bluuebunny/crossref_metadata_2025_split huggingface dataset:
Muscle Strength Deficit though Intact Proprioception after Lateral Ankle Sprain without Persistent Instability
Authors: Madkhali Adel M. , Nuhmani Shibili 
Published: January 2021

Abstract
Background Lateral ankle sprain is one of the most common injuries in competitive sports. Previous studies which investigated muscle strength and proprioception (joint position sense) focused on subjects who sustained ankle sprain with instability. It is also important to investigate strength deficits and proprioception in subjects with a history of ankle sprain without instability. Therefore the aim of the study is to investigate proprioception and muscle strength deficits in athletes with lateral ankle sprain.
Methods Twenty-four male athletes with a history of lateral ankle sprain and 24 age-matched controls (mean age of 22.42±4.13 years, mean height of 173±5.73 cm, and mean weight of 71.20±7.55 Kg) participated in this cross-sectional study. Peak torque and peak torque ratio at speeds of 30 and 120°/s for concentric and eccentric ankle inversion/eversion were evaluated using an isokinetic dynamometer. The joint position sense of the ankle joint was evaluated using an active angle reproduction test.
Result Peak torque produced was significantly less in subjects with history of ankle sprain in concentric inversion 30°/s(t(47)=4.11; p=0.000, Cohen’s d=1.29), concentric inversion 120°/s (t(47)=3.01; p=0.006, Cohen’s d=1.13), concentric eversion 30°/s (t(47)=3.85; p=0.001, Cohen’s d=1.24) and concentric eversion 120°/s (t(47)=3.15; p=0.005, Cohen’s d=1.09). At the same time there was no significant difference observed in eccentric eversion peak torque in both speed (eccentric eversion 30°/s p=0.079; eccentric eversion 120°/s p=0.867) between experimental and control group. No significant difference was found in the joint position sense in the maximal active inversion −5° position (p=0.312) and the 15° inversion position (P=0.386) between both group.
Conclusion The study’s results reported a significantly less peak torque of invertors and evertors during concentric movements in athletes with history of ankle sprain. At the same time, no significant difference reported in the evertor/invertor peak torque ratio, and active joint position sense between the 2 groups.
Allergische Reaktionen auf COVID-19-Impfungen – Was HNO-Ärzte wissen sollten – Teil 1: Allgemeine Aspekte von Allergien auf Impfstoffe, immunologische Grundlagen von Allergien auf Impfstoffe, Immunmechanismen von allergischen und pseudoallergischen Reaktionen, Teil 2: Charakteristiken der mRNA-Impfstoffe BNT162b2 und mRNA-1273 zur Prophylaxe von COVID-19 und assoziierte Immunphänomene, Teil 3: Praktische Aspekte der Prophylaxe, Diagnostik und Therapie von Allergien auf COVID-19-Impfstoffe
Authors: Klimek L. , Chaker A. M , Cuevas M. 
Published: January 2021

ZusammenfassungMit BNT162b2 (zugelassen am 27.12.2020) und mRNA-1273 (zugelassen am 06.01.2021) wurden erstmalig RNA-Impfstoffe zur breiten Anwendung in einem beschleunigten Verfahren in der EU bedingt zugelassen und stehen nun zur effektiven Bekämpfung der durch SARS-CoV-2 verursachten Pandemie in der EU zur Verfügung. Einzelne Berichte über Anaphylaxien nach Impfung zunächst in Großbritannien sowie die Identifikation von PEGs (Polyethylenglykole) als mögliche Auslöser der Reaktionen als bisher wenig im allergologischen Fokus stehende Gruppe von Zusatzstoffen führten zur Verunsicherung von Ärzten und Patienten. Ziel dieser Artikelserie ist die Zusammenfassung bisher bekannter pathophysiologischer und klinischer Erkenntnisse (Teil 1), der Charakteristiken der Impfstoffe (Teil 2) sowie praktische Aspekte zur Erkennung und Therapie möglicher Allergien gegen Bestandteile der mRNA-COVID-19-Impfstoffe (Teil 3).
Protective Effects of Statins Administration in European and North American Patients Infected with COVID-19: A Meta-Analysis
Authors: Pucci Mairi , Onorato Diletta , Carpene Giovanni , Henry Brandon Michael , Sanchis-Gomar Fabian , Lippi Giuseppe 
Published: January 2021

