bluuebunny/crossref_metadata_2025_split huggingface dataset:
TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system
Authors: Timmermans M. , Dransfield G. , Gillon M. , Triaud A. H. M. J. , Rackham B. V. , Aganze C. , Barkaoui K. , Briceño C. , Burgasser A. J. , Collins K. A. , Cointepas M. , Dévora-Pajares M. , Ducrot E. , Zúñiga-Fernández S. , Howell S. B. , Kaltenegger L. , Murray C. A. , Pass E. K. , Quinn S. N. , Raymond S. N. , Sebastian D. , Stassun K. G. , Ziegler C. , Almenara J. M. , Benkhaldoun Z. , Bonfils X. , Christiansen J. L. , Davoudi F. , de Wit J. , Delrez L. , Demory B.-O. , Fong W. , Fűrész G. , Ghachoui M. , Garcia L. J. , Gómez Maqueo Chew Y. , Hooton M. J. , Horne K. , Günther M. N. , Jehin E. , Jenkins J. M. , Law N. , Mann A. W. , Murgas F. , Pozuelos F. J. , Pedersen P. P. , Queloz D. , Ricker G. , Rowden P. , Schwarz R. P. , Seager S. , Smart R. L. , Srdoc G. , Striegel S. , Thompson S. , Vanderspek R. , Winn J. N. 
Published: April 2024

Context. Small planets transiting bright nearby stars are essential to our understanding of the formation and evolution of exoplanetary systems. However, few constitute prime targets for atmospheric characterization, and even fewer are part of multiple star systems.
Aims. This work aims to validate TOI-4336 A b, a sub-Neptune-sized exoplanet candidate identified by the TESS space-based transit survey around a nearby M dwarf.
Methods. We validated the planetary nature of TOI-4336 A b through the global analysis of TESS and follow-up multi-band high-precision photometric data from ground-based telescopes, medium- and high-resolution spectroscopy of the host star, high-resolution speckle imaging, and archival images.
Results. The newly discovered exoplanet TOI-4336 A b has a radius of 2.1 ± 0.1 R⊕. Its host star is an M3.5-dwarf star with a mass of 0.33 ± 0.01 M⊙ and a radius of 0.33 ± 0.02 R⊙, and is a member of a hierarchical triple M-dwarf system 22 pc away from the Sun. The planet’s orbital period of 16.3 days places it at the inner edge of the habitable zone of its host star, which is the brightest of the inner binary pair. The parameters of the system make TOI-4336 A b an extremely promising target for the detailed atmospheric characterization of a temperate sub-Neptune by transit transmission spectroscopy with JWST.
Variation of the stellar initial mass function in semi-analytical models
Authors: Fontanot Fabio , La Barbera Francesco , De Lucia Gabriella , Cecchi Rachele , Xie Lizhi , Hirschmann Michaela , Bruzual Gustavo , Charlot Stéphane , Vazdekis Alexandre 
Published: April 2024

Context. In our previous work, we derived the CR-IGIMF, which is a new scenario for a variable stellar initial mass function (IMF) that combines numerical results on the role played by cosmic rays (CR) in setting the thermal state of star-forming gas with the analytical approach of the integrated galaxy-wide IMF (IGIMF).
Aims. In this work, we study the implications of this scenario for the properties of local early-type galaxies (ETG) as inferred from dynamical, photometric, and spectroscopic studies.
Methods. We implemented a library of CR-IGIMF shapes in the framework of the galaxy evolution and assembly (GAEA) model. GAEA provides predictions for the physical and photometric properties of model galaxies and for their chemical composition. Our realization includes a self-consistent derivation of the synthetic spectral energy distribution for each model galaxy, which allows a direct derivation of the mass fraction in the mean IMF of low-mass stars (i.e., the dwarf-to-giant ratio, fdg) and a comparison with IMF-sensitive spectral features.
Results. The predictions of the GAEA model implementing the CR-IGIMF confirm our previous findings: It correctly reproduces both the observed excess of z ∼ 0 dynamical mass (mass-to-light ratio) with respect to spectroscopic (photometric) estimates assuming a universal MW-like IMF, and the observed increase in [α/Fe] ratios with stellar mass in spheroidal galaxies. Moreover, this realization reproduces the increasing trends of fdg and IMF-sensitive line strengths with velocity dispersion, although the predicted relations are significantly shallower than the observed ones.
Conclusions. Our results show that the CR-IGIMF is a promising scenario that reproduces at the same time dynamical, photometric, and spectroscopic indications of a varying IMF in local ETGs. The shallow relations found for spectral indices suggest that either a stronger variability as a function of galaxy properties or additional dependences (e.g., as a function of star forming gas metallicity) might be required to match the strength of the observed trends.
The phase curve of the ultra-hot Jupiter WASP-167b as seen by TESS
Authors: Kálmán Sz. , Derekas A. , Csizmadia Sz. , Pál A. , Szabó R. , Smith A. M. S. , Nagy K. , Hegedűs V. , Mitnyan T. , Szigeti L. , Szabó Gy. M. 
Published: April 2024

