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Toxicokinetics and responses of multiple biomarkers of sediment-associated fluoroquinolones in the freshwater benthic gastropod Bellamya aeruginosa 认领 引用 被引量：1
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作者 Meng Wang Xiaoxu Zhang +4 位作者 Lu Li Xiangnan Chen Jie Du Yingru Zhou Taowu Ma 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第1期292-301,共10页
Fluoroquinolones(FQs)have the propensity to accumulate in sediments once introduction into aquatic envi-ronments,thereby posing potential threats to benthic organisms,yet the ecotoxicity of sediment-associated FQs rem... Fluoroquinolones(FQs)have the propensity to accumulate in sediments once introduction into aquatic envi-ronments,thereby posing potential threats to benthic organisms,yet the ecotoxicity of sediment-associated FQs remains unclear.In this study,the toxicokinetics and responses of multiple biomarkers in Bellamya aeruginosa,exposed to the three commonly used FQs(norfloxacin,NOR;ciprofloxacin,CIP;levofloxacin,LEVO)at envi-ronmentally relevant concentrations were investigated under sediment exposure scenario.The results revealed that FQs were effectively ingested by B.aeruginosa from sediments,CIP showing the highest bioaccumulation(180.59μg/kg),followed by NOR(74.49μg/kg)and LEVO(36.02μg/kg).CIP exhibiting a highest uptake rate constant(Ks)(4.64 g/(g·day))and the lowest elimination rate constant(Ke)(0.05 g/(g·day)).The descending order of biological half-life is as follows:CIP(13.62 days),LEVO(8.14 days),and NOR(6.83 days).NOR induced the activity of superoxide dismutase,catalase,and glutathione-S-transferase while CIP and LEVO depressed their activities and increased malondialdehyde content,indicating a more pronounced oxidative damage to B.aerug-inosa caused by CIP and LEVO than NOR.Furthermore,all three FQs were found to induce DNA damage and elevate acetylcholinesterase activity,suggesting distinct genotoxic and neurotoxic effects.Interestingly,despite its low bioaccumulation potential,LEVO exhibited high toxicity towards B.aeruginosa.These findings enhance our understanding of the ecotoxicity of FQs in sediments,providing further evidence of their potential ecological risks. 展开更多
关键词 Fluoroquinolones Sediments Bellamya aeruginosa Toxicokinetics Ecotoxicity
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Fracture characteristics and fracture interface buckling mechanism of cantilever rock mass under non-uniformly distributed load 认领 引用 被引量：1
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作者 Wenlong Shen Ziqiang Chen +7 位作者 Meng Wang Jianbiao Bai Zhengyuan Qin Tongqiang Xiao Ningkang Meng Juntao Liu Yan Gai Hua Nan 《International Journal of Mining Science and Technology》 SCIE EI CAS CSCD 2026年第2期375-397,共23页
This study examined non-uniform loading in goaf cantilever rock masses via testing,modeling,and mechanical analysis to solve instantaneous fracture and section buckling from mining abutment pressure.The study investig... This study examined non-uniform loading in goaf cantilever rock masses via testing,modeling,and mechanical analysis to solve instantaneous fracture and section buckling from mining abutment pressure.The study investigates the non-uniform load gradient effect on fracture characteristics,including load characteristics,fracture location,fracture distribution,and section roughness.A digital model for fracture interface buckling analysis was developed,elucidating the influence of non-uniform load gradients on Fracture Interface Curvature(FIC),Buckling Rate of Change(BRC),and Buckling Domain Field(BDF).The findings reveal that nonlinear tensile stress concentration and abrupt tensile-compressive-shear strain mutations under non-uniform loading are fundamental mechanisms driving fracture path buckling in cantilever rock mass structures.The buckling process of rock mass under non-uniform load can be divided into two stages:low load gradient and high gradient load.In the stage of low gradient load,the buckling behavior is mainly reflected in the compression-shear fracture of the edge.In the stage of high gradient load,a buckling band along the loading direction is gradually formed in the rock mass.These buckling principles establish a theoretical basis for accurately characterizing bearing fractures,fracture interface instability,and vibration sources within overlying cantilever rock masses in goaf. 展开更多
关键词 Cantilever rock mass Non-uniformly distributed load Fracture characteristics Buckling fracture Digital model
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All-fiber oscillators by femtosecond laser direct-writing fiber Bragg gratings breaking through kilowatts 认领 引用
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作者 XINDA LU RONG ZHAO +10 位作者 CHENHUI GAO BINYU RAO XIN TIAN HAO LI ZHEN HUANG QIUSHI QIN XINYU YE MENG WANG BAOLAI YANG ZILUN CHEN ZEFENG WANG 《Photonics Research》 SCIE EI CAS CSCD 2026年第5期1789-1798,共10页
