bluuebunny/crossref_metadata_2025 huggingface dataset:
Study of the structural and mechanical properties of buns made from wheat flour with the addition of powders from viburnum and barberry fruits
Authors:   FGBOU VO «ROSBIOTECH, Dubtsova G.N. , Belyavskaya I.G. ,   FGBOU VO «ROSBIOTECH, Lomakin A.A. ,   JSC «Puratos»
Published: March 2023

Объектами исследования были мелкоштучные хлебобулочные изделия из муки пшеничной высшего сорта с добавлением в рецептуру порошков плодов барбариса или калины в количестве от 2,5 до 7,5 % от массы муки. Представлены результаты определения реологических характеристик мякиша мелкоштучных хлебобулочных изделий, а также их изменения при хранении. Установлены математические зависимости изменения показателей твердости и эластичности мякиша, а также степень черствения определяемых на анализаторе текстуры. Показано, что использование порошков из плодов барбариса и калины в рецептуре хлебобулочных изделий влияют на твердость, эластичность и степень черствения изделий. Изменение твердости изделий в значительной степени при внесении порошка из плодов калины обусловлено более высоким содержанием в нем пищевых волокон. Одинаковое влияние на эластичность изделий порошков из плодов калины и барбариса обусловлено наличием в них одинакового количества кислот. Установлено, что внесение порошков из плодов калины или барбариса в рецептуру хлебобулочных изделий влияет на показатели твердости, эластичности и степени черствения в незначительной степени при дозировке до 5,0 % и в большей при дозировке до 7,5 %. Дозировка 5,0 % рекомендована как оптимальная для производства хлебобулочных изделий, обогащенных биологически активными веществами.
Chinatización de Latinoamérica y el Caribe
Authors: Omaña Alfonso , Vanoni Giuseppe
Published: March 2023

The research values the similarity between the theory of modernization (Americanization-Europeanization) and Chinaticization as an expansionist model in Latin America and the Caribbean (LAC). The study is qualitative to characterize the Chinaticization phenomenon through the trade flow data (import-export) and foreign direct investment to assess the impact on gross domestic product (GDP) and employment in LAC. The results show a deficit in the trade flow of China, a high trend in imports from the primary sector and exports from the secondary. Chinese investment and GDP in LAC show an upward trend with a slowdown in addition to an insignificant impact on employment.
FEATURES OF PUBLICISTIC STYLE IN THE JAPANESE MEDIA LANDSCAPE ON THE EXAMPLE OF THE IDEOLOGEME “EMPEROR” (BASED ON INTERNET MEDIA)
Authors: Сиухина В.А.
Published: March 2023

смена императорской династии в Японии и, соответственно, смена эпох сопровождалась повышенным интересом со стороны журналистов и средств массовой информации. Это значимое событие для всего народа и страны, поскольку император в Японии является «духовным лидером нации» с «божественным» происхождением. Данная статья посвящена функционально-стилистическим особенностям публицистических текстов в японском медиа пространстве на примере исследования идеологемы «император». В статье анализируются способы репрезентации идеологемы «император» в публицистических текстах интернет-СМИ. Материалом для исследования послужили не только тексты СМИ, но также архив языковых электронных корпусов NINJAL и KOTONOHA, поскольку использование корпусных технологий – это одно из наиболее перспективных направлений в современной теоретической и прикладной лингвистике

the change of the imperial dynasty in Japan and, accordingly, the change of eras was accompanied by increased interest from journalists and the media. This is a significant event for the entire people and country, since the emperor in Japan is the "spiritual leader of the nation" with a "divine" origin. This article is devoted to the functional and stylistic features of publicistictexts in the Japanese media space on the example of the study of the ideologeme "emperor". The article analyses the ways of representing the ideologeme "emperor" in publicistictexts of the Internet media. The material for the study was not only media texts, but also the archive of NINJAL and KOTONOHA language electronic corpora, since the use of corpus technologies is one of the most promising research ways in modern theoretical and applied linguistics.
128 Jahre 1. Hochbrücke Levensau – das Kanalufer: Boden-Bauwerks-Interaktion von interagierenden Bohrpfahlwänden/128 years 1. Hochbrücke Levensau – the Canal Bank: Soil-Structure Interaction of interacting Bored Pile Walls
Authors: Meisel Andreas , Albiker Johannes , Drude Olaf , Rasmus Andreas , Seppmann Malte
Published: March 2023

Das Kanalufer im Bereich der Hochbrücke Levensau bei Kiel ist „die“ Engstelle des Nord-Ostsee-Kanals. Aufgrund des erforderlichen Kanalausbaus und der materialbedingten Ermüdung des verwendeten Schweißeisens ist ein Ersatzneubau der bestehenden Fachwerkbogenbrücke mit 163,4 m Spannweite in Planung.

 

Das auf der Südseite des Kanals befindliche Bestandswiderlager beherbergt eines der größten bekannten mitteleuropäischen Überwinterungsquartiere für Fledermäuse, unter anderem des Großen Abendseglers – einer streng geschützten Fledermausart. Daher muss das Bestandswiderlager über den Ersatzneubau der Brücke hinaus als Naturhabitat erhalten werden. Dafür sind aufwendige Sicherungsmaßnahmen am Ufer Süd erforderlich.

 

Zwischen diesem Widerlager und dem Kanal befindet sich eine gepflasterte Böschung mit einer Neigung von 1 : 1,28 und eine Schwergewichts-Uferwand. Aus Sicht der heutigen Normung ist die Böschung rechnerisch nicht standsicher. Darüber hinaus mussten in der Planung die Setzungsempfindlichkeit des Bestandswiderlagers, das Risiko eines Grundwasseraufstaus und die Verringerung der Uferbreite aufgrund des Kanalausbaus berücksichtigt werden. Um diesen besonderen Anforderungen gerecht zu werden, wurde ein System aus interagierenden, aufgelösten Bohrpfahlwänden und als wasserseitige Uferwand eine vorgesetzte, gepanzerte Spundwand entworfen.

