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arXiv 2022年

作者： Zhang, Qi Ma, Yun Liu, Qi Zhang, Xinchen Jia, Yali Tong, LiMin Gong, Qihuang Gu, Ying State Key Laboratory for Mesoscopic Physics Department of Physics Peking University Beijing100871 China Institute of Navigation and Control Technology China North Industries Group Corporation Beijing100089 China Frontiers Science Center for Nano-optoelectronics & Collaborative Innovation Center of Quantum Matter Beijing Academy of Quantum Information Sciences Peking University Beijing100871 China Collaborative Innovation Center of Extreme Optics Shanxi University Taiyuan030006 China Peking University Yangtze Delta Institute of Optoelectronics Nantong226010 China Interdisciplinary Center for Quantum Information State Key Laboratory of Modern Optical Instrumentation College of Optical Science and Engineering Zhejiang University Hangzhou310027 China Jiaxing Key Laboratory of Photonic Sensing & Intelligent Imaging Jiaxing314000 China Intelligent Optics & Photonics Research Center Jiaxing Research Institute Zhejiang University Jiaxing314000 China

Paritytime (PT) symmetry and broken in micro/nano photonic structures have been investigated extensively as they bring new opportunities to control the flow of light based on non-Hermitian optics. Previous studies have focused on the situations of PT-symmetry broken in loss-loss or gain-loss coupling systems. Here, we theoretically predict the gain-gain and gain-lossless PT-broken from phase diagram, where the boundaries between PT-symmetry and PT-broken can be clearly defined in the full-parameter space including gain, lossless and loss. For specific micro/nano photonic structures, such as coupled waveguides, we give the transmission matrices of each phase space, which can be used for beam splitting. Taking coupled waveguides as an example, we obtain periodic energy exchange in PT-symmetry phase and exponential gain or loss in PT-broken phase, which are consistent with the phase diagram. The scenario giving a full view of PT-symmetry or broken, will not only deepen the understanding of fundamental physics, but also will promote the breakthrough of photonic applications like optical routers and beam splitters. © 2022, CC0.

关键词： Phase diagrams

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Two-dimensional nitrogen-doped carbon nanosheets-coated porous SiO composites sponges for durable anode materials of high-energy lithium-ion batteries

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Chemical engineering Journal 2025年 518卷

作者： Zaohong Zhang Weichen Chen Jie Tian Kai Zhang Carlos Ponce de León Albarrán Chuan Wu Zhicong Shi Zibiao Li Jia Hong Pan Beijing Key Laboratory of Emission Surveillance & Control for Thermal Power Generation School of Energy Power and Mechanical Engineering North China Electric Power University Beijing 102206 China Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials School of Resources Environments and Materials Guangxi University Nanning 530004 Guangxi China Institute for Materials Discovery Faculty of Mathematical and Physical Sciences University College London London WC1E 7JE United Kingdom Electrochemical Engineering Laboratory Faculty of Engineering and Physical Sciences University of Southampton Southampton SO17 1BJ United Kingdom Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science& Engineering Beijing Institute of Technology Beijing 100081 China Institute of Batteries School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China Institute of Materials Research and Engineering Agency for Science Technology and Research (A*STAR) 2 Fusionopolis Way Innovis #08-03 Singapore 138634 Republic of Singapore

Carbon coating has been widely used to improve electronic conductivity of silicon monoxide (SiO) anodes and lower their volume expansion; however, the electrochemical stabilization of carbon layer is still low and large-scale synthesis of SiO@C nanocomposites is still an urgent challenge. Here we develop a facile dry ball milling process for the mass production of sponge-like SiO composites decorated with carbon nanosheets, featuring a simple preparation process, high compaction density, high electronic conductivity, high ionic diffusion capacity and excellent structure stability. 2D nitrogen-doped carbon nanosheets (2D-NC) by simply mixing SiO particles with melamine and polyvinyl pyrrolidone (PVP) as the dual sources of N and C. Upon calcination, the pyrolysis product of melamine, g-C 3 N 4 , acts as a sacrificial template to effectively direct a novel stacked 2D nanostructure. The formation of uniform 2D-NC coating on SiO enhances both the electronic conductivity and the Li + ions diffusion coefficient, leading to outstanding electrochemical performances of SiO@2D-NC anode. Specifically, the as-prepared SiO@2D-NC anode exhibits a reversible capacity of 954.6 mAh g −1 at 1.0 A g −1 after 200 cycles, along with impressive high-rate performance of 840.6 mAh g −1 at 5.0 A g −1 . Additionally, the SiO@2D-NC anode exhibits excellent storage performance with a capacity retention ratio of 91.5 % at 50 ℃ after 16 days. The full cell utilizing the commercial LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) cathode achieves a reversible capacity of 174.1 mAh g −1 and an impressive initial coulombic efficiency of 82 % at 0.2C, while maintaining a high ratio of capacity retention ≈ 82.4 % at 0.5C after 100 cycles and providing a high energy density of 497.8 Wh kg −1 .

