bluuebunny/crossref_metadata_2025_split huggingface dataset:
Intervenciones quirúrgicas por patología meniscal en adultos de edad media y adultos mayores en Chile
Authors: Pineda Tomás , Donoso Rodrigo , Díaz-Ledezma Claudio 
Published: May 2023

ResumenObjetivo Hacer un análisis descriptivo de las intervenciones quirúrgicas por patología meniscal realizadas en Chile en adultos de edad media y mayores, entre los años 2016 y 2018, considerando la previsión como un factor relevante.Método Realizamos un análisis descriptivo de la base de datos de egresos hospitalarios del Ministerio de Salud entre 2016 y 2018, según los códigos de la Clasificación Internacional de Enfermedades, 10.ª edición (CIE-10), que fueron cruzados con los códigos de intervenciones quirúrgicas del Fondo Nacional de Salud (Fonasa) para menisectomías.Resultados Se analizaron 21.424 procedimientos en 139 centros. El 51,3% (10.983 casos) del total de casos se concentró en el grupo de edad media. El grupo de adultos mayores registró el 10,5% (2.254 casos), sumando ambos grupos el 61,8% del total de casos. Los pacientes sometidos a menisectomía parcial artroscópica (MPA) bajo la modalidad de pago asociado a un diagnóstico (PAD) resultaron ser significativamente mayores (p < 0,01). Las 3 instituciones que lideran la estadística son centros privados con convenio PAD, que concentran el 26% de los casos.Discusión En Chile, la mayoría de las cirugías meniscales se observan específicamente en el grupo etario en que la evidencia sugiere que la utilidad de este procedimiento es más discutible. Aunque las explicaciones pueden ser variadas, consideramos importante el reconocimiento de este fenómeno, teniendo en cuenta que Fonasa, que abarca la mayoría de las pacientes del sistema público chileno, es capaz de financiar gran parte de la cirugía a través de la modalidad PAD.Conclusión Las cirugías meniscales en Chile se concentran en el grupo etario en que su utilidad es más discutible.Nivel de evidencia IV.
Parent Preferences and Experiences in Advance Care Planning in the Neonatal Intensive Care Unit
Authors: Lin Matthew , Williams David , Vitcov Giselle , Sayeed Sadath , DeCourcey Danielle D. , Wolfe Joanne , Cummings Christy 
Published: May 2023

Objective Our objective was to evaluate the preferences and experiences of bereaved parents around advance care planning (ACP) in the neonatal intensive care unit (NICU).
Study Design Single-center cross-sectional survey of bereaved parents who experienced the death of a child in the Boston Children's Hospital NICU between 2010 and 2021 was carried out. Chi-square, Fisher's exact, Fisher Freeman Halton, and Wilcoxin rank sum tests were used to evaluate differences between parents who did and did not receive ACP.
Results Out of eligible parents, 40 out of 146 (27%) responded to our survey. Most parents (31 out of 33, 94%) rated ACP as being very important and 27 out of 33 (82%) reported having ACP discussions during their child's admission. Parents preferred initial ACP discussions to occur early in their child's illness trajectory with members of the primary NICU team, with most parents' experiences aligning with these preferences.
Conclusion Parents value ACP discussions suggesting a further role for ACP in the NICU.
Key Points
International comparison CCQM-K150: particle number concentration (100 to 20 000 cm-3) and particle charge concentration (0.15 to 3 fC cm-3)
Authors: Brown Andrew S , Quincey Paul , Ebert Volker , Nowak Andreas , Tompkins Jordan T , Hessey Isabel , Ciupek Krzysztof , Schaefer Carlo , Werhahn Olav , Vasilatou Konstantina , Lüönd Felix , Macé Tatiana , Gaie-Levrel François , Bregonzio-Rozier Lola , Oganyan Narine , Belenkii Dmitrii , Sakurai Hiromu , Murashima Yoshiko , Liu Junjie , Jung Jinsang , Seeger Stefan 
Published: May 2023

