bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structure and evolution of ultra-massive white dwarfs in general relativity
Authors: Althaus Leandro G. , Camisassa María E. , Torres Santiago , Battich Tiara , Córsico Alejandro H. , Rebassa-Mansergas Alberto , Raddi Roberto 
Published: September 2022

Context. Ultra-massive white dwarfs (M⋆ ≳ 1.05 M⊙) are of utmost importance in view of the role they play in type Ia supernovae explosions, merger events, the existence of high-magnetic -field white dwarfs, and the physical processes in the super asymptotic giant branch phase.
Aims. We aim to present the first set of constant rest-mass ultra-massive oxygen-neon white dwarf cooling tracks with masses of M⋆ >  1.29 M⊙ which fully take into account the effects of general relativity on their structural and evolutionary properties.
Methods. We computed the full evolution sequences of 1.29, 1.31, 1.33, 1.35, and 1.369 M⊙ white dwarfs with the La Plata stellar evolution code, LPCODE. For this work, the standard equations of stellar structure and evolution have been modified to include the effects of general relativity. Specifically, the fully general relativistic partial differential equations governing the evolution of a spherically symmetric star are solved in a way so that they resemble the standard Newtonian equations of stellar structure. For comparison purposes, the same sequences have been computed for the Newtonian case.
Results. According to our calculations, the evolutionary properties of the most massive white dwarfs are strongly modified by general relativity effects. In particular, the resulting stellar radius is markedly smaller in the general relativistic case, being up to 25% smaller than predicted by the Newtonian treatment for the more massive ones. We find that oxygen-neon white dwarfs more massive than 1.369 M⊙ become gravitationally unstable with respect to general relativity effects. When core chemical distribution due to phase separation on crystallization is considered, such instability occurs at somewhat lower stellar masses, ≳1.36 M⊙. In addition, cooling times for the most massive white dwarf sequences are about a factor of two smaller than in the Newtonian case at advanced stages of evolution. Finally, a sample of white dwarfs have been identified as ideal candidates to test these general relativistic effects.
Conclusions. We conclude that the general relativity effects should be taken into account for an accurate assessment of the structural and evolutionary properties of the most massive white dwarfs. These new ultra-massive white dwarf models constitute a considerable improvement over those computed in the framework of the standard Newtonian theory of stellar interiors.
Rectovaginal Fistula Management in Low-Resource Settings
Authors: Lussiez Alisha , Nardos Rahel , Lowry Ann 
Published: September 2022

AbstractRectovaginal fistula (RVF) is an abnormal connection between the rectum and vagina that affects women globally. In low- and middle-income countries (LMIC), RVF is most commonly due to obstetric complications such as prolonged labor or perineal tears, female genital mutilation and trauma such as sexual violence or iatrogenic surgical injuries. Women affected by this condition suffer from debilitating physical symptoms, social isolation, economic disempowerment, psychological trauma, low self-esteem, and loss of role fulfillment. Lack of accessible, high-quality, and effective healthcare is a major barrier to timely and safe obstetric care and to care for subsequent complications such as RVF. Additionally, social, cultural, financial, and systemic barriers put women at risk of acquiring fistula and contribute to delays in seeking and receiving care. Literature evaluating RVF repair in those able to access care offers limited information about management and outcomes. It is difficult to ascertain which surgical techniques are used. To reduce the burden of this often-preventable disease, appropriate investment in healthcare infrastructure to strengthen maternal care in LMICs is paramount. Furthermore, more standardized reporting of severity and treatment approach along with outcome data are critical to improving the quality of care for patients impacted by RVF.
Successful Resolution of Refractory Post-tubercular Ileocecal Stricture by Lumen Apposing Metal Stent
Authors: Rana Surinder S. , Gupta Rajesh 
Published: September 2022

AbstractTuberculosis is one of the common causes of benign small bowel obstruction and endoscopic management mainly relies on serial balloon dilatation. In this report, we describe a 35 year male with refractory post-tubercular ileal stricture that was successfully treated with a lumen apposing metal stent
A Simulation Study to Investigate the Usefulness of a Novel Stricture Tool for Training Wire Guided Balloon Dilation
Authors: Bhat Balekuduru Avinash , Sahu Manoj K. 
Published: September 2022