Femtosecond laser direct writing of fiber Bragg gratings(FBGs)offers mask-free flexibility,but high insertion loss and unfavorable thermal slope have limited its use in high-power all-fiber oscillators.Based on our pr... Femtosecond laser direct writing of fiber Bragg gratings(FBGs)offers mask-free flexibility,but high insertion loss and unfavorable thermal slope have limited its use in high-power all-fiber oscillators.Based on our previously proposed femtosecond laser line-guided plane-by-plane direct-writing method,we refine the grating-inscription technique for the oscillator cavity mirrors.This optimization maintains the target reflectivity while achieving more uniform refractive index modulation with a modulation depth below 1×10-3,thereby reducing the thermal slope. 展开更多
关键词 thermal slope refractive index modulation femtosecond laser oscillator cavity mirrorsthis all fiber oscillators direct writing insertion loss fiber bragg gratings fbgs offers
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Upcycling PET Plastics with Methanol into Lactic Acid and 1,4-Cyclohexanedicarboxylic Acid 认领 引用
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作者 Zhenbo Guo Haoyu Chen +3 位作者 Shuheng Tian Meiqi Zhang Meng Wang Ding Ma 《Engineering》 SCIE EI CSCD 2026年第3期64-70,共7页
The random disposal and incineration of plastic materials have caused a significant waste of resources and environmental pollution,which contradicts the recent emphasis on energy conservation and emission reduction.Ca... The random disposal and incineration of plastic materials have caused a significant waste of resources and environmental pollution,which contradicts the recent emphasis on energy conservation and emission reduction.Carbon and hydrogen sources stored in plastic wastes have immense potential for the development of a carbon-neutral future.In this study,we use a two-step process for upcycling polyethylene terephthalate(PET),the most common polyester plastic,with methanol into high-value products,that is,lactic acid(LA)and 1,4-cyclohexanedicarboxylic acid(CHDA),using a commercial Ru/C catalyst.After the depolymerization of PET in a NaOHmethanol solution,the produced ethylene glycol can further react with methanol to obtain LA and hydrogen,and the hydrogen is then employed in the hydrogenation step to obtain CHDA in high yield.Notably,our method does not require an external supply of hydrogen gas(H2).This study reveals a new pathway for upcycling the two monomers from PET. 展开更多
关键词 Upcycling PET plastics Methanol Lactic acid 1,4-Cyclohexanedicarboxylic acid
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Covalent network topology engineering for synergistic ionogels in stable lithium metal batteries 认领 引用
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作者 Meng Wang Huangxuanyu Yang +3 位作者 Zhaoyuan Ding Hu Zhang Hao Wu Ruiping Liu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第5期421-433,I0010,共13页
Unraveling the critical role of network topology in ionogel electrolytes,this study demonstrates that a covalent integration strategy is paramount for synergizing mechanical robustness and ion transport.Through a comp... Unraveling the critical role of network topology in ionogel electrolytes,this study demonstrates that a covalent integration strategy is paramount for synergizing mechanical robustness and ion transport.Through a comparative design,a multi-network ionogel featuring covalently anchored poly(ethylene glycol)diacrylate segments within a rigid-flexible liquid crystal polymer/polyacrylamide framework was developed.In contrast to its physically blended counterpart,this covalently engineered ionogel exhibits a well-defined,bi-continuous architecture,as confirmed by multi-scale characterization.This optimized topology confers the material with a remarkable combination of properties:high ionic conductivity(5.55 mS cm-1),exceptional toughness(3.217 MJ m-3),and a low activation energy(6.87 kJ mol-1).Mechanistically,the covalent network not only provides continuous ion pathways but also facilitates the in-situ formation of a stable,LiF/Li3N-rich solid electrolyte interphase at the electrode-electrolyte interface.Consequently,it enables ultra-stable Li||Li symmetric cells exceeding 1600 h at 0.1 mA cm-2and demonstrates excellent performance in Li||LiFePO4cells.This work demonstrates that,within the multi-network ionogel design,precise topological control via covalent engineering proves to be a more effective strategy than physical blending for developing high-performance electrolytes for stable lithium metal batteries. 展开更多
关键词 Lithium-metal batteries Ionogel electrolyte Multi-network polymer Covalent crosslinking Rigid-flexible synergy
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System with Thermal Management for Synergistic Water Production,Electricity Generation and Crop Irrigation 认领 引用
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作者 Meng Wang Zixiang He +7 位作者 Haixing Chang Yen Wei Shiyu Zhang Ke Wang Peng Xie Rupeng Wang Nanqi Ren Shih‑Hsin Ho 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第2期539-552,共14页
