bluuebunny/crossref_metadata_2025_split huggingface dataset:
Astrometric Calibration of MagAO-X with Updated Solutions for HD 165054 Field Stars
Authors: Long Joseph D. , Pearce Logan , Haffert Sebastiaan Y. , Males Jared R. , Close Laird M. , Guyon Olivier , Foster Warren B. , Van Gorkom Kyle , Hedglen Alexander D. , Kautz Maggie Y. , Kueny Jay K. , Li Jialin , Lumbres Jennifer , McEwen Eden A. , McLeod Avalon L. , Schatz Lauren 
Published: December 2024

Abstract
MagAO-X is a recently commissioned extreme adaptive optics instrument for the Magellan Clay 6.5 m telescope at Las Campanas Observatory in Chile. MagAO-X had first light in 2019 and subsequent commissioning observations in 2022 and 2023. An essential step for the commissioning of any new instrument is the calibration of the conversion of detector coordinates to angular sky coordinates, which we accomplish with observations of HD 165054. The background stars adjacent to HD 165054 in Baade’s Window are in a fortuitous configuration for the astrometric calibration of natural-guide-star high-contrast imaging instruments. We extend past work to connect these stars’ positions to absolute astrometry for HD 165054 itself using Gaia Data Release 3 data, and bootstrap the creation of an astrometric solution for our new high-contrast imaging instrument. Through Markov Chain Monte Carlo analysis of the historical data and position measurements from MagAO-X, we obtain updated astrometric parameters for the seven background stars and an astrometric calibration of the MagAO-X science cameras.
First Resolution of Microlensed Images of a Binary-lens Event
Authors: Wu Zexuan , Dong Subo , Mérand A. , Kochanek Christopher S. , Mróz Przemek , Shangguan Jinyi , Christie Grant , Tan Thiam-Guan , Bensby Thomas , Bland-Hawthorn Joss , Buder Sven , Eisenhauer Frank , Gould Andrew P. , Kos Janez , Natusch Tim , Sharma Sanjib , Udalski Andrzej , Woillez J. , Buckley David A. H. , Thompson I. B. , El Dayem Karim Abd , Berdeu Anthony , Berger Jean-Philippe , Bourdarot Guillaume , Brandner Wolfgang , Davies Richard I. , Defrère Denis , Dougados Catherine , Drescher Antonia , Eckart Andreas , Fabricius Maximilian , Feuchtgruber Helmut , Förster Schreiber Natascha M. , Garcia Paulo , Genzel Reinhard , Gillessen Stefan , Heißel Gernot , Hönig Sebastian , Houlle Mathis , Kervella Pierre , Kreidberg Laura , Lacour Sylvestre , Lai Olivier , Laugier Romain , Le Bouquin Jean-Baptiste , Leftley James , Lopez Bruno , Lutz Dieter , Mang Felix , Millour Florentin , Montargès Miguel , Nowacki Hugo , Nowak Mathias , Ott Thomas , Paumard Thibaut , Perraut Karine , Perrin Guy , Petrov Romain , Petrucci Pierre-Olivier , Pourre Nicolas , Rabien Sebastian , Ribeiro Diogo C. , Robbe-Dubois Sylvie , Sadun Bordoni Matteo , Santos Daryl , Sauter Jonas , Scigliuto Jules , Shimizu Taro T. , Straubmeier Christian , Sturm Eckhard , Subroweit Matthias , Sykes Calvin , Tacconi Linda , Vincent Frédéric , Widmann Felix ,   the GRAVITY+ collaboration
Published: December 2024

Abstract
We resolve the multiple images of the binary-lens microlensing event ASASSN-22av using the GRAVITY instrument of the Very Large Telescope Interferometer (VLTI). The light curves show weak binary-lens perturbations, complicating the analysis, but the joint modeling with the VLTI data breaks several degeneracies, arriving at a strongly favored solution. Thanks to precise measurements of the angular Einstein radius θ
E = 0.724 ± 0.002 mas and microlens parallax, we determine that the lens system consists of two M dwarfs with masses of M
1 = 0.258 ± 0.008 M
⊙ and M
2 = 0.130 ± 0.007 M
⊙, a projected separation of r
⊥ = 6.83 ± 0.31 au, and a distance of D
L = 2.29 ± 0.08 kpc. The successful VLTI observations of ASASSN-22av open up a new path for studying intermediate-separation (i.e., a few astronomical units) stellar-mass binaries, including those containing dark compact objects such as neutron stars and stellar-mass black holes.
NIHAO-RiNG: A Comparison of Simulated Disk Galaxies from GASOLINE and GIZMO
Authors: Chen 陈 Hou-Zun 厚尊 , Kang 康 Xi 熙 , Macciò Andrea V. , Buck Tobias , Cen Renyue 
Published: December 2024

