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Citizen science meets eDNA:A new boom in research exploring urban wetland biodiversity

Environmental Science and Ecotechnology 2023年第4期16卷 65-68页

作者： Haowen Zhang Jianghua Yang Lijuan Zhang Xueping Gu Xiaowei Zhang Nanjing Foreign Language School 30 East Beijing RoadXuanwu DistrictNanjing210008China State Key Laboratory of Pollution Control&Resource School of the EnvironmentNanjing UniversityNanjing University Xianlin Campus163 Xianlin AvenueNanjing210023China Jiangsu Province Ecology and Environment Protection Key Laboratory of Chemical Safety and Health Risk Nanjing210023China

Summary The biodiversity of urban wetlands provides crucial ecosystem services and contributes to cities'***,such ecosystems are threatened by multiple stressors,such as climate change,environmental pollution,and species *** participation in biodiversity and ecological conservation is becoming an increasingly well-developed and valued approach worldwide.

关键词： biodiversity ecosystems pollution

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Flow in Porous Media in the Energy Transition

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Engineering 2022年第7期8卷 10-14页

作者： Martin J.Blunt Qingyang Lin Department of Earth Science and Engineering Imperial College LondonLondon SW72BPUK State Key Laboratory of Clean Energy Utilization State Environmental ProtectionEngineering Center for Coal-Fired Air Pollution ControlZhejiang UniversityHangzhou 310027China

*** context Flow in porous media is encountered in a wide variety of natural and engineered settings,including gas exchange in lungs and blood vessels,water extraction from underground aquifers,hydrocarbon production,and microfluidics in drug delivery and food *** rock is a porous medium that holds water and hydrocarbons,and is a potential storage site for carbon dioxide(CO_(2))and *** manufactured devices also contain porous media to allow the transport of gases and water,including fuel cells,electrolyzers,and electrocatalysts for CO_(2) *** performance is limited by how rapidly two fluid phases can flow through a porous layer.

关键词： underground rock setting

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Performance Analysis of Robust Tightly Coupled GNSS/INS Integration Positioning Based on M Estimation in Challenging Environments

Performance Analysis of Robust Tightly Coupled GNSS/INS Inte...

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第十三届中国卫星导航年会

作者： Yingying Jiang Shuguo Pan Qian Meng Min Zhang Wang Gao Chun Ma School of Instrument Science and Engineering Southeast University State Key Laboratory of Smart Grid Protection and Control Nari Group Corporation

The phenomena of limited satellite visibility and multipath is serious in challenging environments,which causes to decrease of the positioning accuracy *** effective solution is tightly coupled integration of Global Navigation Satellite Systems(GNSS) and Inertial Navigation System(INS) based on robust M ***,the robust performance is directly influenced by both the selection of equivalent weight functions and the INS accuracy *** this paper,theoretical analysis and experiment validation of positioning accuracy and reliability for the robust integration system are implemented under the condition of various equivalent weight functions and different INS ***,for constructing equivalent least square form of EKF,we combine classical EKF observation equation with redundant observation equation established by predicted state and corresponding covariance in propagation ***,robust extended Kalman filter(REKF) algorithm which is based on M estimation is introduced for purpose of weakening the influence of faults on ***,the features of three typical equivalent weight functions(Huber,Tukey,IGG-Ⅲ) are analyzed ***,a simulation experiment platform is built to analyze the influence of the choice of equivalent weight functions and the IMU grades on positioning accuracy and reliability,which is realized by integrating GNSS and various grades IMU to locate with three REKF solutions against traditional *** experimental results show significant enhancements for REKF based on M estimation in terms of precision and reliability of tightly coupled ***,in the setting failure scenario,the solution scheme based on IGG-Ⅲ equivalent weight function can obtain the optimal robust effect in comparison with REKF(Huber) and REKF(Tukey),whose horizontal positioning accuracy is kept within-0.5 m ～ 0.5 m and vertical positioning accuracy is no more than 1 ***,compared with consumer grad

关键词： Extended Kalman Filter Equivalent Least Square M Estimation Equivalent Weight Function INS

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Disclosing the intrinsic nature of efficient removal of antibiotics in N/S dual-doped porous carbon-based materials: The manipulation of internal electric field

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Chemosphere 2024年 355卷 141788页

作者： Wang, Tao He, Yujie Zhao, Zhongjing Zhao, Zhonghua Guo, Xiaochun Lu, Shaoyong Zhang, Lu State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing210008 China Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China National Engineering Laboratory for Lake Pollution Control and Ecological Restoration State Environment Protection Key Laboratory for Lake Pollution Control State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu-SEPSORSLD State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China