Main text
This report presents the results of CCQM-K150, a key comparison between nine National Measurement Institutes (NMIs) which tested the capability of the NMIs to measure particle number concentration (in the range of 100 to 20 000 cm-3) using condensation particle counters (CPCs), and particle charge concentration (in the range of 0.15 to 3 fC cm-3) using aerosol electrometers (AEs).
Measurements of aerosol particle number concentration are needed to demonstrate compliance to vehicle emission legislation and are becoming increasingly important in other areas such as ambient air and workplace monitoring. The measurements are typically carried out using condensation particle counters, which are calibrated using either reference CPCs or reference AEs.
An analogous report is available for the CCQM-P189 comparison. CCQM-P189 was identical to and used the same experimental data as CCQM-K150 with one exception: data from TROPOS, which is not an NMI or Designated Institute (DI), were only included in CCQM-P189.
CCQM-K150 was an amount-of-substance Track C comparison.
To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/.
The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
EBWeyl: a code to invariantly characterize numerical spacetimes
Authors: Munoz Robyn L , Bruni Marco 
Published: May 2023

Abstract
Relativistic cosmology can be formulated covariantly, but in dealing with numerical relativity simulations a gauge choice is necessary. Although observables should be gauge-invariant, simulations do not necessarily focus on their computations, while it is useful to extract results invariantly. To this end, in order to invariantly characterize spacetimes resulting from cosmological simulations, we present two different methodologies to compute the electric and magnetic parts of the Weyl tensor,

E

α
β

and

B

α
β

, from which we construct scalar invariants and the Weyl scalars. The first method is geometrical, computing these tensors in full from the metric, and the second uses the 3 + 1 slicing formulation. We developed a code for each method and tested them on five analytic metrics, for which we derived

E

α
β

and

B

α
β

and the various scalars constructed from them with computer algebra software. We find excellent agreement between the analytic and numerical results. The slicing code outperforms the geometrical code for computational convenience and accuracy; on this basis we make it publicly available in github with the name EBWeyl. We emphasize that this post-processing code is applicable to any numerical spacetime in any gauge.
Identifying native point defect configurations in α-alumina
Authors: Kononov Alina , Lee Cheng-Wei , Shapera Ethan P , Schleife André 
Published: May 2023

Abstract
Intimately intertwined atomic and electronic structures of point defects govern diffusion-limited corrosion and underpin the operation of optoelectronic devices. For some materials, complex energy landscapes containing metastable defect configurations challenge first-principles modeling efforts. Here, we thoroughly reevaluate native point defect geometries for the illustrative case of α-Al2O3 by comparing three methods for sampling candidate geometries in density functional theory calculations: displacing atoms near a naively placed defect, initializing interstitials at high-symmetry points of a Voronoi decomposition, and Bayesian optimization. We find symmetry-breaking distortions for oxygen vacancies in some charge states, and we identify several distinct oxygen split-interstitial geometries that help explain literature discrepancies involving this defect. We also report a surprising and, to our knowledge, previously unknown trigonal geometry favored by aluminum interstitials in some charge states. These new configurations may have transformative impacts on our understanding of defect migration pathways in aluminum-oxide scales protecting metal alloys from corrosion. Overall, the Voronoi scheme appears most effective for sampling candidate interstitial sites because it always succeeded in finding the lowest-energy geometry identified in this study, although no approach found every metastable configuration. Finally, we show that the position of defect levels within the band gap can depend strongly on the defect geometry, underscoring the need to conduct careful searches for ground-state geometries in defect calculations.
Online measurement system of slab front-end bending in hot rough rolling based on line structured light vision
Authors: Yan Shuzong , Xu Dong , He Wanzhang , Yan Huiqing , Zhou Jinhang , Jin Guangyin , Wu Tongqing , Liu Lihui , Yu Haijun , Wang Xiaochen , Yang Quan 
Published: May 2023