 

Aufgrund der gegenseitigen Beeinflussung dieser Wände konnte die Bemessung nicht mit herkömmlichen Methoden, welche in der Regel auf analytischen Ansätzen beruhen, durchgeführt werden. Stattdessen wurden umfangreiche Finite Elemente-Berechnungen mit der Software PLAXIS durchgeführt. In diesem Beitrag werden das Planungskonzept und die Bemessungsansätze der interagierenden Wände vorgestellt.
Einfluss der brandinduzierten Abnahme der Steifigkeit von Elastomerlagern auf die Struktursicherheit von Brückentragwerken/Influence of fire-induced stiffness reduction of elastomeric bearings on the structural safety of bridge structures
Authors: Traxl Roland , Zeiml Matthias , Maier Marcus , Pichler Dieter , Kari Hannes , Lackner Roman
Published: March 2023

Eine Brandeinwirkung auf ungeschützte Elastomer-Brückenlager bewirkt eine thermische Zersetzung des Elastomers und damit einhergehend eine Änderung des mechanischen Verhaltens des gesamten Lagers. Die Abnahme der effektiven Steifigkeit des Lagers führt zu Setzungen mit möglichen Auswirkungen auf das gesamte statische System, welche im Rahmen dieses Beitrags beispielhaft anhand eines bestehenden Brückenbauwerkes mittels neuerer Modellierungsansätze untersucht und diskutiert werden. Hierfür wird zunächst die thermo-chemo-mechanische Modellierung von Elastomerlagern unter Brandeinwirkung erläutert. Mittels numerischer (Finite Elemente) Simulationen kann damit der zeitliche Verlauf der Degradation eines Lagers in Abhängigkeit der Eingangsparameter (thermische Beanspruchung und Lagergeometrie) bestimmt werden. Die damit ermittelte Abnahme der Lagersteifigkeit findet in einem Berechnungsmodell zur Analyse eines Dreifeld-Brückentragwerkes Eingang. Auf diesem Wege wird die zeitliche Entwicklung der Schnittgrößen aufgezeigt und einhergehende Risiken bezüglich der Tragsicherheit der Brücke werden bewertet.
Middle Management Functions in Secondary Schools in Russia and Abroad
Authors: Сергиенко А.Ю.
Published: March 2023

В статье проанализированы функции среднего управленческого персонала общеобразовательных школ в российской и зарубежной практике. Описано распределение функций в среднем звене руководства школами в ряде стран Организации экономического сотрудничества и развития: Великобритании, Ирландии, Дании, Норвегии, Финляндии, Австралии, Новой Зеландии, Франции и др. Представлены результаты исследования состава среднего управленческого звена (заместителей директора) 100 российских школ из 8 регионов Российской Федерации. Раскрыты основные функциидиректора, который по-прежнему имеет наибольшую долю полномочий, и заместителя директора школы по учебно-воспитательной работе. Проанализированы различные модели формирования, организации и финансирования работы школьных управленческих команд. Описана роль и ответственность педагогов и школьных советов в принятии управленческих решений.

The article investigates middle management positions in secondary schools in Russia and abroad. It describes functions performed by middle managers (deputy headmasters) in secondary schools in Russia and in foreign countries. It describes functions performed by school managers in the OECD countries, such as Great Britain, Ireland, Denmark, Norway, Finland, Australia, New Zealand, France, etc. The article presents the results of a survey which was conducted in 100 Russian schools in 8 regions of the Russian Federation. The article describes functions performed by headmasters and deputy headmaster. It analyzes various models of organizing school management teams and supporting them financially. It describes the role and responsibilities of teachers and school councils when it concerns decision making.
Teaching Physics and Mathematics in Schools: Cognitive Skills and Abilities
Authors: Боброва Л.Н. , Никулова Г.А.
Published: March 2023

В статье рассмотрены проблемы формирования предметно-когнитивных компетенций, востребованных при изучении дисциплин ядра физико-математического профиля, и мнения двух сторон образовательного процесса (обучающихся и преподавателей) о значимости когнитивных способностей и навыков для успеха учебных действий. Когнитивно-ориентированный подход к обучению является одним из действенных факторов успеха подготовки школьников к дальнейшему освоению физики и математики — наиболее сложных в школе и востребованных технологизированным обществом предметов. Анализ отечественных и зарубежных публикаций позволил выделить базовые когнитивные компетенции при изучении этих дисциплин. Целью исследования являлось определение характера когнитивных затруднений при освоении учебных дисциплин физико-математического профиля в школе и выявление наиболее значимых когнитивных компетенций (когнитивные способности и навыки) при осуществлении конкретных учебных действий. В статье приводятся результаты анализа данных интернет-опроса, которые позволяют установить виды учебной деятельности при изучении физики и математики, вызывающие у школьников наибольшие затруднения. По мнению педагогов, таковыми являются когнитивно насыщенные действия, что дает основания определить направления совершенствования технологий обучения дисциплинам физико-математического профиля. Сделан вывод о необходимости и путях формирования когнитивных навыков, способствующих успешному освоению дисциплин указанного профиля в школе.

