bluuebunny/crossref_metadata_2025_split huggingface dataset:
Asteroseismic modelling strategies in the PLATO era
Authors: Bétrisey J. , Buldgen G. , Reese D. R. , Farnir M. , Dupret M.-A. , Khan S. , Goupil M.-J. , Eggenberger P. , Meynet G. 
Published: June 2023

Context. Asteroseismology experienced a breakthrough in the last two decades thanks to the so-called photometry revolution with space-based missions such as CoRoT, Kepler, and TESS. Because asteroseismic modelling will be part of the pipeline of the future PLATO mission, it is relevant to compare some of the current modelling strategies and discuss the limitations and remaining challenges for PLATO. In this first paper, we focused on modelling techniques treating directly the seismic information.
Aims. We compared two modelling strategies by directly fitting the individual frequencies or by coupling a mean density inversion with a fit of the frequency separation ratios.
Methods. We applied these two modelling approaches to six synthetic targets with a patched atmosphere, for which the observed frequencies were obtained with a non-adiabatic oscillation code. We then studied ten actual targets from the Kepler LEGACY sample.
Results. As is well known, the fit of the individual frequencies is very sensitive to the surface effects and to the choice of the underlying prescription for semi-empirical surface effects. This significantly limits the accuracy and precision that can be achieved for the stellar parameters. The mass and radius tend to be overestimated, and the age therefore tends to be underestimated. In contrast, the second strategy, which is based on mean density inversions and on the ratios, efficiently damps the surface effects and allows us to obtain precise and accurate stellar parameters. The average statistical precision of our selection of targets from the LEGACY sample with this second strategy is 1.9% for the mass, 0.7% for the radius, and 4.1% for the age. This is well within the PLATO mission requirements. The addition of the inverted mean density to the constraints significantly improves the precision of the stellar parameters by 20%, 33%, and 16% on average for the stellar mass, radius, and age, respectively.
Conclusions. The modelling strategy based on mean density inversions and frequencies separation ratios showed promising results for PLATO because it achieved a precision and accuracy on the stellar parameters that meet the PLATO mission requirements with ten Kepler LEGACY targets. The strategy also left some margin for other unaccounted systematics, such as the choice of the physical ingredients of the stellar models or the stellar activity.
Die berufliche Situation von Physiotherapeut*innen im Schweizer Gesundheitswesen
Authors: Reicherzer Leah , Wirz Markus , Nast Irina 
Published: June 2023

Zusammenfassung
Hintergrund In der Schweizer Physiotherapie ist wie in anderen Gesundheitsberufen ein akuter Mangel an Fachkräften absehbar. Die vorliegende Studie zeigt eine aktuelle Übersicht zur Berufsgruppe und gibt eine Einschätzung zur Situation der Fachkräfte in der Schweizer Physiotherapie.
Ziel Analyse der Merkmale der Berufsgruppe (Demografie, Beschäftigungsgrade, Arbeitsplätze) sowie Berufsaustritte und Knappheitsindikatoren zur Einschätzung des Fachkräftemangels.
Methode Analysiert wurden die kumulierten Daten der Strukturerhebung des Bundesamtes für Statistik aus den Jahren 2016–2018. Um aus der Stichprobe auf die Gesamtpopulation der Physiotherapeut*innen zu schließen, wurden gerundete Gewichte zugrunde gelegt. Geschätzt wurden Kennzahlen zur Berufsgruppe, der Berufstätigkeit und Berufsaustritte sowie Indikatoren zum Fachkräftemangel.
Ergebnisse Zwischen 2016–2018 arbeiteten in der Schweiz schätzungsweise 15 199 Physiotherapeut*innen (75,8 % weiblich, Durchschnittsalter 42,1 ± 12,1 Jahre), davon 12 842 (84,5 %) im Gesundheitssektor. Die Mehrheit (72,2 %) der Beschäftigten im Gesundheitswesen arbeitete im ambulanten Bereich. Im Durchschnitt arbeiteten Physiotherapeut*innen 32,7 (95 % KI 32,5–32,8) Stunden pro Woche. Schätzungsweise 28,2 % der ausgebildeten Physiotherapeut*innen verließen den Gesundheitssektor, um eine Laufbahn in einem anderen Beruf einzuschlagen (10,8 %), um ihre Tätigkeit zu unterbrechen oder ganz aufzugeben (9,4 %) oder um als Physiotherapeut*in in einem anderen Wirtschaftssektor zu arbeiten (7,9 %). Im Vergleich zur Gesamtwirtschaft deuten eine hohe Einwanderungsrate (17,2 %) und eine hohe Beschäftigungswachstumsrate (152,8 %) sowie eine niedrige Arbeitslosenquote (0,9 %) auf einen Fachkräftemangel in diesem Beruf hin.
Schlussfolgerungen Die Analyse der Strukturdaten 2016–2018 bestätigen den Trend des Beschäftigungswachstums in der Physiotherapie und weisen auf einen Fachkräftemangel hin. Es sollten geeignete Maßnahmen getroffen werden, um diesem Trend entgegenzuwirken und ihn weiter zu untersuchen. Diese sollten die Untersuchung und Evaluation neuer Versorgungsmodelle zur Verbesserung von Karriereperspektiven umfassen, die zum Erhalt von Arbeitskräften beitragen können, sowie die Erweiterung der aktuellen therapeutischen Leistungen durch neue, technologiebasierte Ansätze und die Erhöhung der Anzahl verfügbarer Studienplätze.
New Thiazole Orange Derivatives for Improved Fluorescence Signaling of DNA FIT Probes
Authors: Seitz Oliver , Homer Amal 
Published: June 2023

