bluuebunny/crossref_metadata_2025_split huggingface dataset:
HST Low-resolution Stellar Library
Authors: Pal Tathagata , Khan Islam , Worthey Guy , Gregg Michael D. , Silva David R. 
Published: June 2023

Abstract
In order to provide fundamental stellar spectra that extend into the UV, Hubble Space Telescope’s Space Telescope Imaging Spectrograph targeted 556 stars via proposals GO9088, GO9786, GO10222, and GO13776. Exposures through three low-resolution gratings provide wavelength coverage from 0.2 < λ < 1 μm at λ/Δλ ∼ 1000. The UV grating (G230LB) scatters red light that results in unwanted signal, especially in cool stars. We applied scattered-light corrections and flux corrections arising from pointing errors relative to the center of the 0.″2 slit based on Worthey et al. We present 513 fully reduced stellar spectra, fluxed, dereddened, and cross correlated to zero velocity. Because of the broad spectral range, we can simultaneously study Hα and Mg ii
λ2800, indicators of chromospheric activity. Their behaviors are decoupled. Besides three cool dwarfs and one giant with mild flares in Hα, only Be stars show strong Hα emission. Mg2800 emission, however, strongly anticorrelates with temperature such that warm stars show absorption and stars cooler than 5000 K universally show chromospheric emission regardless of dwarf/giant status or metallicity. Transformed to Mg2800 flux emerging from the stellar surface, we find a correlation with temperature with approximately symmetric astrophysical scatter. Previous work had indicated a basal level with asymmetric scatter to strong values. The discrepancy is primarily due to our improved treatment of extinction. We confirm statistically significant time variability in Mg2800 strength for one star.
No Surviving SN Ia Companion in SNR 0509-67.5: Stellar Population Characterization and Comparison to Models
Authors: Shields Joshua V. , Arunachalam Prasiddha , Kerzendorf Wolfgang , Hughes John P. , Biriouk Sofia , Monk Hayden , Buchner Johannes 
Published: June 2023

Abstract
The community agrees that Type Ia supernovae arise from carbon/oxygen white dwarfs undergoing thermonuclear runaway. However, the full progenitor system and the process that prompts the white dwarf to explode remain unknown. Most current models suggest that the white dwarf explodes because of interaction with a binary companion that may survive the process and remain within the resulting remnant of the exploded star. Furthermore, both the pre-supernova interaction process and the explosion of the primary are expected to imprint a significant departure from ordinary stellar radii and temperatures onto the secondary, making the star identifiable against the unrelated stellar population. Identification of a surviving companion inside an SN Ia remnant might confirm a specific corresponding SN Ia progenitor channel based on the identity of the companion. We conducted a surviving companion search of the Type Ia remnant SNR 0509−67.5 based in the Large Magellanic Cloud. The well-constrained distance to and foreground extinction of the Large Magellanic Cloud allow for Bayesian inference of stellar parameters with low correlation and uncertainties. We present a deep catalog of fully characterized stars interior to SNR 0509−67.5 with radii, effective temperatures, and metallicities inferred using combined Hubble Space Telescope photometric observations across multiple visits. We then compile a list of surviving companion models appropriate for the age of the remnant (roughly 400 yr after the explosion). We compare these predictions with the inferred stellar parameters and conclude that none of the stars are consistent with the predicted signatures of a surviving companion.
Occurrence and Evolution of Switchbacks in the Inner Heliosphere: Parker Solar Probe Observations
Authors: Jagarlamudi Vamsee Krishna , Raouafi N. E. , Bourouaine S. , Mostafavi P. , Larosa A. , Perez J. C. 
Published: June 2023

Abstract
Since its launch in 2018, the Parker Solar Probe (PSP) mission revealed the presence of numerous fascinating phenomena occurring closer to the Sun, such as the presence of ubiquitous switchbacks (SBs). The SBs are large magnetic field deflections of the local magnetic field relative to a background field. We investigated the statistical properties of the SBs during the first 10 encounters between 13.28 and 58 solar radii (R
⊙) using data from the SWEAP and FIELDS suites on board PSP. We find that the occurrence percentage of small deflections with respect to the Parker spiral decreases with radial distance (R). In contrast, the occurrence percentage of the large deflections (SBs) increases with R, as does the SB patches. We also find that the occurrence of SBs correlates with the bulk velocity of the solar wind, i.e., the higher the solar wind velocity, the higher the SB occurrence. For V
sw ≤ 400 km s−1, the SB occurrence percentage shows a constantly increasing trend between 13 and 58 R
⊙. However, for V
sw > 400 km s−1, the occurrence percentage saturates beyond 35 R
⊙. The occurrence percentage of mini SB patches (<60 s) shows a decreasing trend with R, while the occurrence percentage of long-duration SB patches (>200 s) increases with R. Sub-Alfvénic regions that we analyzed during Encounters 8–10 have not shown any SBs. This analysis of the PSP data hints that some of the SBs are decaying and some are being created in situ.
Mutations et satisfaction au travail en protection de l’enfance : le cas des assistants familiaux
Authors: Chapon Nathalie 
Published: June 2023

