bluuebunny/crossref_metadata_2025_split huggingface dataset:
The frequency of the main factors of cardiovascular risk and the presence of comorbidity in patients with chronic ischemic disease is the heart of the elderly and senile age
Authors: Zharinova V. Yu. , Voynarovskaya G. P. , Shapovalenko I. S. 
Published: December 2021

The purpose of the work is to study the frequency of the main factors of cardiovascular risk (CWR) and the presence of comorbidity in patients with coronary heart disease (CHD) in elderly and senile age.
Materials and methods. A retrospective assessment of the case histories of 454 patients with coronary artery disease who underwent inpatient treatment at the cardiology department of the State Institution «Dmitry F. Chebotarev Institute of Gerontology of the National Academy of Medical Sciences of Ukraine» for the period from 1997-2017. All the examined patients were hospitalized for the first time and later were observed with the main diagnosis of IHD: stable angina of I–IV FC. The diagnosis of the underlying disease was established on the basis of general clinical examinations and special instrumental and laboratory methods in accordance with current recommendations for the diagnosis of coronary artery disease at the stage of examination of patients. Monitoring patients lasted from 5–20 years. Cardiovascular death was taken as the end point.
Results. According to the data obtained in the elderly, the most common cardiovascular risk factors (CVR) are: arterial hypertension (AH), hypercholesterolemia (HChol), obesity, and diabetes mellitus (DM) are largely associated with the possibility of drug correction. In 70.2 % of IHD patients over 60 years old, a simultaneous combination of three or more CVR factors was detected.
Conclusions. 1. The most common cardiovascular risk factors in IHD patients over 60 years old were hypertension (66.9 %), HChol (60.7 %), Obesity (23.9 %), and diabetes (14.3 %) are largely associated with the possibility of medical correction. 2. In the elderly, there is comparable data with the control group for the prevalence of the main factors of CVR. In older patients, the prevalence of smoking, obesity, and dyslipidemia was significantly lower than in the comparison groups. 3. In 70.2 % of IHD patients over 60 years old, a simultaneous combination of three or more RFs was revealed, which indicates the need for an active integrated approach to their correction at a younger age
Minimal Data Fidelity for Stellar Feature and Companion Detection
Authors: Agarwal Sahil , Wettlaufer J. S. 
Published: December 2021

Abstract
Technological advances in instrumentation have led to an exponential increase in exoplanet detection and scrutiny of stellar features such as spots and faculae. While the spots and faculae enable us to understand the stellar dynamics, exoplanets provide us with a glimpse into stellar evolution. While the ubiquity of noise (e.g., telluric, instrumental, or photonic) is unavoidable, combining this with increased spectrographic resolution compounds technological challenges. To account for these noise sources and resolution issues, we use a temporal multifractal framework to study data from the Spot Oscillation And Planet 2.0 tool, which simulates a stellar spectrum in the presence of a spot, a facula or a planet. Given these controlled simulations, we vary the resolution as well as the signal-to-noise ratio (S/N) to obtain a lower limit on the resolution and S/N required to robustly detect features. We show that a spot and a facula with a 1% coverage of the stellar disk can be robustly detected for a S/N (per pixel) of 35 and 60, respectively, for any spectral resolution above 20,000, while a planet with a radial velocity of 10 m s−1 can be detected for a S/N (per pixel) of 600. Rather than viewing noise as an impediment, our approach uses noise as a source of information.
The Phantom Dark Matter Halos of the Local Volume in the Context of Modified Newtonian Dynamics
Authors: Oria P.-A. , Famaey B. , Thomas G. F. , Ibata R. , Freundlich J. , Posti L. , Korsaga M. , Monari G. , Müller O. , Libeskind N. I. , Pawlowski M. S. 
Published: December 2021