Abstract
Background and Aims The training in esophageal stricture dilation is difficult to obtain and have few simulation models. The aim of the study was to evaluate a novel stricture simulation for training a wire-guided, controlled radial expansile (CRE) balloon dilation.
Methods The study was a pretest–posttest design without a control group involving a novel simulation device for esophageal stricture. The training session involved 12 final year gastroenterology fellows from five different centers. The trainees received 2 hours of education sessions featuring didactic content, a live demonstration of step-by-step demonstration of wire-guided CRE balloon dilation and a study material on the procedure. The simulation device used was a single-use hose pipe along with a red color nonhardening modeling clay with a 5.0-to-8.0-mm hole in the center.
Results All the trainees and instructor uniformly rated the model as excellent or good with simulation device being mild stiffer in haptics than of the real tissue. The mean (%) pretest scores of 39 (21.6%) improved significantly to 160 (88.8%) in mean (%) posttest questionnaire (p < 0.05). There was a significant improvement in the questionnaire of the dilation procedure after the simulation training episode.
Conclusion The novel stricture simulation model had good performance evaluation and can be used to train CRE balloon dilation procedure.
Benign Anorectal Disorder Management in Low-Resource Settings
Authors: Oliveira Lucia , Galindo Gonzalo Federico Hagerman Ruiz , Silva-Velazco Jorge Daniel 
Published: September 2022

AbstractThere are many benign anorectal disorders, which can make patients seek care. In low-resource settings, the incidence of those pathologies is not different from the industrialized and western world. However, an interesting difference colorectal surgeons and gastroenterologists can face is the fact that many patients do not seek help or are not aware and have little opportunities to be helped. Latin America population is estimated to be around 8% of the world population, with Brazil having the largest percentage. Infectious diseases, which were previously under control or were steadily declining, have emerged. For example, we have seen resurgence of dengue, malaria, and syphilis in pregnancy, as well as other sexually transmitted diseases that can affect the anorectal region. In this article, we will address the most common benign anorectal disorders.
Simulation of the CO2 hydrate–water interfacial energy: The mold integration–guest methodology
Authors: Zerón Iván M. , Míguez José Manuel , Mendiboure Bruno , Algaba Jesús , Blas Felipe J. 
Published: September 2022

The growth pattern and nucleation rate of carbon dioxide hydrate critically depend on the precise value of the hydrate–water interfacial free energy. There exist in the literature only two independent experimental measurements of this thermodynamic magnitude: one obtained by Uchida et al. [J. Phys. Chem. B 106, 8202 (2002)], 28(6) mJ/m2, and the other by Anderson and co-workers [J. Phys. Chem. B 107, 3507 (2003)], 30(3) mJ/m2. Recently, Algaba et al. [J. Colloid Interface Sci. 623, 354 (2022)] have extended the mold integration method proposed by Espinosa and co-workers [J. Chem. Phys. 141, 134709 (2014)] to deal with the CO2 hydrate–water interfacial free energy (mold integration–guest or MI-H). Computer simulations predict a value of 29(2) mJ/m2, in excellent agreement with experimental data. The method is based on the use of a mold of attractive wells located at the crystallographic positions of the oxygen atoms of water molecules in equilibrium hydrate structures to induce the formation of a thin hydrate slab in the liquid phase at coexistence conditions. We propose here a new implementation of the mold integration technique using a mold of attractive wells located now at the crystallographic positions of the carbon atoms of the CO2 molecules in the equilibrium hydrate structure. We find that the new mold integration–guest methodology, which does not introduce positional or orientational information of the water molecules in the hydrate phase, is able to induce the formation of CO2 hydrates in an efficient way. More importantly, this new version of the method predicts a CO2 hydrate–water interfacial energy value of 30(2) mJ/m2, in excellent agreement with experimental data, which is also fully consistent with the results obtained using the previous methodology.
Texto escolar y comprensión
Authors: Ibáñez Romualdo , Moncada Fernando , Cárcamo Benjamín 
Published: September 2022

