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Sequential phase transformations in Ta0.4Ti2Zr alloy via tensile molecular dynamics simulations with deep potential 认领 引用 被引量：1
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作者 Hongyang Liu Rong Chen +3 位作者 Bo Chen Jingzhi He Dongdong Kang Jiayu Dai 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第1期46-55,共10页
Understanding the complex deformation mechanisms of non-equimolar multi-principal element alloys(MPEAs)requires high-fidelity atomic-scale simulations.This study develops a deep potential(DP)model to enable molecular ... Understanding the complex deformation mechanisms of non-equimolar multi-principal element alloys(MPEAs)requires high-fidelity atomic-scale simulations.This study develops a deep potential(DP)model to enable molecular dynamics simulations of the Ta0.4Ti2Zr(Ta0.4)alloy.Monte Carlo simulations using this potential reveal Ta atom precipitation in the Ta0.4alloy.Under uniaxial tensile loading along the[100]direction in the NPT ensemble,the alloy undergoes a remarkable sequence of phase transformations:an initial body-centered cubic(BCC1)to face-centered cubic(FCC)transformation,followed by a reverse transformation from FCC to a distinct BCC phase(BCC2),and finally a BCC2 to hexagonal close-packed(HCP)transformation.Critically,the reverse FCC to BCC2 transformation induces significant volume contraction.We demonstrate that the inversely transformed BCC2 phase primarily accommodates compressive stress.Concurrently,the reorientation of BCC2 crystals contributes substantially to the observed high strain hardening.These simulations provide atomic-scale insights into the dynamic structural evolution,sequential phase transformations,and stress partitioning during deformation of the Ta0.4alloy.The developed DP model and the revealed mechanisms offer fundamental theoretical guidance for accelerating the design of high-performance MPEAs. 展开更多
关键词 multi-principal element alloys machine-learning potential phase transformation stress partitioning
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Directional effects of blast waves on human thorax:Dynamic response and injury mechanisms 认领 引用
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作者 Meng Zhou Minzu Liang +4 位作者 Yuliang Lin Jiaqiang Wu Zizhen Qi Yuwu Zhang Rong Chen 《Defence Technology（防务技术）》 SCIE EI CAS CSCD 2026年第7期173-185,共13页
Blast injury is a leading cause of military casualties,and the thorax,which houses the lungs and heart,is particularly vulnerable to blast waves.While previous studies have primarily examined anterior ex-posures,the m... Blast injury is a leading cause of military casualties,and the thorax,which houses the lungs and heart,is particularly vulnerable to blast waves.While previous studies have primarily examined anterior ex-posures,the mechanisms of thoracic response and organ injury under multi-directional blasts remain poorly understood.In this study,a validated human finite element model was employed to investigate the effects of blast wave incident direction on thoracic injury.Results indicate that interaction between blast and the thorax consistently involves reflection,diffraction,and convergence,with pressures on the loaded side dominating the overall response.Strong direction-dependent effects were observed in pressure transmission and energy distribution:under anterior loading,the heart experienced pressure amplitudes 4.2 times higher than the lungs due to density contrasts;under posterior loading,organ energy absorption decreased to 5.39%owing to chest wall constraints;and under lateral loading,impedance mismatch of the heart attenuated contralateral lung pressures by more than 90%.Lung in-juries were concentrated in the inferior lobes due to weak constraints of the lower thoracic cage,while asymmetry between left and right lung damage was attributed to organ arrangement and cage defor-mation.These findings elucidate the directional dependence of thoracic blast injury mechanisms,of-fering new insights for injury assessment and the design of protective equipment. 展开更多
关键词 Blast injury Dynamic response Human thorax Directional dependence
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3D-Printed Porous High-Entropy Alloy Boosts Peroxymonosulfate Activation for Long-Term Organic Pollutant Degradation 认领 引用
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作者 Sheng Guo Mengmeng Yang +7 位作者 Xizi Gao Yao Huang Yushan Huang Liming You Changjun Han Chao Cai Fengxi Chen Rong Chen 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期355-367,共13页
