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Corrigendum to “Flow characteristics of pneumatic conveying of stiff shotcrete based on CFD-DEM method” [ Powder technology 397 (2022) 117109]

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Powder technology 2022年 403卷

作者： Lianjun Chen Zhenjiao Sun Hui Ma Gang Pan Pengcheng Li Kang Gao College of Safety and Environmental Engineering Shandong University of Science and Technology Qingdao 266590 China State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and Ministry of Science and Technology Shandong University of Science and Technology Qingdao 266590 China National Demonstration Center for Experimental Mining Engineering Education Shandong University of Science and Technology Qingdao 266590 China

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Regeneration mechanism, modification strategy, and environment application of layered double hydroxides: Insights based on memory effect

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Coordination Chemistry Reviews 2022年 450卷

作者： Haoyang Ye Shiyu Liu Deyou Yu Xuerong Zhou Lei Qin Cui Lai Fanzhi Qin Mingming Zhang Wenjing Chen Wenfang Chen Ling Xiang College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution Control Hunan University Ministry of Education Changsha Hunan 410082 PR China Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of Education School of Textile Science and Engineering Zhejiang Sci-Tech University Hangzhou 310018 PR China

Layered double hydroxides (LDHs), are ideal inorganic materials for versatile fields, such as catalysis, energy, and medicine. Memory effect means the ability of reconstruction into their initial structure after decomposition treatment for some special materials. Based on the unique property, the layered structure can be regenerated from the calcined LDHs (layered double oxide, LDO) in an aqueous solution or moist air. This effect provides a new paradigm for modification of LDHs, increasing the abundance of active sites in LDHs as well as preserves original active sites for multifunctional environmental applications. Therefore, this review summarizes the memory effect of LDHs from basic mechanisms to real applications. Firstly, various kinds of active sites on LDHs/LDOs and the importance of sites structure are concluded. Secondly, the modification methods of LDHs are briefly introduced and the characteristics of memory effect are summarized. Then, the mechanism of chemical reaction, topology, and thermodynamics of memory effect are discussed as well as the microscopic mechanism of memory effect through theoretical chemical calculation. The influencing factors and applications in environmental remediation are also presented. Finally, the challenges and prospects of memory effect-based LDHs are proposed. We hope the review could open a new path for the environmental application of memory effect-based LDHs.

关键词： Layered double hydroxide Layered double oxide Catalysis Adsorption Memory effect

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Adsorption and Sensing Characteristics of Transition Metal (AU, Fe, Pt, Rh and Cu) Doped Ws2 on Dissolved Gases in Transformer Oil: A Dft Perspective

SSRN

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SSRN 2025年

作者： Jiang, Wenwen Zeng, Qingbin Zhang, Yiyi Wang, Guishan Sun, Kuoteng Xu, Min Chen, Dachang Jia, Pengfei School of Electrical Engineering Guangxi University Nanning China School of Artificial Intelligence Guangxi University Nanning China Guangxi Key Laboratory of Intelligent Control and Maintenance of Power Equipment Guangxi University Nanning China China Southern Power Grid Extra High Voltage Power Transmission Company Liuzhou Branch Liuzhou China College of Food Science and Bioengineering Xihua University Chengdu China School of Electrical and Electronic Engineering Wuhan Polytechnic University Wuhan China Guangxi Key Laboratory of Power System Optimization and Energy Technology China

In this work, the sensing characteristics of transition metal (Au, Pt, Fe, Rh, Cu) doped WS2 for faulty decomposition gases (CO, CH4, C2H2, C2H4) in oil-immersed transformers were studied using density functional theory (DFT). The analysis showed that pristine WS2 had limited adsorption capacity for these gases. After comparing two doping sites, the more stable TM-WS2 structure was selected. Adsorption structures were optimized, and interactions between the gas molecules and TM-WS2 were analyzed through binding energies, charge transfer, band gaps, and density of states. Results showed that doped WS2 exhibited enhanced gas adsorption compared to pristine WS2. Pt-WS2 showed excellent performance for CH4, Rh-WS2 for C2H4, and Cu-WS2 for C2H2, with short response times and high detection efficiency. This work provides insights into the design of gas-sensing materials based on TM-WS2 © 2025, The Authors. All rights reserved.