AbstractSevere acute respiratory syndrome coronavirus 2 has spread rapidly throughout the world, becoming an overwhelming global health emergency. The array of injuries caused by this virus is broad and not limited to the respiratory system, but encompassing also extensive endothelial and systemic tissue damage. Since statins effectively improve endothelial function, these drugs may have beneficial effects in patients with coronavirus disease 2019 (COVID-19). Therefore, this investigation aimed to provide an updated overview on the interplay between statins and COVID-19, with particular focus on their potentially protective role against progression toward severe or critical illness and death. A systematic electronic search was performed in Scopus and PubMed up to present time. Data on statins use and COVID-19 outcomes especially in studies performed in Europe and North America were extracted and pooled. A total of seven studies met our inclusion criteria, totaling 2,398 patients (1,075 taking statins, i.e., 44.8%). Overall, statin usage in Western patients hospitalized with COVID-19 was associated with nearly 40% lower odds of progressing toward severe illness or death (odds ratio: 0.59; 95% confidence interval: 0.35–0.99). After excluding studies in which statin therapy was started during hospital admission, the beneficial effect of these drugs was magnified (odds ratio: 0.51; 95% confidence interval: 0.41–0.64). In conclusion, although randomized trials would be necessary to confirm these preliminary findings, current evidence would support a favorable effect of statins as adjuvant therapy in patients with COVID-19. Irrespective of these considerations, suspension of statin therapy seems highly unadvisable in COVID-19 patients.
Ode to the Anesthesiologist Profectus
Authors: Magoon Rohan , Shri Iti 
Published: January 2021

AbstractAs the Corona pandemic continues to challenge the medical fraternity, the anesthesiologists have emerged as an integral part of the system, right from elucidating the pathophysiology of the Coronavirus to the treatment and resilience in the face of all the challenges thrown. This personal perspective is a tribute to the anesthesiologist’s progress from behind the scenes to an epidemiologist, intensivist, and Corona warrior.
Ascariasis and Cardiac Surgery: A Case Report
Authors: Singh Ajmer , Mahavar Ravi K , Mehta Yatin 
Published: January 2021

AbstractAscariasis is a common helminthic infection, particularly in the tropical countries. We describe a case of eosinophilia who underwent coronary artery bypass graft (CABG) surgery. Postoperatively, he was found to have ascaris lumbricoides in the oral cavity. Timely detection and removal of the worm prevented the possible complications such as airway obstruction, bronchospasm, lung collapse, or intestinal obstruction. The case emphasizes the importance of considering parasitic infection as a differential diagnosis in patients presenting with eosinophilia for elective surgery.
Highly Performances Blue Thermally Activated Delayed Fluorescence Devices and Efficient Host-Emitter Interactions
Authors: Zhu Qi , Zhao Xuesen , Liu Weiqiang , Cui Yingjie , Duanmu Qingduo 
Published: January 2021

Abstract
The influence of host-emitter interactions on electroluminescent (EL) performances of thermally activated delayed fluorescence (TADF) emitter had not explored in detail. In this study, by doping DMTDAc into host materials with different polarity and energy levels as emitting layer, we demonstrated that the choice of host can be able to greatly impact on the EL performances. Finally, we found the variation of device performances was mainly dominated by energy transfer and charge trapping progresses in emitting layers, and stable blue TADF device with maximum efficiencies and brightness of 23.74 cd/A, 24.05 lm/W, 21.9% and 5695 cd/m2, was obtained.
Density Region of Low-Threshold Parametric Decay Instabilities in Electron Cyclotron Resonance Heating Experiments in Tokamak
Authors: Yao Kun 
Published: January 2021

Abstract
The density conditions under which low-threshold parametric decay instabilities occur are analyzed by a physical model. Calculations show that low-threshold parametric decay instabilities occur in the density region. Magnetic field effects on the density region are analyzed. The maximum width of the density region is found. The plasma temperature has little effect on the density region. In order to avoid the low-threshold parametric decay instabilities, the daughter wave’s frequency must be far from the UH frequency inside magnetic island. It’s the key to control the magnetic field inside the magnetic island.
Review of Radon and Its Progeny Measurement Technology in Environmental Gamma Measurement
Authors: Zeng Chenhao , Zhou Jinge , Lai Wanchang , Feng Xiaojie , Chen Jiehao , Yu Yongping 
Published: January 2021

