关键词：
Introduction;Materials and Methods;Results;Discussion;Conclusion;Abstract;Data Availability;Additional Points;Ethical Approval;Consent;Disclosure;Conflicts of Interests;Authors’ Contributions;Funding Statement;Acknowledgements;Acknowledgments;Supplementary Materials;Reference;Dataset Description;Dataset Files;Abstract;Introduction;Introduction and Materials;Introduction and Methods;Materials;Materials and Methods;Methods;Results;Discussion;Results and Discussion;Discussion and Conclusion;Results and Conclusion;Conclusion;Conclusions;Data Availability;Additional Points;Ethical Approval;Consent;Disclosure;Conflicts of Interest;Authors’ Contributions;Funding Statement;Acknowledgements;Supplementary Materials;References;Appendix;Abbreviations;Preliminaries;Introduction and Preliminaries;Notation;Proof of Theorem;Proofs;Analysis of Results;Examples;Numerical Example;Applications;Numerical Simulation;Model;Model Formulation;Systematic Palaeontology;Nomenclatural Acts;Taxonomic Implications;Experimental;Synthesis;Overview;Characterization;Background;Experimental;Theories;Calculations;Model Verification;Model Implementation;Geographic location;Study Area;Geological setting;Data Collection;Field Testing;Data and Sampling;Dataset;Literature Review;Related Works;Related Work;System Model;Methods and Data;Experimental Results;Results and Analysis;Evaluation;Implementation;Case Presentation;Case Report;Search Terms;Case Description;Case Series;Background;Limitations;Additional Points;Case;Case 1;Case 2 etc.;Concern Details;Retraction Details;Copyright;Related Articles
摘要：
Network optimization is one of an effective ways to enhance the performance of an active distribution network (ADN). Aiming to improve the operation and power quality of the ADN considering time variations in load and renewable distributed generation (RDG) power, a multi-time period optimization model and its dynamic solution method are proposed. Considering the real time load demand and power generation variation of RDG versus input parameters like wind speed and solar irradiance, the time variation models of load and RDG power output are developed. The minimum power loss and maximum absorption of RDG power are served as the optimization indexes to construct the dynamic muti-time period optimization model. A hybrid particle swarm optimization (HPSO) algorithm is presented based on integer coding and random coding technique, which can find the most satisfactory solutions for the proposed dynamic model. Considering the time variation of load and RDG power of ADN, the optimal network structure and RDG allocation scheme at any time interval are determined by analyzing the obtained solutions. Additionally, two ADNs with time variation in load and RDG are tested to verify the effectiveness and superiority of the proposed dynamic optimization model and HPSO algorithm. The simulation results show that the proposed method can improve the operation performance and RDG optimal utilization of the ADNs through muti-time period dynamic optimization.
作者机构：
[Lei, Zeyong; Deng, Jian; Zhong, Lin] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Zhao, Guanrong; Lei, Zeyong; Deng, Jian] Univ South China, Sch Mech Engn, Hengyang 421001, Peoples R China.;[Lei, Jieheng] Univ South China, Sch Elect Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Zeyong Lei] S;School of Nuclear Science and Technology, University of South China, Hengyang 421001, China<&wdkj&>School of Mechanical Engineering, University of South China, Hengyang 421001, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
Aluminum alloys have been widely utilized in automobiles, aircraft, building structures, and high-speed railways industries due to their excellent structural and mechanical properties. Surface oxide film removal prior to aluminum alloy welding and old paint removal prior to repainting aluminum alloy surfaces are critical factors in ensuring the welding quality and service life of aluminum alloy products. Because of its unique advantages, such as environmental protection and precision control, laser-controlled cleaning has great application potential as a surface cleaning technology in removing oxide films and paint layers on aluminum alloy surfaces. In this paper, the mechanism of laser cleaning of oxide films and paint layers on aluminum alloy is discussed. Furthermore, the impact of various processing parameters such as laser beam power, energy density, scanning speed, and so on is analyzed in detail. After laser cleaning, the corrosion resistance, welding performance, adhesive performance, and other properties of the aluminum alloy are optimized. This paper also discusses several real-time detection technologies for laser cleaning. A summary and the development trend are provided at the end of the paper.