ResumenEl presente estudio tuvo dos objetivos. El primero fue determinar el efecto de la subjetividad y de la explicitud de las relaciones de coherencia causal en el procesamiento y en la comprensión de estudiantes chilenos de educación básica. El segundo fue determinar si tal efecto varía dependiendo del nivel socioeconómico (NSE). Para ello, se implementó un experimento de lectura autocontrolada con ventana cumulativa en el que participaron estudiantes de educación básica provenientes de colegios públicos (NSE bajo) y privados (NSE alto) chilenos. Los datos revelaron un bajo nivel general en comprensión, el que incluso es más bajo en estudiantes con NSE bajo. También se observó que el efecto de la subjetividad de la relación es mayor que el de su explicitud. En cuanto a la diferencia entre colegios, se observó que los estudiantes con NSE alto presentan mejores resultados al procesar y comprender las relaciones subjetivas en comparación con relaciones objetivas.
Universal quantifiers, focus, and grammatical relations in Besemah
Authors: McDonnell Bradley 
Published: September 2022

Abstract
This article describes adverbial universal quantification in Besemah, a little-described Malayic language of
southwest Sumatra, and how the syntactic position of the quantifier relates to grammatical relations and information structure.
Given previous descriptions of the relationship between quantifiers and grammatical relations, especially in western Austronesian
languages (e.g., Kroeger 1993; Musgrave
2001), Besemah presents a unique system of universal quantification wherein adverbial universal quantifiers place severe
restrictions on which arguments can be quantified. I argue that these restrictions are fundamentally different than those
described as ‘quantifier float’ in other languages, but they are not incidental. Instead, these restrictions can be explained by
the fact that the adverbial universal quantifier also marks focus in Besemah.
Oculo-auriculo-vertebral spectrum and maternal drug ingestion
Authors: Costa Joana Raquel , Coutinho Miguel Bebiano , Soares Teresa , Meireles Luís 
Published: September 2022

Introduction
Oculo-auriculo-vertebral spectrum (OAVS) is aetiologically/pathogenetically a heterogeneous disorder. This study focuses on investigating of maternal drug intake during pregnancy in OAVS cases.

Materials and methods
Our sample was composed of 114 paediatric cases of OAVS. For each patient, an evaluation form seeking identity, medical history, pregnancy and family data, physical/dysmorphological findings and results from complementary tests was applied. Through the analysis of all the forms applied, the history of drug exposure/maternal diseases were retrospectively studied.

Results
The age of the population studied ranged between 1 month and 18 years, the majority being male. Regarding otological features, most had pinna involvement: microtia (86.6%); preauricular appendices (41.6%) and preauricular sinus (15.7%). External auditory canal atresia/stenosis was observed in 61.0% of the cases. Most had conductive hearing loss (75.5%) and imaging study revealed middle/inner ear malformations in 21.1% of the cases. Regarding nonotological characteristics, ophthalmological, osteoarticular and cardiac involvement were the 3 most frequently observed. Most cases had no evident cause for the development of anomalies (68.4%). However, in 16.7% a positive family history was identified. A history of drug intake has been elicited in 14.9% of the participants. The drugs intake during pregnancy found in our study were: isotretinoin, fluoxetine, oral contraceptives, levothyroxine, domperidone, enalapril, acyclovir and pseudoephedrine/triprolidine and gestational diabetes in need of treatment.

Conclusion
Some drugs are unquestionably associated with the development of malformation, such as isotretinoin, however, the other drugs cannot be underestimated, since their synergistic effect with other environmental agents and genetic background may be in the origin of OAVS.
Investigation of two-dimensional HfS2/PtSSe heterostructure with strong visible light adsorption and strain tunable bandgap
Authors: Cao Yong , Zhu Xue Ting , Zou Dai Feng , Sheng Wei , Xu Ying 
Published: September 2022

