bluuebunny/crossref_metadata_2025_split huggingface dataset:
The impact of radiative levitation on mode excitation of main-sequence B-type pulsators
Authors: Rehm Rebecca , Mombarg Joey S. G. , Aerts Conny , Michielsen Mathias , Burssens Siemen , Townsend Richard H. D. 
Published: May 2024

Context. Numerical computations of stellar oscillations for models representative of B-type stars predict fewer modes to be excited than observations reveal from modern space-based photometric data. One shortcoming of state-of-the-art evolution models of B-type stars that may cause a lack of excited modes is the absence of microscopic diffusion in most such models.
Aims. We investigate whether the inclusion of microscopic diffusion in stellar models of B-type stars, notably radiative levitation experienced by isotopes, leads to extra mode driving by the opacity mechanism compared to the case of models that do not include microscopic diffusion.
Methods. We consider the case of slowly to moderately rotating stars and use non-rotating equilibrium models, while we account for (uniform) rotation in the computations of the pulsation frequencies. We calculate 1D stellar structure and evolution models with and without microscopic diffusion and examine the effect of radiative levitation on mode excitation, for both low-radial order pressure and gravity modes and for high-radial order gravity modes. As is common practice in asteroseismology, rotation is included in the pulsation computations according to the mode’s frequency regime. For modes having frequencies below twice the rotation frequency, that is, modes in the sub-inertial regime, we adopt the traditional approximation of rotation. For modes in the super-inertial regime with frequency above twice the rotation frequency, rotation is treated perturbatively up to first order in the rotation. We consider macroscopic envelope mixing induced by internal gravity waves to compute the modes and study its effect on the surface abundances.
Results. We find systematically more modes to be excited for the stellar models including microscopic diffusion compared to those without it, in agreement with observational findings of pulsating B-type dwarfs. Furthermore, the models with microscopic diffusion predict that excited modes occur earlier on in the evolution compared to modes without it. In order to maintain realistic surface abundances during the main sequence, we include macroscopic envelope mixing by internal gravity waves. Along with microscopic diffusion, such macroscopic envelope mixing ensures both more excited modes and surface abundances consistent with spectroscopic studies of B-type stars.
Conclusions. While radiative levitation has so far largely been neglected in stellar evolution computations of B-type stars for computational convenience, it impacts mode excitation predictions for stellar models of such stars. We conclude that the process of radiative levitation is able to reduce the discrepancy between predicted and observed excited pulsation modes in B-type stars.
Erythema multiforme verursacht durch SARS-CoV-2-Infektion
Authors: Wulf Maria Carola , Schwarz Thomas , Heine Guido 
Published: May 2024

ZusammenfassungIm Rahmen der COVID-19-Pandemie wurden verschiedene kutane Manifestationen der Infektion mit SARS-CoV-2 beschrieben. Erythema multiforme wird häufig durch Virusinfektionen ausgelöst und es konnten mehrere Fälle beschrieben werden, bei denen es im Rahmen einer SARS-CoV-2-Infektion zu einem Erythema multiforme vom Major-Typ kam.Drei Patienten (Tab. 1) entwickelten während oder kurz nach einer SARS-CoV-2-Infektion Hautveränderungen, die
klinisch zu einem Erythema multiforme passend waren. Die Histologie bestätigte dies und andere
infektiologische Ursachen wurden mittels Serologie (Tab. 2) ausgeschlossen. Die hier beschriebenen Fälle weisen darauf hin, dass ein Erythema
multiforme, neben bereits bekannten Viren, durch die Infektion mit SARS-CoV-2 ausgelöst werden
kann.
Transarterial microembolization for the management of refractory chronic joint pain in osteoarthritis
Authors: Wilms Lena Marie , Jannusch Kai , Weiss Daniel , Steinfort Nilcolas , Ziayee Farid , Antoch Gerald , Minko Peter 
Published: May 2024