关键词： Chemical sensors

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Correction: Hybrid lanthanide nanoparticles as a new class of binary contrast agents for in vivo T1/T2 dual-weighted MRI and synergistic tumor diagnosis

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Journal of Materials Chemistry B 2023年第40期11卷 9765-9765页

作者： Zhigao Yi Xiaolong Li Wei Lu Hongrong Liu Songjun Zeng Jianhua Hao College of Physics and Information Science and Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of the Ministry of Education Hunan Normal University Changsha 410081 Hunan China School of Materials Science and Engineering Key Laboratory of Low-dimensional Materials and Application Technology (Ministry of Education) Xiangtan University Xiangtan 411105 China Department of Applied Physics and Materials Research Center The Hong Kong Polytechnic University Hong Kong China

Correction for ‘Hybrid lanthanide nanoparticles as a new class of binary contrast agents for in vivo T1/T2 dual-weighted MRI and synergistic tumor diagnosis’ by Zhigao Yi et al., J. Mater. Chem. B, 2016, 4, 2715–27...

Correction for ‘Hybrid lanthanide nanoparticles as a new class of binary contrast agents for in vivo T₁/T₂ dual-weighted MRI and synergistic tumor diagnosis’ by Zhigao Yi et al., J. Mater. Chem. B, 2016, 4, 2715–2722, https://***/10.1039/C5TB02375K.

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A Study on the Micro-Lens Arrays Combination based Optical Film for Optical Field Optimized Projection Display

A Study on the Micro-Lens Arrays Combination based Optical F...

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International Conference on Display technology, ICDT 2019

作者： Ding, Liang Li, Zhou Su, Dongbian Guo, Bingang Wang, Pengfei Guo, Dengji Liu, Cai Dept. of R&D Shenzhen Holokook Technology Co. Ltd Shenzhen China Key Laboratory of In-fiber Integrated Optics of the Ministry of Education College of Science Harbin Engineering University Harbin China Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Mechatronics and Control Engineering Shenzhen University Shenzhen China Shenzhen Institute for Quantum Science and Engineering Dept. of Physics Southern University of Science and Technology Shenzhen China

ISBN: (纸本)9781510896161

Owning to the fast development of projection technologies, the large-scale projection has great potential application for various viewing circumstances in open spaces. This paper reports a novel type of optical imaging film (G2-HK-FP) which comprised of a combination of micro-lens arrays of different sizes and an ambient light rejection design. This film exhibited comparable displaying performance with silver screen film in the dark environment, and superior performance in the ambient light condition in the aspects of relative contrast, color gamut and ambient light rejection efficiency. © 2019, John Wiley and Sons Inc. All rights reserved.

关键词： Projection screens

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Third generation of vortex identification methods:Omega and Liutex/Rortex based systems

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Journal of Hydrodynamics 2019年第2期31卷 205-223页

作者： Chaoqun Liu Yi-sheng Gao Xiang-rui Dong Yi-qian Wang Jian-ming Liu Yu-ning Zhang Xiao-shu Cai Nan Gui Department of Mathematics University of Texas at ArlingtonArlington 76019TexasUSA College of Energy and Power Engineering University of Shanghai for Science and TechnologyShanghai 200093China School of Aerospace Engineering Tsinghua UniversityBeijing 100084China School of Mathematics and Statistics Jiangsu Normal UniversityXuzhou 221116China Key Laboratory of Condition Monitoring and Control for Power Plant Equipment(Ministry of Education) School of EnergyPower and Mechanical EngineeringNorth China Electric Power UniversityBeijing 102206China Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy TechnologyKey Laboratory of Advanced Reactor Engineering and Safety of Ministry of EducationTsinghua UniversityBeijing 100084China