Abstract
We utilize the publicly available code GIZMO to re-simulate 12 galaxies selected from the Numerical Investigation of a Hundred Astronomical Object (NIHAO) simulation suite, which were run with the GASOLINE code, then compare their properties. We find that while both codes with the same initial conditions and large-scale environments can successfully produce similar galactic disks in Milky Way-mass systems, yet significant differences are still seen in many aspects, particularly the circumgalactic medium (CGM) environment they reside in. Specifically, the thermal feedback recipe used in GASOLINE results in ubiquitous, long-term, large-scale outflows, primarily driven by high-density hot interstellar medium from the galaxy center, preventing the intergalactic medium from falling efficiently. Recycled gas and inflows in the CGM appear at 104∼5 K, playing a crucial role in the formation of cold disks in the NIHAO simulations. In contrast, disk galaxies simulated by GIZMO do not exhibit prominent outflows at low redshifts, but instead display quasi-virialized hot gas halos that arise from the interaction between inflows and feedback-driven outflows. Therefore, the origins of mass and angular momentum of the cold disk in the two simulations are quite different, even though the final morphologies of the corresponding galaxies are both disky. The differences in the distribution of CGM gas are mainly due to different feedback models implemented in the two codes. Future observations of CGM could provide valuable insight into the physics governing the baryon cycle in galaxies.
Fast Radio Bursts and Interstellar Objects
Authors: Pham Dang , Hopkins Matthew J. , Lintott Chris , Bannister Michele T. , Rein Hanno 
Published: December 2024

Abstract
Fast radio bursts (FRBs) are transient radio events with millisecond-scale durations and debated origins. Collisions between planetesimals and neutron stars (NSs) have been proposed as a mechanism to produce FRBs; the planetesimal strength, size, and density determine the time duration and energy of the resulting event. One source of planetesimals is the population of interstellar objects (ISOs), free-floating objects expected to be extremely abundant in galaxies across the Universe as products of planetary formation. We explore using the ISO population as a reservoir of planetesimals for FRB production, finding that the expected ISO–NS collision rate is comparable with the observed FRB event rate. Using a model linking the properties of planetesimals and the FRBs they produce, we further show that observed FRB durations are consistent with the sizes of known ISOs, and the FRB energy distribution is consistent with the observed size distributions of solar system planetesimal populations. Finally, we argue that the rate of ISO–NS collisions must increase with cosmic time, matching the observed evolution of the FRB rate. Thus, ISO–NS collisions are a feasible mechanism for producing FRBs.
Be Careful in Multimessenger Inference of the Hubble Constant: A Path Forward for Robust Inference
Authors: Müller Michael , Mukherjee Suvodip , Ryan Geoffrey 
Published: December 2024

Abstract
Multimessenger observations of coalescing binary neutron stars (BNSs) using gravitational-wave (GW) and electromagnetic- (EM) wave signals are a direct probe of the expansion history of the Universe and carry the potential to shed light on the disparity between low- and high-redshift measurements of the Hubble constant H
0. To measure the value of H
0 with such observations requires pristine inference of the luminosity distance and the true source redshift with minimal impact from systematics. In this analysis, we carry out joint inference on mock GW signals and their EM afterglows from BNS coalescences and find that the inclination angle inferred from the afterglow light curve and apparent superluminal motion can be precise but need not be accurate and is subject to a systematic uncertainty that could be as large as 1.5σ. This produces a disparity between the EM and GW inferred inclination angles, which if not carefully treated when combining observations can bias the inferred value of H
0. We also find that already small misalignments of 3°–6° between the inherent system inclinations for the GW and EM emission can bias the inference by

