bluuebunny/crossref_metadata_2025_split huggingface dataset:
Stock price informativeness and credit default swap trading
Authors: da Silva Paulo Pereira , Vieira Isabel 
Published: April 2023

AbstractThis study develops a difference‐in‐differences analysis to assess whether trading onset of credit default swaps (CDS) on a firm's debt improves price informativeness in the stock market. Price informativeness is measured by the future earnings response coefficient, which captures the amount of information about future earnings conveyed in stock returns. Our sample comprises U.S. firms (firms experiencing CDS trading on their debt and a group of control firms) and covers the period 1997–2015. The results indicate that CDS hinder stock price informativeness, and thus the ability of prices to track long‐term fundamentals, especially before the arrival of negative information about the obligor. The identified impact is stronger when CDS are first traded, becoming less pervasive with the passage of time. Finally, the results indicate that effects were residual during the early stages of CDS market development and peaked during the period 2004–2008. The impact of CDS introduction weakened after new regulation and ISDA protocols entry into force in 2009. This empirical analysis contributes to the literature by improving knowledge on the consequences of CDS trading on economic and financial outcomes. It points out a negative effect on price informativeness in the stock market and indicates that it was smoothed by regulatory measures designed to improve market infrastructure and transparency.
Effective nitric oxide removal from flue gas using UV/H2O2 solution catalyzed by Fe3O4@FeEDTA
Authors: Liu Ziwei , He Feiqiang , Zhou Limin , Li Zhuyao , Zhong Lirong , Ding Jianhua 
Published: April 2023

AbstractBACKGROUNDHow to control NOx emission in flue gas economically and efficiently is the focus in the field of energy and environment in the world. In this work, Fe3O4‐magnetic microspheres were employed as the matrix with loading FeEDTA (where EDTA is ethylenediaminetetraacetic acid) to prepare magnetic denitrification absorbent Fe3O4@FeEDTA. The performance of nitric oxide (NO) removal using Fe3O4@FeEDTA dispersed in H2O2 solution with ultraviolet (UV) was first investigated.RESULTSThe results showed that Fe3O4@FeEDTA could be used as a good catalytic oxidation denitrification agent. Increasing H2O2 concentration and O2 concentration could promote NO absorption. NO removal efficiency increased as pH value increased from 1.5 to 3.0, then decreased when pH continued to increase. The elevated temperature was conducive to NO removal. CO2 hardly affected the removal of NO, while SO2 with high concentration was not conducive to NO absorption. In addition, the NO removal mechanism was preliminarily analyzed with X‐ray photoelectron spectrometry, electron spin resonance and ion chromatography. The mechanism study indicated that NO removal by Fe3O4@FeEDTA/H2O2 was a catalysis–complexation–oxidation–absorption process, in which •OH was determined to be the main oxidizing species, and NO captured by Fe(II)EDTA was mainly oxidized by •OH to NO3−.CONCLUSIONThe catalytic activity of Fe3O4@FeEDTA could maintain stability during the repeat experiment, realizing the recycling and reuse of Fe3O4@FeEDTA. The UV‐Fe3O4@FeEDTA‐activated H2O2 advanced oxidation technology is suitable for wet denitrification. © 2023 Society of Chemical Industry (SCI).
Control of new energy‐intensified triple column extractive distillation using feed split technique
Authors: Kong Zong Yang , Wang Qin , Yang Ao , Qin Zhongjian , Heah Joo Yee , Sunarso Jaka 
Published: April 2023

AbstractBACKGROUNDHere, we investigated the control performance of extractive distillation intensified with ‘feed split’ (FS) technique – a process intensification technique that has not been widely applied to extractive distillation. Today, only a handful of studies have been reported on this topic, with only one focusing on the control performance and reporting the significant trade‐off between the steady‐state and dynamic performances. Nonetheless, the previous control study was based on the complex double column FS configuration. Recently, a new triple column FS configuration was reported (Sep. Purif. Technol. 2022 (297) 121467), but its control performance was not investigated. Hypothetically, the triple column FS configuration is less complex and does not involve any column integration and thus, may demonstrate a better dynamic performance. This study analyzed the control performances of the triple column FS configuration and the conventional configuration for the binary azeotropic separation of tetrahydrofuran and ethanol.RESULTSTwo types of control structures were examined for both configurations, i.e., the basic temperature control structure and the different feed forward temperature control schemes. The best control structure from each configuration is compared and findings showed that the conventional configuration provides better controllability performance.CONCLUSIONOur results suggested that the conventional configuration can bring the product qualities closer to their setpoint, while providing a lower transient deviation. © 2023 Society of Chemical Industry (SCI).
Oral maxillofacial surgery resident, faculty and practitioner role models and dental students' interest in oral maxillofacial surgery careers: Does gender matter?
Authors: Marti Kyriaki C. , Edwards Sean P. , Inglehart Marita R. 
Published: April 2023