AbstractForced intercalation probes (FIT probes) are nucleic acid probes in which an intercalator dye of the thiazole orange (TO) family serves as a surrogate nucleobase. Hybridization of FIT probes is accompanied by enhancements of fluorescence. Looking for ways to increase turn-on and brightness of fluorescence, we herein report the synthesis of new fluorogenic base surrogates. In total, nine different TO derivatives were introduced into FIT probes. Fluorescence measurements in six different sequences revealed that substitution at both the quinoline and the benzothiazole part affects fluorescence turn-on upon hybridization and brightness of probe–target duplexes. A TO derivative containing a tricyclic benzothiazole provided FIT probes signaling hybridization by up to 18.6-fold enhancement of fluorescence. Improved fluorescence quantum yields (Φds up to 0.53) and high extinction coefficients (ε518 up to 91000 M–1·cm–1) make this dye an interesting, and in some sequences superior, alternative to the canonical thiazole orange used previously in FIT probes.
Quality of Life in Children and Adolescents with Neurofibromatosis Type 1: A Single-Center Observational Study
Authors: Hofmann Sarah , Winkler Sandra , Baumann Matthias , Zellner Herta 
Published: June 2023

AbstractThis article obtains an overview of the health status of children and adolescents with neurofibromatosis type 1 (NF1) with a focus on the clinical course of the disease, neuropsychodiagnostic findings, and their impact on quality of life (QoL). In this observational study, data were collected from 24 children and adolescents with NF1 who were cared for at the University Hospital in Innsbruck, Austria, from 2008 to 2022. Data were collected every 6 to 12 months from routine check-ups, including clinical features and imaging findings. Results of neuropsychodiagnostic tests and the KINDL questionnaire to assess QoL were included. Of 24 patients, 15 underwent a neuropsychological examination. Attention performance was examined in 11 of them. Eight of 11 (72%) showed an attention deficit. Assessment for specific developmental disorders showed visual-spatial difficulties in 12/15 (80%) patients. The KINDL questionnaire values ranged from 58.22 to 97.92 (0 stands for reduced QoL, 100 for very good QoL). Patients with scoliosis had a lower range of QoL (56.33–73.96). No trend in QoL was observed in children and adolescents with plexiform neurofibromas, below-average intelligence or optic gliomas. NF1 patients show very different clinical courses. Regular neuropsychological assessment especially with regard to visual-spatial skills and attention deficits is necessary to offer appropriate support, promote children's development, and thus improve their QoL.
Describing proton transfer modes in shared proton systems with constrained nuclear–electronic orbital methods
Authors: Zhang Yuzhe , Xu Xi , Yang Nan , Chen Zehua , Yang Yang 
Published: June 2023

Proton transfer is crucial in various chemical and biological processes. Because of significant nuclear quantum effects, accurate and efficient description of proton transfer remains a great challenge. In this Communication, we apply constrained nuclear–electronic orbital density functional theory (CNEO-DFT) and constrained nuclear–electronic orbital molecular dynamics (CNEO-MD) to three prototypical shared proton systems and investigate their proton transfer modes. We find that with a good description of nuclear quantum effects, CNEO-DFT and CNEO-MD can well describe the geometries and vibrational spectra of the shared proton systems. Such a good performance is in significant contrast to DFT and DFT-based ab initio molecular dynamics, which often fail for shared proton systems. As an efficient method based on classical simulations, CNEO-MD is promising for future investigations of larger and more complex proton transfer systems.
High-level studies of the singlet states of quadricyclane, including analysis of a new experimental vacuum ultraviolet absorption spectrum by configuration interaction and density functional calculations
Authors: Palmer Michael H. , Hoffmann Søren Vrønning , Jones Nykola C. , Coreno Marcello , de Simone Monica , Grazioli Cesare , Aitken R. Alan , Peureux Coralyse 
Published: June 2023

