bluuebunny/crossref_metadata_2025_split huggingface dataset:
Constraining the Gravitational Potential from the Projected Morphology of Extragalactic Tidal Streams
Authors: Nibauer Jacob , Bonaca Ana , Johnston Kathryn V. 
Published: September 2023

Abstract
The positions and velocities of stellar streams have been used to constrain the mass and shape of the Milky Way's dark matter halo. Several extragalactic streams have already been detected, though it has remained unclear what can be inferred about the gravitational potential from only 2D photometric data of a stream. We present a fast method to infer halo shapes from the curvature of 2D projected stream tracks. We show that the stream curvature vector must point within 90° of the projected acceleration vector, in the absence of recent time-dependent perturbations. While insensitive to the total magnitude of the acceleration, and therefore the total mass, applying this constraint along a stream can determine halo shape parameters and place limits on disk-to-halo mass ratios. The most informative streams are those with sharp turns or flat segments, since these streams sample a wide range of curvature vectors over a small area (sharp turns) or have a vanishing projected acceleration component (flat segments). We apply our method to low surface brightness imaging of NGC 5907, and find that its dark matter halo is oblate. Our analytic approach is significantly faster than other stream modeling techniques, and indicates which parts of a stream contribute to constraints on the potential. The method enables a measurement of dark matter halo shapes for thousands of systems using stellar stream detections expected from upcoming facilities like Rubin and Roman.
Photospheric and Chromospheric Magnetic Field Evolution during the X1.6 Flare in Active Region NOAA 12192
Authors: Ferrente F. , Zuccarello F. , Guglielmino S. L. , Criscuoli S. , Romano P. 
Published: September 2023

Abstract
We report on observations acquired by the Interferometric Bidimensional Spectropolarimeter (IBIS) during SOL2014-10-22T14:02, an X1.6 flare that occurred in active region NOAA 12192, taken in the Fe i 617.30 nm and Ca ii 854.2 nm line profiles. We analyze polarization signatures in the Stokes profiles of the two lines across one of the flare ribbons. Focusing our attention on the chromospheric signals and using the weak-field approximation (WFA), we study the temporal variation of the line-of-sight (LOS) magnetic field. We find variations of the magnetic field or the opacity along the flare ribbon, in most cases within the first 3 minutes of the observation just after the flare peak, during the tail of the flare impulsive phase. This result was validated by the STiC inversion of the pixels used for the WFA analysis. The analysis of the photospheric magnetic field shows that in this layer, the LOS magnetic field does not show the same changes observed in the chromosphere in the selected pixels, nor clear evidence of changes along the polarity inversion line around a magnetic polarity intrusion. In this respect, we also find that the temporal observing window is not suitable for assessing the presence of stepwise changes. The nonlinear force-free field extrapolations, together with the analysis of the ribbons’ isophotes obtained from Interface Region Imaging Spectrograph data, suggest that the region corresponding to the magnetic intrusion observed by IBIS is characterized by a complex magnetic connectivity and is almost cospatial with the area affected by the initial energy release.
On the Properties of Inverse Compton Spectra Generated by Upscattering a Power-law Distribution of Target Photons
Authors: Khangulyan Dmitry , Aharonian Felix , Taylor Andrew M. 
Published: September 2023

Abstract
Relativistic electrons are an essential component in many astrophysical sources, and their radiation may dominate the high-energy bands. Inverse Compton (IC) emission is the radiation mechanism that plays the most important role in these bands. The basic properties of IC, such as the total and differential cross sections, have long been studied; the properties of the IC emission depend strongly not only on the emitting electron distribution but also on the properties of the target photons. This complicates the phenomenological studies of sources, where target photons are supplied from a broad radiation component. We study the spectral properties of IC emission generated by a power-law distribution of electrons on a power-law distribution of target photons. We approximate the resulting spectrum by a broken-power-law distribution and show that there can be up to three physically motivated spectral breaks. If the target photon spectrum extends to sufficiently low energies,

ε

min

<

m

e

2

c

4

/

E

max

(m

e
and c are electron mass and speed of light, respectively;

