bluuebunny/crossref_metadata_2025_split huggingface dataset:
GW190521 May Be an Intermediate-mass Ratio Inspiral
Authors: Nitz Alexander H. , Capano Collin D. 
Published: January 2021

Abstract
GW190521 is the first confident observation of a binary black hole merger with total mass

. Given the lack of observational constraints at these masses, we analyze GW190521 considering two different priors for the binary’s masses: uniform in mass ratio and source-frame total mass, and uniform in source-frame component masses. For the uniform in mass-ratio prior, we find that the component masses are

and

. The uniform in component-mass prior yields a bimodal posterior distribution. There is a low-mass-ratio mode (

) with

and

and a high-mass-ratio mode (

) with

and

. Although the two modes have nearly equal posterior probability, the maximum-likelihood parameters are in the high-mass-ratio mode, with

and

, and a signal-to-noise ratio of 16. These results are consistent with the proposed “mass gap” produced by pair-instability in supernovae. Our results differ from those published in Abbott et al. We find that a combination of the prior used and the constraints applied may have prevented that analysis from sampling the high-mass-ratio mode. An accretion flare in AGN J124942.3+344929 was observed in possible coincidence with GW190521 by the Zwicky Transient Facility. We report parameters assuming a common origin; however, the spatial agreement of GW190521 and the electromagnetic flare alone does not provide convincing evidence for the association (

).
Homologous Flaring Activity over a Sunspot Light Bridge in an Emerging Active Region
Authors: Louis Rohan Eugene , Thalmann Julia K. 
Published: January 2021

Abstract
Sunspot light bridges are known to exhibit a variety of dynamic and persistent phenomena such as surges, small-scale jets, etc., in the chromosphere and transition region. While it has generally been proposed that magnetic reconnection is responsible for this small-scale dynamism, persistent flaring activity lasting several hours from the same spatial location on a sunspot light bridge has rarely been reported. We combine observations from the Atmospheric Imaging Assembly and the Helioseismic Magnetic Imager on board the Solar Dynamics Observatory to investigate homologous flaring activity over a small sunspot light bridge in an emerging flux region. The homologous flares all produced broad, collimated jets including a B6.4 class flare. The jets rise at a speed of about 200 km s−1, reach projected heights of about 98 Mm, and emerge from the same spatial location for nearly 14 hrs, after which they cease completely. A nonlinear force-free extrapolation of the photospheric magnetic field shows a low-lying flux rope connecting the light bridge to a remote opposite-polarity network. The persistent flares occur as a result of the rapid horizontal motion of the leading sunspot that causes the relatively vertical magnetic fields in the adjacent umbra to reconnect with the low-lying flux rope in the light bridge. Our results indicate that the flaring ceases once the flux rope has lost sufficient twist through repeated reconnections.
Deep Optical Observations Contemporaneous with Emission from the Periodic FRB 180916.J0158+65
Authors: Kilpatrick Charles D. , Burchett Joseph N. , Jones David O. , Margalit Ben , McMillan Russet , Fong Wen-fai , Heintz Kasper E. , Tejos Nicolas , Escorial Alicia Rouco 
Published: January 2021

Abstract
We present deep Apache Point Observatory optical observations within seconds of radio emission from the periodic fast radio burst (FRB) 180916.J0158+65 obtained on 2020 September 3. FRB 180916.J0158+65 is located in a nearby spiral galaxy 150 Mpc away and has an “active phase” with a well-measured period of approximately 16.3 days. Targeting the FRB at the peak of its expected active phase and during a recent 30 minute observing window by the Canadian Hydrogen Intensity Mapping Experiment (CHIME) in which a radio burst was detected, we did not detect any transient optical emission at

