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第四届全国核化学与放射化学青年学术研讨会

作者： Hongjuan Liu Shuibo Xie Tiancheng Wang Yingjiu Liu Taotao Zeng Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallur Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallur Institute of Nuclear Science and Technology University of South China Hengyang 421001 P.R.China Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology University of So

A novel poly(β-Cyclodextrin)/bentonite composite (β-CD/BNC) was successfully prepared through graft polymerisation by using ammonium persulphate-sodium bisulphate as initiators, and characterized by FT-IR, EDS and *...

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Quadratic contact point semimetal: Theory and material realization

arXiv

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arXiv 2018年

作者： Zhu, Ziming Liu, Ying Yu, Zhi-Ming Wang, Shan-Shan Zhao, Y.X. Feng, Yuanping Sheng, Xian-Lei Yang, Shengyuan A. Research Laboratory for Quantum Materials Singapore University of Technology and Design Singapore487372 Singapore 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 Changsha410081 China National Laboratory of Solid State Microstructures Department of Physics Nanjing University Nanjing210093 China Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing210093 China Department of Physics National University of Singapore Singapore117542 Singapore Beihang University Beijing100191 China Center for Quantum Transport and Thermal Energy Science School of Physics and Technology Nanjing Normal University Nanjing210023 China

Most electronic properties of metals are determined solely by the low-energy states around the Fermi level, and for topological metals/semimetals, these low-energy states become distinct because of their unusual energy dispersion and emergent pseudospin degree of freedom. Here, we propose a class of materials which are termed as quadratic contact point (QCP) semimetals. In these materials, the conduction and valence bands contact at isolated points in the Brillouin zone, around which the band dispersions are quadratic along all three directions. We show that in the absence/presence of spin-orbit coupling, there may exist triply-/quadruply-degenerate QCPs that are protected by the crystalline symmetry. We construct effective models to characterize the low-energy fermions near these QCPs. Under strong magnetic field, unlike the usual 3D electron gas, there appear unconventional features in the Landau spectrum. The QCP semimetal phase is adjacent to a variety of topological phases. For example, by breaking symmetries via Zeeman field or lattice strain, it can be transformed into a Weyl semimetal with Weyl and double Weyl points, a 2topological insulator/metal, or a Dirac semimetal. Via first-principles calculations, we identify realistic materials Cu2Se and RhAs3as candidates for QCP semimetals. Copyright © 2018, The Authors. All rights reserved.

关键词： Degrees of freedom (mechanics)

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Oriented Gold Nanorod Arrays: Self‐Assembly and Optoelectronic Applications

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Angewandte Chemie 2019年第35期131卷

作者： Wenbo Wei Feng Bai Hongyou Fan Key Laboratory for Special Functional Materials of Ministry of Education National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology School of Materials Science and Engineering and Collaborative Innovation Center of Nano Functional Materials and Applications Henan University Kaifeng 475004 China Department of Chemical and Biological Engineering The University of New Mexico Albuquerque NM 87131 USA Advanced Materials Laboratory Sandia National Laboratories Albuquerque NM 87106 USA Center for Integrated Nanotechnologies Sandia National Laboratories Albuquerque NM 87185 USA

Self‐assembly of anisotropic plasmonic nanomaterials into ordered superstructures has become popular in nanoscience because of their unique anisotropic optical and electronic properties. Gold nanorods (GNRs) are a well‐defined functional building block for fabrication of these superstructures. They possess important anisotropic plasmonic characteristics that result from strong local electric field and are responsive to visible and near‐IR light. There are recent examples of assembling the GNRs into ordered arrays or superstructures through processes such as solvent evaporation and interfacial assembly. In this Minireview, recent progress in the development of the self‐assembled GNR arrays is described, with focus on the formation of oriented GNR arrays on substrates. key driving forces are discussed, and different strategies and self‐assembly processes of forming oriented GNR arrays are presented. The applications of the oriented GNR arrays in optoelectronic devices are also overviewed, especially surface enhanced Raman scattering (SERS).

关键词： Gold-Nanostäbchen Nanopartikel Oberflächenplasmonenresonanz Selbstorganisation SERS

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The charging and discharging balance control strategy of power batteries for hybrid energy storage

The charging and discharging balance control strategy of pow...

