bluuebunny/crossref_metadata_2025 huggingface dataset:
Lead species formation on pure hemimorphite surface and its performance for subsequent sulfidization
Authors: Liang Guanyu , Zhang Song , Xian Yongjun , Chen Luzheng
Published: April 2024

Hemimorphite is important-supplementary resource for the commercial zinc production, but it easy loses into tailings due to extreme difficulty for its surface sulfidization. Adding active metal ions after sulfidization have been widely proposed for enhancing hemimorphite floatability, but its desired efficiency in flotation practice has not yet been completely achieved caused by the instability of sulfide layer. Whereas pre-adsorption of active metal ions to modify the hemimorphite surface has strong potential to make up for this shortcoming. Herein, the feasibility and appropriate environment of free Pb2+ for modifying the pure hemimorphite surface was evaluated. Subsequently, the performance of Pb2+ adsorption for enhancing sulfidization stability and floatability of hemimorphite were investigated. The X-ray photoelectron spectroscopy results indicated that the Pb2+ adsorption on hemimorphite surface was achieved through the Pb ions displacement for Zn ions, and it was bond to oxygen-containing groups on hemimorphite surface. Such adsorption was strengthened with the increasing of solution pH, owing to the abundant Pb hydroxyl species precipitated on mineral under alkaline conditions, in term of the results of visual MINTEQ modeling and time-of-flight secondary-ion mass spectrometry. In addition, the X-ray photoelectron spectroscopy results showed dominant Pb hydroxyl species further reacted with sulfur during subsequent sulfidization to generate much more S species than that of without Pb2+ pre-modification. Meanwhile, such sulfide layer composed by Pb2+ on the mineral surface presented much higher stability than Zn-S species, which was verified via adsorption and desorption tests. As a result, the sulfidization and flotation recovery of hemimorphite increased after Pb2+ pre-adsorption.
Morphological, Thermal, Physicomechanical and Optical Properties of Crosslinked Poly (Ester-Urethane-Acrylate): Effect of Added Methyl Methacrylate
Authors: Shyam Dev Maurya  , Sanjay K. Nayak
Published: April 2024

Poly (ester-urethane-acrylate) (PEUA) macromonomer was prepared by reacting two moles of isophorone diisocyanate (IPDI) with one mole of bis (1,4-butanediol ortho-phthalate) (BPE), followed by end-capping with two moles of 2-hydroxyethyl methacrylate (HEMA) in the presence of dibutyltin dilaurate (DBTDL) catalyst. Thereafter, different ratios of methyl-methacrylate (MMA) were added to the PEUA macromonomer to prepare crosslinked PEUA/MMA sheets. Fourier transform infrared spectrometry (FTIR), ultraviolet-visible spectrophotometry (UV-vis) and differential scanning calorimetry (DSC) techniques were employed to investigate the structure, optical transparency and thermal properties of the crosslinked sheets. The effect of MMA on the polymerization shrinkage and abrasive wear properties of PEUA and their copolymers were also studied. The polymerization shrinkage study showed that PEUA copolymer containing 40 wt% MMA had a more rigid microstructure with improved volume shrinkage and abrasive wear properties as compared with the other compositions of PEUA copolymers with MMA loadings of 80, 60 and 20%. The improvement was attributed to the better miscibility and compatibility of 40 wt% MMA with the PEUA as revealed by DSC, heat deflection temperature (HDT) and scanning electron microscope (SEM) studies.
,,Jüngling, aus dir hätte viel werden können.“ Künstlerfiguren und Kunsttheorie in E.T.A. Hoffmanns Werk
Authors: Quintes Christian
Published: April 2024

Abstract E.T.A. Hoffmann entwirft, so meine zentrale These, eine dreistufige Theorie der Produktion von Kunst, welche erstmals im Ritter Gluck erläutert und in der Jesuiterkirche in G. erneut herangezogen sowie in anderen Werken Hoffmanns nutzbar gemacht
wird, um zu verdeutlichen, wie wahrhafte Kunst entsteht. Die drei Stufen der Theorie, erstens Erwerb grundlegender künstlerischer Fähigkeiten, zweitens träumerischer Spannungszustand (in Anlehnung an das Traumverständnis der romantischen Anthropologie) und drittens künstlerische
Erhebung, nehmen dabei indirekt Bezug auf Schellings Ästhetiktheorie, die er im System des transzendentalen Idealismus formulierte. Ich verdeutliche, quasi im Sinne eines wissenspoetischen Ansatzes, wie das frühromantische Wissen über Ästhetik sich bei Hoffmann literarisch
niederschlägt und gehe abschließend darauf ein, wie dieser sich innerhalb der romantischen Genie-Debatte positioniert.
Dominant Tourism Educational and Research Reasoning: A Critique to Portugal’s Case
Authors: Pereiro Xerardo , Bernardo Edgar
Published: April 2024

In this article, we present a reflexive criticism of the Portuguese university-level tourism education by analyzing CAEs’ evaluations (External Evaluation Commissions) that the A3ES (https://www.a3es.pt/) has been doing at bachelor’s, master’s, and Ph.D. degree level
in Tourism courses. In our analysis, we underline the role of interdisciplinary and multidisciplinary in curriculums and CAEs’ subjective appraisals that reduce tourism to a technical, managerial, mercantile, and neoliberal research exercise, following academic capitalist principles.
The proposed multidisciplinary of two CAE reports stand as examples of a discourse that camouflages a practice of exclusion, blocking a truly multidisciplinary and cross-disciplinary approach, and the opportunity to consider the potential of partnership between tourism studies research reasoning
and other related disciplines and approaches. This has reduced tourism training and education to a homogeneous, monodisciplinary, reductionism, endogamic, quantitative, and positivist practice, recognizing only hyperspecialized educational models and tourism curriculums as valid. CAEs’
abusive promotion of a technical and managerial specialization of tourism professionals dismisses those that establish interdisciplinary partnerships between tourism and other fields of knowledge which favor a complex humanistic training.
School-Parent Engagement on Stimulation Activities in Pre-Primary Schools in Kira Municipality in Wakiso District, Uganda
Authors: Mutumba Safina , Busingye Evangelista , Maani John Samson
Published: April 2024

