bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of Ocular Findings Following Multisystem Inflammatory Syndrome in Children
Authors: Sahin Aslıhan , Kaya-Guner Emine , Ekemen-Keles Yıldız , Karadag-Oncel Eda , Kara-Aksay Ahu , Yilmaz Dilek 
Published: May 2023

Abstract
Objective Multisystem inflammatory syndrome (MIS-C) in children is associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and can be mortal with the involvement of multiple organ systems. However, long-term effects on all organs and organ systems involvement are still unclear or even whether this condition may still occur in which organs. This report aims to identify ocular findings in children with MIS-C on the follow-up.
Methods This is a prospective cross-sectional study. Cases diagnosed with MIS-C between May 2020 and February 2021 in our hospital (e.g., cases aged 1 month–18 years old) were included in the study. The same ophthalmologist followed up with the patients after discharge. Patients underwent detailed ophthalmic examinations, including slit lamp biomicroscopy and fundoscopy, best-corrected visual acuity, and Schirmer's 2 test.
Results Our study included 22 patients treated with the MIS-C. Twelve (54.5%) were girls, and 10 (45.5%) were boys. Their mean age was 8.7 ± 4.9 years. Pathological ocular findings were found in six (27.2%) patients in the follow-up. The most common finding was punctate epitheliopathy in four (18.2%) patients. The cause of punctate epitheliopathy was dry eye. All patients recovered with treatment.
Conclusion Our study is the first to evaluate ocular findings in MIS-C in the long term. Regardless of the severity of the disease, the most common ocular finding in our study was punctate epitheliopathy, that is, dry eye. According to our results, we think patients should be followed up on pathological ocular findings after discharge.
A NSQIP Analysis of Complications after Simultaneous Bilateral Total Hip Arthroplasty
Authors: Rezzadeh Kevin , Nigh Evan , Debbi Eytan , Rajaee Sean , Paiement Guy 
Published: May 2023

AbstractSimultaneous bilateral total hip arthroplasty (blTHA) offers the benefit of a single episode of care with the potential for lower cumulative operative times and rehabilitation periods than staged bilateral total hip arthroplasty (stTHA). This study analyzes short-term complication rates after blTHA relative to unilateral THA (ulTHA) and projected stTHA in patients with bilateral hip osteoarthritis. We compared complications in a simultaneous blTHA group and a ulTHA group using the National Surgical Quality Improvement Program (NSQIP) database. ulTHA patients were propensity-matched two-to-one against blTHA patients using morbidity probability score. Thirty-day complication rates were compared. Outcomes in staged procedures (stTHA) were projected by doubling complication rates in ulTHA procedures. There were 805 blTHA patients and 1,610 ulTHA patients used to estimate stTHA outcomes. The rate of major complications or death after blTHA was no higher than the projected stTHA rate (2.0 vs 3.0%, p = 0.179), but minor complications were more common after blTHA than stTHA projections (13.5 vs 6.8%, p < 0.001). Mean operative time for blTHA was 39.2 minutes shorter than that for stTHA (p < 0.001); mean hospital stay was 1 day shorter for blTHA than that for stTHA (p < 0.001). Thirty-day rates of periprosthetic fracture (0.62 vs 0.12%, p = 0.045) and dislocation (0.50 vs 0.1%, p = 0.1) were higher after blTHA than stTHA. Simultaneous blTHA appears safe in patients medically fit to tolerate longer uninterrupted surgery and appears to shorten operative time and hospital stay relative to staged THA. There is a significantly higher risk of blood transfusion, periprosthetic fracture, and dislocation after blTHA.
Engineering the glass structure of a discotic liquid crystal by multiple kinetic arrests
Authors: Yu Junguang , Chen Zhenxuan , Fatina Caroline , Chatterjee Debaditya , Bock Harald , Richert Ranko , Voyles Paul , Ediger M. D. , Yu Lian 
Published: May 2023

