stent obstruction in colorectal cancer
Authors: Inoue Teruaki 
Published: October 2022

ABSTRACT
Self-expandable metal stents (SEMS) have often been used to treat malignant colorectal obstruction. But SEMS obstruction occurs due to the ingrowth of colorectal cancer. We report a case in which treatment with argon plasma coagulation (APC) was effective for SEMS obstruction. An 89-year-old man was admitted to our hospital for obstructive colorectal cancer. A SEMS was inserted and it improved malignant colorectal obstruction. Computed tomography scans demonstrated liver and lung metastases. His clinical cancer staging was IVb and he wished to receive palliative care. Two months later, SEMS obstruction occurred due to ingrowth of colorectal cancer. Treatment other than stent-in-stent SEMS insertion was considered because SEMS obstruction occurred in a short period of time. APC treatment was chosen and it improved the obstruction. The duration of stent patency was 62 days. APC is an option but it needs further studies to assess the safety of APC.
Allgrove syndrome: a case report
Authors: Alhalabi Marouf , Alsayd Saddam , Alboushi Ebtesam 
Published: October 2022

ABSTRACT
Allgrove syndrome (AS), or Triple-A syndrome, is a multi-system disorder characterized by alacrima (a decrease or absence of tear production), adrenal insufficiency and achalasia (absence of esophageal muscle peristalsis and failure to relax the lower esophageal sphincter). This syndrome may affect the autonomic nervous system, in which case it is called a 4A syndrome. It is a rare autosomal recessive inheritance, and early identification is difficult due to the rarity and wide phenotypic variation even among members of the same family. Endocrinologists, gastroenterologists, ophthalmologists, neurologists and surgeons are needed to coordinate care for these patients. We describe a case of AS that took several years to complete the diagnosis. She was diagnosed with alacrima at the age of 1-year-old, adrenal insufficiency at the age of 9 and achalasia at the age of 16. This case demonstrates the difficulty and delay in the diagnosis of AS.
Ayurvedic treatment induced severe alcoholic hepatitis and non-cirrhotic portal hypertension in a 14-year-old girl
Authors: Philips Cyriac Abby , Ahamed Rizwan , Abduljaleel Jinsha K , Rajesh Sasidharan , Theruvath Arif Hussain , Raveendran Resmi , Augustine Philip 
Published: October 2022

ABSTRACTWe report a novel and as yet undescribed clinical scenario in a young girl with liver failure, in whom, the liver histopathology was suggestive of alcoholic hepatitis in the background of hepatoportal sclerosis and incomplete septal cirrhosis. An extensive clinical and investigational evaluation revealed chronic consumption of multiple Ayurvedic herbal medications for seizure disease. Six months after stopping herbal medicines, the repeat liver biopsy demonstrated resolution of alcohol-related changes but persistence of classical features of non-cirrhotic portal hypertension. Analysis of the retrieved agents, including state of the art chemical and toxicology analysis, using gas chromatography and mass spectroscopy methods demonstrated multiple organic and inorganic toxins associated with acute alcohol and arsenic poisoning related hepatoportal sclerosis/incomplete septal cirrhosis in the young girl.
Cranial osteology and palaeobiology of the Early Cretaceous birdJeholornis prima(Aves: Jeholornithiformes)
Authors: Hu Han , Wang Yan , Fabbri Matteo , O’Connor Jingmai K , McDonald Paul G , Wroe Stephen , Yin Xuwei , Zheng Xiaoting , Zhou Zhonghe , Benson Roger B J 
Published: October 2022

AbstractJeholornis is a representative of the earliest-diverging bird lineages, providing important evidence of anatomical transitions involved in bird origins. Although ~100 specimens have been reported, its cranial morphology remains poorly documented owing to poor two-dimensional preservation, limiting our understanding of the morphology and ecology of the key avian lineage Jeholornithiformes, in addition to cranial evolution during the origin and early evolution of birds. Here, we provide a detailed description of the cranial osteology of Jeholornis prima, based primarily on high-quality, three-dimensional data of a recently reported specimen. New anatomical information confirms the overall plesiomorphic morphology of the skull, with the exception of the more specialized rostrum. Data from a large sample size of specimens reveal the dental formula of J. prima to be 0–2–3 (premaxillary–maxillary–dentary tooth counts), contrary to previous suggestions that the presence of maxillary teeth is diagnostic of a separate species, Jeholornis palmapenis. We also present evidence of sensory adaptation, including relatively large olfactory bulbs in comparison to other known stem birds, suggesting that olfaction was an important aspect of Jeholornis ecology. The digitally reconstructed scleral ring suggests a strongly diurnal habit, supporting the hypothesis that early-diverging birds were predominantly active during the day.
Do Cultures Obtained During Primary THA Predict the Likelihood of Revision?
Authors: Vargas-Reverón Caribay , Font-Vizcarra Lluís , Morata Laura , Fernández-Valencia Jenaro A. , Soriano Alex , Muñoz-Mahamud Ernesto 
Published: October 2022