期刊：
Journal of Radioanalytical and Nuclear Chemistry,2022年331(11):4503-4511 ISSN：0236-5731
通讯作者：
Yong Liu<&wdkj&>Yifan Chen
作者机构：
[Lin, Dongying; Chen, Yifan; Dai, Xingwang; Chen, Zhangkai] Univ South China, Sch Resources Environm & Safety Engn, Hengyang 421001, Hunan, Peoples R China.;[Fang, Shijie] Univ South China, Sch Elect Engn, Hengyang 421001, Hunan, Peoples R China.;[Wu, Xianwei] Univ South China, Sch Math & Phys, Hengyang 421001, Hunan, Peoples R China.;[Liu, Yong] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518000, Guangdong, Peoples R China.
通讯机构：
[Yong Liu] C;[Yifan Chen] S;College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China<&wdkj&>School of Resources Environmental and Safety Engineering, University of South China, Hengyang, China
摘要：
To study the law of uranium tailings impoundment cover fissures and radon exhalation under the continuous heat and insolation conditions, the soil and uranium tailings samples from South China are made into the uranium tailings impoundment scale mode. The model was placed in a climate chamber for continuous heat and insolation environments. The fissures rate, radon exhalation rate and electrical conductivity of the model soil layer were calculated and analyzed. The results show that: (1) the radon exhalation rate and fissure ratio have the same variation pattern (2) the electrical conductivity characterization correlates with fracture rate and precedes fracture rate, which may predict the fissure growth. (3) When the experimental time exceeded 21 h, the electrical conductivity and the radon exhalation rate change showed a strong inverse correlation.
作者机构：
[Wang, Mingfeng; Li, Zhuanxia; Xiong, Wei] Wenzhou Univ, Dept Phys, Wenzhou 325035, Zhejiang, Peoples R China.;[Zhang, Guo-Qiang] Hangzhou Normal Univ, Sch Phys, Hangzhou 311121, Peoples R China.;[Li, Hai-Chao] Hubei Normal Univ, Coll Phys & Elect Sci, Huangshi 435002, Peoples R China.;[Luo, Xiao-Qing] Univ South China, Sch Elect Engn, Hunan Prov Key Lab Ultrafast Micro Nano Technol &, Hengyang 421001, Peoples R China.;[Chen, Jiaojiao] Anhui Univ, Sch Phys & Optoelect Engn, Hefei 230601, Peoples R China.
摘要：
Higher-order exceptional points (EPs) in non-Hermitian systems have attracted great interest due to their advantages in sensitive enhancement and distinct topological features. However, realization of such EPs is still a challenge because more fine-tuning parameters are generically required in quantum systems, compared to the second-order EP (EP2). Here, we propose a non-Hermitian three-mode optomechanical system in the blue-sideband regime for predicting the third-order EP (EP3). By deriving the pseudo-Hermitian condition for the proposed system, one cavity with loss and the other with gain must be required. Then we show that EP3 or EP2 can be observed when the mechanical resonator (MR) is neutral, loss, or gain. For the neutral MR, we find that two degenerate or two nondegenerate EP3s can be predicted by tuning system parameters in the parameter space, while four nondegenerate EP2s can be observed when the system parameters deviate from EP3s, which is distinguished from the previous study in the red-detuned optomechanical system. For the gain (loss) MR, we find that only two degenerate EP3s or EP2s can be predicted by tuning enhanced coupling strength. Our proposal provides a potential way to predict higher-order EPs or multiple EP2s and study multimode quantum squeezing around EPs using blue-detuned non-Hermitian optomechanical systems.
通讯机构：
[Jun Liu] S;School of Material and Energy, Guangdong University of Technology, Guangzhou 510006, Guangdong, China<&wdkj&>School of Electrical Engineering, University of South China, Hengyang 421001, Hunan, China
摘要：
The design and fabrication of high-efficiency and low-cost bifunctional catalysts in overall water splitting is crucial for the industrial application of green and clean hydrogen energy. Herein, a three-dimensional (3D) self-supporting nickel sponge (SN) with many nickel synapses prepared by hydrothermal method was employed as the substrate. 2D CoFeLDH nanosheets were grown on nano-Ni synapses of SN by electro-deposition method. For comparison, CoFeLDH also was deposited on a nickel foam (NF) substrate using the same deposition process. The as-prepared CoFeLDH/SN exhibited excellent electrocatalytic performances with 208 mV at 10 mA cm(-2) for OER and 63 mV at 10 mA cm(-2) for HER in 1 M KOH alkaline solution, which is better than that of CoFeLDH/NF (276 mV at 10 mA cm(-2) for OER, and 173 mV at 10 mA cm(-2) for HER). The electrolytic cell using CoFeLDH/SN as both cathode and anode achieves a voltage of 1.52 V at current density of 10 mA cm(-2), which is better than that of most previously reported bifunctional catalysts. Our work provides a facile and inexpensive option for the design of bifunctional catalysts in overall water splitting. (C) 2022 Elsevier B.V. All rights reserved.
