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Review on recent progress in on-line monitoring technology for atmospheric pollution source emissions in China

Journal of Environmental sciences 2023年第1期123卷 367-386页

作者： Huanqin Wang Jitong Zhou Xue Li Qiang Ling Hongyuan Wei Lei Gao Ying He Ming Zhu Xiao Xiao Youjiang Liu Shan Li Chilai Chen Guotao Duan Zhimin Peng Peili Zhou Yufeng Duan Jianbing Wang Tongzhu Yu Yixin Yang Jiguang Wang Zhen Zhou Huaqiao Gui Yanjun Ding State Key Laboratory of Transducer Technology Institute of Intelligent MachinesHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Institute of Mass Spectrometry and Atmospheric Environment Jinan UniversityGuangzhou 510632China Department of Automation University of Science and Technology of ChinaHefei 230027China China Automotive Technology and Research Center Tianjin 300300China Institute of Solid State Physics Chinese Academy of SciencesHefei 230031China Key Laboratory of Environmental Optics and Technology Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031China School of Electronic Information and Communications Huazhong University of Science and TechnologyWuhan 430074China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Power Systems Department of Energy and Power EngineeringTsinghua UniversityBeijing 100084China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096China School of Chemical and Environmental Engineering China University of Mining and Technology(Beijing)Beijing 100083China CAS Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

Emissions from mobile sources and stationary sources contribute to atmospheric pollution in China,and its components,which include ultrafine particles(UFPs),volatile organic compounds(VOCs),and other reactive gases,such as NH3and NOx,are the most harmful to human *** has released various regulations and standards to address pollution from mobile and stationary ***,it is urgent to develop online monitoring technology for atmospheric pollution source *** study provides an overview of the main progress in mobile and stationary source monitoring technology in China and describes the comprehensive application of some typical instruments in vital areas in recent *** instruments have been applied to monitor emissions from motor vehicles,ships,airports,the chemical industry,and electric power *** only has the level of atmospheric environment monitoring technology and equipment been improving,but relevant regulations and standards have also been constantly ***,the developed instruments can provide scientific assistance for the successful implementation of *** to the potential problem areas in atmospheric pollution in China,some research hotspots and future trends of atmospheric online monitoring technology are ***,more advanced atmospheric online monitoring technology will contribute to a comprehensive understanding of atmospheric pollution and improve environmental monitoring capacity.

关键词： Atmospheric pollution Mobile sources Stationary sources On-line monitoring technology

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A Constant Potential Circuit for electrochemical Detection of Tear Glucose 4

A Constant Potential Circuit for Electrochemical Detection o...

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4th International Conference on Circuits, Systems and Simulation, ICCSS 2021

作者： Zhao, Shunan Xie, Yi Zhu, Zhuoya Zhao, Zhiwei Lei, Wei Wang, Zhifei Yang, Ke Southeast University School of Electronic Science and Engineering Nanjing China Science and Technology on Electro-optic Control Laboratory Luoyang China

ISBN: (纸本)9781728167527

Diabetes is a disease with high incidence rate and incurable disease. According to the research at home and abroad, there is a linear relationship between tear glucose and blood glucose. Therefore, this paper proposed a method to obtain the blood glucose concentration by measuring the tear glucose. A constant potential circuit based on electrochemical three-electrode system for detecting tear glucose concentration was designed. The circuit included voltage inverter, stabilized voltage, negative feedback and microcurrent amplification module. Multisim simulation results showed that the circuit had low noise and better amplification accuracy. The PCB test board was designed and processed by Altium Designer software. The output voltage of the circuit was 100mV up to 2300mV when detecting the glucose solution from 0.1~0.6mmol/L. The experimental results showed that the circuit could be applied in the electrochemical three- electrode system. © 2021 IEEE.

关键词： Blood

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Beacon-enabled TDMA Ultraviolet Communication Network Design and Realization

Beacon-enabled TDMA Ultraviolet Communication Network Design...