A synchrotron-based vacuum ultraviolet absorption spectrum (VUV) of quadricyclane (QC) is reported with energies up to 10.8 eV. Extensive vibrational structure has been extracted from the broad maxima by fitting short energy ranges of the VUV spectrum to high level polynomial functions and processing the regular residuals. Comparison of these data with our recent high-resolution photoelectron spectral of QC showed that this structure must be attributed to Rydberg states (RS). Several of these appear before the valence states at higher energies. Both types of states have been calculated by configuration interaction, including symmetry-adapted cluster studies (SAC-CI) and time dependent density functional theoretical methods (TDDFT). There is a close correlation between the SAC-CI vertical excitation energies (VEE) and both Becke 3-parameter hybrid functional (B3LYP), especially Coulomb-attenuating method-B3LYP determined ones. The VEE for several low-lying s-, p, d-, and f-RS have been determined by SAC-CI and adiabatic excitation energies by TDDFT methods. Searches for equilibrium structures for 11,3A2 and 11B1 states for QC led to rearrangement to a norbornadiene structure. Determination of the experimental 00 band positions, which show extremely low cross-sections, has been assisted by matching features in the spectra with Franck–Condon (FC) fits. Herzberg–Teller (HT) vibrational profiles for the RS are more intense than the FC ones, but only at high energy, and are attributed to up to ten quanta. The vibrational fine structure of the RS calculated by both FC and HT procedures gives an easy route to generating HT profiles for ionic states, which usually require non-standard procedures.
Emotional self-disclosure and stance-taking within affective narratives on YouTube
Authors: Pelttari Sanna 
Published: June 2023

AbstractThis case study explores how Spanish YouTubers construct affective narratives in terms of self-disclosure in the context of sensitive topics. In addition, it sheds light on how YouTubers take up a stance within the stories, and the components of this stance-taking. Stories and stance-taking will be evaluated through multimodal analysis, observing both the verbal and non-verbal cues used. According to the results, YouTubers’ affective narratives are characterized by emphasis on explicitly named feelings and by non-verbal cues that reinforce the transmission of mediated emotion, as well as functioning to boost self-disclosure. The narratives reveal a kind of stance-continuum that underlines the dynamic nature of phenomena, where YouTubers gradually construct, in conjunction with self-disclosure, the act of stance-taking, starting from self-oriented positioning, then moving toward a more instructive and self-to-others perspective, and finally acting as stance-influencers of the community in which they are involved.
Highly response gas sensor based the Au-ZnO films processed by combining magnetron sputtering and Ar plasma treatment
Authors: Wang Guodong , Chen Tingyu , Guo Lanlan , Wang Wei , Wang Haohan , Wang Yuanyuan , Zeng Hua , Liu Xiaolian , Wang Junjun , Yang Yingli 
Published: June 2023

Abstract
The excellent and promising gas sensors not only have high response, but also can be easily integrated with other semiconductor devices to form an intelligent chip. In order to realize this goal, an effective strategy is proposed to combine the magnetron sputtering and Ar plasma treatment. As a result, a high-performance sensor based on Au-ZnO films is achieved at the optimal technology parameter, with high response (Ra/Rg) of 190 to 100 ppm isopropanol (IPA), rapid response/recovery speed of 1 s/18 s, and low detection limit of 100 ppb at 300 °C. Moreover, the mechanisms of the improvement on the sensing properties of the as-fabricated sensor are discussed. The present work provides new ideas for the future development of integrating gas sensors with functional circuits to form a smart chip that can perform data acquisition, processing and storage.
Structural and spin-glass properties of single crystal J
eff = ½ pyrochlore antiferromagnet NaCdCo2F7: correlating T
f with magnetic-bond-disorder
Authors: Kancko A , Giester G , Colman R H 
Published: June 2023

