检索结果-内蒙古大学图书馆

Space‐Confinement‐Induced Synthesis of Pyridinic‐ and Pyrrolic‐Nitrogen‐Doped Graphene for the Catalysis of Oxygen Reduction†

引用

Angewandte Chemie 2013年第45期125卷

作者： Wei Ding Zidong Wei Siguo Chen Xueqiang Qi Tao Yang Jinsong Hu Dong Wang Li‐Jun Wan Shahnaz Fatima Alvi Li Li The State Key Laboratory of Power Transmission Equipment and System Security and New Technology College of Chemistry and Chemical Engineering Chongqing University Shapingba 174 Chongqing (China) Institute of Chemistry The Chinese Academy of Sciences Beijing 100190 (China)

来源：评论

学校读者我要写书评

暂无评论

Rotation Speed Recovery Strategy Based On Variable Power Curve of Inertia Control from DFIG Wind Turbine

引用

IOP Conference Series: Earth and Environmental Science 2018年第1期192卷

作者： R Liu P Song X S Wang Z W Lin State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of Control and Computer Engineering North China Electric Power University Beijing 102206 PR China State Grid Jibei Electric Power Research Institute North China Electric Power Research Institute Co. Ltd. Beijing 100045 China Grid-connected Operation Technology for Wind-Solar Storage Hybrid System State Grid Corporation Key Laboratory Beijng 100045 China

With the increase of wind power capacity incorporated into the grid, the permeability of wind power increases continuously, which leads to the reduction of the equivalent inertia of the system. A new strategy of recovering rotor speed that increases the output power by modifying the variable power curve is proposed in this paper, which decreases the drop of the active power. So as to reduce the secondary frequency dips caused by the sudden drop of the active power when the speed restores. The paper optimizes the secondary frequency dips by modifying the variable power curve continuously. This article simulates this strategy through setting up a system by Simulink. Compared with the traditional recovery strategy, validity of the proposed strategy is demonstrated through simulation and analysis.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Rotation Speed Recovery Strategy Based On Particle Swarm Optimization for Variable Power Curve Optimization

引用

IOP Conference Series: Materials Science and engineering 2018年第3期439卷

作者： Rui Liu Peng Song Xiaosheng Wang Yang Cui Zhongwei Lin State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of Control and Computer Engineering North China Electric Power University Beijing 102206 PR China phone: *** State Grid Jibei Electric Power Research Institute North China Electric Power Research Institute Co. Ltd. Beijing 100045 China Grid-connected Operation Technology for Wind-Solar Storage Hybrid System State Grid Corporation Key Laboratory Beijng 100045 China

With the increase of wind power capacity incorporated into the grid, the permeability of wind power increases continuously, which leads to the reduction of the equivalent inertia of the system. Rotor speed recovery will cause the secondary frequency dips when DFIG uses rotor inertial control to participate in system frequency modulation. In order to optimize the secondary frequency dips, this paper uses PSO (Particle Swarm Optimization) to optimize the Parameters of Variable Power Functions on the basis of the previously proposed variable power curve strategy. This article simulates this strategy through setting up a system by Simulink. Simulate the results of optimization, compared with the traditional recovery strategy, validity of the proposed strategy is demonstrated through simulation and analysis.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Phyllotaxis-inspired nanosieves with multiplexed orbital angular momentum

arXiv

引用

arXiv 2021年

作者： Jin, Zhongwei Janoschka, David Deng, Junhong Ge, Lin Dreher, Pascal Frank, Bettina Hu, Guangwei Ni, Jincheng Yang, Yuanjie Li, Jing Yu, Changyuan Lei, Dangyuan Li, Guixin Xiao, Shumin Mei, Shengtao Giessen, Harald zu Heringdorf, Frank Meyer Qiu, Cheng-Wei Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore117583 Singapore College of Optical and Electronic Technology China Jiliang University Hangzhou310018 China University of Duisburg–Essen Lotharstrasse 1-21 Duisburg47057 Germany Department of Materials Science and Engineering Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen518055 China Beijing Qianjunyide Technology Co. Ltd. Beijing100031 China University of Stuttgart StuttgartD-70569 Germany School of Physics University of Electronic Science and Technology of China Chengdu611731 China Key Laboratory of Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing100190 China Department of Electronic and Information Engineering Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong Hong Kong Department of Materials Science and Engineering City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong Hong Kong State Key Laboratory on Tunable Laser Technology Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Shenzhen Graduate School Harbin Institute of Technology Shenzhen518055 China

Nanophotonic platforms such as metasurfaces, achieving arbitrary phase profiles within ultrathin thickness, emerge as miniaturized, ultracompact and kaleidoscopic optical vortex generators. However, it is often required to segment or interleave independent sub-array metasurfaces to multiplex optical vortices in a single nano-device, which in turn affects the device’s compactness and channel capacity. Here, inspired by phyllotaxis patterns in pine cones and sunflowers, we theoretically prove and experimentally report that multiple optical vortices can be produced in a single compact phyllotaxis nanosieve, both in free space and on a chip, where one meta-atom may contribute to many vortices simultaneously. The time-resolved dynamics of on-chip interference wavefronts between multiple plasmonic vortices was revealed by ultrafast time-resolved photoemission electron microscopy. Our nature-inspired optical vortex generator would facilitate various vortex-related optical applications, including structured wavefront shaping, free-space and plasmonic vortices, and high-capacity information metaphotonics. Copyright © 2021, The Authors. All rights reserved.

