mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Substrate angle-induced fully c-axis orientation of AlN films deposited by off-normal DC sputtering method

A highly c-axis-oriented aluminum nitride (AlN) thin film with smooth and crack-free surface was fabricated by an off-normal direct current (DC) sputtering method in a pure nitrogen atmosphere, in which the rotatable substrate holder positioned in the middle of four side targets was a key approach to guarantee the grain growth with no tilt. The detailed effects of substrate angle on the c-axis orientation of AlN films were investigated by varying the substrate angle from 0° to 90°. Moreover, theoretical analysis and Monte Carlo (MC) simulation reveal that the oblique or even vertical angle could improve the lateral kinetic energy of sputtered atoms deposited on the growing film. A variety of examining techniques including X-ray diffraction (XRD), (002) peak rocking curve, scanning electron microscopy (SEM) were conducted to evaluate the angle dependence on the crystallographic orientation. These test results indicate that larger substrate angle is beneficial to the (002) growth of AlN thin film, and a fully c-axis textured AlN thin film is obtained at 90° with small surface roughness (Ra) of 3.32 nm.
Facile synthesis of hollow Cu_3P for sodium-ion batteries anode

Combining metal to form metal phosphide is a promising strategy to address the fast capacity decay of P rooted from its low electronic conductivity and large volume changes upon cycling. Cu_3P, which possesses a high theoretical gravimetric and volumetric capacity of 363 mAh·g~(-1) and 1028 Ah·L~(-1) and reasonable volume expansion of 156% during sodiation, was investigated as anode material in SIBs. Hollow-structured Cu_3P electrode delivers an initial de-sodiation capacity of ~ 159.0 mAh·g~(-1) with high capacity retention of ~ 85.1% over 50 cycles at 0.2C rate and exhibits good rate performance, retaining 70% of the capacity when the current density increases from 0.2C to 1.6C. A 3 V-class full cell consisting of P2-Na_(2/3)Ni_(1/3)Mn_(1/2)Ti_(1/6)O_2 cathode and Cu_3P anode was also assembled, which could achieve an energy density of ~ 189.3 Wh·kg~(-1) (based on the mass of both electrode materials) and average discharge voltage of ~ 2.91 V when cycled in 1.0-4.3 V at 0.1C.
Agitation drying synthesis of porous carbon supported Li_3VO_4 as advanced anode material for lithium-ion batteries

Li_3VO_4 has been considered as a promising insertion-type anode for lithium-ion batteries due to its high theoretical specific capacity and suitable operating voltage platform. However, this promising anode still suffers from poor electrical conductivity. To address this issue, herein, a porous carbon supported Li_3VO_4 composites (Li_3VO_4/C) via a facile agitation-drying method combined with subsequent calcination is reported, in which Ketjen black carbon with high porosity, easy dispersion and excellent conductivity can serve as one of carbon sources. The Li_3VO_4/C composite prepared at 700 ℃ with a carbon content of ~ 10% exhibits the optimized structure. The void space of the composite accommodates the volume changes during the charge/discharge process. Meanwhile, the carbon shell serves as a conductive skeleton to provide bi-continuous Li ions and electrons pathways. Electrochemical results reveal that the composite delivers a high initial discharge capacity of 572 mAh·g~(-1) and maintains a capacity of 442.9 mAh·g~(-1) after 100 cycles at 100 mA·g~(-1). Even at a high current density of 2 A·g~(-1), a considerable capacity of 243.8 mAh·g~(-1) can still be obtained. This work provides a promising approach for the practical application of Li_3VO_4 as anode material for LIBs.
In situ formed three-dimensional (3D) lithium-boron (Li-B) alloy as a potential anode for next-generation lithium batteries

The practical application of the lithium anode in lithium metal batteries (LMBs) has been hindered by the uncontrollable growth of lithium dendrite and the high volumetric change during cycling. Herein, the in situ formed three-dimensional (3D) lithium-boron (Li-B) alloy is suggested as an excellent alternative to the Li metal, in which the 3D LiB skeleton can mitigate the growth of Li dendrites and volumetric change. In this study, the Li-B alloy anodes with different B contents were manufactured by high-temperature melting. It was found that the boron content had a significant effect on the electrochemical performance of the Li-B alloy. The Li-B alloy with the least B content (10 wt%, 10LiB) demonstrated the lowest overpotential of 0.0852 V after 300 h and the lowest interface resistance. However, the full cell with 15LiB as the anode displayed the best cycling performance of 115 mAh·g~(-1) after 100 cycles with a columbic efficiency greater than 97%. The obtained results suggest that the in situ formed three-dimensional Li-B alloy anode can be an excellent alternative to the Li anode via tuning B contents for next-generation high energy density LMBs.
Model Tests Research on A Float-Over Barge in Shallow Water Under the Undocking Conditions