O
(
1
σ
–
2
σ
)

if not taken into account. As multimessenger BNS observations are rare, we must make the most out of a small number of events and harness the increased precision while avoiding a reduced accuracy. We demonstrate how to mitigate these potential sources of bias by jointly inferring the mismatch between the GW- and EM-based inclination angles and H
0.
Gas Dynamics in 3 “Dippers”: EPIC 203850058, EPIC 204638512, and EPIC 205151387 in 2017–2018
Authors: Sitko Michael L. , Russell Ray W. , Assani Korash , Bayyari Ammar , Tyler Dakotah , Lisse Carey M. , Grady Carol A. , Danchi William C. 
Published: December 2024

Abstract
We have examined variability of the three dipper stars—EPIC 203850058, EPIC 204638512, and EPIC 205151387—using the SpeX spectrograph on NASA’s Infrared Telescope facility on two nights in 2018. We combined these data with those previously published from 2017. In EPIC 204638512, the He i line was in absorption, but blueshifted in wavelength on all 4 nights, indicating outflowing gas near the disk surface. In EPIC 203850058, no net emission is seen in 2018, but in 2017 it had an absorption core that was degraded to longer wavelengths, suggesting inflowing gas. In EPIC 205151387 the He i line went from emission in the spectrum with the least extinction by dust (highest flux state), became an inverse P Cygni profile, indicating inflowing gas as the extinction increased, and finally to pure absorption when the extinction was greatest.
Ethno-archéologie des bassins versants de la Baltique orientale
Authors: Danto Anatole , Maigrot Yolaine 
Published: December 2024

Cet article rend compte d’un terrain réalisé à l’hiver 2022 en Estonie et en Lettonie, dans le cadre de la mission archéologique 2NOR « Néolithisation du nord-ouest de la Russie », soutenue par le ministère de l’Europe et des Affaires étrangères. Ce travail pluridisciplinaire, mêlant approches ethnographiques et archéologiques, visait à mieux contextualiser les sites de fouilles en cours en amont du bassin versant de la Dvina, en Russie (oblast de Smolensk), en réalisant une analyse diachronique à l’échelle régionale des pratiques halieutiques fluviales et palustres. Durant une semaine, plusieurs institutions ont été visitées, et les différentes données collectées ont fait l’objet d’un traitement visant à étayer nos connaissances des systèmes de pêche au barrage, passés comme présents, des bassins versants de la Baltique orientale.
Reorientation of mission and its action plans for a reformed missional ecclesiology in Africa
Authors: Mashau Thinandavha D. 
Published: December 2024

The quest to understand and practise the church’s missionary calling will remain a significant exercise in the church’s life of every age. This article aims to provide a reorientation of the mission and its action plans for a reformed missional ecclesiology in Africa today. This is prompted by existing concerns around the demise of Christendom and the decline in numbers among some of the reformed churches in Africa. This is coupled with challenges of dualism, syncretism and Sunday-cult Christianity, which are accompanied by no or less societal impact because of a missionless and inward-looking ecclesial praxis. These are some of the reasons, as well as the professionalisation of mission at the expense of the involvement of the laity in the missio Dei, that led to this sorry situation (among these churches) towards the missional ecclesiology and ecclesial praxis of the Reformed Churches in South Africa (RCSA), which are used as an interlocutor from time to time. The main research question is: What kind of missional ecclesiology and praxis should the Reformed churches embrace to facilitate active participation in the missio Dei, resulting in numerical growth and having a societal impact in Africa today? Having investigated the missionary ecclesiology and missional ecclesial praxis of the Reformed churches through a literature review of readily available missiological publications, this article suggests that it should be a missional ecclesiology that is founded and grounded on the missio Dei, biblical, historical, contextual, practical, and eschatological impact.Contribution: This missionary ecclesiology not only rediscovers the giftedness of individual church members but also encourages them to participate in the missio Dei through their lifestyle mission or actions in Africa today.
Novel homozygous SPAG17 variants cause human male infertility through multiple morphological abnormalities of spermatozoal flagella related to axonemal microtubule doublets
Authors: Liu Tao , Rahim Fazal , Yang Meng-Lei , Uddin Meftah , Ye Jing-Wei , Ali Imtiaz , Raza Yousaf , Mansoor Abu , Shoaib Muhammad , Hussain Mujahid , Khan Ihsan , Shah Basit , Khan Asad , Nisar Ahmad , Ma Hui , Xu Bo , Shah Wasim , Shi Qing-Hua 
Published: December 2024