Sustainable water,energy and food(WEF)supplies are the bedrock upon which human society depends.Solar-driven interfacial evaporation,combined with electricity generation and cultivation,is a promising approach to miti... Sustainable water,energy and food(WEF)supplies are the bedrock upon which human society depends.Solar-driven interfacial evaporation,combined with electricity generation and cultivation,is a promising approach to mitigate the freshwater,energy and food crises.However,the performance of solar-driven systems decreases significantly during operation due to uncontrollable weather.This study proposes an integrated water/electricity cogeneration-cultivation system with superior thermal management.The energy storage evaporator,consisting of energy storage microcapsules/hydrogel composites,is optimally designed for sustainable desalination,achieving an evaporation rate of around 1.91 kg m-2h-1.In the dark,heat released from the phase-change layer supported an evaporation rate of around 0.54kg m-2h-1.Reverse electrodialysis harnessed the salinity-gradient energy enhanced during desalination,enabling the long-running WEC system to achieve a power output of~0.3 W m-2,which was almost three times higher than that of conventional seawater/surface water mixing.Additionally,an integrated crop irrigation platform utilized system drainage for real-time,on-demand wheat cultivation without secondary contaminants,facilitating seamless WEF integration.This work presents a novel approach to all-day solar water production,electricity generation and crop irrigation,offering a solution and blueprint for the sustainable development of WEF. 展开更多
关键词 Thermal management Water/electricity cogeneration Cultivation Water–energy–food nexus Sustainable development
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Synergistic optimization of charge transfer and active sites in Bi12O17Br2/CuTCPP for efficient CO2 photoreduction 认领 引用
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作者 Tiange Wei Mengxia Ji +5 位作者 Yi Zhang Keke Wang Meng Wang Yuanbin She Jiexiang Xia Huaming Li 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第6期360-366,共7页
Utilizing sunlight to directly convert CO2into value-added chemicals presents a pivotal strategy for sustainable CO2conversion and mitigating environmental challenges.Herein,a surfacemounted 5,10,15,20-tetra(4-c... Utilizing sunlight to directly convert CO2into value-added chemicals presents a pivotal strategy for sustainable CO2conversion and mitigating environmental challenges.Herein,a surfacemounted 5,10,15,20-tetra(4-carboxyphenyl)porphyrin copper(Ⅱ)(CuTCPP)anchoringonBi12O17Br2nanotubes(CuTCPP/Bi12O17Br2)heterojunction was employed as an operable platformfor photocatalytic CO2reduction.The built-in electric field at the interface facilitates the efficient electron transfer from Bi12O17Br2to CuTCPP,significantly enhancing photoexcited charge separation and transfer kinetics.Besides,the Cu(Ⅱ)sites in CuTCPP act as supplementary catalytic centers that reduce the adsorption and activation energy barrier of CO2,thus accelerating the formation of *CO intermediates.The CuTCPP/Bi12O17Br2heterojunction exhibits enhanced photoreduction activity of CO2,achieving a CO evolution rate of 92.2μmol g-1h-1,which represents a 4.0-foldenhancement over Bi12O17Br2.This work offers new insights into the development of heterojunctions with synergistically optimized charge transfer and active sites. 展开更多
关键词 Charge transfer Active sites Cu porphyrin CO2photoreduction
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High-pressure synthesis and sequential ferrimagnetic ordering and spin glass transition of an Fe/Ru disordered quadruple perovskite CeCu3Fe2Ru2O12 认领 引用
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作者 Sumei Li Gaochao Zhao +5 位作者 Meng Wang Lihua Yin Peng Tong Xuebin Zhu Jie Yang Yuping Sun 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第4期623-630,共8页
We successfully prepared an A-site-ordered quadruple perovskite oxide CeCu3Fe2Ru2O12by using a high-pressure method(10 GPa,1400 K).The compound crystallizes in the Im3 space group,with A-site ordering of C... We successfully prepared an A-site-ordered quadruple perovskite oxide CeCu3Fe2Ru2O12by using a high-pressure method(10 GPa,1400 K).The compound crystallizes in the Im3 space group,with A-site ordering of Ce and Cu ions in a ratio of 1:3,but B-site disordered distribution of Fe and Ru ions.Bond-value-sum calculations and x-ray photoelectron spectroscopy measurement manifest that the charge distribution is Ce3.5+Cu2+3Fe3+2Ru4.25+2O12.A ferrimagnetic phase transition occurs at TC=73.6 K followed by a spin glass behavior at 50.3 K consistent with the conventional dynamical scaling power law.Electrical transport measurement shows that the intrinsic electrical behavior is semiconducting and the resistivity obey the adiabatic small-polaron model.The specific heat follows a T2law instead of traditional phonondominated T3behavior implying a finite energy gap in the excitation spectrum. 展开更多
关键词 A-site ordered perovskite high pressure synthesis magnetic properties
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Exciplex-enabled fully stretchable OLEDs achieve a record external quantum efficiency of 17% 认领 引用
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作者 Meng Wang Liang Li 《Journal of Semiconductors》 EI CAS CSCD 2026年第6期29-32,共4页