In this study, the Jinzhou 9-3 CEPD float-over installation project was investigated. During the undocking condition,the water depth of the motion path of the working barge gradually changed from 10.31 m to 9.41 m. The undocking clearance of the HYSY 228 is smaller than 1 m;therefore, the barge shows highly nonlinear hydrodynamic characteristics, and it is difficult to be accurately simulated by numerical analysis. Thus, it is necessary to obtain the hydrodynamic characteristics and laws of the float-over barge at different water depths by using tank model test, to provide some reference and guidance for float-over operations in shallow water.
Viscoelastic characterization and prediction of a wormlike micellar solution

In the present paper,a structure-based viscoelastic model is employed to characterize and predict the viscoelastic properties of a wormlike micellar solution at 20 °C.Considering the effect of shear rate on linear viscoelastic property,a structural parameter f is obtained.Meanwhile,another structural parameter ζ is determined when the effects of time and shear rate are considered simultaneously.Both structural parameters are calculated by using linear interpolation method.The startup experiment can be described well by the model.The prediction on the shear stress in the ramping-up region of the hysteresis loop experiment shows an apparent relation between the rheological behaviors in the startup experiment and those in the hysteresis loop experiment.For the hysteresis loop experiment with 30 s time interval,the defect of the calculation in 0.001-0.01 s~(-1) is due to the lack of the ramping-down history effect.In addition,the model can improve completeness of perimental data used for characterizing rheological property.
CuI/Nylon Membrane Hybrid Film with Large Seebeck Effect

Room-temperature thermoelectric materials are important for converting heat into electrical energy. As a widebandgap semiconductor material, CuI has the characteristics of non-toxicity, low cost, and environmental friendliness. In this work, CuI powder was synthesized by a wet chemical method, then CuI film was formed by vacuum assisted filtration of the CuI powder on a porous nylon membrane, followed by hot pressing. The film exhibits a large Seebeck coefficient of 600 μV·K~(–1) at room temperature. In addition, the film also shows good flexibility (∼95% retention of the electrical conductivity after being bent along a rod with a radius of 4mm for 1000 times). A finger touch test on a single-leg TE module indicates that a voltage of 0.9mV was immediately generated within 0.5 s from a temperature difference of 4K between a finger and the environment, suggesting the potential application in wearable thermal sensors.
分侧肾上腺静脉取血致肾上腺血肿1例

回顾本例PA患者诊疗过程,证实AVS对于PA的分侧诊断具有关键性作用,但是该技术存在血管并发症的风险,警示我们在取血术中需小心轻柔操作,切忌过猛、过快推注造影剂,并尽可能避免导管过深插入静脉。虽然AH一般预后良好,但是增加了患者的痛苦、住院时间和费用,因此条件允许时,可在术前完善双期CT、螺旋CT等影像学检查,以提供肾上腺静脉开口位置、成角等信息,有助于减少术中对右侧肾上腺静脉的探查次数、降低血管损伤风险[13];此外,术中采取同轴导丝技术有助于稳固导管与血管的位置、减少患者呼吸运动对导管的影响以及导管与静脉开口接触的时间[14],也有利于减少并发症的发生。
知信行是高血压防控的支点

高血压是最常见的慢性非传染性、全球疾病负担最重的疾病,也是我国公共卫生管理主要负担。2015年中国年龄>18岁人群中高血压患者2.445亿例[1],预计2025年,中国高血压人群将达3亿例。目前,我国高血压“三率”仍不容乐观,冠状动脉粥样硬化性心脏病(冠心病)医疗结果评价和临床转化研究(patientcentered evaluative assessment of cardiac events, ChinaPEACE)(2014-2017年)对年龄35~75岁人群1 738 886人进行调查,标化性别和年龄后,高血压知晓、治疗和控制率分别仅为36.0%、22.9%和5.7%[2]。
RSNA2021骨骼肌肉影像学