Abstract
Male infertility can result from impaired sperm motility caused by multiple morphological abnormalities of the flagella (MMAF). Distinct projections encircling the central microtubules of the spermatozoal axoneme play pivotal roles in flagellar bending and spermatozoal movement. Mammalian sperm-associated antigen 17 (SPAG17) encodes a conserved axonemal protein of cilia and flagella, forming part of the C1a projection of the central apparatus, with functions related to ciliary/flagellar motility, skeletal growth, and male fertility. This study investigated two novel homozygous SPAG17 mutations (M1: NM_206996.2, c.829+1G>T, p.Asp212_Glu276del; and M2: c.2120del, p.Leu707*) identified in four infertile patients from two consanguineous Pakistani families. These patients displayed the MMAF phenotype confirmed by Papanicolaou staining and scanning electron microscopy assays of spermatozoa. Quantitative real-time polymerase chain reaction (PCR) of patients’ spermatozoa also revealed a significant decrease in SPAG17 mRNA expression, and immunofluorescence staining showed the absence of SPAG17 protein signals along the flagella. However, no apparent ciliary-related symptoms or skeletal malformations were observed in the chest X-rays of any of the patients. Transmission electron microscopy of axoneme cross-sections from the patients showed incomplete C1a projection and a higher frequency of missing microtubule doublets 1 and 9 compared with those from fertile controls. Immunofluorescence staining and Western blot analyses of spermatogenesis-associated protein 17 (SPATA17), a component of the C1a projection, and sperm-associated antigen 6 (SPAG6), a marker of the spring layer, revealed disrupted expression of both proteins in the patients’ spermatozoa. Altogether, these findings demonstrated that SPAG17 maintains the integrity of spermatozoal flagellar axoneme, expanding the phenotypic spectrum of SPAG17 mutations in humans.
A Novel Fibertape Scaffold Technique for Medial Ligament Reconstruction Combined with Minimally Invasive Calcaneal Osteotomy in Stage II Adult Acquired Flatfoot Deformity: A Prospective Study of 20 Patients
Authors: Gupta Vivek Kumar , Motwani Girish , Bandyopadhyay Abhijit 
Published: December 2024

Abstract

Background:
Adult acquired flatfoot deformity (AAFD) is characterized by the collapse of the medial longitudinal arch, often due to posterior tibial tendon dysfunction or spring ligament insufficiency. While traditional surgical approaches, such as tendon transfers and osteotomies, have been employed, they frequently fail to address the underlying ligamentous instability in advanced cases. This study presents a novel technique that involves the use of a quadrangular fibertape scaffold to reconstruct both the spring and deltoid ligaments, combined with medial displacement calcaneal osteotomy (MDCO) without lateral column lengthening (LCL).

Materials and Methods:
Between October 2020 and June 2022, 20 patients (mean age = 49.6 years; 9 males and 11 females) with stage II AAFD who had failed conservative management were enrolled. Exclusion criteria included those with previous foot surgeries, active infections, and neurological disorders. A comprehensive clinical and radiological evaluation, including American Orthopedic Foot and Ankle Society’s (AOFAS) scores and multiple radiographic parameters (Meary’s angle, talocalcaneal angle, talonavicular coverage, and tibiocalcaneal angle), was performed preoperatively and at 3 and 12 months postoperatively. The surgical technique involved minimally invasive MDCO and tibiocalcaneonavicular ligament reconstruction using a quadrangular fibertape scaffold.

Results:
Significant improvements in radiographic parameters were observed at 3 and 12 months postoperatively, including the Meary’s angle, talocalcaneal angles, talonavicular coverage, and tibiocalcaneal angles (P < 0.01). AOFAS scores also showed significant improvement (P < 0.01). The technique demonstrated enhanced medial column stability and foot alignment with minimal complications. No cases of implant failure or major complications were noted during the follow-up period.

