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Synergetic PM_(2.5) and O_(3) control strategy for the Yangtze River Delta,China

Journal of Environmental Sciences 2023年第1期123卷 281-291页

作者： Zhaoxin Dong Jia Xing Fenfen Zhang Shuxiao Wang Dian Ding Hongli Wang Cheng Huang Haotian Zheng Yueqi Jiang Jiming Hao State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China State Environmental Protection Key Laboratory of the Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental SciencesShanghai 200233China

PM_(2.5)concentrations have dramatically reduced in key regions of China during the period 2013-2017,while O_(3)has *** there is an urgent demand to develop a synergetic regional PM_(2.5)and O_(3)control *** study develops an emission-to-concentration response surface model and proposes a synergetic pathway for PM_(2.5)and O_(3)control in the Yangtze River Delta(YRD)based on the framework of the Air Benefit and Cost and Attainment Assessment System(ABaCAS).Results suggest that the regional emissions of NOx,SO_(2),NH3,VOCs(volatile organic compounds)and primary PM_(2.5)should be reduced by 18%,23%,14%,17%and 33%compared with 2017 to achieve 25%and 5% decreases of PM_(2.5)and O_(3)in 2025,and that the emission reduction ratios will need to be 50%,26%,28%,28% and 55%to attain the National Ambient Air Quality *** effectively reduce the O_(3) pollution in the central and eastern YRD,VOCs controls need to be strengthened to reduce O_(3)by 5%,and then NOx reduction should be accelerated for air quality ***,control of primary PM_(2.5)emissions shall be prioritized to address the severe PM_(2.5)pollution in the northern *** most cities in the YRD,the VOCs emission reduction ratio should be higher than that for NOx in Spring and *** control should be increased in summer rather than winter when a strong VOC-limited regime ***,regarding the emission control of industrial processes,on-road vehicle and residential sources shall be prioritized and the joint control area should be enlarged to include Shandong,Jiangxi and Hubei Province for effective O_(3)control.

关键词： PM_(2.5) O_(3) Response surface model Synergistic control pathway Cost-benefit analysis

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Study on the control Mechanism of DBD-PA on Near Wall Flow 5

Study on the Control Mechanism of DBD-PA on Near Wall Flow

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2023 5th International Conference on Modeling, simulation, Optimization and Algorithm, ICMSOA 2023

作者： Zhang, Yanghui Qian, Qiaochu Hu, Xingjun Systerm Overall Technical Department China North Vehicle Research Institute Beijing China State Key Laboratory of Automobile Simulation and Control Jilin University Jilin Changchun China

Based on the Shyy plasma simulation model, this paper studied the control mechanism of positive and reverse DBD-PA (dielectric barrier discharge plasma actuator) on near wall flow, and discussed the influence of incoming boundary layer thickness and parallel double DBD-PA on control effect. The results showed that: the positive DBD-PA had an obvious acceleration effect on the near wall flow field, and the acceleration effect first increased and then decreased;the reverse DBD-PA had an obvious deceleration effect on the near wall flow field, and the deceleration effect decreased gradually;increasing the thickness of the incoming boundary layer can improve the control effect, but the improvement effect is gradually reduced;when parallel double DBD-PA, the control effect of positive and reverse DBD-PA is improved by 88.7 % and 62.5 % respectively. © Published under licence by IOP Publishing Ltd.

关键词： Flow fields

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Vehicle Platoon Motion Planning Based on Dual-Mode Strategy 1

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2023中国汽车工程学会年会暨展览会

作者： Lv Ying Sun Liangliang Li Haomiao Hu Hongyu He Lei Intelligent and Connected Vehicle Development Institute China FAW Corporation Limited State Key Laboratory of Comprehensive Technology on Automobile Vibration and Noise & Safety Control State Key Laboratory of Automotive Simulation and Control Jilin University

ISBN: (数字)9789819702527

ISBN: (纸本)9789819702510;9789819702541

Intelligent connected vehicle platooning technology utilizes vehicle-to-vehicle communication to enhance urban road efficiency and ensure driving *** paper focuses on the vehicle platoon motion planning algorithm,which constructs a reference path for platoon vehicles based on smoothed historical trajectory points of the lead *** algorithm generates path boundaries considering road and obstacle information,creates candidate paths using lateral and longitudinal sampling,and selects the optimal path using a cost function.A velocity planning algorithm is developed for platoon vehicles,incorporating dual-mode strategies for platoon cruise and obstacle avoidance based on different scenarios.A safety risk assessment is established,guiding the choice of speed planning ***-world experiments validate the planning outcomes,evaluating speed,acceleration,and inter-vehicle *** indicate well-smoothed trajectories with good comfort and safety attributes.