Abstract
Front-end bending is one of the most significant defects of slabs in hot rough rolling. To address the lack of effective methods to detect slab front-end bending in hot rolling, a measurement system based on line structured light vision is proposed in this paper. Line structured light lasers and area-scan cameras are arranged on the supports on both the exit and entrance of a roughing mill. First, the calibration of the measurement system is completed by camera calibration and the random sampling consistency algorithm. Second, multiple regions of interest gray thresholds and the Steger algorithm are used to realize laser centerline extraction on the surface of a large-scale and high-temperature slab. Last, the actual value of the slab front-end bending is obtained and calculated through coordinate transformation. The proposed measurement system can detect slab front-end bending in real time and the relative mean deviation is 0.93%.
New insight into the dynamics of non-Newtonian Powell-Eyring fluid conveying tiny particles on Riga plate with suction and injection
Authors: Shah Syed Asif Ali , Alanazi Meznah M , Malik Muhammad Fawad , Abbas Zafar 
Published: May 2023

Abstract
The purpose of the current work is to determine how a magnetic field, nonlinear thermal radiation, a heat source or sink, a Soret, and activation energy affect bio-convective nanofluid flow across a Riga plate in terms of heat transfer qualities. The major goal of this investigation is to enhance the heat transfer rate. The flow problem is demonstrated in the form of a collection of PDEs. Since the generated governing differential equations are nonlinear, we use a suitable similarity transformation to change them from partial to ODEs. The bvp4c package in MATLAB is used to numerically solve the streamlined mathematical framework. The impacts of numerous parameters on temperature, velocity, concentration, and motile microorganisms profiles are examined through graphs. Whereas, skin friction and Nusselt number are illustrated using tables. As the magnetic parameter values are raised, the velocity profile is seen to decrease and the temperature curve exhibits the opposite tendency. Additionally, the heat transfer rate expands as the nonlinear radiation heat factor is enhanced. Moreover, the outcomes in this investigation are more consistent and precise than in earlier ones.
Metastable argon atom kinetics in a low-pressure capacitively coupled radio frequency discharge
Authors: Donkó Zoltán , Hartmann Peter , Korolov Ihor , Schulenberg David , Rohr Stefan , Rauf Shahid , Schulze Julian 
Published: May 2023

Abstract
The kinetics of excited atoms in a low-pressure argon capacitively coupled plasma source are investigated by an extended particle-in-cell/Monte Carlo Collisions simulation code coupled with a diffusion-reaction-radiation code which considers a large number of excited states of Ar atoms. The spatial density distribution of Ar atoms in the 1s5 state within the electrode gap and the gas temperature are also determined experimentally using tunable diode laser absorption spectroscopy. Processes involving the excited states, especially the four lower-lying 1s states are found to have significant effects on the ionization balance of the discharge. The level of agreement achieved between the computational and experimental results indicates that the discharge model is reasonably accurate and the computations based on this model allow the identification of the populating and de-populating processes of the excited states.
Brewster angle-cavity ringdown spectroscopy for low temperature plasma measurements in multiphases
Authors: Cohen Rongrong W , Wang Chuji 
Published: May 2023

Abstract
We report on the development of a Brewster angle-cavity ringdown spectroscopy (BA-CRDS) system for low temperature plasma diagnostics. The system can measure gas species in solutions, with a detection limit (minimum detectable absorbance) of 9.1 × 10−5, which is equivalent to a detection limit of 0.04 parts per billion for measuring OH radicals in water at 308 nm. With higher reflectivity ringdown mirrors and improved design of a Brewster angle cell, the detection limit can potentially be up to 10−6 or lower. In this exploratory study, the absorption cross sections of HgBr2 and H2O2 in the aqueous phase at 256 nm are measured to be (1.8 ± 0.1) × 10−18 cm2 and (5.2 ± 0.5) × 10−20 cm2, respectively. Furthermore, temporal profiles of absorbance from distilled water, HgBr2, and H2O2 solutions when interacting with a helium atmospheric plasma jet are individually characterized at different plasma powers, gas flow rates, and/or solute concentrations. The observed linear temporal profiles of absorbance from the plasma-interacted water suggest formation of H2O2 from plasma-generated OH radicals, while the nonlinear temporal profiles from the plasma-treated HgBr2 solutions reveal possible removal of HgBr2 by OH radicals. Our results demonstrate that the new BA-CRDS system is a powerful tool for quantification of reactive plasma species in multiphases or other complex settings.
Nambu-Goto dynamics of field theory cosmic string loops
Authors: Blanco-Pillado Jose J. , Jiménez-Aguilar Daniel , Lizarraga Joanes , Lopez-Eiguren Asier , Olum Ken D. , Urio Ander , Urrestilla Jon 
Published: May 2023

