bluuebunny/crossref_metadata_2025_split huggingface dataset:
Probable brown dwarf companions detected in binary microlensing events during the 2018–2020 seasons of the KMTNet survey
Authors: Han Cheongho , Kil Jung Youn , Kim Doeon , Gould Andrew , Bozza Valerio , Bond Ian A. , Chung Sun-Ju , Albrow Michael D. , Hwang Kyu-Ha , Ryu Yoon-Hyun , Shin In-Gu , Shvartzvald Yossi , Yang Hongjing , Zang Weicheng , Cha Sang-Mok , Kim Dong-Jin , Kim Hyoun-Woo , Kim Seung-Lee , Lee Chung-Uk , Lee Dong-Joo , Yee Jennifer C. , Lee Yongseok , Park Byeong-Gon , Pogge Richard W. , Abe Fumio , Barry Richard , Bennett David P. , Bhattacharya Aparna , Fujii Hirosame , Fukui Akihiko , Hirao Yuki , Ishitani Silva Stela , Kirikawa Rintaro , Kondo Iona , Koshimoto Naoki , Matsubara Yutaka , Matsumoto Sho , Miyazaki Shota , Muraki Yasushi , Okamura Arisa , Olmschenk Greg , Ranc Clément , Rattenbury Nicholas J. , Satoh Yuki , Sumi Takahiro , Suzuki Daisuke , Toda Taiga , Tristram Paul J. , Vandorou Aikaterini , Yama Hibiki , Itow Yoshitaka 
Published: May 2023

Aims. We inspect the microlensing data of the KMTNet survey collected during the 2018-2020 seasons in order to find lensing events produced by binaries with brown dwarf (BD) companions.
Methods. In order to pick out binary-lens events with candidate BD lens companions, we conducted systematic analyses of all anomalous lensing events observed during the seasons from 2018 to 2020. By applying a selection criterion of mass ratio between the lens components of 0.03 ≲ q ≲ 0.1, we identify four binary-lens events with candidate BD companions, namely KMT-2018-BLG-0321, KMT-2018-BLG-0885, KMT-2019-BLG-0297, and KMT-2019-BLG-0335. For the individual events, we present interpretations of the lens systems and measure the observables that can be used to constrain the physical lens parameters.
Results. The masses of the lens companions estimated from the Bayesian analyses based on the measured observables indicate high probabilities that the lens companions are in the BD mass regime; that is, 59%, 68%, 66%, and 66% for the four respective events.
The source of unusual coronal upflows with photospheric abundance in a solar active region
Authors: Harra L. K. , Mandrini C. H. , Brooks D. H. , Barczynski K. , Mac Cormack C. , Cristiani G. , Mandal S. , Sterling A. C. , Martinez Pillet V. , Janitzek N. , Schühle U. , Berghmans D. , Auchère F. , Aznar Cuadrado R. , Buchlin E. , Kraaikamp E. , Long D. , Parenti S. , Peter H. , Rodriguez L. , Smith P. , Teriaca L. , Verbeeck C. , Zhukov A. N. 
Published: May 2023