AbstractOsteoarthritis (OA) is a chronic degenerative disease significantly impacting both patient quality of life and socioeconomics. Traditional treatment options, including pharmacological and surgical interventions, are often limited. Advancements in our understanding of the pathological mechanisms behind OA indicate the involvement of pathological angiogenesis. Transarterial microembolization (TAME), a minimally invasive radiological procedure, may present an innovative therapeutic approach. This review aims to consolidate current knowledge and experiences regarding TAME as a therapeutic modality for alleviating chronic joint pain associated with OA. It explores the role of TAME, focusing on its indications, patient selection, clinical outcomes, and future perspectives. Potential complications and associated risks are systematically addressed, alongside proposed strategies for risk mitigation and effective management.The presented patient cases originate from our institution, supplemented by a thorough review of relevant literature retrieved from PubMed.TAME represents a promising therapeutic approach, providing relief from the burden of joint diseases and substantially enhancing patient quality of life. Clinical outcomes emphasize the efficacy and safety of TAME in mitigating pain and improving functional capabilities in patients with chronic joint pain associated with OA. With mounting evidence of its therapeutic benefits and applicability to numerous joint-related pathologies, TAME offers a valuable addition to the arsenal of treatments for these conditions.
Impact of linked color imaging on the proximal adenoma miss rate: a multicenter tandem randomized controlled trial (the COCORICO trial)
Authors: Karsenti David , Perrod Guillaume , Perrot Bastien , Quénéhervé Lucille , Chabrun Edouard , Koch Stéphane , Vanbiervliet Geoffroy , Rahmi Gabriel , Velut Guillaume , Moreno-Garcia Maira , Cavicchi Maryan , Dray Xavier 
Published: May 2024

Abstract
Background Missed lesions are common during standard colonoscopy and are correlated with post-colonoscopy colorectal cancer. Contrast-enhanced technologies have recently been developed to improve polyp detection. We aimed to evaluate the impact of linked color imaging (LCI) on the proximal adenoma miss rate in routine colonoscopy.
Methods This national, multicenter, tandem, randomized trial compared the outcomes of colonoscopy with white-light imaging (WLI) versus LCI for polyp detection in the right colon. Two consecutive examinations of the right colon (upstream of the hepatic flexure) were made with WLI and LCI by the same operator. First-pass examination by WLI or LCI was randomized 1:1 after cecal intubation. According to statistical calculations, 10 endoscopy units had to include approximately 700 patients. The primary outcome was proximal adenoma miss rate. Secondary outcomes were the proximal miss rates for sessile serrated lesions (SSL), advanced adenomas, and polyps.
Results 764 patients were included from 1 January 2020 to 22 December 2022, and 686 patients were randomized (345 WLI first vs. 341 LCI first). Both groups were comparable in terms of demographics and indications. The proximal adenoma miss rate was not significantly higher in the WLI-first group (36.7%) vs. the LCI-first group (31.8%) (estimated mean absolute difference: 4.9% [95%CI –5.2% to 15.0%], P = 0.34). There was also no significant difference in miss rates for SSLs, advanced adenomas, and polyps in the proximal colon.
Conclusions In contrast to previous data, this study does not support the benefit of LCI to the proximal adenoma miss rate in routine colonoscopy.
Clinical and Radiological Response Following Single-Session Gamma Knife Radiosurgery in Cavernous Sinus Hemangiomas
Authors: Kalgudi Ananda , Goyal-Honavar Abhijit , Sadashiva Nishanth , MP Kaviyarasan , Nadeem Mohammed , Konar Subhas , Prabhuraj Andiperumal Raj , Vazhayil Vikas , Arimappamagan Arivazhagan , Balukrishnan Jeeva , Natesan Ponnusamy 
Published: May 2024

Abstract
Purpose Cavernous sinus hemangiomas (CSH) represent 2 to 3% of lesions occupying the cavernous sinus. The optimal management strategy for CSH is not established, with microsurgical resection and radiosurgery employed alone or in combination. Therefore, we aimed to analyze the efficacy and safety of gamma knife radiosurgery (GKRS) for CSH in a cohort of primary and residual CSH.
Methods A retrospective analysis of 33 patients (26 primary and 7 residual CSH) that underwent single-session GKRS between 2012 and 2021 for CSH was performed. Demographic, clinical, radiological, and follow-up data were acquired, and clinicoradiological response following GKRS was assessed.
Results The mean age of the cohort was 43 ± 13.5 years (range, 10–77). There were 9 males (27.3%) and 24 females (72.7%). The median lesion volume was 6.9 cc, ranging from 1.46 to 19.06 cc. The mean dose administered to the tumor margin was 13.50 ± 1.5 Gy (range, 12 to 15 Gy). The median duration of clinical follow-up was 41 months, over which period the mean reduction in tumor volume was 87.6%. Complete response, defined as absence of tumor on follow-up imaging, occurred in 23 patients (69.7%). Twenty-three patients (69.7%) showed clinical improvement following GKRS. There were no radiation-induced complications.
Conclusion CSH have a distinct radiological appearance and a predictable response to radiosurgery. When used primarily in radiologically diagnosed CSH and as adjunctive therapy supplementing a subtotal excision, GKRS produces a high rate of volume reduction with the improvement of neurological function and minimal cranial nerve morbidity. Therefore, GKRS presents a viable alternative to surgery without the morbidity associated with surgical resection.
Endoscopic resection in subepithelial lesions of the upper gastrointestinal tract: Experience at a tertiary referral hospital in The Netherlands
Authors: Verloop Cynthia , Hol Lieke , Bruno Marco , Van Driel Lydi , Koch Arjun Dave 
Published: May 2024

