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Tri-functional lanthanum-based biochar for efficient phosphorus recovery,bacterial inhibition,and soil fertility enhancement

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Biochar 2023年第1期5卷 302-318页

作者： Xiuxiu Jia Xue Zhao Yingtang Zhou Fan Li Wen Liu Yimin Huang Hucai Zhang Jinxing Ma Guangzhi Hu Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650504China College of Chemistry and Engineering Yunnan Normal UniversityKunming 650092China National Engineering Research Center for Marine Aquaculture Marine Science and Technology CollegeZhejiang Ocean UniversityZhoushan 316004China Key Laboratory of Water and Sediment Sciences Ministry of EducationCollege of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education School of EcologyEnvironment and ResourcesGuangdong University of TechnologyGuangzhou 510006China

Excess phosphorus(P)in water can lead to eutrophication and upset ecological *** this study,biochar with ultrathin two-dimensional nanosheets from the natural mesocarp of shaddock was chosen as the *** highly dispersed and small particle size of La(OH)_(3) on the surface of the nanosheets(MSBL3)was successfully achieved using chemical impregnation for the adsorption of P in aqueous solution,and the maximum adsorption capacity was 260.0 mg P g^(−1)[La].The differences in surface crystallization of La(OH)_(3) on biochar at different La loadings were analyzed using the high-precision characterization *** six adsorption-desorption cycles,MSBL3 retained 76.7%of its initial performance in terms of the P adsorption *** preparation of 1 g of MSBL3 costs about RMB 1,and it could reduce the P concentration in 2.6 ton of Laoyu River water to below the eutrophication threshold;and the inhibitory effect of MSBL3 on the eutrophication of water bodies was confirmed by the growth state of water ***,0.1 M MSBL3 could inhibit Escherichia coli and Staphylococcus aureus up to 98.7%and 85.0%,respectively,which indicates that MSBL3 can be used to recover P from water and also to improve water *** addition,the growth of the maize seedlings verified that the P-absorbed MSBL3 waste is a good soil fertilizer and can solve the problem of post-treatment of the *** conclusion,MSBL3 prepared in this study is a promising P sorbent for application.

关键词： Two-dimensional ordered biochar Lanthanum hydroxide phosphorus adsorbent Adsorption sludge re-planning Antibacterial

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Extended NNs-Based Adaptive Event-Triggered Asymptotic control for Nonlinear Systems Against Actuator Faults 7

Extended NNs-Based Adaptive Event-Triggered Asymptotic Contr...

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7th International Symposium on Autonomous Systems, ISAS 2024

作者： Liu, Shanlin Zhang, Yingwei Zhao, Xudong Wang, Hesheng Northeastern University College of Information Science and Engineering Shenyang China Northeastern University State Laboratory of Synthesis Automation of Process Industry Shenyang China Dalian University of Technology Faculty of Electronic Information and Electrical Engineering Dalian China Department of Automation Key Laboratory of System Control and Information Processing of Ministry of Education Key Laboratory of Marine Intelligent Equipment and System of Ministry of Education Shanghai Engineering Research Center of Intelligent Control and Management Shanghai Jiao Tong University Shanghai China

ISBN: (纸本)9798350363173

In this article, an adaptive event-triggered asymp¬totically fault-tolerant control (FTC) issue for nonlinear systems with actuator faults is investigated. An extended neural networks (NNs) technique is introduced to estimate unknown functions of the system under consideration. Compared with traditional NNs that ignore approximation errors, the proposed extended NNs further processes approximation errors, reducing the conservatism of the proposed algorithm. Then, within the framework of backstepping method, a new adaptive control strategy is developed by combining event-triggered mechanism (ETM) and bound estimation (BE) approach, which ensures the asymptotic convergence of system states while also reducing the transmission of unnecessary information, thus improving the utilization of communication resources. At the same time, the designed controller eliminates the adverse effects of actuator failures and system nonlinear terms. Finally, a simulation example of a single-link robot system is provided to demonstrate that the developed control strategy can ensure that all signals are bounded and system states are asymptotically convergent. © 2024 IEEE.