AbstractPurposeResidency programs in oral maxillofacial surgery (OMS) have the lowest percentage (2020: 18.4%) of female graduates among all dental specialty programs. When considering this underrepresentation of female OMS residents, prior studies have not examined how OMS role models might shape dental students’ interest in OMS careers. The objectives were to assess female versus male students’ OMS‐related career motivation, their experiences/attitudes toward three groups of OMS role models (i.e., OMS residents, faculty, and practitioners), and relationships between role model‐related experiences/attitudes and career motivation.Methods363 female and 335 male students from 14 United States and two Canadian dental schools participated in this cross‐sectional study by responding to an online survey.Results13.8% of female and 26% of male respondents (p < 0.001) were much/very much interested in OMS careers. More male than female students had shadowed an OMS in an office setting (43.4% vs. 35.1%; p < 0.05). The groups did not differ in their motivation to learn more and earlier about OMS nor in the quantity of OMS‐related experiences prior to and during dental school. However, male students were more satisfied with the quality of these experiences (5‐point scale with 5 = most positive: Means: 3.76 vs. 3.53; p < 0.05), were more comfortable approaching/working with OMS instructors (3.51 vs. 3.19; p < 0.01) and reported to have learned more from residents (3.52 vs. 3.31; p < 0.05) and faculty (3.75 vs. 3.45; p < 0.01) than female students. Female students agreed less that OMS residents, faculty, and practitioners encouraged students to pursue OMS (3.27 vs. 3.44; p < 0.01 / 3.46 vs. 3.63; p < 0.01 / 3.45 vs. 3.61; p < 0.01). Role model‐related experiences and attitudes correlated with an interest in an OMS career.ConclusionsThe two groups do not differ in the quantity of most OMS experiences before and during dental school and their motivation to learn more and earlier about OMS. However, female students’ less positive OMS‐related educational experiences and less positive attitudes toward role models correlate with a lower interest in OMS careers.
Evaluating a dental sleep apnea mini‐residency program using the Kirkpatrick model
Authors: Banasr Abdulaziz , Finkelman Matthew D. , Dragan Irina F. , Ramesh Aruna , Mehta Noshir R. , Correa Leopoldo P. 
Published: April 2023

AbstractObjectiveThe aim of this retrospective study was to evaluate a Dental Sleep Medicine Mini‐Residency (DSMMR) continuing education (CE) program using the Kirkpatrick model.MethodsAfter receiving ethical approval, data from participants in the 2019–2020 DSMMR CE course were included for the Kirkpatrick evaluation. The analysis was stratified and all the Kirkpatrick levels were integrated: level 1 (satisfaction) was assessed via Likert scale and open‐ended questions; level 2 (learning) was evaluated using pretest and posttest knowledge data following Module 1 (M1) and an assessment of multiple‐choice questions (MCQs) developed by participants; level 3 (behavior) was evaluated using Likert scale questions; and level 4 (results) was assessed via the percentage of participants who passed the American Board of Dental Sleep Medicine (ABDSM) examination on their first attempt.ResultsA total of 90 participants were included in the study. At least 83.1% of participants agreed/strongly agreed with positively worded statements about satisfaction. Knowledge scores significantly increased from pre‐M1 to post‐M1 (p < 0.001); however, only 15.2% of MCQs were evaluated as well‐formulated. At least 88.6% of participants agreed/strongly agreed with positively worded statements about transfer of knowledge/skills to their practice. 91.1% passed the ABDSM examination on their first attempt.ConclusionThe evaluation of the 2019–2020 DSMMR using the Kirkpatrick model suggests its overall positive impact as a training program. The Kirkpatrick model provided information that can be used to improve the quality of a program. Future studies should assess other dental CE programs using the Kirkpatrick model or another evaluation model.
Adaptable and conflict colouring multigraphs with no cycles of length three or four
Authors: Aliaj Jurgen , Molloy Michael 
Published: April 2023