关键词： Intelligent connected vehicle Path planning Speed planning Vehicle platoon

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Alteration of the health effects of bioaerosols by chemical modification in the atmosphere:A review

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Fundamental Research 2024年第3期4卷 463-470页

作者： Ailin Li Xinghua Qiu Xing Jiang Xiaodi Shi Jinming Liu Zhen Cheng Qianqian Chai Tong Zhu State Key Joint Laboratory for Environmental Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China

Bioaerosols are a subset of important airborne particulates that present a substantial human health hazard due to their allergenicity and *** reactions in atmospheric processes can significantly influence the health hazard presented by bioaerosols;however,few studies have summarized such alterations to bioaerosols and the mechanisms *** this paper,we systematically review the chemical modifications of bioaerosols and the impact on their health effects,mainly focusing on the exacerbation of allergic diseases such as asthma,rhinitis,and ***,nitration,and oligomerization induced by hydroxyl radicals,ozone,and nitrogen dioxide are the major chemical modifications affecting bioaerosols,all of which can aggravate allergenicity mainly through immunoglobulin E *** processes can even interact with climate change including the greenhouse effect,suggesting the importance of bioaerosols in the future implementation of carbon neutralization *** summary,the chemical modification of bioaerosols and the subsequent impact on health hazards indicate that the combined management of both chemical and biological components is required to mitigate the health hazards of particulate air pollution.

关键词： Bioaerosols Allergenicity Chemical modification Airpollution Climate change

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Impacts of o-cresol spill on composition and function of river sediment and soil microbial communities

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Environmental Science and Pollution Research 2024年第22期31卷 31978-31988页

作者： Chen, Xiuli Yang, Yuyin Wang, Ji Pan, Chaoyi Zhang, Zhengke Chen, Sili Xie, Shuguang State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and Engineering Peking University Beijing100871 China Guangzhou510655 China

o-Cresol is a toxic substance with strong irritating and corrosive effects on skin and mucous membranes. To date, information on the effects of o-cresol on microbial communities in the natural environment is very limited. In the present study, 16S rRNA sequencing and metagenomic technique were carried out to elucidate the effects of the o-cresol spill on microbial communities in river sediments and nearby soils. o-Cresol spill induced the increase in the relative abundance of phyla Planctomycetes and Gemmatimonadetes, suggesting their resilience to o-cresol-induced stress. Uncultured Gemmatimonadetes genera and the MND1 genus exhibited enrichment, while the Pseudomonas genus dominated across all samples, indicating their potential pivotal roles in adapting to the o-cresol spill. Moreover, o-cresol spill impaired the metabolic functions of microbes but triggered their defense mechanisms. Under o-cresol pressure, microbial functions related to carbon fixation were upregulated and functions associated with sulfur metabolism were downregulated. In addition, the o-cresol spill led to an increase in functional genes related to the conversion of o-cresol to 3-methylcatechol. Several genes involved in the degradation of aromatic compounds were also identified, potentially contributing to the biodegradation of o-cresol. This study provides fresh insights into the repercussions of an abrupt o-cresol spill on microbial communities in natural environments, shedding light on their adaptability, defense mechanisms, and biodegradation potential. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Sediments

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Temporal variations, sources, and regional transport of carbonaceous species in PM2.5 in a northern China city: the role of domestic heating

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Carbon Research 2023年第1期2卷 1-13页

作者： Sun, Yuewei Xin, Ke Ai, Jing Huang, Huiying Zhang, Lingyun Qin, Weihua Yu, Qing Chen, Jing State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Beijing Normal University Beijing100875 China