Stimulation activities are events that parents and other caregivers give to the children to support their cognitive, emotional, and physical needs right from birth onwards. For instance, playing and talking with them (even before children can respond verbally), and exposing them to words, numbers, and simple concepts while engaging in daily routines. Whereas School-parent engagement is where schools tend to create partnerships between themselves and the parents so that they are able to work together, most especially pertaining to their children’s education and holistic development. Schools can work with parents in making decisions, setting goals and attaining academic outcomes. This contributes to the enhancement of children’s holistic growth and development. This research study, therefore, aimed at examining school-parent engagement in Pre-primary schools in Kira Municipality, Wakiso District, Uganda which has remained a gap for long. The study used a descriptive cross-sectional survey design. Data was collected using both quantitative and qualitative instruments. These included; Focus group discussion guides, document analysis guide, observation checklist, and questionnaires. The respondents included; headteachers, Centre Management Committee (CMC) chairpersons, parents, and teachers. The findings of this study show that parents were not closely working with the school to stimulate children’s learning. Schools reported significantly lower levels of parents came in to check on their children’s books or to submit homework, or drop and pick a child from school. Parents were majorly coming in for meetings and any event that had been organised by the school or to pay fees dues. Three major recommendations regarding parent engagement in stimulation activities were given. These included; ensuring that parents understand what stimulation activities mean, the materials to use and their role in supporting their children’s learning. Then, it also suggested the best approach to ensure that stimulation activities are provided to the children both at Pre-primary school and at home for continuity of learning. The paper concludes by suggesting recommendations on the need for school-parent engagement to ensure that effective stimulation activities are provided at the Pre-primary schools. Thus, enabling children to receive integrated stimulation opportunities that are contextualised
General Integral Transform Performance for Space-Time Fractional Telegraph Equations
Authors: Tuan Nguyen Minh , Koonprasert Sanoe , Meesad Phayung
Published: April 2024

The development of technology has supported effective tools in industrial machines and set up the remarkable phase that serves well-being such as kinetic energy, kinetic movement, and nuclear energy. Applied mathematics has also contributed valuable procedures in various fields of these sciences, especially the creation of transformation. With practical relevance, a new general integral (NGI) transform has also shown a crucial role in the same pragmatic methods. In this paper, the NGI transform using the combination of Padé approximation including continued fraction expansions (CFE) has been used to attain approximate solutions of space-time fractional telegraph equations by directly getting the inverse transform.
Influence of dowel group configuration on the stability of reinforced slopes
Authors: Kharichkin A. I. , Chernyatin D. V. , Galimov I. M. , Babich D. D.
Published: April 2024

Introduction. Slope reinforcement with dowels is the most economical and environmentally friendly method of their stabilization. However, the lack of theoretically substantiated schemes for optimal placement of dowels in groups, confirmed by tests in various conditions, leads to inefficient, often excessive use of the material in the arrangement of engineering protection.

Aim. To determine the most effective arrangement of dowels in groups with regard to the overall stability of the reinformed soil mass. To assess quantitatively the stability depending on the spacing and shape of dowels in the group.

Materials and methods. A review of international and Russian literature on the problem of assessing the influence of geometric parameters of dowel and anchor groups was carried out. According to the results of the review, primary calculations with the use of numerical simulation in the PLAXIS 3D software package was carried out.

Results. The available publications mainly analyze configurations of screw anchor groups, paying insufficient attention the use of dowels of cylindrical cross-section. This fact substantiates further research in this field. The conducted numerical simulation allowed the slope stability provided by five dowel group configurations to be compared. The calculation results show that the slope stability depends on the configuration and the number of dowels in the group. The difference between the stability factors for the polygonal and triangular three-row configuration was 0.072 %, with the polygonal configuration requiring three dowels less. Selection of optimal dowel placement contributes to increased landslide control efficiency and reduced costs.

Conclusions. The relevance and importance of studying the effect of dowel group configuration on slope stability, emphasizing the need for more in-depth and comprehensive research in this area.
METAPHORICAL THINKING IN POETRY
Authors:   Basic doctoral student of the Institute of Uzbek Language, Literature and Folklore of the Uzbekistan Academy of Sciences, Uzbekistan, Muhammadiev Dadakhan
Published: April 2024

This article talks about the influence of the period on literature, literary changes in the process of this influence, news. The concept of metaphorical thinking has been studied separately from the concept of metaphor. The role and essence of metaphoricalthinking is revealed in poetry.
GREEK MYTHOLOGY IN THE PERCY JACKSON SERIES BY RICK RIORDAN
Authors:   Doctoral Student of Bukhara State University, English teacher of Bukhara State Medical University, Uzbekistan, Shavkatovna Mirzayeva Aziza
Published: April 2024