关键词： Plasmonics

来源：评论

学校读者我要写书评

暂无评论

All-Optical Non-Resonant Photoacoustic Spectroscopy for Multicomponent Gas Detection Based on Aseismic Photoacoustic Cell

SSRN

引用

SSRN 2023年

作者： Fu, Lujun Lu, Ping Pan, Yufeng Zhong, Yi Sima, Chaotan Wu, Qiang Zhang, Jiangshan Cui, Lingzhi Liu, Deming National Engineering Research Center for Next Generation Internet Access System School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan430074 China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhen518000 China Wuhan OV Optical Networking Technology Co. Ltd. Wuhan430073 China Faculty of Engineering and Environment Northumbria University Newcastle upon TyneNE1 8ST United Kingdom Department of Electronics and Information Engineering Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of NBC Protection for Civilian Beijing102205 China

An all-optical non-resonant photoacoustic spectroscopy system for multicomponent gas detection based on a silicon cantilever optical microphone (SCOM) and an aseismic photoacoustic cell is proposed and demonstrated. The SCOM has a high sensitivity of over 96.25 rad/Pa with sensitivity fluctuation less than ±1.56 dB between 5 Hz to 250 Hz. Besides, the minimal detectable pressure (MDP) of the sensor is 0.55 μPa·Hz-1/2 at 200 Hz, which indicates that the fabricated sensor has high sensitivity and low noise level. Six different gases of CO2, CO, CH4, C2H6, C2H4, C2H2 are detected at the frequency of 10 Hz, whose detection limits (1σ) are 20.89 ppb, 309.70 ppb, 498.32 ppb, 70.98 ppb, 384.45 ppb and 139.20 ppb, respectively. The system achieves high sensitivity and low detection limits for trace gas detection. In addition, the system exhibits seismic performance with suppressing vibration noise by 4.5 times, and achieves long-term stable operation. © 2023, The Authors. All rights reserved.

关键词： Photoacoustic spectroscopy

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to“Magnesium cationic cue enriched interfacial tissue microenvironment nurtures the osseointegration of gamma-irradiated allograft bone”[***.10C(April 2022)32-47]

引用

Bioactive Materials 2023年第2期20卷 165-165页

作者： Wenhao Wang Jie Shen Yuan Meng Miaoman Ye Shaozhang Lin Qi Zhao Le Wang Kenneth M.C.Cheung Shuilin Wu Yufeng Zheng Xuanyong Liu Paul K.Chu Kelvin W.K.Yeung Zhi-Yong Zhang Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University Guangdong Province Engineering Research Center for Biomedical EngineeringState Key Laboratory of Respiratory DiseaseThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou510150PR China Department of Orthopaedics and Traumatology The University of Hong Kong999077Hong KongChina Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma The University of Hong Kong Shenzhen HospitalShenzhen518053PR China Department of Orthopaedic Surgery The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou510150PR China Shenzhen Key Laboratory of Spine Surgery Department of Spine SurgeryPeking University Shenzhen HospitalShenzhen518036PR China Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer MaterialsSchool of Materials&EngineeringHubei UniversityWuhan430062PR China Ministry of Education Key Laboratory for Advanced Ceramics and Machining Technology School of Materials Science&EngineeringTianjin UniversityTianjin300352PR China State Key Laboratory for Turbulence and Complex System Department of Materials Science and EngineeringCollage of EngineeringPeking UniversityBeijing100871PR China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050PR China Department of Materials Science and Engineering City University of Hong Kong999077Hong KongChina

The authors regret a mistake of funding numbers in the Acknowledgment Section failed to be corrected during proof *** is the corrected funding statement in Acknowledgment SECTION This work was supported by the National Natural Science Foundation of China(NSFC)(Nos.81902189,81772354,82002303,31570980),Clinical Innovation Research Program of Guangzhou Regenerative Medicine and Health Guangdong laboratory(2018GZR0201002),National key Research and Development Plan(2018YFC1105103).