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International Symposium on Communication Systems, Networks and Digital Signal Processing, CNSDSP

作者： Yuchen Pan Yubo Zhang Fei Long Ping Li Haotian Shi Jiazhao Shi Hanlin Xiao Chen Gong Zhengyuan Xu key Laboratory of Wireless-Optical Communications Chinese Academy of Sciences School of Information Science and Technology University of Science and Technology of China Hefei Anhui China Xi'an Modern Control Technology Research Institute Xi'an

ISBN: (数字)9798350348743

ISBN: (纸本)9798350348750

Non-line of sight (NLOS) ultraviolet (UV) scattering communication can serve as a good candidate for outdoor optical wireless communication (OWC) under non-perfect transmitter-receiver alignment and radio silence. We design and demon-strate a NLOS UV scattering communication network, where a beacon-enabled time-division multiple access (TDMA) multi-node transmission protocol is developed. In our system, light emitting diode (LED) and photomultiplier tube (PMT) are employed for transmitter and receiver devices, respectively. Furthermore, we design protocols for beacon transmission, beacon reception, time compensation, and time slot transition for hardware realization in a field-programmable gate array (FPGA) board based on a master-slave structure, where the master node periodically transmits beacon signals to the slave nodes. We perform field tests for real-time communication network with the transmission range over 110m × 90m, where the network communication system throughput reaches 800 kbps. Experimental results are provided to evaluate the time synchronization error and specify the system key parameters for real-time implementation.

关键词： Wireless communication Time division multiple access Scattering Throughput Main-secondary Real-time systems Communication networks

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3D bioprinting of in vitro porous hepatoma models:establishment,evaluation,and anticancer drug testing

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Bio-Design and Manufacturing 2024年第2期7卷 137-152页

作者： Xiaoyuan Wang Zixian Liu Qianqian Duan Boye Zhang Yanyan Cao Zhizhong Shen Meng Li Yanfeng Xi Jianming Wang Shengbo Sang Shanxi Key Laboratory of Micro Nano Sensors and Artificial Intelligence Perception College of Electronic Information and Optical EngineeringTaiyuan University of TechnologyTaiyuan 030024China Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education Taiyuan University of TechnologyTaiyuan 030024China Shanxi Institute of 6D Artificial Intelligence Biomedical Science Taiyuan 030031China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030024China Department of Pathology Shanxi Provincial Cancer HospitalTaiyuan 030024China General Hospital of Taiyuan Iron and Steel Company Taiyuan 030809China

Traditional tumor models do not tend to accurately simulate tumor growth in vitro or enable personalized treatment and are particularly unable to discover more beneficial targeted *** address this,this study describes the use of threedimensional(3D)bioprinting technology to construct a 3D model with human hepatocarcinoma SMMC-7721 cells(3DP-7721)by combining gelatin methacrylate(GelMA)and poly(ethylene oxide)(PEO)as two immiscible aqueous phases to form a bioink and innovatively applying fluorescent carbon quantum dots for long-term tracking of *** GelMA(10%,mass fraction)and PEO(1.6%,mass fraction)hydrogel with 3:1 volume ratio offered distinct pore-forming characteristics,satisfactorymechanical properties,and biocompatibility for the creation of the 3DP-7721 *** analysis and quantitative real-time fluorescence polymerase chain reaction(PCR)were used to evaluate the biological properties of the *** with the two-dimensional culture cell model(2D-7721)and the 3D mixed culture cell model(3DM-7721),3DP-7721 significantly improved the proliferation of cells and expression of tumor-related proteins and ***,we evaluated the differences between the three culture models and the effectiveness of antitumor drugs in the three models and discovered that the efficacy of antitumor drugs varied because of significant differences in resistance proteins and genes between the three *** addition,the comparison of tumor formation in the three models found that the cells cultured by the 3DP-7721 model had strong tumorigenicity in nude *** evaluation of the levels of biochemical indicators related to the formation of solid tumors showed that the 3DP-7721 model group exhibited pathological characteristics of malignant tumors,the generated solid tumors were similar to actual tumors,and the deterioration was *** research therefore acts as a foundation for the application of 3DP-7721 models in drug devel

关键词： 3D bioprinting Hepatoma tumor models Drug screening Antitumor drug development

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Research on Test Data Expansion Method Based on UAV Typical Index Evaluation

Research on Test Data Expansion Method Based on UAV Typical ...

