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Application of multi-angle spaceborne observations in characterizing the long-term particulate organic carbon pollution in China

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science of the Total Environment 2025年 958卷 177883页

作者： Hang, Yun Pu, Qiang Zhu, Qiao Meng, Xia Jin, Zhihao Liang, Fengchao Tian, Hezhong Li, Tiantian Wang, Tijian Cao, Junji Fu, Qingyan Dey, Sagnik Li, Shenshen Huang, Kan Kan, Haidong Shi, Xiaoming Liu, Yang Gangarosa Department of Environmental Health Rollins School of Public Health Emory University AtlantaGA30322 United States Department of Environmental and Occupational Health Sciences School of Public Health University of Texas Health Science Center at Houston HoustonTX77030 United States Department of Behavioral Science and Health Equity College for Public Health and Social Justice Saint Louis University St. LouisMO63104 United States School of Public Health Fudan University Shanghai200032 China School of Public Health and Emergency Management Southern University of Science and Technology Shenzhen518055 China State Key Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing100875 China China CDC Key Laboratory of Environment and Population Health National Institute of Environmental Health Chinese Center for Disease Control and Prevention Beijing100021 China School of Atmospheric Sciences Nanjing University Nanjing210023 China Institute of Atmospheric Physics Chinese Academy of Sciences Beijing100101 China State Ecologic Environmental Scientific Observation and Research Station at Dianshan Lake Shanghai Environmental Monitoring Center Shanghai200235 China Centre for Atmospheric Sciences Indian Institute of Technology Delhi Hauz Khas New Delhi110016 India State Key Laboratory of Remote Sensing Science Aerospace Information Research Institute Chinese Academy of Sciences Beijing100101 China Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention Department of Environmental Science and Engineering Fudan University Shanghai200433 China

Ambient PM2.5 pollution poses a major risk to public health in China, contributing to significant mortality and morbidity. While overall PM2.5 concentrations have declined in recent years, the changes in PM2.5 chemical constituents remain inadequately understood due to limited ground monitoring networks. We developed a Super Learner model that integrates MISR satellite data, chemistry transport model simulations, and land use information to predict daily OC concentrations across China from 2003 to 2019 at a 10-km spatial resolution. The model achieved high predictive accuracy with a cross-validation R2 of 0.84 and an RMSE of 4.9 μg/m3. Our findings show elevated OC levels in Northern China, driven by industrial activities with concentrations exceeding 30 μg/m3 during the heating season. In contrast, forest fires were the primary contributors in Yunnan, raising OC concentrations to 20–30 μg/m3 during fire seasons. Over the 17-year period, the national OC trend declined by 1.3 % annually. Regionally, the Beijing-Tianjin-Hebei region and the Fenwei Plain experienced faster reductions at annual rates of 1.5 % and 2.0 %, respectively, while Yunnan exhibited no significant trends. To better understand pollution source contributions, we analyzed the OC/EC ratio, which indicated higher ratios in less populated rural areas, suggesting agricultural and biogenic emissions, while lower ratios in urban clusters pointed to primary sources such as traffic and industrial activities. Notably, since 2013, significant decreases in the OC/EC ratio have been observed in the North China Plain, likely reflecting the impact of stringent air pollution control policies on biomass burning. This study provides valuable exposure estimates for epidemiological research on the long-term health effects of OC in China, offering insights for evaluating air quality policies and guiding future management strategies. © 2024

关键词： Air quality

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Fractional order PID control of microbial fuel cell based on Kalman filter

Fractional order PID control of microbial fuel cell based on...

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第32届中国过程控制会议(CPCC2021)

作者： Yingying Zhao Minmin Wang Aimin An Minan Tang Dongsong Luo Feihong He Yinying Fan College of Electrical and Information Engineering Lanzhou University of Technology Key Laboratory of Gansu Advanced Control for Industrial Processes Lanzhou University of Technology National Demonstration Center for Experimental Electrical and Control Engineering Education Lanzhou University of Technology College of Automation and Electrical Engineering Lanzhou Jiaotong University Gansu Province Special Equipment Inspection and Testing Institute College of Foreign Languages Lanzhou University of Technology

In the actual fractional order PID control system of microbial fuel cell(MFC),the existence of interference noise seriously affects the control quality of the *** at this problem,a fractional order PID control strategy based on Kalman filter is *** Kalman filter is used to realize the optimal estimation of the state of the MFC system,eliminate uncertain factors such as interference noise,and provide more accurate state information for the fractional order PID controller,thereby improving the performance of the *** simulation results show that,compared with the conventional fractional order PID control,the fractional order PID control based on Kalman filter can effectively compensate the influence of interference on the MFC system,the steady-state accuracy is improved obviously,and the entire control process is smoother,at the same time,the anti-interference ability of the system is improved significantly,which effectively improves the ability of the MFC power generation system to operate stably in a complex environment.

