bluuebunny/crossref_metadata_2025_split huggingface dataset:
COVID-19, Pregnancy, and Diabetes Mellitus
Authors: Kleinwechter Helmut J. , Weber Katharina S. , Liedtke Tatjana P , Schäfer-Graf Ute , Groten Tanja , Rüdiger Mario , Pecks Ulrich 
Published: November 2023

AbstractDuring the severe acute respiratory distress virus coronavirus type 2
(SARS-CoV-2) pandemic, many women were infected during their pregnancies. The
SARS-CoV-2-induced coronavirus disease 19 (COVID-19) has an impact on maternal
health and pregnancy outcomes; peripartum and perinatal morbidity and mortality
are increased. Pregnancy is considered a risk factor for severe COVID-19 course.
Additional risk factors during pregnancy are diabetes mellitus, gestational
diabetes mellitus (GDM), and obesity. Systemic inflammation can lead to severe
metabolic dysregulation with ketoacidosis. The endocrine pancreas is a target
organ for SARS-CoV-2 and the fetal risk depends on inflammation of the placenta.
Up to now there is no evidence that SARS-CoV-2 infection during pregnancy leads
to permanent diabetes in mothers or their offspring via triggering autoimmunity
or beta cell destruction. The frequently observed increased prevalence of GDM
compared to the years before the pandemic is most likely due to changed
lifestyle during lockdown. Furthermore, severe COVID-19 may be associated with
the development of GDM due to worsening of glucose tolerance. Vaccination with a
mRNA vaccine is safe and highly effective to prevent infection and to reduce
hospitalization. Registries support offering evidence-based recommendations on
vaccination for pregnant women. Even with the current omicron virus variant,
there are increased risks for symptomatic and unvaccinated pregnant women.
Statistical analysis of research integrity construction in 466 Chinese universities with medical programs
Authors: Wang Fei , Zhu Chaowen 
Published: November 2023

AbstractThe medical field is prone to research misconduct, with serious cases exposed in China in recent years. In compliance with the guidelines from the Ministry of Education requiring higher education institutions to establish dedicated websites for research integrity, this study conducted online statistics on 466 universities to investigate the status of research integrity in Chinese universities with medical programs. Analysis of the data collected from official websites revealed progress in research integrity construction, but numerous issues persist, including scattered information, infrequent publication of warning cases or advanced deeds, lack of dedicated research integrity personnel, and limited disclosure of contact, whistleblowing channels and annual reports. Therefore, this paper proposes four improvement recommendations and provides incentive measures to ensure their implementation.
Relationship between perceived value, student experience, and university reputation: structural equation modeling
Authors: Amado Marelby , Guzmán Alfredo , Juarez Fernando 
Published: November 2023

AbstractResearch regarding university management from the field of marketing has been increasing, as well as the differential strategies designed by universities to attract and retain both students and teachers. One of them is obtaining high-quality accreditations. Its impact on the process and purchasing behavior of educational services is recognized. For this reason, this research aims to relate the three constructs in higher education institutions and compare their behavior both in high-quality accredited universities and in non-accredited ones in order to identify the incidence of accreditation. The research used an analysis of the data by structural equations model and the results showed that both the student’s experience and the perceived value influence reputation. Meantime, the student’s experience influences the perceived value and no differences are evident in the model because of the accreditation in high quality.
Ultra-high vacuum compatible reactor for model catalyst study of ammonia synthesis at ambient pressure
Authors: Zhang K. , Wandall L. H. , Vernieres J. , Kibsgaard J. , Chorkendorff I. 
Published: November 2023