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High Performance and Smart Computing (HPSC), IEEE International Conference on

作者： Huapin Geng Hongtao Ma Jiahui Tong Ning Wang Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory Beijing Electro-mechanical Engineering Institute Beijing China Beijing Xinghang Electro-mechanical Equipment Beijing China Beijing Electro-mechanical Engineering Institute Beijing China

ISBN: (数字)9798350389463

ISBN: (纸本)9798350389470

In order to scientifically and effectively evaluate the performance indexes of aircraft, the common Bayes multi-source data fusion method can comprehensively utilize a variety of information types under the condition that the decision risk is as small as possible, but there are risks such as insufficient data utilization and small sample data being “submerged” by large sample data in the fusion. This paper proposes a test data expansion method based on the combination of probability features and BP neural network model, and is verified by typical application to ensure that the sample size of multi-source data is comparable. Supplementary data not only retains the probability features of the original data, but also the sample generation has physical connotation.

关键词： Atmospheric modeling Computational modeling Neural networks Data integration Data models Performance analysis Bayes methods

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Analysis and research progress of infrared optical system with variable F-number

Analysis and research progress of infrared optical system wi...

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2019 International Conference on optical Instruments and technology: optical Systems and Modern Optoelectronic Instruments

作者： Cui, Ze-Yao Pan, Zhi-Feng Ren, Wei-Feng Jin, Chen-Jie Yu, Xin Science and Technology on Electro-optical Control Laboratory Luoyang471009 China Luoyang Institute of Electro-Optical Equipment AVIC Luoyang471009 China

ISBN: (纸本)9781510636460

Different from visible light, infrared optical systems need to consider various effects in order to change the F-number of the system, such as the effect of stray light in the system before and after variable F number, and the effect of cold reflection on the system, which are all effects to be considered. This paper analyzes the technology of infrared variable F number, summarizes the research progress, and the key technology of thermal aperture variable F-number. © 2020 SPIE.

关键词： Stray light

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Line-of-Sight of Reflectors Reconstruction and Stabilization Technique based on Fastest Differential Tracker 2

Line-of-Sight of Reflectors Reconstruction and Stabilization...

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2019 2nd International Symposium on Power electronics and control Engineering, ISPECE 2019

作者： Wang, Jian-Gang Gao, Jun-Ke Li, Li Han, Wen-Bin Peng-Jie, Shi Luoyang Institute of Electro-Optical Equipment Laboratory Luoyang471009 China Science and Technology on Electro-optical Control AVIC Luoyang471009 China

In order to overcome the shortcomings of half-angle reflectors mechanism stabilization configuration, we study the Line-of-Sight (LOS) of reflectors reconstruction and stabilization technique. A LOS reconstruction and stabilization configuration of reflectors is designed and modeled. Firstly, we design the Fastest Differential Tracker (FDT) to estimate relative angular rates, then propose a two-coordinate modeling method that is easy to analyse disturbance isolation performance, thirdly we study the control system isolation deegree to the measurement noise and carrier disturbance. The simulations indicate that FDT has superior performance in tracking speed, noise suppression and steady state vibration suppression, and that the stabilization accuracy, in consideration of both noise and carrier disturbance, is about 70μrad(1σ). The experimental results show that reflector platform stabilization accuracy based on LOS reconstruction configuration is about 80μrad(1σ). © Published under licence by IOP Publishing Ltd.

关键词： Stabilization

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Exploiting Inductive Bias in Transformer for Point Cloud Classification and Segmentation

Exploiting Inductive Bias in Transformer for Point Cloud Cla...

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IEEE International Conference on Multimedia and Expo Workshops (ICMEW)

作者： Zihao Li Pan Gao Hui Yuan Ran Wei Manoranjan Paul College of Computer Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing School of Control Science and Engineering Shandong University Jinan Science and Technology on Electro-optic Control Laboratory Luoyang Charles Sturt University Bathurst

Discovering inter-point connection for efficient high-dimensional feature extraction from point coordinate is a key challenge in processing point cloud. Most existing methods focus on designing efficient local feature extractors while ignoring global connection, or vice versa. In this paper, we design a new Inductive Bias-aided Transformer (IBT) method to learn 3D inter-point relations, which considers both local and global attentions. Specifically, considering local spatial coherence, local feature learning is performed through Relative Position Encoding and Attentive Feature Pooling. We incorporate the learned locality into the Transformer module. The local feature affects value component in Transformer to modulate the relationship between channels of each point, which can enhance self-attention mechanism with locality based channel interaction. We demonstrate its superiority experimentally on classification and segmentation tasks. The code is available at: https://***/jiamang/IBT