2021年RSNA年会关于肌骨关节影像研究方面的科学报告共110余篇,涉及内容主要包括肌肉骨骼关节疾病的定性及定量分析、新技术的应用、深度学习及影像组学的发展,本文将主要按照部位及特殊成像、后处理技术进行描述。
Sn Alloy and Graphite Addition to Enhance Initial Coulombic Efficiency and Cycling Stability of SiO Anodes for Li-Ion Batteries

Silicon monoxide (SiO) has aroused increased attention as one of the most promising anodes for high-energy density Li-ion batteries. To enhance the initial Coulombic efficiencies (ICE) and cycle stability of SiO-based anodes, a new facile composition and electrode design strategy have been adapted to fabricate a SiO-Sn-Co/graphite (G) anode. It achieves a unique structure where tiny milled SiO-Sn-Co particles are dispersed among two graphite layers. In this hybrid electrode, Sn-Co alloys promoted Li~+ extraction kinetics, and the holistic reversibility of SiO and graphite enhanced the electrical conductivity. The SiO-Sn-Co/G electrode delivered an average ICE of 77.6% and a reversible capacity of 640 mAh g~(-1) at 800 mA g~(-1), and the capacity retention was above 98% after 100 cycles, which was much higher than that of the SiO with an ICE of 55.3% and a capacity retention of 50%. These results indicated that this was reliable method to improve the reversibility and cycle ability of the SiO anode. Furthermore, based on its easy and feasible fabrication process, it may provide a suitable choice to combine other alloy anodes with the graphite anode.
Gas Generation Mechanism in Li-Metal Batteries

Gas generation induced by parasitic reactions in lithium-metal batteries (LMB) has been regarded as one of the fundamental barriers to the reversibility of this battery chemistry, which occurs via the complex interplays among electrolytes, cathode, anode, and the decomposition species that travel across the cell. In this work, a novel in situ differential electrochemical mass spectrometry is constructed to differentiate the speciation and source of each gas product generated either during cycling or during storage in the presence of cathode chemistries of varying structure and nickel contents. It unambiguously excludes the trace moisture in electrolyte as the major source of hydrogen and convincingly identifies the layer-structured NCM cathode material as the source of instability that releases active oxygen from the lattice at high voltages when NCM experiences H2 → H3 phase transition, which in turn reacts with carbonate solvents, producing both CO_2 and proton at the cathode side. Such proton in solvated state travels across the cell and becomes the main source for hydrogen generated at the anode side. Mechanisms are proposed to account for these irreversible reactions, and two electrolyte additives based on phosphate structure are adopted to mitigate the gas generation based on the understanding of the above decomposition chemistries.
A Direct Liquid Fuel Cell with High Power Density Using Reduced Phosphotungstic Acid as Redox Fuel

Direct liquid fuel cells (DLFCs) are proposed to address the problems of high cost and complex storage and transportation of hydrogen in traditional hydrogen-oxygen proton exchange membrane fuel cells. However, present fuels of organic small molecules used in DLFCs are restricted to problems of sluggish electrochemical kinetics and easily poisoning of precious metal catalysts. Herein, we demonstrate reduced phosphotungstic acid as a liquid fuel for DLFCs based on its advantages of high chemical and electrochemical stability, high electrochemical activity on common carbon material electrodes, and low permeability through proton exchange membranes. The application of phosphotungstic acid fuel effectively solves the problems of high cost of anode catalysts and serious fuel permeation loss in traditional DLFCs. A phosphotungstic acid fuel cell achieves a peak power density of 466 mW cm~(-2) at a cell voltage of 0.42 V and good stability at current densities in the range from 20 to 200 mA cm~(-2).
Directional Oxygen Functionalization by Defect in Different Metamorphic-Grade Coal-Derived Carbon Materials for Sodium Storage