High-entropy alloys(HEAs)have attracted considerable interest from researchers owing to their tunable chemical compositions,exceptional structural stability,and promising catalytic properties.However,their large-scale... High-entropy alloys(HEAs)have attracted considerable interest from researchers owing to their tunable chemical compositions,exceptional structural stability,and promising catalytic properties.However,their large-scale application is often hindered by complex manufacturing techniques and poor durability.Herein,we report a simple and cost-effective threedimensional(3D)printing strategy to fabricate a 3D-FeMnCrCo HEA catalyst with precisely controlled composition,structure,and porosity.The as-prepared 3D-FeMnCrCo catalyst exhibits high printing accuracy,excellent compression resistance,and remarkable efficiency in degrading organic contaminants using peroxymonosulfate(PMS)activation.Notably,the catalyst maintains outstanding catalytic stability over 100 consecutive cycles,which outperforms most of its powdered counterparts.Theoretical calculations and controlled experiments reveal that a synergistic combination of Fe/Mn electron donation,Comediated charge buffering,and Cr-driven orbital hybridization lowers the electron transfer energy barrier,thereby enhancing PMS activation.Mechanistic studies further show that singlet oxygen is the predominant reactive species in the 3DFeMnCrCo/PMS system.The biotoxicity of degraded pollutants and the catalyst's performance in treating actual wastewater are also systematically evaluated.This work provides critical insights into the practical application of HEAs in water treatment and guides the design of efficient,stable,and easily recoverable catalysts for environmental remediation. 展开更多
关键词 3D printing advanced oxidation process high-entropy alloy peroxymonosulfate water treatment
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Li-SOCl2 batteries:Current status,practical challenges,and future perspectives 认领 引用
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作者 Hui Li Dongbo Zhang +4 位作者 Huayi Qian Rong Chen Yuliang Cao Xinping Ai Jiliang Wu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第2期365-401,I0009,共37页
As a high-energy-density primary battery,the Li-SOCl2 battery offers significant advantages over other primary systems,including a high operating voltage,wide temperature tolerance,and low self-discharge rate.Howev... As a high-energy-density primary battery,the Li-SOCl2 battery offers significant advantages over other primary systems,including a high operating voltage,wide temperature tolerance,and low self-discharge rate.However,owing to the irreversible electrochemical reaction mechanism,despite its energy density of up to 700 Wh kg-1 at the cell level,this battery system has remained confined to the category of primary batteries,thereby limiting its use in cyclic applications.Recent advances in electrochemical technologies have enabled the reversible redox chemistry of Li-SOCl2 batteries,transforming them into rechargeable systems.This article provides a systematic overview of the technical evolution,reaction mechanisms,safety constraints,engineering countermeasures,and electrochemical performance enhancement of Li-SOCl2 primary batteries since their introduction.First,the modification methods for the lithium anode,carbon cathode,electrolyte,and electrocatalyst in Li-SOCl2 primary batteries are discussed,along with their mechanisms for improving electrochemical performance.We then review the SOCl2-based rechargeable Li metal batteries(LMBs)that evolved from the Li-SOCl2 primary batteries.With their higher energy density,these systems have become promising candidates to replace traditional Li-ion batteries(LIBs).This review focuses on the construction of key components,such as the positive electrode carrier,novel alloy anode,and electrolyte,as well as their impact on electrochemical performance in rechargeable batteries.Finally,we summarize current research progress and propose future directions for SOCl2-based LMBs aimed at enhancing overall electrochemical performance.These insights provide a theoretical foundation for the development of next-generation high-energy-density energy-storage technologies. 展开更多
关键词 Li-SOCl2batteries Lithium primary batteries Lithium metal batteries New rechargeable lithium batteries Li-Cl2batteries
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Machine learning driven impact fracture understanding and end-to-end design of energetic multi-principal-element alloys 认领 引用 被引量：1
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作者 Longhui Zhang Zhouran Zhang +6 位作者 Yiming Zhang Lihe Chen Shun Li Li'an Zhu Yicong Ye Rong Chen Shuxin Bai 《Defence Technology（防务技术）》 SCIE EI CAS CSCD 2026年第5期217-230,共14页