The article treats the development of cognitive competencies that enable students to study mathematics and physics. The article also investigates students’ and teachers’ perception of the importance of cognitive skills and abilities. The article maintains that a cognitive approach to teaching and learning mathematics and physics, which are the most difficult subjects and are in high demand in modern technological society, is a necessary prerequisite for academic success. The analysis of Russian and foreign research enables the authors of the article to single out basic cognitive competencies required to learn the subjects. The aim of the research is to explore the nature of cognitive difficulties experienced by students when learning physics and mathematics in schools and to single out cognitive competencies which facilitate the learning process. The article describes the results of the analysis of an internet survey aimed at investigating difficulties experienced by students during the learning process. According to teachers, such difficulties are associated with underdeveloped cognitive skills. The authors underline the importance of developing cognitive skills which facilitate the learning process in physics and mathematics classes.
Metodologías educativas para el desarrollo de competencias científicas
Authors: Chimbo Jumbo Jhony Janovic , Larreal Bracho Alonso José
Published: March 2023

El presente estudio se enfocó en el análisis y la descripción de las “Metodologías Educativas para el desarrollo de competencias científicas”. Ante la demanda de fomentar nuevas competencias en los educandos producto de la globalización, los avances tecnológicos y la producción de conocimiento, surge la necesidad de transformar los sistemas educativos y los procesos de enseñanza-aprendizaje, con el uso de metodologías innovadoras que propicien la implantación de capacidades en la resolución de problemas, la formación del pensamiento crítico, el aprende a aprender, la colaboración, la comunicación y el trabajo en equipo. El estudio está abordado desde una estructura de investigación analítica documental y bibliográfica descriptiva. Esta metodología permitió la búsqueda de información científica rigurosa en la construcción del marco teórico y el uso de sitios de publicación científica de alto prestigio. Tras el análisis y la descripción de los referentes teóricos se encontró que el desarrollo de competencias es esencial para la producción de conocimiento, la generación de productos y la resolución de problemas. Por otro lado, las metodologías propician aprendizajes interactivos y fortalecen la enseñanza y el perfeccionamiento de capacidades. Se concluye tras el análisis documental que existe una fuerte relación entre las metodologías y el desarrollo de competencias.
Eficacia de la asistencia técnica y cultura de la calidad en socios de la COOPBAM Ltda., aguas verdes, 2018
Authors: Rojas Vela Jerris , Gonzales Alegría Luisa , Rojas Reategui Liulith Estefani
Published: March 2023

El presente estudio expuso como objetivo determinar la relación entre la eficacia de la asistencia técnica y cultura de la calidad en socios de la COOPBAM Ltda., Aguas Verdes, 2018. Se trató de una investigación básica, circunscrita a un enfoque cuantitativo, localizada en un nivel correlacional y que tuvo un diseño no experimental. La muestra estuvo compuesta por 99 socios pertenecientes a la nombrada cooperativa; siendo seleccionados mediante un muestreo probabilístico. En cuanto a los instrumentos, se aplicaron cuestionarios de propia elaboración, uno para cada variable. En torno a los hallazgos alcanzados, en un plano descriptivo, se hallaron niveles medios tanto para la eficacia de la asistencia técnica como la cultura de la calidad con un 62.96% y 68.52%, respectivamente. En el caso de los resultados inferenciales, se encontró que la eficacia de la asistencia técnica se relacionó significativamente con la cultura de la calidad en la COOPBAM Ltda. (X2 calculado=15.93 > X2 tabulado=9.49; p<.05). Por consiguiente, se precedió a rechazar la hipótesis nula enunciada en el estudio.
ANÁLISE FARMACOCINÉTICA E TOXICOLÓGICA IN SILICO PARA DERIVADOS DO ÁCIDO CINÂMICO
Authors: Motta Luiz Frederico , Pinto Cacio Henrique de Souza , Araujo Laura Faria
Published: March 2023

Os análogos do ácido cinâmico são compostos fenólicos naturais que possuem ampla gama de atividades biológicas e terapêuticas. O presente trabalho objetivou predizer, por intermédio de metodologias in sílico, a biodisponibilidade oral e análises farmacocinéticas e toxicológicas para quatro análogos do ácido cinâmico (ácido caféico, ácido ferúlico, ácido p-cumárico e ácido sinápico). O estudo revelou que os análogos apresentam boa biodisponibilidade oral, parâmetros farmacocinéticos e toxicológicos favoráveis. O Screening Virtual realizado para a predição da biodisponibilidade oral indicou que todos os análogos não violam a Regra de Lipinski. O estudo ADME in silico de parâmetros farmacocinéticos, indicou que todos os derivados apresentam elevada absorção intestinal, são permeáveis pelas células Caco-2, não atravessam a barreira hematoencefálica, não inibem a glicoproteína P. Não ocorreu inibição das isoenzimas do complexo citocromo P450 (CYP450). O estudo Toxicológico in silico revelou que os análogos não possuem toxicidade pelo Teste de AMES, não são carcinogênicos e não apresentam toxicidade aguda oral.
The Effect of Baby Massage on Sleep Quality of Baby Aged 1-3 Months
Authors: Sulfianti Sulfianti , Amir Sakinah , Yakub Sitti Asiah
Published: March 2023

Sleep quality is the quality or physiological state obtained during sleep. One way to improve sleep quality is baby massage. Baby massage is a touch therapy or direct contact with the body that can provide a feeling of security and comfort to the baby. This study aims to determine the effect of infant massage on the sleep quality of infants aged 1-3 months. This study used a quasi-experimental method with a one group pre test post test design. The sampling technique in this study was non-probability sampling with purposive sampling method. The results of this study indicate that there is an effect of infant massage on the sleep quality of infants aged 1-3 months in the working area of UPT Puskesmas Watampone, with the Wilcoxon test results obtained a significant number or probability value (0.001) much lower than the significant standard of 0.05 or (p < α), then H0 data is rejected and Ha is accepted, which means there is an effect of infant massage on the sleep quality of infants aged 1-3 months in the work area of the Task Implementation Unit (UPT) of the Watampone Health Center, Bone Regency.
A Fifteen Levels Inverter with A Lower Number of Devices and Higher Performance
Authors: Al-Atbee Osama , Kadhem Basim , Harden Sumer , Abdulhassan Khalid
Published: March 2023