As the limiting factor for an energy storage technique from lab-scale to industrial-scale, cost means not only the price of raw materials but also the simplicity of processing technics. In this work, the oxygen functionalized carbon materials were obtained from three representative different metamorphic-grade coals, that is, lignite, bitumite, anthracite. Oxygen functional groups like quinones, carboxylic anhydrides, and lactones are easier to form near defects according to the thermogravimetric-mass spectrometry measurements and density functional theory calculation. Considering the highest amount of defects and C=O contained functional groups, the low metamorphic-grade lignite derived carbon exhibits a reversible capacity of 259.7 mA h g~(-1) after 50 cycles at 0.03 A g~(-1), best among these micron sized coal-based carbons. The surface active sites contribute highly stable and majority of sodium storage capacity evidenced by in situ Raman spectra and cyclic voltammetry curves at different scan rates. The coal-based carbon materials in this work offer options for industrial applications of sodium-ion battery anode materials.
CH_4 and CO_2 observations from a melting high mountain glacier, Laohugou Glacier No. 12

With global warming, glaciers in the high mountains of China are retreating rapidly. However, few data have been reported on whether greenhouse gases from these glaciers are released into the atmosphere or absorbed by glacial meltwater. In this study, we collected meltwater and ice samples from Laohugou Glacier No. 12 in western China and measured CH_4 and CO_2 concentrations. Meltwater from the glacier terminus was continually sampled between 3 and 5 August 2020 to measure CH_4 and CO_2 concentrations. The results demonstrated that meltwater is a source of CH_4 because the average saturations are over 100%. It could be concluded that CH_4 in the atmosphere can be released by glacial meltwater. However, the CO_2 saturations are various, and CO_2 fluxes exhibit positive (released CO_2) or negative (absorbed CO_2) values because the water and atmospheric conditions are variable. More importantly, the CH_4 and CO_2 concentrations were higher in meltwater samples from the glacier terminus than in samples from the surface ice (including an ice core) and a surface stream. Although the meltwater effect from the upper part of the glacier cannot be excluded, we speculated that subglacial drainage systems with an anaerobic environment may represent the CH_4 source, but it needs to be further investigated in the future. However, high mountain glaciers are currently ignored in global carbon budgets, and the increased melting of glaciers with global warming may accelerate the absorption of much more CO_2 and lead to the release of CH_4.
Thermoelectric transport in conductive poly(3,4-ethylenedioxythiophene)

Poly(3,4-ethylenedioxythiophene) (PEDOT) has proved its quite competitive thermoelectric properties in flexible electronics with its excellent electrical and mechanical properties. Since the early discovery of PEDOT, considerable experimental progress has been achieved in optimizing and improving the thermoelectric properties as a promising organic thermoelectric material (OTE). Among them, theoretical research has made significant contributions to its development. Here the basic physics of conductive PEDOT are reviewed based on the combination of theory and experiment. The purpose is to provide a new insight into the development of PEDOT, so as to effectively design and preparation of advanced thermoelectric PEDOT material in the future.
Bifurcation and dynamics in double-delayed Chua circuits with periodic perturbation

Rank-1 attractors play a vital role in biological systems and the circuit systems. In this paper, we consider a periodically kicked Chua model with two delays in a circuit system. We first analyze the local stability of the equilibria of the Chua system and obtain the existence conditions of supercritical Hopf bifurcations. Then, we derive some explicit formulas about Hopf bifurcation, which could help us find the form of Hopf bifurcation and the stability of bifurcating period solutions through the Hassards method. Also, we show that rank-1 chaos occurs when the Chua model with two delays undergoes a supercritical Hopf bifurcation and encounters a periodic kick, which shows the effect of two delays on the circuit system. Finally, we illustrate the theoretical analysis by simulations and try to explain the mechanism of delay in our system.
Modeling and character analyzing of multiple fractional-order memcapacitors in parallel connection

Recently, the memory elements-based circuits have been addressed frequently in the nonlinear circuit theory due to their unique behaviors. Thus, the modeling and characterizing of the mem-elements become essential. In this paper, the analysis of the multiple fractional-order voltage-controlled memcapacitors model in parallel connection is studied. Firstly, two fractional-order memcapacitors are connected in parallel, the equivalent model is derived, and the characteristic of the equivalent memcapacitor is analyzed in positive or negative connection. Then a new understanding manner according to different rate factor K and fractional order a is derived to explain the equivalent modeling structure conveniently. Additionally, the negative order appears, which is a consequence of the combination of memcapacitors in different directions. Meanwhile, the equivalent parallel memcapacitance has been drawn to determine that multiple fractional-order memcapacitors could be calculated as one composite memcapacitor. Thus, an arbitrary fractional-order equivalent memcapacitor could be constructed by multiple fractional-order memcapacitors.
Voltage-controllable magnetic skyrmion dynamics for spiking neuron device applications