Context. Upflows in the corona are of importance, as they may contribute to the solar wind. There has been considerable interest in upflows from active regions (ARs). The coronal upflows that are seen at the edges of active regions have coronal elemental composition and can contribute to the slow solar wind. The sources of the upflows have been challenging to determine because they may be multiple, and the spatial resolution of previous observations is not yet high enough.
Aims. In this article, we analyse coronal upflows in AR 12960 that are unusually close to the sunspot umbra. We analyse their properties, and we attempt to determine if it is possible that they feed into the slow solar wind.
Methods. We analysed the activity in the upflow region in detail using a combination of Solar Orbiter EUV images at high spatial and temporal resolution, Hinode/EUV Imaging Spectrometer data, and observations from instruments on board the Solar Dynamics Observatory. This combined dataset was acquired during the first Solar Orbiter perihelion of the science phase, which provided a spatial resolution of 356 km for two pixels. Doppler velocity, density, and plasma composition determinations, as well as coronal magnetic field modelling, were carried out to understand the source of the upflows.
Results. We observed small magnetic fragments, called moving magnetic features (MMFs), moving away from the sunspot in the active region. Specifically, they moved towards the sunspot from the edge of the penumbra where a small positive polarity connects to the umbra via small-scale and very dynamic coronal loops. At this location, small dark grains are evident and flow along penumbral filaments in continuum images. The magnetic field modelling showed small low-lying loops anchored close to the umbral magnetic field. The high-resolution data of the Solar Orbiter EUV Imagers showed the dynamics of these small loops, which last on time scales of only minutes. The edges of these small loops are the location of the coronal upflow that has photospheric abundance.
Sapaki: Galactic O3If* star possibly born in isolation
Authors: Zarricueta Plaza M. S. , Roman-Lopes A. , Sanmartim D. 
Published: May 2023

Context. The study of high-mass stars found to be isolated in the field of the Milky Way may help to probe the feasibility of the core-accretion mechanism in the case of massive star formation. The existence of truly isolated stars may efficiently probe the possibility that individual massive stars can be born in isolation.
Aims. We observed WR67a (hereafter Sapaki), an O3If* star that appears to be isolated close to the center of a well-developed giant cavity that is aptly traced by 8.0 μm hot dust emission.
Methods. We acquired medium-resolution (R  =  4100) and moderate signal-to-noise (S/N  =  95 at 4500 Å) spectra for Sapaki in the range of 3800 − 10 500 Å with the Magellan Echellette (MagE) at Las Campanas Observatory. We computed the line-of-sight total extinctions. Additionally, we restricted its heliocentric distance by using a range of different estimators. Moreover, we measured its radial velocity from several lines in its spectrum. Finally, we analyzed its proper motions from Gaia to examine its possible runaway status.
Results. The star has been classified as having the spectral type O3If* given its resemblance to standard examples of the class. In addition, we found that Sapaki is highly obscured, reaching a line-of-sight extinction value of AV = 7.87. We estimated the heliocentric distance to be in the range of d = 4 − 7 kpc. We also estimated its radial velocity to be Vr = −34.2 ± 15.6 km s−1. We may also discard its runaway status solely based on its 2D kinematics. Furthermore, by analyzing proper motions and parallaxes provided by Gaia, we found only one other star with compatible measurements.
Conclusions. Given its apparent non-runaway status and the absence of clustering, Sapaki appears to be a solid candidate for isolated high-mass star formation in the Milky Way.
The Trans-Heliospheric Survey
Authors: Maruca Bennett A. , Qudsi Ramiz A. , Alterman B. L. , Walsh Brian M. , Korreck Kelly E. , Verscharen Daniel , Bandyopadhyay Riddhi , Chhiber Rohit , Chasapis Alexandros , Parashar Tulasi N. , Matthaeus William H. , Goldstein Melvyn L. 
Published: May 2023

Context.Though the solar wind is characterized by spatial and temporal variability across a wide range of scales, long-term averages of in situ measurements have revealed clear radial trends: changes in average values of basic plasma parameters (e.g., density, temperature, and speed) and a magnetic field with a distance from the Sun.Aims.To establish our current understanding of the solar wind's average expansion through the heliosphere, data from multiple spacecraft needed to be combined and standardized into a single dataset.Methods.In this study, data from twelve heliospheric and planetary spacecraft - Parker Solar Probe (PSP), Helios 1 and 2, Mariner 2 and 10, Ulysses, Cassini, Pioneer 10 and 11, New Horizons, and Voyager 1 and 2 - were compiled into a dataset spanning over three orders of magnitude in heliocentric distance. To avoid introducing artifacts into this composite dataset, special attention was given to the solar cycle, spacecraft heliocentric elevation, and instrument calibration.Results.The radial trend in each parameter was found to be generally well described by a power-law fit, though up to two break points were identified in each fit.Conclusions.These radial trends are publicly released here to benefit research groups in the validation of global heliospheric simulations and in the development of new deep-space missions such as Interstellar Probe.
Blut-Kammerwasser-Schranken-Störungen bei perforierender und posteriorer lamellärer Keratoplastik: Implikationen für das klinische Ergebnis
Authors: Matthaei Mario , Fassin Anne , Mestanoglu Mert , Howaldt Antonia , Schrittenlocher Silvia Andreea , Schlereth Simona , Roters Sigrid , Grajewski Rafael S. , Bachmann Björn O. , Cursiefen Claus 
Published: May 2023

