bluuebunny/crossref_metadata_2025_split huggingface dataset:
Interstellar Extinction, Polarization, and Grain Alignment in the Sh 2-185 (IC 59 and IC 63) Region
Authors: Soam Archana , Andersson B-G , Straižys V. , Caputo Miranda , Kazlauskas A. , Boyle R. P. , Janusz R. , Zdanavičius J. , Acosta-Pulido J. A. 
Published: February 2021

Abstract
Optical and infrared continuum polarization from the interstellar medium is driven by radiative processes aligning the grains with the magnetic field. While a quantitative, predictive theory of radiative alignment torques (RATs) exists and has been extensively tested, several parameters of the theory remain to be fully constrained. In a recent paper, Medan & Andersson showed that the polarization efficiency (and therefore grain alignment efficiency) at different locations in the wall of the Local Bubble (LB) could be modeled as proportional to the integrated light intensity from the surrounding stars and OB associations. Here we probe that relationship at high radiation field intensities by studying the extinction and polarization in the two reflection nebulae IC 59 and IC 63 in the Sh 2-185 H ii region, illuminated by the B0 IV star γ Cassiopeia. We combine archival visual polarimetry with new seven-band photometry in the Vilnius system, to derive the polarization efficiency from the material. We find that the same linear relationship seen in the LB wall also applies to the Sh 2-185 region, strengthening the conclusion from the earlier study.
X-Ray Spectroscopy of the Highly Magnetized Pulsar PSR J1846-0258, Its Wind Nebula, and Hosting Supernova Remnant Kes 75
Authors: Gotthelf E. V. , Safi-Harb S. , Straal S. M. , Gelfand J. D. 
Published: February 2021

Abstract
We present broadband X-ray spectroscopy of the energetic components that make up the supernova remnant (SNR) Kesteven 75 using concurrent 2017 August 17–20 XMM-Newton and NuSTAR observations, during which the pulsar PSR J1846−0258 is found to be in the quiescent state. The young remnant hosts a bright pulsar wind nebula powered by the highly energetic (

erg s−1) isolated, rotation-powered pulsar, with a spin-down age of only

. Its inferred magnetic field (B

s
= 4.9 × 1013 G) is the largest known for these objects, and is likely responsible for intervals of flare and burst activity, suggesting a transition between/to a magnetar state. The pulsed emission from PSR J1846−0258 is well-characterized in the 2–50 keV range by a power-law model with photon index ΓPSR = 1.24 ± 0.09 and a 2–10 keV unabsorbed flux of (2.3 ± 0.4) × 10−12 erg s−1 cm−2. We find no evidence for an additional non-thermal component above 10 keV in the current state, as would be typical for a magnetar. Compared to the Chandra pulsar spectrum, the intrinsic pulsed fraction is 71 ± 16% in 2–10 keV band. A power-law spectrum for the pulsar wind nebulae (PWN) yields ΓPWN = 2.03 ± 0.02 in the 1–55 keV band, with no evidence of curvature in this range, and a 2–10 keV unabsorbed flux (2.13 ± 0.02) × 10−11 erg s−1 cm−2. The NuSTAR data reveal evidence for a hard X-ray component dominating the SNR spectrum above 10 keV that we attribute to a dust-scattered PWN component. We model the dynamical and radiative evolution of the Kes 75 system to estimate the birth properties of the neutron star, the energetics of its progenitor, and properties of the PWN. This suggests that the progenitor of Kes 75 was originally in a binary system which transferred most of its mass to a companion before exploding.
Magnetic Reconnection between Loops Accelerated By a Nearby Filament Eruption
Authors: Li Leping , Peter Hardi , Chitta Lakshmi Pradeep , Song Hongqiang , Ji Kaifan , Xiang YongYuan 
Published: February 2021