Multi-level inverters, as a result of the significant contributions they have made to the fields of high voltage and renewable energy applications, MLI has earned a prestigious place in the field of industrial electronics applications. The use of MLI makes it possible to generate an alternating voltage from a DC voltage or from voltages that are continuously applied thanks to this capability. The quality of the produced wave depends on minimizing the level of total harmonic distortion (THD) in the ensuing output voltage. Increasing the total number of levels is required in order to bring down the THD. The bigger the number of layers, the lower the THD. On the other hand, this necessitates an increase in the number of power switches that are utilized, in addition to an increase in the number of DC sources for certain types. A greater number of levels are achieved in this work with a reduced number of switches, and the DC source necessitates the use of specialized control over the switches as well as the grading of the DC source values. In order to demonstrate that the suggested converter achieves the needed outcomes, the MATLAB simulator is utilized.
Effect of Swirl Gas Injection on Bubble Characteristics in a Bubble Column
Authors: Ariny Demong  , Andrew Ragai Rigit  , Khairuddin Sanaullah
Published: March 2023

Swirling gas injection is a well-known technique to improve mass transfer in bubble columns. It can be used to create small bubbles with a high surface area-to-volume ratio, which is beneficial for mass transfer. Swirl gas injection can also be used to create a more uniform bubble size distribution and improve the mixing of gas and liquid in the column. This study aims to determine the impact of swirl gas injection on bubble properties, including bubble shape, size, and velocity. A bubble detection approach has been developed for quick and precise determination of bubble size distributions in gas-liquid systems. Advanced digital image processing, including edge detection and bubble edge recognition, is used in this method. The experiment is conducted in a bubble column at a height of 57 cm and 61 cm. The column had a ring sparger and was made of Plexiglas. Tap water was used as the liquid, while air from an air compressor was utilized as the gas phase. The shape, size, population, and velocity of the bubble are measured using a high-speed digital camera. According to this study, the average bubble size reduced as the impeller speed increased, while the population of bubbles increased when the sparger rotation speed increased from 30 to 150 rpm.
Optimization of a Blended-Wing-Body Unmanned Aerial Vehicle Design for Maximum Aerodynamic Lift-to-Drag Ratio
Authors: Fairuz Izzuddin Romli  , Muhammad Aiman Mohammad Sabri  , Rizal Effendy Mohd Nasir
Published: March 2023

Although unmanned aerial vehicle (UAV) has found many applications in various fields, its operation has been constrained by its low flight endurance. To date, several design efforts are pursued to improve this performance and one of them is the exploration of blended-wing-body (BWB) design. In this study, parametric study is conducted on the BWB UAV design of Baseline-VII that is developed by Flight Technology and Test Center (FTTC), Universiti Teknologi MARA Shah Alam, Malaysia. The primary goal is to optimize the current Baseline-VII design for maximum lift-to-drag ratio, which in turn implies a higher flight endurance. Three design parameters are considered: inboard wing sweep angle, outboard wing sweep angle and also inboard wing span. A full-factorial design of experiments (DoE) is applied to set the total 27 design case settings for this study, with three different values considered for each design parameter: 10°, 25° and 50° for inboard and outboard wing sweep angles, and 200 mm, 300 mm and 400 mm for the inboard wing span. The computer-aided design (CAD) models for the design cases are constructed using Solidworks and the resultant aerodynamic lift-to-drag ratio is found through computational fluid dynamics (CFD) simulation analysis using ANSYS Fluent. The collected data is then statistically analysed using regression analysis in MINITAB to construct a representative regression model that aptly capture the effects of the varied design parameters on the design aerodynamic lift-to-drag ratio. Based on the results, it has been found that the maximum lift-to-drag ratio for the modified Baseline-VII UAV design is 2.8119, which is obtained with optimal settings of inboard wing sweep angle = 17.2727°, outboard wing sweep angle = 20.9091° and inboard wing span = 400 mm. This is about 28.4% increment of lift-to-drag ratio from the original Baseline-VII design.
MHD Stagnation-Point Flow and Heat Transfer in a Micropolar Fluid over an Exponentially Vertical Sheet
Authors: Fairul Naim Abu Bakar  , Siti Khuzaimah Soid
Published: March 2023

This paper examines the magneto hydrodynamic (MHD), stagnation-point flow and heat transfer caused by an exponentially stretching/shrinking vertical sheet and the presence of mixed convection (buoyancy effect) in a micropolar fluid. A set of variables is employed to transform the system of partial differential equations (PDEs) to ordinary differential equations (ODEs). The ODEs are then numerically solved in MATLAB software using BVP4c. There are a lot of agreements when compared to previous findings. The impacts of different parameters, such as micropolar, magnetic, mixed convection, radiation, temperature, and stretching/shrinking parameters are displayed graphically. It is found that contradictory phenomena between Micropolar and mixed convection for fluid velocity, angular velocity and temperature distribution profiles. The velocity profile at the vertical plate increases due to the increasing buoyancy, magnetic and radiation parameters. The particle rotation occurs in two phenomena for buoyancy and magnetic parameters and it is reversible for micropolar. The temperature of the fluid decreases with buoyancy and magnetic parameters.
Numerical Study of the Efficiency of a Solar Panel with Heat Sinks
Authors: Jorge Andrés Sierra Del Rio  , Yustin Roman Ardila  , Alejandro Ruiz Sánchez  , Edwin Correa Quintana  , D. Sanin-Villa  , C. Arrieta González  , M. Luna-Del Risco
Published: March 2023

