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Frontispiece: Rapid N2O Formation from N2on Water Droplet Surfaces

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Angewandte Chemie International Edition 2025年第9期64卷

作者： Qi Jiang Dr. Deming Xia Xiaofan Li Prof. Dr. Hong Zhang Dr. Rujing Yin Dr. Huaijun Xie Prof. Dr. Hong-bin Xie Prof. Dr. Jie Jiang Prof. Dr. Jingwen Chen Prof. Dr. Joseph S. Francisco Key Laboratory of Industrial Ecology and Environmental Engineering (MOE) Dalian Key Laboratory on Chemicals Risk Control and Pollution Prevention Technology School of Environmental Science and Technology Dalian University of Technology Dalian 116024 China Department of Earth and Environmental Science University of Pennsylvania Philadelphia Pennsylvania 19104-6316 United States School of Marin Science and Technology Harbin Institute of Technology at Weihai Weihai Shandong 264209 China

Mechanistic Insights into the Sequestration of Antibiotics in Aquatic Sediments and the Microbial Phylogenetic Divergence between the Aqueous and Sediment Phases on the Fate of Antibiotic Resistance Genes

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SSRN 2023年

作者： Ohore, Okugbe Ebiotubo Zhang, Jingli Ifon, Binessi Edouard Kumwimba, Mathieu Nsenga Mu, Xiaoying Kuang, Dai Wang, Zhen Gu, Ji-Dong Yang, Guojing Key Laboratory of Tropical Diseases Control National Health Commission Key Laboratory of Tropical Translational Medicine of Ministry of Education School of Tropical Medicine Hainan Medical University Hainan Haikou571199 China Key Laboratory of Tropical Translational Medicine of Ministry of Education School of Tropical Medicine Hainan Medical University Hainan Haikou571199 China The First Affiliated Hospital of Hainan Medical University Hainan Haikou China Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention Guangdong Provincial Key Laboratory of Marine Biotechnology Shantou University Shantou515063 China Department of Clinical Medicine Shantou University Medical College Guangdong Shantou515041 China Department of Civil and Environmental Engineering Shantou University Shantou515063 China Laboratory of Physical Chemistry University of Abomey-Calavi Republic of Benin Cotonou01 BP 4521 Benin State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China Environmental Science and Engineering Program Guangdong Technion - Israel Institute of Technology 241 Daxue Road Jinping District Guangdong Shantou515063 China Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion Guangdong Technion Israel Institute of Technology 241 Daxue Road Jinping District Guangdong Shantou515063 China

Antibiotic pollution and the evolution of antibiotic resistance genes (ARGs) are critical issues of global significance. This study investigated the sequestration of antibiotics onto aquatic sediments and the microbial phylogenetic divergence between the aqueous and sedimentary phases on antibiotic resistome profiles. The total concentration of antibiotics in the surface water (49.5%) was significantly higher than suspended particulate matter (31.4%), and sedimental phases (19.1%). However, the relative abundance of ARGs in surface water and sediment was disproportionate to the abundance of antibiotics concentration, and sediments were the predominant ARGs reservoirs. Phylogenetic divergence of the microbial communities between the surface water and the sedimentary ecosystems resulted in a significant shift in the ARGs profiles between the two distinctive surface-water and sediments. Priority ARGs of Clinical importance;blaGES, MCR-7.1, ermB, tet(34), tet36, tetG-01, and sul2 were significantly increased in the surface water, while blaCTX-M-01, blaTEM, blaOXA10-01, blaVIM, tet(W/N/W), tetM02, and ermX were amplified in the sediments. cfxA was an endemic ARG in surface-water ecosystems while the endemic ARGs of the sedimentary ecosystems included aacC4, aadA9-02, blaCTX-M-04, blaIMP-01, blaIMP-02, bla-L1, penA, erm(36), ermC, ermT-01, msrA-01, pikR2, vgb-01, mexA, oprD, ttgB, and aac. These findings provide crucial information for the identification of ARGs-specific high-risk reservoirs © 2023, The Authors. All rights reserved.

关键词： Antibiotics

Microbial Phylogenetic Divergence between Surface-Water and Sedimentary Ecosystems Drove the Resistome Profiles

