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Changes in the microbial community structure and diversity during the electricity generation process of a microbial fuel cell with algal-film cathode

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Clean Energy 2024年第5期8卷 177-185页

作者： Haiping Wang Liguo Zheng changyin tan Ling Li Feng Liu Hui Feng Changsha Environmental Protection Vocational College Changsha 410004HunanChina School of Geographic Sciences Hunan Normal UniversityChangsha 410081HunanChina Key Laboratory of Agro-Ecological Processes in Subtropical Regions Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125HunanChina

A two-chamber microbial fuel cell(MFC)with algal-film cathode was *** showed good electric-generating performance with three electric-generating stages:start-up,development,and *** average output voltage reached~0.412 V during the stable period.A maximum power density during continuous operation was 19.76 mW/m^(2).Bacterial samples were collected from the anode in the three stages(A1,A2,and A3),and their community structure and diversity were analyzed using Illumina MiSeq high-throughput sequencing technology.A total of 4238 operational taxonomic units were identified based on the number of *** the phylum level,Proteobacteria and Bacteroidetes played a dominant role in the three stages and increased significantly during electricity *** with A1,the relative abundances of Proteobacteria in A2 and A3 increased by 23.30%and 32.06%,respectively,whereas those of Bacteroidetes in A2 and A3 increased by 5.56%and 14.50%,*** the genus level,there were differences in the composition of bacterial communities among the three *** and Chlorobium became the dominant genera in A2,replacing Nitrospira and norank_f__Saprospiraceae in A1,and Sphingobacterium and Ochrobactrum became the dominant genera in *** to the sample cluster and principal component analyses,A1 was clustered into one class,and A2 and A3 were clustered into a second *** work revealed bacterial community succession at the anode of an algal-film cathode MFC during the electricity generation process,which provides a theoretical basis for the subsequent promotion of electricity generation by algal-film cathode MFCs.

关键词： microbial fuel cell electricity generation high-throughput sequencing bacterial community

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Legacy of herbicides in water from Hailun City,Northeast China:Occurrence,source,and ecological risk assessment

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Journal of Environmental Sciences 2024年第11期145卷 50-63页

作者： Jun Ma Wenjie Ren Hongzhe Wang Jiayin Song Junfeng Jia Hong Chen changyin tan Ying Teng School of Geographic Sciences Hunan Normal UniversityChangsha 410081China Key Laboratory of Soil Environment and Pollution Remediation Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China College of Materials and Chemistry Tongren UniversityTongren 554300China

Herbicides(HBCs)are extensively used in modern ***,their potential negative impacts on environmental media have emerged as a significant environmental *** this study,we employed positivematrix factorization(PMF)to identify the potential sources of ***,we utilized amulti-matrix ecological riskmodel to assess the risks associated with HBCs in both surface water and groundwater in the black soil region of Northeast *** findings revealed that the levels of15HBCs in surface water and groundwater ranged from585.84 to 6466.96 ng/L and 4.80 to 11,774.64 ng/L,*** PMF results indicated that surface runoff and erosion accounted for 50%of the total HBCs in water,serving as the primary *** tested HBCs exhibited acute risk values within acceptable *** risk index for the∑15HBCs was categorized as“moderate risk”in 31%of the surface waters and 13%of the ***,4%of the groundwater sampling sites reached the“high risk”*** chronic risk quotient of∑15HBCs in surface water and groundwater was 92%and 62%at the“high risk”level,***,noncarcinogenic HBCs contributed more significantly to the ecotoxicology of the aquatic system than carcinogenic *** study provides comprehensive information on the legacy of HBCs in water bodies and emphasizes the potential risks posed by HBCs to aquatic *** results obtained from this study could help relevant management authorities in developing and implementing effective regulations tomitigate the ecological and environmental risks associated with HBCs.