The electrical efficiency of solar photovoltaic (PV) panels depends on their temperature. One of the significant problems consists in the overheating due to the total radiation energy, the ambient temperature, and the low capacity to dissipate this thermal energy. To improve the efficiency of solar panels, a numerical study was carried out using the ANSYS-Fluent 2021 commercial software in which the heat transfer between a solar panel with and without heat sinks was modelled, determining the incidence of fins in power generated by the photovoltaic cell. For the development of the study, initially, the theoretical calculation of the heat transfer and the generated power that occurs in the cell with and without a heat sink was carried out. Therefore, numerical simulation was conducted to analyse the effect of the geometry of the heat sink on the efficiency of the photovoltaic cells; different arrangements of rectangular fins were taken, varying their height (10 mm, 25 mm, and 50 mm). For the model’s configuration, boundary conditions corresponding to physical phenomena such as solar radiation and forced convection were considered. Results show an increase on the solar PV panel efficiency of 0.36%, 0.72%, and 1.07% for the height heat sinks of 10 mm, 25 mm, and 50 mm compared to the commercial PV solar panel without heat dissipation, respectively
An Ionized Outflow in Orion-KL Source I?
Authors: Wright Melvyn , Hirota Tomoya , Forbrich Jan , Plambeck Richard , Bally John , Goddi Ciriaco , Ginsburg Adam , McGuire Brett
Published: March 2023

We present images at 6 and 14 GHz of Source I (SrcI) in the Kleinmann–Low Nebula in Orion. At higher frequencies, from 43 to 340 GHz, images of this source are dominated by thermal emission from dust in a 100 au diameter circumstellar disk, but at 6 and 14 GHz the emission is elongated along the minor axis of the disk, aligned with the SiO bipolar outflow from the central object. Gaussian fits to the 6, 14, 43, and 99 GHz images find a component along the disk minor axis whose flux and length vary with frequency consistent with free–free emission from an ionized outflow. The data favor a broad outflow from a disk wind, rather than a narrow ionized jet. SrcI was undetected in higher-resolution 5 GHz e-MERLIN observations obtained in 2021. The 5–6 GHz structure of SrcI may be resolved out by the high sidelobe structure of the e-MERLIN synthesized beam, or be time variable.
UOCS-IX. AstroSat/UVIT Study of the Open Cluster NGC 2818: Blue Stragglers, Yellow Stragglers, Planetary Nebula, and their Membership
Authors: Rani Sharmila , Pandey Gajendra , Subramaniam Annapurni , Rao N. Kameswara
Published: March 2023

We present the first far-UV (FUV) imaging results of the intermediate-age Galactic open cluster NGC 2818 that has a planetary nebula (PN) within the field using images taken from the Ultra Violet Imaging Telescope (UVIT) aboard AstroSat. We identify cluster members by combining UVIT-detected sources with Gaia EDR3 data. We detect four bright and hot blue straggler stars (BSSs) and two yellow straggler stars (YSSs) based on their location in optical and FUV–optical color–magnitude diagrams. Based on the parameters estimated using spectral energy distributions, we infer that BSSs are either collisional products or might have undetectable white dwarf (WD) companions. Our photometric analysis of YSSs confirms their binarity, consistent with the spectroscopic results. We find YSSs to be formed through a mass-transfer scenario and the hot components are likely to be A-type subdwarfs. A comparison of the radial velocity, Gaia EDR3 proper motion of the PN with the cluster, and reddening toward the PN and the cluster does not rule out the membership of the PN. Comparing the central star’s position with theoretical post‐AGB (pAGB) models suggest that it has already entered the WD cooling phase, and its mass is deduced to be ∼0.66 M
⊙. The corresponding progenitor mass turns out to be ∼2.1 M
⊙, comparable to the turn-off mass of the cluster, implying that the progenitor could have formed in the cluster. We suggest that the NGC 2818 might be one of the few known clusters to host a PN, providing a unique opportunity to test stellar evolution models.
Self-similarities and Power Laws in the Time-resolved Spectra of GRB 190114C, GRB 130427A, GRB 160509A, and GRB 160625B
Authors: Li Liang , Rueda J. A. , Moradi R. , Wang Y. , Xue S. S. , Ruffini R.
Published: March 2023

Binary-driven hypernova (BdHN) models have been adopted to explain the observed properties of long gamma-ray bursts (GRBs). Here, we perform a comprehensive data analysis (temporal and spectral analysis, GeV emission, and afterglow) on GRB 130427A, GRB 160509A, and GRB 160625B. We identify three specific episodes characterized by different observational signatures and show that these episodes can be explained and predicted to occur within the framework of the BdHNe I model, as first observed in GRB 190114C and reported in an accompanying paper. Episode 1 includes the “SN-rise” with the characteristic cutoff power-law spectrum; Episode 2 is initiated by the moment of formation of the black hole, coincident with the onset of the GeV emission and the ultrarelativistic prompt emission phase, and is characterized by a cutoff power law and blackbody spectra; Episode 3 is the “cavity,” with its characteristic featureless spectrum.
CO Excitation in High-z Main-sequence Analogues: Resolved CO(4−3)/CO(3−2) Line Ratios in DYNAMO Galaxies
Authors: Lenkić Laura , Bolatto Alberto D. , Fisher Deanne B. , Abraham Roberto , Glazebrook Karl , Herrera-Camus Rodrigo , Levy Rebecca C. , Obreschkow Danail , Volpert Carolyn G.
Published: March 2023