ε

min

and

E

max

are the minimum/maximum energies of target photons and electrons, respectively), then the high-energy part of the IC component has a spectral slope typical for the Thomson regime with an abrupt cutoff close to

E

max

. The spectra typical for the Klein–Nishina regime are formed above

m

e

2

c

4

/

ε

min

. If the spectrum of target photons features a cooling break, i.e., a change of the photon index by 0.5 at ε
br, then the transition to the Klein–Nishina regime proceeds through an intermediate change of the photon index by 0.5 at

m

e

2

c

4

/

ε

br

.
High-energy Neutrino Constraints on Cosmic-Ray Reacceleration in Radio Halos of Massive Galaxy Clusters
Authors: Nishiwaki Kosuke , Asano Katsuaki , Murase Kohta 
Published: September 2023

Abstract
A fraction of merging galaxy clusters host diffuse radio emission in their central region, termed a giant radio halo (GRH). The most promising mechanism of GRHs is the reacceleration of nonthermal electrons and positrons by merger-induced turbulence. However, the origin of these seed leptons has been under debate, and either protons or electrons can be primarily accelerated particles. In this work, we demonstrate that neutrinos can be used as a probe of physical processes in galaxy clusters and discuss possible constraints on the number of relativistic protons in the intracluster medium with the existing upper limits by IceCube. We calculate radio and neutrino emission from massive (>1014
M
⊙) galaxy clusters using the cluster population model of Nishiwaki & Asano. This model is compatible with the observed statistics of GRHs, and we find that the contribution of GRHs to the isotropic radio background observed with the ARCADE-2 experiment should be subdominant. Our fiducial model predicts the all-sky neutrino flux that is consistent with IceCube's upper limit from the stacking analysis. We also show that the neutrino upper limit gives meaningful constraints on the parameter space of the reacceleration model, such as the electron-to-proton ratio of the primary cosmic rays and the magnetic field; in particular, the secondary scenario, where the seed electrons mostly originate from inelastic pp collisions, can be constrained even in the presence of reacceleration.
Gravitational Instability, Spiral Substructure, and Modest Grain Growth in a Typical Protostellar Disk: Modeling Multiwavelength Dust Continuum Observations of TMC1A
Authors: Xu Wenrui , Ohashi Satoshi , Aso Yusuke , Liu Hauyu Baobab 
Published: September 2023

Abstract
Embedded class 0/I protostellar disks represent the initial condition for planet formation. This calls for a better understanding of their bulk properties and the dust grains within them. We model multiwavelength dust continuum observations of the disk surrounding the class I protostar TMC1A to provide insight on these properties. The observations can be well fit by a gravitationally self-regulated (i.e., marginally gravitationally unstable and internally heated) disk model with surface density Σ ∼ 1720(R/10 au)−1.96 g cm−2 and midplane temperature T
mid ∼ 185(R/10 au)−1.27 K. The observed disk contains an m = 1 spiral substructure; we use our model to predict the spiral’s pitch angle, and the prediction is consistent with the observations. This agreement serves as both a test of our model and strong evidence of the gravitational nature of the spiral. Our model estimates a maximum grain size

a

max

∼
196

(
R

/

10

au
)

−
2.45

μ
m

, which is consistent with grain growth being capped by a fragmentation barrier with a threshold velocity of ∼1 m s−1. We further demonstrate that the observational properties of TMC1A are typical among the observed population of class 0/I disks, which hints that traditional methods of disk data analysis based on Gaussian fitting and the assumption of optically thin dust emission could have systematically underestimated the disk size and mass and overestimated the grain size.
The Journey to a TDWG Mappings Task Group and its Plans for the Future
Authors: Fichtmueller David 
Published: September 2023