Zusammenfassung
Hintergrund Die Blut-Kammerwasser-Schranke (BKS) grenzt immunprivilegiertes Gewebe des Auges von der Blutzirkulation ab. Die Störung der BKS stellt somit einen Risikofaktor für
Abstoßungsreaktionen nach Keratoplastik dar.
Ziel der Arbeit Die vorliegende Arbeit bietet eine Übersicht der Arbeiten unserer und anderer Arbeitsgruppen zu BKS-Störungen bei perforierender (PKPL) und posteriorer lamellärer
Keratoplastik sowie deren Implikationen für das klinische Ergebnis.
Methoden Es erfolgte eine PubMed-Literaturrecherche zur Erstellung einer Übersichtsarbeit.
Ergebnis Die Laser-Flare-Photometrie bietet ein objektives und reproduzierbares Verfahren zur Beurteilung der Integrität der BKS. Untersuchungen des Flares nach perforierender und
posteriorer lamellärer Keratoplastik belegen eine im postoperativen Verlauf meist rückläufige Störung der BKS, die in Ausmaß und Dauer durch multiple Faktoren beeinflusst wird. Persistierend
erhöhte Flare-Werte oder ein Anstieg des Flares nach zunächst postoperativer Regeneration können dabei auf ein erhöhtes Abstoßungsrisiko hinweisen.
Diskussion Bei persistierend oder im postoperativen Verlauf rezidivierend erhöhten Flare-Werten nach Keratoplastik ist eine intensivierte (lokale) Immunsuppression möglicherweise
sinnvoll. Dies könnte zukünftig, insbesondere beim Monitoring von Patienten nach Hochrisiko-Keratoplastik, Bedeutung erlangen. Ob ein Anstieg des Laser-Flares ein reliabler Frühindikator
einer drohenden Immunreaktion nach PKPL oder posteriorer lamellärer Keratoplastik ist, müssen jedoch prospektive Studien zeigen.
National Needs Assessment of Utilization of Common Newborn Clinical Decision Support Tools
Authors: Beam Kristyn , Wang Cindy , Beam Andrew , Clark Reese , Tolia Veeral , Ahmad Kaashif 
Published: May 2023

Objective Clinical decision support tools (CDSTs) are common in neonatology, but utilization is rarely examined. We examined the utilization of four CDSTs in newborn care.
Study Design A 72-field needs assessment was developed. It was distributed to listservs encompassing trainees, nurse practitioners, hospitalists, and attendings. At the conclusion of data collection, responses were downloaded and analyzed.
Results We received 339 fully completed questionnaires. BiliTool and the Early-Onset Sepsis (EOS) tool were used by > 90% of respondents, the Bronchopulmonary Dysplasia tool by 39%, and the Extremely Preterm Birth tool by 72%. Common reasons CDSTs did not impact clinical care included lack of electronic health record integration, lack of confidence in prediction accuracy, and unhelpful predictions.
Conclusion From a national sample of neonatal care providers, there is frequent but variable use of four CDSTs. Understanding the factors that contribute to tool utility is vital prior to development and implementation.
Key Points
The Impact of Cervical Effacement at Time of Amniotomy in Patients Undergoing Induction of Labor
Authors: Rimsza Rebecca R. , Kelly Jeannie C. , Frolova Antonina I. , Odibo Anthony A. , Carter Ebony B. , Cahill Alison G. , Raghuraman Nandini 
Published: May 2023