关键词： Microbial fuel cell Fractional order PID control Kalman filter Anti-interference ability

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controlled generation of ortho-quinone methides and (4+3) cyclization with 2-indolylalcohols by dual photoredox/Brønsted acid relay catalysis

Green Synthesis and Catalysis

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Green Synthesis and Catalysis 2024年

作者： Liang, Dong Gao, Panpan Zhang, Zhihan Xiao, Wenjing Chen, Jiarong Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction College of Chemistry Central China Normal University 152 Luoyu Road Hubei Wuhan 430079 China Wuhan Institute of Photochemistry and Technology 7 North Bingang Road Hubei Wuhan 430083 China State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 China

Given the significance of oxacyclic frameworks in molecular scaffolds and drug discovery, it is intriguing to precisely construct and manipulate such ring systems in chemical research. In this area, the intermolecular, multicomponent cyclization for the synthesis of diversely substituted seven-membered ring oxacycles under simple conditions is still a challenge. Here, we report a dual photoredox/Brønsted acid relay catalytic strategy for in situ generation of ortho-quinone methides and subsequent (4 + 3) cyclization with 2-indolylalcohols. In this one-pot multicomponent reaction, two C–C and one C–O bonds are formed, providing de novo access to various biologically important indole-fused, oxygen-containing seven-membered heterocycles. By virtue of a chiral phosphoric acid, an asymmetric version can also be achieved with good to excellent levels of enantioselectivity (up to 96:4 er). © 2024 Fudan University

关键词： (4+3) cyclization Brønsted acid Ortho-quinone methides Relay catalysis Visible light

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A Systematic Survey of control Techniques and Applications in Connected and Automated Vehicles

arXiv

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arXiv 2023年

作者： Liu, Wei Hua, Min Deng, Zhiyun Meng, Zonglin Huang, Yanjun Hu, Chuan Song, Shunhui Gao, Letian Liu, Changsheng Shuai, Bin Khajepour, Amir Xiong, Lu Xia, Xin School of Automotive Studies Tongji University Shanghai218074 China State Key Laboratory of Automotive Simulation and Control Jilin University Changchun130025 China School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan430074 China Department of Civil and Environmental Engineering University of California Los AngelesCA90095 United States School of Mechanical Engineering Shanghai Jiao Tong University Shanghai200240 China College of Computer Science and Technology Zhejiang University Hangzhou310027 China School of Vehicle and Mobility Tsinghua University Beijing100084 China Department of Mechanical and Mechatronics Engineering University of Waterloo WaterlooON Canada

Vehicle control is one of the most critical challenges in autonomous vehicles (AVs) and connected and automated vehicles (CAVs), and it is paramount in vehicle safety, passenger comfort, transportation efficiency, and energy saving. This survey attempts to provide a comprehensive and thorough overview of the current state of vehicle control technology, focusing on the evolution from vehicle state estimation and trajectory tracking control in AVs at the microscopic level to collaborative control in CAVs at the macroscopic level. First, this review starts with vehicle key state estimation, specifically vehicle sideslip angle, which is the most pivotal state for vehicle trajectory control, to discuss representative approaches. Then, we present symbolic vehicle trajectory tracking control approaches for AVs. On top of that, we further review the collaborative control frameworks for CAVs and corresponding applications. Finally, this survey concludes with a discussion of future research directions and the challenges. This survey aims to provide a contextualized and in-depth look at state of the art in vehicle control for AVs and CAVs, identifying critical areas of focus and pointing out the potential areas for further exploration. Copyright © 2023, The Authors. All rights reserved.

关键词： Autonomous vehicles

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Anaerobic Environment-Induced Efficient Degradation of Chloroquine Phosphate: Insights into the Role of Metal-Free C3n4 Nanotube in Visible-Light-Driven Peroxymonosulfate Activation

SSRN

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SSRN 2022年

作者： Zhang, Xiao Xu, Baokang Li, Xi Fan, Xiulei Zhang, Jiankun Yu, Yang Sun, Yongjun Key Laboratory of Industrial Pollution Control and Resource Reuse of Jiangsu Province College of Environmental Engineering Xuzhou University of Technology Xuzhou221018 China School of Environmental Sciences and Engineering Nanjing Tech University Nanjing211816 China College of Urban Construction Nanjing Tech University Nanjing211816 China Graduate School at Shenzhen Tsinghua University Shenzhen518055 China