AbstractThe adaptable choosability of a multigraph , denoted , is the smallest integer such that any edge labelling, , of and any assignment of lists of size to the vertices of permits a list colouring, , of such that there is no edge where . Here we show that for a multigraph with maximum degree and no cycles of length 3 or 4, . Under natural restrictions we can show that the same bound holds for the conflict choosability of , which is a closely related parameter recently defined by Dvořák, Esperet, Kang and Ozeki.
Serendipita indica chitinase protects rice from the blast and bakanae diseases
Authors: Li Xinrui , Wajjiha Batool , Zhang Penghui , Dang Yuejia , Prasad Ram , Wei Yi , Zhang Shi‐Hong 
Published: April 2023

AbstractSerendipita indica, a multifunctional and useful endophyte fungus, has been intensively investigated in promoting plant growth and resistance towards biotic and abiotic stress. Multiple chitinases from microorganisms or plants have been identified to have a high antifungal activity as a biological control. However, chitinase of S. indica still needs to be characterized. We functionally characterized a chitinase (SiChi) in S. indica. The result showed that the purified SiChi protein confers high chitinase activity; importantly, SiChi inhibits the conidial germination of Magnaporthe oryzae and Fusarium moniliforme. After the successful colonization of rice roots by S. indica, both the rice blast disease and bakanae disease were significantly reduced. Interestingly, the purified SiChi could promptly induce rice disease resistance towards M. oryzae and F. moniliforme pathogens when sprayed on rice leaves. Like S. indica, SiChi could upregulate rice pathogen‐resistant proteins and defense enzymes. In conclusion, chitinase of S. indica has direct antifungal activity and indirect induced resistance activity, implying an efficient and economic strategy for rice disease control by applying S. indica and SiChi.
Combined femoral and acetabular version and synovitis are associated with dGEMRIC scores in people with femoroacetabular impingement (FAI) syndrome
Authors: Murphy Nicholas J. , Eyles Jillian , Spiers Libby , Davidson Emily J. , Linklater James M. , Kim Young Jo , Hunter David J. 
Published: April 2023

AbstractThis study sought to explore, in people with symptoms, signs and imaging findings of femoroacetabular impingement (FAI syndrome): (1) whether more severe labral damage, synovitis, bone marrow lesions, or subchondral cysts assessed on magnetic resonance imaging (MRI) were associated with poorer cartilage health, and (2) whether abnormal femoral, acetabular, and/or combined femoral and acetabular versions were associated with poorer cartilage health. This cross‐sectional study used baseline data from the 50 participants with FAI syndrome in the Australian FASHIoN trial (ACTRN12615001177549) with available dGEMRIC scans. Cartilage health was measured using delayed gadolinium‐enhanced MRI of cartilage (dGEMRIC) score sampled at the chondrolabral junction on three midsagittal slices, at one acetabular and one femoral head region of interest on each slice, and MRI features were assessed using the Hip Osteoarthritis MRI Score. Analyses were adjusted for alpha angle and body mass index, which are known to affect dGEMRIC score. Linear regression assessed the relationship with the dGEMRIC score of (i) selected MRI features, and (ii) femoral, acetabular, and combined femoral and acetabular versions. Hips with more severe synovitis had worse dGEMRIC scores (partial η2 = 0.167, p = 0.020), whereas other MRI features were not associated. A lower combined femoral and acetabular version was associated with a better dGEMRIC score (partial η2 = 0.164, p = 0.021), whereas isolated measures of femoral and acetabular version were not associated. In conclusion, worse synovitis was associated with poorer cartilage health, suggesting synovium and cartilage may be linked to the pathogenesis of FAI syndrome. A lower combined femoral and acetabular version appears to be protective of cartilage health at the chondrolabral junction.
A randomized controlled trial evaluating the effect of epithelial removal on free soft tissue autograft healing
Authors: Lacy Julia A. , Palaiologou Archontia A. , Kotsakis Georgios A. , Deas David E. , Diogenes Anibal , Mealey Brian L. 
Published: April 2023