Abstract
The contribution of radon and its progeny to environmental gamma dose should not be ignored. In recent years, a large number of scholars all over the world have studied the migration behavior of radon and its progeny in the environment, and analyzed their impact on environmental gamma dose. Especially in uranium (thorium) bearing mining areas and other special areas, the influence of radon and its progeny is more prominent, which poses an important challenge to radiation monitoring. This paper summarizes the analysis and processing technology of radon and its progeny in environmental gamma monitoring, and puts forward the research trend and development direction of radon and its progeny analysis technology.
Fast Calculation of Mont Carlo Ion Transport Code
Authors: Qi Meiling , Yang Qiong , Chen Xiaolong , Yang Jizheng Duanand Lei 
Published: January 2021

Abstract
In this work, a Monte Carlo code has been developed for quick simulation of carbon ion bombardment in materials. This program realizes the calculation of the displacement damage and ionization of particle (<10MeV/amu) in materials. In addition, high energy carbon (<500MeV/amu) transport calculation is developed to simulate the ionization dose in water. The GPU parallel algorithm is adopted to speed up the program. Subsequently, the vacancies and ionization of target materials induced by various energy carbon iron were simulated and compared with the SRIM2013. Dose depth distributions of different energy carbon in water were simulated and compared with GSI experimental data. Results of simulation are consonant well with SRIM2013 and experimental data. It achieves significant speed-up ratio in different GPU devices.
A Low-Frequency Sound Absorption Device Fitting for Power Transformation and Distribution Room
Authors: Wu Xiaowen , Lu Ling , Xie Ziyin , Kim Hakbong 
Published: January 2021

Abstract
Aiming at the low-frequency noise in power transformation and distribution rooms in residential areas, a sound absorption device which can effectively reduce the low-frequency noise of 100 Hz was proposed. Through an efficient and integrated design, the resonance frequency of the device, the frequency of bending vibration from S-shaped tubes when anastomosis effects ocurred, the frequency of Helmholtz resonant cavities in the S-shaped tubes, and the frequency of the slit resonant sound-absorbing structure consisting of the splits between S-shaped tubes and the cavity behind them were all designed at 100 Hz. Thus, the sound energy of 100 Hz in the power transformation and distribution rooms could be absorbed efficiently. Through sound field simulation, the acoustical performance of S-shaped tubes was further analyzed, and the wave peak of S-shaped tube was optimized to effectively enhance the sound absorption coefficient. The results showed that the device of sound absorption had a good acoustical performance.
Numerical Simulation of Gas-Liquid-Solid Three Phase in Bubble Column
Authors: Wang Le , Cao Zhourong , Cai Hulin , Wang Yifei 
Published: January 2021

Abstract
Based on the Euler-Euler-Lagrangian framework, the Euler-Euler two-fluid model coupled with population balance model (PBM) and the Discrete Phase Model (DPM) model were used to simulate the gas-liquid-solid three phase dynamic behavior in the laboratory bubble column. The non-Newtonian properties of the liquid phase was considered in the numerical simulation, and the cases with different numerical models were discussed. It is found that the peak value velocity of liquid phase decrease due to the solid phase. The gas holdup remains almost the same in different cases with or without solid phase. There is no obvious periodic oscillation plume in non-Newtonian fluid. The interaction between solid and liquid has an effect on the flow field, gas distribution and viscosity distribution. The flow field calculated by CFD+PBM+DPM model forms three obvious vortices, while the symmetrical vortex is formed by CFD+PBM+DPM model, which is located on both sides of the bubble column. The distribution of dynamic viscosity simulated by different numerical models is basically the same in vary cases.
Universality classes and machine learning
Authors: Chertenkov Vladislav , Shchur Lev 
Published: January 2021

Abstract
We formulate the problem of the universality class investigation using machine learning. We chose an example of the universality class of the two-dimensional 4-state Potts model. There are four known models within the universality class – the 4-state Potts model, the Baxter-Wu model, the Ashkin-Teller model, and the Turban model. All four of them together are not equivalent in the Hamiltonian representation, in the lattice symmetry, and the layout of spins on the lattice. We generate statistically independent datasets for all models using the same Monte Carlo technique. The machine learning methods will be used for the analysis of the universality class of models based on generated datasets.
Vortex annealing of structural disorder in non-equilibrium critical relaxation of the two-dimensional site-diluted XY-model with generalized model of disorder
Authors: Popova Anna P , Popov Ivan S , Prudnikov Pavel V 
Published: January 2021