Abstract
We perform a detailed comparison of the dynamics of cosmic string
loops obtained in cosmological field theory simulations with their expected motion according to the
Nambu-Goto action. We demonstrate that these loops follow the
trajectories predicted within the NG effective theory except in regions
of high curvature where energy is emitted from the loop in the form of massive
radiation. This energy loss continues for all the loops
studied in this simulation until they self-intersect or become small enough that they annihilate
and disappear well before they complete a single oscillation. We comment on the relevance of this
investigation to the interpretation of the results from cosmological field theory simulations
as well as their extrapolation to a cosmological context.
Ferroelectricity of hafnium oxide-based materials: Current status and future prospects from physical mechanisms to device applications
Authors: Yang Wanwang , Yu Chenxi , Li Haolin , Fan Mengqi , Song Xujin , Ma Haili , Zhou Zheng , Chang Pengying , Huang Peng , Liu Fei , Liu Xiaoyan , Kang Jinfeng 
Published: May 2023

Abstract
The finding of the robust ferroelectricity in HfO2-based thin films is fantastic from the view point of both the fundamentals and the applications. In this review article, the current research status of the future prospects for the ferroelectric HfO2-based thin films and devices are presented from fundamentals to applications. The related issues are discussed, which include: 1) The ferroelectric characteristics observed in HfO2-based films and devices associated with the factors of dopant, strain, interface, thickness, defect, fabrication condition, and more; 2) physical understanding on the observed ferroelectric behaviors by the density functional theory (DFT)-based theory calculations; 3) the characterizations of microscopic and macroscopic features by transmission electron microscopes-based and electrical properties-based techniques; 4) modeling and simulations, 5) the performance optimizations, and 6) the applications of some ferroelectric-based devices such as ferroelectric random access memory, ferroelectric-based field effect transistors, and the ferroelectric tunnel junction for the novel information processing systems.
Quantum fluctuation theorem for initial near-equilibrium system
Authors: Xu Bao-Ming 
Published: May 2023

Abstract
Quantum fluctuation theorem (FT) commonly requires the system initially prepared in an equilibrium state. Whether there exists universal exact quantum FT for initial states beyond equilibrium needs further discussions. In the present paper, we initialize the system in a near-equilibrium state, and derive the corresponding modified Jarzynski equality by using perturbation theory. The correction is nontrivial since it directly leads to the principle of maximum work or the second law of thermodynamics for near-equilibrium system, and also offers a much tighter bound of work. Two prototypical near-equilibrium systems driven by a temperature gradient and an external field, are taken into account, to confirm the validity and the generality of our theoretical results. Finally, a fundamental connection between quantum critical phenomenon and near-equilibrium state at really high temperature is revealed.
Wide Area Standby Automatic Switching Control Scheme Considering Renewable Energy
Authors: Yan Yabing , Xu Liqiang , Huang Yong , Li Hui , Su Tiantian , Wang Ding 
Published: May 2023

Abstract
The backup automatic switch (BPAS) will refuse to operate when considering the support of bus voltage provided by the distributed renewable energy, thus threatening the stable operation of the distributed network. To address this problem, an optimized control scheme based on the wide-area BPAS is proposed. The mechanism of the refusal of BPAS caused by distributed renewable energy is analysed. Then, to improve the reliability of the power supply without discarding renewable energy, the existence of renewable energy is judged with the help of the energy management system, and the capacity ratio of the renewable energy and load is calculated. Then the capacity ratio is used to optimize their coordinated operation, e.g., their adjustments and recovery. Simulation results show that the optimized BPAS control scheme can effectively ensure the consumption of renewable energy and the power quality of load.
Feasibility Analysis of a Direct-drive PV Heat Pump System Based on Phase Change Heat Storage
Authors: Liu Junjie , Fan Yi , Shi Zhengrong , Zhang Tao 
Published: May 2023