Context. Ultra-hot Jupiters (UHJs) orbiting pulsating A/F stars represent an important subset of the exoplanetary demographic. They are excellent candidates for the study of exoplanetary atmospheres, and are astrophysical laboratories for the investigation of planet-to- star interactions.
Aims. We analysed the TESS light curve of the WASP-167 system, consisting of an F1V star and a substellar companion on a ~2.02 day orbit.
Methods. We modelled the combination of the ellipsoidal variability and the Doppler beaming to measure the mass of WASP-167b, and the reflection effect to obtain constraints on the geometric albedo, while placing a special emphasis on noise separation. We implemented a basic model to determine the dayside (TDay), nightside (TNight), and intrinsic (TInternal) temperatures of WASP-167b, and put a constraint on its Bond albedo.
Results. We confirm the transit parameters of the planet seen in the literature. We find that a resonant ~2P−1 stellar signal (which may originate from planet-to-star interactions) interferes with the phase curve analysis. After careful and thought-out treatment of this signal, we find Mp = 0.34 ± 0.22 MJ. We measure a dayside temperature of 2790 ± 100 K, classifying WASP-167b as an UHJ. We find a 2σ upper limit of 0.51 on its Bond albedo, and determine the geometric albedo at 0.34 ± 0.11 (1σ uncertainty).
Conclusions. With an occultation depth of 106.8 ± 27.3 ppm in the TESS passband, the UHJ WASP-167b is an excellent target for atmospheric studies, especially those at thermal wavelength ranges, where the stellar pulsations are expected to be less influential.
The impact of stellar bars on star-formation quenching: Insights from a spatially resolved analysis in the local Universe
Authors: Scaloni Letizia , Rodighiero Giulia , Enia Andrea , Gruppioni Carlotta , Annibali Francesca , Bisigello Laura , Cassata Paolo , Corsini Enrico Maria , Casasola Viviana , Lofaro Cristina Maria , Bianchetti Alessandro 
Published: April 2024

Context. Stellar bars are common morphological structures in the local Universe; according to optical and NIR surveys, they are present in about two-thirds of disc galaxies. These elongated structures are also believed to play a crucial role in secular evolutionary processes, because they are able to efficiently redistribute gas, stars, and angular momentum within their hosts, although it remains unclear as to whether they enhance or suppress star formation. A useful tool to investigate this ambiguity is the main sequence (MS) relation, which tightly links stellar mass (M⋆) and star formation rate (SFR).
Aims. The main goal of this work is to explore star-formation processes in barred galaxies in order to assess the relevance of bars in star-formation quenching and whether or not they affect the typical log-linear trend of the resolved MS.
Methods. To this purpose, we carried out a spatially resolved analysis on subkiloparsec (subkpc) scales for a sample of six nearby barred galaxies. We collected multi-wavelength photometric data from far-ultraviolet (FUV) to far-infrared (FIR) from the DustPedia database and applied a panchromatic spectral energy distribution (SED) fitting procedure on square apertures of fixed angular size (8″ × 8″) using the magphys code.
Results. For each galaxy, we obtain the distributions of stellar mass and SFR surface density and relate them in the log Σ⋆ − log ΣSFR plane, deriving the spatially resolved MS relation. Although significant galaxy-to-galaxy variations are in place, we infer the presence of a common anti-correlation track in correspondence with the bar-hosting region, which shows systematically lower SFRs. This central quiescent signature can be interpreted as the result of a bar-driven depletion of gas reservoirs and a consequent halting of star formation. Our findings appear to support an inside-out quenching scenario.
Offenlegung eigener Krisen- und Behandlungserfahrungen von
Mitarbeitenden psychiatrischer Einrichtungen in Berlin und Brandenburg – eine
ungenutzte Ressource zum Abbau von Stigma?
Authors: von Peter Sebastian , Ponew Angel , Strelen Anna , Lust Christian , Speerforck Sven , Stützle Stefan 
Published: April 2024