Energetic multi-principal-element alloys(EMPEAs)have garnered considerable attention for their reactive characteristics and compositional flexibility in pyrotechnic applications.However,the complex fragmentation behav... Energetic multi-principal-element alloys(EMPEAs)have garnered considerable attention for their reactive characteristics and compositional flexibility in pyrotechnic applications.However,the complex fragmentation behavior under impact loading presents challenges for optimal design.This study established a machine learning framework to predict the mean particle size(MPS)of EMPEAs under ballistic impact conditions and achieve end-to-end material design.Using ballistic gun experiment data from 110 EMPEA samples,multi-stage feature dimensionality reduction through Pearson correlation analysis and genetic algorithm identified five key predictors from 28 initial material descriptors.Among six evaluated algorithms,the AdaBoost model demonstrated optimal performance(R2=0.851).Model interpretability analysis revealed that atomic radius mismatch(ΔR),mixing entropy(ΔSmix),thermodynamic parameter(ATE),bulk modulus mismatch(ΔK),and impact velocity(v),all exhibit negative correlations with MPS,withΔR identified as the most critical factor.Symbolic regression confirmedΔR's exponential negative relationship with MPS.Ti15Zr50Ta35 EMPEA was designed and experimentally validated,achieving a quasi-static overpressure of 0.22 MPa at 1300 m/s impact velocity with sizedependent oxidation behavior in fragments,outperforming most existing energetic structural alloys.This work demonstrates the effectiveness of machine learning in understanding impact fragmentation mechanisms and facilitating the design of high-performance EMPEAs with enhanced energy release characteristics. 展开更多
关键词 Energetic multi-principal-element alloys Machine learning Ballistic impact Genetic algorithm Symbolic regression
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2D-MOF/2D-MOF heterojunctions with strong hetero-interface interaction for enhanced photocatalytic hydrogen evolution 认领 引用 被引量：14
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作者 Yan Ma Hui-Xue Fang +4 位作者 Rong Chen Qian Chen Sheng-Jun Liu Kui Zhang Hai-Jin Li 《Rare Metals》 SCIE EI CAS CSCD 2023年第12期3993-4004,共12页
Metal organic framework(MOF) shows great potential in the research field of photocatalysis,and it is a big challenge to achieve efficient photocatalytic activity.In this work,we have successfully grown two-dimensional... Metal organic framework(MOF) shows great potential in the research field of photocatalysis,and it is a big challenge to achieve efficient photocatalytic activity.In this work,we have successfully grown two-dimensional MOF(2D-MOF) nanosheets on 2D-MOF nanosheets for the first time using a homometallic nodal strategy,and successfully prepared ultrathin nanosheets with tightly bound 2D/2D heterojunctions.2D Ni-BDC nanosheets were used as carriers to grow 2D Ni-TCPP nanosheets on top of them.Ni-TCPP has a high light absorption capacity,thus extending the light absorption range of 2D/2D heterojunctions.The tight coupling of the heterojunction effectively shortens the electron transfer distance,promotes the separation of interracial charges,and improves the photocatalytic activity.Particularly,Ni-BDC/Ni-TCPP-3can achieve to a hydrogen production rate of428.0 μmol·g-1,approximately 5.75 times higher than NiBDC and 5.24 times higher than Ni-TCPP,respectively.Thus,2D-MOF/2D-MOF heterojunctions provide a promising strategy for enhancing photocatalytic performance through rational heterostructure design with homometallic node strategy. 展开更多
关键词 Two-dimensional metal organic framework(2D MOF) Homometallic node strategy Heterojunction Photocatalytic
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Mechanism of Wettability–Rough Morphology Coupling on Convective Heat Transfer in Nanochannels 认领 引用
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作者 Yanfeng Li Xiaohui Zhang +2 位作者 Luyang Chen Rong Chen Shan Qing 《Frontiers in Heat and Mass Transfer》 EI CAS 2026年第3期123-140,共18页
Highly integrated micro-nano electronic devices suffer from severe heat dissipation challenges,and flow cooling in nanochannels is an effective solution.During convective heat transfer at liquid-solid interfaces,surfa... Highly integrated micro-nano electronic devices suffer from severe heat dissipation challenges,and flow cooling in nanochannels is an effective solution.During convective heat transfer at liquid-solid interfaces,surface wettability and rough morphology are key parameters governing thermal transport;however,their combined effects remain unclear.In this study,molecular dynamics simulations are utilized to examine the synergistic effects of surface wettability and nanopillar arrays on thermal transport and fluid dynamics within nanochannels.The results show that increasing surface hydrophilicity and roughness reduces the thermal slip length and increases the Nusselt number,thereby enhancing