关键词： Approximation algorithms

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A robust tracking algorithm for surface targets

A robust tracking algorithm for surface targets

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2024 International Conference on Image, Signal Processing, and Pattern Recognition, ISPP 2024

作者： Yu, Tianzhi Guo, Yunhua Kuang, Qiankun Mou, Junmin Key Laboratory of Marine Power Engineering and Technology of Ministry of Communications Wuhan University of Technology Wuhan430063 China School of Naval Architecture Ocean and Energy Power Engineering Wuhan University of Technology Wuhan430063 China MicroPowers Ltd. Shanghai201203 China School of Navigation Wuhan University of Technology Wuhan430063 China

ISBN: (纸本)9781510680425

This paper focuses on the issue of reduced estimation accuracy in target tracking systems due to the presence of varying levels of glint noise in radar ***, the performance degradation of the widely used the Huber Converted Measurement Kalman Filter (HCMKF) algorithm is addressed as the pollution rate of glint noise in measurements *** this paper, the Robust Converted Measurement Kalman Filter (RCMKF) algorithm based on approximate least absolute deviation is proposed to address this *** results indicate that under measurements with lower pollution rate of glint noise, this method performs slightly better than HCMKF, and under measurements with higher pollution rate of glint noise, it outperforms HCMKF ***, the proposed algorithm has a lower computational cost compared to HCMKF. © 2024 SPIE.

关键词： Target tracking

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Emerging MOF-based antibiotic detection methods in water environments: Recent advances, challenges, and prospects

Water Cycle

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Water Cycle 2025年 6卷 335-346页

作者： Zhao, Kexin Li, Xinfei Sun, Cuizhu Chen, Lingyun Li, Fengmin Institute of Coastal Environmental Pollution Control Key Laboratory of Marine Environment and Ecology Ministry of Education College of Environmental Science and Engineering Ocean University of China Qingdao266100 China Marine Ecology and Environmental Science Laboratory Qingdao National Laboratory for Marine Science and Technology Qingdao266071 China Faculty of Agricultural Life and Environmental Science University of Alberta EdmontonABT6G 2P5 Canada Sanya Oceanographic Institution Ocean University of China Sanya572000 China

The misuse and improper disposal of antibiotics lead to the emergence and dissemination of antibiotic-resistant bacteria and antibiotic resistance genes, posing serious threats to water environmental safety and human health. Thus, developing efficient detection methods for residual antibiotics in water environments is crucial for pollution control and public health safety. Traditional methods for detecting antibiotics including chromatographic methods, microbiological methods, and immunoassays, suffering from issues such as complex procedures, the requirement for skilled operators, and high costs, greatly limiting their applicability in in-situ monitoring. Recently, rapid detection methods, including colorimetric, fluorescence, biosensors, and paper-based detection, have received widespread attention, overcoming the aforementioned limitations and being widely adopted. Metal-organic frameworks (MOFs) possess distinct advantages, such as enrichment adsorption, catalytic degradation, and self-generated fluorescence, making them highly promising in the field of rapid antibiotic detection. Herein, the detection principles and recent advances in rapid antibiotic detection methods based on MOFs are summarized, and the unique strengths and potential of MOFs in the field of rapid antibiotic detection are highlighted. Notably, recent progress and challenges in high-throughput computing (HTC) and machine learning (ML) for screening MOFs for specific applications is discussed, and strategies for their use in MOF-based rapid antibiotic detection methods are proposed. This comprehensive review may further guide the development and optimization of antibiotic detection methods utilizing MOFs and promote their practical applications for sensing environmental antibiotics. © 2025 The Authors

关键词： Water pollution control

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Enhanced Biodegradation of High-Salinity and Low- Temperature Crude-Oil Wastewater by Immobilized Crude-Oil Biodegrading Microbiota

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Journal of Ocean University of China 2022年第1期21卷 141-151页

作者： HUANG Xiao ZHOU Ting CHEN Xi BAI Jie ZHAO Yangguo Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlSchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China The Key Laboratory of Marine Environmental Science and Ecology Ministry of EducationOcean University of ChinaQingdao 266100China Harbin Institute of Technology(Shenzhen) Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution ControlShenzhen 518055China

High salt and low temperature are the bottlenecks for the remove of oil contaminants by enriched crude-oil degrading microbiota in Liaohe Estuarine Wetland(LEW),*** improve the performance of crude-oil removal,microbiota was further immobilized by two methods,i.e.,sodium alginate(SA),and polyvinyl alcohol and sodium alginate(PVA+SA).Results showed that the crude oil was effectively removed by the enrichment with an average degrading ratio of 19.42-31.45 mg(L d)^(−1).The optimal inoculum size for the n-alkanes removal was 10%and 99.89%.Some members of genera Acinetobacter,Actinophytocola,Aquabac-terium,Dysgonomonas,Frigidibacter,Sphingobium,Serpens,and Pseudomonas dominated in crude-oil degrading *** the removal efficiency was lower than free bacteria when the temperature was 15℃,SA and PVA+SA immobilization im-proved the resistance to *** composite crude-oil degrading microbiota in this study demonstrated a perspective potential for crude oil removal from surface water under high salinity and low temperature conditions.