Abstract
The work is devoted to investigation of non-equilibrium vortex annealing of structural disorder in the two-dimensional site-diluted XY-model. The system incorporates mobile and fixed structure defects, with concentrations c
(a) and c
(q) correspondingly. Limiting cases c
(a) ≃ c
(q) and c
(a) ≪ c
(q) were considered. Dynamic clusterization of mobile defects was investigated by analysis of time dependences of size of the largest clusters and of averaged size of clusters. A comparison of the results with behavior of the XY-model with mobile defects only, revealed a qualitative change in non-equilibrium critical relaxation in case of c
(a) ≪ c
(q). That may be related to considerable slowing down of non-equilibrium vortex dynamics due to vortex pinning on fixed defects and attraction of percolation fixed point.
Graphical interactive user interface system for a stationary trainer to perform lower limb rehabilitation tasks
Authors: Mohan Santhakumar , Sunilkumar Parvathi , Khawase Chaitanya , Rybak Larisa 
Published: January 2021

Abstract
The graphical interactive user interface system of a stationary trainer for performing lower-limb rehabilitation tasks is presented in this article. The stationary trainer considered here for the interactive system development is based on a foot-plate operating system. The foot-plate is an end-effector of a parallel Cartesian manipulator. The interactive system primarily designed for the therapeutic tasks associated with passive range of motion (PROM) of the lower limbs. Further, the interactive system concentrated on the hip and knee joint motion therapies which include flexion/extension of knee and hip as well as abduction/adduction of hip. Various clinically suggested motions along with their working nature are designed in the interactive user interface. The suggested interface would generate the system settings (the various system parameters to be fixed during the real-time training) are generated based on the patient’s physical parameters such as limb length, patient’s weight, height, etc. The interactive simulator of the stationary trainer is demonstrated and verified using computer-based numerical simulations.
Semi-Lagrangian shallow water equations solver on the cubed-sphere grid as a prototype of new-generation global atmospheric model
Authors: Shashkin V V , Goyman G S 
Published: January 2021

Abstract
Next generation weather prediction atmospheric models will have horizontal resolution of about 3-5 km. The problem dimension will be 1010. One will need to use efficiently 104-105 computational cores to make a practical operational forecast. This leads to the need for the deep revision of numerical methods and algorithms used in atmospheric models. One of the problems to be solved is the horizontal discretization of atmospheric dynamics equations on the quasi-uniform spherical grids. This problem can be investigated using shallow water model that is much computationally cheaper than the use of full atmosphere model. We are developing an atmospheric dynamics solver for the next generation numerical weather prediction model at the Institute of Numerical Mathematics and Hydrometeorological center of Russia. Within this work, the solver for the shallow water equations using gnomonic cubed-sphere grid has been developed. The solver is verified using standard shallow water test cases. The accuracy of the presented solver is analysed. The good agreement to the reference solutions is achieved, when 4-th order spatial approximations are used.
Development of the global multiscale atmosphere model: computational aspects
Authors: Tolstykh M A , Goyman G S , Fadeev R Y , Travova S V , Shashkin V V 
Published: January 2021

Abstract
The global atmosphere model SL-AV is applied for operational numerical weather prediction in Russia at the time scales from days to month and also for simulation of modern climate. It is important to achieve the best wall-clock time for all of the model applications with different grid sizes. In this paper, we analyse the effect of switching computations and parallel exchanges from double to single precision in the semi-Lagrangian advection and elliptic equations solver blocks on the quality of the medium-range forecast and evaluate the change in wall-clock time. We have also optimized OpenMP parallelization in the computations of the right-hand sides of meteorological prognostic equations. The effect of these changes is studied for SL-AV model versions with different resolutions.
The corrosion analysis and prevention of secondary cable joints used in outdoor terminal boxes of substation in humid environment
Authors: Hu Yujing , Hu Wei , Yang Wen , Wu Junjie , Chang Yan , Yin Fucheng , Xie Yi 
Published: January 2021