heat transfer performance in the nanochannel.From a fluid dynamics standpoint,velocity slip length decreases while the relative friction coefficient increases,signifying greater flow resistance.For the present model,the enhancement in heat transfer induced by increased wettability is significantly greater than that caused by increased roughness,whereas their effects on flow resistance are difficult to distinguish the dominance.At the microscale,increased wettability and roughness facilitate the accumulation of fluid atoms near the liquid-solid interface.The elevated interaction energy between solid platinum atoms and fluid argon atoms is identified as the primary mechanism underlying thermal transport enhancement in nanochannels.This investigation offers valuable insights for the optimized thermal management of micro-nano electronic devices. 展开更多
关键词 Nanochannel nanopillar arrays heat transfer flow resistance molecular dynamics
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LLM-Empowered Sensor Data Analytics and Interactive Digital Twin for Building Facility Management 认领 引用
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作者 Tianlun Yang Rong Chen +2 位作者 Haojie Tan Georgios Kapogiannis Byung-Gyoo Kang 《Journal of Electronic Research and Application》 2026年第2期91-98,共8页
This study proposes an LLM-empowered edge-cloud digital twin architecture for intelligent FM.Edge servers acquire and pre-process sensor data,with Flask-based cloud middleware aggregating into hybrid data storage.The ... This study proposes an LLM-empowered edge-cloud digital twin architecture for intelligent FM.Edge servers acquire and pre-process sensor data,with Flask-based cloud middleware aggregating into hybrid data storage.The LLM performs semantic reasoning to generate operational decisions,relaying insights in real time to a Unity-engineered 3D visualization environment.BIM semantic parsing segregates geometric from non-graphical attributes,integrating multi-source data at room-floor granularity to establish a“perception-analysis-decision-execution”closed loop,thereby enhancing situational awareness and decision support for facility managers. 展开更多
关键词 Digital twin LLM Facility management
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Influence of ordering behaviors on thermodynamic and mechanical properties of FCC_CoNiV multi-principal element alloys 认领 引用 被引量：1
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作者 Chu-bo ZHANG Cheng QIAN +10 位作者 Zi-an YE Pan-hong ZHAO Rong CHEN Bo WU Yang QIAO Liang-ji WENG Long-ju SU Tian-liang XIE Bai-sheng SA Yu LIU Chun-xu WANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2025年第7期2320-2331,共12页
In order to understand the influence of ordering behaviors on the thermodynamic and mechanical properties of multi-principal element alloys(MPEAs),the temperature-dependent thermodynamic properties and mechanical prop... In order to understand the influence of ordering behaviors on the thermodynamic and mechanical properties of multi-principal element alloys(MPEAs),the temperature-dependent thermodynamic properties and mechanical properties of FCC_CoNiV MPEAs were comparatively predicted,where the alloys were modeled as the ordered configurations based on our previously predicted site occupying fractions(SOFs),as well as disordered configuration based on traditional special quasi-random structure(SQS).The ordering behavior not only improves the thermodynamic stability of the structure,but also increases the elastic properties and Vickers hardness.For example,at 973 K,the predicted bulk modulus(B),shear modulus(G),Young’s modulus(E),and Vickers hardness(HV)of FCC_CoNiV MPEA based on SOFs configuration are 187.82,79.03,207.93,and 7.58 GPa,respectively,while the corresponded data are 172.58,57.45,155.14,and 4.64 GPa for the SQS configuration,respectively.The Vickers hardness predicted based on SOFs agrees considerably well with the available experimental data,while it is underestimated obviously based on SQS. 展开更多
关键词 FCC_CoNiV multi-principal element alloys(MPEAs) ordering behavior temperature-dependent properties computational materials science
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Deciphering the influence of gut and oral microbiomes on menopause for healthy aging 认领 引用
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作者 Shuting Yu Feiling Huang +8 位作者 Yixuan Huang Fangxu Yan Yi Li Shenglong Xu Yan Zhao Xinlei Zhang Rong Chen Xingming Chen Peng Zhang 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2025年第5期601-614,共14页