X-ray scattering has been used to characterize the columnar packing and the π stacking in a glass-forming discotic liquid crystal. In the equilibrium liquid state, the intensities of the scattering peaks for π stacking and columnar packing are proportional to each other, indicating concurrent development of the two orders. Upon cooling into the glassy state, the π–π distance shows a kinetic arrest with a change in the thermal expansion coefficient (TEC) from 321 to 109 ppm/K, while the intercolumnar spacing exhibits a constant TEC of 113 ppm/K. By changing the cooling rate, it is possible to prepare glasses with a wide range of columnar and π stacking orders, including zero order. For each glass, the columnar order and the π stacking order correspond to a much hotter liquid than its enthalpy and π–π distance, with the difference between the two internal (fictive) temperatures exceeding 100 K. By comparison with the relaxation map obtained by dielectric spectroscopy, we find that the δ mode (disk tumbling within a column) controls the columnar order and the π stacking order trapped in the glass, while the α mode (disk spinning about its axis) controls the enthalpy and the π–π spacing. Our finding is relevant for controlling the different structural features of a molecular glass to optimize its properties.
Legume options for summer-active pastures in a temperate rainfall environment of south-eastern Australia
Authors: Stutz Rebecca S. , De Faveri Joanne , Culvenor Richard A. 
Published: May 2023

Context High-quality, summer-active pastures could improve meat production in south-eastern Australia by facilitating livestock finishing over summer, with legumes critical for enhancing the nutritive value of pasture mixes. Available legumes vary in their ability to withstand moisture stress and grazing. Aims We aimed to identify legumes suitable for a summer–autumn finishing system. Methods We tested pure swards of 12 cultivars across eight legume species in replicated small-plot experiments at Goulburn and Bombala, New South Wales, assessing productivity, persistence and warm-season nutritive characteristics over 2–3 years. Key results Lucerne (Medicago sativa) was clearly the most productive species during summer and outperformed the clovers (Trifolium spp.) in terms of persistence and productivity throughout most of the experimental period at both sites, except during autumn 2021 after high rainfall in March. Caucasian clover (T. ambiguum) was also highly persistent at both sites. Talish clover (T. tumens) and strawberry clover (T. fragiferum) were more persistent than white clover (T. repens) and red clover (T. pratense). White clover recovered strongly under high rainfall after drought, whereas red clover established rapidly but showed less capacity for post-drought recovery. Hybrid Caucasian × white clover was the least productive legume. Alternative clover species sometimes had slightly lower values of nutritive characteristics than white clover; red clover sometimes had distinctly lower values. Conclusions Lucerne performed best but several clovers were also productive, persistent and of high nutritive value over the summer–autumn period. Implications Talish, Caucasian and strawberry clovers warrant further investigation for inclusion in summer-active pastures in south-eastern Australia.
Brain imaging and neuropsychological assessment of individuals recovered from a mild to moderate SARS-CoV-2 infection
Authors: Petersen Marvin , Nägele Felix Leonard , Mayer Carola , Schell Maximilian , Petersen Elina , Kühn Simone , Gallinat Jürgen , Fiehler Jens , Pasternak Ofer , Matschke Jakob , Glatzel Markus , Twerenbold Raphael , Gerloff Christian , Thomalla Götz , Cheng Bastian 
Published: May 2023

As severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) infections have been shown to affect the central nervous system, the investigation of associated alterations of brain structure and neuropsychological sequelae is crucial to help address future health care needs. Therefore, we performed a comprehensive neuroimaging and neuropsychological assessment of 223 nonvaccinated individuals recovered from a mild to moderate SARS-CoV-2 infection (100 female/123 male, age [years], mean ± SD, 55.54 ± 7.07; median 9.7 mo after infection) in comparison with 223 matched controls (93 female/130 male, 55.74 ± 6.60) within the framework of the Hamburg City Health Study. Primary study outcomes were advanced diffusion MRI measures of white matter microstructure, cortical thickness, white matter hyperintensity load, and neuropsychological test scores. Among all 11 MRI markers tested, significant differences were found in global measures of mean diffusivity (MD) and extracellular free water which were elevated in the white matter of post-SARS-CoV-2 individuals compared to matched controls (free water: 0.148 ± 0.018 vs. 0.142 ± 0.017,
P
< 0.001; MD [10
−3
mm
2
/s]: 0.747 ± 0.021 vs. 0.740 ± 0.020,
P
< 0.001). Group classification accuracy based on diffusion imaging markers was up to 80%. Neuropsychological test scores did not significantly differ between groups. Collectively, our findings suggest that subtle changes in white matter extracellular water content last beyond the acute infection with SARS-CoV-2. However, in our sample, a mild to moderate SARS-CoV-2 infection was not associated with neuropsychological deficits, significant changes in cortical structure, or vascular lesions several months after recovery. External validation of our findings and longitudinal follow-up investigations are needed.
Identifying a pedagogical genre of literature review
Authors: Afifi Nur 
Published: May 2023