Some Biodiversity Information Standards (TDWG) standards have had mappings to other standards for years or even decades. However each standard is using its own approach to documenting those mappings, some are incomplete and often hard to find. There is no TDWG recommended approach for how mappings should be documented, like the Standards Documentation Standard (SDS) does for the standards themselves.
During TDWG 2022 in Sofia, Bulgaria, the topic of mapping between standards was mentioned several times throughout the conference, which led to an impromptu discussion about standards mappings at the Unconference slot on the last conference day. Afterwards a dedicated Slack channel within the TDWG Slack workspace was added to continue the conversation (#mappings-between-standards). During further discussions, both within the Technical Architecture Group (TAG) of TDWG and during separate video conferences on the topic, it was decided to form a dedicated task group under the umbrella of the TAG. This task group is still in the process of formation. The goal of the group is to review the current state of mappings for TDWG standards, align approaches by the different standards to foster interoperability and give recommendations for current and future standards on how to specify mappings. Further work to define the strategy and scope for achieving these goals is needed, particularly to gain community input and acceptance. Consideration has been given to a range of possible types of mappings, which serve the different use cases and expectations for mappings such as machine actionability and improved documentation of the TDWG standards landscape to aid user understanding and implementation. In this talk we will show the work that has already been done, outline our planned steps and invite the community to give input on our process.
Towards the Atlas of Living Flanders, a Challenging Path
Authors: Brosens Dimitri , Migerode Sten , De Wever Aaike 
Published: September 2023

In Belgium, a federal country in the heart of Europe, the competencies for nature conservation and nature policy lie within the regions. The Research Institute for Nature and Forest (INBO) is an independent research institute, funded by the Flemish regional government, which underpins and evaluates biodiversity policy and management by means of applied scientific research, and sharing of data and knowledge.
One of the 12 strategic goals in the 2009-2015 INBO strategic planning was that: 'INBO manages data and makes them accessible. It looks into appropriate data gathering methods and means by which to disseminate data and make them readily available'. Since 2009, the INBO has steadily evolved into a research institute with a strong emphasis on open data and open science. In 2010 INBO became a data publisher for the Global Biodiversity Information Facility (GBIF), adopted an open data and open access policy and is known for being an open science institute in Flanders, Belgium. In 2021, a question arose from the council of ministers on the possibility and availability of a public portal for biodiversity data. The goal of this portal should be to ensure findability, availability, and optimal usability of biodiversity data, initially for policy makers, but also for the wider public. With the Living Atlas project already high on our radar, an analysis project, funded by the Flemish government, started in December 2021. All the entities in the department of 'Environment' contributed to a requirements and feasibility study, a proof of concept (POC) Living Atlas for Flanders was set up and the required budget was calculated.
During the requirements and feasibility study we questioned the agency for nature and forest (ANB), the Flanders Environment Agency (VMM), Flemish land agency (VLM) and the Department of Environment with the help of a professional inquiry agency IPSOS on the possible relevance for policy of a Flemish biodiversity portal, the need of high resolution data (geographical and temporal scale) and the availability of biodiversity data in Flanders, focussed on key species, protected species and other Flemish priority species.
During the technical proof of concept, we tested the Living Atlases (LA) software suite as the most mature candidate for a Flemish Living Atlas. We checked how we could set up a LA installation in our own Amazon Web Services (AWS) environment, evaluated all the used technologies, estimated the maintenance and infrastructure cost, the needed profiles and the number of full-time equivalent personnel we would need to run a performant Atlas of Living Flanders.
The goal of this talk is to inform the audience on the steps we took, the hurdles we encountered and how we are trying to convince our policy makers of the benefits of an Atlas of Living Flanders.
Un couple en exil : Jean-Richard et Marguerite Bloch (avril 1941-janvier 1945)
Authors: Mazuy Rachel 
Published: September 2023

À première vue, le couple militant formé par Jean-Richard et Madeleine Bloch ne semble guère se distinguer d’autres cas convenus : lui est un intellectuel proche, puis adhérent du Parti communiste dans les années 1930 ; elle le suit dans ses engagements, lui offre le support nécessaire et se charge de la vie familiale. La guerre et surtout l’exil en URSS, à partir de 1941, bouleversent cet équilibre en modifiant la répartition des rôles. En suivant les pérégrinations des Bloch, cet article montre ce que l’exil fait au militantisme vécu en couple.
L’agenda social paritaire : un projet de régulation interprofessionnelle autonome
Authors: Freyssinet Jacques 
Published: September 2023