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SSRN 2023年

Antibiotic pollution and the evolution of antibiotic resistance genes (ARGs) are critical issues of global significance. This study investigated the fate of antibiotics in sedimentary and aqueous substrates and the impact of ecosystem shift between water and sedimentary phases on resistome profiles. The total concentration of antibiotics in the surface water (49.5%) was significantly higher than suspended particulate matter (31.4%), and sedimental phases (19.1%). However, the relative abundance of ARGs in surface water and sediment was disproportionate to the abundance of antibiotics concentration, and sediments were the predominant ARGs reservoirs. Phylogenetic divergence of the microbial communities between the surface water and the sedimentary ecosystems resulted in a significant shift in the ARGs profiles between the two distinctive surface-water and sediments. ARGs of Clinical importance;blaGES, MCR-7.1, ermB, tet(34), tet36, tetG-01, and sul2 were significantly increased in the surface water, while blaCTX-M-01, blaTEM, blaOXA10-01, blaVIM, tet(W/N/W), tetM02, and ermX were amplified in the sediments. cfxA was an endemic ARG in surface-water ecosystems while the endemic ARGs of the sedimentary ecosystems included aacC4, aadA9-02, blaCTX-M-04, blaIMP-01, blaIMP-02, bla-L1, penA, erm(36), ermC, ermT-01, msrA-01, pikR2, vgb-01, mexA, oprD, ttgB, and aac. These findings provide crucial information for the identification of ARGs-specific high-risk reservoirs © 2023, The Authors. All rights reserved.

关键词： Antibiotics

A constraint importance measure-based beluga whale optimization algorithm for reliability redundancy allocation problems considering mixed redundancy strategy

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Reliability engineering & System Safety 2025年

作者： Shuai Zhang Huiqi Du Zhiqiang Cai Shubin Si Jiangbin Zhao School of Mechanical Engineering Northwestern Polytechnical University Xi’an China 710072 Ministry of Industry and Information Technology Key Laboratory of Industrial Engineering and Intelligent Manufacturing Northwestern Polytechnical University Xi’an China 710072 School of Mechanical Engineering Xi’an University of Science and Technology Xi’an China 710054 Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Detection and Control Xi’an University of Science and Technology Xi’an China 710054

The reliability redundancy allocation problem (RRAP) aims to maximize system reliability by determining the optimal combination of component reliability and subsystem redundancy. RRAP plays an important role in the reliability improvement of complex systems, and it is necessary to determine the cost-effective RRAP solution effectively for complex systems. This paper constructs the constraint importance measure (CIM) to identify the key subsystems by considering the relationship between objective function and constraints. A CIM-based local search rule is designed to improve the system reliability by making the best use of limited resources. CIM-based beluga whale optimization (CIMBWO) is developed by combining the advantages of CIM and BWO. In numerical experiments, compared with GA, PSO, and BWO, the performance of CIMBWO is verified by two benchmarks and 11 different scale hybrid systems. The results show that CIMBWO can get better solutions with fast convergence and high robustness.

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Microplastics Decrease the Toxicity of Sulfamethoxazole to Marine Algae (Skeletonema Costatum) at the Cellular and Molecular Levels

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SSRN 2021年

作者： Li, Xue Luo, Jiwei Zeng, Hui Zhu, Lin Lu, Xueqiang Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution Tianjin International Joint Research Center for Environmental Biogeochemical Technology College of Environmental Science and Engineering Nankai University Tianjin300350 China Key Laboratory of Pollution Processes and Environmental Criteria of Ministry of Education Tianjin Key Laboratory of Environmental Remediation and Pollution Control College of Environmental Science and Engineering Nankai University Tianjin300350 China

Microplastics (MPs) and sulfamethoxazole (SMX) are ubiquitous in various aquatic environments, but little is known about their joint toxicity mechanism on marine organisms. This study investigated the individual and joint toxicity of SMX and five MPs, including polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), polystyrene (PS) and bioplastic polylactic acid (PLA), on Skeletonema costatum . The inhibition rates (IR) of the single MPs systems (50 mg/L) followed the order of PP > PE > PLA > PS > PET, while the addition of 0.3 mg/L SMX significantly decreased the toxicity of PP, PE and PLA in the joint system due to the "shelter" effect from MPs adsorption. As for the PS and SMX joint system, the malondialdehyde (MDA), reactive oxygen species (ROS) levels and superoxide dismutase (SOD) activity were higher than those of the other joint systems. The metabolomic results showed that SMX downregulated glycerophospholipid and amino acid metabolism. PS caused the downregulation of glycerophospholipids, carbohydrates and amino acid via the hetero-aggregation with algae. These findings enhance our understanding of the potential mechanisms of the MPs and organic pollutants joint toxicity in the marine environment. © 2021, The Authors. All rights reserved.

关键词： Microplastic

Optimal Operation of Integrated Energy System Based on Deep Reinforcement Learning

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Optimal Operation of Integrated Energy System Based on Deep ...