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2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2016

作者： Ren, Zhou Lu, Junyong Wang, Guangsen Long, Xinlin Xiao, Zhang Chao, Li National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan China

ISBN: (纸本)9781509020676

Shipboard hybrid energy storage power system includes tens of thousands of single batteries. The performance of each single cell can't be completely consistent. Small differences will gradually increase after repeated charging and discharging, which may lead to a sharp decline of the performance and the cycle life of the battery. For imbalance performance between each single cell of shipboard hybrid energy storage, this paper proposes a multi-mode balance control method, which integrates fuzzy PID charging equalizer, sequential discharging equalizer and floating charging equalizer, in order to reduce the differences between the battery packs. According to the proposed balance control strategy, this paper takes an experiment on the battery packs for hybrid energy storage which are composed of lead-acid batteries, and achieves a better balance result. © 2016 IEEE.

关键词： Equalizers

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Quantum Dots: Single Halide Perovskite/Semiconductor Core/Shell Quantum Dots with Ultrastability and Nonblinking Properties (Adv. Sci. 18/2019)

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Advanced science 2019年第18期6卷 1970107-1970107页

作者： Xiaosheng Tang Jie Yang Shiqi Li Zhengzheng Liu Zhiping Hu Jiongyue Hao Juan Du Yuxin Leng Haiyan Qin Xing Lin Yue Lin Yuxi Tian Miao Zhou Qihua Xiong Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education) College of Optoelectronic Engineering Chongqing University Chongqing 400044 China State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China Center for Chemistry of Nover and High-Performance Materials and Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China School of Chemistry and Chemical Engineering Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Key Laboratory of Vehicle Emissions Control Nanjing University Nanjing 210023 China Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore

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A global survey on the use of the international classification of diseases codes for metabolic dysfunction-associated fatty liver disease

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Hepatology international 2024年第4期18卷 1178-1201页

作者： Huai Zhang Giovanni Targher Christopher D Byrne Seung Up Kim Vincent Wai-Sun Wong Luca Valenti Myer Glickman Jaime Ponce Christos S Mantzoros Javier Crespo Henning Gronbaek Wah Yang Mohammed Eslam Robert J Wong Mariana Verdelho Machado Ming-Lung Yu Omar M Ghanem Takeshi Okanoue Jun-Feng Liu Yong-Ho Lee Xiao-Yuan Xu Qiuwei Pan Meili Sui Amedeo Lonardo Yusuf Yilmaz Li-Yong Zhu Christophe Moreno Luca Miele Monica Lupsor-Platon Lei Zhao Teresa LeAnn LaMasters Robert G Gish Huijie Zhang Marius Nedelcu Wah Kheong Chan Ming-Feng Xia Fernando Bril Jun-Ping Shi Christian Datz Stefano Romeo Jian Sun Dan Liu Silvia Sookoian Yi-Min Mao Nahum Méndez-Sánchez Xiao-Yan Wang Nikolaos T Pyrsopoulos Jian-Gao Fan Yasser Fouad Dan-Qin Sun Cosimo Giannini Jin Chai Ze-Feng Xia Dae Won Jun Guo-Jing Li Sombat Treeprasertsuk Ying-Xu Li Tan To Cheung Faming Zhang George Boon-Bee Goh Masato Furuhashi Wai-Kay Seto Hui Huang Anna Di Sessa Qing-Hong Li Evangelos Cholongitas Le Zhang Themis Reverbel Silveira Giada Sebastiani Leon A Adams Wei Chen Xiaolong Qi Ivan Rankovic Victor De Ledinghen Wen-Jie Lv Masahide Hamaguchi Radwan Kassir Dirk Müller-Wieland Manuel Romero-Gomez Ying Xu Yi-Cong Xu Shi-Yao Chen Mohammad Kermansaravi Mohammad Shafi Kuchay Sander Lefere Chetan Parmar Gregory Y H Lip Chun-Jen Liu Fredrik Åberg George Lau Jacob George Shiv Kumar Sarin Jing-Ya Zhou Ming-Hua Zheng Department of Medical Record the First Affiliated Hospital of Wenzhou Medical University Wenzhou China. Metabolic Diseases Research Unit IRCCS Sacro Cuore - Don Calabria Hospital Negrar di Valpolicella Italy. Southampton National Institute for Health and Care Research Biomedical Research Centre University Hospital Southampton and University of Southampton Southampton General Hospital Southampton UK. Department of Internal Medicine Yonsei University Seoul Korea. Department of Medicine and Therapeutics The Chinese University of Hong Kong Hong Kong China. Department of Pathophysiology and Transplantation University of Milan Milan Italy. Precision Medicine Biological Resource Center Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milan Italy. Health Analysis and Pandemic Insight Division Office for National Statistics London UK. Department Bariatric Surgery CHI Memorial Hospital Chattanooga TN USA. Beth Israel Deaconess Medical Center and Boston VA Healthcare System Harvard Medical School Boston MA USA. Gastroenterology and Hepatology Department Clinical and Traslational Research in Digestive Diseases Valdecilla Research Institute (IDIVAL) Marqués de Valdecilla University Hospital Santander Spain. Department of Hepatology and Gastroenterology Aarhus University Hospital 8200 Aarhus N Denmark. Department of Metabolic and Bariatric Surgery The First Affiliated Hospital of Jinan University Guangzhou China. Storr Liver Centre Westmead Institute for Medical Research Westmead Hospital and University of Sydney Sydney NSW Australia. Division of Gastroenterology and Hepatology Stanford University School of Medicine Veterans Affairs Palo Alto Healthcare System Palo Alto USA. Department of Gastroenterology Hospital de Vila Franca de Xira Vila Franca de Xira Portugal. School of Medicine and Doctoral Program of Clinical and Experimental Medicine College of Medicine and Center of Excellence for Metabolic Associated Fatty Liver Disease National Sun Yat-sen Univers