Domestic heating is an important source of carbonaceous aerosols in northern China in winter. The seasonal variations, sources, and regional transport of carbonaceous species in PM2.5 in Yuncheng in the winter and summer of 2020–2021 were investigated in this study, with a particular focus on the role of domestic heating. Meanwhile, the pollution characteristics of carbonaceous aerosols in Beijing in winter were also investigated for comparison. The mass concentrations of organic carbon (OC) and elemental carbon (EC) and their contributions to PM2.5 were significantly enhanced during the heating period compared to other sampling periods in Yuncheng, however, no obvious differences were observed before and during the heating periods in Beijing. Source apportionment results showed that the heating related emission (50.9%) was the dominant source of total carbon in Yuncheng in the heating period, while vehicular emission (49.6%) was dominant in summer. Combing the positive matrix factorization (PMF) and potential source contribution function (PSCF) analysis, it was concluded that both local and regional heating activities contributed highly to carbonaceous aerosols in Yuncheng. It would be therefore of great environmental benefits to promote the clean residential heating transition in Yuncheng and other similar cities. Graphical Abstract: [Figure not available: see fulltext.] © 2023, The Author(s).

关键词： Carbonaceous aerosol Fenwei plain Heating policy Regional transport Source apportionment

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An enhanced eco-driving strategy based on reinforcement learning for connected electric vehicles:cooperative velocity and lane-changing control

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Journal of Intelligent and Connected Vehicles 2022年第3期5卷 316-332页

作者： Haitao Ding Wei Li Nan Xu Jianwei Zhang State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchunChina

Purpose–This study aims to propose an enhanced eco-driving strategy based on reinforcement learning(RL)to alleviate the mileage anxiety of electric vehicles(EVs)in the connected ***/methodology/approach–In this paper,an enhanced eco-driving control strategy based on an advanced RL algorithm in hybrid action space(EEDC-HRL)is proposed for connected *** EEDC-HRL simultaneously controls longitudinal velocity and lateral lane-changing maneuvers to achieve more potential ***,this study redesigns an all-purpose and efficient-training reward function with the aim to achieve energy-saving on the premise of ensuring other driving ***–To illustrate the performance for the EEDC-HRL,the controlled EV was trained and tested in various traffic flow *** experimental results demonstrate that the proposed technique can effectively improve energy efficiency,without sacrificing travel efficiency,comfort,safety and lane-changing performance in different traffic flow ***/value–In light of the aforementioned discussion,the contributions of this paper are *** enhanced eco-driving strategy based an advanced RL algorithm in hybrid action space(EEDC-HRL)is proposed to jointly optimize longitudinal velocity and lateral lane-changing for connected EVs.A full-scale reward function consisting of multiple sub-rewards with a safety control constraint is redesigned to achieve eco-driving while ensuring other driving performance.

关键词： Ecological driving Electric vehicles Reinforcement learning in hybrid action space Velocity and lane-changing control Reward function

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A global perspective on microbial risk factors in effluents of wastewater treatment plants

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Journal of Environmental Sciences 2024年第4期138卷 227-235页

作者： Kejing Chen Jinsong Liang Yuhan Wang Yechen Tao Yun Lu Aijie Wang School of Civil and Environmental Engineering Harbin Institute of TechnologyShenzhen 518055China Shenzhen Guohuan Environmental Protection Technology Development Co. LTD.Shenzhen 518055China State Key Joint Laboratory of Environmental Simulation and Pollution Control State Environmental Protection Key Laboratory of Microorganism Application and Risk ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China