A high sensitivity reactor was developed to study slow reactions, such as ammonia synthesis over low surface area model catalysts at 1 bar and up to 550 °C. The reactor is connected to an ultra-high vacuum system with a transferable sample design, which allows for cleaning, preparation, and spectroscopic characterization of samples before and after the reaction without exposure to any contaminated environment, such as air. A quasi-closed small volume (250 µl) quartz glass reaction cell is integrated through a capillary with a quartz glass sniffer tube connected to a mass spectrometer. The capillary reduces the 1 bar pressure in the cell to 10−7 mbar in the sniffer tube and mass spectrometer chamber. A quartz fiber-guided laser is used to heat up the sample, and the temperature can be regulated by the proportional–integral–derivative controlled laser power output for fast reaction kinetics research. Proof of principle ammonia synthesis experiments in this reactor at 1 bar, 350–500 °C on Fe(111) single crystal and mass-selected Ru clusters supported on CeO2 thin film yield kinetic parameters that agree very well to those reported in the literature.
Copular constructions in Makhuwa‑Enahara
Authors: Kujath Elizabeth , van der Wal Jenneke 
Published: November 2023

Abstract
This paper describes the possible predication strategies in Makhuwa-Enahara and under what circumstances each
occurs. Makhuwa-Enahara (Bantu P31E) has three main copular constructions: Predicative Lowering, the invariant copulas
ti (affirmative) and kahi (negative), and the verbal copulas ori and
okhala. It was previously posited that the choice between predication strategies depended on the syntactic
type of the predicate, but further analysis shows that deference is instead given to the semantic type of the predication. The
underlying structures of Makhuwa-Enahara are identical for Equation, Predication, and Identification; Specification shows a
different structure, and Locative predication yet another. Predicative Lowering and the invariant copula are argued to be
different spell-outs of the Pred head, depending on its raised position within the syntactic tree and whether or not the initial
element of the predicate is long enough to undergo Predicative Lowering.
On the acceptability of the not so dummy auxiliary ‘do’ in Dutch
Authors: Sert Cansel , Hubers Ferdy , Redl Theresa , Hoop Helen de 
Published: November 2023

Abstract
The auxiliary doen ‘do’ in standard Dutch is usually described as ‘dummy’ because it supposedly adds nothing substantial to the meaning of the sentence. We argue, however, that the auxiliary does have a function in the sentence, as a marker of either habitual or intentional aspect. In an online production experiment, we investigated the acceptability of the allegedly dummy auxiliary doen ‘do’. Results show that the degree of acceptability of the auxiliary doen ‘do’ is very low, even lower than the widely disapproved use of hun ‘them’ as a subject in Dutch. However, because a significant difference was found in the acceptability between the habitual and the intentional reading, we conclude that the auxiliary doen ‘do’ in Dutch cannot be dummy, i.e. semantically empty.
Degrees and manners as kinds
Authors: Yu Jianrong , Heynen Lena 
Published: November 2023

Abstract
We examine equative constructions in Dutch, comparing it to their counterparts in two other Germanic languages, namely English and German. We observe that there is significant variation in the morphosyntax of equative constructions based on whether what is being compared is a gradable adjective or a verb (e.g. Kim is as tall as Sue and Kim ran as Sue (did)) across the three languages and that the morphosyntax corresponds to meaning differences, determining what exactly can be compared in these constructions. Based on these observations, we propose an account for Dutch equative constructions based on eventuality kinds, which has implications for the semantics of comparison constructions in general in relation to the ontological status of degrees and manners in the grammar.
Sobre la enseñanza de la elisión sintáctica en la clase de gramática del español como lengua extranjera o segunda
(ELE/L2)
Authors: Zulaica Hernández Iker 
Published: November 2023