Catalytic efficiency and stability are the main bottlenecks toward metal-free photocatalyst-mediated visible-light-driven peroxymonosulfate (PMS) activation processes (PMS-Vis). In this study, a nanotubular carbon nitride (C3N4 NT) photocatalyst was prepared and applied to the PMS-Vis system to facilitate chloroquine phosphate (CQP) degradation. The specific structure and excellent photoelectrochemical properties of C3N4 NT enhanced its ability as a photocatalyst to achieve PMS activation and CQP degradation under visible light irradiation. More importantly, the anaerobic environment enhanced the degradation performance of the developed system. The degradation kinetic constants for the C3N4 NT/PMS-Vis-N2 system reached 0.0898 min-1 at a 0.2 g/L catalyst dosage and 0.8 mM PMS concentration. Mechanism studies and theoretical calculations clarified that the anaerobic environment avoided the competitive adsorption and consumption behavior of dissolved O2 and PMS on the photocatalyst surface, thus maximizing the transfer of surface photogenerated charges to PMS for PMS activation and active species generation. The developed process demonstrated high catalyst utilization efficiency and degradation performance toward various contaminants. This study provides a reference for improving the environmental applicability of metal-free photocatalysts and developing water treatment technologies within anaerobic environments. © 2022, The Authors. All rights reserved.

关键词： Carbon nitride

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Regeneration of Deactivated Cuo@Sio2 Catalysts for Catalytic Oxidation of Ash3: A Synergy of Regeneration and Modification

SSRN

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SSRN 2022年

作者： Li, Kunlin Feng, Jiayu Zhang, Yaxi Wang, Chi Li, Kai Ning, Ping Zhang, Changbin State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environment Sciences Chinese Academy of Sciences Beijing100085 China Faculty of Chemical Engineering Kunming University of Science and Technology Kunming650500 China Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming650500 China University of Chinese Academy of Sciences Beijing100049 China

The recyclability of AsH3 removal catalysts is vital for industrial application and environmental protection. In this work, a series of regeneration studies based on the catalytic oxidation of AsH3 over CuO@SiO2 core-shell catalysts were carried out. Experimental results demonstrated that the nitrogen thermal regeneration (NR) and alkali rinse regeneration (AR) are promising methods for the regeneration of CuO@SiO2 catalysts. 100% regeneration efficiency could be realized by the NR method at 500°C. The characterization results showed that oxidation products (As2O3 and As2O5) could be completely removed from the deactivated catalysts at 500°C, and highly active unsaturated Cu2+ and chemisorbed oxygen were recovered to a great extent. Surprisingly, the AR method could not only effectively regenerate the deactivated catalysts, but also modify the catalysts to a certain extent, resulting an unparalleled regeneration efficiency of 231.3%. A synergy of regeneration and modification in the AR process was illustrated by further investigation, in which not only were the oxidation products thoroughly removed, but also the adsorption and activation sites (Si-OH) of AsH3 were increased, and the number and strength of alkaline sites were also improved. Meanwhile, this synergy enabled the regeneration efficiency still up to 172% after five cycles of regeneration. This work provides a novel idea for the cyclic utilization of AsH3 removal catalysts. © 2022, The Authors. All rights reserved.

关键词： Catalytic oxidation

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Exploring the Effect of Different Waste Polypropylene Matrix Composites on Service Performance of Modified Asphalt Using Analytic Hierarchy Process

SSRN

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SSRN 2023年

作者： Li, Fan Zhang, Xiao Zhang, Kaifeng Li, Feng Wang, Linbing Cao, Junsheng Shanxi Key Laboratory of Civil Engineering Disaster Prevention and Control College of Civil Engineering Taiyuan University of Technology Shanxi Taiyuan030024 China School of Transportation Science and Engineering Beihang University Beijing100191 China The Sensing and Perception Lab School of Environmental Civil Agricultural and Mechanical Engineering University of Georgia AthensGA30602 United States Shanxi Traffic Maintenance Group Co. Ltd Shanxi Taiyuan030006 China

Using end-of-life polypropylene (PP) as additive to modify base asphalt has received rapid-growing attention because of the significant benefits not only to alleviating environmental pressure of waste plastic but also to improving service performance of asphalt pavement. However, the low flexibility of waste PP results in undesired low-temperature property of corresponding modified asphalt so as to limit its application. Accordingly, several PP matrix composites have developed in recent years via adding elastomer or fiber, aiming to enhance the toughness and impact resistance at low temperature. Nevertheless, utilizing these waste PP matrix composites as modifiers of base asphalt unfortunately has not been well investigated yet. In this study, three different waste PP matrix copolymers were used to modify base asphalt, including laboratory-made PP, ethylene-propylene-rubber (EPR) and polyethylene (PE) copolymer, as well as commercial high-impact PP (HIPP) and fiber reinforced PP (FRPP). Moreover, their modifying effects were measured and compared with respect to creep recovery, force-ductility curve, fatigue resistance and storage stability. The fluorescence micrograph was also analyzed to reveal the modification mechanism. Analytic hierarchy process (AHP) was employed to determine the optimum waste PP matrix composite and concentration considering the overall service performance. Test results showed that the PP/EPR/PE modified asphalt exhibited superior overall properties in terms of lowest fatigue factor, excellent rutting resistance and satisfied toughness. By contrast, although the HIPP modified asphalt had highest creep recovery rate at high temperature, the ductility and toughness at low temperature were worst. For FRPP modified asphalt, the fibers could form crosslink structure within base asphalt that had positive effect on improving the low-temperature property, while the incompatibility between fiber and base asphalt led to poor storage stability and the o

关键词： Polypropylenes

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A Data Driven Condition Monitoring of Chain Type Structures by Using Nonlinear Frequency Analyses 2

A Data Driven Condition Monitoring of Chain Type Structures ...