N/S co-doping has emerged as a prevailing strategy for carbon-based adsorbents to facilitate the antibiotic removal efficiency. Nevertheless, the underlying interplay among N, S, and their adjacent vacancy defects remains overlooked. Herein, we present a novel in situ strategy for fabricating pyridinic-N dominated and S dual-doped porous carbon adsorbent with rich vacancy defects (VNSC). The experimental results revealed that N (acting as the electron donor) and S (acting as the electron acceptor) form an internal electric field (IEF), with a stronger IEF generated between pyridinic-N and S, while their adjacent vacancy defects activate carbon π electrons, thus enhancing the charge transfer of the IEF. Density functional theory (DFT) calculations further demonstrated that the rich charge transfer in the IEF facilitated the π-π electron donor-acceptor (EDA) interaction between VNSC and tetracycline (TC) as well as norfloxacin (NOR), and thus is the key to adsorption performance of VNSC. Consequently, VNSC exhibited high adsorption capacities toward TC (573.1 mg g−1) and NOR (517.0 mg g−1), and its potential for environmental applications was demonstrated by interference, environmentally relevant concentrations, fixed-bed column, and regeneration tests. This work discloses the natures of adsorption capacity for N/S dual-doped carbon-based materials for antibiotics. © 2024 Elsevier Ltd

关键词： Antibiotics

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Research on Coordination Strategy of Emergency and Correction control under High Proportion of New Energy Connected to Power Grid

Research on Coordination Strategy of Emergency and Correctio...

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IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Fusuo Liu Hui Huang Haijun Chang Xuelian Wu Chao Wang State Key Laboratory of Smart Grid Protection and Control NARI Group Corporation/State Grid Electric Power Research Institute Nanjin China

With the large-scale access of new energy sources, the operation mode and the uncertainty factors of the power grid increase, meanwhile the short-term power shock has an increasing impact, which exacerbates the complexity of the system frequency response characteristics and the difference in space-time distribution. Based on the analysis of principles and adaptability of emergency control and correction control, this paper comprehensively considers the operation mode and new energy access, and proposes a centralized control decision-making method based on model and trajectory driving from the perspective of global frequency control. The method also considers the continuously adjustable control resources and low voltage ride through of new energy. Finally, the practicality of the proposed method is verified based on the actual power grid simulation.

关键词： Low voltage Analytical models Adaptation models Uncertainty Decision making Power grids Trajectory

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A Frequency control Method that Allows Regulation Sharing among Interconnected control Areas 9

A Frequency Control Method that Allows Regulation Sharing am...

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9th Asia Conference on Power and Electrical Engineering, ACPEE 2024

作者： Wang, Lifeng Teng, Xiaobi Lin, Hua Song, Bingbing Qin, Kangping Li, Yutong Chen, Zijie Dispatch and Control Branch Center East China Branch of State Grid Corporation of China Shanghai China SPIC ShanDong Energy Marketing CO. LTD Jinan China Shanghai Jiao Tong University College of Smart Energy Shanghai China Ministry of Education Shanghai Jiao Tong University Key Laboratory of Control of Power Transmission and Conversion Shanghai China

ISBN: (纸本)9798350309638

Current large-scale interconnected power grids predominantly adopt the Tie-Line Bias control (TBC), where each control area is independently responsible for the power balance within its region. However, under this control mode, if a control area within the interconnected grid lacks sufficient frequency regulation capacity, the frequency of the entire interconnected grid can be affected. To allow sharing of frequency regulation capacity across multiple control areas, this article proposes a market scheme for inter-area frequency regulation capacity sharing, along with a supporting frequency control method for interconnected power grids. After meeting their own frequency regulation capacity requirements, control areas can contribute surplus capacity to a regional frequency regulation capacity market. The awarded capacity is then centrally dispatched by the regional grid, with each control area using the TBC mode and the regional grid employing the Flat Frequency control(FFC) mode. Simulation results indicate that, compared to the traditional TBC mode, our proposed scheme effectively improves the frequency quality of the interconnected grid and achieves optimized resource allocation. © 2024 IEEE.

关键词： Electric power system control

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A Task-Parallel and Reconfigurable FPGA-Based Hardware Implementation of Extreme Learning Machine 22

A Task-Parallel and Reconfigurable FPGA-Based Hardware Imple...

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3rd Asia Service Sciences and Software Engineering Conference, ASSE 2022

作者： Huang, Hui Rong, Hai-Jun Yang, Zhao-Xu State Key Laboratory for Strength and Vibration of Mechanical Structures Shaanxi Key Laboratory of Environment and Control for Flight Vehicle School of Aerospace Engineering Xi an Jiaotong University Xi an Shaanxi710049 China State Key Laboratory of Internet of Things for Smart City Department of Electromechanical Engineering University of Macau Avenida da Universidade Taipa China

ISBN: (纸本)9781450387453

Extreme learning machine (ELM) is an emerging machine learning algorithm and widely used in various real-world applications due to its extremely fast training speed, good generalization and universal approximation capability. In order to further explore the ELM to be used in practical embedded systems, a task-parallel and reconfigurable FPGA-based hardware architecture of ELM algorithm is presented in this paper. The proposed architecture performs the on-chip machine learning for both training and prediction phases which are implemented parameterizably based on the reconfigurable parameters. Meanwhile, the task-parallel efforts are focused on the training phase to improve the computational efficiency by resolving the serial computations into subtasks for task-parallel computations. In addition, the on-chip block RAMs reuse scheme is also applied in proposed architecture for saving on-chip resource consumption. The experimental results show that the proposed ELM architecture can achieve similar accuracy compared with floating-point implementation on Matlab and outperform the recently published ELM implementations in terms of hardware performance, power consumption and resource utilization. © 2022 Association for Computing Machinery.