摘要：
Plasmonic sensing that enables the detection of minute events, when the incident light field interacts with the nanostructure interface, has been widely applied to optical and biological detection. Implementation of the controllable plasmonic double Fano resonances (DFRs) offers a flexible and efficient way for plasmonic sensing. However, plasmonic sensing and digital metasurface induced by tailorable plasmonic DFRs require further study. In this work, we numerically and theoretically investigate the near-infrared plasmonic DFRs for plasmonic sensing and digital metasurface in a hybrid metasurface with concentric phi-shaped-hole and circular-ring-aperture unit cells. We show that a plasmonic Fano resonance, resulting from the interaction between a narrow and a wide effective dipolar modes, can be realized in the phi-shaped hybrid metasurface. In particular, we demonstrate that the tailoring plasmonic DFRs with distinct mechanisms of actions can be accomplished in three different phi-shaped hybrid metasurfaces. Moreover, the resonance mode-broadening and mode-shifting plasmonic sensing can be fulfilled by modulating the polarization orientation and the related geometric parameters of the unit cells in the near-infrared waveband, respectively. In addition, the plasmonic switch with a high ON/OFF ratio can not only be achieved but also be exploited to establish a single-bit digital metasurface, even empower to implement two- and three-bit digital metasurface characterized by the plasmonic DFRs in the telecom L-band. Our results offer a new perspective toward realizing polarization-sensitive optical sensing, passive optical switches, and programmable metasurface devices, which also broaden the landscape of subwavelength nanostructures for biosensors and optical communications. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
通讯机构：
[Hongyu He] S;School of Electrical Engineering, University of South China, Hengyang 421001, China<&wdkj&>School of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen 518005, China<&wdkj&>School of Automation, Guangdong University of Technology, Guangzhou 510006, China
摘要：
The drain current of the amorphous InGaZnO thin-film transistors (TFTs) shows the Arrhenius and the non-Arrhenius dependence at the high temperature and the low temperature respectively. The gate-voltage-dependent effective temperature is introduced into the Arrhenius equation. Considering the normal Meyer-Neldel (MN) rule and the inverse MN rule, the equation successfully describes both the Arrhenius and the non-Arrhenius dependent drain current at the low and the high gate voltage. The calculated results of the equation are verified by the available experimental data of the amorphous La-doped InZnO TFT and the amorphous InGaZnO (InO3:Ga2O3:ZnO = 1:1:1 mol%) TFT.
摘要：
Separatrix crossing stands for the continuation of the modulation instability into the strong depleted regime and is responsible for the symmetry breaking nature of the recurrence phenomenon. The near-separatrix dynamic for recurrent modulational instability is of great importance because it is closely associated with the formation of rogue breather structures. Here, we have developed the underlying phase-space structure of nonlinear modulation instability by treating the three-mode truncate model as a simple oscillator. This allowed us to reveal the high sensitivity of the switching dynamics characterized by inner or outer trajectories to the initial condition around a separatrix. Our results present a major step forward towards the complete understanding of recurrent modulational instability in a truly conservative setting and can provide a guidance to experimentally measure the involved recursive behaviors.
期刊：
Science and Technology of Nuclear Installations,2021年2021 ISSN：1687-6075
作者机构：
[Yang, Xiaohua; Zeng, Tiejun; Jiang, Panpan] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Zeng, Tiejun] Univ South China, Sch Elect Engn, Hengyang 421001, Peoples R China.;[Yang, Xiaohua; Wan, Yaping] CNNC Key Lab High Trusted Comp, Hengyang 421001, Peoples R China.;[Yang, Xiaohua; Liu, Zhenghai; Wan, Yaping; Jiang, Panpan] Univ South China, Sch Comp, Hengyang 421001, Peoples R China.
摘要：
For loss and theft in the transport of radioactive materials by a single vehicle, this article summarizes the characteristics of "illegal movement" and establishes a security system that senses its inter-relationship and responds though the group network relationship. The security system reminds the vehicle crew through on-site response and linkage response. A failure detection method for on-site response is proposed, that is, the push model is used first, and when the measurement results are suspected, the pull model is used to further confirm the failure. The failure detection for linkage response adopts the push model. According to the different security requirements of the basic and enhanced transportation, the principle of setting the timeout threshold in the failure detection algorithm is proposed. In the enhanced type, the value is smaller, otherwise the value is larger. A specific timeout threshold quantification scheme is proposed. Experiments show that the method proposed in this article is effective.
