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Moving policy and regulation forward for single-use plastic alternatives

Frontiers of Environmental Science & Engineering 2021年第3期15卷 191-194页

作者： Wenbing Tan Dongyu Cui Beidou Xi State Key Laboratory of Environmental Criteria and Risk Assessment and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater PollutionChinese Research Academy of Environmental SciencesBeijing 100012China School of Environment Tsinghua UniversityBeijing 100084China

Single-use plastics are often used once or cannot be reused for extended *** are widely consumed with the rapid development of social *** waste generated by single-use plastics threatens ecosystem health by entering the environment and ultimately restricts sustainable human *** innovation of sustainable and environmentally friendly single-use plastic alternative materials and the joint participation of governments,enterprises and the public are promising technologies and management approaches that can solve the problem of single-use plastics *** development of single-use plastic alternative products can be promoted fundamentally only by improving relevant legislation and standards,providing differentiated industrial policies,encouraging scientific and technological innovation and expanding public participation.

关键词： Single-use plastic alternatives Policy Regulation Sustainable development

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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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Design of Ultra-Stable Solid Amine Adsorbents and Mechanisms of Hydroxyl Group-Dependent Deactivation for Reversible CO2 Capture from Flue Gas

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Nano-Micro Letters 2025年第7期 363-381页

作者： Meng Zhao Liang Huang Yanshan Gao Ziling Wang Shuyu Liang Xuancan Zhu Qiang Wang Hong He Dermot O'Hare College of Environmental Science and Engineering Beijing Forestry University State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry University Research Center of Solar Power and Refrigeration Institute of Refrigeration and CryogenicsShanghai Jiao Tong University State Key Joint Laboratory of Environment Simulation and Pollution Control Research Centre for Eco-Environmental SciencesChinese Academy of Sciences Chemistry Research Laboratory Department of ChemistryUniversity of Oxford

Although supported solid amine adsorbents have attracted great attention for CO2capture,critical chemical deactivation problems including oxidative degradation and urea formation have severely restricted their practical applications for flue gas *** this work,we reveal that the nature of surface hydroxyl groups （metal hydroxyl Al–OH and nonmetal hydroxyl Si–OH） plays a key role in the deactivation *** polyethyleneimine （PEI） supported on Al–OH-containing substrates suffers from severe oxidative degradation during the CO2capture step due to the breakage of amine-support hydrogen bonding networks,but exhibits an excellent anti-urea formation feature by preventing dehydration of carbamate products under a pure CO2regeneration *** contrast,PEI supported on Si–OH-containing substrates exhibits excellent anti-oxidative stability under simulated flue gas conditions by forming a robust hydrogen bonding protective network with Si–OH,but suffers from obvi- ous urea formation during the pure CO2regeneration *** also reveal that the urea formation problem for PEI-SBA-15 can be avoided by the incorporation of an OH-containing PEG *** on the intrinsic understanding of degradation mechanisms,we successfully synthesized an adsorbent 40PEI-20PEG-SBA-15 that demonstrates outstanding stability and retention of a high CO2capacity of 2.45 mmol g-1over 1000 adsorption–desorption cycles,together with negligible capacity loss during aging in simulated flue gas （10%CO2+5%O2+3%H2O） for one month at60–70℃.We believe this work makes great contribution to the advancement in the field of ultra-stable solid amine-based CO2capture materials.

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Demand Response Strategy for HVAC Based on Reinforcement Learning and Imitation Learning

Demand Response Strategy for HVAC Based on Reinforcement Lea...

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2022 Tsinghua-IET Electrical Engineering Academic Forum, TDF 2022

作者： He, Yiliu Zhong, Haiwang Zhang, Guanglun Ruan, Guangchun Department of Electrical Engineering Tsinghua University Beijing China State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment Beijing China

ISBN: (数字)9781839537998

ISBN: (纸本)9781839537998

Heating, ventilation and air conditioning (HVAC) loads have great potential for demand response due to the buildings' thermal inertia. Modelling the complex thermal dynamics of realistic buildings is essential for the building energy optimization. In this paper, Deep Q-Network (DQN), a reinforcement learning (RL) algorithm, is used to decide the indoor temperature setpoint in response to the real-time price. The agent can adjust the HVAC load to reduce the electricity cost while considering the occupants' comfort requirement. To significantly accelerate the training process, imitation learning is adopted to pre-train the RL agent using historical data. The results of the case study show that the agent's performance improves steadily and exceeds the benchmark after a short period of training. © 2022 IET Conference Proceedings. All rights reserved.