Abstract

Background
There can be unexpectedly positive culture results during elective hip arthroplasty, but the degree to which these are associated with an increased risk of subsequent premature revision is not known.

Question/purpose
Are unexpectedly positive culture results obtained during elective THA associated with an increased likelihood of revision within 5 years of the procedure?

Methods
Between March 2007 and March 2011, the hip unit at our institution performed elective primary THA in 829 patients. We systematically collected three samples in 52% (428 of 829) of the interventions. Of those, 26 patients were excluded because of sampling errors; 94% (402 of 428) had samples that were collected systematically and were eligible for the study. We only considered one hip randomly in bilateral procedures (4% [15 of 428]); patients presenting with acute (< 3 months) periprosthetic joint infection undergoing open debridement (4% [16 of 402]) and patients who died before 5 years of follow-up (2% [seven of 402]) were excluded from the study, leaving 91% (364 of 402) eligible for analysis in this retrospective study of a previous prospective trial. No patient included in the final analysis was lost to follow-up within 5 years from the index surgery. The patient group consisted of 52% (188 of 364) women, with a mean ± SD age of 64.8 ± 13.9 years.

Results
Positives culture results were associated with a higher risk of revision within 5 years of the index surgery. The proportion of revision surgery was higher in the group with positive culture results than in those with negative results (10% [eight of 77] versus 2% [seven of 290]; p = 0.01). The difference was mainly attributable to a higher proportion of aseptic loosening in those with positive culture results than in those with negative results (8% [six of 74] versus 1% [four of 290]; p = 0.01). After a multivariable analysis, the only independent variable associated with 5-year revision surgery was the presence of positive results during THA (odds ratio 4.9 [95% confidence interval 1.72 to 13.99]).

Conclusion
Our findings suggest that bacterial contamination during THA is associated with an increased likelihood of early revision. This higher risk of revision is mainly because of presumed aseptic loosening; thus, efforts should focus on the need to rule out infection. These results not only open new questions that should be answered in new prospective and well-designed studies, but also may help to better select patients to obtain a more favorable outcome after THA.

Level of Evidence
Level III, therapeutic study.
Stimulated whole-blood cytokine/chemokine responses are associated with interstitial cystitis/bladder pain syndrome phenotypes and features of nociplastic pain: a multidisciplinary approach to the study of chronic pelvic pain research network study
Authors: Schrepf Andrew , Kaplan Chelsea , Harris Richard E. , Williams David A. , Clauw Daniel J. , As-Sanie Sawsan , Till Sara , Clemens J. Quentin , Rodriguez Larissa V. , Van Bokhoven Adrie , Landis Richard , Gallop Robert , Bradley Catherine , Naliboff Bruce , Pontari Mike , O'Donnell Michael , Luo Yi , Kreder Karl , Lutgendorf Susan K. , Harte Steven E. 
Published: October 2022