Abstract
Background and study aims Histological confirmation of subepithelial lesions (SELs) in the upper gastrointestinal tract remains challenging. Endoscopic resection of SELs is increasingly used for its excellent diagnostic yield and opportunity to do away with continued surveillance. In this study, we aimed to evaluate the indications, success rates and complications of different endoscopic resection techniques for SELs at a large, tertiary referral hospital in Rotterdam, The Netherlands.
Patients and methods Data between October 2013 and December 2021 were retrospectively collected and analyzed. Main outcomes were R0-resection rate, en bloc resection rate, recurrence rate, and procedure-related adverse events (AEs) (Clavien-Dindo). Secondary outcomes were procedure time, need for surgical intervention, and clinical impact on patient management.
Results A total of 58 patients were referred for endoscopic resection of upper gastrointestinal SELs. The median diameter of lesions was 20 mm (range 7–100 mm). Median follow-up time was 5 months (range 0.4–75.7). Forty-eight procedures (83%) were completed successfully leading to en bloc resection in 85% and R0-resection in 63%. Procedure-related AEs occurred in six patients (13%). Severe complications (CD grade 3a) were seen in three patients. The local recurrence rate for (pre)malignant diagnosis was 2%. Additional surgical intervention was needed in seven patients (15%). A total of 32 patients (67%) could be discharged from further surveillance after endoscopic resection.
Conclusions Endoscopic resection is a safe and effective treatment for SELs and offers valuable information about undetermined SELs for which repeated sampling attempts have failed to provide adequate tissue for diagnosis.
Rest-fMRI—A Potential Substitute for Task-fMRI?
Authors: Gupta Santosh S. , Sriram Rithika , Mulani Smruti 
Published: May 2024

Abstract
Objective The aim of this study was to assess the reliability of resting-state functional magnetic resonance imaging (rest-fMRI) in mapping language areas for preoperative planning, versus standard task-based techniques, which are at times difficult to perform in clinical settings. Our study also aimed to evaluate the overlap between language areas identified through rest-fMRI and the standard task-fMRI, in neurosurgical cases.
Materials and Methods Using a seed-based analysis of rest-fMRI with multiple template seeds, we identified functionally connected language regions in patients undergoing preoperative language mapping. Four language task paradigms (word, verb, picture, and semantics) were evaluated. We quantified the degree of overlap between language areas identified on rest-fMRI and task-fMRI, categorizing the results as more than 50% or less than 50% overlap.
Results Seventy-seven percent of patients demonstrated an overlap exceeding 50% between rest- and task-fMRI maps, with the left Broca's area being the most frequently observed region of overlap. This finding was noted even in cases with lesions in Broca's or Wernicke's areas, highlighting the method's robustness. The verb task showed the best blood-oxygen-level dependent activity and overlap with rest-fMRI, highlighting its reliability. To identify a specific language area, the contralateral seed of the same area most commonly displayed connectivity with the area of interest.
Conclusion Our findings demonstrate the potential of using rest-fMRI in accurately mapping eloquent language areas, in clinical settings The strong concordance observed, especially in the left Broca's area, underscores the reliability of this method. Further research and larger studies are essential to validate these results, potentially establishing the use of routine rest-fMRI, in clinical preoperative workup.
At the Origin of Brain Malformations: Embryology of the Central and Peripheral Nervous System
Authors: Cavallaro Paola , Leotta Michela , La Cognata Daria , Dierna Federica , Fichera Valeria , Vecchio Michele , Polizzi Agata , Praticò Andrea D. , Spatuzza Michela , Castrogiovanni Paola , Musumeci Giuseppe , Rosa Michelino Di , Imbesi Rossella 
Published: May 2024