Abstract
Based on the first-principles calculation, the electronic structure of HfS2/PtSSe heterojunction is systematically studied. The HfS2/PtSSe heterostructure has an intrinsic type-II band alignment, with holes and electrons located at HfS2 and PtSSe, respectively. The charge distribution is well separated, which can effectively prevent carrier recombination. Compared to the isolated PtSSe and HfS2 monolayers, the light absorption of the HfS2/PtSSe heterojunction in both visible and ultraviolet regions is significantly enhanced. Furthermore, the bandgap of the heterojunction can be tuned linearly by the bi-axial strain. Especially, the heterojunction can switch from type-II to type-III band alignment at compress strain strength of −9%. The variation of the bandgap of the heterojunction is related to the increased hybridization of Hf-5d and Se-4p states under compressed strain. The adjustable bandgap indicates that the HfS2/PtSSe heterojunction is a promising high-performance adjustable optoelectronic nanodevice candidate.
A bipolar charge transport model to simulate the impact of nanometric scale processes on the space charge behaviour in polyethylene
Authors: Le Roy S , Hoang M Q 
Published: September 2022

Abstract
Predicting the electric field distribution in polymers used as electrical insulating materials remains the Holy Grail, as the presence of charges disturbs the Laplacian electric field. Charges arising from the electrodes are one of the dominant mechanisms of charge generation, particularly in polyethylene-based materials. Hence, the nanometric scale processes at play at the interface exert a non-negligible impact on charge injection. In this study, a bipolar charge transport model developed in 2D is used to simulate the effects of several nanometric scale processes, such as the variation of the barrier height linked to the chemical structure of the material at the interface and surface roughness. Simulation results with regard to the net charge density. current and the recombination rate will be compared to the case where no specific supplementary hypothesis is set at the electrodes. Finally, simulations are performed for a combination of roughness and barrier height variations along the electrodes.
Thermally driven single-electron stochastic resonance
Authors: Kasai Seiya 
Published: September 2022

Abstract
Stochastic resonance (SR) in a single-electron system is expected to allow information to be correctly carried and processed by single electrons in the presence of thermal fluctuations. Here, we comprehensively study thermally driven single-electron SR. The response of the system to a weak voltage signal is formulated by considering the single-electron tunneling rate, instead of the Kramers’ rate generally used in conventional SR models. The model indicates that the response of the system is maximized at finite temperature and that the peak position is determined by the charging energy. This model quantitatively reproduces the results of a single-electron device simulator. Single-electron SR is also demonstrated using a GaAs-based single-electron system that integrates a quantum dot and a high-sensitivity charge detector. The developed model will contribute to our understanding of single-electron SR and will facilitate accurate prediction, design, and control of single-electron systems.
The Mayo Clinic Florida microdosimetric kinetic model of clonogenic survival: formalism and first benchmark against in vitro and in silico data
Authors: Parisi Alessio , Beltran Chris J. , Furutani Keith M. 
Published: September 2022

Abstract

Objective. To develop a new model (Mayo Clinic Florida microdosimetric kinetic model, MCF MKM) capable of accurately describing the in vitro clonogenic survival at low and high linear energy transfer (LET) using single-event microdosimetric spectra in a single target. Methodology. The MCF MKM is based on the ‘post-processing average’ implementation of the non-Poisson microdosimetric kinetic model and includes a novel expression to compute the particle-specific quadratic-dependence of the cell survival with respect to dose (β of the linear-quadratic model). A new methodology to a priori calculate the mean radius of the MCF MKM subnuclear domains is also introduced. Lineal energy spectra were simulated with the Particle and Heavy Ion Transport code System (PHITS) for 1H, 4He, 12C, 20Ne, 40Ar, 56Fe, and 132Xe ions and used in combination with the MCF MKM to calculate the ion-specific LET-dependence of the relative biological effectiveness (RBE) for Chinese hamster lung fibroblasts (V79 cell line) and human salivary gland tumor cells (HSG cell line). The results were compared with in vitro data from the Particle Irradiation Data Ensemble (PIDE) and in silico results of different models. The possibility of performing experiment-specific predictions to explain the scatter in the in vitro RBE data was also investigated. Finally, a sensitivity analysis on the model parameters is also included. Main results. The RBE values predicted with the MCF MKM were found to be in good agreement with the in vitro data for all tested conditions. Though all MCF MKM model parameters were determined a priori, the accuracy of the MCF MKM was found to be comparable or superior to that of other models. The model parameters determined a priori were in good agreement with the ones obtained by fitting all available in vitro data. Significance. The MCF MKM will be considered for implementation in cancer radiotherapy treatment planning with accelerated ions.
Inter-correlation between Sunspot Oscillations and Their Internal Structures
Authors: Fu Libo , Zhu Zizhan , Yuan Ding , Wang Jiaoyang , Feng Song , Anfinogentov Sergey 
Published: September 2022