关键词： Herbicide Surface and groundwater Source apportionment Ecological risk assessment

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土壤和烟叶中多环芳烃的暴露特征及健康风险评估

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南京林业大学学报（自然科学版） 2024年第4期48卷 200-208页

作者：马军谭长银王勇吴兰艳秦航道铜仁学院材料与化学工程学院贵州铜仁554300 湖南师范大学地理科学学院湖南长沙410081

【目的】揭示土壤和烟叶中多环芳烃(polycyclic aromatic hydrocarbons,PAHs)的暴露特征及其对人体造成的健康风险。【方法】采集了贵州松桃县长坪(CP)、太平(TP)、平头(PT)、普觉(PJ)、盘信(PX)和孟溪(MX)6个烟区土壤和新鲜烟叶样品各4... 详细信息

【目的】揭示土壤和烟叶中多环芳烃(polycyclic aromatic hydrocarbons,PAHs)的暴露特征及其对人体造成的健康风险。【方法】采集了贵州松桃县长坪(CP)、太平(TP)、平头(PT)、普觉(PJ)、盘信(PX)和孟溪(MX)6个烟区土壤和新鲜烟叶样品各40个,测定样品中16种PAHs含量,分析其经口(ingestion)、皮肤(dermal)和呼吸(inhalation)3种非饮食摄入途径的暴露特征,并评估了PAHs对烟农造成的致癌和非致癌健康风险。【结果】土壤和烟叶中7种致癌性的PAHs[䓛(Chr)、苯并(a)蒽(BaA)、苯并(b)荧蒽(BbF)、苯并(k)荧蒽(BkF)、二苯并(a,h)蒽(DahA)、苯并(a)芘(BaP)和茚并(1,2,3-cd)芘(IP)]的含量分别为70.97~365.71和293.53~1730.72μg/kg,平均含量分别为221.13和707.03μg/kg;土壤和烟叶中9种非致癌性PAHs[萘(Nap)、蒽(Ant)、菲(Phe)、芘(Pyr)、苊烯(Ane)、二氢苊(Any)、芴(Flu)、荧蒽(Fla)和苯并(g,h,i)芘(BghiP)]的总含量分别为65.6~647.6和108.9~606.1μg/kg,平均值分别为379.6和304.2μg/kg。PAHs暴露特征从大到小呈现为:经口摄入>皮肤摄入>呼吸摄入,土壤和烟叶中7种致癌性的PAHs对烟农总的平均每日暴露量分别为54.41~280.38和225.04~1326.87 pg/(kg·d),平均值分别为169.53和542.05 pg/(kg·d);非致癌性的9种PAHs对烟农总的平均每日暴露量分别为146.70~1448.19和243.41~1355.33 pg/(kg·d),平均值分别为848.91和680.22 pg/(kg·d);致癌性和非致癌性PAHs的平均每日摄入量最大值均出现在MX烟区。土壤和烟叶中PAHs对烟农产生的非致癌性总危险指数为1.02×10-5~4.31×10^(-4),平均值为1.92×10^(-4);PAHs对烟农产生的总致癌风险指数为8.39×10^(-7)~5.14×10^(-6),平均值为2.18×10^(-6)。其中,BaP的总致癌风险指数最大(3.69×10^(-7)~4.25×10^(-6),平均值为1.58×10^(-6));有26个点位的BaP超过美国环保署建议的临界值,超标率为65%,有90%的取样点7种致癌性PAHs的总量处于低风险水平。【结论】土壤和烟叶中PAHs对烟农的暴露方式主要为经口和皮肤途径,PAHs的非致癌风险值处于美国环保署建议的临界值之下,为可接受水平。绝大多数取样点的致癌性PAHs已经给烟农造成了低风险的健康影响,尤其是BaP应该受到重点关注。

关键词：多环芳烃土壤和烟叶烟农摄入途径健康风险评估

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有机物料对农田土壤肥力及镉有效性的影响

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土壤 2024年第2期56卷 367-374页

作者：曹雪莹谭长银杨佳赵信林张培育马军长沙学院乡村振兴研究院长沙410022 湖南师范大学地理科学学院长沙410081 中国农业科学院麻类研究所长沙410205

以我国南方两种不同程度Cd污染农田土壤为研究对象,通过不同有机物料(猪粪、商品有机肥、水稻秸秆及其生物质炭)施肥处理探究了土壤肥力水平及Cd有效性的变化,并对施用有机物料情况下土壤Cd有效性与土壤养分进行了关联分析。结果表明:... 详细信息