Abstract
The reasons for corrosion cracking of secondary cable joints used in outdoor terminal boxes of a 220 kV substation in humid environment were investigated by scanning electron microscopy (SEM), X-ray diffractometer (XRD), infrared spectroscopy (IR) and ion dissolution test. According to the results of ion dissolution test, polyvinyl chlorid (PVC) insulated and sheathed cable material would precipitate chloride (Cl) ions under humid environment and at a certain temperature, which leads to accelerated corrosion cracking of the exposed copper core wires of secondary cable. In addition, the newly supplied PVC and cross-linked polyethylene (XLPE) materials without Cl precipitation under the same experimental conditions, indicating that PVC materials would precipitate Cl after reaching a service time threshold. Therefore, it is recommended that XLPE used for the insulation materials and accessories of secondary cable in outdoor terminal box of substation, as well as humidity in the terminal box should be controlled.
Ground Current Suppression for Grid Connected Transformerless Photovoltaic Inverter with Filter Capacitor
Authors: Su Na 
Published: January 2021

Abstract
The full-bridge inverter with unipolar PWM (UPWM) or hybrid PWM (HPWM) has higher efficiency and lower filtering requirement. However, when it is used for grid-connected transformerless photovoltaic system, the ground current may be high due to the parasitic capacitors and high frequency common-mode voltage. In this paper, the output filter capacitor is proposed to suppress the ground current. In this method, the output filter capacitor is parallelled with the parasitic capacitors. The analytical method is established to calculate the ground current. The effect of the novel method under different modulation technique is studied. Efficiency estimation is done for comparison of different topologies. Finally, the validity of the proposed method is verified by simulation and experimental results.
Application Research of Blockchain Technology in Energy Internet
Authors: Pang Bo , Song Li , Liu Dunnan , Li Genzhu 
Published: January 2021

Abstract
At present, the application of blockchain in the energy field has begun to take shape. The decentralization, cooperative autonomy, marketization and intelligence of blockchain technology coincide with the concept of energy Internet. Some high-tech companies in Europe and the United States have begun to apply blockchain technology to the energy sector. Based on the basic research of blockchain technology and energy Internet coupling, this paper deeply analyzes the application of blockchain technology in energy internet, and analyzes the business model of energy blockchain. The aim is to lay the foundation for the transformation and upgrading of energy companies and the early deployment of relevant fields.
Research on the Evaluation of Construction Regional Development Level Based on the Whole Industry Chain
Authors: Zhao Likun , Li Dong 
Published: January 2021

Abstract
From the perspective of the whole industry chain, this article divides the construction industry from the construction process, construction products, and participants into the whole process, all-round, and full-staff principles, and divides the construction industry of each province into upstream industries and midstream industries based on all links of the entire industry chain. This paper constructs the evaluation index system of three dimensions of downstream industry. Based on valid statistical data, the development level of the construction industry in 28 provinces in my country in 2019 was analyzed based on combination weighting and principal component analysis, and the development level of the construction industry in each region was ranked. The results show that there are obvious regional differences in the development of construction regions. The development level of the construction industry in the eastern and coastal provinces and cities is significantly better than that in the western and central provinces and cities, which is consistent with the status and verifies the validity of the model.
Effects of different light quality ratio on growth and photosynthesis capacity in pakchoi under excess nitrate stress
Authors: Li Zelin , Chen Guangyou , Gao Fuqiang , Luo Jiaping , Li Chunwen , He Zhongqun , Zhou Xiaoting 
Published: January 2021

Abstract
In this study, light-emitting diode (LED) was used as light source to cultivate pakchoi in hydroponics. The effects of red light and far red light ratio (R: FR) of 0.7, 1.0 and 4.2(CK) on the growth and photosynthetic characteristics of pakchoi under different nitrate stress concentrations were studied. The results showed that the growth indexes, gas exchange parameters (except intercellular CO2 concentration) of pakchoi decreased significantly under excess nitrate stress. And the growth of pakchoi was more inhibited under high nitrate stress concentration. Under low R: FR ratio, the growth indexes and net photosynthetic rate of pakchoi increased significantly, while the intercellular CO2 concentration decreased significantly, and the effect was achieved when R:FR=0.7. Therefore, reducing R: FR ratio can alleviate the inhibition of excess nitrate stress on the growth and improve the yield of pakchoi.