Voltage-controlled magnetic skyrmions have attracted special attention because they satisfy the requirements for wellcontrolled high-efficiency and energy saving for future skyrmion-based neuron device applications. In this work, we propose a compact leaky-integrate-fire (LIF) spiking neuron device by using the voltage-driven skyrmion dynamics in a multiferroic nanodisk structure. The skyrmion dynamics is controlled by well tailoring voltage-induced piezostrains, where the skyrmion radius can be effectively modulated by applying the piezostrain pulses. Like the biological neuron, the proposed skyrmionic neuron will accumulate a membrane potential as skyrmion radius is varied by inputting the continuous piezostrain spikes, and the skyrmion radius will return to the initial state in the absence of piezostrain. Therefore, this skyrmion radius-based membrane potential will reach a definite threshold value by the strain stimuli and then reset by removing the stimuli. Such the LIF neuronal functionality and the behaviors of the proposed skyrmionic neuron device are elucidated through the micromagnetic simulation studies. Our results may benefit the utilization of skyrmionic neuron for constructing the future energy-efficient and voltage-tunable spiking neural networks.
Complex dynamic behaviors in hyperbolic-type memristor-based cellular neural network

This paper presents a new hyperbolic-type memristor model, whose frequency-dependent pinched hysteresis loops and equivalent circuit are tested by numerical simulations and analog integrated operational amplifier circuits. Based on the hyperbolic-type memristor model, we design a cellular neural network (CNN) with 3-neurons, whose characteristics are analyzed by bifurcations, basins of attraction, complexity analysis, and circuit simulations. We find that the memristive CNN can exhibit some complex dynamic behaviors, including multi-equilibrium points, state-dependent bifurcations, various coexisting chaotic and periodic attractors, and offset of the positions of attractors. By calculating the complexity of the memristor-based CNN system through the spectral entropy (SE) analysis, it can be seen that the complexity curve is consistent with the Lyapunov exponent spectrum, i.e., when the system is in the chaotic state, its SE complexity is higher, while when the system is in the periodic state, its SE complexity is lower. Finally, the realizability and chaotic characteristics of the memristive CNN system are verified by an analog circuit simulation experiment.
SU(3) spin-orbit coupled fermions in an optical lattice

We propose a scheme to realize the SU(3) spin-orbit coupled three-component fermions in an one-dimensional optical lattice. The topological properties of the single-particle Hamiltonian are studied by calculating the Berry phase, winding number and edge state. We also investigate the effects of the interaction on the ground-state topology of the system, and characterize the interaction-induced topological phase transitions, using a state-of-the-art density-matrix renormalizationgroup numerical method. Finally, we show the typical features of the emerging quantum phases, and map out the manybody phase diagram between the interaction and the Zeeman field. Our results establish a way for exploring novel quantum physics induced by the SOC with SU(N) symmetry.
High-confinement ultra-wideband bandpass filter using compact folded slotline spoof surface plasmon polaritons

A novel bandpass filter (BPF) based on spoof surface plasmon polaritons (SSPPs) using a compact folded slotline structure is proposed and experimentally demonstrated. The proposed novel SSPPs structure compared with a conventional plasmonic waveguide with slot line SSPPs unit structure at the same size, the considerable advantages in much lower asymptotic frequency with tight field confinement, which enable the proposed filter to be more miniaturization. A highefficient mode conversion structure is designed to transition from TE-mode to SSPPs-mode by gradient slotline lengths. The low-frequency stop-band can be committed with microstrip to slotline evolution on both sides of the dielectric, while the high-frequency cutoff band is realized by the proposed SSPPs structure. The influence of dispersion relation, electric field distribution, surface current, and structural parameters on the transmission characteristics of the proposed BPF are analyzed by finite difference time domain (FDTD). To validate the design concept, the prototype of the miniaturized SSPPs BPF has been manufactured and measured. The experimental results show high performance of the fabricated sample, in which the working in a range of 0.9 GHz-5.2 GHz with the relative bandwidth is 142%, the insertion loss less than 0.5 dB, the reflection coefficient less than ﹣10 dB, and the group delay is less than one ns. This works provides a mirror for realizing the miniaturization of waveguides, and the application and development of high-confinement SSPPs functional devices in the microwave and THz regimes.