AbstractDevelopment of the central nervous system is a time-ordered and multistepped process that begins in the third week of development and continues after birth. Understanding of its normal embryologic development is fundamental to understand how specific malformations develop. This article provides a summary of human brain development and serves as a base to introduce the various malformations presented in this issue.
Bilateral Dolichoarteriopathies of the Internal Carotid Artery: Surgical Treatment and Results
Authors: Dogalbayev Yerbol , Fursov Alexandr , Sultanaliev Tokan , Sagandykov Irlan , Suleimenov Serik , Fursov Roman , Ilbekova Kuralay 
Published: May 2024

AbstractThe approach to surgical treatment of symptomatic bilateral dolichoarteriopathies of the internal carotid artery (DICA) remains an unresolved problem today. The aim of this article is to compare the methods of reconstruction of the stage-by-stage surgical treatment of bilateral DICA, depending on the type of deformity. The study included 30 patients with clinical manifestations of cerebrovascular insufficiency (CVI), who were found to have hemodynamically significant bilateral DICA. The patients underwent stage-by-stage operations on both sides, resulting in a total of 60 reconstructive operations on the carotid arteries. Based on the type of reconstruction, the patients were divided into three groups. All three groups showed positive dynamics with relief of the CVI clinical symptoms (p = 0.01), except for patients with persistent residual effects after strokes. Hemodynamic indices in the ICA also normalized after surgery; the linear velocity of blood flow decreased to 0.842 ± 0.087 m/s (p = 0.01) in the first group, 0.825 ± 0.057 m/s (p = 0.01) in the second group, and 0.805 ± 0.083 m/s (p = 0.01) in the third group. The results of the treatment of bilateral DICA showed that with a correctly selected approach to stage-by-stage surgical treatment, it is possible to achieve restoration of blood flow along the internal carotid artery with regression of general cerebral symptoms.
The influence of rural tourism landscape perception on tourists’ revisit intentions—a case study in Nangou village, China
Authors: Kou Yuxiao , Xue Xiaojie 
Published: May 2024

AbstractRural tourism development has an important impact on optimizing the rural industrial structure and stimulating local economic growth. China’s Rural Revitalization Strategy has promoted the development of rural tourism nationwide and emphasized Chinese characteristics in the process of local development. Based on the theoretical analysis of landscape perception, this article uses the external Landscape Perception→Satisfaction→Revisit Intention influence path as a theoretical research framework to construct a structural equation model to analyze the willingness of tourists to revisit rural tourism destinations. We selected Nangou Village, Yan’an City, Shaanxi Province, as a key model village for rural revitalization, and conducted an empirical analysis. The empirical analysis results show that landscape perception has a significant positive impact on satisfaction and revisit intention. Tourist satisfaction has a significant positive impact on revisit intention and plays an intermediary role between landscape perception and revisit intention. The five dimensions of natural ecology, historical culture, leisure recreation, research experience, and integral route under landscape perception are all significantly positively correlated with revisit intention, with historical culture and integral route having the greatest impact on landscape perception. The survey about Nangou Village verifies the relationship between landscape perception, satisfaction, and tourists’ revisit intention. Based on the objective data analysis results, this study puts forward suggestions for optimizing Nangou Village’s tourism landscapes and improving tourists’ willingness to revisit from three aspects: deeply excavating rural historical and cultural resources, shaping the national red culture brand, and creating rural tourism boutique routes. It is hoped that the quantitative research method of landscape perception theory in Nangou Village can also provide a reference and inspiration for similar rural tourism planning.
Giant impurity effect on anomalous Hall effect of Mn3Sn
Authors: Yano Rikizo , Kihara Shunya , Yoneda Masayasu , Vu Huyen Thi Ngoc , Suto Hiroyuki , Katayama Naoyuki , Yamaguchi Takeo , Kuwahara Makoto , Suzuki Michi-To , Saitoh Koh , Kashiwaya Satoshi 
Published: May 2024