Menopause is characterized by the cessation of menstruation and a decline in reproductive function,which is an intrinsic component of the aging process.However,it has been a frequently overlooked field of women’s hea... Menopause is characterized by the cessation of menstruation and a decline in reproductive function,which is an intrinsic component of the aging process.However,it has been a frequently overlooked field of women’s health.The oral and gut microbiota,constituting the largest ecosystem within the human body,are important for maintaining human health and notably contribute to the healthy aging of menopausal women.Therefore,a comprehensive review elucidating the impact of the gut and oral microbiota on menopause for healthy aging is of paramount importance.This paper presents the current understanding of the microbiome during menopause,with a particular focus on alterations in the oral and gut microbiota.Our study elucidates the complex interplay between the microbiome and sex hormone levels,explores microbial crosstalk dynamics,and investigates the associations between the microbiome and diseases linked to menopause.Additionally,this review explores the potential of microbiome-targeting therapies for managing menopause-related diseases.Given that menopause can last for approximately 30 years,gaining insights into how the microbiome and menopause interact could pave the way for innovative interventions,which may result in symptomatic relief from menopause and an increase in quality of life in women. 展开更多
关键词 Menopause Estrogen Oral microbiome Gut microbiome Microbiome-targeting therapies
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Vat photopolymerization 3D printing of Al2O3 ceramic cores with TPMS micro lattice structure 认领 引用
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作者 Xiao-fei Zhai Jing-yi Chen +4 位作者 Xue-qin Zhang Yuan-hong Qian Rong Chen Wei Zhang Ru-jie He 《China Foundry》 SCIE EI CAS CSCD 2025年第5期565-573,共9页
The complex ceramic core used for hollow turbine blades requires a high porosity and a high fiexural strength. For a better balance between porosity and fiexural strength, ceramic materials with porous structures are ... The complex ceramic core used for hollow turbine blades requires a high porosity and a high fiexural strength. For a better balance between porosity and fiexural strength, ceramic materials with porous structures are preferred. In order to achieve the transition from disordered pore formation to ordered pore formation, Al2O3 ceramic cores with triply periodic minimal surface(TPMS) micro lattice structures with different structural configurations(gyroid, diamond, and neovius) and different volume fractions of lattice structures(30, 40, and 50, vol.%) were designed and prepared by vat photopolymerization 3D printing. The effects of structural configuration and volume fraction of the lattice structure on the following structural shrinkage, microstructure, and flexural strength were investigated. The shrinkage relationship of the three lattice configurations is: neovius>diamond>gyroid. Besides, it is found that with an increase in the volume fraction of the 3D printed Al2O3 ceramic micro lattice structures, their fiexural strength correspondingly increases ranging from 54.95 MPa to 139.1 MPa. The maximum average fiexural strength of the 3D printed Al2O3 ceramic micro lattice structures is obtained when the structural configuration is diamond and with a volume fraction of 50vol.%, which is 139.1 MPa. Even when the volume fraction of the lattice structure is 30vol.%, that is to say the porosity is 70%, the fiexural strength is as high as 50-70 MPa, which can still be maintained at a high level. In addition, when the volume fraction of the lattice structure is a certain value, the sample with diamond configuration has a higher strength. The internal pore morphology, pore size, and porosity of the cores are precisely controlled, achieving both a high porosity and a high strength. Therefore, this study maintains high porosity and high strength simultaneously, providing a new lattice structure design idea for 3D printed ceramic cores. 展开更多
关键词 alumina ceramic cores vat photopolymerization 3D printing micro lattice microstructure mechanical property
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High-entropy liquid electrolytes in rechargeable batteries:Merits and challenges 认领 引用
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作者 Mingcong Tang Xiaohong Zou +3 位作者 Lizhen Wu Gang Liu Rong Chen Liang An 《Materials Reports(Energy)》 EI 2025年第4期1-10,共10页