关键词： Reinforcement learning

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The effect of hydrogen reduction of α-MnO_(2) on formaldehyde oxidation: The roles of oxygen vacancies

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Chinese Chemical Letters 2023年第3期34卷 171-174页

作者： Liping Zhou Chunying Wang Yaobin Li Xiaofeng Liu Hua Deng Wenpo Shan Hong He College of Resources and Environmental Sciences Fujian Agriculture and Forestry UniversityFuzhou 350002China Center for Excellence in Regional Atmospheric Environment Key Laboratory of Urban Pollutant ConversionInstitute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo Urban Environment Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesNingbo 315800China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

A series of α-MnO_(2) catalysts with various Mn valence states were treated by hydrogen reduction for different periods of time. Their catalytic capacity for formaldehyde(HCHO) oxidation was evaluated. The results indicated that hydrogen reduction dramatically improves the catalytic performance of α-MnO_(2) in HCHO oxidation. The α-MnO_(2) sample reduced by hydrogen for 2 h possessed superior activity and could completely oxidize 150 ppm HCHO to CO_(2) and H_(2)O at 70℃. Multiple characterization results illustrated that hydrogen reduction contributed to the production of more oxygen vacancies. The oxygen vacancies on the catalyst surface enhanced the adsorption, activation and mobility of O_(2) molecules, and thereby enhanced HCHO catalytic oxidation. This study provides novel insight into the design of outstanding MnO_x catalysts for HCHO oxidation at low temperature.

关键词： Hydrogen reduction α-MnO_(2) Formaldehyde oxidation Oxygen vacancies

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A Resilient control Strategy in Connected Vehicles under Actuator Attacks 7

A Resilient Control Strategy in Connected Vehicles under Act...

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7th CAA International Conference on Vehicular control and Intelligence, CVCI 2023

作者： Li, Kai Wang, Yulei Chen, Hong Gao, Jinwu State Key Laboratory of Automotive Simulation and Control The Department of Control Science Jilin University Changchun China School of Electronics and Information Engineering Tongji University Shanghai China The Department of Control Science Jilin University School of Electronics and Information Engineering Tongji University Shanghai China

ISBN: (纸本)9798350340488

With the promotion of advanced communication technology, autonomous vehicle platoons (AVPs) develop rapidly due to their advantages in enhancing traffic efficiency, road safety and reducing fuel consumption. However, as cyber physical systems, AVPs are very vulnerable to malicious attacks. In this paper, we propose a novel resilient control scheme to detect and tolerate a malicious directional actuator attack in a distributed manner which destroys the feedback control system by reversing the direction of actuator. The scheme consists of a distributed trigger mechanism with a logic-based switching criterion to detect the directional actuator attacks, and a resilient and distributed triple-step control scheme to defend against the attacks. The proposed control scheme is applied on bidirectional (BD) topology. Both global asymptotic stability and string stability of the platoon system are strictly proved via Lyapunov's stability theory. Finally, simulation results are provided to show the effectiveness of the proposed approach. © 2023 IEEE.

关键词： Autonomous vehicle platoons Directional Actuator attacks Distributed control String stability

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Research on An Acceleration Methon of Hydraulic Bushing Bench Test

Research on An Acceleration Methon of Hydraulic Bushing Benc...

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2022中国汽车工程学会年会暨展览会

作者： Zhao Xingming Yu Jinglong Han Chao Peng Liang Ding Shuwei Du Zheng China FAW Group Co. Ltd.Product Development CenterState Key Laboratory of Technology on Automobile NVH & Safety Control

ISBN: (纸本)9789819913640

Because of its remarkable characteristics of vibration reduction and noise reduction,the hydraulic bushing has been more and more used in all kinds of medium and high-end vehicles to improve the ride comfort of the whole *** this paper,a bench load spectrum acceleration method based on pseudo damage retention is *** vehicle road spectrum test data and the vehicle dynamics model are used for vehicle iteration,so as to obtain the time-domain load spectrum data at the hydraulic bushing,which is used for the bench rapid verification test of the hydraulic bushing.