Abstract
Magnetic reconnection modulated by nonlocal disturbances in the solar atmosphere has been investigated theoretically, but rarely observed. In this study, employing Hα and extreme ultraviolet (EUV) images and line-of-sight magnetograms, we report the acceleration of reconnection by an adjacent filament eruption. In Hα images, four groups of chromospheric fibrils are observed to form a saddle-like structure. Among them, two groups of fibrils converge and reconnect. Two newly reconnected fibrils then form and retract away from the reconnection region. In EUV images, similar structures and evolution of coronal loops are identified. The current sheet forms repeatedly at the interface of reconnecting loops, with a width and length of 1–2 and 5.3–7.2 Mm and a reconnection rate of 0.18–0.3. It appears in the EUV low-temperature channels, with an average differential emission measure (DEM) weighed temperature and EM of 2 MK and 2.5 × 1027 cm−5. Plasmoids appear in the current sheet and propagate along it, and then further along the reconnection loops. The filament, located to the southeast of the reconnection region, erupts and pushes away the loops covering the reconnection region. Thereafter, the current sheet has a width and length of 2 and 3.5 Mm and a reconnection rate of 0.57. It becomes much brighter and appears in the EUV high-temperature channels, with an average DEM-weighed temperature and EM of 5.5 MK and 1.7 × 1028 cm−5. In the current sheet, more hotter plasmoids form. More thermal and kinetic energy is hence converted. These results suggest that the reconnection is significantly accelerated by the propagating disturbance caused by the nearby filament eruption.
Predictions of Astrometric Jitter for Sun-like Stars. I. The Model and Its Application to the Sun as Seen from the Ecliptic
Authors: Shapiro Alexander I. , Solanki Sami K. , Krivova Natalie A. 
Published: February 2021

Abstract
The advent of Gaia, capable of measuring stellar wobbles caused by orbiting planets, raised interest in the astrometric detection of exoplanets. Another source of such wobbles (often also called jitter) is stellar magnetic activity. A quantitative assessment of the stellar astrometric jitter is important for a more reliable astrometric detection and characterization of exoplanets. We calculate the displacement of the solar photocenter due to the magnetic activity for an almost 16 yr period (1999 February 2–2014 August 1). We also investigate how the displacement depends on the spectral passband chosen for observations, including the wavelength range to be covered by the upcoming Small-JASMINE mission of JAXA. This is done by extending the SATIRE-S model for solar irradiance variability to calculating the displacement of the solar photocenter caused by the magnetic features on the surface of the Sun. We found that the peak-to-peak amplitude of the solar photocenter displacement would reach 0.5 μas if the Sun were located 10 pc away from the observer and observed in the Gaia G filter. This is by far too small to be detected by the Gaia mission. However, the Sun is a relatively inactive star so one can expect significantly larger signals for younger, and, consequently, more active stars. The model developed in this study can be combined with the simulations of emergence and surface transport of magnetic flux which have recently become available to model the astrometric jitter over the broad range of magnetic activities.
A Census of Blue Stragglers in Gaia DR2 Open Clusters as a Test of Population Synthesis and Mass Transfer Physics
Authors: Leiner Emily M. , Geller Aaron 
Published: February 2021

Abstract
We use photometry and proper motions from Gaia DR2 to determine the blue straggler star (BSS) populations of 16 old (1–10 Gyr), nearby (d < 3500 pc) open clusters. We find that the fractional number of BSS compared to red giant branch stars increases with age, starting near zero at 1 Gyr and flattening to ∼0.35 by 4 Gyr. Fitting stellar evolutionary tracks to these BSSs, we find that their mass distribution peaks at a few tenths of a solar mass above the main-sequence turnoff. BSSs more than 0.5 M
⊙ above the turnoff make up only ∼25% of the sample, and BSSs more than 1.0 M
⊙ above the turnoff are rare. We compare this to Compact Object Synthesis and Monte Carlo Investigation Code population synthesis models of BSSs formed via mass transfer. We find that standard population synthesis assumptions dramatically under-produce the number of BSS in old open clusters. We also find that these models overproduce high-mass BSSs relative to lower-mass BSSs. The expected number of BSSs formed through dynamics do not fully account for this discrepancy. We conclude that in order to explain the observed BSS populations from Roche lobe overflow, mass transfer from giant donors must be more stable than assumed in canonical mass-transfer prescriptions, and including nonconservative mass transfer is important in producing realistic BSS masses. Even with these modifications, it is difficult to achieve the large number of BSSs observed in the oldest open clusters. We discuss some additional physics that may explain the large number of observed blue stragglers among old stellar populations.
The First 3D Coronal Loop Model Heated by MHD Waves against Radiative Losses
Authors: Shi Mijie , Van Doorsselaere Tom , Guo Mingzhe , Karampelas Konstantinos , Li Bo , Antolin Patrick 
Published: February 2021