L’article propose une analyse du travail social plus particulièrement dans le champ de la protection de l’enfance, à partir d’une enquête réalisée sous la forme d’un baromètre auprès des assistants familiaux afin de mieux comprendre leurs conditions de travail et leur qualité de vie au travail. Il s’appuie sur une recherche quantitative réalisée auprès de 2 680 assistants familiaux. Deux perspectives sont abordées : l’une concerne leur profil sociologique en fonction de la satisfaction éprouvée au travail ; l’autre aborde leurs conditions d’exercice de la profession et la qualité de vie qui y est liée. Les assistants familiaux sont-ils heureux dans leur métier ?
Dématérialisation des droits sociaux : le travail social recomposé
Authors: Bickel Jean-François , Vatron-Steiner Béatrice 
Published: June 2023

L’article se réfère à une recherche menée dans le canton de Fribourg, en Suisse, concernant le processus de dématérialisation de l’administration et des services d’intérêt général, et prend appui sur un corpus de 23 entretiens individuels semi-directifs. Il examine les transformations que ce processus produit chez des travailleuses sociales de première ligne opérant dans deux champs de politique et d’intervention sociale : le chômage et l’insertion professionnelle d’un côté, l’aide et l’insertion sociale de l’autre. Il montre que tant le faisceau des tâches que le rôle des professionnelles sont recomposés par la mutation en cours. Il met aussi en évidence que si les travailleuses sociales répondent bel et bien en pratique aux demandes et attentes de soutien – y compris en inventant des formes d’accompagnement originales –, ce n’est pas sans être associées à des tensions dans leur professionnalité et à une dépréciation de la valeur centrale de la singularité.
Culture et plurilinguisme
Authors: Slim-hoteit Ilham 
Published: June 2023

La mia proposta ha con oggetto l’analisi delle difficoltà di lessico, semantica e sintassi e soprattutto di cultura che ho dovuto affrontare da traduttrice del libro Fragments d'un discours amoureux di Roland Barthes 1 . Se i motivi collegati alle differenze delle strutture mentali, linguistiche e culturali costituiscono un freno alla traduzione, il mio compito era doppiamente difficile, per la semplice ragione che Barthes applicando la sua teoria dell’intertesto "ogni testo è un intertesto" ha preso da diverse culture : latina, greca, germanica, spagnola, inglese, orientale e ha stabilito dei rapporti intertestuali moltodiversi non soltanto tra i diversi testi letterari di Goethe, Nietzsche, Rilke, Balzac, Baudelaire, Freud, Proust ecc… ma anche tra questi testi e l’arte in generale come la musica, la pittura, e la scultura… Come rendere questa complessità culturale in arabo senza tradire il testo di base ? la mia comunicazione cerca di risponderci, basandosi sul paragone di esempi precisi presi dal testo di partenza (il testo francese) e dal testo di lingua meta (il testo arabo).
La coopétition dans un processus de fusion : les régulateurs et la gestion des tensions coopétitives
Authors: Thelisson Anne-Sophie 
Published: June 2023

Des tensions coopétitives peuvent apparaître lorsque des décisions stratégiques sont imposées aux entreprises qui les obligent à rechercher la concurrence et la collaboration avec d’autres organisations. Les régulateurs, tels que l’État, peuvent interférer dans les stratégies de fusion. Basée sur une étude de cas longitudinale, la présente étude a pour objectif : (1) d’analyser quels régulateurs influencent les tensions coopétitives dans les processus de fusion (y compris les étapes de négociation et d’intégration) ; et (2) d’explorer comment les tensions coopétitives sont gérées au cours du processus. Nous avons constaté que l’État et les clients jouent un rôle architectural en tant que régulateurs au cours du processus (période de négociation, accord et processus d’intégration). Nous examinons la gestion du paradoxe de la coopétition à différents niveaux (interorganisationnel, organisationnel et individuel) au cours du processus de fusion. Remarques à l’intention des praticiens Notre étude met en lumière les tensions vécues par les cadres aux identités contradictoires au début de l’intégration et la manière dont ils ont fait face à ces tensions. En effet, notre étude a mis en lumière le principe d’intégration puisque les managers ont pu transcender le paradoxe dans leurs décisions et actions mises en œuvre au niveau organisationnel en réorganisant l’organisation et en favorisant les équipes en tandem et le pilotage conjoint.
John Dewey : une porte ouverte sur l’économie des émotions
Authors: Petit Emmanuel , Ballet Jérôme 
Published: June 2023