L’accord national interprofessionnel du 14 avril 2022 sur le paritarisme prévoit « la construction d’un agenda économique et social paritaire autonome ». Il s’agit pour les signataires de prendre leurs distances à l’égard d’un agenda social qui leur serait imposé par le gouvernement. Si l’adoption d’un tel agenda ne constitue pas un phénomène nouveau, les expériences antérieures étaient nées de conjonctures spécifiques ; elles étaient prévues pour une durée limitée. Pour la première fois est posé le principe d’un recours permanent à cette procédure. En tirant les enseignements d’expériences discontinues, il est possible de dégager les conditions et les limites d’une capacité de régulation autonome. Elles sont liées au contenu des accords, à la reconnaissance de la légitimité et de la représentativité des signataires et aux rapports de coopération, de concurrence ou de conflit qui s’établissent avec les régulations étatiques.
Zeolite intervention counteracts hepato-nephrotoxicity changes and regenerates insulin release in streptozotocin-induced diabetic rats
Authors: Sultan Hussein A. , Ashry Mahmoud , El-Bitar Alaa M.H. , Moustafa Mohsen A. 
Published: September 2023

Background and objective
Natural products from various sources tend to be potential candidates for drug discovery. Natural and synthetic zeolites are potentially useful biopharmaceuticals and bio-tools due to their unique and outstanding physical and chemical properties; therefore, this study aimed to estimate the hepatorenal preventive and insulin release restoration efficiencies of zeolite (natural and synthetic) in STZ-induced diabetic rats.

Materials and methods
Post inductions of hyperglycemia with a single (ip) dose of STZ (55 mg/kg), the rats were arranged into four groups (8 rats each): (I) normal control group, (II) STZ-diabetic rats, (III) STZ-diabetic rats treated orally with natural zeolite (300 mg/kg/day), and IV) STZ-diabetic rats treated with synthetic zeolite (300 mg/kg/day).

Results and conclusion
After 6 weeks of treatment of diabetic animals, both zeolite types markedly exhibited antidiabetic, anti-inflammatory, hepato-nephroprotective, and antioxidative stress effects that were monitored from the significant reduction in glucose, ALAT, ASAT, urea, creatinine, MDA, and NO values concomitant with a significant rise in insulin, GSH, SOD and CAT values, close to the corresponding values of normal ones. Also, both zeolites succeeded to modulate STZ-induced histological distortion. In conclusion, both zeolites exhibited multi-health benefits with promising potential against STZ-induced diabetes. This effect may be attributed to the antioxidant and free radical scavenging mechanisms of zeolites that were evidenced by hepatorenal protective activities.
Morphological Spectrum of Bone Marrow Aspirates in Infections: A Clinico-Hematological Analysis
Authors: Aggarwal Divya , More Shilpi , Singh Ritika , Sikka Meera , Kotru Mrinalini 
Published: September 2023

Abstract

Context:
Bone marrow examination (BME) is an invaluable tool for cases with pyrexia of unknown origin and pancytopenia. However, it is under-utilized for diagnosing infectious etiology and there is a paucity of literature regarding its role in infective pathology.

Aims:
This study aims to bring to light the role of BME in diagnosing infectious pathology.

Settings and Design:
A retrospective study was carried out on bone marrow aspirates (BMAs) sent to the hematology department over the past 4 years. Clinical details, peripheral smears and BMA were retrieved from the records and analyzed.

Subjects and Methods:
Leishman-stained peripheral smears and BMA were studied along with bone marrow biopsy wherever feasible.

Results:
A total of 52 cases were studied. The most common clinical presentation was fever, clinical finding was splenomegaly and hematological finding was anemia. Based on the morphological findings in combination with clinical history, cases were categorized into–parasitic (26.9%), viral (23.1%), tubercular (11.5%), and nonspecific infections (38.5%). Parasites such as Leishmania donovani, microfilaria, plasmodium falciparum, and vivax were reported in 14/52 (27%) cases. Associated BMA findings were plasmacytosis, eosinophilia, reactive lymphocytosis, or dyserythopoiesis. In 38% (20/52) cases, no specific cause of infection was found in the bone marrow. These patients showed histiocytosis, hemophagocytosis, maturation arrest in myeloid lineage, relative myeloid hyperplasia, dysmyelopoiesis, toxic granulation/vacuolation in myeloid cells, lymphocytosis, increased plasma cells or monocytosis in marrow.

