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Modified red soil combined with aquatic plants to control sediment phosphorus release

Zhongguo Huanjing Kexue/China Environmental Science 2025年第5期45卷 2780-2791页

作者： Zou, Lin-Xi Li, Dan-Li Cheng, Kang-Long Zhang, Yu Zhang, Wen College of Ecology and Environment Chengdu University of Technology Chengdu610059 China Key Laboratory of Collaborative Control and Joint Remediation of Soil and Water Pollution in National Environmental Protection Chengdu610059 China State Key Laboratory of Geological Disaster Prevention and Geological Environment Protection Chengdu610059 China

This study utilized natural red clay (RC) and 700°C calcined red clay (CRC-700) to form treatment groups combined with submerged macrophytes Vallisneria spiralis (VS) and Ceratophyllum demersum (CD), aiming to develop a treatment technology effective in controlling sedimentary phosphorus (P) release. The results demonstrated that the VS+CRC-700 treatment group exhibited superior performance in reducing and removing sedimentary P compared to other treatments. Specifically, dissolved reactive phosphorus (SRP) in the overlying water of the VS+CRC-700 group was significantly reduced from 1.38 mg/L to 0.024 mg/L compared to the control group. Additionally, the concentrations of Fe(II)-P and iron-aluminum bound phosphorus (CDB-P) in different sediment layers were maximally decreased by 94 and 488.03 mg/kg, respectively. Meanwhile, the VS+CRC-700 treatment markedly enhanced P immobilization in sediments, with Ca-P content increasing by up to 182.78mg/kg across sediment layers. Furthermore, microbial community analysis revealed that VS+CRC-700 increased sediment microbial abundance by 5403 units, while reducing the relative abundances of Proteobacteria and Bacteroidetes by 16.56% and 33.33%, respectively. These findings collectively suggest that VS+CRC-700 represents a cost-effective and high-efficiency technology for improving water quality in P-polluted systems. Its application demonstrates significant potential in controlling sedimentary P release under weak hydrodynamic conditions. © 2025 Chinese Society for Environmental Sciences. All rights reserved.

关键词： River pollution

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Microbial of low-concentration antisite defects LiFePO4 for boosting lithium ion capture

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Nano Today 2025年 64卷

作者： Yuan, Jianhua Gu, Xiaosong Zhilin, Xing Zhang, Xiaochen Cao, Jianglin Chen, Hong Yu, Fei Ma, Jie Research Center for Environmental Functional Materials College of Environmental Science and Engineering Tongji University 1239 Siping Roa Shanghai200092 China Water Resources and Water Environment Engineering Technology Center Xinjiang Key Laboratory of Engineering Materials and Structural Safety School of Civil Engineering Kashi University Kashi844000 China Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen518055 China College of Oceanography and Ecological Science Shanghai Ocean University Shanghai201306 China

LiFePO4 (LFP) is recognized as a promising electrode material for capturing lithium ions (Li+);however, the presence of antisite defects in LFP crystals blocks the one-dimensional (1D) diffusion channel along the b-axis, thereby slowing down Li+ diffusion and compromising cycling stability. Herein, we propose a "microbial enzyme-catalyzed" green synthesis strategy, successfully preparing polymorphic LFPs characterized by a low concentration of antisite defects (+ diffusion and electron transport to effectively improve kinetics. Additionally, the carbon shell derived from polyphosphorus bacteria improved electrical conductivity and provided space to accommodate the volume expansion of LFP, ultimately enhancing cycling stability. Consequently, LFP@C-7 exhibited excellent Li+ capture capacity (3.05 mmol g−1) and rate (1.01 mmol g−1min−1), with a high separation factor of 212 (Mg/Li ratio of 60) and excellent cycling stability (capacity retention exceeding 83.3 % over 100 cycles). Electrochemical quartz crystal microbalance (EQCM-D) analysis confirmed the three-stage reaction of hydration, ion exchange, and desorption during Li+ capture by LFP@C-7. Furthermore, in-situ X-ray diffraction (XRD) demonstrated a reversible phase transition mechanism (FePO4→LiFePO4→FePO4) throughout the Li+ insertion and extraction cycles. This study provides a new feasible solution for the green synthesis of low-concentration antisite defects LFP. © 2025