Zusammenfassung
Ziel Diese Arbeit ist Teil einer Studie, die eigene Krisen- und
Behandlungserfahrungen (=EKB) von Mitarbeitenden psychiatrischer Kliniken in
Berlin und Brandenburg untersucht. Sie folgt der Frage, warum psychiatrische
Fachkräfte ihre EKB (nicht) offenlegen und wie sie diese Offenlegung
erleben.
Methode In einer Online-Befragung wurden 182 psychiatrische Fachkräfte
nach der Offenlegung ihrer EKB im Arbeitskontext befragt. Die Daten wurden
deskriptiv und analytisch ausgewertet.
Ergebnisse Die Befragten legten ihre EKB vor allem gegenüber Vorgesetzten
und nahestehenden Kolleg*innen offen. Sie haben positive, im Einzelfall aber
auch gravierende Erfahrungen gemacht. Zentrale Gründe gegen eine Offenlegung
waren die Befürchtungen, sich angreifbar zu machen und die berufliche Identität
zu gefährden, sowie Scham.
Schlussfolgerungen Die Offenlegung von EKB ist nicht immer die richtige
Strategie für Mitarbeitende psychiatrischer Einrichtungen. Gleichzeitig kann sie
als Mittel verstanden werden, um verinnerlichtes und öffentliches Stigma zu
verringern.
Oral Health Awareness and Oral Hygiene Practices among Married Women of Al-Ahsa, Saudi Arabia
Authors: Bokhari Syed Akhtar Hussain , Sanikommu Suresh , BuHulayqah Abdullah , Al-Momen Hussain , Al-Zuriq Abdullah , Khurshid Zohaib 
Published: April 2024

Abstract
Objective Awareness of mothers about oral health and their oral hygiene practices may benefit both maternal and infant oral health. This study assessed the oral health awareness and oral hygiene practices among married females.
Materials and Methods A cross-sectional study was conducted on 430 females using a self-administered close-ended questionnaire that was distributed through WhatsApp application. Chi-squared test and t-test were applied with significance level of p-value less than or equal to 0.05.
Results Three hundred and fifty-six females responded to the survey. Ninety percent women brushed their teeth daily, 52% used dental floss, and 58% used mouthwash. Seventy-nine percent patients visited a dentist when had a dental problem. Females more than or equal 75% think that dentist visit is important or consider it safe and 34% had visited the dentist during pregnancy. Sixty-eight percent women think that incidence of oral disease increases during pregnancy, and 42% agreed that oral disease affect the baby's oral health. Sixty-seven percent were aware that women could develop pregnancy gingivitis and 8% think that poor oral health can lead to birth of premature baby. Mothers with less than or equal to 10 years of married life have shown significantly (≤0.04) higher knowledge and good oral hygiene practices than other older mothers. Regression analysis showed a significant (p ≤ 0.035) relationship between incidence of oral disease in pregnancy with married life years; effect of oral disease on baby' health with age and occupation; use of dental floss with income and living area; knowledge of pregnancy gingivitis with number of children; effect of bad oral hygiene on pregnancy outcome with income; and dentist visit during pregnancy with married life years.
Conclusion Females with higher education, less years of married life, and higher number of children were better aware of oral health and oral hygiene practices and its effect on their baby's oral health.
Airway Management for Acute and Reconstructive Burns: Our 30-year Experience
Authors: Mittal Brita M. , McQuitty Robert A. , Talon Mark , McQuitty Alexis L. 
Published: April 2024

AbstractAirway management in both acute and reconstructive burn patients can be a major challenge for evaluation, intubation, and securing the airway in the setting of altered airway structure. Airway evaluation in both acute and reconstructive patients includes examination for evidence of laryngeal and supraglottic edema and structural changes due to trauma and/or scarring that will impact the successful approach to acquiring an airway for surgical procedures and medical recovery. The approach to acquiring a successful airway is rarely standard laryngoscopy and often requires fiberoptic bronchoscopy and a variety of airway manipulation techniques. Tracheostomy should be reserved for those with classic requirements of ventilatory and/or mechanical failure or severe upper airway burns. Even securing an airway for surgical procedures, especially with patients suffering injuries involving the head and neck, can be nonstandard and requires creative and flexible approaches to be successful. After much trial and error over the past 30 years in a large burn center, our multidisciplinary team has learned many valuable lessons. This review will focus on our current approach to safe airway management in acute and reconstructive burn patients.
Modified Technique to Protect the Superior Sagittal Sinus in Cranial Vault Reconstruction for Scaphocephaly
Authors: Pereira Leopoldina Peixoto , Oliveira Joana , Santos Patrícia , Polónia Patrícia , Vaz Rui , Pereira Josué 
Published: April 2024