Conclusions:
Increased histiocytes, hemophagocytosis, dysplastic changes, maturation arrest, relative myeloid hyperplasia or reactive plasmacytosis, lymphocytosis, and monocytosis are BMA features which must alert the pathologist towards an infectious disease process, a knowledge of these changes can help extend the scope of BME beyond hemato-lymphoid malignancies.
Survival analysis of temporary anchorage devices: A retrospective analysis in a Nigerian orthodontic patient population
Authors: Umeh Onyinye Dorothy , Offojebe Uzoma Linda , Isiekwe Ikenna Gerald , Utomi Ifeoma , daCosta Oluranti 
Published: September 2023

OBJECTIVES:
Temporary anchorage devices (TADs) are skeletal anchorage devices. They are minimally invasive and placed by the orthodontist to prevent unwanted tooth movement. This study evaluated the survival rate of orthodontic TADs at 6 months. This study also assessed the effect of age, gender, side, site, dental arch of placement, and length of the TADs on its survival rate.

MATERIALS AND METHODS:
Ethical approval was obtained from the Health Research Ethics Committee of the hospital. The study sample comprised orthodontic patients who required the placement of TADs during treatment at a private dental facility in Lagos. Data for the study were obtained from the case files of the study subjects and included the subjects' age, gender, date of placement of the TADs, the site, side and arch of placement, the length of the TADs, and the survival rate of 6 months after placement.

RESULTS:
We reviewed 90 placed TADs and observed a survival rate of 88.9%. Most TAD failures occurred in the first month of placement (p = 001). There was no observable statistically significant effect of all other variables assessed (age, gender, arch, site, side, or implant length) on the survival rate of the TADs.

CONCLUSIONS:
The survival rate of TADs was high. Most TAD failures significantly occurred within one month of placement. There was no significant association between all other clinical variables and orthodontic mini-implant survival.
Les dialectismes dans Balerina, Balerina de Marko Sosič et leur traduction française
Authors: Vaupot Sonia , Mavrič Tessa 
Published: September 2023

Le roman de Marko Sosič, Balerina Balerina, paru en 1997, a remporté plusieurs prix littéraires. Cette œuvre slovène résiste à la traduction du fait de l’écriture personnelle de l’auteur, mais aussi la valeur littéraire du dialecte du Littoral slovène et italien que l’écrivain a mêlé au slovène standard, créant ainsi une prose poétique particulière. Dans cet article, nous évoquerons la difficulté de traduire ou d’adapter ce dialecte en français, puis nous analyserons les choix du traducteur et les procédés adoptés pour résoudre les difficultés posées par la présence d’éléments dialectaux dans le roman.
La configuración personal como tarea ética
Authors: Fernández de Liencres Francisco Javier 
Published: September 2023

Toda moral centrada en el deber sin ninguna integración personal y responsable, puede ser el origen de un sentido de culpabilidad que dificulte cualquier proyecto de corrección. La recuperación de la idea de ética como camino a la realización personal, la consideración de la ética como ''vida buena'' para personas comprometidas con la justicia, nos permitirá entender la ética como una vía para alcanzar el equilibrio de las relaciones personales consigo mismas, otras cosas y las personas.
Sistem Informasi Perusahaan Pada E - Bussines
Authors: Charos Wanda Aprilly , Nasution Muhammad Irwan Padli , Sundari Sri Suci Ayu 
Published: September 2023

This research was written with the aim of knowing how company information systems work in e-business. This research was written using the library research method or library research using several books and journals as the source of this research. Library research is research that does not use research data such as observations and interviews. The data source used is secondary data from journals and books related to the material for writing this paper. The background of this research is how management information systems are used in online businesses. The results of this study can be seen that the information system is a combination of software, hardware, and telecommunication networks to collect useful data, especially within an organization. Few companies today are built entirely on information technology, such as eBay, Amazon, Alibaba and Google. There are 4 types of known information systems namely operations support systems, management information systems, decision support systems andexecutive information systems