Abstract
Interstitial cystitis/bladder pain syndrome (IC/BPS) is a common and debilitating disease with poor treatment outcomes. Studies from the multidisciplinary approach to the study of chronic pelvic pain research network established that IC/BPS patients with chronic overlapping pain conditions (COPCs) experience poorer quality of life and more severe symptoms, yet the neurobiological correlates of this subtype are largely unknown. We previously showed that ex vivo toll-like receptor 4 (TLR4) cytokine/chemokine release is associated with the presence of COPCs, as well as widespread pain and experimental pain sensitivity women with IC/BPS. Here, we attempt to confirm these findings in the multisite multidisciplinary approach to the study of chronic pelvic pain Symptom Patterns Study using TLR4-stimulated whole blood (female IC/BPS patients with COPC n = 99; without n = 36). Samples were collected in tubes preloaded with TLR4 agonist, incubated for 24 hours, and resulting supernatant assayed for 7 cytokines/chemokines. These were subject to a principal components analysis and the resulting components used as dependent variables in general linear models. Controlling for patient age, body mass index, and site of collection, we found that greater ex vivo TLR4-stimulated cytokine/chemokine release was associated with the presence of COPCs (P < 0.01), extent of widespread pain (P < 0.05), but not experimental pain sensitivity (P > 0.05). However, a second component of anti-inflammatory, regulatory, and chemotactic activity was associated with reduced pain sensitivity (P < 0.01). These results confirm that the IC/BPS + COPCs subtype show higher levels of ex vivo TLR4 cytokine/chemokine release and support a link between immune priming and nociplastic pain in IC/BPS.
Identification of prognostic genes for early basal-like breast cancer with weighted gene co-expression network analysis
Authors: Yuan Keyu , Wu Min , Lyu Shuzhen , Li Yanping 
Published: October 2022

Background:Breast cancer (BC) has become the leading cause of death for women’s malignancies and increasingly threatens the health of women worldwide. However, there is a lack of effective targeted drugs for basal-like BC. Therefore, biomarkers related to the prognosis of early BC need to be identified.Methods:The RNA-seq data of 87 cases of early basal-like BC and 111 cases of normal breast tissue from The Cancer Genome Atlas were explored by the weighted gene co-expression network analysis method and Limma package. Then, intersected genes were identified, and hub genes were selected by the maximal clique centrality method. The prognostic effect of the hub genes was also evaluated in early basal-like BC.Results:In total, 601 IGs were identified in this study. An APPI network was constructed, and the top 10 hub genes were selected, namely, cyclin B1, cyclin A2, cyclin-dependent kinase 1, cell division cycle 20, DNA topoisomerase II alpha, BUB1 mitotic checkpoint serine/threonine kinase, aurora kinase B (AURKB), cyclin B2, kinesin family member 11, and assembly factor for spindle microtubules. Only AURKB was found to be significantly associated with the overall prognosis of early basal-like BC. The immune cell infiltration analysis showed that the infiltration numbers of CD4 + T cells and naïve CD8 + T cells were positively correlated with the AURKB expression level, while those of naïve B cells and macrophage M2 cells were negatively correlated with the AURKB expression level in basal-like BC.Conclusion:AURKB might be a potential prognostic indicator in early basal-like BC.
Effect of early interventions with manual lymphatic drainage and rehabilitation exercise on morbidity and lymphedema in patients with oral cavity cancer
Authors: Tsai Kuo-Yang , Liao Su-Fen , Chen Kuan-Lin , Tang Hao-Wei , Huang Hsin-Ya 
Published: October 2022

Background:
There are clinical and statistical inconsistencies regarding early intervention with manual lymphatic drainage (MLD). The purpose of this study was to compare the short-term effect of early interventions with rehabilitation exercise versus MLD and rehabilitation exercise in terms of pain, range of motion (ROM) and lymphedema in patients with oral cancer after surgery.

Methods:
A total of 39 patients who underwent surgery from December 2014 to December 2018 participated in this randomized single-blind study. There were 20 patients in the rehabilitation (R) group and 19 in the MLD (M) plus rehabilitation group. The R group received 30 minutes of rehabilitation intervention; and the M group received 30 minutes of MLD, in addition to 30 minutes of rehabilitation intervention in a work day. Clinical measures, including the visual analog pain scale (VAS), ROM of the neck and shoulder, ultrasonography and face distance for lymphedema, and the Földi and Miller lymphedema scales, were assessed before surgery, before intervention and when discharged from the hospital.

Results:
The VAS pain score, ROM of the neck, and internal and external rotation of the right shoulder were significantly improved after the interventions. Right-face distance (P = .005), and skin-to-bone distance (SBD) of the bilateral horizontal mandible and left ascending mandibular ramus were significantly improved after the interventions. Left lateral flexion of the neck (P = .038) and SBD of the right ascending mandibular ramus (P < .001) in the MLD group showed more improvement than that of the rehabilitation group.

Conclusion:
Early intervention with MLD and the rehabilitation program were effective in improving ROM of the neck and controlling lymphedema in acute-phase rehabilitation. The preliminary findings suggest a potential therapeutic role for early intervention with MLD, in addition to rehabilitation exercise, in that they yielded more benefits in lymphedema control and improvement of ROM of the neck in acute care.