Abstract
We explore the predictions of Milgromian gravity (MOND) in the local universe by considering the distribution of the “phantom” dark matter (PDM) that would source the MOND gravitational field in Newtonian gravity, allowing an easy comparison with the dark matter framework. For this, we specifically deal with the quasi-linear version of MOND (QUMOND). We compute the “stellar-to-(phantom)halo mass relation” (SHMR), a monotonically increasing power law resembling the SHMR observationally deduced from spiral galaxy rotation curves in the Newtonian context. We show that the gas-to-(phantom)halo mass relation is flat. We generate a map of the Local Volume in QUMOND, highlighting the important influence of distant galaxy clusters, in particular Virgo. This allows us to explore the scatter of the SHMR and the average density of PDM around galaxies in the Local Volume, ΩPDM ≈ 0.1, below the average cold dark matter density in a ΛCDM universe. We provide a model of the Milky Way in its external field in the MOND context, which we compare to an observational estimate of the escape velocity curve. Finally, we highlight the peculiar features related to the external field effect in the form of negative PDM density zones in the outskirts of each galaxy, and test a new analytic formula for computing galaxy rotation curves in the presence of an external field in QUMOND. While we show that the negative PDM density zones would be difficult to detect dynamically, we quantify the weak-lensing signal they could produce for lenses at z ∼ 0.3.
Effects of the Nuclear Equation of State on Type I X-Ray Bursts: Interpretation of the X-Ray Bursts from GS 1826–24
Authors: Dohi 土 A. 肥明 , Nishimura 西村 N. 信哉 , Hashimoto 橋本 M. 正章 , Matsuo 松尾 Y. 康秀 , Noda 野田 T. 常雄 , Nagataki 長瀧 S. 重博 
Published: December 2021

Abstract
Type I X-ray bursts are thermonuclear explosions on the neutron star (NS) surface caused by mass accretion from a companion star. Observations of X-ray bursts provide valuable information on X-ray binary systems, e.g., binary parameters, the chemical composition of accreted matter, and the nuclear equation of state (EOS). There have been several theoretical studies to constrain the physics of X-ray bursters. However, they have mainly focused on the burning layers above the solid crust of the NS, which brings up issues of the treatment of NS gravitational and internal energy. In this study, focusing on the microphysics inside NSs, we calculate a series of X-ray bursts using a general-relativistic stellar-evolution code with several NS EOSs. We compare the X-ray-burst models with the burst parameters of a clocked burster associated with GS 1826–24. We find a monotonic correlation between the NS radius and the light-curve profile. A larger radius shows a higher recurrence time and a large peak luminosity. In contrast, the dependence of light curves on the NS mass becomes more complicated, where neutrino cooling suppresses the efficiency of nuclear ignition. We also constrain the EOS and mass of GS 1826–24, i.e., stiffer EOSs, corresponding to larger NS radii, are not preferred due to a too-high peak luminosity. The EOS and the cooling and heating of NSs are important to discuss the theoretical and observational properties of X-ray bursts.
On the Dynamics of Overshooting Convection in Spherical Shells: Effect of Density Stratification and Rotation
Authors: Korre Lydia , Featherstone Nicholas A. 
Published: December 2021

Abstract
Overshooting of turbulent motions from convective regions into adjacent stably stratified zones plays a significant role in stellar interior dynamics, as this process may lead to mixing of chemical species and contribute to the transport of angular momentum and magnetic fields. We present a series of fully nonlinear, three-dimensional (3D) anelastic simulations of overshooting convection in a spherical shell that are focused on the dependence of the overshooting dynamics on the density stratification and the rotation, both key ingredients in stars that however have not been studied systematically together via global simulations. We demonstrate that the overshoot lengthscale is not simply a monotonic function of the density stratification in the convective region, but instead it depends on the ratio of the density stratifications in the two zones. Additionally, we find that the overshoot lengthscale decreases with decreasing Rossby number Ro and scales as Ro0.23 while it also depends on latitude with higher Rossby cases leading to a weaker latitudinal variation. We examine the mean flows arising due to rotation and find that they extend beyond the base of the convection zone into the stable region. Our findings may provide a better understanding of the dynamical interaction between stellar convective and radiative regions, and motivate future studies particularly related to the solar tachocline and the implications of its overlapping with the overshoot region.
VLT/MUSE and ATCA Observations of the Host Galaxy of the Short GRB 080905A at z = 0.122
Authors: Nicuesa Guelbenzu A. M. , Klose S. , Schady P. , Belczynski K. , Hartmann D. H. , Hunt L. K. , Michałowski M. J. 
Published: December 2021