The spectral line energy distribution of carbon monoxide contains information about the physical conditions of the star-forming molecular hydrogen gas; however, the relation to local radiation field properties is poorly constrained. Using ∼1–2 kpc scale Atacama Large Millimeter Array observations of CO(3−2) and CO(4−3), we characterize the CO(4−3)/CO(3−2) line ratios of local analogues of main-sequence galaxies at z ∼ 1–2, drawn from the DYnamics of Newly Assembled Massive Objects (DYNAMO) sample. We measure CO(4−3)/CO(3−2) across the disk of each galaxy and find a median line ratio of R
43 = 0.54

−
0.15

+
0.16

for the sample. This is higher than literature estimates of local star-forming galaxies and is consistent with multiple lines of evidence that indicate DYNAMO galaxies, despite residing in the local universe, resemble main-sequence galaxies at z ∼ 1–2. Comparing with existing lower-resolution CO(1−0) observations, we find R
41 and R
31 values in the range ∼0.2–0.3 and ∼0.4–0.8, respectively. We combine our kiloparsec-scale resolved line ratio measurements with Hubble Space Telescope observations of Hα to investigate the relation to the star formation rate surface density and compare this relation to expectations from models. We find increasing CO(4−3)/CO(3−2) with increasing star formation rate surface density; however, models overpredict the line ratios across the range of star formation rate surface densities we probe, in particular at the lower range. Finally, Stratospheric Observatory for Infrared Astronomy observations with the High-resolution Airborne Wideband Camera Plus and Field-Imaging Far-Infrared Line Spectrometer reveal low dust temperatures and no deficit of [Cii] emission with respect to the total infrared luminosity.
Criteria for Dynamical Timescale Mass Transfer of Metal-poor Intermediate-mass Stars
Authors: Ge Hongwei , Tout Christopher A , Chen Xuefei , Sarkar Arnab , Walton Dominic J , Han Zhanwen
Published: March 2023

The stability criteria of rapid mass transfer and common-envelope evolution are fundamental in binary star evolution. They determine the mass, mass ratio, and orbital distribution of many important systems, such as X-ray binaries, type Ia supernovae, and merging gravitational-wave sources. We use our adiabatic mass-loss model to systematically survey intermediate-mass (IM) stars’ thresholds for dynamical timescale mass transfer. The impact of metallicity on the stellar responses and critical mass ratios is explored. Both tables (Z = 0.001) and fitting formulae (Z = 0.001 and Z = 0.02) of the critical mass ratios of IM stars are provided. An application of our results to intermediate-mass X-ray binaries (IMXBs) is discussed. We find that the predicted upper limit to mass ratios, as a function of orbital period, is consistent with the observed IMXBs that undergo thermal or nuclear timescale mass transfer. According to the observed peak X-ray luminosity, L
X, we predict the range of L
X for IMXBs as a function of the donor mass and the mass-transfer timescale.
The Supersonic Project: The Eccentricity and Rotational Support of SIGOs and DM GHOSts
Authors: Williams Claire E. , Naoz Smadar , Lake William , Chiou Yeou S. , Burkhart Blakesley , Marinacci Federico , Vogelsberger Mark , Chiaki Gen , Nakazato Yurina , Yoshida Naoki
Published: March 2023

A supersonic relative velocity between dark matter (DM) and baryons (the stream velocity) at the time of recombination induces the formation of low-mass objects with anomalous properties in the early universe. We widen the scope of the “Supersonic Project” paper series to include objects we term Dark Matter + Gas Halos Offset by Streaming (DM GHOSts)—diffuse, DM-enriched structures formed because of a physical offset between the centers of mass of DM and baryonic overdensities. We present an updated numerical investigation of DM GHOSts and Supersonically Induced Gas Objects (SIGOs), including the effects of molecular cooling, in high-resolution hydrodynamic simulations using the AREPO code. Supplemented by an analytical understanding of their ellipsoidal gravitational potentials, we study the population-level properties of these objects, characterizing their morphology, spin, radial mass, and velocity distributions in comparison to classical structures in non-streaming regions. The stream velocity causes deviations from sphericity in both the gas and DM components and lends greater rotational support to the gas. Low-mass (≲105.5
M
⊙) objects in regions of streaming demonstrate core-like rotation and mass profiles. Anomalies in the rotation and morphology of DM GHOSts could represent an early universe analog to observed ultra-faint dwarf galaxies with variations in DM content and unusual rotation curves.
Galaxy Rotation Curves and Universal Scaling Relations: Comparison between Phenomenological and Fermionic Dark Matter Profiles
Authors: Krut A. , Argüelles C. R. , Chavanis P.-H. , Rueda J. A. , Ruffini R.
Published: March 2023

Galaxies show different halo scaling relations such as the radial acceleration relation, the mass discrepancy acceleration relation (MDAR), or the dark matter (DM) surface density relation. At difference with traditional studies using phenomenological ΛCDM halos, we analyze the above relations assuming that DM halos are formed through a maximum entropy principle (MEP) in which the fermionic (quantum) nature of the DM particles is dully accounted for. For the first time, a competitive DM model based on first physical principles, such as (quantum) statistical-mechanics and thermodynamics, is tested against a large data set of galactic observables. In particular, we compare the fermionic DM model with empirical DM profiles: the Navarro–Frenk–White (NFW) model, a generalized NFW model accounting for baryonic feedback, the Einasto model, and the Burkert model. For this task, we use a large sample of 120 galaxies taken from the Spitzer Photometry and Accurate Rotation Curves data set, from which we infer the DM content to compare with the models. We find that the radial acceleration relation and MDAR are well explained by all the models with comparable accuracy, while the fits to the individual rotation curves, in contrast, show that cored DM halos are statistically preferred with respect to the cuspy NFW profile. However, very different physical principles justify the flat inner-halo slope in the most-favored DM profiles: while generalized NFW or Einasto models rely on complex baryonic feedback processes, the MEP scenario involves a quasi-thermodynamic equilibrium of the DM particles.
Magnetic Inclination Evolution of Accreting Neutron Stars in Intermediate/Low-mass X-Ray Binaries
Authors: Yang Hao-ran , Li Xiang-dong
Published: March 2023