Chinese Automation Congress (CAC)

作者： Fangchi Zhang Fan Zhou Jun Zhao Wei Wang Key Laboratory of Intelligent Control and Optimization for Industrial Equipment Ministry of Education Dalian University of Technology School of Control Science and Engineering Dalian University of Technology Dalian China

ISBN: (数字)9781728176871

ISBN: (纸本)9781728176888

Integrated energy system (IES) combining multi energies such as power, heat, cooling and gas, can be applied to improve the overall energy efficiency based on the energy cascade utilization. In order to enhance the operation efficiency of IES, an operation optimization method is proposed in this paper based on deep deterministic policy gradient (DDPG). Two categories of models of linear ones and nonlinear ones are established, then a nonlinear optimization model is constructed by taking the annual operating cost as the objective. With regard to the instability in its training process of DDPG, two improved strategies of scaled initial state spaces and dynamic noise compensation are presented. In the case study, the proposed method is employed to obtain the optimal operation strategies for a typical scenario of a practical IES. The experimental results demonstrate that the proposed one not only obtains the most economical strategies, but also exhibits the robustness of the algorithm.

关键词： Optimization Intelligent control Linear programming Gaussian noise

Frontispiz: Rapid N2O Formation from N2on Water Droplet Surfaces

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Angewandte Chemie 2025年第9期137卷

Nano Biochar Triggers High Adsorption of Oxytetracycline in Aqueous Environment: Effects of Solution Conditions and Particle Aggregation

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SSRN 2022年

作者： Jia, Wenqiang Pan, Xiangrui Song, Jiaying Wang, Jian Sun, Weikai Xin, Yanjun Yan, Qinghua Zhou, Chengzhi Zheng, Hao Liu, Guocheng Qingdao Engineering Research Center for Rural Environment College of Resource and Environment Qingdao Agricultural University Qingdao266109 China State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin150090 China Institute of Coastal Environmental Pollution Control College of Environmental Science and Engineering Key Laboratory of Marine Environment and Ecology Ministry of Education Frontiers Science Center for Deep Ocean Multispheres and Earth System Ocean University of China Qingdao266100 China Sanya Oceanographic Institution Ocean University of China Sanya572000 China

Physical disintegration of macro biochars in natural environments produces nano biochars, thus affecting environmental processes (e.g., adsorption, migration) of antibiotic contaminants. However, understandings about the relationships between adsorption behaviors of antibiotics and unique physicochemical colloidal properties of nano biochar are relatively limited. In this study, a nano biochar (NSD700) was prepared from sawdust-derived biochar (SD700) by a combination method of ball milling, sonication, and centrifugation to contrastively investigate their adsorption for oxytetracycline (OTC). NSD700 had similar chemical structure properties of carbon fraction with SD700, whereas NSD700 possessed greater surface area and better porosity. The maximal sorption capacity of OTC on NSD700 was 30.7 mg/g, 1.95 times greater than that on SD700 (10.4 mg/g), primarily benefiting from more exposed surfaces and pores. OTC adsorption on NSD700 was inhibited under acidic and alkaline condition, and the inhibiting effect was more significant in comparison with that on SD700. OTC sorption onto NSD700 gradually decreased with increasing concentration of Na+, but which was not observed onto SD700. Aggregation kinetic of NSD700 varying with Na+ concentration demonstrated that the inhibiting effect might be affiliated with the destabilization and aggregation of NSD700, which could cause the shield of adsorption sites. This study provided insights for antibiotic adsorption characteristics on nano biochar and will help understanding the process and fate of antibiotics in the biochar-remediated environment. © 2022, The Authors. All rights reserved.

关键词： Porosity

Position Sensorless control of Permanent Magnet Synchronous Motor Based on Adaptive Filtering Sliding Mode Observer

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Position Sensorless Control of Permanent Magnet Synchronous ...

Chinese control and Decision Conference, CCDC

作者： Anna Wang Yingjie Xiong Tao Zhang College Of Information Science and Engineering Northeastern University Shenyang China School of Electrical Engineering Dalian University of Technology Dalian China Shenyang Institute of Automation Chinese Academy of Sciences Shenyang China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of Sciences Shenyang China Key Laboratory of Networked Control Systems Chinese Academy of Sciences Shenyang China

ISBN: (纸本)9781665478977

In the position sensorless control strategy of permanent magnet synchronous motor (PMSM), the back-EMF method based on sliding mode observer (SMO) is favored because of its robustness. In this paper, a SMO based on the piecewise sigmoid function is designed. Based on the back-EMF observation error, the gain adaptation of the SMO is realized, which effectively reduces the high-frequency chattering problem of the conventional SMO. The low-pass filter of the conventional SMO is improved, and an adaptive filter based on the back-EMF low-pass filter is proposed. According to the back-EMF observation error, the cut-off frequency of the low-pass filter is changed in real-time, and the estimation of rotor position is improved. After Matlab/Simulink simulation verification, the control strategy is feasible and achieves a better control effect.

关键词： Adaptation models Low-pass filters Adaptive filters Rotors Sensorless control Observers Permanent magnet motors