The growing severity of environmental challenges has accelerated advancements in renewable energy technologies,highlighting the critical need for efficient energy storage solutions.Rechargeable batteries,as primary sh... The growing severity of environmental challenges has accelerated advancements in renewable energy technologies,highlighting the critical need for efficient energy storage solutions.Rechargeable batteries,as primary short-term energy storage devices,have seen significant progress.Among emerging optimization strategies,high-entropy electrolytes have garnered attention for their superior ionic conductivity and ability to broaden batteries’operational temperature ranges.Rooted in the thermodynamic concept of entropy,high-entropy materials,originally exemplified by high-entropy alloys,have demonstrated enhanced structural stability and advanced electrochemical performance through the synergistic integration of multiple components.High-entropy liquid electrolytes,both aqueous and non-aqueous,offer unique opportunities for entropy manipulation due to their inherently disordered structures.However,their complex compositions present challenges,as minor changes in formulation can lead to significant performance variations.This review introduces the fundamentals of entropy tuning,surveys recent advances in high-entropy liquid electrolytes,and analyzes the interplay between entropy and electrochemical behavior.Finally,it discusses design strategies and future perspectives for the practical implementation of high-entropy liquid electrolytes in next-generation energy storage systems. 展开更多
关键词 Rechargeable batteries High-entropy materials Electrolyte engineering Energy storage
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Multifunctional Interface Engineering of Li13Si4Pre-Lithiation Additives With Superior Environmental Stability for High-Energy-Density Lithium-Ion Batteries 认领 引用
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作者 Yinan Liu Yun Zheng +18 位作者 Kunye Yan Jun Wang Yunxian Qian Junpo Guo Qi Zhang Congcong Zhang Pingshan Jia Zhiyuan Zhang Shengyang Dong Jiangmin Jiang Yan Guo Rong Chen Yike Huang Yingying Shen Jincheng Xu Ruifeng Zheng Yuxin Tang Wei Jiang Huaiyu Shao 《Carbon Energy》 SCIE EI CSCD 2025年第9期98-113,共16页
Considering the growing pre-lithiation demand for high-performance Si-based anodes and consequent additional costs caused by the strict pre-lithiation environment,developing effective and environmentally stable pre-li... Considering the growing pre-lithiation demand for high-performance Si-based anodes and consequent additional costs caused by the strict pre-lithiation environment,developing effective and environmentally stable pre-lithiation additives is a challenging research hotspot.Herein,interfacial engineered multifunctional Li13Si4@perfluoropolyether(PFPE)/LiF microanoparticles are proposed as anode pre-lithiation additives,successfully constructed with the hybrid interface on the surface of Li13Si4through PFPE-induced nucleophilic substitution.The synthesized multifunctional Li13Si4@PFPE/LiF realizes the integration of active Li compensation,long-term chemical structural stability in air,and solid electrolyte interface(SEI)optimization.In particular,the Li13Si4@PFPE/LiF with a high pre-lithiation capacity(1102.4 mAh g-1)is employed in the pre-lithiation Si-based anode,which exhibits a superior initial Coulombic efficiency of 102.6%.Additionally,in situ X-ray diffraction/Raman,density functional theory calculation,and finite element analysis jointly illustrate that PFPE-predominant hybrid interface with modulated abundant highly electronegative F atoms distribution reduces the water adsorption energy and oxidation kinetics of Li13Si4@PFPE/LiF,which delivers a high pre-lithiation capacity retention of 84.39%after exposure to extremely moist air(60%relative humidity).Intriguingly,a LiF-rich mechanically stable bilayer SEI is constructed on anodes through a pre-lithiation-driven regulation for the behavior of electrolyte decomposition.Benefitting from pre-lithiation via multifunctional Li13Si4@PFPE/LiF,the full cell and pouch cell assembled with pre-lithiated anodes operate with long-time stability of 86.5%capacity retention over 200 cycles and superior energy density of 549.9 Wh kg-1,respectively.The universal multifunctional pre-lithiation additives provide enlightenment on promoting large-scale applications of pre-lithiation on commercial high-energy-density and long-cycle-life lithium-ion batteries. 展开更多
关键词 interfacial functionalization lithium-silicon alloys multifunctional pre-lithiation additives Si-based anodes solid electrolyte interface
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Source and variability of formaldehyde in the Fenwei Plain:An integrated multi-source satellite and emission inventory study 认领 引用
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作者 Liang Li Keqin Duan +4 位作者 Yuyao Wu Junhua Yang Ting Yang Peihong Shi Rong Chen 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2025年第4期254-266,共13页