AbstractBackgroundThe purpose of this study is to determine if there is a difference in dimensional change of a free soft tissue autograft (FSTA) with epithelium compared to without epithelium. The secondary aim is to determine the patient and professional evaluation of color match and graft texture between the two groups.MethodsPatients with ≤2 mm keratinized tissue indicated for a FSTA were randomly assigned to control group (FSTA with epithelium) or test group (de‐epithelialized FSTA). The vertical and horizontal measurements of the grafts were taken at surgery, and 1, 3, and 6 months postoperatively. Patients were asked to evaluate the color match at each postoperative time point on a 21‐step Numeric Rating Scale (NRS‐21). Professional assessment of color match and graft texture were evaluated on images at the same time points.ResultsForty‐six patients and 55 grafts were included in the study. For change in graft height, width, and area, there were no significant differences between the treatment groups at any time point. Graft height and area in both groups decreased significantly from baseline to month 1 (p < .001), but no other difference was significant over time. When patients and professionals used the NRS‐21 for evaluation of color match between the graft site and the surrounding soft tissue, there was no significant difference between the treatment groups. Similarly, evaluation of texture match on color images and black‐and‐white images revealed no significant differences between or within groups.ConclusionDe‐epithelialized FSTA showed no difference in dimensional change or color and texture match compared to FSTA with epithelium.
Comparison of five methods to determine the cation exchange capacity of soil
Authors: Nel Teneille , Bruneel Yaana , Smolders Erik 
Published: April 2023

AbstractBackgroundCation exchange capacity (CEC) is a routinely measured soil fertility indicator. The standard NH4OAc (pH 7) extraction procedure is time‐consuming and overestimates actual CEC values of variable charge soils. Unbuffered extractants have been developed to measure the effective CEC (eCEC), but they differ in the type of index cation and extraction procedures.AimThis study was set up to systematically compare CEC values and exchangeable cation concentrations among different procedures and evaluate their practical aspects.MethodsFive procedures were compared for (e)CEC, that is, silver thiourea (AgTU), cobalt(III) hexamine (Cohex), compulsive exchange (CE, i.e., BaCl2/MgSO4), BaCl2 (sum of cations in single‐extract), and NH4OAc (pH 7). We applied these methods to a set of 25 samples of clay minerals, peat, or samples from soils with contrasting properties.ResultsThe CEC values correlated well among methods (R2 = 0.92–0.98). Median ratios of eCEC (AgTU as well as CE) to the corresponding eCEC (Cohex) value were 1.0, showing good agreement between eCEC methods, but NH4OAc exceeded Cohex values (ratios up to 2.5 in acid soil). For BaCl2‐extracteable cations, the ratio ranged from low (<1.0) in acid soils (acid cations not measured) to high (>1.0) in high‐pH soil (dissolution of carbonates). Multiple‐extraction methods (CE and NH4OAc) yielded more variation and increased labor.ConclusionsThe chemical properties of the sample cause method‐specific interactions with chemical components of extractants. We found the Cohex method with ICP‐MS detection to be the most efficient and cost‐effective technique for determination of eCEC and exchangeable cations.
Triple Semicircular Canal Plugging versus Labyrinthectomy for Meniere Disease: A Retrospective Study
Authors: Li Xiaofei , Lyu Yafeng , Li Yawei , Jian Huirong , Wang Jing , Song Yongdong , Kong Ligang , Fan Zhaomin , Wang Haibo , Zhang Daogong 
Published: April 2023

ObjectivesThe study goals were to compare the long‐term efficacy of semicircular canal plugging (SCP) with labyrinthectomy in the treatment of advanced Meniere's disease (MD).Study DesignA retrospective study.SettingSingle tertiary medical center.MethodsA total of 116 MD patients (TSCP group of 90; labyrinthectomy group of 26) with complete medical documents in Shandong Provincial ENT Hospital, from March 2017 to March 2019 were retrospectively analyzed, including a battery of auditory and vestibular function tests, recovery time from imbalance and function level scores (FLS).ResultsThe total control rate of vertigo in the TSCP group was 96.7% (87/90). The rate of hearing loss was 23.3% (21/90). The control rate of vertigo in the labyrinthectomy group was 100% (26/26). All patients lost their auditory function after labyrinthectomy with a 100% hearing loss rate. There was no significant difference in the vertigo control rate between the two groups (P > 0.05). The hearing loss rate in the TSCP group was significantly lower than that in the labyrinthectomy group (P < 0.00). The median time recovered from imbalance was 15 days in TSCP group and 21 days in labyrinthectomy group, which is significantly different (P < 0.05). There was no significant difference in the FLS between the two groups (P > 0.05).ConclusionsCompared to labyrinthectomy, TSCP can preserve hearing at a high probability; meanwhile, otolith organ function preservation benefits patients from faster vestibular compensation.Level of Evidence3 Laryngoscope, 133:3178–3184, 2023
Universal Active Metasurfaces for Ultimate Wavefront Molding by Manipulating the Reflection Singularities
Authors: Elsawy Mahmoud , Kyrou Christina , Mikheeva Elena , Colom Rémi , Duboz Jean‐Yves , Kamali Khosro Zangeneh , Lanteri Stéphane , Neshev Dragomir , Genevet Patrice 
Published: April 2023