Organic light-emitting diodes(OLEDs)are promising candidates for on-skin applications due to their intrinsic stretchability[1−4].However,the external quantum efficiency(EQE)of stretchable OLEDs has long been limited t... Organic light-emitting diodes(OLEDs)are promising candidates for on-skin applications due to their intrinsic stretchability[1−4].However,the external quantum efficiency(EQE)of stretchable OLEDs has long been limited to approximately 10%[5−8].This limitation stems from two primary factors:first,the incorporation of an insulating elastomer matrix,which is necessary to impart stretchability to light-emitting materials,introduces non-conjugated moieties that hinder exciton energy transfer and charge transport;second,conventional stretchable electrodes exhibit insufficient electrical properties and poor interfacial contact,failing to meet the requirements for efficient charge injection.Consequently,achieving high electroluminescent efficiency in fully stretchable OLEDs remains a formidable challenge. 展开更多
关键词 elastomer matrix exciton energy exciplex external quantum efficiency stretchable OLEDs skin applications insulating elastomer matrixwhich exciton energy transfer
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GPS-Synchronized Monitoring of Core-Collapse Supernova Bursts with PandaX-4T via Coherent Elastic Neutrino-Nucleus Scattering 认领 引用
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作者 Binyu Pang Zihao Bo +109 位作者 Wei Chen Xun Chen Yunhua Chen Chen Cheng Xiangyi Cui Manna Deng Yingjie Fan Deqing Fang Xuanye Fu Zhixing Gao Yujie Ge Lisheng Geng Karl Giboni Xunan Guo Xuyuan Guo Zichao Guo Chencheng Han Ke Han Changda He Jinrong He Houqi Huang Junting Huang Yule Huang Ruquan Hou Xiangdong Ji Yonglin Ju Xiaorun Lan Chenxiang Li Jiafu Li Mingchuan Li Peiyuan Li Shuaijie Li Tao Li Yangdong Li Zhiyuan Li Qing Lin Jianglai Liu Yuanchun Liu Congcong Lu Xiaoying Lu Lingyin Luo Yunyang Luo Yugang Ma Yajun Mao Yue Meng Ningchun Qi Zhicheng Qian Xiangxiang Ren Dong Shan Xiaofeng Shang Xiyuan Shao Guofang Shen Manbin Shen Wenliang Sun Xuyan Sun Yi Tao Yueqiang Tian Yuxin Tian Anqing Wang Guanbo Wang Hao Wang Haoyu Wang Jiamin Wang Lei Wang Meng Wang Qiuhong Wang Shaobo Wang Shibo Wang Siguang Wang Wei Wang Xu Wang Zhou Wang Yuehuan Wei Weihao Wu Yuan Wu Mengjiao Xiao Xiang Xiao Kaizhi Xiong Jianqin Xu Yifan Xu Shunyu Yao Binbin Yan Xiyu Yan Yong Yang Peihua Ye Chunxu Yu Ying Yuan Zhe Yuan Youhui Yun Xinning Zeng Minzhen Zhang Peng Zhang Shibo Zhang Siyuan Zhang Shu Zhang Tao Zhang Wei Zhang Yang Zhang Yingxin Zhang Yuanyuan Zhang Li Zhao Kangkang Zhao Jifang Zhou Jiaxu Zhou Jiayi Zhou Ning Zhou Xiaopeng Zhou Zhizhen Zhou Chenhui Zhu PandaX Collaboration 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第2期367-373,共7页
The landmark detection of neutrinos from SN1987A marked the dawn of neutrino astrophysics.The neutrino burst provided essential insights into fundamental properties of neutrinos and served as key probes of stellar evo... The landmark detection of neutrinos from SN1987A marked the dawn of neutrino astrophysics.The neutrino burst provided essential insights into fundamental properties of neutrinos and served as key probes of stellar evolution and supernova dynamics.The recent advancement in coherent elastic neutrino-nucleus scattering enables the detection of core-collapse supernova burst neutrinos using tonne-scale liquid xenon detectors originally designed for dark matter direct detection.Leveraging this capability,we developed and deployed an online supernova monitoring system for the PandaX-4T experiment.This system features a GPS module with millisecond-level timing precision,a low false-alarm rate,and high sensitivity to galactic core-collapse supernova explosion events.The methodology is robust,directly scalable,and planned for implementation in the next-generation PandaX-20T experiment. 展开更多
关键词 dark matter direct detectionleveraging GPS synchronized monitoring neutrino astrophysics dark matter direct detection core collapse supernova supernova monitoring system PandAX t coherent elastic neutrino nucleus scattering
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Investigation of coupled acoustic and electrical responses and early warning approaches during re-loading of damaged coal 认领 引用
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作者 Xiayan Zhang Enyuan Wang +7 位作者 Rongxi Shen Huihan Yang Haishan Jia Shenglei Zhao Zhoujie Gu Zhenhua Hu Chong Li Meng Wang 《International Journal of Mining Science and Technology》 SCIE EI CAS CSCD 2026年第4期743-771,共29页
Initial damage from engineering disturbances in deep coal mining degrades mechanical properties and heightens dynamic-hazard risks,challenging conventional monitoring.This study probes the coupled acoustic-electrical ... Initial damage from engineering disturbances in deep coal mining degrades mechanical properties and heightens dynamic-hazard risks,challenging conventional monitoring.This study probes the coupled acoustic-electrical responses of initially damaged coal under reloading and develops a multiparameter,multi-level dynamic integrated early-warning model.Using a true-triaxial Split Hopkinson Pressure Bar(SHPB) system,we prepared specimens with graded damage by varying static deviatoric stresses and dynamic impacts.Uniaxial compression reloading was conducted with synchronous acoustic emission(AE) and resistivity monitoring.Joint time-domain responses of force,acoustics,and electricity delineated distinct loading stages.Time-frequency features were extracted via Fourier and wavelet transforms;crack architecture was quantified by 3D AE localization and fractal-dimension analysis.Initial damage markedly reduced load-bearing capacity.Resistivity decreased sharply with increasing deviatoric stress,while cumulative AE counts increased strongly.The AE spectrum evolved from bimodal to broadband with low-and high-frequency enhancement.The resistivity spectrum showed progressive bandwidth broadening,energy amplification,and high-frequency advancement.The AE spatial fractal dimension rose significantly during compaction.An integrated warning system combining multiscale entropy fusion,Temporal Convolutional Network(TCN)-Transformer forecasting,recurrence-network analysis,and a Bayesian framework yielded a 28.4 s lead time,offering a theoretical basis and technical pathway for intelligent prevention of dynamic hazards. 展开更多