Formaldehyde(HCHO)is a high-yield product of the oxidation of volatile organic compounds(VOCs)released by anthropogenic activities,fires,and vegetations.Hence,we examined the spatiotemporal variation trends in HCHO co... Formaldehyde(HCHO)is a high-yield product of the oxidation of volatile organic compounds(VOCs)released by anthropogenic activities,fires,and vegetations.Hence,we examined the spatiotemporal variation trends in HCHO columns observed using the Ozone Monitoring Instrument(OMI)during 2005–2021 across the Fenwei Plain(FWP)and analysed the source and variability of HCHO using multi-source data,such as thermal anomalies.The spatial distribution of the annualmean HCHO in the FWP increased from northwest to southeast during 2005–2021,and the high-value aggregation areas contracted and gradually clustered,forming a belt-shaped distribution area from Xi’an to Baoji,north of the Qinling Mountains.The annual mean HCHO concentration generally showed a two-step increase over the 17 years.Fires showed a single-peak trend in March and a double-peak M-shaped trend in March and October,whereas urban thermal anomalies(UTAs)showed an inverted U-shaped trend over 17 years,with peaks occurring in May.The HCHO peaks are mainly caused by the alternating contributions of fires and UTAs.The fires and UTAs(predominantly industrial heat sources)played a role in controlling the background level of HCHO in the FWP.Precipitation and temperature were also important influencing variables for seasonal variations,and the influence of plant sources on HCHO concentrations had significant regional characteristics and contributions.In addition,the FWP has poor dispersion conditions and is an aggregated area for the long-range transport of air pollutants. 展开更多
关键词 OMI HCHO Urban thermal anomalies(UTAs) Fires Isoprene
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Subtitling Translation Research in China(2004-2024):A CiteSp 认领 引用
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作者 Xiaoqin Shi Rong Chen 《Journal of Contemporary Educational Research》 2025年第8期237-247,共11页
In recent years,subtitling has emerged as a prominent topic in the field of translation studies.This paper conducts a quantitative analysis of literature related to“subtitling”retrieved from the China National Knowl... In recent years,subtitling has emerged as a prominent topic in the field of translation studies.This paper conducts a quantitative analysis of literature related to“subtitling”retrieved from the China National Knowledge Infrastructure(CNKI),focusing on sources indexed in the CSSCI and Peking University Core Journals databases.Utilizing the bibliometric tool CiteSpace,the study reviews the research hotspots and developmental trends in Chinese subtitling studies over the past two decades.The findings reveal that,driven by the growth of the film and television industry,deepening cross-cultural communication,and continuous technological advancements,research in this field has gradually shifted from theoretical exploration to practical application.The focus has become increasingly refined,diversified,and intelligent,expanding into interdisciplinary and multimodal translation studies.The paper also discusses current limitations in the research and outlines future directions,offering targeted suggestions to provide valuable references for further studies and practical endeavors in this domain. 展开更多
关键词 Subtitling Research hotspots Development trends Visualization analysis
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Rosmarinic acid elicits neuroprotection in ischemic stroke via Nrf2 and heme oxygenase 1 signaling 认领 引用 被引量：15
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作者 Hai-Ying Cui Xiang-Jian Zhang +4 位作者 Yi Yang Cong Zhang Chun-Hua Zhu Jiang-Yong Miao Rong Chen 《Neural Regeneration Research》 SCIE CAS CSCD 2018年第12期2119-2128,共10页
Rosmarinic acid（RA） can elicit a neuroprotective effect against ischemic stroke, but the precise molecular mechanism remains poorly understood. In this study, an experimental ischemic stroke model was established in... Rosmarinic acid（RA） can elicit a neuroprotective effect against ischemic stroke, but the precise molecular mechanism remains poorly understood. In this study, an experimental ischemic stroke model was established in CD-1 mice（Beijing Vital River Laboratory Animal Technology, Beijing, China） by occluding the right middle cerebral artery for 1 hour and allowing reperfusion for 24 hours. After intraperitoneally injecting model mice with 10, 20, or 40 mg/kg RA, functional neurological deficits were evaluated using modified Longa scores. Subsequently, cerebral infarct volume was measured using TTC staining and ischemic brain tissue was examined for cell apoptosis with TUNEL staining. Superoxide dismutase activity and malondialdehyde levels were measured by spectrophometry. Expression of heme oxygenase-1（HO-1）, nuclear factor erythroid 2-related factor 2（Nrf2）, Bcl-2, Bax, Akt, and phospho-Ser473 Akt