Objective There is evidence to suggest that early amniotomy during induction of labor is advantageous. However, following cervical ripening balloon removal, the cervix remains less effaced and the utility of amniotomy in this setting is less clear. We investigated whether cervical effacement at the time of amniotomy impacts outcomes among nulliparas undergoing induction of labor.
Study Design This was a secondary analysis of a prospective cohort of singleton, term, nulliparous patients at a tertiary care center undergoing induction of labor and amniotomy. The primary outcome was completion of the first stage of labor. Secondary outcomes were vaginal delivery and postpartum hemorrhage. Outcomes were compared between patients with cervical effacement ≤50% (low effacement) and >50% (high effacement) at time of amniotomy. Multivariable logistic regression was used calculate risk ratios (RR) to adjust for confounders including cervical dilation. Stratified analysis was performed in patients with cervical ripening balloon use. A post hoc sensitivity analysis was performed to further control for cervical dilation.
Results Of 1,256 patients, 365 (29%) underwent amniotomy at low effacement. Amniotomy at low effacement was associated with reduced likelihood of completing the first stage (aRR: 0.87 [95% confidence interval, CI: 0.78–0.95]) and vaginal delivery (aRR: 0.87 [95% CI: 0.77–0.96]). Although amniotomy at low effacement was associated with lower likelihood of completing the first stage in all-comers, those who had amniotomy performed at low effacement following cervical ripening balloon expulsion were at the highest risk (aRR: 0.84 [95% CI: 0.69–0.98], p for interaction = 0.04) In the post hoc sensitivity analysis, including patients who underwent amniotomy at 3- or 4-cm dilation, low cervical effacement remained associated with a lower likelihood of completing the first stage of labor.
Conclusion Low cervical effacement at time of amniotomy, particularly following cervical ripening balloon expulsion, is associated with a lower likelihood of successful induction.
Key Points
Comparison of Adverse Maternal Outcomes between Early- and Late-Onset Superimposed Preeclampsia
Authors: Onishi Kazuma , Seagraves Elizabeth , Baraki Dana , Donaldson Thomas , Barake Carole , Abuhamad Alfred , Huang Jim C. , Kawakita Tetsuya 
Published: May 2023

Objective Superimposed preeclampsia (SIPE), defined as preeclampsia in individuals with chronic hypertension, is one of the most common complications, accounting for 13 to 40% of pregnancies with chronic hypertension. However, there are limited data regarding maternal outcomes of early- and late-onset SIPE in individuals with chronic hypertension. We hypothesized that early-onset SIPE was associated with increased odds of adverse maternal outcomes compared with late-onset SIPE. Therefore, we aimed to compare adverse maternal outcomes between individuals with early-onset SIPE and those with late-onset SIPE.
Study Design This was a retrospective cohort study of pregnant individuals with SIPE who delivered at 22 weeks' gestation or greater at an academic institution. Early-onset SIPE was defined as the onset of SIPE before 34 weeks' gestation. Late-onset SIPE was defined as the onset of SIPE at or after 34 weeks' gestation. Our primary outcome was a composite of eclampsia, hemolysis, elevated liver enzymes, low platelet count (HELLP) syndrome, maternal death, placental abruption, pulmonary edema, SIPE with severe features, and thromboembolic disease. Maternal outcomes were compared between early- and late-onset SIPE. We used simple and multivariate logistic regression models to calculate crude and adjusted odds ratios (aOR) with 95% confidence intervals (95% CI).
Results Of 311 individuals, 157 (50.5%) had early-onset SIPE, 154 (49.5%) had late-onset SIPE. There were significant differences in the proportions of obstetric complications, including the primary outcome, HELLP syndrome, SIPE with severe features, fetal growth restriction (FGR), and cesarean delivery between early- and late-onset SIPE. Compared with individuals with late-onset SIPE, those with early-onset SIPE had increased odds of the primary outcome (aOR: 3.28; 95% CI: 1.42–7.59), SIPE with severe features (aOR: 2.72; 95% CI: 1.25–5.90), FGR (aOR: 6.07; 95% CI: 3.25–11.36), and cesarean delivery (aOR 3.42; 95% CI: 2.03–5.75).
Conclusion Individuals with early-onset SIPE had higher odds of adverse maternal outcomes compared with those with late-onset SIPE.
Key Points
Factors Associated with Guideline Concordant Clinician Counseling about Low-Dose Aspirin to Prevent Preeclampsia in Nulliparous Patients
Authors: Myers Sabrena O. , Luke Shauntell , Ramey-Collier Khaila L. , Truong Tracy , Weaver Kristin , Swamy Geeta K. , Wheeler Sarahn M. 
Published: May 2023