BACKGROUND:With the implementation of the 11th edition of the International Classification of Diseases (ICD-11) and the publication of the metabolic dysfunction-associated fatty liver disease (MAFLD) nomenclature in 2020, it is important to establish consensus for the coding of MAFLD in ICD-11. This will inform subsequent revisions of ICD-11. METHODS:Using the Qualtrics XM and WJX platforms, questionnaires were sent online to MAFLD-ICD-11 coding collaborators, authors of papers, and relevant association members. RESULTS:A total of 890 international experts in various fields from 61 countries responded to the survey. We also achieved full coverage of provincial-level administrative regions in China. 77.1% of respondents agreed that MAFLD should be represented in ICD-11 by updating NAFLD, with no significant regional differences (77.3% in Asia and 76.6% in non-Asia, p = 0.819). Over 80% of respondents agreed or somewhat agreed with the need to assign specific codes for progressive stages of MAFLD (i.e. steatohepatitis) (92.2%), MAFLD combined with comorbidities (84.1%), or MAFLD subtypes (i.e., lean, overweight/obese, and diabetic) (86.1%). CONCLUSIONS:This global survey by a collaborative panel of clinical, coding, health management and policy experts, indicates agreement that MAFLD should be coded in ICD-11. The data serves as a foundation for corresponding adjustments in the ICD-11 revision.

关键词： Global survey ICD-11 MAFLD

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An online tracking-control strategy compositing disturbance-observer for hypersonic vehicles 35

An online tracking-control strategy compositing disturbance-...

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第35届中国控制会议

作者： Liu Zhibing Qiao Jianzhong Li Wenshuo Guo Lei Zhang Peixi School of Automation Science and Electrical Engineering Beihang University National Key Laboratory of Aerospace Intelligent Control Technology Beijing Aerospace Automatic Control Institute

ISBN: (纸本)9781509009107

A novel type of control scheme compositing an online tracking method and disturbance-observer is proposed for a hypersonic cruise vehicle with kinds of disturbances including flexible states, aerodynamic uncertainties, unmodeled dynamics and external disturbance. The online control method is provided on the basis of using aeropropulsive as well as elevator-to-lift couplings to design the controller without strategically neglecting or reducing the nonminimum-phase characteristic. Through an ingenious transformation, the control commands and reference trajectories are obtained simultaneously. The flexible dynamics on the pitch-rate tunnel is estimated by a state observer. A nonlinear disturbance observer is designed to estimate the disturbance and enhance the robustness of the composite scheme, then all kinds of disturbances are compensated or rejected effectively.