关键词： NSFC statement enriched

来源：评论

学校读者我要写书评

暂无评论

Threshold Switching Selectors: A Threshold Switching Selector Based on Highly Ordered Ag Nanodots for X-Point Memory Applications (Adv. Sci. 10/2019)

引用

Advanced Science 2019年第10期6卷 1970058-1970058页

作者： Qilin Hua Huaqiang Wu Bin Gao Meiran Zhao Yujia Li Xinyi Li Xiang Hou Meng-Fan (Marvin) Chang Peng Zhou He Qian Institute of Microelectronics Tsinghua University Beijing 100084 China State Key Laboratory of ASIC and System School of Microelectronics Fudan University Shanghai 200433 China Department of Electrical Engineering National Tsing Hua University Hsinchu 30013 Taiwan

来源：评论

学校读者我要写书评

暂无评论

Spatio-temporal Distribution of Drought in the Belt and Road Area During 1998–2015 Based on TRMM Precipitation Data

引用

Journal of Resources and Ecology 2017年第6期8卷 559-570页

作者： BAI Yongqing WANG Juanle WANG Yujie HAN Xuehua Bair Z. Tsydypov Altansukh Ochir Davaadorj Davaasuren State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China University of Chincse Academy of Sciences Beijing 100049 China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023 China Shandong University of Technology Zibo Shandong 255012 China Baikal Institute of Nature Management Siberian Branch Russian Academy of Sciences U lan-Ude 670047 Russia School of Engineering and Applied Sciences National University of Mongolia Ulaanbaatar city 210646 Mongolia Department of the Geography School of the Art ＆ Sciences National University of Mongolia Ulaanbaatar city 210646 Mongolia

Drought is a worldwide natural disaster that has long affected agricultural production as well as social and economic activities. Frequent droughts have been observed in the Belt and Road area, in which much of the agricultural land is concentrated in fragile ecological environment. Based on the Tropical Rainfall Measuring Mission Satellite（TRMM） 3 B43 precipitation data, we used the Precipitation Abnormity Percentage drought model to study the monthly spatio-temporal distribution of drought in south region of N50° of the Belt and Road area. It was observed that drought during winter was mainly distributed in Northeast Asia, Southeast Asia, and South Asia, while it was mainly distributed in Central Asia and West Asia during summer. The occurrence of historical droughts indicates an obvious seasonal cycle. The regional variations in drought were analyzed using the Breaks for Additive Season and Trend tool（BFAST） in six sub-regions according to the spatial distribution of six economic corridors in the Belt and Road area. The average drought conditions over the 18 years show a slight decreasing trend in Northeast Asia, West Asia, North Africa, South Asia, Central and Eastern Europe, and a slight increasing trend in Central Asia. However, it was a fluctuating pattern of first increasing and then decreasing in Southeast Asia. The results indicate that the total drought area in the Belt and Road region showed a general decreasing trend at a rate of 40,260 km^2 per year from 1998 to 2015.

关键词： drought distribution the Belt and Road TRMM Precipitation Abnormity Percentage BFAST

来源：评论

学校读者我要写书评

暂无评论

Lithium Metal Anodes: A Triple-Gradient Host for Long Cycling Lithium Metal Anodes at Ultrahigh Current Density (Small 30/2020)

引用

Small 2020年第30期16卷

作者： TrungHieu Le Qinghua Liang Ming Chen Ciqing Yang Zhihao Yu Jie Cheng Feiyu Kang Ying Yang State Key Laboratory of Control and Simulation of Power System and Generation Equipments Tsinghua University Beijing 100084 China Department of Chemical Engineering The University of Melbourne Parkville VIC 3010 Australia Zhejiang Yuyuan Energy Storage Technology Co. Ltd. Huzhou 313100 China Laboratory of Advanced Materials Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

来源：评论

学校读者我要写书评

暂无评论

Meet the challenges in the “Carbon Age”

引用

Carbon Research 2022年第1期1卷 1-2页

作者： Wu, Fengchang Li, Fangbai Zhao, Xiaoli Bolan, Nanthi S. Fu, Pingqing Lam, Su Shiung Mašek, Ondřej Ong, Hwai Chyuan Pan, Bo Qiu, Xueqing Rinklebe, Jörg Tsang, Daniel C. W. Van Zwieten, Lukas Vithanage, Meththika Wang, Shaobin Xing, Baoshan Zhang, Gan Wang, Hailong State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing China Institute of Eco-environmental and Soil Sciences Guangdong Academy of Sciences Guangzhou China School of Agriculture and Environment The University of Western Australia Perth Australia Institute of Surface-Earth System Science School of Earth System Science Tianjin University Tianjin China Higher Institution Centre of Excellence (HICoE) Institute of Tropical Aquaculture and Fisheries (AKUATROP) Universiti Malaysia Terengganu Kuala Nerus Malaysia School of GeoSciences University of Edinburgh Edinburgh UK School of Information Systems and Modelling University of Technology Sydney Sydney Australia Faculty of Environmental Science & Engineering Kunming University of Science & Technology Kunming China School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou China School of Architecture and Civil Engineering University of Wuppertal Wuppertal Germany Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Kowloon Hong Kong China New South Wales Department of Primary Industries Wollongbar Australia Ecosphere Resilience Research Center University of Sri Jayewardenepura Nugegoda Sri Lanka School of Chemical Engineering and Advanced Materials University of Adelaide Adelaide Australia Stockbridge School of Agriculture University of Massachusetts Amherst USA Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China School of Environmental and Chemical Engineering Foshan University Foshan China

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：