L’influence du pragmatisme sur l’institutionnalisme, et notamment sur celui de John Commons, est désormais largement reconnue. En particulier, l’importance des règles et des habitudes dans les comportements a été bien mis en évidence dans le pragmatisme. Néanmoins, l’importance, dans ce courant de pensée, de la réflexion sur la bifurcation ou la rupture par rapport aux règles et aux habitudes a été minorée. Cet article souligne que John Dewey, un des pragmatistes les plus influents, a pensé ces transformations. Celles-ci sont analysées chez lui à partir de trois concepts clés : l’expérience, la transaction et l’émotion. Il en découle une nouvelle piste de réflexion pour l’analyse économique, en particulier dans le rôle que les émotions peuvent jouer dans les changements par rapport aux règles et aux habitudes de comportement. Dewey nous invite ainsi à une économie de l’émotion plus riche que ce que l’analyse économique n’a produit pour l’instant. Classification JEL : B25, B40.
Proche aidance d’aînés et appartenance ethnoculturelle au Québec : l’apport d’une analyse quantitative
Authors: Mezdour Amina , Koba Éric 
Published: June 2023

Introduction : Le nombre de proches aidants d’aînés est appelé à augmenter en raison du vieillissement démographique mondial, et ce particulièrement dans les pays où persiste un manque de professionnels de la santé, comme au Québec (Canada). Dans une société construite sur l’immigration, il est plus que pertinent de se questionner quant à la prévalence du rôle des proches aidants dans les communautés ethnoculturelles issues de l’immigration. Jusqu’à ce jour, aucune étude quantitative n’a été effectuée à leur sujet au Québec. C’est entre autres ce manque que vise à combler notre étude. But de l’étude : Explorer l’influence de l’appartenance ethnoculturelle en contexte migratoire sur la probabilité de devenir un proche aidant au Québec. Résultats : Les chances de devenir un proche aidant sont élevées pour les personnes nées au Canada qui participent à des activités religieuses, notamment celles qui sont de sexe féminin. Conclusions : Il existe un lien statistiquement significatif entre le rôle de proche aidant et le lieu de naissance. Les personnes nées à l’extérieur du Canada ont moins de chances d’acquérir ce rôle ultérieurement, reflétant les biais des politiques d’immigration canadiennes.
La città che sale
Authors: David Massimiliano , De Togni Stefano , Graziano Maria Stella 
Published: June 2023

Il progressivo innalzamento dei livelli d’uso nei contesti urbani è un fenomeno ben documentato archeologicamente. A Ostia questo fenomeno assume una visibilità del tutto particolare. Le ricerche del Progetto Ostia Marina permettono di aggiungere ulteriori elementi di riflessione a questa complessa tematica. I dati disponibili riguardano in particolare il Caseggiato delle due scale, le Terme del Sileno, le Terme della Marciana e l’edificio IV, ix, 5. Le indagini hanno offerto nuove acquisizioni sulle prime fasi di urbanizzazione del quartiere, risalenti al I sec. d.C., poi obliterate dalle costruzioni successive. Le quote ottenute dallo scavo stratigrafico sono state confrontate con quelle ricavabili dagli edifici già scavati e hanno offerto l’opportunità di ricostruire un quadro più ampio e articolato del fenomeno.
Corps animaux et poisons
Authors: Bouliau Damien 
Published: June 2023