Conclusion:
The quadrangular fibertape scaffold technique, combined with MDCO, offers a novel and effective solution for treating stage II AAFD by addressing both soft tissue and bony components. This method provides improved medial ligament stability and foot alignment, with reduced morbidity compared to traditional procedures. The results suggest that this combined approach may redefine the standard of care for advanced flatfoot deformity. Further studies with long-term follow-up are needed to validate these findings.

Level of Evidence:
Level IV, case series.
Reseña del libro: ¿Puede la publicidad ser feminista? Teoría y práctica sobre femvertising
Authors: Piñeiro Otero María Teresa 
Published: December 2024

Introducción: El libro ¿Puede la publicidad ser feminista? Teoría y práctica sobre femvertising de María Isabel Menéndez aborda la publicidad como una herramienta histórica de imposición de roles y estándares de género. Analiza la evolución de esta realidad en el contexto del feminismo actual y el surgimiento del femvertising. Metodología: Menéndez utiliza un enfoque teórico-práctico, integrando los estudios feministas y las Ciencias de la Comunicación. Examina el fenómeno publicitario y propone herramientas para crear contenidos más igualitarios. Discusión: La autora advierte sobre prácticas de femwashing y la necesidad de una perspectiva crítica en la recepción de mensajes publicitarios, incluso en campañas de organismos de igualdad. Resultados: El texto ofrece fundamentos del femvertising y pautas prácticas para transformar la publicidad, alineándola con demandas feministas y la diversidad social. Conclusiones: El libro propone una hoja de ruta hacia una publicidad comprometida con la igualdad, subrayando su rol clave en la construcción de una sociedad democrática y libre de estereotipos machistas.
Pendampingan Dan Pelatihan Kegawatdaruratan Dasar Bagi PMR Di Sekolah Menengah Atas Wilayah Jakarta Utara
Authors: Sunarti Nina , Sofiah Wiwik , Susiani Ari 
Published: December 2024

Knowledge of first aid for students is very important, they can help others if an injury occurs in the school environment. Quick treatment is temporary for a person in an emergency condition. PMR staff in schools at the pre-hospital stage have a strategic position. The aim is to provide basic emergency management education and training for PMR staff at North Jakarta Regional High Schools. This activity was carried out on April 27 2019 at the Harum Nursing Academy, Jakarta. Participants in this activity PMR staff consisted of 31 students. The method used in this activity is health education, discussion and practice of basic emergency techniques such as BHD techniques, wound care, immobilization and casualty evacuation techniques. Evaluation is done by pre-test and post-test. Activities involve experienced experts in providing basic emergency techniques. The evaluation shows an increase in understanding and skills in emergency techniques for PMR personnel. In the future, PMR personnel are expected to be able to apply the skills trained and be able to become peer educators for the surrounding environment.

Mengetahui pertolongan pertama sangat penting agar siswa dapat membantu orang lain jika mengalami cedera di sekolah. Pertolongan pertama bersifat sementara dan diberikan kepada orang-orang dalam situasi darurat. Petugas PMR di sekolah harus memiliki pengetahuan klinis dasar karena petugas PMR mempunyai kedudukan yang strategis dalam pertolongan peratama. Tujuannya adalah untuk memberikan pendidikan dan pelatihan keterampilan dasar manajemen darurat pada Tenaga PMR di SMA Wilayah Jakarta Utara. Kegiatan ini dilakukan pada tanggal 27 April 2019 bertempat di Akademi Keperawatan Harum Jakarta. Peserta pada kegiatan ini Tenaga PMR terdiri dari 31 orang siswa. Metode yang digunakan dalam kegiatan ini adalah pelatihan Kesehatan, diskusi dan praktik teknik kegawatdaruratan dasar seperti tehnik BHD, perawatan luka, Immobilisasi, dan teknik evakuasi korban. Penilaian dilakukan melalui pre-test dan post-test kegiatan yang dilakukan oleh para profesional yang terlatih untuk memberikan keterampilan dasar tanggap darurat. Evaluasi tersebut menghasilkan bahwa petugas PMR memiliki tingkat pemahaman dan keterampilan yang tinggi dalam prosedur darurat kedepannya, petugas PMR diharapkan dapat menerapkan keterampilan yang telah dipelajarinya dan menjadi peer pendidik di lingkungannya.