Abstract
Weak bond disorder disrupts the expected spin-liquid ground-state of the ideal S = 1/2 Heisenberg pyrochlore antiferromagnet. Here we introduce a single crystal study of the structural and magnetic properties of the bond-disordered pyrochlore NaCdCo2F7. The magnetic susceptibility appears isotropic, with a large negative Curie-Weiss temperature (θCW = −108(1) K), however no magnetic order is observed on cooling until a spin-glass transition at T
f = 4.0 K. AC-susceptibility measurements show a frequency-dependent shift of the associated cusp in χ’ at T
f, that can be fitted well by the empirical Vogel-Fulcher law. The magnetic moment of μ
eff = 5.4(1) μ
B/Co2+ indicates a significant orbital contribution and heat capacity measurements show that down to 1.8 K, well below T
f, only S
mag ∼

2
/
3

Rln(2) of the magnetic entropy is recovered, suggestive of residual continued dynamics. Structural and magnetism comparisons are made with the other known members of the NaA’’Co2F7 family (A″ = Ca2+, Sr2+), confirming the expected relationship between spin-glass freezing temperature, and extent of magnetic bond disorder brought about by the size mismatch between A-site ions.
Development of ultra-broadband sound absorber based on double-layered irregular honeycomb microperforated panel
Authors: Li Heming , Wu Jinwu , Mao Qibo , Yan Shanlin 
Published: June 2023

Abstract
In this study, a broadband sound absorber was developed using a double-layered irregular honeycomb microperforated panel (MPP) structure and a particle swarm optimization (PSO) algorithm to address the issue of broadband sound absorption of MPPs. An acoustic impedance model of the designed sound absorber and an optimization algorithm were implemented to obtain the structural configuration parameters for quasi-perfect sound absorption. The coupling effect between the resonant elements and the optimized structural configuration parameters enabled broadband and high-efficiency sound absorption. The impedance tube experimental results demonstrated an excellent broadband sound absorption level within the range of linear acoustics, and the designed triad and tetrad structures exhibited more than 70% absorption efficiency in the range of 609–4 002 Hz and 518–5 162 Hz, respectively. This study provides a design method and insights into the design, promotion, and application of broadband sound absorbers.
Modified propagation of gravitational waves from the early radiation era
Authors: He Yutong , Roper Pol Alberto , Brandenburg Axel 
Published: June 2023

AbstractWe study the propagation of cosmological gravitational wave (GW) backgrounds from the early radiation era until the present day in modified theories of gravity. Comparing to general relativity (GR), we study the effects that modified gravity parameters, such as the GW friction αMand the tensor speed excessαT, have on the present-day GW spectrum. We use both the WKB estimate, which provides an analytical description but fails at superhorizon scales, and numerical simulations that allow us to go beyond the WKB approximation. We show that a constantαTmakes relatively insignificant changes to the GR solution, especially taking into account the constraints on its value from GW observations by the LIGO-Virgo collaboration, whileαMcan introduce modifications to the spectral slopes of the GW energy spectrum in the low-frequency regime depending on the considered time evolution ofαM. The latter effect is additional to the damping or growth occurring equally at all scales that can be predicted by the WKB approximation. In light of the recent observations by pulsar timing array (PTA) collaborations, and the potential observations by future detectors such as SKA, LISA, DECIGO, BBO, or ET, we show that, in most of the cases, constraints cannot be placed on the effects ofαMand the initial GW energy density ℰ*GWseparately, but only on the combined effects of the two, unless the signal is observed at different frequency ranges. In particular, we provide some constraints on the combined effects from the reported PTA observations.
Tunable magnetic and electronic transport properties of Co1+xV2-xO4
Authors: Sahoo L , Mohapatra N 
Published: June 2023

Abstract
Here we present a study on the electronic and magnetic properties of the members of Co1+xV2-xO4 series. The solid-state reaction method was used to grow the polycrystalline samples. Using the localised electron relationship and the various hopping transport regimes, we analyse the electronic transport outcomes. Also, the results of magnetic measurements reveal the ferrimagnetic phase transition and non-collinear spin configuration of these vanadate samples. Additionally, our work illustrates the variation of electronic and magnetic properties with the Co-concentration values.
Electronic structure and elasticity of two-dimensional metals of group 10: A DFT study
Authors: Abidi Kameyab Raza , Koskinen Pekka 
Published: June 2023