关键词 Acousto-electric coupling Time-frequency analysis Rockburst probability early warning Multiscale entropy(MSE) TCN-Transformer Recurrence network
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Application of temperature regulation of complex stability constants in removal of key impurities from lanthanum oxide 认领 引用
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作者 Yuanxuan Yu Meng Wang +4 位作者 Qingping Zhang Zongyu Feng Yang Xu Guang Yang Zhiqing Yang 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第7期2215-2226,I0008,共12页
In the ion-exchange process for separating and purifying rare earth elements,the separation is primarily achieved through the differences in the complexation reactions between the rare earth elements and the eluent.Th... In the ion-exchange process for separating and purifying rare earth elements,the separation is primarily achieved through the differences in the complexation reactions between the rare earth elements and the eluent.Therefore,enhancing these reaction differences is crucial to improving separation efficiency.In this study,the dissociation constants of ethylene diamine tetraacetic acid(EDTA)at different temperatures were determined by pH potentiometric titration.The speciation evolution of metal-EDTA complexes was elucidated through simulations conducted with Visual MINTEQ,enabling a systematic investigation into the temperature dependence of stability constants for EDTA complexes with La3+and representative impurity metal ions(Ce3+,Mg2+,Al3+,Ca2+,Cu2+,Zn2+).Building upon this,static desorption studies and ion-exchange experiments were conducted to validate the removal of key impurities in lanthanum oxide.Experimental results show that,Mg2+and Ca2+exhibit better selective separation from La3+due to the significant differences in complexation constants.The difference in complexation stabilization constants between La3+and impurity ions reaches the maximum at 30℃.The temperature primarily enhances the reaction difference in the separation system by modulating the distribution of complex species.Desorption studies indicate that increasing the temperature improves the separation coefficient between La and impurity elements.After optimization,the ion-exchange method achieves a La recovery rate of 84.91 wt%and a total impurity removal rate exceeding92.50 wt%.Under the optimized elution conditions,an elution process was applied to the real feed solution,yielding a lanthanum oxide product with a relative purity of 99.99991 wt%.This work deepens the understanding of temperature-induced regulation of complexation stability constants and provides a novel approach for ion-exchange purification of rare earth elements. 展开更多
关键词 Rare earths Lanthanum oxide Complex stability constants pH potentiometric titration method Ion exchange Separation
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Novel insights into the legacy effects of NBPT on fungal interactions and pathogenic fungal reduction in agricultural soils 认领 引用
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作者 Tikun Guan Jilin Lei +7 位作者 Huangwei Liu Jiarui Li Ting Yang Qi Wang Han Wu Meng Wang Weizheng Shu Rui Liu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第7期328-338,共11页
The use of urease inhibitors,such as N-(n-butyl)thiophosphoric triamide(NBPT),has been seen as an effective strategy to mitigate nitrogen loss from agricultural soils.However,while previous studies have assessed micro... The use of urease inhibitors,such as N-(n-butyl)thiophosphoric triamide(NBPT),has been seen as an effective strategy to mitigate nitrogen loss from agricultural soils.However,while previous studies have assessed microbial impacts under field conditions with repeated NBPT applications,the legacy effects of NBPT degradation on microbial interactions and functions remain underexplored.This study investigated post-degradation impacts of NBPT on soil nitrogen transformation,ammonia(NH3)volatilization,and the diversity,interaction,and function of microbial communities.Soil samples from five diverse Chinese locations were incubated with different NBPT concentrations(0.04%,0.09%,0.15%,0.20%)for 42 days to evaluate sustained effects after NBPT dissipation.Results showed that NBPT significantly slowed urea hydrolysis and reduced excessive ammonium nitrogen(NH4+-N)accumulation.Specifically,cumulative NH3 emissions decreased by 4.54%-49.36% across the tested soils.Moreover,NBPT strengthened interactions among soil fungi without significantly altering the α-diversity of bacterial and fungal communities.Notably,the relative abundance of Aureobasidium(a fungal genus including potential plant pathogens)in NBPT-amended soils(all concentrations pooled)decreased by 98.28%compared to urea-only controls.These findings highlight NBPT's role in fostering resilient microbial communities and suppressing pathogens,underscoring its legacy benefits for soil health despite transient microbial dynamics during incubation.Thus,NBPT application not only effectively reduces NH3 volatilization and regulates nitrogen transformation but also positively impacts soil microbial interactions and functions,promoting improved soil health and ecosystem resilience. 展开更多