关键词： Hypersonic vehicles Tracking control strategy Disturbance observer Composite controller

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Spacecraft Autonomous Navigation System Based on SINS/Ultraviolet Sensor/Star Sensor

Spacecraft Autonomous Navigation System Based on SINS/Ultrav...

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2016 IEEE Chinese Guidance, Navigation and control Conference (IEEE CGNCC2016)

作者： JI Xiaoqin GAO Lei LIU Zhun ZONG Hua Beijing Aerospace Automatic Control Institute National Key Laboratory of Science and Technology on Aerospace Intelligence Control

ISBN: (纸本)9781467383196

Aiming at the long time in-orbit navigation of spacecraft,a fully autonomous navigation system based on SINS/Ultraviolet sensor/Star sensor is proposed With the Ultraviolet sensor for positioning and the Star sensor for attitude determination,a higher navigation precision can be reached Then the state model and the measurement model for this integrated navigation system are constructed in the inertial *** spacecraft attitude is represented by the MRPs in these models,for large initial misalignment angle or large angle maneuver as orbit *** last,the EKF and UKF filter method are used for both low orbit and high orbit *** simulation results show that the positioning accuracy is as high as310 m even for geosynchronous orbit spacecraft.

关键词： EKF UKF filter Spacecraft Autonomous Navigation System Based on SINS/Ultraviolet Sensor/Star Sensor

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controlling the magnetic anisotropy in epitaxial Y3Fe5O12 films by manganese doping

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Physical Review B 2017年第22期96卷 224403-224403页

作者： C. T. Wang X. F. Liang Y. Zhang X. Liang Y. P. Zhu J. Qin Y. Gao B. Peng N. X. Sun L. Bi National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of China Chengdu 610054 China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of China Chengdu 610054 China Department of Electrical and Computer Engineering Northeastern University 360 Huntington Avenue Boston Massachusetts 02115 USA Winchester Technologies LLC Burlington Massachusetts 01803 USA

controlling the magnetic anisotropy in epitaxial Y3Fe5O12 (YIG) thin films is critical for magnonic and photonic device applications. In this paper, we report the crystal structure, magnetic properties, and magnetic anisotropy of epitaxial Y3(Fe5−xMnx)O12 (Mn:YIG) thin films grown on Gd3Ga5O12 (111) (GGG) substrates by pulsed-laser deposition. Mn doping is observed to strongly enhance the magnetoelastic coefficient of YIG thin films, which leads to large tunability of the thin film magnetic anisotropy by lattice strain. With increasing Mn concentration from x=0 to x=1.25, a continuous increase of out-of-plane magnetic anisotropy ranging from −644.4 Oe to 1337.5 Oe is observed. In particular, a perpendicular magnetic anisotropy (PMA) is achieved in Mn:YIG thin films with a high Mn concentration of x=1.12. Ferromagnetic resonance (FMR) measurements show low FMR linewidths of 3.4 Oe to 129 Oe at 9.5 GHz in Mn:YIG thin films. Our paper demonstrates manganese doping as an effective way to enhance the magnetoelastic anisotropy of YIG thin films by strain, which is useful for magnonic and magneto-optical device applications.

关键词： Jahn-Teller effect Magnetic anisotropy Magnetoelastic effect Spintronics

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Apodized grating coupler using fully-etched nanostructures

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Chinese Physics B 2016年第8期25卷 211-215页

作者：武华李冲李智勇郭霞 Photonic Device Research Laboratory College of Electronic Information and Control Engineering Beijing University of Technology College of Physics and Electronic Information Gan Nan Normal University State Key Laboratory for Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences School of Science Minzu University of China

A two-dimensional apodized grating coupler for interfacing between single-mode fiber and photonic circuit is demonstrated in order to bridge the mode gap between the grating coupler and optical fiber. The grating grooves of the grating couplers are realized by columns of fully etched nanostructures, which are utilized to digitally tailor the effective refractive index of each groove in order to obtain the Gaussian-like output diffractive mode and then enhance the coupling *** with that of the uniform grating coupler, the coupling efficiency of the apodized grating coupler is increased by 4.3% and 5.7%, respectively, for the nanoholes and nanorectangles as refractive index tunes layer.

关键词： grating couplers equivalent refractive index mode matching coupling efficiency

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