以我国南方两种不同程度Cd污染农田土壤为研究对象,通过不同有机物料(猪粪、商品有机肥、水稻秸秆及其生物质炭)施肥处理探究了土壤肥力水平及Cd有效性的变化,并对施用有机物料情况下土壤Cd有效性与土壤养分进行了关联分析。结果表明:施用有机物料显著提高了土壤氮磷钾含量及其有效性,商品有机肥提高了土壤全氮含量,施用猪粪处理土壤的全磷和有效磷含量显著升高,商品有机肥和生物质炭明显提高了土壤全钾和速效钾含量。水稻秸秆及其生物质炭处理的轻污染土壤有机质含量均达土壤肥力1级(>40 g/kg)。与不施肥相比,施加有机物料对轻污染土壤有效态Cd含量的影响不大,但中污染土壤有效态Cd含量显著下降,最高降幅达20.00%。土壤有效态Cd含量与全氮、全磷、全钾和有效磷含量均呈显著负相关关系。轻污染土壤上施加猪粪和生物质炭处理的上海青地上部Cd含量均低于0.20mg/kg。施加商品有机肥处理两种土壤肥力综合指数最高,是其他处理的1.50倍~3.18倍,但其上海青地上部Cd含量存在较高风险。因此,针对南方Cd污染农田土壤的培肥及安全利用可考虑施用猪粪有机肥。

关键词：土壤质量有机物料镉(Cd) 土壤肥力综合指数有效性

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一流学科建设和研究生教育的关系研究

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科教导刊 2024年第2期 1-4页

作者：李忠武谭长银孙艳艳刘窑军湖南师范大学地理科学学院湖南长沙410081

一流学科建设和研究生教育共同构成“双一流”建设的重要支撑。本课题基于“双一流”建设背景,探讨一流学科的深刻内涵和外延,阐明一流学科建设和研究生教育之间联动发展、相辅相成、互相成就的关系,并从师资力量、人才培养、科研成果... 详细信息

一流学科建设和研究生教育共同构成“双一流”建设的重要支撑。本课题基于“双一流”建设背景,探讨一流学科的深刻内涵和外延,阐明一流学科建设和研究生教育之间联动发展、相辅相成、互相成就的关系,并从师资力量、人才培养、科研成果等方面来深入探究一流学科与研究生教育之间的相互作用和相互促进。一流学科建设的核心任务和研究生教育高素质发展的基本目标密切符合,以此实现二者协同推进。

关键词：一流学科学科内涵研究生教育高质量发展相互关系

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Adaptive Sensor-Fault Tolerant Control of Unmanned Underwater Vehicles With Input Saturation

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IEEE/CAA Journal of Automatica Sinica 2024年第4期11卷 907-918页

作者： Xuerao Wang Qingling Wang Yanxu Su Yuncheng Ouyang changyin Sun the School of Artificial Intelligence the Engineering Research Center of Autonomous Unmanned System Technologyand the Anhui Provincial Engineering Research Center for Unmanned System and Intelligent TechnologyMinistry of EducationAnhui UniversityHefei 230601China the School of Automation Southeast UniversityNanjing 210096China

This paper investigates the tracking control problem for unmanned underwater vehicles(UUVs)systems with sensor faults,input saturation,and external disturbance caused by waves and ocean *** active sensor fault-tolerant control scheme is ***,the developed method only requires the inertia matrix of the UUV,without other dynamic information,and can handle both additive and multiplicative sensor ***,an adaptive fault-tolerant controller is designed to achieve asymptotic tracking control of the UUV by employing robust integral of the sign of error feedback *** is shown that the effect of sensor faults is online estimated and compensated by an adaptive *** the proposed controller,the tracking error and estimation error can asymptotically converge to ***,simulation results are performed to demonstrate the effectiveness of the proposed method.

关键词： Asymptotic stability fault-tolerant control input saturation robust integral of the sign of error unmanned underwater vehicle

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Physics-based battery SOC estimation methods:Recent advances and future perspectives

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Journal of Energy Chemistry 2024年第2期89卷 27-40,I0003页

作者： Longxing Wu Zhiqiang Lyu Zebo Huang Chao Zhang changyin Wei College of Mechanical Engineering Anhui Science and Technology UniversityChuzhou 233100AnhuiChina Hubei Key Laboratory of Power System Design and Test for Electrical Vehicle Hubei University of Arts and ScienceXiangyang 441053HubeiChina School of Internet Anhui UniversityHefei 230039AnhuiChina School of Mechanical and Electrical Engineering Guilin University of Electronic TechnologyGuilin 541004GuangxiChina

The reliable prediction of state of charge(SOC)is one of the vital functions of advanced battery management system(BMS),which has great significance towards safe operation of electric *** far,the empirical model-based and data-driven-based SOC estimation methods of lithium-ion batteries have been comprehensively discussed and reviewed in various ***,few reviews involving SOC estimation focused on electrochemical mechanism,which gives physical explanations to SOC and becomes most attractive candidate for advanced *** this reason,this paper comprehensively surveys on physics-based SOC algorithms applied in advanced ***,the research progresses of physical SOC estimation methods for lithium-ion batteries are thoroughly discussed and corresponding evaluation criteria are carefully ***,future perspectives of the current researches on physics-based battery SOC estimation are *** insights stated in this paper are expected to catalyze the development and application of the physics-based advanced BMS algorithms.