Resumen
En este artículo se aboga por la inclusión de la elipsis verbal y nominal en el aula de español para extranjeros,
principalmente en niveles intermedios y avanzados. Un análisis cualitativo de libros de texto y manuales de gramática del español
revela que los procesos de elipsis se ignoran frecuentemente en este tipo de materiales didácticos. Se presenta una descripción
lingüística sucinta de los principales procesos elípticos en español (elipsis verbal, nominal, fragmentos y anáfora de complemento
nulo) y se propone una serie de actividades didácticas de muestra para la práctica de estas construcciones y su inclusión en
materiales pedagógicos. Al mismo tiempo, se defiende la importancia de la llamada gramática del discurso y de los mecanismos de
coherencia y cohesión discursiva, de los que la elipsis es un ejemplo, en la construcción del discurso complejo y, en
consecuencia, en la enseñanza integral del español como segunda lengua.
Molecular dynamic simulation of the influence of vibration effects on scratching processes in Varied crystal orientations
Authors: Qiu-Yang Zheng , Zhen-Yu Zhou , Yu Li , Jianhao Chen , Sen-Bin Ye , Zhong-Yu Piao 
Published: November 2023

Abstract
The research delves into the uncharted terrain of crystal orientation’s effect on high-frequency vibration-assisted processing of single-crystal copper, employing molecular dynamics to devise non-vibration, one-dimensional (1D), and two-dimensional (2D) vibration-assisted scratching models. The innovative discovery is the ‘peak-shaving’ effect, invoked by high-frequency vibration, which significantly mitigates surface irregularities on single-crystal copper, enhancing surface quality and material plasticity, thereby facilitating machinability. A key revelation is the superior efficacy of 2D vibration in material fortification relative to 1D vibration. Another novel finding is the amplified plasticity of single-crystal copper with a (111) crystal orientation under vibration-assisted excitation, linked to the varying directions of dislocation slip contingent upon crystal orientations. The pioneering observation that the induction of vibration during scratching dynamically propels dislocation defect structures, leading to the generation of a significant volume of vacant and interstitial atomic sites, underscores the pronounced influence of 2D vibration. This research contributes invaluable microscopic perspectives into the operative mechanism of crystal orientation’s impact on high-frequency vibration-assisted processing.
Microstructure-driven mechanical and electromechanical phenomena in additively manufactured nanocrystalline zinc oxide
Authors: Gallivan Rebecca A , Aitken Zachary H , Chamoun-Farah Antoine , Zhang Yong-Wei , Greer Julia R 
Published: November 2023

Abstract
Advances in nanoscale additive manufacturing (AM) offer great opportunities to expand nanotechnologies; however, the size effects in these printed remain largely unexplored. Using both in situ nanomechanical and electrical experiments and molecular dynamics (MD) simulations, this study investigates additively manufactured nano-architected nanocrystalline ZnO (nc-ZnO) with ∼7 nm grains and dimensions spanning 0.25–4 μm. These nano-scale ceramics are fabricated through printing and subsequent burning of metal ion-containing hydrogels to produce oxide structures. Electromechanical behavior is shown to result from random ordering in the microstructure and can be modeled through a statistical treatment. A size effect in the failure behavior of AM nc-ZnO is also observed and characterized by the changes in deformation behavior and suppression of brittle failure. MD simulations provide insights to the role of grain boundaries and grain boundary plasticity on both electromechanical behavior and failure mechanisms in nc-ZnO. The frameworks developed in this paper extend to other AM nanocrystalline materials and provide quantification of microstructurally-drive limitations to precision in materials property design.
Modified Hawking radiation of Schwarzschild-like black hole in bumblebee gravity model
Authors: Sakallı İzzet , Yörük Esra 
Published: November 2023

Abstract
In this article, we study the Hawking radiation of the Schwarzschild black hole within the bumblebee gravity model (SBHBGM). Considering classical approaches involving Killing vectors and the standard Hamilton-Jacobi method, the Hawking radiation of SBHBGM is computed. The Painlevé-Gullstrand, ingoing Eddington-Finkelstein, and Kruskal-Szekeres coordinate systems are introduced as alternatives to the naive coordinates, providing insights into gravitational behavior around massive objects like black holes. We thus examine whether Hawking radiation’s temperature depends on the chosen coordinate system or not. Incorporating the Generalized Uncertainty Principle (GUP) into the Hamilton-Jacobi equation, a modified equation characterizing particle behavior near the event horizon is obtained. By calculating the tunneling probability using the modified action, the GUP-induced modifications to the emitted particle’s behavior are considered, resulting in the derivation of the modified temperature of the SBHBGM. In conclusion, we explore the quantum-adjusted entropy of SBHBGM and its associated temperature and assess the findings we have acquired.
Measuring the quantum state of the electromagnetic field at finite temperature
Authors: Juárez-Amaro R , Moya-Cessa H M 
Published: November 2023