AbstractThis article reports initial parts of a classroom-based action research aimed to teach students to write a literature review (LR), which is considered as a critical, yet often overlooked genre, thus posing difficulties to the students. The existing works on LRs appear to treat the ability to write overviews of individual studies, and to combine them in acceptable ways, as assumed knowledge. In fact, for the learners in the context of the study, and in many second- and foreign-language learning contexts, such abilities are not shared among learners. Therefore, in the implementation of an initial short course, a genre analysis of 60 literature reviews from publications and completed theses in applied linguistics was conducted to identify suitable generic patterns used in literature reviews that could be implemented in the context. The result is apedagogical genre of literature review, a genre description of LRs appropriate for the students’ English proficiency level, outlined in detail in this article with the teaching implication for this pedagogical context.
Where there is panic, the media are close by
Authors: Jiang Qingsheng , Mao Yansheng , Yuan Zhou-min 
Published: May 2023

Abstract
The widespread panic associated with media exposure is a serious challenge to worldwide governments in the prevention and
control of the COVID-19 pandemic. Therefore, alleviating negative social emotions, particularly panic, is an urgent issue for the state
media. By using the comments of a Weibo post from The Central Committee of the Chinese Communist Youth League, drawing on the notion of
extrinsic emotion regulation, this paper conducts a detailed analysis of negative emotions regulation through discourse
strategies by the Chinese state media and their effects in the context of COVID-19. The results demonstrate that, by exploiting language
strategies, the state media can arouse positive emotions amongst users, thus distract the public from experiencing negative emotions. In
addition, the state media participate in online interactions, thereby creating positive public emotional spaces. This study indicates that
digital platforms like Weibo, occasionally equipped with emotionalized narrative, are of significant value in the regulation of negative
emotions in public crisis contexts.
Spanglish and Tex-Mex in the Rio Grande Valley of South Texas
Authors: Rodríguez-Ordóñez Itxaso , McCrocklin Shannon , Tiburcio Alejandra 
Published: May 2023

Abstract
The social meaning of language is embedded in a cultural system of ideas that circulates throughout the historicity of peoples in contact. Border areas are useful for studying the permeability of category constructions, including language boundaries and fluidity of identities. The present study reports survey data from 168 Spanish-English bilinguals in the border region of the Rio Grande Valley of South Texas in the ways they define ‘Spanglish’ vis-à-vis ‘Tex-Mex’ as two distinct ways of speaking. In explaining the contact forms that each label represents and ideologies that have given rise to this distinction, results are discussed using iconization and fractal recursivity (Irvine and Gal 2000) and enregisterment (Agha 2005). Overall, results indicate that for those who make a distinction between Spanglish and Tex-Mex, Spanglish is valorized as more legitimate, whereas Tex-Mex is seen as a localized style of Spanglish also considered more informal.
Families at social risk and access to 0–3 Early Childhood Education and Care in Spain: a model to understand diverse conditions in the current system (Familias en situación de riesgo social y acceso a la educación preescolar de 0 a 3 años en España: un modelo para comprender las situaciones diversas en el sistema actual)
Authors: Matsumoto Mitsuko , Mendoza-Pérez Karmele , Macías-Gómez-Estern Beatriz , Poveda David 
Published: May 2023

It is acknowledged that fewer children from families at social risk and/or socio-economic disadvantage participate in Early Childhood Education and Care (ECEC) across Europe. The article examines who among these families has special difficulties in accessing the first cycle of ECEC for infants 0–3 years of age (0–3 ECEC) in Spain. It presents a model that reveals diverse strategies taken by families in relation to 0–3 ECEC and a particular segment of families who are served ‘worst’ by the current system and whose access to 0–3 ECEC is especially hindered. In the analysis, we also highlight gender; gender appears as a fundamental dimension to understand the forms of participation (or non-participation) in 0–3 ECEC within families at risk of social exclusion. The article is based on a study in which we conducted 35 semi-structured interviews with families at social risk as well as group discussions with a total of 40 family and education professionals in five metropolitan areas of Spain.
On the design of a two-way piezoelectric MEMS microspeaker based on a multi-shape cantilever array for high-frequency applications
Authors: Chen Yu-Chen , Cheng Hsu-Hsiang , Cheng Ming-Ching , Lo Sung-Cheng , Chan Chun-Kai , Fang Weileun 
Published: May 2023