Abstract
In the quest to solve the long-standing coronal heating problem, it was suggested half a century ago that coronal loops could be heated by waves. Despite the accumulating observational evidence of the possible importance of coronal waves, still no 3D MHD simulations exist that show significant heating by MHD waves. Here we report on the first 3D coronal loop model that heats the plasma against radiative cooling. The coronal loop is driven at the footpoint by transverse oscillations, and subsequently the induced Kelvin–Helmholtz instability deforms the loop cross section and generates small-scale structures. Wave energy is transferred to smaller scales where it is dissipated, overcoming the internal energy losses by radiation. These results open up a new avenue to address the coronal heating problem.
Standing on Apollo’s Shoulders: A Microseismometer for the Moon
Authors: Nunn Ceri , Pike William T. , Standley Ian M. , Calcutt Simon B. , Kedar Sharon , Panning Mark P. 
Published: February 2021

Abstract
Seismometers deployed on the Moon by the Apollo astronauts from 1969 to 1972 detected moonquakes and impacts, and added to our understanding of the lunar interior. Several lunar missions are currently being planned, including the Commercial Lunar Payload Services (CLPS), the Lunar Geophysical Network, and the astronaut program Artemis. We propose a microseismometer for the Moon: the Silicon Seismic Package (SSP). The SSP’s sensors are etched in silicon, and are predicted to have a noise floor below

2
×

10

−
10

(
m

s

−
2

)

/

Hz

between 0.3 and 3 Hz (similar to the Apollo instruments between 0.3 and 0.5 Hz, and better than Apollo above 0.5 Hz). The SSP will measure horizontal and vertical motion with the three sensors in a triaxial configuration. The instrument is robust to high shock and vibration and has an operational range from −80°C to +60°C, allowing deployment under harsh conditions. The first-generation version of this sensor, the SEIS-SP, was deployed on Mars in 2018 as part of the InSight mission’s seismic package. We will reconfigure the seismometer for the lower gravity of the Moon. We estimate that a single SSP instrument operating for one year would detect around 74 events above a signal-to-noise ratio of 2.5, as well as an additional 500+ above the noise floor. A mission lasting from lunar dawn until dusk, carried on a CLPS lander, could test the instrument in situ, and provide invaluable information for an extensive future network.
Trouver ou retrouver belle allure sur le chemin qui est le sien
Authors: Hesbeen Walter 
Published: February 2021

Guérir d’un cancer – ou d’une maladie chronique –, retrouver la santé comme horizon, n’est pas chose aisée. À partir de ce constat, l’auteur souligne l’intérêt de la « réhabilitation oncologique » qu’il définit comme une médecine du devenir de la personne . Son projet : aider un sujet à trouver ou retrouver belle allure sur le chemin de vie qui est le sien, avec ses limitations, ses difficultés, ses espoirs. Cette préoccupation soignante est aussi un souci éthique et un appel à la créativité et à la générosité des soignants.
Revivre et ne plus être patient
Authors: Schwering Karl-Leo 
Published: February 2021

À la notion de guérison est préférée celle d’un revivre , qui équivaut à quitter le statut de patient. Pour sortir du cancer, une « subversion libidinale du corps médicalisé » est nécessaire, qui s’oppose à une « inversion hypocondriaque ». L’avènement chez le malade d’une différenciation des affects, au plus près du corps, en est aussi la condition. Enfin, une « subversion nominale » lui permet de quitter le socle de la médecine scientifique contemporaine pour prendre soin de lui-même, et vivre autrement.
ETAT DES LIEUX ET IMPACTS SOCIO-ENVIRONNEMENTAUX DE LA GESTION DES DECHETS HOSPITALIERSSOLIDES DANS LA VILLE DE YAOUNDE, CAPITALE DU CAMEROUN
Authors: Denis Djiyo , Clautaire Mwebi , Laurent Manga , Nicolas Teougam , Abdelmalek Harrag , Dongmo Agokeng , Mélanie Gisele 
Published: February 2021