Objective The primary aim of this study was to examine the United States Preventative Services Task Force (USPSTF) guidelines concordant low-dose aspirin (LDA) counseling and factors associated with counseling in nulliparous birthing individuals.
Study Design We conducted a retrospective cohort study of nulliparous birthing individuals who delivered between January 1, 2019 and June 30, 2020 and received prenatal care at the Duke High Risk Obstetrical Clinics (HROB). All nulliparous patients over 18 years old who established or transferred care to HROB by 16 weeks, 6 days were included in the analysis. We excluded patients with more than two previous first-trimester pregnancy losses, multiple gestation, a known contraindication to LDA, initiation of LDA prior to their prenatal care, or documented medical history of coagulation disorder. Bivariate associations between demographic/medical characteristics and our primary outcome, receipt of counseling (yes/no), were assessed using two-sample t-tests for continuous variables and chi-square or Fisher's exact test for categorical variables. Factors significantly associated with the primary outcome (p < 0.05) were entered into the multivariable logistic regression model.
Results Among 391 birthing individuals included in the final analysis cohort, 51.7% of eligible patients received guideline consistent LDA counseling. Factors associated with increased odds of LDA counseling were advanced maternal age (adjusted odds ratio [aOR]: 1.05, 95% confidence interval [CI]: 1.01–1.09), Black race compared with White race (aOR:1.75, 95% CI: 1.03–2.98), chronic hypertension (aOR: 4.17, 95% CI: 1.82–9.55), and obesity (aOR: 5.02, 95% CI: 3.12–8.08).
Conclusion Approximately half of all nulliparous birthing individuals had appropriately documented LDA counseling. The USPSTF guidelines on LDA for preeclampsia risk reduction are complex, which may lead to ineffective provider adherence. Efforts to simplify guidelines and improve LDA counseling are vital to ensuring this low-cost, evidence-based preeclampsia prevention is used in a consistent and equitable manner.
Key Points
A Tardy Ulnar Palsy with an Anomalous Course of Ulnar Nerve
Authors: Shah Harsh R. , Hiremath Amita , Munshi Parag , Thatte Mukund R. 
Published: May 2023

AbstractVariations are inherent feature of the intricate brachial plexus. They can be at the level of origin, the course, or the innervation pattern of each peripheral nerve. Knowledge of the various described variations can be worthwhile during the routine hand surgery procedures. We present a case of an elderly patient with anomalous intramuscular course of the ulnar nerve presenting with ulnar neuropathy at the elbow.
Level of Evidence: IV.
Nurses' and Parents' View on Neonatal Intensive Care Unit Diaries: A Qualitative Study and Framework Conceptualization
Authors: Willmeroth Tabea 
Published: May 2023