≈ 24.7 mag (3σ) from 2.2 to 1938.1 s after the burst arrival time in optical bands (corrected for dispersion). Comparing our limiting magnitudes to models of a synchrotron maser formed in the circumburst environment of FRB 180916+J0158.65, we constrain scenarios where the burst energy was

erg and the circumburst density was >104 cm−3.
Prevalence of Nonradiographic Sacroiliitis in Patients With Psoriatic Arthritis: A Real-life Observational Study
Authors: Furer Victoria , Levartovsky David , Wollman Jonathan , Wigler Irena , Paran Daphna , Kaufman Ilana , Elalouf Ofir , Borok Sara , Anouk Marina , Sarbagil-Maman Hagit , Berman Mark , Polachek Ari , Matz Hagit , Flusser Gideon , Druckmann Ido , Eshed Iris , Elkayam Ori 
Published: January 2021

Objective.To establish the prevalence of nonradiographic sacroiliitis within a real-life sample of patients with psoriatic arthritis (PsA), using pelvic radiographs and magnetic resonance imaging (MRI) of sacroiliac joints (SIJs).Methods.This cross-sectional study included 107 consecutive adults with PsA (Classification Criteria for Psoriatic Arthritis criteria). Participants completed clinical and laboratory evaluation, pelvic radiographs scored for radiographic sacroiliitis according to the modified New York (mNY) criteria, and noncontrast MRI of SIJs, scored by the Berlin score and categorized into active sacroiliitis using the 2016 Assessment of Spondyloarthritis international Society (ASAS) criteria and the presence of structural sacroiliitis.Results.Radiographic sacroiliitis/mNY criteria were detected in 28.7% (n = 29), confirmed by MRI-detected structural lesions in 72.4% (n = 21). Active sacroiliitis was detected by MRI in 26% (n = 28) of patients, with 11% (n = 11) qualifying for nonradiographic sacroiliitis. Patients with radiographic and nonradiographic sacroiliitis had similar clinical characteristics, except for a longer duration of psoriasis (PsO) and PsA in the radiographic subgroup (PsO: 23.8 ± 12.5 vs 14.1 ± 11.7 yrs, P = 0.03; PsA: 12.3 ± 9.8 vs 4.7 ± 4.5 yrs, P = 0.02, respectively). Inflammatory back pain (IBP) was reported in 46.4% (n = 13) with active sacroiliitis and 27% (n = 3) with nonradiographic sacroiliitis. The sensitivity of IBP for detection of nonradiographic sacroiliitis was low (27%) and moderate for radiographic sacroiliitis (52%), whereas specificity ranged from 72% to 79% for radiographic and nonradiographic sacroiliitis, respectively.Conclusion.The prevalence of active sacroiliitis among a real-life population of patients with PsA was 26%. However, the prevalence of nonradiographic sacroiliitis was low (11%) compared to the radiographic sacroiliitis (28.7%) seen in patients with longer disease duration. IBP was not a sensitive indicator for the presence of early-stage sacroiliitis that was commonly asymptomatic.
Assessment of Widespread and Extraarticular Pain in Psoriatic Arthritis: A Case-control Study
Authors: Lubrano Ennio , Scriffignano Silvia , Morelli Romeo , Perrotta Fabio Massimo 
Published: January 2021

ObjectiveA remarkable lack of detailed knowledge on pain areas in psoriatic arthritis (PsA) is present, and their clinical relevance is quite unknown. The main aim of the study was to explore pain areas in PsA, comparing them with those involved in patients with fibromyalgia (FM). In addition, a secondary aim was to investigate any possible association between pain areas and outcome measures in PsA.MethodsThis was a case-control study on patients with PsA satisfying Classification Criteria for Psoriatic Arthritis criteria and patients with FM. In all patients with PsA and FM, a body chart filled in by the patient reporting pain areas in 80 body locations was performed. The Widespread Pain Index (WPI) was performed in all patients with PsA and FM. In all patients with PsA, an assessment of disease activity, treatment target, function, and impact of disease was carried out.ResultsFifty patients with PsA and 50 FM controls were evaluated. A significantly higher number of pain areas in the body chart and higher WPI scores were found in patients with FM when compared to patients with PsA. In PsA, the number of areas reported in the body chart significantly correlated with the Disease Activity Index for PsA, Health Assessment Questionnaire–Disability Index, and PsA Impact of Disease. Patients who showed a significantly high number of extraarticular pain areas involved were those who were not in remission/minimal disease activity, or who did not have a greater impact of disease or reduced function.ConclusionThe main results showed that widespread and extraarticular pain was present in patients with PsA, showing that this nonarticular pain had an impact on important disease domains. The present study could contribute to an important aspect of this challenging and multifaceted disease—namely, the assessment of widespread pain.
A Review of Preceptorship in Undergraduate Nursing Education: Implications for Staff Development
Authors: Letizia Marijo , Jennrich Judith 
Published: January 2021