This article examines the depiction of characters in the Percy Jackson series by Rick Riordan, with a focus on both gender and Greek mythology. The analyses aim to find out how Riordan portrays his characters regarding gender stereotypes, and how he has adapted Greek mythological figures to fit into a narrative in the 21st century. It has been identified how The Percy Jackson books take place in a world where Greek mythology is real. By using gender theory and discussing women’s role in Ancient Greek society, the analyses and discussion can provide a broader view of the representation shown in Riordan’s books.
GENEOLOGICAL BASES OF HOUSEHOLD VOCABULARY IN THE WORKS OF ALISHER NAVOIY
Authors:   Associate Professor at (PhD) Jizzakh State Pedagogical University, Uzbekistan, Xurshid Maxammadiyev
Published: April 2024

This article provides an understanding of household lexemes used in the works of Alisher Navoi. Information is given on which language the household lexemes used in Alisher Navoi's works are taken from, whether they are native or borrowed. Examples are given of whether the used household lexemes are used or not used in the current Uzbek literary language. The language from which household lexemes were acquired is shown in percentages.
INTERNATIONAL LEGAL REGULATION OF SUSTAINABLE USE OF BIOLOGICAL DIVERSITY
Authors:   Master's student of Tashkent State University of Law,Uzbekistan, Umirbek Ismoilov
Published: April 2024

The sustainable use of biological diversity is essential for maintaining the health of ecosystems and supporting human well-being. International legal frameworks play a crucial role in guiding and regulating activities related to biodiversity conservation and sustainable use. This article explores the key legal instruments and principles that govern the sustainable use of biological diversity, with a focus on the Convention on Biological Diversity (CBD) and its associated protocols. It also highlights practical examples of how these frameworks are implemented at national and regional levels, including initiatives in Central Asian countries. The challenges and futuredirections in the international legal regulation of biodiversity are discussed, emphasizing the need for enhanced implementation, cooperation, and adaptation to emerging environmental issues. The article aims to provide a comprehensive overview of the legal and practical aspects of sustainable use of biological diversity, contributing to a better understanding of its importance in global environmental governance.
STUDYING THE STRUCTURE OF CESAREAN SECTION IN SAMARKAND
Authors:   Department Of Obstetrics And Gynecology No. 1, Uzbekistan, Mukhsinovna Homidova Shakhlo , Rukhshona Khakimova ,   Student Of The Pediatric Faculty Of Group No. 328 Samarkand State Medical University, Samarkand, Uzbekistan
Published: April 2024

Cesarean section surgery is included in moderate to severe caesarean section surgery. According to various sources, complications after surgery rangefrom 7-19.5%. These complications are explained by obstetric and extragenital pathology. The first stage lasts on average 2-7 days from the moment of injury, its duration depends on the size and type of injury. Developing changes in microcirculation depend on changes in vascular tone, impaired permeability of vascular walls, and the nature of the biosynthesis of biologically active substances.
FORMATION OF ECOLOGICAL COMPETENCE IN STUDENTS BASED ON NATIONAL-SPIRITUAL QUALITIES
Authors:   Jizzakh State Pedagogical University,Uzbekistan, Visola Turakulova
Published: April 2024

In today's world, the importance of ecological competence among students is paramount. As global environmental challenges continue to escalate, there is a pressing need to cultivate a generation of environmentally conscious individuals. This article explores the role of national-spiritual qualities in shaping ecological competenceamong students. Drawing upon interdisciplinary research in ecology, psychology, and education, we investigate the symbiotic relationship between cultural values, spirituality, and environmental stewardship. By integrating these elements into educational practices, we propose effective strategies for nurturing ecological awareness and responsibility in students.
VOCABULARY NEEDS IN PRIMARY GRADE MOTHER TONGUE CLASSES
Authors:   NDPI assistant teacher,Uzbekistan, Azatovna Kojalepesova Periyzat
Published: April 2024

Since the emergence of educational lexicography, lexicographers have been interested in its distinguishing feature as a separate lexicographic genre, its classification features. This question was first addressed by S.G. Barkhudarov and L.A. Novikov in 1971, "What should be the educational vocabulary?".
DEVELOPING ORAL AND WRITTEN SPEECH OF PRIMARY SCHOOL STUDENTS THROUGH INDEPENDENT READING OF EXAMPLES OF WORLD LITERATURE
Authors:   Teacher at the department ", Zaripova M.B. ,   Distance education in pre-school and primary courses",   of the External Department at JSPU named after A. Qadiri,Uzbekistan
Published: April 2024

This article talks about the development of oral and written speech of primary school students through independent reading of samples of world literature.
INTERACTIONAL JUSTICE AND THE PSYCHOLOGICAL WELL-BEING OF THE TEACHERS OF THE ARCHDIOCESE OF BAMENDA, NOTH WEST REGION OF CAMEROON
Authors:   (Ph.D) Faculty of Education, University of Bamenda, Cameroon, Yuyun Nsairun Leonard
Published: April 2024

The purpose of this study was to investigate the effect of interactional justice on the psychological well-being of teachers in the Archdiocese of Bamenda North West Region of Cameroon. The study employed a sequential explanatory research design. The sample for the study comprised 270 teachers working in Catholic nursery, primary and secondary schools within the Mankon, Bayelle and Bambui Deaneries of the Archdiocese of Bamenda. Data were collected with the help of a questionnaire and focus Group Discussions. Data were analyzed using both inferential and descriptive statistics. Findings revealed that interactional justice had no significant effect on the psychological well-being of teachers of the Archdiocese of Bamenda. Based on the findings, it was recommended that private sector education employers should uphold honesty, accountability and transparency in the management of subventions and payment of salaries to teachers and that they allow private sector education teachers to exercise their right to form trade union to defend their labour interests.
A PNDR e seu momento atual : agendas estratégicas, planos regionais de desenvolvimento e rotas de integração nacional
Authors: Alves Adriana Melo , Coêlho Vitarque Lucas Paes
Published: April 2024