Abstract
Short-GRB progenitors could come in various flavors, depending on the nature of the merging compact stellar objects (including a stellar-mass black hole or not) or depending on their ages (millions or billions of years). At a redshift of z = 0.122, the nearly face-on spiral host of the short GRB 080905A is one of the closest short-GRB host galaxies identified so far. This made it a preferred target to explore spatially resolved star formation and to investigate the afterglow position in the context of its star formation structures. We used VLT/MUSE integral-field unit observations, supplemented by ATCA 5.5/9.0 GHz radio-continuum measurements and publicly available HST data, to study the star formation activity in the GRB 080905A host galaxy. The MUSE observations reveal that the entire host is characterized by strong line emission. Using the Hα line flux, we measure for the entire galaxy an SFR of about 1.6 M
⊙ yr−1, consistent with its non-detection by ATCA. Several individual star-forming regions are scattered across the host. The most luminous region has a Hα luminosity that is nearly four times as high as the luminosity of the Tarantula nebula in the Large Magellanic Cloud. Even though star-forming activity can be traced as close to about 3 kpc (in projection) distance to the GRB explosion site, stellar population synthesis calculations show that none of the Hα-bright star-forming regions is a likely birthplace of the short-GRB progenitor.
A Catalog of 323 Cataclysmic Variables from LAMOST DR6
Authors: Sun Yongkang , Cheng Zhenghao , Ye Shuo , Ding Ruobin , Peng Yijiang , Zhang Jiawen , Huo Zhenyan , Cui Wenyuan , Wang Xiaofeng , Shi Jianrong , Lin Jie , Wu Chengyuan , Li Linlin , Feng Shuai , Yu Yang , Ma Xiaoran , Li Xin , Liu Cheng , Zhang Ziping , Shao Zhenzhen 
Published: December 2021

Abstract
In this work, we present a catalog of cataclysmic variables (CVs) identified from the sixth data release (DR6) of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST). To single out the CV spectra, we introduce a novel machine-learning algorithm called UMAP to screen out a total of 169,509 Hα emission spectra, and obtain a classification accuracy of the algorithm of over 99.6% from the cross-validation set. We then apply the template-matching program PyHammer v2.0 to the LAMOST spectra to obtain the optimal spectral type with metallicity, which help us identify the chromospherically active stars and potential binary stars from the 169,509 spectra. After visually inspecting all of the spectra, we identify 323 CV candidates from the LAMOST database, among them 52 objects are new. We further classify the new CV candidates in subtypes based on their spectral features, including five DN subtypes during outbursts, five NL subtypes, and four magnetic CVs (three AM Her type and one IP type). We also find two CVs that have been previously identified by photometry and confirm their previous classification with the LAMOST spectra.
Supernova Host Galaxy Association and Photometric Classification of over 10,000 Light Curves from the Zwicky Transient Facility
Authors: Garretson Braden , Milisavljevic Dan , Reynolds Jack , Weil Kathryn E. , Subrayan Bhagya , Banovetz John , Lee Rachel 
Published: December 2021

Abstract
Here we present a catalog of 12,993 photometrically-classified supernova-like light curves from the Zwicky Transient Facility, along with candidate host galaxy associations. By training a random forest classifier on spectroscopically classified supernovae from the Bright Transient Survey, we achieve an accuracy of 80% across four supernova classes resulting in a final data set of 8208 Type Ia, 2080 Type II, 1985 Type Ib/c, and 720 SLSN. Our work represents a pathfinder effort to supply massive data sets of supernova light curves with value-added information that can be used to enable population-scale modeling of explosion parameters and investigate host galaxy environments.
Lifting of Tribocharged Grains by Martian Winds
Authors: Kruss Maximilian , Salzmann Tim , Parteli Eric , Jungmann Felix , Teiser Jens , Schönau Laurent , Wurm Gerhard 
Published: December 2021