ABSTRACT
Nurse educators regularly develop clinical learning experiences for undergraduate students using the expertise of experienced RNs as preceptors. Preceptors help students develop a knowledge base and clinical skills. This article reports a literature review and summarizes the benefits of preceptorship, outlines preceptor responsibilities and qualities, and discusses the process of preceptor selection and role preparation. Suggestions for collaborative efforts regarding the preceptor experience among staff nurses, nurse educators, and staff development educators are highlighted.
Éduquer à la condition terrestre
Authors: Pellaud Francine , Eastes Richard-Emmanuel 
Published: January 2021

Si le développement durable a réussi l’exploit de s’immiscer jusqu’au sein de l’économie et que son éducation a investi la plupart des programmes scolaires, force est de constater que, près de 30 ans plus tard, extinctions massives, pollutions, disparités sociales, catastrophes écologiques et surexploitations sont notre pain quotidien. Ce résultat, contre-productif et alarmant, n’est-il pas à attribuer à un concept qui a endormi les consciences plutôt que de les réveiller ? Dès lors quelles sont les questions fondamentales qui doivent guider notre réflexion en tant que penseurs de l’éducation ? Quelle est notre place face à une urgence qui ne peut plus se satisfaire de beaux discours ?
A chronological résumé of furniture by Boulle no longer in France, with a focus on the United Kingdom
Authors: Jackson Mia 
Published: January 2021

The furniture of André-Charles Boulle is often inextricably linked to the court of Louis XIV and Versailles. Yet this would appear to be something of a mischaracterisation, for only a small percentage of pieces of furniture attributed to Boulle were made for Versailles (and even then, for the Grand Trianon or the Ménagerie rather than the main palace). Indeed, what is surprising for objects so often characterised as the nec plus ultra of French craftsmanship is how internationally travelled they are, and how often their first non-French residence was England.
Identification et provenance de l’écaille de tortue marine en circulation au début du xviiie siècle
Authors: Soulat Jean 
Published: January 2021

Entre la fin du xviie et le début du xviiie siècle, les ébénistes parisiens ont utilisé l’écaille de tortue pour orner leur production revêtue de marqueterie Boulle. D’après les archives, il apparaît que cette écaille provenait de tortues marines pêchées dans la mer des Antilles. Débitées sur place, elles étaient acheminées en France par un réseau d’approvisionnement maîtrisé entre la métropole et ses colonies outre-Atlantique. Grâce aux recherches archéologiques et aux analyses archéométriques, on sait désormais que la plupart des écailles employées en France, notamment dans la décoration de mobilier, provenait de la carapace de tortues imbriquées.
Archaeometric investigations of the materials and techniques of two red figured kraters by the Painter of Louvre K 240
Authors: Conventi Alberto , D’Ignoti Katia , Lazzarini Lorenzo , Tesser Elena 
Published: January 2021

Two very important red figured vases by the Painter of Louvre K 240 – the Acrobat krater preserved in the L. Bernabò-Brea Regional Archaeological Museum of Lipari (Sicily), and the Fleischman krater of the J. Paul Getty Villa (Malibu, Los Angeles) – were submitted to stylistic and archaeometric examination, the latter by powder-XRD, OM on thin sections, SEM + EDS on polished sections, and FTIR to characterise the component materials (ceramic body, black glosses, pigments and media) and the manufacturing technique. The results indicate an identical illitic, slightly calcareous clay used for the manufacture of both vases that were then painted with a very similar slip, then turned a gloss black by firing in a reducing atmosphere. The provenance of the clay could not be precisely determined so far. Both kraters were also painted with a very similar technique, so that it may be concluded that they were produced by the same artist in a unique atelier yet to be identified.
Seasonal emergence patterns ofSitodiplosis mosellana(Diptera: Cecidomyiidae) in the Peace River region, Alberta, Canada
Authors: Jorgensen Amanda , Evenden Maya L. , Olfert Owen , Otani Jennifer 
Published: January 2021