Mn3Sn is an anomalous Hall effect (AHE) antiferromagnet that exhibits the hysteretic AHE in antiferromagnetic (AFM) phase at room temperature. We report that whisker Mn3Sn crystals grown by the flux method exhibit a non-hysteretic AHE at mid-to-low temperatures when the whisker Mn3Sn is surrounded by a thin layer of ferromagnetic Mn2−xSn. These crystals exhibit a hysteretic AHE above 275 K due to the spin alignment of the inverse triangular lattice, which is similar to other crystals. However, upon cooling the crystal, it exhibits a non-hysteretic AHE with a spiral AFM spin structure at 100–200 K. We concluded that the non-hysteretic AHE is induced at the interface of Mn2−xSn/Mn3Sn. We believe that the scalar-spin chirality in the spiral AFM phase of Mn3Sn, modulated by Mn2−xSn through the magnetic proximity effect, produces the AHE. This discovery opens a new avenue for tailoring the AHE by magnetic layers.
Chip-scale all-optical complex-valued matrix inverter
Authors: Liu Xinyu , Cheng Junwei , Zhou Hailong , Dong Jianji , Zhang Xinliang 
Published: May 2024

Matrix inversion is a fundamental and widely utilized linear algebraic operation but computationally expensive in digital-clock-based platforms. Optical computing is a new computing paradigm with high speed and energy efficiency, and the computation can be realized through light propagation. However, there is a scarcity of experimentally implemented matrix inverters that exhibit both high integration density and the capability to perform complex-valued operations in existing optical systems. For the first time, we experimentally demonstrated an iterative all-optical chip-scale processor to perform the computation of complex-valued matrix inversion using the Richardson method. Our chip-scale processor achieves an iteration speed of 10 GHz, which can facilitate ultra-fast matrix inversion with the assistance of high-speed Mach–Zehnder interferometer modulators. The convergence can be attained within 20 iterations, yielding an accuracy of 90%. The proposed chip-scale all-optical complex-valued matrix inverter represents a distinctive innovation in the field of all-optical recursive systems, offering significant potential for solving computationally intensive mathematical problems.
The surface temperatures of flat areas on the Moon
Authors: Zhang Dan , Zheng Wenchao 
Published: May 2024

Lunar surface temperature (LST) is a quantity of special interest for interpreting the thermal character of the regolith. It is affected by the solar irradiance, earthshine, and heat flow for the flat areas on the Moon. We present an improved transient temperature model to calculate temperatures of lunar flat surfaces. The model consists of one-dimensional thermal diffusion equation and two boundary conditions. The improved lunar surface boundary condition allows one to precisely determine the effective solar irradiance (ESI) and earthshine. The simulated surface temperatures suggest consistency with the measured temperatures from the thermocouples of Apollo 15 and 17 heat flow experiments. From the LST simulated with the improved model, it is found the annual-seasonal variations present obvious latitude characters, with the highest surface temperature occurring in late October, November, and December separately at high (&gt;∼72°) latitudes, middle latitudes, and low (&lt;∼20°) latitudes, respectively; the lowest surface temperatures occur in late July. Furthermore, the discrepancies between the maximum and minimum temperatures decrease as latitude increases, as do the maximum and minimum lunar surface temperatures. The surface daytime temperature would change by 179.4 K with a 1322.5 W/m2 change in the ESI. A 0.12 W/m2 and 0.02 W/m2 change of the earthshine and heat flow would lead to 0.5 and 0.09 K in surface nighttime temperature, respectively.
High-performance CeFeCo/FeSiAl soft magnetic composites for megahertz power devices
Authors: Wan Wenchen , Wu Chen , Liu Guang , Chen Qiming , Yan Mi 
Published: May 2024

Soft magnetic composites (SMCs) play a crucial role in modern electronics and electrical devices, for which challenges remain in maintaining magnetic performance and reducing loss at megahertz (MHz) frequencies. Here, CeFeCo/FeSiAl@ polyurethane (PU) SMCs have been rationally designed with the simultaneous achievement of large relative permeability, high domain-wall resonance frequency, and low power loss. As a rare-earth soft magnetic alloy, the CeFeCo is promising for high-frequency applications due to its easy-plane anisotropy, whereas FeSiAl is advantageous with increased electrical resistivity as well as approaching-zero magnetocrystalline anisotropy and magnetostriction. Hot pressing has been adopted to achieve a dense and homogeneous distribution of CeFeCo and FeSiAl powders in the PU for reduced magnetic dilution and eddy current loss. The resultant SMCs exhibit optional soft magnetic performance with large relative permeability of 21.0, low power loss of 3677.5 kW·m−3 at 5 MHz, and high domain-wall resonance frequency of 386.1 MHz. As such this work provides insights into the design of high-frequency SMCs incorporating novel rare-earth soft magnetic alloys.