A vortex is intuitively recognized as the rotational/swirling motion of fluids,but a rigorous and universally-accepted definition is still not *** tube/filament has been regarded equivalent to a vortex since Helmholtz proposed the concepts of vorticity tube/filament in 1858 and the vorticity-based methods can be categorized as the first generation of vortex identification *** the last three decades,a lot of vortex identification methods,including 0,A,and Aci criteria,have been proposed to overcome the problems associated with the vorticity-based *** of these criteria are based on the Cauchy-Stokes decomposition and/or eigenvalues of the velocity gradient tensor and can be considered as the second generation of vortex identification *** from 2014,the Vortex and Turbulence Research Team at the University of Texas at Arlington(the UTA team)focus on the development of a new generation of vortex identification *** first fruit of this effort,a new Omega(/2)vortex identification method,which defined a vortex as a connected region where the vorticity overtakes the deformation,was published in *** 2017 and 2018,a Liutex(previously called Rortex)vector was proposed to provide a mathematical definition of the local rigid rotation part of the fluid motion,including both the local rotational axis and the rotational ***/Rortex is a new physical quantity with scalar,vector and tensor forms exactly representing the local rigid rotation of ***,a decomposition of the vorticity to a rotational part namely Liutex/Rortex and an anti-symmetric shear part(RS decomposition)was introduced in 2018,and a universal decomposition of the velocity gradient tensor to a rotation part(7?)and a non-rotation part(NR、was also given in 2018 as a counterpart of the traditional Cauchy-Stokes *** in early 2019,a Liutex/Rortex based Omega method called Omega-Liutex,which combines the respective advantages o

关键词： Vortex definition vortex identification Omega Liutex/Rortex direct numerical simulation turbulence

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SPAHN novel approach for PL-AG gateway discovery for internet connectivity

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Peer-to-Peer Networking and Applications 2020年第4期14卷 2275-2284页

作者： Kannan, K. Sivaranjani, P. Sathish Kumar, S. Nalini, M. Balaji, V. R. Sanjeevi, P. Department of ECE R.M.K. College of Engineering and Technology Chennai India Department of Electronics and communication Engineering Kongu Engineering College Erode India Dept of Electrical and Electronics Engineering M. Kumarasamy College of Engineering Thalavapalayam India Department of Computer Science and Engineering Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Chennai India Department of ECE Sri Krishna College of Engineering and Technology Coimbatore India Key Laboratory of Advanced Process Control for Light Industry Ministry of Education Jiangnan University Wuxi China

Internet Gateway(IGW) main role is detecting availability nodes and providing internet to Mobile Ad Hoc Network(MANET) have whenever connected to internet. Discovery time of gateway is changed based on the throughput and packet delay. Many of the situations the mobile nodes are have fixed host connection to the internet using minimum hop path, it is not good for waiting packets because of that packets are have longer path interface queue. This research paper object is avoided above the problem mentioning using a novel approach of SPAHN (Solving Problem of Ad-Hoc Network). This paper mainly focus is classify the routing protocols of load-aware in MANET and from this classify discover the proactive load-aware gateway (PL-AG) from a device into interface queue size and min-hop-metric. This novel approach has been allowing and gives better handoff between two internet gateways for fixed host seamless connectivity. We justify the performance of the SPAHN approach using two metrics like average end-to-end delay and throughput based on this examination the SPAHN system yield good simulation results comparably existing systems.

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Level attraction and PT symmetry in indirectly coupled microresonators

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Physical Review A 2020年第4期102卷 043527-043527页

作者： Zhao-Hui Peng Chun-Xia Jia Yu-Qing Zhang Ji-Bing Yuan Le-Man Kuang Institute of Modern Physics and Department of Physics College of Physics and Electronic Science Hunan University of Science and Technology Xiangtan 411201 China Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal University Changsha 410081 China College of Physics and Electronic Engineering and Hunan Provincial Key Laboratory of Intelligent Information Processing and Application Hengyang Normal University Hengyang 421008 China

Benefiting from the tunability of their phase delay and gain, we show the possibility of realizing level attraction, parity-time (PT)-, and anti-PT-symmetric photonic structures with indirectly coupled active and passive microresonators mediated by drop-filter waveguides. We find that level attraction originates from two mechanisms, i.e., exceptional point and resonance, and it may emerge not only for dissipative coupling but also coherent coupling and hybrid coupling after considering the gain and loss of microresonators, which confirms the universality of level attraction in the coupled photonic system. On the other hand, the transition from PT to anti-PT symmetry or vice versa may be realizable by tuning their phase delay and gain; thus the indirectly coupled microresonators may provide an excellent platform for exhibiting the unique features of PT and anti-PT symmetry. Furthermore, we also reveal the intrinsic relationship of the line shape and phase behavior of the reflection spectrum with PT symmetry, anti-PT symmetry, and level attraction.