Abstract
It is a long-standing open question whether electrification of wind-blown sand due to tribocharging—the generation of electric charges on the surface of sand grains by particle–particle collisions—could affect rates of sand transport occurrence on Mars substantially. While previous wind tunnel experiments and numerical simulations addressed how particle trajectories may be affected by external electric fields, the effect of sand electrification remains uncertain. Here we show, by means of wind tunnel simulations under air pressure of 20 mbar, that the presence of electric charges on the particle surface can reduce the minimal threshold wind shear velocity for the initiation of sand transport, u
*ft, significantly. In our experiments, we considered different samples, a model system of glass beads as well as a Martian soil analog, and different scenarios of triboelectrification. Furthermore, we present a model to explain the values of u
*ft obtained in the wind tunnel that is based on inhomogeneously distributed surface charges. Our results imply that particle transport that subsides, once the wind shear velocity has fallen below the threshold for sustained transport, can more easily be restarted on Mars than previously thought.
Self-perceived knowledge level of epidemic management in medical residents prior to the start of the COVID-19 pandemic in Mexico
Authors: Reyna-Figueroa Jesus , Arvizu-Chavez Ivan , Luna-Rivera Eva Maria , Gonzalez-Olivo Veronica , Contreras-Ochoa Carla , Amador-Rodriguez Eric Alfonso , Arce-Salinas Cesar Alejandro 
Published: December 2021

Introduction: COVID-19 was declared a pandemic in March 2020, requiring a comprehensive response from all healthcare systems, including Mexico’s. As medical residents’ training did not involve epidemic response, we decided to evaluate their level of training on this subject, specifically self-perceived knowledge level and capacity to respond to epidemiological crises.
Methodology: Medical residents from two hospitals belonging to PEMEX (Mexico’s state-owned petroleum company) were included in a cross-sectional study. All participants answered a modified version of the survey developed by the University of Lovaina’s Center for Research and Education in Emergency Care. Participants were analyzed according to their relevant “clinical” or “surgical” residency tracks. Data were analyzed using through Chi-square tests, t-tests, Mann–Whitney U tests, Kruskal-Wallis tests, and Pearson and Spearman correlation coefficients with significance established at p < 0.05.
Results: Of a total of 94 resident participants in this study, 56.7% self-perceived themselves as being poorly prepared to confront the pandemic. Only 25.5% of the participants referred previous experience in medical responses to public health emergencies, and only 35.1% reported ever receiving education on this topic.
Conclusions: Medical residents—who have been involved with caring for victims of the pandemic—are under the general perception that they are not prepared, experienced, or educated enough to respond to such a widespread massive public health emergency.
Emergence of Novel SARS-CoV-2 variants in India: second wave
Authors: Adiga Rama , Nayak Varun 
Published: December 2021

Introduction: Globally South-East Asia reported 40% of SARS-CoV-2 infected cases in the fourth week of April 2021. It continued to show an increase with India accounting for 50% of cases worldwide and 30% of global deaths. Genomic surveillance should continue at a rapid pace because of the continuously evolving nature of the virus. The time period of sample collection from the Global Initiative on Sharing All Influenza Data database was concurrent with the surge in new cases seen in the Indian subcontinent.
Methodology: 7,415 sequences were downloaded from Global Initiative on Sharing All Influenza Data between January and April 2021; out of which 4,411 were high coverage genome sequences and were considered for analysis. Phylogenetic analysis were carried out using Nextstrain.
Results: 21A or B.1.617 or delta was the most prevalent lineage in India accounting for 67.7% of the genomes. Next important clades were 20A, 20B and 20I accounting for 23.6%, 11.8% and 12.1% respectively collected between January 2021 and April 2021. The remaining sequences were assigned to clade 20H, 20J, 20D, 20C, 20G,20E,19A and 19B.The spike mutation frequencies of L452R, E484Q and P681R in Indian state of Maharashtra were 62.4%, 66.5% and 61.5% respectively. Two unique N-terminal domain deletion of spike protein were found at position 67 and 68.
Conclusions: The phylogenomics of the delta variant or 21A emerged in neighboring Asian countries of Thailand, Bangladesh, Indonesia and Japan. We analyzed the SARS-CoV-2 genomes from India for mutation characterization of the spike glycoprotein and the nucleocapsid protein.
Les aventures d’Antoine Doinel
Authors: Sommantico Massimiliano , Brennan Audrey , Vezinet Nane 
Published: December 2021

En retraçant la saga Doinel et en nous la renvoyant sous la forme d’un récit cinématographique du passage à l’âge adulte, les auteurs proposent de la lire comme un chemin de subjectivation, avec ses achoppements et ses impossibilités. Les auteurs s’interrogent notamment sur plusieurs aspects de ce chemin : la réponse des adultes aux interrogations d’Antoine adolescent, ses rapports aux parents et à leurs fonctions défaillantes, les vicissitudes intrapsychiques et intersubjectives de sa vie de couple. Loin de faire une psychanalyse du protagoniste ou du metteur en scène, les auteurs lisent quand même la saga entière en l’entrecroisant avec les données autobiographiques mises en évidence par le même Truffaut comme source d’inspiration.
Introduction Éloquence, rhétorique, littérature. Tensions et interrogations
Authors: Mas Marion , Nicolas Catherine , Vibert Anne 
Published: December 2021