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Reachable Set Estimation of Switched Genetic Regulatory Networks with Mixed Delays and Bounded Disturbances*

Reachable Set Estimation of Switched Genetic Regulatory Netw...

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IEEE Conference on Decision and control

作者： Xian Zhang Lina Zhang Yu Xue Xin Wang Mouquan Shen Jun-Wei Zhu School of Mathematical Science Heilongjiang University Harbin China Heilongjiang Provincial Key Laboratory of the Theory and Computation of Complex Systems Heilongjiang University Harbin China College of Electrical Engineering and Control Science Nanjing Technology University Nanjing China Zhejiang University of Technology Hangzhou China

ISBN: (数字)9781728174471

ISBN: (纸本)9781728174488

This paper addresses the problem of reachable set estimation for switched genetic regulatory networks with mixed delays and bounded disturbances. A delay-dependent sufficient condition is investigated to guarantee that the reachable set of genetic regulatory networks under consideration is contained within a Cartesian product of two polytopes or spheres. The sufficient condition involves only some simple inequalities, which can be easily verified by using the usual tool software. A numerical example is given to present that the proposed method is effective. Compared with the Lyapunov-Krasovskii functional method that has been used in many literature, the proposed method have two advantages: (i) No Lyapunov- Krasovskii functional is required; and (ii) Less computational complexity is involved.

关键词： Switches Estimation Delays Proteins Genetics Dynamical systems Delay effects

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MyoPS: A Benchmark of Myocardial Pathology Segmentation Combining Three-Sequence Cardiac Magnetic Resonance Images

arXiv

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arXiv 2022年

作者： Li, Lei Wu, Fuping Wang, Sihan Luo, Xinzhe Martín-Isla, Carlos Zhai, Shuwei Zhang, Jianpeng Liu, Yanfei Zhang, Zhen Ankenbrand, Markus J. Jiang, Haochuan Zhang, Xiaoran Wang, Linhong Arega, Tewodros Weldebirhan Altunok, Elif Zhao, Zhou Li, Feiyan Ma, Jun Yang, Xiaoping Puybareau, Elodie Oksuz, Ilkay Bricq, Stephanie Li, Weisheng Punithakumar, Kumaradevan Tsaftaris, Sotirios A. Schreiber, Laura M. Yang, Mingjing Liu, Guocai Xia, Yong Wang, Guotai Escalera, Sergio Zhuang, Xiahai School of Data Science Fudan University Shanghai China School of Biomedical Engineering Shanghai Jiao Tong University Shanghai China Departament de Matemàtiques & Informàtica Universitat de Barcelona Barcelona Spain Computer Vision Center Universitat Autònoma de Barcelona Spain School of Mechanical and Electrical Engineering University of Electronic Science and Technology of China Chengdu China School of Computer Science and Engineering Northwestern Polytechnical University Xi'An China College of Electrical and Information Engineering Hunan University Changsha China National Engineering Laboratory for Robot Visual Perception and Control Technology Changsha China College of Physics and Information Engineering Fuzhou University Fuzhou China Comprehensive Heart Failure Center Wuerzburg University Hospitals Wuerzburg Germany School of Engineering University of Edinburgh Edinburgh United Kingdom School of Robotics Xi'an Jiaotong-Liverpool University Suzhou China Department of Electrical and Computer Engineering University of California Los Angeles United States Department of Radiology and Diagnostic Imaging University of Alberta Edmonton Canada Chongqing Key Laboratory of Image Cognition Chongqing University of Posts and Telecomm-Unications Chongqing China ImViA Laboratory Université Bourgogne Franche-Comté Dijon France Computer Engineering Department Istanbul Technical University Istanbul Turkey Le Kremlin-Bicêtre France Department of Mathematics Nanjing University of Science and Technology Nanjing China Department of Mathematics Nanjing University Nanjing China