Abstract
The discovery of two-dimensional (2D) iron monolayer in graphene pores stimulated experimental and computational material scientists to investigate low-dimensional elemental metals. There have been many advances in their synthesis, stability, and properties in the last few years. Inspired by these advancements, we investigated the electronic structure and elasticity of free-standing monolayers of group 10 elemental metals, viz. Ni, Pd, and Pt. Using density-functional theory (DFT), we explored the energetic, geometric, electronic, and elastic properties of hexagonal, honeycomb, and square lattice structures of each element, in both planar and buckled forms. Among planar configurations, the order of increasing stability is honeycomb, square, and hexagonal. In buckled form, this ordering remains the same for Pt but is reversed for Ni and Pd. Upon geometrical optimization, the extent of buckling for Pt was found to be small compared to Ni and Pd. The effect of buckling on the electronic structure was further scrutinized through the projected density of states, and it was found that highly buckled configurations derive their of states from 3D bulk, which highlights the correlation between buckled configurations and 3D bulk. For Pt in buckled square and honeycomb lattices, the density of states correlates more closely to their 2D monolayers. Regarding elasticity, the in-plane elastic constants indicate that all planar and buckled square lattices are unstable.
Micromagnetic Simulations of Emergent Monopole Defects and Magnetization Reversal in Connected and Dipolar Kagome Artificial Spin Ice
Authors: Singh Charu , Ray Nirat 
Published: June 2023

Abstract
Artificial spin ice (ASI) materials, created by lithographically patterning nanoscale magnets in desired geometries, have shown a number of interesting phenomena, such as emergent magnetic monopoles (monopole defects), collective dynamics and phase transitions. The control of monopole defects with external stimuli such as magnetic and electric fields, strain, electric currents etc. would be of much interest in fabrication of future devices. In this work, we investigate the magnetization reversal as a function of the connectivity of the Kagome ASI, using micromagnetic simulations. The domain wall motion is expected to play an important role in the connected spin ice, whereas the dipolar interactions dominate for the unconnected case. The magnetic microstate of each lattice is uniquely determined by the vertex configuration, with the Kagome lattice supporting a six-fold-degenerate vertex state, obeying either a two-in/one-out (vertex charge +q) or one-in/two-out (vertex charge q) ice rule. We analyze the fraction of each vertex type to highlight changes in the magnetic microstate as a function of applied magnetic field. Our results could be correlated with magneto-transport measurements and direct imaging of vertex states in ASI using magnetic force microscopy.
Hydrogen adsorption and diffusion through two dimensional aluminium : A first-principles investigation
Authors: Yadav Kiran , Ray Nirat 
Published: June 2023

Abstract
With the exponentially growing global energy demand, green and clean renewable energy has become the need of the hour. To address the impending energy crisis, hydrogen has been proposed as an efficient and sustainable renewable energy source that has potential to replace conventional sources such as fossil fuels. Owing to their large surface-to-volume ratio and unique physiochemical properties, two-dimensional (2D) materials have been more recently explored for their energy storage potential. In this study, we investigate the adsorption of hydrogen molecule on a two-dimensional, free-standing aluminum monolayer using first-principles density functional theory calculations. We examine adsorption at four high symmetry sites in the honeycomb lattice: T (directly above the Al atom on the surface), D (directly above the Al atom in the buckled layer), H (hollow site at the center of the honeycomb lattice), and X (midway between Al bonds). The movement of hydrogen molecule during diffusion through the honeycomb hollow ring center of the aluminum monolayer is also studied using the Nudged Elastic Band (NEB) approach.
Emergent Phenomena in KTaO3/SrTiO3 Heterostructure
Authors: Bhattacharya Sanchari , Jena Soumyasree , Datta Sanjoy 
Published: June 2023

Abstract
KTaO3 has become a new material of attraction for exploring various exotic properties at its surface and interfaces. To explore the substrate effect of KTaO3, we have studied a new heterostructure made by KTaO3 and SrTiO3. KTaO3 is a 5d polar perovskite with the complementary planes of KO− and

TaO

2
+

, whereas SrTiO3 is a 3d non-polar perovskite with alternative stacking SrO0 and

TiO

2
0

. By taking the epitaxial layers of SrTiO3 on top of KTaO3, we have created two different interfaces along (0 0 1), which are

KO

−

/

TiO

2
0

and

TaO

2
+

/

SrO

0

. We have studied these two interfaces by using density functional theory. In

KO

−

/

TiO

2
0

interface, the signature of two-dimensional hole gas (2DHG) has been found. Though the interface turns to insulator when epitaxial layers reach beyond 4.5 u.c. The other one, i.e.,

TaO

2
+

/

SrO

0

interface, shows the typical behaviour of two-dimensional electron gas (2DEG), only at the epitaxial layer 2.5 uc. The presence of both types of carriers in a single system for different kinds of interfaces has great use in various device applications.