关键词： Green Synthesis

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Modeling and Calculation of Core Loss and Heat Distribution in Ultra-Thin Wound Core Reactor Based on Electromagnetic and Fluid-Thermal Coupling

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IEEE Transactions on Magnetics 2025年

作者： Yuan, Jiaxin Li, Xuzhe Zhou, Hang Muramatsu, Kazuhiro State Key Laboratory of Power Grid Environmental Protection School of Electrical Engineering and Automation Wuhan University Wuhan430072 China School of Electrical Engineering and Automation Wuhan University Wuhan430072 China Laboratory of Hydro-Wind-Solar Multi-Energy Control Coordination Wuhan University Wuhan China Department of Electrical and Electronic Engineering Saga University Saga840-8502 Japan

The anode saturable reactor (ASR) is a critical component in converter valves for protecting thyristors. In recent years, fault issues caused by abnormal heating have received widespread attention. However, the complex structure of the ASR presents a significant challenge for accurate temperature rise calculations. This study focuses on an ETT-type ASR and establishes a comprehensive electromagnetic-thermal-flow simulation model. The improved Bertotti loss separation model is applied to calculate core losses, and time-averaged losses are used as the heat source coupled to the temperature field to address the mismatch between the time scales of losses and temperature rise. The temperature distribution of multiple core pairs in the ASR is solved based on a fluid-thermal coupling method and compared with three other methods. Experimental results show that under normal operating conditions, the core temperature of the ASR is approximately 75°C, with slight temperature differences observed across the cores. The proposed heat calculation model provides more accurate results than other models. © 2015 IEEE.

关键词： Saturable core reactors

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Fast Distance protection Scheme for Wind Farm Transmission Lines Considering R-L and Bergeron Models

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Journal of Modern Power Systems and Clean Energy 2023年第3期11卷 840-852页

作者： Zepeng Hu Bin Li Yuping Zheng Tonghua Wu Jiawei He Bin Yao Yaru Sheng Wei Dai Xindong Li Electrical Engineering and Automation Tianjin UniversityTianjinChina State Key Laboratory of Smart Grid Protection and Control NARI Group CorporationNanjingChina

The distributed capacitance of the line becomes larger as the scale of wind farms,the transmission voltage level,and the transmission distance ***,the error of the traditional time-domain distance protection scheme based on the R-L model,which ignores the distributed capacitance of the line,becomes ***,the error of the time-domain fault location method based on the R-L model,especially the maximum error range,is theoretically analyzed in this *** this basis,a novel fault location method based on the RL and Bergeron models is ***,a fast time-domain distance protection scheme is *** the proposed scheme,the error in the fitting calculation is used to construct a weight matrix,and an algorithm for solving the time-domain differential equations is designed to improve the calculation speed and *** with the traditional frequency-domain distance protection scheme,the proposed scheme is independent of the power supply characteristics;thus,it is suitable for wind farm transmission *** addition,compared with the traditional method based on the R-L model,the proposed scheme effectively avoids the negative influence of the distributed capacitance of the line,which significantly improves the operating *** types of faults are simulated by PSCAD/EMTDC to verify the effectiveness and superiority of the proposed scheme.

关键词： Transmission line R-L model time-domain distance protection wind farm

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Simultaneous hydrogen production with photo reforming of lactic acid over MXene derived MoS_(2)/TiO_(2)/Ti_(3)C_(2)nanowires

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Chinese Journal of Catalysis 2025年第4期71卷 234-245页

作者： Seemal Mansoor Zixu Hu Yuxin Zhang Muhammad Tayyab Mazhar Khan Zeeshan Akmal Liang Zhou Juying Lei Muhammad Nasir Jinlong Zhang Key Laboratory for Advanced Materials Shanghai Engineering Research Center for Multi–media Environmental Catalysis and Resource UtilizationJoint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science&TechnologyShanghai 200237China National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical ProcessEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090HeilongjiangChina Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055GuangdongChina COMSATS Univ Islamabad Interdisciplinary Res Ctr Biomed Mat IRCBMLahore CampusLahore 54000Pakistan