The magnetic inclination angle χ, namely the angle between the spin and magnetic axes of a neutron star, plays a vital role in its observational characteristics. However, there are few systematic investigations of its long-term evolution, especially for accreting NSs in binary systems. Applying the model of Biryukov & Abolmasov and the binary evolution code MESA, we simultaneously simulate the evolution of the accretion rate, spin period, magnetic field, and magnetic inclination angle of accreting NSs in intermediate/low X-ray binaries. We show that the evolution of χ depends not only on the initial parameters of the binary systems, but also on the mass transfer history and the efficiency of pulsar loss. Based on the calculated results we present the characteristic distribution of χ for various types of systems including ultracompact X-ray binaries, binary millisecond pulsars, and ultraluminous X-ray sources, and discuss their possible observational implications.
The easternmost record of the largest anguine lizard that has ever lived – Pseudopus pannonicus (Squamata, Anguidae): new fossils from the late Neogene of Eastern Europe
Authors: Loréal Erwan , Syromyatnikova Elena V. , Danilov Igor G. , Čerňanský Andrej
Published: March 2023

We here report on new material of Pseudopus pannonicus, the iconic and largest-known representative of the lizard clade Anguinae, from several late Neogene localities across Moldova, Ukraine, and regions of the North Caucasus – the last representing the easternmost known occurrence of this extinct species. Today, Pseudopus apodus, the last extant Pseudopus representative, is found in a variety of habitats ranging from South-East Europe to Central Asia. In the late Cenozoic of Europe, however, several extinct species of Pseudopus existed. Among them, interestingly, P. pannonicus displayed the largest spatiotemporal range of the genus, occurring from Spain to the North Caucasus and known from the Late Miocene to the Early Pleistocene. Although it has been reported in a plethora of European localities, P. pannonicus is a taxon “with several questionings related to its few diagnostic features vs. numerous features shared with P. apodus”. The elements described here exhibit some variability, but their overall morphology undoubtedly resembles that of previously described material of P. pannonicus. The lacrimal from Tatareshty, moreover, represents the first fossil lacrimal reported for P. pannonicus. Besides, the fairly complete maxilla with a length of almost 3.7 cm is the largest maxilla ever reported for this taxon, expanding our knowledge of its gigantism. In addition, several features are described and discussed regarding their diagnostic relevance for P. pannonicus. The relationship between body size and some of these features was tested statistically. Consequently, two cranial characters and one vertebral feature peculiar to P. pannonicus were retained in the diagnosis of the species.
Multi-gene phylogeny and morphology of two new Phyllosticta (Phyllostictaceae, Botryosphaeriales) species from China
Authors: Wang Cheng-Bin , Yang Jing , Li Yong , Xue Han , Piao Chun-Gen , Jiang Ning
Published: March 2023

Phyllosticta (Phyllostictaceae, Botryosphaeriales) includes plant pathogens, endophytes and saprobes, occurring on various hosts worldwide. During the present study, isolates associated with leaf spots were obtained from the hosts Quercus aliena and Viburnum odoratissimum, and identified based on morphological features and phylogenetic inference from the analyses of five loci (ITS, LSU, tef1, act and gapdh). Results supported the introduction of two novel species, namely Phyllosticta anhuiensis and P. guangdongensis. Phylogenetically, P. anhuiensis and P. guangdongensis formed two well-separated lineages in the P. concentrica and P. capitalensis species complexes, distinguishing from all presently accepted species in this genus by DNA sequence data. Morphologically, P. anhuiensis and P. guangdongensis have the typical structure of the genus Phyllosticta, and differed from their closely related species by the length of the conidial appendage.
Une histoire des luttes contre la pauvreté
Authors: Fontaine Laurence , Mycinski Cyprien
Published: March 2023

À partir des enseignements tirés de son étude sur la pauvreté depuis l’Ancien Régime, l’historienne Laurence Fontaine s’interroge sur les similitudes avec les controverses contemporaines à propos de l’assistanat, de la migration des pauvres ou de la réflexion sur les biens communs.
L’écospiritualité, un chemin entre Terre et Ciel
Authors: Maxime Egger Michel
Published: March 2023

L’écologie prend de plus en plus une dimension spirituelle. Les pratiques doivent être complétées par une conversion intérieure qui invite à redonner à la nature sa dimension de mystère. La tradition chrétienne orientale fournit des ressources qu’il est bon de connaître.
Ciliga Papers, an uncharted territory in the history of dissent and communism
Authors: Mihaljević Josip
Published: March 2023

Cet article vise à mettre en avant le parcours fascinant d’Ante Ciliga, journaliste, écrivain, dissident communiste et émigré politique, et à mettre en valeur l’histoire de son fonds d’archive ( Ante Ciliga Papers ) déposé à la Bibliothèque nationale et universitaire de Zagreb. Cet article révèle également la singulière histoire des archives de Ciliga et montre comment elles ont récemment été exploitées par l’historiographie.
Défendre les revendications nationales ukrainiennes dans la revue dissidente Kontinent
Authors: Cador Johanna
Published: March 2023