关键词 Urease inhibitors Nitrogen transformation NH3volatilization Co-occurrence network Microbial community function
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Cd toxicity thresholds in response to freeze-thaw and wetting-redrying cycles in various parental paddy soils 认领 引用
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作者 Jing Wang Meng Wang +6 位作者 Lei Yu Xiaoyi Sun Luyao Qin Jiaxiao Liu Ruyan Zhou Yun Han Shibao Chen 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第5期455-462,共8页
In order to clarify the stabilization characteristics of cadmium(Cd)after different aging methods,soil culture tests of freeze-thaw,wetting-redrying cycles,and natural aging affecting on Cd phytotoxicity to rice were ... In order to clarify the stabilization characteristics of cadmium(Cd)after different aging methods,soil culture tests of freeze-thaw,wetting-redrying cycles,and natural aging affecting on Cd phytotoxicity to rice were conducted.According to the national food safety standard GB2762-2022,the toxicity thresholds(RT)of Cd under different aging modes were derived.The results showed that:as the aging time increased to 360 days,the RT of different parent soils increased by 28.49%-204.86%(freeze-thaw),37.80%-192.55%(natural),34.45%-205.87%(wetting-redrying),compared with 14d’aging.Compared with natural aging:The RT of granite soil(SG),river sandy mud(SR),stucco field(SS)increased by 99.46%under freeze-thaw aging,decreased by 66.68%under wetting-redrying aging;The RT of purple sandy shale(SP),quaternary red clay soil(SQ)decreased by 20.32%under freeze-thaw aging,increased by 70.99%under wetting-redrying aging.RT of yellow mud soil(SY)showed a decreasing trend under unnatural aging.The prediction models of RT based on different parental characteristics under different aging methods were established:log10(AF360)=1.038AG-0.251Chaol-1.052,log10(AF360)=0.481pH+1.492CEC+1.223MW-6.375,log10(AF360)=0.119pH+0.264CEC+1.091AD+0.263.The regression coefficients of aging factors(AF360),which were 1.04,1.49,and 1.09 respectively,provided that water-stable aggregates(AG),cation exchange capacity(CEC),and the adhesive film(AD)were the primary controlling factors influencing RT with positive correlations.This study provided an important basis for evaluating different long-term aging modes affecting on soil Cd toxicity behavior and RT of Cd on rice. 展开更多
关键词 Cd bioavailability Parent paddy soils Toxicity threshold Aging Predictive models
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Upcycling Polyethylene into Separable Aromatics Through Tandem Catalysis with CO2at Atmospheric Pressure 认领 引用
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作者 Wenjun Chen Mingyu Chu +4 位作者 Yue Liu Yiyi Fan Meiqi Zhang Meng Wang Fan Zhang 《Engineering》 SCIE EI CSCD 2026年第3期95-105,共11页
Selective conversion of two waste carbon resources-polyethylene and COz-into valuable chemicals through tandem catalysis offers a promising way to recover resources.However,current systems often have low selectivity f... Selective conversion of two waste carbon resources-polyethylene and COz-into valuable chemicals through tandem catalysis offers a promising way to recover resources.However,current systems often have low selectivity for light aromatics in the liquid products,leading to mixtures of linear and cyclic compounds that are hard to separate.In this study,we developed a one-step process using an oxidezeolite catalyst(CuFeO2+Ga-[Ga]/Zeolite Socony Mobil(ZSM)-5)at 400℃ and atmospheric pressure to produce separable liquid aromatics and CO from polyethylene and CO2 at the same time.The synergistic effect between cationic Ga species and Brønsted acid sites in Ga-[Ga]/ZSM-5 promotes dehydrogenation while reducing typical hydrogen-transfer reactions,resulting in significant H2 production.Meanwhile,the CuFeO2 component supports the reverse water-gas shift reaction,shifting the reaction equilibrium and increasing the formation of aromatics through better hydrogen utilization.This cascade catalytic system achieves 99%selectivity toward separable aromatics in the liquid products and 91.9%toward C1-C2 aliphatic hydrocarbons in the gaseous products.The yield of aromatics reaches 75.3 weight percent(wt%),with benzene,toluene,and xylene making up 81.1%of this fraction.Additionally,CO2 conversion reaches up to 10.9 mmol per gram of polyethylene.This strategy effectively turns waste plastics and CO2 into valuable products,offering a practical approach for waste valorization and CO2 utilization. 展开更多
关键词 Polyethylene CO2 Tandem catalysis Catalytic conversion Aromatics