AbstractWheat midge,Sitodiplosis mosellanaGéhin (Diptera: Cecidomyiidae), is an invasive pest of wheat,Triticumspp. (Poaceae), in North America and is found in all wheat-growing regions of the world. Wheat midge biology, particularly post-diapause emergence of adults, varies with geographic region. The biology of wheat midge has not previously been examined in the northernmost area of its range in Canada – the Peace River region of Alberta. Wheat midge adult emergence was comparedin situto two phenological models of wheat midge emergence developed in other geographic regions. In-field adult emergence did not match the published phenological models. In the Peace River region, adults emerged later than are predicted by both models and precision for both models was low. With the Saskatchewan model, accumulated rainfall that was more than 110 mm in May and early June delayed emergence, whereas accumulated rainfall that was less than 43 mm during that period caused earlier than predicted emergence. Multiple peaks of wheat midge emergence, up to 20 days apart, were observed at some sites, supporting the Jacquemin model depicting “waves” of emergence. Including differences in soil temperature accumulation related to precipitation and optimising the model temperature thresholds would improve accuracy of the current Canadian phenological model in the Peace River region.
Histidine-Rich Glycoprotein Stimulates Human Neutrophil Phagocytosis and Prolongs Survival through CLEC1A
Authors: Takahashi Yohei , Wake Hidenori , Sakaguchi Masakiyo , Yoshii Yukinori , Teshigawara Kiyoshi , Wang Dengli , Nishibori Masahiro 
Published: January 2021

Abstract
Histidine-rich glycoprotein (HRG) is a multifunctional plasma protein and maintains the homeostasis of blood cells and vascular endothelial cells. In the current study, we demonstrate that HRG and recombinant HRG concentration dependently induced the phagocytic activity of isolated human neutrophils against fluorescence-labeled Escherichia coli and Staphylococcus aureus through the stimulation of CLEC1A receptors, maintaining their spherical round shape. The phagocytosis-inducing effects of HRG were inhibited by a specific anti-HRG Ab and enhanced by opsonization of bacteria with diluted serum. HRG and C5a prolonged the survival time of isolated human neutrophils, in association with a reduction in the spontaneous production of extracellular ROS. In contrast, HRG maintained the responsiveness of neutrophils to TNF-α, zymosan, and E. coli with regard to reactive oxygen species production. The blocking Ab for CLEC1A and recombinant CLEC1A-Fc fusion protein significantly inhibited the HRG-induced neutrophil rounding, phagocytic activity, and prolongation of survival time, suggesting the involvement of the CLEC1A receptor in the action of HRG on human neutrophils. These results as a whole indicated that HRG facilitated the clearance of E. coli and S. aureus by maintaining the neutrophil morphology and phagocytosis, contributing to the antiseptic effects of HRG in vivo.
Assessment of the Level and Factors associated with Knowledge, Attitude and Practice of Blood Donation among Medical and Paramedical Personnel in Alert Hospital, Ethiopia
Authors: Teferi Malese Yeshambaw , Woldesenbet Simon Genet , Feleke Solomon Asnakew , Abebe Ermias Hundito , Adane Hawult Taye , Alemayehu Chalachew Misganaw 
Published: January 2021