Este capítulo avalia a Política Nacional de Desenvolvimento Regional (PNDR) desde sua primeira versão, lançada em 2007 pelo Ministério da Integração Nacional (MI), e seu processo de revisão, por meio do Decreto nº 9.810/2019 (Brasil, 2019a). Neste segundo momento, a política regional teve sua responsabilidade atribuída ao Ministério do Desenvolvimento Regional (MDR), órgão criado em 2019 a partir da fusão entre o MI e o Ministério das Cidades (MCID).
O Crédito de descarbonização (CBIO) e sua relação com o mercado de carbono
Authors: Bento José Alex do Nascimento , Vieira Filho José Eustáquio Ribeiro
Published: April 2024

O objetivo deste capítulo é examinar se a implementação do ativo ambiental (CBIOs) constitui um mercado voluntário de carbono. Em detalhe, serão discutidos o desenvolvimento do mercado dos ativos ambientais CBIOs, as origens dos mercados de carbono e uma comparação das políticas de regulação carbono consideradas.
Towards Saving Strategies Leading to Financial Stability for Bank Clients A Case of CBZ and Steward Bank
Authors: Modeson Maburutse , Last Matsiwira , Obert Sifile
Published: April 2024

The study analyzed the saving strategies that lead to financial stability in the banking sector of Zimbabwe, focusing on Steward Bank and CBZ Bank. The research used the mixed methods approach. Data from the 236 respondents that were analyzed in the study obtained the following findings: the need to review banking policy reforms to enable banks to offer better rates to savers, account-operating costs are too high; customers needed protection guarantees for their deposits. Furthermore, it was noted that financial literacy was high amongst bank customers and there was lack of trust in the financial institutions by the customers. The study recommended that the US Dollar should be formalized as the only Zimbabwe currency until the economy stabilized, reduction of account operating charges and an increase in awareness of the Deposit Protection Corporation to improve customers’ confidence levels with financial institutions will improve savings in the financial sector.
Kähler-Yang-Mills Equations and Vortices
Authors:   Instituto de Ciencias Matem&, García-Prada Oscar ,   #225,   ticas, Spain
Published: April 2024

The Kähler-Yang-Mills equations are coupled equations for a Kähler metric on a compact complex manifold and a connection on a complex vector bundle over it. After briefly reviewing the main aspects of the geometry of the Kähler-Yang-Mills equations, we consider dimensional reductions of the equations related to vortices — solutions to certain Yang-Mills-Higgs equations.
Evolved Massive Stars at Low Metallicity. VII. The Lower Mass Limit of the Red Supergiant Population in the Large Magellanic Cloud
Authors: Yang 杨 Ming 明 , Zhang 章 Bo 博 , Jiang 姜 Biwei 碧沩 , Gao 高 Jian 健 , Ren 任 Yi 逸 , Wang 王 Shu 舒 , Lam 林 Man I 敏仪 , Tian 田 Hao 浩 , Luo 罗 Changqing 常青 , Chen 陈 Bingqiu 丙秋 , Wen 文 Jing 静
Published: April 2024

The precise definition of the lower mass limit of red supergiant stars (RSGs) is an open question in astrophysics and does not attract much attention. Here, we assemble a spectroscopic evolved cool star sample with 6602 targets, including RSGs, asymptotic giant branch stars, and red giant branch stars, in the Large Magellanic Cloud based on Gaia DR3 and Sloan Digital Sky Survey IV/APOGEE-2. The reference spectrum of each stellar population is built according to the quantile range of relative intensity (1% ∼ 99%). Five different methods, e.g., χ
2, cosine similarity, machine learning (ML), equivalent width, and line ratio, are used in order to separate different stellar populations. ML and χ
2 provide the best and relatively consistent prediction of a certain population. The derived lower limit of the RSG population is able to reach the K

s
-band tip of the red giant branch (K

s
≈12.0 mag), indicating a luminosity as low as about 103.5
L
⊙, which corresponds to a stellar radius of only about 100 R
⊙. Given the mass–luminosity relation of

L

/

L

⊙

=
f

(
M

/

M

⊙

)

3

with f ≈ 15.5 ± 3 and taking into account the mass loss of faint RSGs up to now, the minimal initial mass of the RSG population would be about 6.1 ± 0.4 M
⊙, which is much lower than the traditional threshold of 8 M
⊙ for the massive stars. This is the first spectroscopic evidence, indicating that the lower mass limit of the RSG population is around 6 M
⊙. However, the destinies of such faint RSGs are still elusive and may have a large impact on stellar evolutionary and supernova models.
The XMM-Newton Line Emission Analysis Program (X-LEAP). II. The Multiscale Temperature Structures in the Milky Way Hot Gas
Authors: Qu Zhijie , Pan Zeyang , Bregman Joel N. , Liu Jifeng
Published: April 2024