This paper presents an overview on biomedical wastes(BWs) management in the capital city of Cameroon andrelated socio-environmental impacts. Four elementsconstitute major axes in this study: (i) the general viewof BWs management in five health centers (HCs) inYaoundé city, (ii) the among of BWs produced in eachHC, (iii) the management method used in various HCsand (iv) resulted social and environmental impacts.Field observations and data analysis collected from themedical staff and users have shown that BWs producedin those HCs of our choice regroup household waste(76.79 %), pathological waste (12.43 %), prickly andcutting waste (9.58 %), anatomical waste (0.60 %) andspecial waste (0.30 %). The management system ofthese wastes still in his embryonic state due to lack ofreal waste management plan, lack of information andtraining of medical staff, lack of qualified staff in wastemanagement and also lack of financial issues. Asconsequences, one attends poor BWs management ateach step of waste management, with consequence theexposure of the populations to numerous possibleillnesses. The environmental pollution is also sensitivebecause of BWs deposit on soil, their transportation bywater streaming and also of poisonous gas dismissal inair during their decomposition.
Cet article présente l’état des lieux de la gestion desdéchets hospitaliers (DHs) solides dans la capitale duCameroun ainsi qu’une appréciation des impacts socioenvironnementauxassociés. Les travaux se sontdéroulés suivant 4 axes majeurs : (i) aperçu global de lagestion des DHs solides dans cinq formations sanitaires(FOSAs) de la ville de Yaoundé, (ii) quantité de DHssolides produite dans chaque FOSA, (iii) mode degestion employé dans les différentes FOSAs et (iv)impacts sociaux et environnementaux correspondants.L’observation de terrain et le dépouillement desdonnées de l’enquête menée auprès du personnelmédical et des usagers ont montré que l’ensemble desDHs solides produits dans les FOSAs sélectionnéesregroupe les déchets ménagers (76,79%),pathologiques (12,43%), piquants et tranchants(9,58%), anatomiques (0,60%) et spéciaux (0,30%). Lesystème de gestion de ces déchets est encore à l’étatembryonnaire du fait de l’absence d’un véritable plande gestion des déchets, du manque d’information et deformation du personnel médical, du manque depersonnels qualifiés en gestion des déchets mais aussidu manque de moyens financiers. En conséquence, onassiste à une mauvaise gestion des DHs solides, àchaque étape du processus de gestion des déchets,entrainant l’exposition des populations à de nombreuximpacts sanitaires possibles. La pollution del’environnement est également sensible du fait dudépôt des DHs sur le sol, leur transport par les eaux deruissellement, mais aussi des émanations gazeusesrésultant de leur décomposition.
CAPTURING OF UNEVEN DEFORMATIONS OF LIGHTENED 3D PRINTED PARTS
Authors: Klejch Filip , Schmidová Eva , Vágner Jakub , Zetková Ivana 
Published: February 2021

This paper deals with the problematics of tensile testing of maraging steel lightweight cylindrical samples with internal structures, intended for automotive application. The samples were made with DMLS technology and tensile tested under the static strain rate of 0.002 s-1. During the loading, uneven deformations and multiple necking occurred on the samples. The mentioned effect significantly affects the state of stress and deformation at the final fracture zone, as well as the total deformation into the fracture, which means that it actually distorts the standard tensile test record. Therefore, a methodology for capturing the deformation response using the ARAMIS optical system was proposed. The methodology is presented and verified by a set of experiments for BCC internal structure.
Logos Dalam Injil Yohanes: Allah Atau Hakikat Adikodrati Yang Lebih Rendah Dari Allah
Authors: Kaseke Fanny Y. M 
Published: February 2021

Perdebatan tentang siapakah atau apakah yang dimaksud logos oleh Yohanes dalam Injilnya terus terjadi di antara para theolog. Beberapa theolog menyamakan sang logos dengan Allah, sementara sebagian lainnya keberatan dengan penyamaan itu. Pada masa kini, keberatan yang paling jelas datang dari kelompok yang mengusung ajaran pluralisme. Implikasi dari penyamaan sang logos dengan Allah dalam Injil Yohanes adalah memperkuat premis sebagian theolog bahwa ajaran Allah Tritunggal benar adanya dan bahwa sang logos adalah salah satu dari tiga “pribadi” Allah tritunggal, yakni pribadi kedua (Kristus Yesus). Tulisan ini memaparkan tentang kajian sang logos dalam Injil Yohanes yang dikemukakan oleh tokoh pluralisme, kemudian analisa tentang hal itu dalam bingkai worldview theologia Injili.
The debate over who or what logos meant by John in his gospel continued to occur among theologians. Some theologians equate the logos with God, while others object to the equation. At present, the most obvious objection comes from groups that carry the teachings of pluralism. The implication of equating the logos with God in the Gospel of John is to strengthen the premise of some theologians that the teaching of the Triune God is true and that the logos is one of the three "persons" of the triune God, the second person (Christ Jesus). This paper describes the study of the logos in the Gospel of John put forward by pluralism figures, then analyzes it in terms of the worldview of Evangelical theology.
Hidup Oleh Roh Meurut Roma 8
Authors: Siagian Rustam 
Published: February 2021