Abstract
We show that it is possible to reconstruct the quantum state of light in a cavity subject to dissipation at finite temperature. By passing atoms through the cavity it is shown that the decay does not prevent the measurement of s-parametrized quasiprobability distributions. Because such distributions contain whole information about the initial quantized field, it is possible to recover its complete information.
Thermal analysis and Joule-Thomson expansion of black hole exhibiting metric-affine gravity*
Authors: Yasir Muhammad , Xia 夏 Tiecheng 铁成 , Javed Faisal , Mustafa G. 
Published: November 2023

Abstract
This study examines a recently hypothesized black hole, which is a perfect solution of metric-affine gravity with a positive cosmological constant, and its thermodynamic features as well as the Joule-Thomson expansion. We develop some thermodynamical quantities, such as volume, Gibbs free energy, and heat capacity, using the entropy and Hawking temperature. We also examine the first law of thermodynamics and thermal fluctuations, which might eliminate certain black hole instabilities. In this regard, a phase transition from unstable to stable is conceivable when the first law order corrections are present. In addition, we study the efficiency of this system as a heat engine and the effect of metric-affine gravity for the physical parameters

,

,

,

, and

. Further, we study the Joule-Thomson coefficient and inversion temperature, and observe the isenthalpic curves in the

plane. In metric-affine gravity, a comparison is made between a van der Waals fluid and a black hole to study their similarities and differences.
4th International Conference on Sustainable Futures: Environmental, Technological, Social and Economic Matters
Authors: Semerikov S O , Chukharev S M , Sakhno S I , Striuk A M , Iatsyshin Andrii V , Klimov S V , Osadchyi V V , Vakaliuk T A , Nechypurenko P P , Bondarenko O V , Danylchuk H B , Artemchuk V O 
Published: November 2023

AbstractThis paper presents the preface of the proceedings for the 4th International Conference on Sustainable Futures: Environmental, Technological, Social, and Economic Matters (ICSF 2023), a multidisciplinary event that explores the challenges and opportunities of sustainability in various domains. The preface outlines the conference’s objectives, themes, workshops, and topics, as well as its contribution to advancing sustainable development and global dialogue. It also acknowledges the efforts and inputs of various stakeholders who have made the conference possible, especially in light of the pandemic situation. Furthermore, it thanks IOP Publishing for its support and flexibility in facilitating open access publishing. The paper concludes by looking forward to future editions of ICSF and the ongoing quest for a more sustainable and interconnected world. The paper invites readers to delve into the rich and diverse content that shapes this influential conference.
Investigation of the influence of lime content in the charge and its quality on the sintering process of iron ore raw materials
Authors: Saveliev S G , Kondratenko M M 
Published: November 2023

Abstract
Main objectives of the work was to study the influence of degree of roasting of lime contained in the charge on the sintering process and sinter quality, as well as comparing the impact of changes in the mass fraction of active CaO in the charge by varying degrees of burning lime, and by varying the content of lime in the charge. It is shown that the intensifying effect of lime on the sintering process occurs as a result of a decrease in the content of small classes in the charge. When the lime content in the charge is equal to 3 %, an increase in the degree of lime firing from 5 to 96 % led to an increase in the specific productivity of the plant from 0.96 to 1.87 t/(m
2 · hour). The independence of sintering parameters from the content of active CaO in lime with its constant content in the sinter charge and the decisive role of the content of active CaO in the sinter charge with its constant content in lime are confirmed. A new approach to the production of lime for agglomeration processes is proposed: it should have the lowest cost of the active CaO contained in it.
Modelling and experimental studies of the stress-strain state of compressed concrete filled steel tube elements of a continuous section
Authors: Yermolenko D A , Sakhno S I , Palyvoda O A , Yanova L O , Pischikova O V 
Published: November 2023