关键词： Nanophotonics Optics & lasers Quantum optics Optical microcavities Waveguides Quantum theory

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Redesigning electrification of China’s ammonia and methanol industry to balance decarbonization with power system security

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Nature Energy 2025年 1-12页

作者： Jiarong Li Jin Lin Sirui Wu Zhipeng Yu Chris P. Nielsen Michael B. McElroy Jianxiao Wang Jie Song Xi Lu Yonghua Song Xuefeng Lyu Mingkai Yu Department of Electrical Engineering Tsinghua University Beijing China Harvard-China Project on Energy Economy and Environment Harvard University Cambridge MA USA State Key Laboratory of Power System Operation and Control Tsinghua University Beijing China National Engineering Laboratory for Big Data Analysis and Applications Peking University Beijing China Department of Industrial Engineering and Management College of Engineering Peking University Beijing China State Key Laboratory of Regional Environment and Sustainability School of Environment Tsinghua University Beijing China Institute for Carbon Neutrality Tsinghua University Beijing China State Key Laboratory of Internet of Things for Smart City University of Macau Macau China School of Nuclear Science and Engineering North China Electric Power University Beijing China China Electric Power Research Institute Beijing China

Electrification represents a critical pathway to decarbonize the ammonia and methanol industries by reducing fossil fuel reliance. However, a greater understanding is needed of how the spatio-temporal mismatch between renewable generation and chemical load patterns may impact on power system emissions and security. Here we assess different electrification pathways across 22 Chinese provinces from 2020 to 2050. Using 2020 data, we show that reliance on grid electricity offsets CO2reductions by increasing power system emissions, raising national emissions by 1%. Integrating co-located renewables without self-balancing flexibility exacerbates power system security risks, potentially increasing balancing requirements by 9%. To address this challenge, we propose the ‘Green Flexible Chemical Electrification’ pathway, transitioning from requirements for stringent co-located renewables to rigid temporal self flexibility. By 2030, Green Flexible Chemical Electrification demonstrates cost competitiveness nationwide, with green ammonia potentially generating 2 billion RMB in profit. Additionally, redesigning electricity pricing to incentivize chemical-side demand management further enhances power–chemical synergies.

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大型膜生物反应器在中国工业废水处理中的应用——技术经济特征、驱动力和展望

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engineering 2021年第6期7卷 358-385页

作者：张姣肖康刘紫微高庭苇梁帅黄霞 State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Research and Application Center for Membrane Technology School of Environment Tsinghua University College of Resources and Environment University of Chinese Academy of Sciences College of Environmental Science and Engineering Beijing Forestry University

膜生物反应器(membrane bioreactor, MBR)在中国工业废水处理和回收利用领域发挥了持续性重要作用。MBR技术在其成熟应用阶段的可持续发展有赖于工程和科研双方的互惠互动。本研究针对2003—2019年投入运营和在建的共计182座处理工业废... 详细信息

膜生物反应器(membrane bioreactor, MBR)在中国工业废水处理和回收利用领域发挥了持续性重要作用。MBR技术在其成熟应用阶段的可持续发展有赖于工程和科研双方的互惠互动。本研究针对2003—2019年投入运营和在建的共计182座处理工业废水的大型MBR工程(单体规模≥5000 m~3·d-1)进行了全面分析。随着MBR在各工业行业中的推广应用,累积处理规模迅速增长,超大型MBR工程在近期也得到快速发展。依据不同工业废水的特点,对处理工艺、污染物去除效率和实际运行参数进行了归纳,并与城镇污水处理进行了比较;在经济特征方面,对项目总投资、总占地面积、运行能耗等进行了分析。随着膜元件供应商和工程商的快速发展、政府项目不断增加,以及新型灵活的商业模式的发展,中国已形成一个充满活力的MBR市场。MBR技术目前多应用于各大经济带和缺水地区。考虑到工业废水处理和回收利用的巨大市场,可以预见未来MBR在中国各地的进一步推广应用。政策—经济和市场—技术两方面的驱动力表明MBR的发展与国家发展需求一致。为保持MBR的竞争力,本文基于调研和分析结果,对其在工程应用和科学研发两方面的发展进行了展望。

关键词：工程应用处理规模运行参数占地面积地理分布政策

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