Cet article propose une analyse du discours sur l’Ukraine dans la revue Kontinent , fondée à Paris en 1974 par des dissidents russes et est-européens. Première publication émigrée de langue russe à défendre explicitement l’indépendance de l’Ukraine, elle fut l’une des plateformes de dialogue de l’émigration russe et ukrainienne et a permis d’initier, au sein de l’émigration russe et en Union soviétique, un changement d’état d’esprit quant à la question ukrainienne.
The impact of population aging on economic growth: a case study on China
Authors: Liu Yue , Chen Liming , Lv Liangting , Failler Pierre
Published: March 2023

The impact of population aging on economic growth is a very important issue in the process of population structure change. This paper first proposes research hypotheses based on a systematic literature review and theoretical analysis of the negative and positive effects of population aging on economic growth. Then, based on the data of 30 provinces in the Chinese Mainland from 2000 to 2019, this paper empirically tests the impact of population aging on economic growth and its impact mechanism using a static panel data model, a dynamic panel data model and a mediating effect model. Our empirical analysis leads to the following conclusions. First, population aging has a significant inhibitory effect on economic growth. Second, the industrial structure upgrading plays a mediating role in the process of population aging affecting economic growth; that is, population aging inhibits economic growth by affecting the overall upgrading of the industrial structure as well as the industrial rationalization and optimization. Last, some policy implications are proposed based on the research conclusions.
Reforzamiento estructural de edificaciones patrimoniales en tierra de 1 y 2 pisos: aplicación de la normativa AIS-610-EP-2017
Authors: Ruiz Valencia Daniel Mauricio , Galindo Jaramillo Paula Rossana , Hernández Niño Anyi Lizeth , Reyez Ortiz Juan Carlos , Restrepo Palacio Manuela , Barrera Ospina Natalia , Martínez Murcia José Gustavo , López Pérez Cecilia Teresa
Published: March 2023

Los españoles que conquistaron la zona andina latinoamericana construyeron edificios en adobe y tapia apisonada. Por esta razón, el 90% de los edificios patrimoniales en Colombia están construidos en tierra; la mayoría ubicados en zonas de amenaza sísmica intermedia y alta. Considerando que estas edificaciones son sísmicamente vulnerables, en 2019 se incluyó la norma AIS-610-EP-2017 en la reglamentación sismo-resistente del país (norma para reforzamiento sísmico de edificios patrimoniales en tierra). Utilizando esta norma, se analizaron dos edificios construidos en el siglo XVI. Los muros fueron reforzados con placas de acero (o de madera). Los resultados indican que para cargas sísmicas solo el 24% de los muros sin refuerzo tendrían tensiones menores que la resistencia a la tracción de la tierra, mientras que en los muros reforzados este porcentaje es del 98%. Asimismo, las tensiones en los elementos de refuerzo (acero y madera) se mantienen por debajo de los límites permisibles.
Le moulin hydraulique fortifié de Canet (Aude) : un château/usine des archevêques de Narbonne (XIIIe-début XXe siècle)
Authors: Durand Sylvain , Loppe Frédéric , Lombardi-Peissel Françoise , Boisse Henri de la , Guibal Frédéric
Published: March 2023

Propriété privée, le moulin de Canet conserve de spectaculaires vestiges médiévaux et des adjonctions postérieures témoignant de son intense utilisation durant sept siècles. Ces dernières années, des recherches bénévoles (histoire, archéologie du bâti, dendrochronologie…) ont abouti à une approche globale de ce véritable château-usine sur l’eau édifié sur la rive droite de l’Aude (commune de Canet (Aude)). La documentation a mis en exergue plusieurs documents inédits, comme la copie d’un procès de 1236 illustrant les toutes premières décennies du moulin ou la comptabilité de la baylie de Canet pour les années 1334-1335 et 1346-1347. On y lit la trajectoire d’un édifice servant à la fois de grand grenier et d’usine à l’archevêque, particulièrement rentable durant tout le Moyen Âge, avant qu’un lent déclin ne s’amorce durant la période moderne en raison des nombreuses et coûteuses réparations apportées à la chaussée. Après la Révolution, plusieurs décennies de quasi-désaffection du site précèdent une vaste modernisation en minoterie, avant l’abandon de l’activité en 1928, après un incendie. L’étude du bâti a révélé plusieurs phases de construction témoignant d’un chantier planifié du XIIIe siècle sur l’usine nord, mais aussi de reconstructions fréquentes de l’usine sud (bas Moyen Âge, époques moderne et contemporaine), en raison de crues ou pour prolonger son activité. Enfin, la présence de pieux et traverses immergés de la chaussée a permis de réaliser des prélèvements dendrochronologiques, dont un a livré une datation du XVe siècle.
Les formes d’attachement au culte de Notre-Dame La Daurade à Toulouse : entre dévotion, patrimoine et tradition
Authors: Rigou-Chemin Bénédicte
Published: March 2023

La dévotion populaire consacrée à Notre-Dame La Noire à Toulouse s’inscrit dans une tradition séculaire. Si certains aspects de cette dévotion relèvent de pratiques abandonnées, la tradition continue d’opérer pour les nombreux dévots qui au contact de la Vierge, mobilisent de nouvelles formes d’action. À travers l’identification de trois d’entre-elles : la médiation culturelle, la donation et la transmission orale, l’article étudie le rapport des dévots à la tradition contemporaine. Ces formes d’action constituent autant d’attachements qui relient les dévots à une tradition et par ces biais continuent de la rendre vivante.