Abstract
This study presents the design and realization of a piezoelectric MEMS microspeaker for high-frequency enhancement. Based on piezoelectric thin film actuation, designs of cantilever diaphragms are conducted by modal analysis. Under a die size of 2.5 mm (w) × 5 mm (l) × 0.4 mm (t), the diaphragms are designed to include mid-range and tweeter units with regard to the balance of radiation area and sound pressure contribution. Furthermore, the out-of-phase driving of the proposed device can ensure that the superposition of the sound pressure level (SPL) is within the target frequency range (8–13 kHz) while reducing the SPL outside the target range. In pressure-field measurements, the proposed multi-shape cantilever array can produce high average SPL (91.6 dB) in the target frequency range from 8 kHz to 13 kHz and has a low total harmonic distortion (THD) of <1.4% under a 0.707 Vrms input signal. The performance can be further improved by biasing the input signal. With a 9 V bias, the average SPL of the proposed microspeaker in the target frequency range is enhanced to 99.4 dB, and the average THD is reduced to <0.7%. In addition, the THD from 7.7 kHz to 18 kHz is below 2.5%. This study shows the great potential of piezoelectric MEMS microspeakers for in-ear applications.
Switchable terahertz absorber based on vanadium dioxide for bandwidth tunable broadband absorption and four-band absorption
Authors: Niu Junhao , Yao Qianyu , Mo Wei , Li Chunhui , Chen Tao 
Published: May 2023

Abstract
We propose a switchable metamaterial absorber (MMA) for bandwidth tunable broadband and four-band absorption in the terahertz (THz) band based on the phase-transition characteristics of vanadium dioxide (VO2). The proposed MMA can achieve over 90% broadband absorption in the 3.06–7.61, 3.18–8.91, and 2.78–9.22 THz ranges when the conductivity of VO2 is

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, respectively, and has the advantages of polarization insensitivity and wide-angle absorption. When VO2 is in the insulator phase, the MMA can achieve four-band high absorption, and the absorptance can reach 99% at 2.23, 4.06, 5.80, and 9.82 THz. Through the joint action of the multi-layer structure, the proposed MMA solves the problem that when only VO2 is used to tune the broadband absorption, the decrease in the conductivity of VO2 by 1 order of magnitude will lead to the obvious decrease in the broadband absorption bandwidth. A switchable absorber designed by a simple tuning method without changing the structure has significant development prospects in stealth technology and selective thermal emitters.
Tamm-surface plasmon resonances from nanograting-coupled plasmonic-photonic multilayer structure for an integrated fiber-optic sensing application
Authors: Liang Yuzhang , Wei Xinran , Chu Shuwen , Zhang Xin , Fang Yurui , Peng Wei 
Published: May 2023

Abstract
Simultaneous observation of Tamm plasmon (TP) and surface plasmon (SP) resonances has attracted much attention to improve the sensing performance and broaden the application field of plasmonic biosensors. Currently, enormous efforts are being devoted to simultaneously excite both SP and TP modes by exploiting total internal reflection. However, this method requires a bulky and complicated prism or microscopy setup to fulfill the phase-matching condition, limiting the miniaturization and integration of sensors. Herein, we propose and theoretically demonstrate a nanograting-coupled plasmonic-photonic multilayer structure potentially integrated on the optical fiber tip, comprising a multilayer of photonic crystal (PC) inserted between a flat gold film and a gold nanograting. The proposed plasmonic-photonic multilayer structure enables the simultaneous excitation of TP and SP modes at the normal incidence by using the zeroth and first-order diffraction light of the nanograting, respectively. The resonant positions of both SP and TP modes can be independently adjusted by changing the nanograting period and the center wavelength of the PC bandgap. Due to the insensitivity of the TP mode to ambient surroundings, the proposed structure can be served as a self-reference SP resonance sensor for robust measurement where the sensitivity of the SP resonance sensor is determined by the wavelength shift of SP mode relative to TP mode. Moreover, the spectral overlapping of both TP and SP modes results in the abrupt change of reflection intensity, which enables a rapid judgment to the refractive index of ambient surroundings by observing the red or blue shifts of SP resonant position relative to the case of TP. The simultaneous excitation of both TP and SP modes in the proposed structure opens a new path for improving detection accuracy and broadening application scenarios of fiber-optic SP resonance sensors.
Improvement of surface insulating performance for polytetrafluoroethylene film by atmospheric pressure plasma deposition
Authors: Ren Chengyan , Chen Yikai , Wang Haozhou , Zhang Chuansheng , Zhang Cheng , Shao Tao 
Published: May 2023