Background Though there was a high blood supply need in response to high communicable disease and increased emergency conditions; the practice of health professionals and non-health professionals on voluntary blood donation is still unexpectedly low in Ethiopia. Health professionals and non-health professionals working in the health sectors are pivotal in taking the lead to reverse the effect of inadequate blood supply system in the country. Therefore, the study aimed to understand the level and contributing factors of knowledge, attitude and practice of voluntary blood donation among health and non-health professionals in ALERT Hospital, Addis Ababa, Ethiopia. Design and methods A cross-sectional study design was conducted among health professionals and non-health professionals in ALERT hospital from 5 to 30 June 2018. A total of 394 hospital staffs participated in this study. A well-structured self-administered questionnaire was used to assess the knowledge, attitude, and practice about voluntary blood donation. The statistical analysis was carried out using R. Results A total of 203 (51.5%) participants were females. Only 142(36%) of the participants had voluntary blood donation practice. Among these, 60 (42.3%) of them were donated blood more than once. Occupation is the only factor significantly associated with blood donation practice; health professionals had almost two-fold donation practice than non-health professionals (AOR=1.62; 5% CI: 1.02, 2.57, p=0.042). Occupation has also a strong relationship with knowledge, health professionals had better knowledge than non-professionals with (AOR=2.39; 95% CI: 1.39, 4.12; p=0.002). The result also showed that the educational status of the participants was strongly associated with the blood donors’ attitude with (AOR=3.62; 95%CI: 1.1, 11.93, p=0.035). One hundred and two (72.3%) of the blood donors were motivated to donate blood for charity, 133 (94.3%) individuals were felt good after blood donation and lack of request was the major reason 88.6% that causes the respondents not to donate blood frequently. Conclusions Low blood donation practice of health professionals and non-health professionals was identified from this study. Occupation had significantly associated with blood donation practice. Therefore, targeted interventions aimed at mobilizing hospital staffs and develop accessible blood donation centers are recommended to reverse the effect of inadequate blood supply system in Ethiopia.
A Lagrangian study of the contribution of the Canary coastal upwelling to the nitrogen budget of the open North Atlantic
Authors: Hailegeorgis Derara , Lachkar Zouhair , Rieper Christoph , Gruber Nicolas 
Published: January 2021

Abstract. The Canary Current System (CanCS) is a major eastern boundary upwelling system (EBUS), known for its high nearshore productivity and for sustaining a large fishery. It is also an important but not well quantified source of nitrogen to the adjacent oligotrophic subtropical gyre of the North Atlantic. Here, we use a Lagrangian modeling approach to quantify this offshore transport and investigate its timescales, reach and contribution to the fueling of productivity in the offshore regions. In our Lagrangian model, we release nearly 10 million particles off the northwestern African coast and then track all those that enter the nearshore region and upwell along the coast between 14 and 35∘ N. We then follow them as they are transported offshore, also tracking the biogeochemical transformations, permitting us to construct biogeochemical budgets along the offshore moving particles. The three-dimensional velocity field as well as the biogeochemical tracers and fluxes are taken from an eddy-resolving configuration of the Regional Ocean Modeling System (ROMS). Our Lagrangian model analysis reveals a very intense offshore transport of nitrogen, with about 20 %–40 % in the form of organic nitrogen. The transport varies greatly along the coast. Even though the central CanCS (21–28∘ N) transports the largest amount of water offshore, its offshore transport of nitrogen is somewhat smaller than that in the southern CanCS (14–21∘ N), primarily because of the higher nitrogen content of the upwelling waters there. Around one-third of the total offshore transport of water occurs around major capes along the CanCS. The persistent filaments associated with these capes are responsible for an up to 4-fold enhancement of the offshore transport of water and nitrogen in the first 400 km. Much of this water and nitrogen stems from upwelling at quite some distance from the capes, confirming the capes' role in collecting water from along the coast. North of Cape Blanc and within the first 500 km from the coast, water recirculation is a dominant feature of offshore transport. This process, likely associated with mesoscale eddies, tends to reduce the efficiency of offshore transport. The Canary upwelling is modeled to supply around 44 and 7 mmol N m−2 yr−1 to the North Atlantic Tropical Gyral (NATR) and the North Atlantic Subtropical Gyral East (NASE) Longhurst provinces, respectively. In the NATR, this represents nearly half (53 ± 26 %) of the estimated total new production, while in the NASE, this fraction is small (4 ± 2 %). Our results highlight the importance of the CanCS upwelling as a key source of nitrogen to the open North Atlantic and stress the need for improving the representation of EBUS in global coarse-resolution models.