关键词： Lithium-ion batteries State of charge Electrochemical model Battery management system

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Discovering Latent Variables for the Tasks With Confounders in Multi-Agent Reinforcement Learning

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IEEE/CAA Journal of Automatica Sinica 2024年第7期11卷 1591-1604页

作者： Kun Jiang Wenzhang Liu Yuanda Wang Lu Dong changyin Sun the School of Automation Southeast UniversityNanjing 210096China the School of Artificial Intelligence Anhui UniversityHefei 230601China IEEE the School of Cyber Science and Engineering Southeast UniversityNanjing 211189China the Engineering Research Center of Autonomous Unmanned System Technology Ministry of EducationHefei 230601China

Efficient exploration in complex coordination tasks has been considered a challenging problem in multi-agent reinforcement learning(MARL). It is significantly more difficult for those tasks with latent variables that agents cannot directly observe. However, most of the existing latent variable discovery methods lack a clear representation of latent variables and an effective evaluation of the influence of latent variables on the agent. In this paper, we propose a new MARL algorithm based on the soft actor-critic method for complex continuous control tasks with confounders. It is called the multi-agent soft actor-critic with latent variable(MASAC-LV) algorithm, which uses variational inference theory to infer the compact latent variables representation space from a large amount of offline ***, we derive the counterfactual policy whose input has no latent variables and quantify the difference between the actual policy and the counterfactual policy via a distance function. This quantified difference is considered an intrinsic motivation that gives additional rewards based on how much the latent variable affects each agent. The proposed algorithm is evaluated on two collaboration tasks with confounders, and the experimental results demonstrate the effectiveness of MASAC-LV compared to other baseline algorithms.

关键词： Latent variable model maximum entropy multi-agent reinforcement learning(MARL) multi-agent system

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Regional Multi-Agent Cooperative Reinforcement Learning for City-Level Traffic Grid Signal Control

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IEEE/CAA Journal of Automatica Sinica 2024年第9期11卷 1987-1998页

作者： Yisha Li Ya Zhang Xinde Li changyin Sun School of Automation Southeast UniversityNanjing 210096 Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of EducationSoutheast UniversityNanjing 210096China

This article studies the effective traffic signal control problem of multiple intersections in a city-level traffic system.A novel regional multi-agent cooperative reinforcement learning algorithm called RegionSTLight is proposed to improve the traffic *** a regional multi-agent Q-learning framework is proposed,which can equivalently decompose the global Q value of the traffic system into the local values of several regions Based on the framework and the idea of human-machine cooperation,a dynamic zoning method is designed to divide the traffic network into several strong-coupled regions according to realtime traffic flow *** order to achieve better cooperation inside each region,a lightweight spatio-temporal fusion feature extraction network is *** experiments in synthetic real-world and city-level scenarios show that the proposed RegionS TLight converges more quickly,is more stable,and obtains better asymptotic performance compared to state-of-theart models.

关键词： Human-machine cooperation mixed domain attention mechanism multi-agent reinforcement learning spatio-temporal feature traffic signal control

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Fixed-Time Consensus-Based Nash Equilibrium Seeking

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 267-269页

作者： Mengwei Sun Jian Liu Lu Ren changyin Sun the Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China IEEE the School of Automation and the Key Laboratory of Measurement and Control of Complex System of Engineering Ministry of EducationSoutheast UniversityNanjing 210096China the School of Artificial Intelligence and the Engineering Research Center of Autonomous Unmanned System Technology Ministry of EducationAnhui UniversityHefei 230601China

Dear Editor,This letter examines the fixed-time stability of the Nash equilibrium(NE)in non-cooperative *** propose a consensus-based NE seeking algorithm for situations where players do not have perfect information and communicate via a topology *** proposed algorithm can achieve NE in a fixed time that does not depend on initial conditions and can be adjusted in advance.

关键词： Fixed seeking letter

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