Objective The birth of a premature or critically ill newborn can be a traumatic event for the entire family. In these situations, the neonatal intensive care unit (NICU) diary is a relevant coping intervention to support family members. However, a profound theoretical concept is lacking, and there is little evidence about how it is applied by nurses in clinical practice. Therefore, this study aims to investigate how NICU diaries are used by nurses to support family members cope with their experiences and to develop an evidence-guided and theory-based framework for conceptualizing diary usage in the NICU.
Study Design A qualitative study design containing 12 narrative interviews with nurses from six different hospitals and two focus group interviews with nine parents from two different hospitals was chosen. The qualitative data were analyzed via content analysis inductively and separately and brought together via graphical coding in a second step.
Results Four main categories emerged from the analyzed data to describe the NICU diary in nursing practice. Regarding diary (1) “usage,” three different types of NICU diaries were identified, which seem to be established largely intuitive. The (2) “content” is constituted by the diary's title, introduction, textual, and nontextual components. Taking into account the diary (3) “function” for the parental coping process, three subcategories emerge: (a) strengthening the parental role, (b) supporting understanding of events, and (c) bringing joy and normality to the situation. (4) “Challenges” address an appropriate writing style, the reading of parental entries by nurses and limited resources. Based on these results and taking into account relevant literature, a framework for conceptualizing NICU diaries was developed.
Conclusion NICU diaries show great potential to support the parental coping process. Nevertheless, diary conceptualization should be based on a theoretical framework to clarify its usage for nurses and parents.
Key Points
Increased Levels of Inflammatory and Endothelial Biomarkers in Blood of Long COVID Patients Point to Thrombotic Endothelialitis
Authors: Turner Simone , Naidoo Caitlin A. , Usher Thomas J. , Kruger Arneaux , Venter Chantelle , Laubscher Gert J. , Khan M Asad , Kell Douglas B. , Pretorius Etheresia 
Published: May 2023

AbstractThe prevailing hypotheses for the persistent symptoms of Long COVID have been narrowed down to immune dysregulation and autoantibodies, widespread organ damage, viral persistence, and fibrinaloid microclots (entrapping numerous inflammatory molecules) together with platelet hyperactivation. Here we demonstrate significantly increased concentrations of von Willebrand factor (VWF), platelet factor 4 (PF4), serum amyloid A (SAA), α-2 antiplasmin (α-2AP), endothelial-leukocyte adhesion molecule 1 (E-selectin), and platelet endothelial cell adhesion molecule (PECAM-1) in the soluble part of the blood. It was noteworthy that the mean level of α-2 antiplasmin exceeded the upper limit of the laboratory reference range in Long COVID patients, and the other 5 were significantly elevated in Long COVID patients as compared to the controls. This is alarming if we take into consideration that a significant amount of the total burden of these inflammatory molecules has previously been shown to be entrapped inside fibrinolysis-resistant microclots (thus decreasing the apparent level of the soluble molecules). We conclude that presence of microclotting, together with relatively high levels of six biomarkers known to be key drivers of endothelial and clotting pathology, points to thrombotic endothelialitis as a key pathological process in Long COVID.
A compact and versatile cryogenic probe station for quantum device testing
Authors: de Kruijf Mathieu , Geyer Simon , Berger Toni , Mergenthaler Matthias , Braakman Floris , Warburton Richard J. , Kuhlmann Andreas V. 
Published: May 2023

Fast feedback from cryogenic electrical characterization measurements is key for the development of scalable quantum computing technology. At room temperature, high-throughput device testing is accomplished with a probe-based solution, where electrical probes are repeatedly positioned onto devices for acquiring statistical data. In this work, we present a probe station that can be operated from room temperature down to below 2 K. Its small size makes it compatible with standard cryogenic measurement setups with a magnet. A large variety of electronic devices can be tested. Here, we demonstrate the performance of the prober by characterizing silicon fin field-effect transistors as a host for quantum dot spin qubits. Such a tool can massively accelerate the design–fabrication–measurement cycle and provide important feedback for process optimization toward building scalable quantum circuits.