Setiap orang percaya terpanggil untuk menjadi saksi Kristus dalam dunia ini. Dalam mengemban tugas itu orang percaya menghadapi situasi-situasi yang tidak mudah, ada tantangan dari dalam diri dan dari luar dirinya. Karena itu Tuhan telah memperlengkapi orang percaya dengan kuasa rohani. Tetapi orang percaya sering lupa pada kuasa rohani itu yang menyebabkan kesaksian orang percaya menjadi tidak efektif. Firman Tuhan dari Roma 8 menolong orang percaya agar hidupnya menjadi kesaksian yang efektif. Karena itu dalam tulisan ini akan diuraikan eksegese Roma 8.

Every believer is called to be a witness of Christ in this world. In carrying out that task the believer faces difficult situations, there are challenges from within and from outside himself. Therefore God has equipped believers with spiritual power. But believers often forget that spiritual power which causes the believer's testimony to be ineffective. God's Word from Romans 8 helps believers to make their lives an effective witness. Therefore in this paper the exegesis of Romans 8 will be described.
Ekspository Preaching: Jawaban Terhadap Kebutuhan Sistem Berkhotbah Masa Kini
Authors: Tembay Aris Elisa 
Published: February 2021

Dalam ilmu Homeletika, dikenal ada tiga jenis khotbah; yakni khotbah Topikal, Tekstual, dan Ekspositori. Dibandingkan dengan dua jenis khotbah yang lain, ekspositori memiliki ciri-ciri dan kelebihan tersendiri, oleh karena pengkhotbah sangat terikat dengan teks yang dikhotbahkan dan teks tersebut harus merupakan teks yang lengkap seperti satu perikop. Sesuai dengan namanya “Ekspositori” adalah memberitakan atau mengekspos kebenaran Firman Allah dalam satu rangkaian yang terdiri dari tema, pokok-pokok besar dan kecil yang kesemuannya bersumber dari teks. Sehingga menolong pengkhotbah untuk jauh dari penafsiran alegoris, karena seluruh khotbah terdiri dari suatu penjelasan terperinci tentang satu bagian tertentu dari Alkitab dan nats Alkitab itu terjalin dalam seluruh uraian. Khotbah ekspositori menolong jemaat atau pendengar untuk mudah mengerti maksud dan tujuan Firman Tuhan, karena yang diberitakan bukan ide pengkhotbah tetapi murni penguraian dari teks yang dibacakan. Di samping itu sistematika ekspositori yang menguraikan pokok-pokok besar dan kecil bersumber dari tema yang berasal dari teks, memudahkan pendengar untuk mengerti bahkan mengingat Firman Tuhan yang diberitakan. Oleh sebab itu khotbah ekspositori adalah jawaban bagi tantangan pemberitaan Firman Tuhan masa kini.

In Homiletics, there are three types of preaching known; namely Topical, Textual, and Expository sermons. Compared with the other two types of preaching, the expository has its own characteristics and advantages, because the preacher is very bound to the text being preached and the text must be a complete text like a passage. In accordance with its name "Expository" is to preach or expose the truth of God's Word in a series consisting of themes, big and small points whose findings are sourced from the text. So it helps the preacher to be far from allegorical interpretation, because the entire sermon consists of a detailed explanation of one particular part of the Bible and the scriptures are intertwined in the entire description. Expository preaching helps the congregation or listener to easily understand the purpose and purpose of God's Word, because what is preached is not the preacher's idea but purely a decomposition of the text read. In addition, expository systematics that outlines the major and minor points of origin comes from themes originating from the text, making it easy for listeners to understand and even remember the Word of God preached. Therefore expository preaching is the answer to the challenges of preaching God's Word today.