Developing efficient photocatalysts to address collaborative energy and environmental crises still faces significant *** this report,we present a highly efficient MXene–based photocatalyst,which is combined with MoS_(2)nano patches and TiO_(2)/Ti_(3)C_(2)(TTC)nanowires through hydrothermal *** all the composites tested,the optimized photocatalyst gave a remarkable H_(2)and revolving polylactic acid(PLA)into pyruvic acid(PA).Achieving a remarkable H_(2)evolution rate of 637.1 and 243.2μmol g^(−1)h^(−1),in the presence of TEOA and PLA as a sacrificial reagent under UV-vis(λ≥365 nm)light *** improved photocatalytic activity is a result of the combination of dual cocatalyst on the surface of TTC photocatalyst,which create an ideal synergistic effect for the generation of PA and the production of H_(2)*** MoS_(2)TiO_(2)/Ti_(3)C_(2)(MTT)composite can generate more photoexcited charge carriers,leading to the generation of more active radicals,which may enhance the system's photocatalytic *** work aims at demonstrating its future significance and guide the scientific community towards a more efficient approach to commercializing H_(2)through photocatalysis.

关键词： Photo reforming Polylactic acid Hydrogen evolution Lactic acid Pyruvic acid

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Country-level antibiotic risk assessment in the multiple environmental matrices based on decennial data

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Environmental Research 2025年 279卷 121762页

作者： Zhou, Dafang Chen, Linpeng Huang, Fuyang Yan, Bingshuang Zhou, Zikun Wang, Bin Liu, Fei Dong, Faqin Ren, Dong MOE Key Laboratory of Solid Waste Treatment and Resource Recycle Southwest University of Science and Technology Sichuan Mianyang China Tianfu Institute of Research and Innovation Southwest University of Science and Technology Chengdu China State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing China Beijing China College of Environmental Science and Engineering China West Normal University Nanchong637009 China

The overuse of antibiotics has led to widespread environmental detection. However, country-level antibiotic risks from a global perspective remain unclear, highlighting a crucial need for antibiotic management worldwide. This study elucidated a global assessment of antibiotic detection frequencies and concentrations across various countries, compared detection levels of antibiotic classifications across compartments in representative countries, and conducted a risk assessment based on predicted no-effect concentrations (PNECs) for antibiotic resistance and minimum inhibitory concentrations (MICs) relevant to microbial nitrogen cycling. A decennial dataset comprising 431,441 records for 137 antibiotics across eight environmental compartments in 45 countries was analyzed. Results showed that Kenya (199 %) had the highest cumulative detection frequencies of four aqueous media. Wastewater from WWTPs (mean: 19.7 ng/L) and animal manure (mean: 2.6 μg/kg) exhibited the highest levels in aqueous and solid media, respectively. From sources to receptors, the highest antibiotic detections and concentrations were found in wastewater from WWTP, where quinolones dominated in France and the USA, and sulfonamides in Kenya (175−357 detections, median: 137−580 ng/L). Similarly, in surface water, sulfonamides were significant in Kenya and Vietnam, quinolones in Kenya (290−2049 detections, median: 32−70 ng/L). From the perspective of cumulative risk, Malaysia, China, and Canada are ranked the top three for both PNECs risk (81 %–191 %) and MICs risk (211 %–236 %). Whether for PNECs or MICs, sulfonamides are the most exceedance-prone antibiotic class across countries and also the highest-risk antibiotic class (median: 33 %). According to the total risk results from different countries, Malaysia (402 %) has the highest risk, followed by Canada (317 %) and China (315 %). The highest antibiotic risks were observed in Asia (medium SDG score), followed by Europe and the Americas (high SDG sco

关键词： Risk assessment

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Risk assessment and resistant mechanism of Fusarium graminearum to fluopyram

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Pesticide Biochemistry and Physiology 2025年 212卷