This paper presents the multiscale temperature structures in the Milky Way (MW) hot gas, as part of the XMM-Newton Line Emission Analysis Program, surveying the O vii, O viii, and Fe-L band emission features in the XMM-Newton archive. In particular, we define two temperature tracers, I
OVIII/I
OVII (O87) and I
FeL/(I
OVII + I
OVIII) (FeO). These two ratios cannot be explained simultaneously using single-temperature collisional ionization models, which indicates the need for multitemperature structures in hot gas. In addition, we show three large-scale features in the hot gas: the eROSITA bubbles around the Galactic center (GC), the disk, and the halo. In the eROSITA bubbles, the observed line ratios can be explained by a log-normal temperature distribution with a median of

log
T

/

K
≈
6.4

and a scatter of σ

T
≈ 0.2 dex. Beyond the bubbles, the line ratio dependence on the Galactic latitude suggests higher temperatures around the midplane of the MW disk. The scale height of the temperature variation is estimated to be ≈2 kpc assuming an average distance of 5 kpc for the hot gas. The halo component is characterized by the dependence on the distance to the GC, showing a temperature decline from

log

T

/

K

≈
6.3

to 5.8. Furthermore, we extract the autocorrelation and cross-correlation functions to investigate the small-scale structures. O87 and FeO ratios show a consistent autocorrelation scale of ≈5° (i.e., ≈400 pc at 5 kpc), which is consistent with the expected physical sizes of X-ray bubbles associated with star-forming regions or supernova remnants. Finally, we examine the cross-correlation between the hot and UV-detected warm gas and show an intriguing anticorrelation.
An Algorithm for the Determination of Coronal Mass Ejection Kinematic Parameters Based on Machine Learning
Authors: Lin 林 Rongpei 荣沛 , Yang 杨 Yi 易 , Shen 沈 Fang 芳 , Pi Gilbert , Li 李 Yucong 雨淙
Published: April 2024

Coronal mass ejections (CMEs) constitute the major source of severe space weather events, with the potential to cause enormous damage to humans and spacecraft in space. It is becoming increasingly important to detect and track CMEs, since there are more and more space activities and facilities. We have developed a new algorithm to automatically derive a CME’s kinematic parameters based on machine learning. Our method consists of three steps: recognition, tracking, and the determination of parameters. First, we train a convolutional neural network to classify images from Solar and Heliospheric Observatory Large Angle Spectrometric Coronagraph observations into two categories, containing CME(s) or not. Next, we apply the principal component analysis algorithm and Otsu’s method to acquire binary-labeled CME regions. Then, we employ the track-match algorithm to track a CME’s motion in time-series images and finally determine the CME’s kinematic parameters, e.g., velocity, angular width, and central position angle. The results of four typical CME events with different morphological characteristics are presented and compared with a manual CME catalog and several automatic CME catalogs. Our algorithm shows some advantages in the recognition of CME structure and the accuracy of the kinematic parameters. This algorithm can be helpful for real-time CME warnings and predictions. In the future, this algorithm is capable of being applied to CME initialization in magnetohydrodynamic simulations to study the propagation characteristics of real CME events and to provide more efficient predictions of CMEs’ geoeffectiveness.
Comprehensive Analysis of a Filament-embedding Solar Active Region at Different Stages of Evolution
Authors: Zhao Jie , Yu Fu , Gibson Sarah E. , Fan Yuhong , Su Yang , Li Ying , Dai Jun , Li Hui , Li Chuan , Chen Pengfei , Ding Ming-De , Fang Cheng
Published: April 2024

Active regions are the brightest structures seen in the solar corona, so their physical properties hold important clues to the physical mechanisms underlying coronal heating. In this work, we present a comprehensive study for a filament-embedding active region as determined from observations from multiple facilities including the Chinese Hα Solar Explorer. We find three types of dynamic features that correspond to different thermal and magnetic properties, i.e., the overlying loops—1 MK cool loops, the moss region—2–3 MK hot loops’ footprints, and the sigmoidal filament. The overlying cool loops, which have a potential field, always show Doppler blueshifts at the east footprint and Doppler redshifts at the west, indicating a pattern of “siphon flow.” The moss-brightening regions, which sustain the hot loops that have a moderate sheared field, always show downward Doppler redshifts at the chromosphere, which could be a signature of plasma condensing into the inner region adjacent to the filament. The sigmoidal filament, which has strongly sheared field lines along the polarity inversion line, however, shows a different Doppler velocity pattern in its middle part, i.e., an upward Doppler blueshift at the double-J-shaped stage indicating tether-cutting reconnection during the filament channel formation and then a downward redshift showing the plasma condensation for the sigmoidal filament formation. The present work shows overall properties of the filament-embedding active region, constraining the heating mechanisms of different parts of the active region and providing hints regarding the mass loading of the embedded filament.
NICER, NuSTAR, and Insight-HXMT Views to Black Hole X-Ray Binary SLX 1746–331
Authors: Peng Jing-Qiang , Zhang Shu , Shui Qing-Cang , Zhang Shuang-Nan , Chen Yu-Peng , Kong Ling-Da , Yu Zhuo-Li , Ji Long , Wang Peng-Ju , Ge Ming-Yu , Qu Jin-Lu , Tao Lian , Chang Zhi , Li Jian , Li Zhao-sheng , Yan Zhe
Published: April 2024

We study the spectral and temporal properties of the black hole (BH) X-ray transient binary SLX 1746–331 during the 2023 outburst with NICER, NuSTAR, and Insight-HXMT observations. Through the joint fitting of the spectra from NICER, NuSTAR, and Insight-HXMT, the spin and inclination angles are measured for the first time as 0.85 ± 0.03 and 53° ± 0.°5, respectively. Accordingly, the mass of the compact star is updated from the previous lower limit of 3.3 ± 2.1M
⊙ to 5.5 ± 3.6M
⊙, which is consistent with 5.2 ± 4.5M
⊙ measured with an empirical mass–luminosity correlation of BH samples. With more NICER observations covering the later decay of the outburst, we confirm that the entire outburst was dominated by the disk emissions, and the thermal spectrum follows