Assessment of myocardial viability is essential in diagnosis and treatment management of patients suffering from myocardial infarction, and classification of pathology on myocardium is the key to this assessment. This work defines a new task of medical image analysis, i.e., to perform myocardial pathology segmentation (MyoPS) combining three-sequence cardiac magnetic resonance (CMR) images, which was first proposed in the MyoPS challenge, in conjunction with MICCAI 2020. The challenge provided 45 paired and pre-aligned CMR images, allowing algorithms to combine the complementary information from the three CMR sequences for pathology segmentation. In this article, we provide details of the challenge, survey the works from fifteen participants and interpret their methods according to five aspects, i.e., preprocessing, data augmentation, learning strategy, model architecture and post-processing. In addition, we analyze the results with respect to different factors, in order to examine the key obstacles and explore potential of solutions, as well as to provide a benchmark for future research. We conclude that while promising results have been reported, the research is still in the early stage, and more in-depth exploration is needed before a successful application to the clinics. Note that MyoPS data and evaluation tool continue to be publicly available upon registration via its homepage (***/zhuangxiahai/0/myops20/). © 2022, CC BY-NC-SA.

关键词： Magnetic resonance imaging

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Corrigendum to "Physiological energetics of selectively bred oysters (Crassostrea hongkongensis) under marine heatwaves" [Mar. Environ. Res. 204 (2025) 106871]

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Marine environmental research 2025年 204卷 106903页

作者： Xiaoyan Jiang Xingzhi Zhang Junliang Guan Pingping He Pingyuan Wei Li Zhang Jinxia Peng Liqiang Zhao China (Guangxi)-ASEAN Key Laboratory of Comprehensive Exploitation and Utilization of Aquatic Germplasm Resources Ministry of Agriculture and Rural Affairs Guangxi Academy of Fishery Sciences Nanning China Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture Fishery College Guangdong Ocean University Zhanjiang China. Beibu Gulf Marine Ecological Environment Field Observation and Research Station of Guangxi Marine Environmental Monitoring Centre of Guangxi Beihai China. Beibu Gulf Marine Ecological Environment Field Observation and Research Station of Guangxi Marine Environmental Monitoring Centre of Guangxi Beihai China. Electronic address: pengjinxia@***. Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture Fishery College Guangdong Ocean University Zhanjiang China Oyster Industrial Technology Institute of Zhanjiang Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang) Zhanjiang China. Electronic address: lzhao@***.

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Structural combinatorial of network information system of systems based on evolutionary optimization method

arXiv

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arXiv 2020年

作者： Zhang, Tingting Lan, Yushi Song, Aiguo Liu, Kun Wang, Nan Computer and military software engineering PLA Army Engineering University Nanjing China National defense key laboratory China Electronics Technology Group Corporation Nanjing China College of Instrument Science and Engineering Southeast University Nanjing China College of Command and Control Engineering PLA Army Engineering University Nanjing China

The network information system is a military information network system with evolution characteristics. Evolution is a process of replacement between disorder and order, chaos and equilibrium. Given that the concept of evolution originates from biological systems, in this article, the evolution of network information architecture is analyzed by genetic algorithms, and the network information architecture is represented by chromosomes. Besides, the genetic algorithm is also applied to find the optimal chromosome in the architecture space. The evolutionary simulation is used to predict the optimal scheme of the network information architecture and provide a reference for system construction. Copyright © 2020, The Authors. All rights reserved.

关键词： Genetic algorithms

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Structural combinatorial of network information system of systems based on evolutionary optimization ***

TechRxiv

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TechRxiv 2020年

关键词： Genetic algorithms

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Corrigendum to "Spatial confinement-regulated peroxymonosulfate activation by bimetallic-doped hollow carbon spheres for rapid removal of organic pollutants" [J. Colloid Interface Sci. 689 (2025) 137235]

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Journal of colloid and interface science 2025年 690卷 137307页

作者： Huanxuan Li Xing Gao Xuhong Zhang Shaodan Xu Zhong Zhou Tao Rao Jingang Huang Chunhui Wang College of Materials and Environmental Engineering Hangzhou Dianzi University Hangzhou 310018 PR China. Electronic address: hxlee@***. China Aerospace Planning and Design Group Co. Ltd. Zhejiang Branch Hangzhou 310000 China. College of Materials and Environmental Engineering Hangzhou Dianzi University Hangzhou 310018 PR China. State Key Laboratory of Regional and Urban Ecology Institute of Urban Environment Chinese Academy of Sciences Xiamen 361021 China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control CAS Haixi Industrial Technology Innovation Center in Beilun Ningbo 315830 China. Electronic address: chwang@***.