作者： Jie, Zhang SiYu, Sun Yu, Guo Fuhao, Ren Guilin, Sheng Huan, Wu Baoquan, Zhao Yiqiang, Cai Chunyan, Gu Yabing, Duan State Key Laboratory of Agricultural and Forestry Biosecurity College of Plant Protection Nanjing Agricultural University Nanjing 210095 China Institute for the Control of Agrochemicals Jiangsu Province Nanjing 210036 China Anhui Province Key Laboratory of Pesticide Resistance Management on Grain and Vegetable Pests Anhui Academy of Agricultural Sciences Hefei 230041 China

Fusarium head blight (FHB), caused by the Fusarium graminearum species complex, poses a significant threat to global wheat production and human health due to its high virulence and the ability to produce harmful secondary metabolites. Although various fungicides have been extensively used to control FHB, there is a critical need for more comprehensive information on the resistance of F. graminearum to fluopyram in China. This study evaluated the sensitivity of F. graminearum strains collected from five distinct regions to fluopyram. The EC₅₀ values for fluopyram ranged from 1.20 to 6.42 μg/mL, with an average value of 3.30 μg/mL. Additionally, fluopyram-resistant mutants were generated in the laboratory by chemical taming, with a resistance frequency of 8.3 × 10-⁻³. Furthermore, no significant differences were observed in conidiation, growth rate, and temperature sensitivity between the resistant mutants and the parental strains. It was also determined that fluopyram exhibits positive cross-resistance with pydiflumetofen but no cross-resistance with carbendazim, tebuconazole, and pyraclostrobin. The mutations associated with fluopyram resistance in F. graminearum were identified as SDHB-H248L, SDHC2-A83V, and SDHC2-R86K. Based on these findings, the risk of resistance development in F. graminearum to fluopyram was assessed as moderate. Additionally, it was found that the combination of prothioconazole and fluopyram is more effective than their individual use in field trials. Considering the role of fluopyram in inhibiting DON produced by F. graminearum, it is recommended that fluopyram be used in conjunction with other highly effective fungicides to control FHB, thereby achieving both disease control and mycotoxin reduction. © 2024

关键词： Fluopyram Fusarium head blight Resistance mechanism Resistance risk

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Lipid droplet-targeting fluorescent probes for monitoring hydrogen sulfide in ferroptosis

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Analytica Chimica Acta 2025年 1362卷 344156页

作者： Wang, Chen Wang, Zhaomin Li, Bingyan Yang, Ziye Yang, Ruo Zhu, Keming Liu, Yong State Key Laboratory for Vegetation Structure Functions and Construction Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China Yunnan Key Laboratory of Ecological Protection and Resource Utilization of River-lake Networks Yunnan University Kunming650500 China Microcystins Pollution Control Engineering Research Center of Yunnan Education Department Yunnan Key Laboratory of Soil Erosion Prevention and Green Development Yunnan University Kunming650500 China School of Medicine Yunnan University Kunming650500 China

Background: Ferroptosis represents a unique form of regulated cell death that is distinct from apoptosis, necroptosis, and other modalities. It is characterized by iron-dependent lipid peroxidation and the depletion of glutathione (GSH). Hydrogen sulfide (H2S), a key endogenous gaseous signaling molecule, plays an essential role in various biological and physiological processes. However, owing to the lack of advanced monitoring techniques, elucidating the dynamic fluctuations of H2S during ferroptosis has posed significant challenges for researchers. Results: In this study, we designed and synthesized two lipid droplet-targeting fluorescent probes (Pr-SERA and Pr-SERB) to investigate the dynamic changes of H2S during ferroptosis. The results indicated that these probes possess high specificity, enabling effective monitoring of H2S concentration fluctuations. Specifically, in the Erastin-induced cell model, a gradual decrease in fluorescence intensity was observed;in contrast, Fer-1-treated cells exhibited a significant increase in fluorescence intensity. This observation aligns with the mechanism by which Erastin suppresses H2S production via the depletion of intracellular GSH, thereby further validating the progressive decline of H2S levels during ferroptosis. Moreover, these probes demonstrated excellent detection performance in zebrafish in vivo models, confirming their suitability and reliability for biological applications. Overall, the fluorescent probes developed in this study serve as valuable tools for elucidating the mechanisms of active molecules involved in ferroptosis. Significance: It is anticipated that the methodology developed in this investigation will provide a comprehensive and robust analytical tool for the accurate, in-situ quantification of H2S. This approach holds significant promise for advancing the understanding of ferroptosis and its associated disorders. © 2025 Elsevier B.V.