Si on assiste à une revalorisation de l’éloquence, dont témoignent la vogue des concours d’éloquence, le succès d’un film comme À voix haute et la réévaluation de l’oral et des arts de la parole dans le parcours des élèves du collège au lycée (expérimentation d’un enseignement d’« éloquence » en troisième, « grand oral » au baccalauréat), les objectifs assignés à son enseignement, à l’école et à l’université, apparaissent encore très hétérogènes. Considérant l’éloquence comme un enjeu éducatif et politique fondamental, en relation étroite avec des pratiques sociales en mutation, les textes réunis ici interrogent les cadres théoriques qui doivent permettre de fonder une didactique de la parole orale, ainsi que des expériences d’enseignement de l’éloquence et leurs enjeux.
La constitution d’une terminologie de l’éloquence française à partir des nomenclatures rhétoriques du grec et du latin
Authors: Nicolas Christian 
Published: December 2021

La communication interroge le passage de la nomenclature technique de la rhétorique du grec au latin, puis du latin au français. Les procédés utilisés sont classiques : emprunt lexical, calque morphologique, calque sémantique. Mais comme ils ne sont pas exclusifs, on obtient souvent en latin des doubles listes, une grecque, acquise par emprunt lexical (ainsi metaphora), l’autre latine, issue d’un calque (ainsi translatio), avec deux mots pour la même notion. Et à date française, ce double héritage gréco-latin laisse de nombreuses traces dans la terminologie.
Vie et mort d’un concours. Le prix d’éloquence à l’Académie française (xixe-xxe siècle)
Authors: Zékian Stéphane 
Published: December 2021

L’article revient sur l’histoire du concours d’éloquence organisé par l’Académie française jusqu’à la fin de la IIIe République. Lié aux conquêtes de l’esprit philosophique dans le dernier tiers du xviiie siècle, ce rituel devint rapidement anachronique après la Révolution, l’éloge des grands écrivains, forme privilégiée du concours, souffrant alors d’une réputation de désuétude. En persistant à maintenir la tradition du genre épidictique, l’Académie suscita la réprobation jusque dans les rangs de ses candidats. Défiée par ses propres lauréats, elle finit par adapter son concours aux nouvelles méthodes en vigueur dans le champ de la critique littéraire. Changement trop tardif, toutefois, pour redorer l’image d’un rituel en décalage avec le discours moderne de l’histoire littéraire.
L’éloge paradoxal dans la littérature française contemporaine
Authors: Reggiani Christelle 
Published: December 2021

Appartenant à une époque en principe révolue du discours public, la forme de l’éloge paradoxal semble datée, cantonnée à l’Antiquité ou à l’âge classique. Or, cette éloquence apparemment désuète connaît une étonnante résurgence dans la littérature française contemporaine (en donnant à cet adjectif sa valeur usuelle dans les études littéraires, pour désigner la période qui débute avec les années 1980). En tentant de cerner plus précisément les contours du phénomène, cet article se propose d’interroger les enjeux d’une telle résurgence — qui ne suppose pas, d’ailleurs, la lecture effective par les écrivains du corpus antique fondateur du genre.
Le concours d’éloquence, un moyen approprié pour développer une approche sensible de la littérature ? L’exemple d’un projet Éloquence en classe de troisième
Authors: Rouvière Nicolas 
Published: December 2021

À partir de l’observation d’une classe de vingt-quatre élèves de 14 et 15 ans, l’article étudie si la préparation d’un concours d’éloquence a permis de développer une approche sensible de la littérature. Après avoir rappelé les théories de la mise en voix comme mode d’appropriation des textes littéraires, il examine par quels vecteurs d’immersion, indépendamment de l’examen des propriétés internes du texte, les élèves ont pu donner à entendre une présence de la parole. Il évoque enfin les résultats constatés pour l’apprentissage et les remédiations qu’il est possible d’envisager.