F
∝

T

in

3.974
±
0.003

, until a luminosity of over 2 magnitudes lower than the maximum of the outburst.
Ultradeep Cover: An Exotic and Jetted Tidal Disruption Event Candidate Disguised as a Gamma-Ray Burst
Authors: Eyles-Ferris R. A. J. , Nixon C. J. , Coughlin E. R. , O’Brien P. T.
Published: April 2024

Gamma-ray bursts (GRBs) are traditionally classified as either short GRBs with durations ≲2 s that are powered by compact object mergers or long GRBs with durations ≳2 s that are powered by the deaths of massive stars. Recent results, however, have challenged this dichotomy and suggest that there exists a population of merger-driven long bursts. One such example, GRB 191019A, has a t
90 ≈ 64 s, but many of its other properties—including its host galaxy, afterglow luminosity and lack of associated supernova—are more consistent with a short GRB. Here we propose an alternative interpretation: that GRB 191019A (which is located in the nucleus of its host) is an atypical jetted tidal disruption event (TDE). In particular, we suggest the short timescale and rapid decline, not expected for standard TDEs, are the result of an “ultradeep” encounter, in which the star came well within the tidal radius of the black hole and promptly self-intersected, circularized, accreted, and launched a relativistic outflow. This model reproduces the timescale and luminosity through a prompt super-Eddington accretion phase and accounts for the lack of late optical emission. This would make GRB 191019A only the fifth jetted TDE and the first discovered ultradeep TDE. The ultradeep TDE model can be distinguished from merger-driven long GRBs via the soft X-ray flash that results from prompt self-intersection of the debris stream; the detection of this flash will be possible with wide-field and soft-X-ray satellites such as Einstein Probe or SVOM.
Axial Flux Evolution of Small-scale Magnetic Flux Ropes from 0.06 to 10 au
Authors: Farooki Hameedullah , Lee Jeongwoo , Pecora Francesco , Wang Haimin , Kim Hyomin
Published: April 2024

Small-scale magnetic flux ropes (SMFRs) fill much of the solar wind, but their origin and evolution are debated. We apply our recently developed, improved Grad–Shafranov algorithm for the detection and reconstruction of SMFRs to data from Parker Solar Probe, Solar Orbiter, Wind, and Voyager 1 and 2 to detect events from 0.06 to 10 au. We observe that the axial flux density is the same for SMFRs of all sizes at a fixed heliocentric distance but decreases with distance owing to solar wind expansion. Additionally, using the difference in speed between SMFRs, we find that the vast majority of SMFRs will make contact with others at least once during the 100 hr transit to 1 au. Such contact would allow SMFRs to undergo magnetic reconnection, allowing for processes such as merging via the coalescence instability. Furthermore, we observe that the number of SMFRs with higher axial flux increases significantly with distance from the Sun. Axial flux is conserved under solar wind expansion, but the observation can be explained by a model in which SMFRs undergo turbulent evolution by stochastically merging to produce larger SMFRs. This is supported by the observed log-normal axial flux distribution. Lastly, we derive the global number of SMFRs above 1015 Mx near the Sun to investigate whether SMFRs begin their journey as small-scale solar ejections or are continuously generated within the outer corona and solar wind.
Responsabilité des intermédiaires d’assurance : coup d’œil sur une jurisprudence volatile
Authors: Vermeiren Julien
Published: April 2024

Surfant entre obligations de résultat et de moyen, l’intermédiaire d’assurance est un acteur économique fondamental dans le monde de l’assurance. Au point de devenir une cible privilégiée si l’assureur déclinait sa couverture . Nous nous sommes intéressés à quelques décisions récentes qui pourraient remettre en cause le quotidien de ces acteurs du marché de l’assurance . La présente contribution n’a cependant pas la prétention de se vouloir exhaustive . L’auteur se contentera humblement de commenter quelques décisions récentes et notables en ce qu’elles font preuve d’une appréciation tantôt sévère, tantôt magnanime, des missions de l’intermédiaire d’assurance .
La pandémie de COVID-19 et le secteur des assurances : premières réflexions
Authors: Verdure Christophe
Published: April 2024

Les répercussions juridiques exactes de la pandémie de COVID-19 sont encore difficilement identifiables à ce jour, tant les questions qu’elle suscite sont nombreuses. Le droit des assurances est, à l’instar d’autres corpus de règles, concerné. La présente contribution vise à en dresser un premier état des lieux.
Note d’observations. La rémunération de base à prendre en compte pour la réparation d’un accident du travail subi par un travailleur occupé dans le cadre de plusieurs contrats chez différents employeurs
Authors: Gilson Steve , Trusgnach Zoé
Published: April 2024

Dans l’arrêt commenté du 24 octobre 2019, la Cour constitutionnelle a considéré que dans l’interprétation suivant laquelle l’indemnité d’incapacité temporaire de travail qui est due à un travailleur qui est victime d’un accident du travail au cours de l’exécution de son contrat de travail à temps partiel et qui est en outre engagé dans les liens d’un autre contrat de travail à temps plein est, conformément à l’article 37 bis , § 1 er , de la loi du 10 avril 1971, fixée exclusivement en fonction du salaire qui lui est dû aux termes de son contrat de travail à temps partiel, il y a violation des articles 10 et 11 de la Constitution. A contrario, si cette disposition est interprétée comme s’appliquant uniquement lorsque le travailleur concerné est occupé exclusivement à temps partiel, que ce soit en vertu d’un ou de plusieurs contrats de travail à temps partiel, il n’y a pas de violation des articles 10 et 11 de la Constitution dès lors qu’il y a lieu, dans ce cas, d’appliquer le régime général de l’article 34 de la loi, lu ou non en combinaison avec l’article 36 de la même loi si la période de référence est incomplète.
L’article 38, § 6, de la loi du 16 mars 1968 relative à la police de la circulation routière : Suite et fin ?
Authors: Lambotte Patrick
Published: April 2024