Abstract
A direct-drive PV pump system based on phase change heat storage is proposed to address the current building energy consumption problem in heating/cooling. The system can solve the problems of unstable solar energy, high battery cost, and short battery service life. Taking a 45m
2 office in Shanghai as the research object, the annual dynamic simulation model of the system is built through TSNSYS. The linear weighted evaluation function method is used for multi-objective optimization analysis of system performance and cost. The results show that the selection scheme with a PV area of 26 m2, a phase change volume of 0.14 m3, and a valley electricity storage ratio of 1 has the best-combined performance and cost of the system.
Optimal Design of Biomass-centered Integrated Energy System under Uncertainty
Authors: Zhao Pengxiang , Zhu Jianjun , Zhang Yanru , Wang Qiang , Yang Xian , Cong Lin 
Published: May 2023

Abstract
To achieve the goal of carbon peak and carbon neutrality, China is actively promoting the production and consumption of clean and sustainable energy such as biomass. The optimization of integrated energy system (IES) configuration including biomass has gradually become a research hotspot. In this paper, aiming at the configuration optimization problem of biomass-centered IES under uncertainty, considering the uncertainty of user load and energy price, the maximum annual profit is selected as the objective function, and the configuration planning model of IES under uncertainty is established. Then, the artificial bee colony (ABC) algorithm is used to solve the optimization model, and the influence of uncertainty factors on the configuration optimization of IES is explored. The results of the example show that with the two-stage stochastic programming model used to deal with the uncertainty factors in the IES, the equipment configuration capacity and operating parameters in the system are changed compared with the results of the deterministic conditions. It can overcome the problem of over-optimism in the deterministic condition and reduce the system operation risk due to the random variation of uncertainty factors.
Research on Key Technology of 110/220 kV High Voltage Smooth Aluminum Sheath Cable
Authors: Ye Haoqiang , Fang Jiong , Wang Chengzhu , Han Qifang , Hu Menglong , Yue Zhenguo 
Published: May 2023

Abstract
In order to solve the problem of frequent body and buffer layer discharge ablation of Corrugated Aluminum Sheath XLPE cable in China, in this paper, the discharging principle and influencing factors caused by corrugated aluminum sheathed cables are analyzed, and a smooth aluminum sheathed cable design scheme to slow down the discharge ablation phenomenon is proposed. Furthermore, the production process of smooth aluminum sheath high voltage cable is deeply studied, and the integrated new process production line is designed. The nano-mold drawing process of the aluminum sheath (Compact Wheel Diameter Reduction), the multi-layer co-extrusion process of the anti-corrosion layer (Hot Melt Adhesive), the outer sheath and the conductive layer are developed, the buffer layer structure is optimized, and a number of technologies such as wire cloth are added. Finally, the application and technical effect of the smooth aluminum sheath are analyzed, which provides a reference for the production and practical engineering application of the smooth aluminum sheath technology.
Static Test Verification on Retrofitting Method for On-service Transmission Tower
Authors: Wu Huifeng , Huang Zenghao , Wu Lilin , Liao Yongli , Li Yue 
Published: May 2023

Abstract
Retrofitting methods for transmission tower on-service conditions should avoid punching and welding. This paper presents a non-destructive retrofitting method, the T-shaped composite angles method, to meet the demand. The original angle was combined with retrofitting components by V-shaped clamps. Both numerical analysis and static loading test were carried out to verify the effectiveness of this retrofitting method. The test results show that compared with the lateral stiffness of the original transmission tower segment, the stiffness of the reinforced one increased. The load-bearing capacity of the reinforced transmission tower segment almost doubled that before the reinforcement. The proposed retrofitting method is non-destructive and effective.