AbstractScaphocephaly remains the most prevalent form of isolated single-suture synostosis. In most Pediatric Neurosurgery Centers, the treatment consists of extensive calvarial reshaping operations which are performed in relatively late ages. We described a modified open technique of cranial vault reconstruction for scaphocephaly and we report the anesthetic approach and how it influences our results and enables the performance of this surgery at earlier ages. A total of 47 patients with an average age of 11 ± 2.72 months underwent to the same surgical technique. Blood transfusion during the surgical intervention was needed in 25 patients (53%), and 22 patients (46.8%) did not need blood transfusion. None of the 14 patients who used tranexamic acid (TXA) needed blood transfusions. We reported a statistically significant association between the use of TXA and blood transfusion (p < 0.0001), with a decreased need for blood transfusion with the use of TXA. Besides sagittal suturectomy, we create new parasagittal sutures by replacing the prematurely fused one, and 1.5 cm of the anterior segment of bone of those 2 rectangular structures are cut before fixation, to enable the immediate shortening of the anteroposterior (AP) diameter of the skull. Finally, we put a mesh plate (SonicWeld Rx, KLS Martin Group, Tuttlingen, Baden-Wuerttemberg, Germany) over the superior sagittal sinus (SSS), which is fixed anteriorly and posteriorly with pins (SonicPins Rx, KLS Martin Group). This procedure enables an immediate reduction of the AP diameter of the skull, with no further therapies needed, and promotes a wide decompression and remodeling of the skull. With an experienced surgical team and an anesthesiologic protocol, we were able to perform this surgery at early ages, requiring no blood transfusions.
Flexible piezoresistive pressure sensor based on a graphene-carbon nanotube-polydimethylsiloxane composite
Authors: Wei Huifen , Li Xiangmeng , Yao Fangping , Feng Xinyu , Zhu Xijing 
Published: April 2024

Flexible sensors are used widely in wearable devices, specifically flexible piezoresistive sensors, which are common and easy to manipulate. However, fabricating such sensors is expensive and complex, so proposed here is a simple fabrication approach involving a sensor containing microstructures replicated from a sandpaper template onto which polydimethylsiloxane containing a mixture of graphene and carbon nanotubes is spin coated. The surface morphologies of three versions of the sensor made using different grades of sandpaper are observed, and the corresponding pressure sensitivities and linearity and hysteresis characteristics are assessed and analyzed. The results show that the sensor made using 80-mesh sandpaper has the best sensing performance. Its sensitivity is 0.341 kPa−1 in the loading range of 0–1.6 kPa, it responds to small external loading of 100 Pa with a resistance change of 10%, its loading and unloading response times are 0.126 and 0.2 s, respectively, and its hysteresis characteristic is ∼7%, indicating that the sensor has high sensitivity, fast response, and good stability. Thus, the presented piezoresistive sensor is promising for practical applications in flexible wearable electronics.
Conduction mechanism and shallow donor defects in Nb-doped β-Ga2O3 single crystals
Authors: Sai Qinglin , Cui Huiyuan , Xia Changtai , Qi Hongji , Pan Mingyan , Ahmed A. M. , Mohamed H. F. 
Published: April 2024

Electrical properties, electronic defects, and photoluminescence (PL) of Nb-doped β-Ga2O3 crystals grown by the floating zone method have been studied in the temperature range from 10 to 350 K. The activation energies of shallow and deep traps were obtained and compared with their counterparts. The 0.25-Nb-doped Ga2O3 crystal has a metallic behavior at room temperature and a semiconducting behavior at low temperatures. This behavior was interpreted by the quantum corrections to the electrical resistivity resulting from the weak localization and Coulomb interaction. In addition, the 0.25-Nb-doped Ga2O3 crystal has a shallow donor ionization energy of 0.03 eV, indicating that it requires less energy to enable n-type conductivity. Hence, Nb is a good choice for improving the electrical conductivity of the β-Ga2O3 crystal. Three defect trap states were found at EC-0.81 eV, EC-0.49 eV, and EC-0.12 eV below the conduction band edge. The PL spectra of the undoped sample show two characteristic bands in the UV and blue regions under the excitation wavelength of 256 nm. On the other hand, in the Nb-doped β-Ga2O3 sample, a novel UV emission band with a shorter wavelength was observed.
Response particles in Mandarin conversation
Authors: Wang Wei 
Published: April 2024