关键词： Cell death

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Analytical and Numerical Investigation of Primary and Cross Waves in a Flume with Double Shoals

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China Ocean Engineering 2025年第2期 290-302页

作者： WANG Gang XIN Song-gang LI Chuan-zhong FU Rui-li ZHANG Yao SHI Hua-bin Key Laboratory of Coastal Disaster and Protection (Hohai University) Ministry of Education College of Mathematics and Systems Science Shandong University of Science and Technology National Marine Hazard Mitigation Service Ministry of Natural Resources State Key Laboratory of Internet of Things for Smart City and Department of Ocean Science and Technology University of Macau

Flume experiments play a pivotal role in studying wave propagation, with wave elements typically assumed to remain constant in the perpendicular direction. However, evident cross wave phenomena were observed within flumes under certain conditions. This paper presents new analytical solutions for both primary and cross waves on double shoals in a flume via linear shallow-water equations, which may be used to idealize dynamic experimental configurations of coral reefs. The primary waves on double shoals are described by the associated Legendre functions, whereas the ultimate solutions are derived by considering the incident and reflected waves in front of a bathymetry and the transmitted waves positioned behind it. The effects of the angular frequency and topographic parameters on the primary waves are subsequently analyzed. Cross waves on double shoals constitute a type of topographically trapped wave whose solutions are formulated by combining the first and second types of the associated Legendre functions. The angular frequency is not only determined by the wavenumber but also influenced by the topographic parameters. Numerical experiments are conducted to investigate the generation mechanism of cross waves. The consistency between the numerical results and analytical solutions confirms the validity of the new analytical framework of cross waves on double shoals.

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Sex-specific reproductive toxicity of subacute exposure to glufosinate-ammonium in zebrafish (Danio rerio)

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Science of the Total Environment 2025年 963卷 178489页

作者： Zhou, Weiqi Dang, Yao Zhang, Yang Chen, Xichao Li, Wei Lei, Xishuang Wang, Jianghua College of Fisheries Huazhong Agricultural University Wuhan430070 China State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment South China Institute of Environmental Sciences Ministry of Ecology and Environment Guangzhou510655 China Hubei Engineering Technology Research Center for Aquatic Animal Disease Control and Prevention Wuhan430070 China

Glufosinate-ammonium (GLA) is a common agricultural herbicide used worldwide. It can be transported into water bodies and can persist for long periods, posing a risk to non-target aquatic organisms. In this study, adult zebrafish were exposed to GLA (0, 0.6, 6, and 60 mg/L) for 21 days to evaluate its effect on reproduction. Fecundity, offspring development, sex hormone levels, histological changes, and apoptosis in the gonads were measured, and the expression levels of genes related to the hypothalamic-pituitary-gonadal-liver (HPG-L) axis, the cell cycle, and apoptosis were examined to assess the toxic mechanisms of GLA. Higher GLA concentrations were measured in the ovaries than in the testes. Decreases in spawning count, sperm density, and motility were observed. Meanwhile, the offspring survival rate decreased, and larval offspring swimming behavior was inhibited. GLA exposure significantly increased estradiol levels in females and reduced testosterone levels in males by affecting the expression of HPG-L axis genes. Furthermore, GLA exposure induced apoptosis in gonadal cells by controlling the expression of genes involved in cell cycle regulation and apoptotic pathways. Notably, the smaller effects of GLA concentration on body weight, gonad somatic index value, gonadal cell composition, and gonadal cell apoptosis were observed in male fish than in female fish. Taken together, GLA can accumulate in the gonads and cause sex-specific alterations in the expression of genes involved in the HPG-L axis and subsequent steroidogenesis and gametogenesis, which may be responsible for GLA-induced reproductive and developmental toxicities. © 2025 Elsevier B.V.

关键词： Macroinvertebrates

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