关键词： Field programmable gate arrays (FPGA)

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Optimization of water-urban-agricultural-ecological land use pattern:A case study of Guanzhong Basin in the southern Loess Plateau of Shaanxi Province,China

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China Geology 2024年第3期7卷 480-493页

作者： Sai Wang Bin Wu Hai-xue Li Min-min Zhao Lei Yuan Xi Wu Tao Ma Fu-cheng Li Shuang-bao Han Center for Hydrogeology and Environmental Geology Survey China Geological SurveyMinistry of Natural ResourcesTianjin 300304China Center for Groundwater Exploration and Development Engineering Research China Geological SurveyMinistry of Natural ResourcesTianjin 300304China School of Environmental Studies China University of GeosciencesWuhan430078China State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic ScienceChina University of GeosciencesWuhan430078China

Extensive land use will cause many environmental *** is an urgent task to improve land use efficiency and optimize land use *** recent years,due to the flow decrease,the Guanzhong Basin in Shaanxi Province is confronted with the problem of insufficient water resources *** on the Coupled Ground-Water and Surface-Water Flow Model(GSFLOW),this paper evaluates the response of water resources in the basin to changes in land use patterns,optimizes the land use pattern,improves the ecological and economic benefits,and the efficiency of various spatial development,providing a reference for ecological protection and high-quality development of the Yellow River *** research shows that the land use pattern in the Guanzhong Basin should be further *** the condition of considering ecological and economic development,the percentage change of the optimum area of farmland,forest,grassland,water area,and urban area compared with the current land use area ratio is+2.3,+2.4,-6.1,+0.2,and+1.6,*** economic and ecological value of land increases by14.1%and 3.1%,respectively,and the number of water resources can increase by 2.5%.

关键词： Coupled Ground-Water and Surface-Water Flow Model(GSFLOW) Land use patterns Water resources optimization Ecological and economic benefits Coupling model Hydrological environmental engineering Guanzhong Basin Southern Loess Plateau Yellow River basin

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Effective control of the rice blast pathogen using Cu-doped ZIF-8 nanoparticles as a green nanopesticide

Effective control of the rice blast pathogen using Cu-doped ...

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2024年亚洲植物病理学大会

作者： Dingyang Zhang Shujing Liang Nan Jiang Wenhui Zheng State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops College of Plant ProtectionFujian Agriculture and Forestry University Key Laboratory of Biopesticide and Chemical Biology Ministry of EducationCollege of Plant ProtectionFujian Agriculture and Forestry University

The development of efficient and environmentally benign antimicrobial agents is urgently needed to mitigate the escalating environmental pollution caused by conventional *** study presents the successful synthesis of ... 详细信息

关键词： Effective control of the rice blast pathogen using Cu-doped ZIF-8 nanoparticles as a green nanopesticide ZIF

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Applicability Analysis of Distance protection for the Line Integrated with High Proportional Wind Farm 8

Applicability Analysis of Distance Protection for the Line I...

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8th Asia Conference on Power and Electrical Engineering, ACPEE 2023

作者： Zhang, Yongwu Yao, Cheng Li, Dayong Huang, Xiaoxiao Xie, Zhongrun He, Jiawei Li, Bin Center State Grid Tianjin Electric Power Company Electric Power Dispatching and Control Tianjin China State Grid Tianjin Electric Power Company Electric Power Research Institute Tianjin China Tianjin University Key Laboratory of Smart Grid of Ministry of Education Tianjin China

ISBN: (纸本)9798350345520

The performance of conventional protections is serious challenged by different fault characteristics of wind turbine, compared to the synchronous generators. The existing studies can only illustrate the applicability of protections to the renewable energy transmission system through qualitative analysis or extensive simulations. This paper proposes a quantitative evaluation method for distance protection applicability in wind power transmission system. Firstly, by deriving the fault current of doubly-fed induction generators, the Fourier algorithm error of the fundamental frequency current under the influence of frequency deviation phenomenon is calculated. Secondly, based on the analysis of the measured impedance error caused by the Fourier algorithm error, the action accuracy of the distance protection under different operation states and fault conditions are obtained. In particular, the protection applicability under different wind power ratios is evaluated for the wind power transmission system bundled with synchronous generators. Finally, a real time simulation model of wind power transmission system is built based on RTDS platform, and extensive simulation cases are carried out to verify the validity of the proposed method. © 2023 IEEE.

关键词： Errors

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