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An AuNPs/Mesoporous NiO/Nickel Foam Nanocomposite as a Miniaturized electrode for Heavy Metal Detection in Groundwater

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Engineering 2023年第8期27卷 199-208页

作者： Boyuan Xue Qian Yang Kaidong Xia Zhihong Li George Y.Chen Dayi Zhang Xiaohong Zhou State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China National Key Laboratory of Science and Technology on Micro/Nano Fabrication Institute of MicroelectronicsPeking UniversityBeijing 100871China Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things Guangdong and Hong Kong Joint Research Centre for Optical Fiber SensorsShenzhen UniversityShenzhen 518060China College of New Energy and Environment Jilin UniversityChangchun 130021China The Research Institute of Environmental Innovation(Suzhou) Tsinghua UniversitySuzhou 215000China

Heavy metals,notably Pb2+and Cu^(2+),are some of the most persistent contaminants found in *** monitoring of these metals,which relies on efficient,sensitive,cost-effective,and reliable methods,is a *** present a nanocomposite-based miniaturized electrode for the concurrent measurement of Pb2+and Cu^(2+)by exploiting the electroanalytical technique of square wave *** also propose a facile in situ hydrothermal calcination method to directly grow binder-free mesoporous Ni O on a three-dimensional nickel foam,which is then electrochemically seeded with gold nanoparticles(Au NPs).The meticulous design of a low-barrier Ohmic contact between mesoporous Ni O and Au NPs facilitates target-mediated nanochannel-confined electron transfer within mesoporous Ni *** a result,the heavy metals Pb2+(0.020 mg.L^(-1)detection limit;2.0–16.0 mg.L^(-1)detection range)and Cu^(2+)(0.013 mg.L^(-1)detection limit;0.4–12.8 mg.L^(-1)detection range)can be detected simultaneously with high ***,other heavy metal ions and common interfering ions found in groundwater showed negligible impacts on the electrode’s performance,and the recovery rate of groundwater samples varied between 96.3%±2.1%and 109.4%±0.6%.The compactness,flexible shape,low power consumption,and ability to remotely operate our electrode pave the way for onsite detection of heavy metals in groundwater,thereby demonstrating the potential to revolutionize the field of environmental monitoring.

关键词： AuNPs Mesoporous NiO Miniaturized electrode Heavy metal ions Groundwater Square wave voltammetry

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3D Curved Path Tracking control for UAV Collision Avoidance in Low Altitude Environments

3D Curved Path Tracking Control for UAV Collision Avoidance ...

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International Conference on Autonomous Unmanned Systems, ICAUS 2021

作者： Zhang, Menghua Wang, Honglun Wu, Jianfa Xu, Pengya School of Automation Science and Electrical Engineering Beihang University Beijing100191 China Science and Technology on Aircraft Control Laboratory Beihang University Beijing100191 China Beijing Institute of Control Engineering Beijing100190 China Shanghai Electro-Mechanical Institute Shanghai201109 China

ISBN: (纸本)9789811694912

Aiming at the 3D curved path tracking problem for fixed-wing unmanned vehicle (UAV) collision avoidance in low altitude environments, a path tracking control method is proposed based on the strategy of separated guidance-control design. First, considering the characteristics of six degree of freedom (6-DOF) motion equation of UAV including strong nonlinearity, tight coupling and nonaffinity, the affine transformation is performed on the UAV model for control design. Second, the path tracking control system is divided into the inner control loop and the outer guidance loop. Based on back-stepping linear active disturbance rejection control (BLADRC), the control loop is further divided into the angular rate loop, the angle loop and the ground speed loop, thus, corresponding controllers are designed respectively. For the design of guidance loop, acceleration commands of the UAV in vertical plane and horizontal plane are obtained by the L1 guidance algorithm, and corresponding angle commands are given by command transformation. Finally, the simulation results show that the UAV can track the desired path determined by the collision avoidance decision method accurately, thus the feasibility and the effectiveness of the proposed path tracking control method is verified. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Unmanned aerial vehicles (UAV)

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