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Measurement of ice content in silty clay based on elastic wave velocity 认领 引用
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作者 Yongming Cai Xu Li +2 位作者 Wenhua Chen Meng Wang Shuangfei Zheng 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第7期5817-5828,共12页
To establish a continuous and non-destructive method for measuring soil ice content,this study explores the relationship between wave velocity and ice content,together with the underlying mechanisms.Wave velocity meas... To establish a continuous and non-destructive method for measuring soil ice content,this study explores the relationship between wave velocity and ice content,together with the underlying mechanisms.Wave velocity measurements and nuclear magnetic resonance(NMR)tests were conducted on fivesilty clay specimens with a range of initial water contents.Based on the results,predictive models for ice content were developed using wave velocity as the input parameter,with initial water content and test temperature as influencingfactors,and their accuracy was validated.Results show that under positive temperatures,temperature has little effect on wave velocity,while higher initial water content reduces wave velocity,reflectingthe weakening of the soil skeleton.Under sub-zero conditions,temperature exerts a pronounced influence:wave velocity increases sharply as temperature decreases,but the growth rate slows below -5℃.Specimens with higher initial water contents exhibit a more pronounced increase and reach higher finalwave velocities.NMR results further confirmthat the rise in ice content during freezing closely matches the observed increase in wave velocity,indicating that ice content is the dominant factor controlling wave velocity in frozen soils.Two predictive models were established.The model incorporating initial water content provides higher accuracy,whereas the temperature-based model offers greater applicability.Overall,the findingsdemonstrate a feasible and efficientapproach for rapid estimation of soil ice content,which may support frozen soil research and engineering applications. 展开更多
关键词 Frozen soils Ice content Wave velocity Nuclear magnetic resonance(NMR) Silty clay
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Aggregate-mediated redistribution and bioavailability of cadmium in paddy soils under alternating redox conditions 认领 引用
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作者 Luyao Qin Xiaoyi Sun +5 位作者 Lei Yu Jing Wang Yuanqing Chao Jason C.White Meng Wang Shibao Chen 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第6期12-22,共11页
Unstable pe+pH(a soil redox parameter representing the total variation of pH and Eh,pe=−log10(e−)=Eh(mV)/59.2)environment caused by alternation flooding and drainage cycles can alter aggregate structure.However,... Unstable pe+pH(a soil redox parameter representing the total variation of pH and Eh,pe=−log10(e−)=Eh(mV)/59.2)environment caused by alternation flooding and drainage cycles can alter aggregate structure.However,the mechanism of aggregate restructuring and its impact on Cd distribution remains poorly understood.Contaminated soils were collected from three different rice-growing regions in China and then were subjected to a 40-day anaerobic incubation followed by a 20-day oxidation period.The contribution of known binders,including iron(Fe)oxides and soil organic carbon(SOC),to aggregate structural stability and its impact on DTPA-Cd distribution were investigated.The results show that flooding decreased laterite soil pe+pH from 9.56 to 1.73,resulting in the disintegration of macroaggregates and formation of microaggregates.In addition,free Fe oxides(Fe DCB)were mainly distributed in macroaggregates,while amorphous Fe oxides(Fe OA)and SOC tended to accumulate in microaggregates.The greatest decrease of 65.2%–73.2%was observed in aggregate mean weight diameter(MWD)after dithionite-citrate-bicarbonate(DCB)extraction,which indicates that Fe DCB contributed more to aggregate stability than Fe OA and SOC.Furthermore,flooding stage decreased the content of DTPA-Cd in bulk soil,and that tended to distribute in microaggregates(0.30 and 0.52 mg/kg for the>2 and<0.053 mm fraction,respectively).Taken together,unstable pe+pH changed the distribution of Fe oxides and SOC in different aggregate size,resulting in aggregate restructuring,which further impacted Cd distribution in paddy soil. 展开更多
关键词 pe+pH Aggregate restructuring Iron oxides,SOC Paddy soil
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Experimental and Numerical Optimization of Prestressed Anchor Cable Support for In-Situ Large-Span Tunnel Expansion with an Energy Balance Framework 认领 引用
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作者 Ying Zhu Minghui Hu +5 位作者 Shengxu Wang Xiaoliang Dong Xuewen Xiao Richeng Liu Meng Wang Zheng Yuan 《Computer Modeling in Engineering & Sciences》 SCIE EI 2026年第2期550-585,共36页