Abstract
This study examines three major response particles, o/ou, en, and a in Mandarin
conversation. Using the framework of interactional linguistics, this study examines the actions implemented by these particles and
their associated prosodic patterns. It discovers that, while these three particles have shared functions, they show interactional
nuances that allow for more fine-grained actions. It also reveals that different particles tend to have a similar prosodic design
when they implement the same action. This study sheds light on the detailed workings of these particles both prosodically and
interactionally in Mandarin speakers’ everyday conversation, contributing a specific case to further cross-linguistic
comparison.
On the frequency dependence of the PDIV in twisted pair magnet wire analogy in humid air
Authors: Šefl O , Färber R , Franck C M 
Published: April 2024

Abstract
The partial discharge inception voltage (PDIV) of low-voltage induction motor turn-turn insulation analogy is investigated for variable relative humidity (RH) of the surrounding air (temperature and pressure are kept constant close to their ambient values). Three materials, perfluoralkoxy alkane, sealed and unsealed alumina (UA), are employed as the dielectric coating (insulation) of test samples. Each material’s dielectric properties change differently with RH—of these, relative permittivity is regarded as the most crucial, as it was previously proven to be, along with the coating’s thickness, the key factor in determining the PDIV in dry air conditions. To further vary the value of permittivity and thus provide larger data sets for the verification study, the frequency of the excitation voltage is also varied between 1 Hz and 50 kHz. The obtained experimental data are compared against the PDIV predictions obtained by a breakdown model based on the reduced thickness of the coating (ratio of the coating thickness to its relative permittivity). Satisfying agreement between the measured and predicted PDIV are obtained for the first two materials, whereas significant discrepancies are seen for the UA material. For this case, surface conductivity is introduced into the prediction model and much better fits to the experimental data are obtained for a suitable value of surface resistance. It is hence demonstrated that the model is able to satisfactorily predict the PDIV for three substantially different materials when the RH of the surrounding air is varied between

10

%

–

80

%

.
The type-I, III nodal ring, type-I, III quadratic nodal point, and Dirac valley phonons in 2D kagome lattices M2C3 (M = As, Bi, Cd, Hg, P, Sb, Zn)
Authors: Liu Qing-Bo , Guo Zhi-Dong , Du Fan-Fan , Feng De-Ming , Tan Xing-Yi , Yu Ziyang , Xiong Lun 
Published: April 2024

Abstract
Topological phases in kagome systems have garnered considerable interest since the introduction of the colloidal kagome lattice. Our study employs first-principle calculations and symmetry analysis to predict the existence of ideal type-I, III nodal rings (NRs), type-I, III quadratic nodal points (QNPs), and Dirac valley phonons (DVPs) in a collection of two-dimensional (2D) kagome lattices M2C3 (M = As, Bi, Cd, Hg, P, Sb, Zn). Specifically, the Dirac valley points (DVPs) can be observed at two inequivalent valleys with Berry phases of +π and

−
π

, connected by edge arcs along the zigzag and armchair directions. Additionally, the QNP is pinned at the Γ point, and two edge states emerge from its projections. Notably, these kagome lattices also exhibit ideal type-I and III nodal rings protected by time inversion and spatial inversion symmetries. Our work examines the various categories of nodal points and nodal ring phonons within the 2D kagome systems and presents a selection of ideal candidates for investigating topological phonons in bosonic systems.
Hybrid-DFT study of halide perovskites, an energy-efficient material under compressive pressure for piezoelectric applications
Authors: Celestine L , Zosiamliana R , Kima Lalrin , Chettri Bhanu , Singh Y T , Gurung Shivraj , Surajkumar Singh N , Laref A , Rai D P 
Published: April 2024

Abstract
Recent studies have reported that lead-halide perovskites are the most efficient energy-harvesting materials. Regardless of their high-output energy and structural stability, lead-based products have risk factors due to their toxicity. Therefore, lead-free perovskites that offer green energy are the expected alternatives. We have taken CsGeX3 (X = Cl, Br, and I) as lead-free halide perovskites despite knowing the low power conversion rate. Herein, we have tried to study the mechanisms of enhancement of energy-harvesting capabilities involving an interplay between structure and electronic properties. A density functional theory simulation of these materials shows a decrease in the band gaps, lattice parameters, and volumes with increasing applied pressure. We report the high piezoelectric responses and high electro-mechanical conversion rates, which are intriguing for generating electricity through mechanical stress.