期刊：
IEEE Transactions on Plasma Science,2021年49(9):2757-2764 ISSN：0093-3813
作者机构：
[Wu, Rongyan] Univ South China, Dept Elect Engn, Hengyang 421001, Peoples R China.;[Zhou, Jianliang] Univ South China, Dept Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Wu, Yaxin] Univ South China, Dept Chem & Chem Engn, Hengyang 421001, Peoples R China.
关键词：
CST Particle Studio (CST-PS);space charge limited current (SCLC);vacuum cylindrical diode;Pi cathode
摘要：
The anode and the cathode of the cylindrical $\Pi $ cathode diode are not coaxial, and the quantitative calculation of its space charge limited current (SCLC) has not been reported. In this article, we propose the SCLC quantitative expression of cylindrical $\Pi $ cathode diode through improving the theory model of Japanese distinguished scholar Y. Koike ( ) based on the 3/2 power law of SCLC of the coaxial cylindrical diode and study the relationship between current and cathode structure of cylindrical $\Pi $ cathode diode by using the numerical simulation method based on the CST Particle Studio (CST-PS). This improved model is more suitable than previous empirical formulas when the radius of a single cathode is greater than or equal to 1.0 mm and can be used in combination with the theory model of Y. Koike to estimate quantitatively the SCLC of cylindrical $\Pi $ cathode diode. Moreover, it also provides an effective basis for the design and optimization of the $\Pi $ cathode structure of the high-power vacuum transmitting tube.
摘要：
Combination-chord model (CCM), specially designed to broaden the range of rail corrugation measurement, still faces two troubles including the measuring point deviation and the inverse filter parameters optimization. In this paper, a triple-line structured-light vision (SLV) based CCM is introduced to address these issues. Two solutions respectively for rectification of the measuring points deviation and optimization of the inverse filter parameters are presented. The former, based on the horizontal spacing constraint, detects the exact measuring point from a true rail profile which is reconstructed and rectified by the triple-line SLV. The latter, based on the minimum cumulative recovery error, defines the optimized numbers of frequency sampling and filter order, together with a splicing wavelength. Employing these optimized parameters, our CCM yields the overall amplitude-frequency response being nearly one whether for longwave corrugation or for shortwave corrugation. Both of the proposed solutions aim at enhancing the ordinary CCM in terms of the validity for rail corrugation measurement. Experimental assessments verify the availability and repeatability of our scheme.
作者：
Bu, Feng;Fan, Bo;Xu, Dacheng;Guo, Shuwen;Zhao, Heming
期刊：
Journal Of Micromechanics And Microengineering,2021年31(6):065002 ISSN：0960-1317
通讯作者：
Feng Bu
作者机构：
[Bu, Feng] Suzhou Vocat Univ, Sch Elect & Informat Engn, Suzhou 215104, Peoples R China.;[Fan, Bo] Univ South China, Sch Elect Engn, Hengyang 421001, Peoples R China.;[Xu, Dacheng; Zhao, Heming; Fan, Bo; Guo, Shuwen; Bu, Feng] Soochow Univ, Sch Elect & Informat Engn, Suzhou 215006, Peoples R China.
通讯机构：
[Feng Bu] S;School of Electronic and Information Engineering, Suzhou Vocational University, Suzhou 215104, People's Republic of China<&wdkj&>School of Electronic and Information Engineering, Soochow University, Suzhou 215006, People's Republic of China
摘要：
The force-to-rebalance (FTR) closed-loop detection method is commonly used to expand the bandwidth (BW) for micro-electro-mechanical system (MEMS) gyroscopes with low-frequency split and high-quality factors. However, the relationship between the BW and output noise is often incompatible; thus, reducing the detection accuracy of the gyroscope. This paper presents an analysis of the BW and noise spectra under modulation-demodulation FTR gyroscopes. The expressions for the BW and the noise-equivalent rate (NER) spectrum are derived to explore the effects of the loop gain on the BW and NER. It is demonstrated that the gain of the amplifier circuit is maximally transferred to the vibration displacement signal conversion part, which can reduce the output noise without affecting the BW. The simulation and experimental results on the Cobweb-like disk resonator gyroscope show that the derived expressions of BW and NER are correct, and the noise optimization method is effective, which provides an idea for the realization of a high-precision MEMS gyroscope.
通讯机构：
[Peng Chen; Fei Liu] P;[Shuang-Feng Yin] S;State Key Laboratory of Chemo/Biosensing and Chemometrics, Provincial Hunan Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing Carbon-dioxide Emissions, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, Hunan, China<&wdkj&>Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