Un lien entre poisons et corps animaux est effectué durant toute l’époque moderne. Les traités toxicologiques du xvie siècle montrent l’ambiguïté des corps animaux en matière de poison et associent animaux familiers et légendaires comme le basilic. À partir du xviie siècle, les savoirs toxicologiques et juridiques se naturalisent avec un double processus de mutation des savoirs toxicologiques et de sécularisation du crime de sorcellerie. Les savants italiens, anglais et français expérimentent les poisons sur les animaux afin d’en déterminer les effets. Le cas du parlement de Toulouse permet d’observer les différentes transformations des poisons dans les procédures pour sorcellerie et la place des corps animaux. Avec la dédiabolisation du poison, il devient possible de trouver les signes de l’empoisonnement dans le cadavre de la victime ou en testant la toxicité des substances ingérées sur des animaux. Les sources présentent la marginalité de ces pratiques en France. La médecine légale et la toxicologie n’en sont encore qu’à leur protohistoire.
Daders
Authors: Crahay Frédéric 
Published: June 2023

De dader of beul heeft altijd gefascineerd en angst aangejaagd. De daders van massamisdaden zijn diegenen die de vernietiging van een specifieke groep uitvoeren, vergemakkelijken of bevelen.Nummer 100 van Getuigen, dat in september 2008 verscheen, boog zich over nazi-beulen. Dit dossier biedt de lezer een historische en criminologische benadering van andere genocides van de 20e eeuw.
“Der Vortrupp, das warst eigentlich nur Du.” Een Antwerpse exiluitgeverij die er geen was
Authors: Judo Frank 
Published: June 2023

Gedurende een bijzonder korte periode (1939) was uitgeverij Vortrupp in Antwerpen actief. De conservatieve joodse uitgever Hans Joachim Schoeps (1909-1980) ontvluchtte Duitsland in 1938 – zijn beide ouders zouden in de Holocaust omkomen. Historicus en (kerk-)jurist Frank Judo schetst Schoeps’ calvarietocht door België en Nederland om de Berlijnse uitgeverij in ballingschap nieuw leven in te blazen. Judo beroept zich daarvoor op ongepubliceerd bronnenmateriaal, dat hij in de Berliner Staatsbibliothek terugvond.
Comparative evaluation of dentinal penetration of sealer with extracanal and intracanal heating of sodium hypochlorite: An in vitro study
Authors: Ahuja Kritika , Jaiswal Shikha , Nikhil Vineeta , Gupta Sachin 
Published: June 2023

ABSTRACT

Aim:
The aim of this study was to evaluate and compare the depth and percentage of sealer penetration into dentinal tubules using extracanal and intracanal heated NaOCl in the irrigation protocol using a confocal laser scanning microscope.

Methods:
Thirty extracted central incisors prepared till F4 ProTaper Gold were randomly distributed into three groups (n = 10 each) depending on the final irrigation protocol. Group C – nonheated 3% NaOCl, group EC – extracanal heated 3% NaOCl, and group IC – intracanal heated 3% NaOCl. Final irrigation with different warming protocols along with sonic activation was performed. Canals were obturated with standardized F4 Protaper Gold gutta-percha cone coated with AH Plus sealer labeled with Rhodamine B dye. The transverse sections of samples at different levels were examined on a confocal microscope and analyzed using IOB software. Unpaired “t” test and Mann–Whitney U test were used for intergroup comparison; P < 0.05.

Results:
The percentage of sealer penetration was significantly lower in group C as compared to group IC and EC at the coronal and middle third. Group C showed a lower depth of sealer penetration as compared to group EC and IC at all levels. The percentage and depth of sealer penetration were not significantly different between group EC and IC at all levels.

Conclusion:
Extracanal and intracanal heating of NaOCl significantly improves the percentage and depth of AH Plus sealer penetration in dentinal tubules.
Evaluation of antimicrobial efficacy of herbal extracts and their effect on the surface characteristics of gutta-percha cones: An in vitro study
Authors: Shetty Anshuman , Rai Shivprasad , Sudhakar Shetty Suhani 
Published: June 2023

ABSTRACT

Aim:
The aim was to evaluate the antimicrobial efficacy of herbal extracts of Origanum vulgare (Oregano) and Vaccinium (Cranberry) for disinfection of gutta-percha (GP) and their effects on surface of GP.

Methods:
A total of 84 GP points were divided into three groups. Group A (36 cones) was artificially contaminated by Staphylococcus aureus (SA), Group B (36 cones) by Enterococcus faecalis (EF), and Group C (12 cones) by both the organisms each. After the contamination of all the groups, all the points in Groups A and B were divided into three groups of 12 each and were disinfected by four different concentrations of Origanum vulgare and Vaccinium extracts, contaminated but not disinfected and was used as control. The Group C GP points were all disinfected by 3% sodium hypochlorite (NaOCl). All the disinfected and the control group samples were then incubated to detect bacterial growth. Minimum inhibitory concentration and minimum bactericidal concentration were determined for all the groups of O. vulgare and Vaccinium at all the concentrations. P < 0.05.