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2nd International Conference on industrial Artificial Intelligence, IAI 2020

作者： Gao, Yi Luo, Zhong Zhu, Yunpeng Qiu, Yue Li, Yuqi Key Laboratory of Vibration and Control of Aero-Propulsion Systems Ministry of Education of China Northeastern University Shenyang110819 China State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology Dalian116024 China University of Sheffield Department of Automatic Control and System Engineering SheffieldS13JD United Kingdom

ISBN: (纸本)9781728182162

A novel data driven condition monitoring approach is proposed in this study to detect the location of nonlinear faults in chain type structures. In this approach, the chain type system is characterized by representing the relationships between any two adjacent measurement points by NARX (Nonlinear Auto-Regressive with Exogenous Inputs) model. A new indicator for condition monitoring, known as the NET (Nonlinear Energy Transmission) indicator, is introduced based on the evaluation of the NRSFs (Nonlinear Response Spectrum Functions) of the chain type system. A 3 DOF system is employed to demonstrate the application of the data driven condition monitoring by using the NET indicator. A case study on the condition monitoring of a rotor-bearing system is then discussed to validate the advantage of the proposed approach in engineering practice. © 2020 IEEE.

关键词： Condition monitoring

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Energy-carbon flow reallocation in microalgae under high CO 2 : Platform for carbon utilization and wastewater valorization in steel industry

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Bioresource technology 2025年 435卷

作者： Jiaying Ma Yuying Wang Tongcai Liu Xiaogang You Huaqiang Chu Xuefei Zhou Yalei Zhang State Key Laboratory of Water Pollution Control and Green Resource Recycling College of Environmental Science and Engineering Tongji University Shanghai 200092 China Shanghai Institute of Pollution Control and Ecological Security Tongji University Shanghai 200092 China

The steel industry faces dual challenges of extensive CO 2 emissions and intricate wastewater management. This study investigated a novel microalgal platform using Chlorella pyrenoidosa for simultaneous CO 2 utilization and valorization of cold-rolling emulsion wastewater. Optimal biomass production (1.80 ± 0.07 g/L) was achieved at 5 % CO 2 , whereas 20 % CO 2 caused severe inhibition of growth and carbon fixation. Mechanistic investigation revealed that 20 % CO 2 triggered systemic energy restriction, evidenced by depleted intracellular ATP and downregulated metabolic pathways (TCA cycle, oxidative phosphorylation). Furthermore, essential energy was diverted to counteract oxidative and acidification stress, upregulating multiple DNA repair pathways. Concurrently, 20 % CO 2 triggered metabolic overflow that actively rerouted 16.8 % of carbon towards extracellular organic matter. A regulatory nexus was established: energy restriction drove overall inhibition, while energy reallocation induced carbon flow alteration. These insights provide a theoretical basis for engineering microalgae with enhanced tolerance for industrial carbon utilization and bioresource recovery.

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Corrigendum to “Drivers of PM_(2.5)-O_(3) co-pollution: from the perspective of reactive nitrogen conversion pathways in atmospheric nitrogen cycling” [Sci. Bull. 67(18) (2022) 1833–1836]

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science Bulletin 2023年第3期68卷 351-351页

作者： Feng Wang Weichao Wang Zhenyu Wang Zhongcheng Zhang Yinchang Feng Armistead GRussell Guoliang Shi State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control Tianjin Key Laboratory of Urban Transport Emission ResearchCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China China Meteorological Administration-Nankai University(CMA-NKU)Cooperative Laboratory for Atmospheric Environment-Health Research College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Department of Electronics and Tianjin Key Laboratory of Photo-Electronic Thin Film Device and Technology Nankai UniversityTianjin 300071China School of Civil and Environmental Engineering Georgia Institute of TechnologyAtlantaGA 30332-0512USA

The authors would like to correct Fig.1e,*** to our neglect when doing the picture layout of Fig.1,the abscissa in Fig.1e,f is error:the abscissa ranges from80 to 0 in Fig.1e and ranges from90 to20 in *** image has been corrected:the abscissa ranges from80 to 80 in Fig.1e and ranges from80 to 80 in Fig.1f[1].We declare that this correction does not change the results or conclusions of this paper.

关键词： cycling pollution correction

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