La présente contribution se focalise sur les derniers rebondissements liés à la question de la récidive spéciale de l’article 38, § 6, de la loi relative à la police de la circulation routière du 16 mars 1968. Elle aborde les soucis engendrés par les modifications successives de cet article, présente une analyse de la jurisprudence récente et les conditions d’application actuelles de l’article 38, § 6.
Le préjudice esthétique, un déficit fonctionnel méconnu
Authors: Fagnart Jean-Luc
Published: April 2024

Le préjudice esthétique est considéré aujourd’hui comme un petit préjudice « annexe », peu digne d’intérêt. L’article ci-dessous démontre que l’apparence de l’individu joue un rôle majeur dans ses relations avec les autres. Elle est un instrument de la fonction relationnelle du corps, relation méconnue par les barèmes d’invalidité. Une lésion de l’apparence entraine une dégradation de cette fonction. Ce déficit fonctionnel doit être traité comme tous les autres, car il peut être la source d’une incapacité personnelle, professionnelle et même, dans une certaine mesure, ménagère.
Assurance incendie : quels recours subrogatoires pour l’assureur incendie ?
Authors: Charlier Aline
Published: April 2024

Un immeuble est donné en location. À la suite d’une défaillance électrique, un électricien est mandaté par le propriétaire pour effectuer les réparations utiles. Une nouvelle défaillance se produit, après réparations, et cause un incendie qui détruit tout l’immeuble. L’assureur incendie du propriétaire doit-il intervenir et, le cas échéant, quels sont ses recours subrogatoires éventuels ?
Contrat d’assurance : des conditions particulières non signées sont-elles opposables au preneur d’assurance ?
Authors: Charlier Aline , Janssen Céline
Published: April 2024

Une personne est victime d’un vol chez elle. Elle est preneuse d’assurance et assurée dans le cadre d’une « police globale habitation » depuis un peu plus de deux ans, et sollicite l’application, en sa faveur, de la garantie d’assurance vol. Cependant, elle n’a pas respecté une mesure de prévention qui lui était imposée dans les conditions particulières du contrat. L’assureur refuse de prendre le sinistre en charge. L’assurée soutient que les conditions particulières, qui déterminent la mesure de prévention, ne lui seraient pas opposables car elles ne sont pas signées de sa part. Elle veut donc être indemnisée et refuse l’application de la clause contenant la mesure de prévention (non respectée). Ce raisonnement tient-il la route ?
Le travailleur aidant proche… enfin aidé ?
Authors: Charlier Aline , Lentz Jeanne
Published: April 2024

En Belgique, près d’une personne sur dix peut être considérée comme aidant proche d’une personne en état de besoin. Le législateur a reconnu l’aidant proche, puis lui a octroyé des droits sociaux. Force est néanmoins de constater que cela n’est pas suffisant. La présente contribution a pour objet de faire le point sur le statut et les droits des aidants proches, avant, maintenant et… après ?
Usufruit et assurance du « bien » : Portée de l’article 3.151 du code civil
Authors: Verdure Christophe
Published: April 2024

La réforme de l’usufruit, à l’occasion du nouveau droit des biens, a emporté dans son sillage une nouvelle obligation d’assurance pour tout « bien » dont la propriété est démembrée, et ce à charge de l’usufruitier. La présente contribution vise à examiner les contours de cette nouvelle obligation.
Le régime de l’assurance des dommages causés par des catastrophes naturelles à l’épreuve d’un événement majeur
Authors: Paris Catherine
Published: April 2024

Les inondations exceptionnelles de l’été 2021 ont mis plus que jamais en évidence l’intérêt du régime de l’assurance des dommages causés par les catastrophes naturelles et en ont pareillement révélé les limites. L’étude examine quelques questions qui se sont posées avec une acuité particulière après cet événement d’une ampleur sans précédent. Elle revient sur la notion de risques simples et sur le contenu de la garantie légale, avant d’évoquer quelques pistes qui pourraient être explorées afin de mettre en place un nouveau mécanisme de financement pérenne et solidaire des aléas climatiques.
La responsabilité de l’avocat en temps de Covid-19 envisagée sous l’angle de la procédure judiciaire dans le procès civil
Authors: Bourlet Guillaume
Published: April 2024

L’avocat est susceptible d’engager sa responsabilité dès lors qu’il commet une faute, la plus légère soit-elle. Durant la période du confinement imposé pour lutter contre l’épidémie de Covid-19, une série de mesures ont été prises à l’emporte-pièce sur le plan de la procédure judiciaire dans le but déclaré d’éviter d’aggraver l’arriéré judiciaire déjà très préoccupant. Après avoir examiné quelques particularités de la responsabilité professionnelle de l’avocat, le régime de la procédure écrite, classique et durant le confinement, ainsi que celui de l’allongement des délais seront disséqués afin d’envisager les hypothèses dans lesquelles l’avocat a pu engager sa responsabilité en faisant face à ces modifications temporaires mais marquantes de la procédure judiciaire.
Le stationnement à Bruxelles : regard critique sur une législation contestée et contestable
Authors: Szulanski Sabine
Published: April 2024