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Investigation of infrared radiation characteristics of MgO-doped YSZ coatings fabricated via atmospheric plasma spraying

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Infrared Physics & technology 2025年 150卷

作者： Juhang Yin Min Zhang Huazhong Zhang Tong Zhou Yang Xiang Mian Zhong Chao Zhou Xiaoguang Tu Yin Zhang Li Zhang College of Aviation Electronics and Electrical Civil Aviation Flight University of China Guanghan 618307 Sichuan China Shenyang Aircraft Design and Research Institute The Avitation Industry Corporation of China Ltd. Shenyang 110035 China National Engineering Research Center of Electromagnetic Radiation Control Materials Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 611731 China

Yttrium-stabilized zirconia (YSZ) plays a vital role in infrared stealth technology, owing to its exceptional thermal stability and electrical conductivity. However, its emissivity in the critical 3–5 μm wavelength range remains relatively high, prompting the need for further reductions as aircraft operational temperatures increase. This study investigates the preparation of YSZ coatings doped with magnesium oxide (MgO) using atmospheric plasma spraying (APS) and evaluates the effects of varying MgO concentrations on the microstructure, crystal structure, and infrared emissivity of the coatings. The findings indicate that MgO doping significantly enhances the concentration of oxygen vacancies and promotes grain growth, resulting in a marked reduction in emissivity to 0.55 at 5 mol% MgO. Additionally, high-temperature emissivity assessments demonstrate a continued decrease in emissivity with rising temperature, underscoring the potential of MgO-doped YSZ coatings for advanced stealth applications.

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Dose-dependent effects of MIL-88A(Fe) and MIL-101(Fe) on arsenic immobilization and phytoremediation using ramie ( Boehmeria nivea L.)

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Chemical engineering Journal 2025年 517卷

作者： Jian Ye Xingyan Yin Chunping Yang Xiaofei Tan Chuang Li Gaobin Chen Ping Chen Qiang Chen Mingyang Dai College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University) Ministry of Education Changsha 410082 PR China Shenzhen Research Institute of Hunan University Shenzhen 518055 PR China Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province School of Environmental Science and Engineering Hainan University Haikou Hainan 570228 PR China Academy of Environmental and Resource Sciences School of Environmental Science and Engineering Guangdong University of Petrochemical Technology Maoming Guangdong 525000 PR China Institute of Bast Fiber Crops Chinese Academy of Agricultural Sciences Changsha 410205 Hunan Province PR China

The efficacy and environmental effects of using metal–organic frameworks (MOFs) for the remediation of arsenic (As)-contaminated soil, a significant global problem, remain unclear. This study evaluated MIL-88A(Fe) and MIL-101(Fe) coupled with ramie ( Boehmeria nivea L.) for As-contaminated soil remediation. A soil incubation experiment revealed that 10,000 mg kg −1 MIL-88A(Fe) and MIL-101(Fe) reduced As bioavailability by 77.1 % and 65.0 %, respectively, and increased residual As fractions by 8 % and 7 % through Fe-As co-precipitation and adsorption. Divergent environmental effects emerged, which were probably due to differences in the framework structures and organic ligands: MIL-88A(Fe) improved soil urease activity and bacterial diversity, whereas MIL-101(Fe) induced acidification (decreasing soil pH by 25 %) and salinity stress (elevating soil electrical conductivity (EC) by 946 %). A pot experiment showed that 1000 mg kg −1 MOFs enhanced ramie biomass via As immobilization, whereas 5000 mg kg −1 MIL-101(Fe) suppressed growth because exposure to the MOF caused root damage. The MOFs enriched Pseudomonas (As-oxidizing) and suppressed Dokdonella (pathogenic), enhancing plant resilience. Notably, 100 mg kg −1 MIL-101(Fe) increased As translocation to stems (14.8 %) and leaves (27.6 %). Hydroponic analyses showed that 50–200 mg L -1 MIL-101(Fe) mitigated As-induced chlorophyll degradation (elevating Soil and plant analyzer development (SPAD) by 12.8 %–28.3 %), whereas 500 and 1000 mg L -1 induced oxidative stress (reducing SPAD by 4.2 %–10.7 %). This study provides valuable insights into using Fe-based MOFs in soil remediation and highlights their beneficial and harmful effects.

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