关键词： crude-oil degrading microbiota microbial community immobilization high salinity low temperature

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Global optimization of double protograph LDPC codes for JSCC scheme

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Science China(Information Sciences) 2024年第6期67卷 455-456页

作者： Qiwang CHEN Chen CHEN Yu-Cheng HE Zhiping XU Xiamen Key Laboratory of Mobile Multimedia Communications College of Information Science and EngineeringHuaqiao University Key Laboratory of Underwater Acoustic Communication and Marine Information Technology (Xiamen University) Ministry of Education School of Ocean Information Engineering Jimei University

A double low-density parity-check (D-LDPC) coding system was proposed in[1]as a typical joint source-channel coding(JSCC) scheme[1–5].In this system,two LDPC coding matrices perform source and channel coding,*** important concept in a D-LDPC coding system is the introduction of a linking matrix between the check nodes (CNs)of the source coding matrix and the variable nodes (VNs) of the channel LDPC coding matrix.

关键词： optimization global scheme ldpc double jscc codes protograph

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Interaction and combined toxicity of microplastics and per-and polyfluoroalkyl substances in aquatic environment

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Frontiers of Environmental Science & engineering 2022年第10期16卷 145-161页

作者： Yanhui Dai Jian Zhao Chunxiao Sun Diying Li Xia Liu Zhenyu Wang Tongtao Yue Baoshan Xing Institute of Coastal Environmental Pollution Control Key Laboratory of Marine Environment and Ecology(Ministry of Education)Frontiers Science Center for Deep Ocean Multispheres and Earth SystemOcean University of ChinaQingdao 266100China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Institute of Environmental Processes and Pollution Control and School of Environmental and Civil EngineeringJiangnan UniversityWuxi 214122China Stockbridge School of Agriculture University of MassachusettsAmherstMA 01003USA

Microplastics(MPs)are recognized as vectors for the transport of organic contaminants in aquatic environments in addition to their own adverse effects on aquatic ***-and polyfluoroalkyl substances(PFASs)are widely present in aquatic environments due to their widespread applications,and thus coexist with ***,we focus on the interaction of MPs and PFASs and related combined toxicity in aquatic environments in this work The adsorption of PFASs on MPs is critically reviewed,and new mechanisms such as halogen bonding,π-πinteraction,cation-πinteractions,and micelle formation are ***,the effect of MPs on the transport and transformation of PFASs in aquatic environments is *** on four typical aquatic organisms(shellfish,Daphnia,algae,and fish),the toxicity of MPs and/or PFASs at the organismal or molecular levels is also evaluated and ***,challenges and research perspectives are proposed,and the roles of the shapes and aging process of MPs on PFAS biogeochemical processes and toxicity,especially on PFAS substitutes,are recommended for further *** review provides a better understanding of the interactions and toxic effects of coexisting MPs and PFASs in aquatic environments.

关键词： Microplastics Per-and Polyfluoroalkyl substances Adsorption Transport Transformation

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Durability of Concrete with Different Improvement Measures and Its Ser-vice Life Prediction in Island and Reef Environment

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China Ocean engineering 2022年第6期36卷 947-958页

作者： GONG Wei YU Hong-fa MA Hai-yan WANG Nan ZHU Hai-wei School of Civil Engineering and Architecture Jiangsu University of Science and TechnologyZhenjiang 212100China Department of Civil and Airport Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China School of Civil Engineering University of Science and Technology LiaoningAnshan 114051China Key Laboratory of Harbor and Marine Structure Durability Technology of the Ministry of Communications CCCC Forth Harbor Engineering Institute Co.Ltd.Guangzhou 510230China