Le stationnement constitue un usage normal de la voirie. Celui-ci est déjà rétribué par la taxe de circulation sur laquelle les communes perçoivent des décimes additionnels de telle sorte que toute autre rétribution, quelle qu’en soit la forme, ne devrait être que très exceptionnelle et très modérée .
Quelques rappels sur l’évènement soudain en matière d’accident du travail
Authors: Gilson Steve
Published: April 2024

Au travers de l’examen de quelques décisions récentes rendues en matière d’accident du travail, nous allons revenir sur la notion d’évènement soudain qui continue à générer d’intenses discussions nonobstant la position actuelle de la Cour de cassation .
Permanence et reprise des actes écrits qui ont dénoncé par la voie judiciaire les atrocités de la dictature chilienne
Authors: Accatino Daniela , Bernasconi Oriana , Collins Cath
Published: April 2024

Face à l'oralité et à la théâtralité des procès, le rôle de l'écriture dans le traitement judiciaire des atrocités massives n'a reçu que peu d'attention dans la littérature sur la justice transitionnelle, ou a été relégué à celui de source d'information. Le présent article souligne le rôle de l'écriture juridique dans la quête de justice dans des affaires de crimes contre l'humanité au fil du temps. En examinant la performativité des écrits juridiques, cet article reconstitue les chaînes d'écriture juridique relatives aux actions en justice engagées dans un cas de disparition forcée pendant et après le régime dictatorial qui l’a perpétrée. Il montre que l’écriture juridique assure une pérennité et anticipe l'action judiciaire, en la préparant aux futures citations et reprises, en articulant le passé, le présent et l'avenir et en constituant un réseau d'archives juridiques qui prennent place dans l'exercice de la justice.
Dénonciation et actes d’écriture dans les rapports de droits humains pendant la dictature civile-militaire au Chili
Authors: Zúñiga Marcela Ruiz , Agüero Antonia Torres
Published: April 2024

Les rapports sur les droits humains articulent et transfèrent des énoncés de victimes, de témoins et d'organisations dans des contextes de controverses sociopolitiques. En soulignant la condition médiatrice et scripturale de ces rapports, nous caractérisons le mode d'incorporation, les finalités et les valorisations attribuées aux actes d'écriture transférés du « Comité de Cooperación para la Paz en Chile » et de « Vicaría de la Solidaridad », organisations de défense des droits humains, vers quatre rapports des Nations Unies entre 1975-1979. L'analyse de 82 séquences discursives indique que les actes d'écriture associés à ces organisations locales sont reconnus et autorisés par les Nations Unies comme des sources légitimes d'information sur la répression, de même que la possession d’artefacts d’écriture (Bulletin informatif Solidarité ) fait l'objet de persécutions. Les déclarations transférées mettent en question la véracité de la version officielle de la dictature et révèlent la transformation des usages des chaînes d'écriture associées à la dénonce des violations des droits humains sous le régime autoritaire.
Pour un changement de paradigme des représentations sur les anglicismes
Authors: Julia Léopold
Published: April 2024

Les  haters d’hier sont-ils les  haters d’aujourd’hui ? Depuis le pamphlet d’Étiemble paru en 1964, les puristes n’ont jamais manqué de nous alerter contre les prétendus dangers du « franglais », qui semble pourtant avoir essaimé jusqu’au plus haut sommet de notre  startup nation puisque l’Académie française elle-même rendait en 2020 son « Rapport de la commission d’étude sur la communication institutionnelle en langue française », y déplorant l’usage outrancier des anglicismes. De façon ambiguë, si les discours normativo-prescriptifs sur la langue ont souvent émané, récemment, d’un conservatisme plutôt de droite, c’est aujourd’hui le néolibéralisme issu du même côté de l’échiquier politique qui emprunte excessivement à l’anglais. Témoins de ce « en même temps » politico-linguistique, certaines représentations sur les anglicismes révèlent finalement, plus qu’une dissonance cognitive, un rappel de la dichotomie saussurienne entre langue et parole et, in fine, un potentiel changement de paradigme.
Existence and asymptotic behavior for ground state sign-changing solutions of fractional Schrödinger-Poisson system with steep potential well
Authors: Huang Xiao Qing , Liao Jia Feng
Published: April 2024

In this paper, we investigate the existence of ground state sign-changing solutions for the following fractional Schrödinger-Poisson system

   \begin{document}$ \begin{equation} \begin{cases} (-\Delta)^s u+V_{\lambda} (x)u+\mu\phi u = f(u), & \; \mathrm{in}\; \; \mathbb{R}^3, \\ (-\Delta)^t \phi = u^2, & \; \mathrm{in}\; \; \mathbb{R}^3, \end{cases} \nonumber \end{equation} $\end{document}

where $ \mu > 0, s\in(\frac{3}{4}, 1), t\in(0, 1) $ and $ V_{\lambda}(x) $ = $ \lambda V(x)+1 $ with $ \lambda > 0 $. Under suitable conditions on $ f $ and $ V $, by using the constraint variational method and quantitative deformation lemma, if $ \lambda > 0 $ is large enough, we prove that the above problem has one least energy sign-changing solution. Moreover, for any $ \mu > 0 $, the least energy of the sign-changing solution is strictly more than twice of the energy of the ground state solution. In addition, we discuss the asymptotic behavior of ground state sign-changing solutions as $ \lambda\rightarrow \infty $ and $ \mu\rightarrow0 $.