关键词： hydraulic bushing load spectrum pseudo damage

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Intelligent vehicle path tracking based on feedback linearization and LQR under extreme conditions 41

Intelligent vehicle path tracking based on feedback lineariz...

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第41届中国控制会议

作者： Yi Sun Qikun Dai Jun Liu Xu Zhao Hongyan Guo College of Communication Engineering Jilin University The State Key Laboratory of Automotive Simulation and Control Jilin University The Department of Aviation Electrical Engineering Jilin Institute of Chemical Technology

ISBN: (数字)9789887581536

ISBN: (纸本)9781665482561

It proposes a path following control strategy for intelligent vehicles under extreme conditions based on feedback linearization and linear quadratic regulator(LQR).Firstly,the vehicle dynamics model and the vehicle kinematics model are established,and the affine nonlinear vehicle system model under the extreme condition is established by these two ***,the complex nonlinear vehicle system model is linearized using the feedback linearization method to obtain a simpler linear system ***,according to the obtained linear vehicle system model,the LQR method is used to design the tracking controller to obtain the optimal control input,so as to ensure the stability of the system and the optimality of the target,and realize the intelligent vehicle path *** affirm the effectiveness of the tracking method,a series of Carsim/Simulink co-simulation experiments are carried *** results show that the effects of path tracking combined with feedback linearization and LQR are significantly better than the other two methods,thus the path tracking method proposed in the paper is effectively verified.

关键词： Feedback Linearization LQR Affine Nonlinear Vehicle System Model Extreme conditions Path Tracking

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simulation and Optimization of Membrane Air Suspension Failure

Simulation and Optimization of Membrane Air Suspension Failu...

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2022中国汽车工程学会年会暨展览会

作者： Wu Xiaoyi Chang Haixiao Li Gang Shan Shuai Li Yao Zhu Biyuan China FAW Group Co. Ltd.Product Development Center State Key Laboratory of Technology on Automobile NVH & Safety Control

ISBN: (纸本)9789819913640

For the design requirements of air suspension,the failure mode analysis and optimization through suspension system level simulation is *** the air suspension equipped with membrane air spring as an example,a 3 D air spring FEM model is generated based on the simplified axisymmetric model,finally the air suspension system model is established,reproduce the failure phenomenon based on the suspension model,and thus provides a complete set of simulation analysis method with high *** this basis,the relationship between design parameters and structural stability is analyzed,and a structural stability verification method based on bench test is proposed.

关键词： air spring air suspension stability system level simulation

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Design of Vehicle Motion control Service System Based on Dynamic state Estimation

Design of Vehicle Motion Control Service System Based on Dyn...

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2022中国汽车工程学会年会暨展览会

作者： Tang Minghong Hu Hongyu Bao Mingxi Zhang Jian Gao Zhenhai State Key Laboratory of Automotive Simulation and Control Jilin University Faw Group Intelligent Network Development Institute Intelligent Driving Research Institute

ISBN: (纸本)9789819913640

In the automatic driving system,the motion control system is an important part,which directly determines whether the vehicle can accurately follow the *** conventional working conditions,the existing motion control algorithms can complete the task well,but when the vehicle is driving in complex working conditions,the control accuracy will *** is because the vehicle and road parameters vary greatly in these scenarios,and treating them as constants will cause the calculated values to deviate too much from the demand *** by introducing real-time dynamic characteristics of the vehicle can precise control of the vehicle be carried *** this paper,we propose a vehicle motion control service(VMCS) system based on dynamic states estimation,which takes the MPC algorithm as the core,and uses the real-time estimated vehicle and road state and parameters as the input for the lateral and longitudinal motion control of the vehicle,and carries out simulation experiments and real vehicle *** results show that the proposed VMCS system based on dynamic state estimation can achieve good control accuracy under extreme conditions.

关键词： dynamic parameter estimation Extreme driving conditions vehicle motion control service

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