Effective monitoring and management of microbial risk factors in wastewater treatment plants(WWTPs)effluents require a comprehensive investigation of these risks.A global survey on microbial risk factors in WWTP effluents could reveal important insights into their risk *** study aims to explore the abundance and types of antibiotic resistance genes(ARGs),virulence factor genes(VFGs),the vector of ARG/VFG,and dominant pathogens in global WWTP *** collected 113 metagenomes of WWTP effluents from the Sequence Read Archive of the National Center for Biotechnology Information and characterized the microbial risk *** results showed that multidrug resistance was the dominant ARG type,while offensive virulence factors were the most abundant type of *** most dominant types of ARGs in the vector of plasmid and phage were both aminoglycoside resistance,which is concerning as aminoglycosides are often a last resort for treating multi-resistant *** baumannii was the most dominant pathogen,rather than Escherichia coli,and a weak negative correlation between Escherichia coli and two other dominant pathogens(Acinetobacter baumannii and Bacteroides uniformis)suggests that using Escherichia coli as a biological indicator for all pathogens in WWTP effluents may not be *** Getah virus was the most dominant virus found in global WWTP *** study presents a comprehensive global-scale investigation of microbial risk factors in WWTP effluents,providing valuable insights into the potential risks associated with WWTP effluents and contributing to the monitoring and control of these risks.

关键词： Wastewater treatment plant Microbial risk factor Effluent Pathogen Antibiotic resistance gene Virulence factor gene

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Dynamic Coordination control Strategy of Dual-Planetary Power-Split Hydraulic Hybrid Vehicle

Dynamic Coordination Control Strategy of Dual-Planetary Powe...

引用

China SAE Congress, 2021

作者： Zeng, Xiaohua Song, Meijie Zhao, Ziliang Hu, Xingjun Sun, Kehua State Key Laboratory of Automobile Simulation and Control Jilin University Changchun China College of Transportation Shandong University of Science and Technology Qingdao China

ISBN: (纸本)9789811938412

The ride comfort of driving has higher requirements for the double planetary row hybrid hydraulic hybrid system applied in the bus. However, compared with the electric hybrid system, the vibration problem of the hydraulic hybrid system is particularly prominent due to the different dynamic characteristics of the engine and the hydraulic pump/motor, as well as the structural characteristics of the multi clutch/brake system. In the process of driving mode switching and rear planetary transmission, the timing of state transition of power and executive part has a great influence on the output of the system torque, which leads to the impact of the whole vehicle. Firstly, considering the real-time response state of the power source and the driving demand torque analyzed by the driving operation, the "dynamic transition torque coordination control" function module is added to revise the demand torque for the second time, to solve the total output torque fluctuation caused by the change of control logic and torque distribution mode before and after the driving mode switching, so as to realize the system coordination control during the mode switching. Then, through the dynamic analysis of the rear planetary system, the approximate linear relationship between the system output torque and clutch/brake friction torque, pump/motor output torque is obtained, and the torque control law of pump/motor is obtained. At the same time, the coordination control logic between the power and the actuator in each stage is determined. Finally, the joint simulation results of Simulink and AMESim show that the ride comfort of the vehicle is greatly improved during the impact prone multi-mode switching and the upshift/downshift of the rear planetary row. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Hybrid systems

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Torque allocation of four-wheel drive EVs considering tire slip energy

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Science China(Information Sciences) 2022年第2期65卷 61-74页

作者： Bingzhao GAO Yongjun YAN Hong CHU Hong CHEN Nan XU State Key Laboratory of Automotive Simulation and Control Jilin University Clear Energy Automotive Engineering Center Tongji University

With the increasing peak torque of the in-wheel motor, the tire slip energy dissipation becomes as considerable as the motor energy loss. The actuation redundancy in four-wheel drive electric vehicles has the innate advantage of reducing the energy dissipation of the tire slip according to different criteria. This study innovatively optimizes the energy loss of the motor and the slip energy consumption of the tire under a unified framework. A more accurate calculation model of the tire slip force and slip energy is adopted in the cost function. Its feasibility and potential are shown through simulation case studies based on different road adhesion coefficients among three allocation methods: considering both motor energy loss and tire slip loss, only considering the motor energy loss, and only considering the axis load distribution. The simulation results demonstrate that the torque allocation method considering both motor energy loss and tire slip loss can dramatically reduce the tire slip energy and tire wear with an acceptable motor energy efficiency sacrifice compared to the present allocation algorithms.

关键词： control allocation four-wheel drive electric vehicles tire slip energy model multi-objective optimization

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