Results:
The present study showed a significantly higher bacteriostatic and bactericidal activity with O. vulgare extract followed by NaOCl as compared to Vaccinium extract against SA and EF. Furthermore, higher surface alterations were seen on GP disinfected with NaOCl and the least with O. vulgare.

Conclusion:
Considering the amount of surface changes caused by NaOCl on GP when used as a disinfecting solution, O. vulgare extract is a suitable herbal substitute for the same which shows comparatively much lesser topographic changes.
Evaluation of interorifice distance in permanent mandibular first molar with middle mesial canal in Bengaluru city, Karnataka: A cone-beam computed tomography study
Authors: Mahajan Shruthika , Meena N. , Rangappa Anithakumari , Mashood Ali Mohammed , Murthy Chethana , Lokapriya M. 
Published: June 2023

ABSTRACT

Aim:
Analysis of interorifice distance (IOD) between mesiobuccal and mesiolingual canals in the presence of middle mesial canal (MMC) variants in mandibular first permanent molar (MFPM) in an Indian subpopulation. To categorically assess the prevalence of MMC variants considering variation in factors of age and gender.

Methods:
Analysis of preoperative cone-beam computed tomography (CBCT) images was performed on 256 MFPM. MMCs were classified as fin, confluent, or independent as per the classification given by Pomeranz et al. (1981). Orthogonal slices from pulpal floor to 4 mm below were used to measure mean IOD using the CBCT software tool. Data were subjected to descriptive statistics. The Chi-square test was used for further analysis.

Results:
The prevalence of independent MMC was 4.7% (n = 12), confluent 14.6% (n = 37), and fin 8.7% (n = 22). The mean IOD measured for fin variant was 3.12 ± 0.512 mm, 3.31 ± 0.402 mm for confluence variant, 3.72 ± 0.493 mm for independent MMC, and 3.36 mm ± 0.579 for two-canal variant. Significant association (P = 0.001) was observed between age, gender, and overall detection of MMC, wherein the presence of fin (8.6%) and confluent (12.9%) configurations was higher (P = 0.003) in individuals ≤40 years. There was increased IOD in females (17.9%) than males (10.3%), for confluent, independent, and two-canal configuration (P = 0.04; =0.01, =0.001). Decreased IOD was observed in individuals >40 years for two-canal configurations (P = 0.05).

Conclusion:
Preoperative CBCT assessment of MFPM aids in the detection of MMC. According to the results of this study, individuals aged ≤40 years have shown higher prevalence of fin and confluent variants. Increased IOD was seen in females for confluent, independent, and two-canal configurations. Decreased IOD was seen in individuals aged >40 years having two-canal configuration. Thus, root canal complexities vary with age and gender, and should be taken into consideration before endodontic treatment.
Comparison of postoperative pain in single visit endodontics using heat-treated nickel − titanium file systems – A randomized clinical trial
Authors: Unnikrishnan Priyanka , Mandke Lalitagauri , Padhye Leena 
Published: June 2023

ABSTRACT

Aim:
The aim of the present study was to compare postoperative pain in single visit endodontics using heat-treated nickel − titanium file systems (ProTaper Gold, HyFlex EDM, V Taper 2H).

Methods:
Sixty patients requiring endodontic treatment in vital permanent lower molars with irreversible pulpitis were included in the study. Patients were divided into three groups each containing 20 patients: Group 1 teeth prepared with ProTaper Gold (Dentsply), Group 2 HyFlex EDM (Coltene), and Group 3-V Taper 2H (SS WHITE). Treatment was performed in a single visit. The severity of the postoperative pain was assessed by the Visual Analog Scale after 2, 4, 8, 12, 24, and 48 h. Data were analyzed using the Kruskal–Wallis tests.

Results:
There was no significant difference in the incidence of postoperative pain among the three groups. There was significant reduction in pain from preoperative till the end of 2 days, irrespective of the file systems used. When compared between the three groups. There was no significant difference in pain scores at different time intervals. When change in pain from preoperative to different time intervals was compared, there was no significant difference between all three groups. V Taper 2H files showed increased pain scores from 4 to 12 h, however, the pain reduced thereafter till 48 h with no significant statistical difference.

Conclusion:
Results of this in vivo study showed that there was no significant difference in the incidence of postoperative pain among the three groups.