Abstract
The surface flashover phenomenon across a vacuum-dielectric interface severely limits the service life and operational reliability of high voltage electrical equipment. Surface modification by atmospheric pressure plasma treatment is a promising method to improve the surface insulating performance of polymers. In order to explore the mechanism of plasma processing on the vacuum flashover characteristics of polymer materials, atmospheric pressure plasma deposition was used to treat polytetrafluoroethylene (PTFE) film. The surface parameters under different processing conditions, such as surface chemical composition, surface resistivity, surface charge decay and trap distribution, were tested and analyzed. The space charge distribution of PTFE and the flashover voltage in vacuum were measured. The results show that Si–O–Si and Si–OH groups are introduced on the surface of PTFE, and the characteristic peaks of PTFE are gradually weakened with the increase of processing time. The surface trap density increases and more traps with lower energy level arise with longer processing time. The plasma deposition changes the space charge distribution in PTFE body, and leads to positive charge accumulation inside the sample. The flashover field strength respectively increases by 15% and 70% in direct current (DC) voltage and microsecond pulse voltage after plasma deposition. The rapid dissipation of surface charge is the main reason for pulse flashover voltage enhancement, while the increase of surface leakage current due to lower surface resistivity and space charge accumulation in PTFE body make the DC flashover voltage reach the saturation point. Therefore the surface insulating and body performance of polymer materials after plasma modification processing should be considered comprehensively based on different applications.
Mach–Zehnder-like interferometry with graphene nanoribbon networks
Authors: Sanz Sofia , Papior Nick , Giedke Géza , Sánchez-Portal Daniel , Brandbyge Mads , Frederiksen Thomas 
Published: May 2023

Abstract
We study theoretically electron interference in a Mach–Zehnder-like geometry formed by four zigzag graphene nanoribbons arranged in parallel pairs, one on top of the other, such that they form intersection angles of 60∘. Depending on the interribbon separation, each intersection can be tuned to act either as an electron beam splitter or as a mirror, enabling tuneable circuitry with interfering pathways. Based on the mean-field Hubbard model and Green’s function techniques, we evaluate the electron transport properties of such eight-terminal devices and identify pairs of terminals that are subject to self-interference. We further show that the scattering matrix formalism in the approximation of independent scattering at the four individual junctions provides accurate results as compared with the Green’s function description, allowing for a simple interpretation of the interference process between two dominant pathways. This enables us to characterize the device sensitivity to phase shifts from an external magnetic flux according to the Aharonov–Bohm effect as well as from small geometric variations in the two path lengths. The proposed devices could find applications as magnetic field sensors and as detectors of phase shifts induced by local scatterers on the different segments, such as adsorbates, impurities or defects. The setup could also be used to create and study quantum entanglement.
Single silicon synaptic device for stochastic binary spike-timing-dependent plasticity
Authors: Lim Doohyeok 
Published: May 2023

Abstract
In this paper, we present a single silicon synaptic device that enables stochastic binary spike-timing-dependent plasticity. The single silicon synaptic device, which is similar to a conventional metal-oxide-semiconductor field-effect transistor structure, is implemented using standard complementary metal-oxide-semiconductor technology. The stochastic nature of the feedback mechanism induced by weak impact ionization is experimentally demonstrated. Because of probabilistic dynamics in the feedback mechanism, the single silicon synaptic device features stochastic binary spike-timing-dependent plasticity.