Abstract
Modern building structures must meet the requirements of efficiency and resource-saving. The main direction for implementing these requirements is to reduce the consumption of steel (14–16%) and save cement (10–12%). These tasks can be solved through the rational combination of concrete and steel when they work together and the use of high-strength materials. One embodiment of this task is the use of Concrete Filled Steel Tube (CFST) structures. The purpose of this study is to identify the possibility of using the Drucker-Prager model by comparing the results of test studies on short compressed Concrete Filled Steel Tube (CFST) elements with different strength and deformation characteristics of the concrete core to the results from finite element analysis (FEA) modelling of corresponding CFST elements. Additionally, the behaviour of a steel pipe without a concrete core was investigated. The results show that the FEA method used in this work is sufficiently accurate for studying the behaviours of short CFST elements. The modelling technique adopted in the study made it possible to consider the redistribution of stresses in the concrete and pipe dynamically. The stress distribution patterns inside the concrete during both linear and non-linear deformations of CFST elements, as well as the characteristics of the interaction between the concrete and pipe in the contact zone, have been revealed.
Influence of deformation degree on grains size and borders between them in metal alloys during cold rolling of sheets
Authors: Chubenko V A , Saveliev S G , Khinotska A A , Yarosh T P , Kondratenko M M 
Published: November 2023

Abstract
The internal structure of metal products was investigated and it was identified that it affects quality and workability of equipment parts. Changes that occur in metal products structure during cold treatment by pressure, which lead to changes in physical and mechanical properties of products, have been analyzed. It was established that grains and borders between them, which determine internal structure of metal products, change their shape and size during cold rolling, depending on percentage reduction value. It is offered to consider grain borders as amorphous layer. Methodology has been developed to study influence of deformation degree during cold rolling to grain size of metal internal structure and intergranular layer volume. Intergranular surface area, its volume and part of surface volume from metal volume were determined. Parameters of internal structure of low-carbon steel were calculated depending on reduction value during cold rolling. According to study results, interconnection between grains size and deformation degree was established; and percentage reduction influence to grain size and borders between them was determined, obtaining a minimum standard grain size with percentage reduction of over 80 %; yield strength and its growth for metal alloy during cold rolling are established, which allows controlling the strength of steel by adjusting the grain size and their junction surface. It is shown that with an increase in deformation degree, yield strength of metal product material increases in hyperbolic dependence, and fraction of amorphous layer and strength properties of low-carbon steel change almost equally in exponential functions. It is revealed that during cold rolling, it is possible to control internal properties of obtained product by adjusting reduction value.
Technology of forming a wear-resistant thermite alloy layer based on the Fe-Cr-C system by self-propagating high-temperature synthesis
Authors: Skidin I E , Vodennikova O S , Saithareiev L N , Baboshko D Y , Barmenshinova M B 
Published: November 2023

Abstract
The technology of forming a thermite alloy layer on the basis of Fe-Cr-C system on a metal basis by self-propagating high-temperature synthesis is offered, which allows to obtain cast functionallayers withphysico-mechanical and exploitativeproperties. The optimal technological parameters of the forming a wear-resistant layer of thermite alloy process are determined: the amount of metal filler with the maximum yield of suitable alloy, the heating temperature of the thermite charge and the mold to obtain additional heat, the temperature ranges of the melt to melt the metal base with further formation of the functional layer. Metallographic studies of the obtained wear-resistant layer of thermite allo[y showed that the zone of formation of the functional layer is characterized by the stability of the macrostructure and the positive effect of non-metallic inclusions in the form of Al2O3, which influences the formation of chromium carbides in the obtained alloy by creating the effect of inoculative modification of thermite alloy.