To solve the durability of island and reef concrete engineering in the harsh environment of high temperature,high salt,high humidity and windy,the strength grade of concrete and the type of corrosion inhibitor were used as the influence factors,while the relative dynamic elastic modulus was used as the evaluation *** addition,the law and time variability of the deterioration of concrete,the size effect,environmental similarity and the service life model were *** results showed that improving the strength grade of concrete could improve the durability of concrete,and corrosion inhibitor could slightly improve the durability of ***-varying law of the deterioration of concrete conformed to the univariate quadratic *** with the concrete damage equivalent theory,a size effect model based on the relative dynamic elastic modulus was proposed and verified,and the size effect coefficient was also *** environmental similarity model between simulated and practical island and reef environment was *** with the reliability theory and the first order second moment method,a new service life model of concrete structure was *** authors were convinced that the research will be advantageous to researchers.

关键词： island and reef environment relative dynamic elastic modulus size effect environmental similarity service life model

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Towards Efficient Path Finding and Moving Stability-Focused Trajectory Planning for Mobile Robots

Towards Efficient Path Finding and Moving Stability-Focused ...

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2024 IEEE International Conference on Robotics and Biomimetics, ROBIO 2024

作者： Hou, Muyang Lei, Zhenya Hu, Haidong Wang, Zhong Wang, Yong Xie, Le Wang, Hesheng Shanghai Jiao Tong University Department of Automation Shanghai200240 China School of Information and Control Engineering China University of Mining and Technology Xuzhou221116 China Beijing Institute of Control Engineering Beijing100190 China Institute of Medical Robotics Shanghai Jiao Tong University Shanghai200240 China Shanghai Engineering Research Center of Intelligent Control and Management Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing of Ministry of Education Key Laboratory of Marine Intelligent Equipment and System of Ministry of Education Department of Automation Shanghai200240 China

ISBN: (纸本)9781665481090

Nowadays, mobile robots play an important role in a variety of service scenarios. They need to plan and track trajectories to accomplish tasks such as delivery or guided tours. In such tasks, there are two remaining challenges: on one hand, the time and memory consumption of present path planners are still significant;on the other hand, service robots, which have a higher center of gravity, demand greater moving stability than that of current trajectory planners provide. To address these two challenges. Firstly, we propose a safety boundary first A∗ which fully utilizes environmental obstacle information to create a safety boundary and searches in it to quickly find an initial path. Secondly, we formulate the trajectory optimization problem as a nonlinear optimization problem, where the smoothness, safety, feasibility, and moving stability of the robot are taken into account. Furthermore, to constrain the robot's lateral acceleration, we design a time allocation algorithm based on non-uniform B-spline, enhancing the quality of the resulting trajectory. Simulations and real-world experiments demonstrate that our algorithms significantly improve path search efficiency, enhance moving stability, reduce the difficulty of tracking, and improve the quality of task completion. © 2024 IEEE.

关键词： Trajectories

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Sensorless PMSM control Algorithm for Rim-Driven Thruster Based on Second-order Sliding Mode Observer 7

Sensorless PMSM Control Algorithm for Rim-Driven Thruster Ba...

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7th IEEE International Conference on Transportation Information and Safety, ICTIS 2023

作者： Yang, Zhi Yan, Xinping Ouyang, Wu Bai, Hongfen Ning, Changxiong Wuhan University of Technology School of Transportation and Logistics Engineering Wuhan China Wuhan University of Technology State Key Laboratory of Maritime Technology and Safety Wuhan China Wuhan University of Technology National Engineering Research Center for Water Transport Safety Wuhan China National Engineering Research Center for Water Transport Safety Wuhan China Ministry of Communications Shanghai Maritime University Key Laboratory of Marine Technology and Control Engineering Shanghai China Wuhan University of Technology School of Naval Architecture Ocean and Energy Power Engineering Wuhan China

ISBN: (纸本)9798350308532

In order to solve the problem of poor speed and position observation performance of the Permanent Magnet Synchronous Motor (PMSM) of rim-driven thruster (RDT), a second-order sliding mode observer based on super-twisting algorithm (STA) is presented. The new algorithm to external interference of and effectively weakens the 'chattering' phenomenon. The new algorithm can effectively suppress the sliding mode chattering and retains the advantages of traditional sliding mode observer algorithm such as strong robustness and insensitivity. The simulation results show that the speed and position error and chattering of the proposed second-order sliding mode observer are reduced compared with traditional SMO. © 2023 IEEE.

关键词： Permanent magnets

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