AbstractOptical metasurfaces are becoming ubiquitous optical components to control light properties. However, most of these devices are passive and cannot be arbitrarily reconfigured according to the change in the surrounding environment. Here the authors propose an innovative design strategy relying on the position of topological singularities to address full phase modulation of light with almost unity efficiency. The active metasurface unit cells consist of asymmetric Gires–Tournois resonators filled with either silicon or hetero‐structured materials to leverage on the thermo‐optical or electro‐optical effects, respectively. In both cases, a full phase modulation associated with 100% reflection amplitude is observed even when dealing with extremely low refractive index change, on the order of 0.01. Improving the deflection efficiencies for each deflection angle is performed by optimizing the refractive index modulation profile in the extended unit cell using an advanced statistical learning optimization methodology. Consequently, active beam steering designs for active thermo‐optical effect with ultimate performance exceeding 90% have been optimized. Furthermore, active wavefront splitting using electro‐optics materials is optimized to reach ultimate modulation performances with nearly 92% efficiency. The realization of highly efficient active beam‐forming operating at high frequencies would open important applications in imaging microscopy, and 3D light detection and ranging (LiDAR).
Manipulating Laser Modes in Diffusive Disordered Systems by Precisely Designing the Boundary of the Local Pump
Authors: Shi Xiaoyu , Song Wanting , Liang Ningning , Guo Dan , Shen Kaiyue , Zhai Tianrui 
Published: April 2023

AbstractManipulating laser modes in diffusive random systems is crucial to understanding the optical physics of disordered structures. However, the laser modes in diffusive random lasers are highly extended and correlated, making their manipulation difficult. Herein, this work reveals the critical role of the pump boundary on the governing mode interaction and emission characteristics of diffusive random lasers (RLs). By increasing the ratio between the square root of the pump area and the circumference of the pump region, the strongly correlated nonresonant laser mode with a continuous spectral distribution is transformed into an independent resonant laser mode with a discrete frequency distribution. A critical ratio of 5.76 is demonstrated as the transition point for pump spots with arbitrary shapes. This pump strategy provides a universal guideline for regulating laser modes in diffusive RL systems that can be applied to multifunctional lasers to clarify the behavior of light in disordered structures.
Programmable Aperture Light‐Field Microscopy
Authors: Cai Zewei , Zhang Runnan , Zhou Ning , Chen Qian , Zuo Chao 
Published: April 2023

AbstractA computational three‐dimensional (3D) microscopy technique, termed programmable aperture light‐field microscopy (PALFM), for motion‐free, high‐resolution volumetric imaging of fluorescent or self‐luminous samples is proposed. The well‐known Fourier slice theorem is extended to incoherent tomographic imaging, which states that a detected image under an ideal aperture corresponds to a central slice in the 3D object spectrum, so the spectrum coverage can be accomplished based on the motion‐free aperture modulation. When further considering frequency extension and coverage, a hybrid aperture modulation scheme is designed consisting of non‐centrosymmetric circular and annular apertures for high‐efficiency, non‐ambiguous depth discrimination. A PALFM system with an easy‐to‐build programmable aperture module attached to an off‐the‐shelf inverted fluorescence microscope is constructed, where annular apertures can manipulate Bessel‐like beams for spectrum modulation. Experimental results on near‐diffraction‐limited imaging of a resolution target across a large depth range and high‐resolution, multi‐color 3D imaging of a mouse kidney section verify the validity and effectiveness of PALFM. High‐speed, long‐term time‐lapse volumetric imaging of HeLa cells in vitro further demonstrates that PALFM is a promising tomographic imaging tool for studying dynamic cellular processes and events without requiring complicated sample rotation or beam scanning.