Abstract
Three- and five-minute oscillations are commonly observed in any sunspot. Because they are modulated by the internal thermal and magnetic structures of a sunspot, they could be used as an effective tool for researching sunspot seismology. In this paper, we investigate the properties of oscillations in sunspot groups with varying sizes and magnetic fields, and aim to establish the relationships between sunspot oscillations and its internal structure comparatively. We selected three groups of the unipolar sunspot with approximately axial-symmetric magnetic field and calculated their Fourier spectra based on the ultraviolet/extreme ultraviolet emission intensity variations recorded by the Solar Dynamics Observatory/Atmospheric Imaging Assembly. We found that the distribution of three-minute oscillation is defined by the joint effect of diverging magnetic field and the stratification of the sunspot atmosphere. Its distribution could be modified by any invading magnetic structures in the umbra. In contrast, the five-minute oscillations are more prominent in small spots, implying that five-minute oscillation is very closely connected with umbral dynamics.
Tracklet-to-object Matching for Climbing Starlink Satellites through Recursive Orbit Determination and Prediction
Authors: Li Bin , Liu Lei , Sang Ji-Zhang 
Published: September 2022

Abstract
Concerns for the collision risk involving Starlink satellites have motivated the interest in obtaining their accurate orbit knowledge. However, accurate orbit determination (OD) and prediction (OP) of Starlink satellites confront two main challenges: mismatching or missed matching of sparse tracklets to maneuvering satellites, and unknown or unmodeled orbit maneuvers. How to exactly associate a tracklet to the right satellite is the primary issue, since a maneuvering satellite does not follow the naturally evolving orbit during the maneuvering, while more tracklets are needed for developing an accurate orbit maneuver model. If these two challenges are not well addressed, it may lead to catalog maintenance failure or even loss of objects. This paper proposes a method to correctly match tracklets to the climbing Starlink satellites. It is based on the recursive OD and OP, in which the orbit maneuver is modeled and the thrust is estimated, such that the subsequent OP accuracy guarantees the correct match of tracklets shortly after the OD time. Experiments with climbing Starlink satellites demonstrate that the tracklets within three days of the last TLE (two-line element) are all correctly matched to the right satellites. With the matched tracklets, the thrust accelerations of climbing Starlink satellites can be precisely estimated through an orbit control approach, and the position prediction accuracy over 48 hours is at the level of a few kilometers, providing accurate orbit knowledge for reliable collision warning involving Starlink satellites.
Analysis And Evaluation Of Consumers’ Cognitive Responses To Visual And Gustatory Stimuli For Neuromarketing Application
Authors: Sameeha M , Subhiksha M , Arivudaiyanambi Janani 
Published: September 2022

Abstract
Neuromarketing merges viewpoints of marketing, neuroscience, economics, choice hypothesis that are required to analyze the psychology of consumers’ preference to product development. The traditional methods involve product ratings, conducting questionnaire surveys that stumble upon verbal declarations provided by the vendees. Consumer Neuroscience describes the emotional, cognitive aspects that form the base of human decision making. Our study aims to utilize the neuroscientific information that distinguishes contrasts between healthy subjects’ EEG signals for examining the brain activity during visual and gustatory stimuli of different flavours of a beverage brand. The EEG montage assigned according to brain-region-specific localization draws out the subjects’ true elicited subconscious response regardless of whether the subject attempts to control his/her affective state. The results showed the activation of theta and delta bands of EEG signals during the given stimuli. These elicited signal variations can be used to identify the best favoured item for successful product dispatch and reduction in loss. Another major application is directed towards the customization of liquid food intake of locked-in, comatose, vegetative state patients by observing their brain response to the various fluid intake and determining the best response among them. This aids physicians to put the patients on a path to recovery.