In-situ enlargement of super-large-span tunnels can intensify excavation-induced unloading in the surrounding rock,increasing deformation demand and failure risk during construction.This study combines laboratory mode... In-situ enlargement of super-large-span tunnels can intensify excavation-induced unloading in the surrounding rock,increasing deformation demand and failure risk during construction.This study combines laboratory model tests with FLAC3D simulations to evaluate the stabilizing role of prestressed anchor cables and to establish an energy-balance framework for support optimization.Comparative model tests of existing and enlarged tunnel sections,with and without anchors,show that reinforcement increases load-carrying capacity,reduces displacement,and confines damage to more localized zones.The numerical simulations reproduce displacement fields,shear-strain localization,and plastic-zone evolution with good agreement against the experimental observations.The energy framework is implemented in the in-situ simulations by quantifying unloading-related energy release in the rock mass and reinforcement work contributed by the anchors,and by introducing an energy release–reinforcement ratio as a stability indicator.Parametric analyses indicate that anchor length,spacing,and prestress influence stability in a nonlinear manner,with diminishing returns once reinforcement extends beyond the mechanically dominant deformation zone.An efficient parameter window is identified that improves deformation and yielding control while avoiding unnecessary reinforcement.The results provide an energy-consistent and design-oriented basis for prestressed anchorage selection in large-span tunnel expansion. 展开更多
关键词 Large-span tunnel anchor cable support tunnel expansion energy balance FLAC3D parameter optimization
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Single-reference Bρ-defined isochronous mass spectrometry for mass measurements of exotic nuclei 认领 引用
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作者 Yin-Fang Luo Jia-Hao Lv +5 位作者 Yuan-Ming Xing Min Zhang Yu-Hu Zhang Meng Wang Yury ALitvinov Xiao-Hong Zhou 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第6期125-132,共8页
Bρ-defined isochronous mass spectrometry(Bρ-IMS),established at a storage ring,is a valuable tool for determining the masses of short-lived nuclei.In previous Bρ-IMS experiments,the effects of magnetic field drifts... Bρ-defined isochronous mass spectrometry(Bρ-IMS),established at a storage ring,is a valuable tool for determining the masses of short-lived nuclei.In previous Bρ-IMS experiments,the effects of magnetic field drifts had to be corrected to improve the mass resolving power of Bρ-IMS[Eur.Phys.J.A 59,27(2023)].The correction procedures are complicated and require multiple reference ions with well-known masses in each injection,which may not be the case in the measurements of exotic nuclei with tiny production yields.In this study,we propose a novel approach to Bρ-IMS that requires only single reference ion for mass determination in an individual injection,avoiding tedious and complicated correction procedures.This approach achieves mass precision comparable to that of previous Bρ-IMS results and is proven to be suitable for future mass measurements of exotic nuclei with extremely low production yields. 展开更多
关键词 Storage ring Bρ-defined isochronous mass spectrometry Double time-of-flight(TOF)detectors Nucleus mass measurement
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Defoliation accelerates the depletion of non-structural carbohydrates in Chinese pine under drought conditions 认领 引用
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作者 Tong Li Qingqing Fan +5 位作者 Xinyi Guo Ziying Zou Meng Wang Xiaolu Zhou Peng Li Changhui Peng 《Ecological Frontiers》 CSCD 2026年第1期188-196,共9页
Drought has the potential to induce extensive defoliation in forest trees.However,the responses of non-structural carbohydrates(NSCs,including soluble sugar and starch)to the combined effects of drought and defoliatio... Drought has the potential to induce extensive defoliation in forest trees.However,the responses of non-structural carbohydrates(NSCs,including soluble sugar and starch)to the combined effects of drought and defoliation remain to be elucidated,particularly in pine trees.In this study,we investigated the interactive effects of drought and defoliation on the contents of NSCs in five organs(new and old needles,twigs,stems,as well as roots)of Chinese pine(Pinus tabuliformis)seedlings.We sampled two batches of the seedlings at 30 and 50 days,respectively.Our results showed that Chinese pine could tolerate mild drought,but severe drought significantly decreased the content of soluble sugars in all organs.Defoliation initially suppressed the photosynthetic rate and significantly reduced the soluble sugar content in all organs.However,after 50 days,this effect was substantially mitigated by the new needle growth.Starch content in twigs,stems,and roots was found to be more vulnerable to defoliation than to drought.A significant interactive effect existed between drought and defoliation on NSCs,with defoliation exacerbating the negative impact of drought on the accumulation of NSCs,especially in new needles and roots.These findings highlight the complex effects of defoliation on NSCs during drought,underscoring critical implications for the management and economic value of Chinese pine forests. 展开更多
关键词 Soluble sugar Starch Coniferous tree Interaction Allocation Photosynthesis
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