proteins in ischemic brain tissue was detected by western blot, while mRNA levels of Nrf2, HO-1, Bcl-2, and Bax were analyzed using real time quantitative PCR. In addition, HO-1 enzyme activity was measured spectrophotometrically. RA（20 and 40 mg/kg） greatly improved neurological function, reduced infarct volume, decreased cell apoptosis, upregulated Bcl-2 protein and mRNA expression, downregulated Bax protein and mRNA expression, increased HO-1 and Nrf2 protein and mRNA expression, increased superoxide dismutase activity, and decreased malondialdehyde levels in ischemic brain tissue of model mice. However, intraperitoneal injection of a HO-1 inhibitor（10 mg/kg zinc protoporphyrin IX） reversed the neuroprotective effects of RA on HO-1 enzyme activity and Bcl-2 and Bax protein expression. The PI3 K/Akt signaling pathway inhibitor LY294002（10 mM） inhibited Akt phosphorylation, as well as Nrf2 and HO-1 expression. Our findings suggest that RA has anti-oxidative and anti-apoptotic properties that protect against ischemic stroke by a mechanism involving upregulation of Nrf2 and HO-1 expression via the PI3 K/Akt signaling pathway. 展开更多
关键词 cerebral ischemiaeperfusion rosmarinic acid cellular apoptosis oxidative injury neuroprotection Bcl-2 Bax Nrf2 heme oxygenase 1 PI3K/Akt signal pathway neural regeneration
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Mesozoic–Cenozoic Volcanic Cycle and Volcanic Reservoirs in East China 认领 引用 被引量：17
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作者 Guangfu Xing Jianqing Li +4 位作者 Zheng Duan Mingxuan Cao Minggang Yu Pingli Chu Rong Chen 《Journal of Earth Science》 SCIE CAS CSCD 2021年第4期742-765,共24页
There are widespread Mesozoic–Cenozoic terrestrial volcanic activities in East China,and they produced favorable geologic factors for the volcanic reservoirs.To reveal the spatio-temporal evolution of regional volcan... There are widespread Mesozoic–Cenozoic terrestrial volcanic activities in East China,and they produced favorable geologic factors for the volcanic reservoirs.To reveal the spatio-temporal evolution of regional volcanisms and their tectonic setting,we subdivide Mesozoic–Cenozoic volcanic activities into 6 volcanic cycles(Ⅰ–Ⅵ),and summarize the temporal-spatial distribution,rock association and tectonic setting of each cycle.The Cycle I forms a post-orogenic intraplate bimodal volcanic association.The cyclesⅡandⅢinclude arc volcanic associations formed in compressional and extensional subduction environments,respectively.The CycleⅣcontains a post-orogenic arc bimodal association.The CycleⅤis a basaltic association of tholeiite series under initial rift setting,and the CycleⅥis basaltic association of alkaline series under typical rift setting.The volcanic strata between each cycle are bounded by regional unconformity.The above 6 volcanic cycles correspond to 6 sequential stages of tectonic evolutions from the Early Jurassic post-orogeny,the Mid-Jurassic–Cretaceous subduction of the paleo-Pacific Plate to the Cenozoic marginal rifting.According to the geological characteristics of volcanic reservoirs in different volcanic cycles,it is put forward that the CycleⅤis the major formation period of volcanic reservoirs in East China and should be the focus of exploration,and that the volcanic reservoirs of the CycleⅣare also worthy of attention. 展开更多
关键词 volcanic reservoir tectonic evolution volcanic cycle Mesozoic-Cenozoic East China
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Osthole decreases collagen Ⅰ/III contents and their ratio in TGF-β1-overexpressed mouse cardiac fibroblasts through regulating the TGF-β/Smad signaling pathway 认领 引用 被引量：12
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作者 LIU Jin-Cheng ZHOU Lei +2 位作者 WANG Feng CHENG Zong-Qi RONG Chen 《Chinese Journal of Natural Medicines》 SCIE CAS CSCD 2018年第5期321-329,共9页
The present study was designed to elucidate whether the mechanism by which osthole decreases collagenⅠ/III contents and their ratio is regulating the TGF-β/Smad signaling pathway in TGF-β1-overexpressed mouse cardi... The present study was designed to elucidate whether the mechanism by which osthole decreases collagenⅠ/III contents and their ratio is regulating the TGF-β/Smad signaling pathway in TGF-β1-overexpressed mouse cardiac fibroblasts(CFs). These CFs were cultured and treated with different concentrations of osthole. Our results showed that the TGF-β1 expression in the CFs transfected with that the recombinant expression plasmids pc DNA3.1(+)-TGF-β1 was significantly enhanced. After the CFs were treated with 1.25-5 μg·m L-1 of osthole for 24 h, the m RNA and protein expression levels of collagensⅠand III were reduced. The collagen Ⅰ/III ratio was also reduced. The m RNA and protein expression levels of TGF-β1, TβRⅠ, Smad2/3, P-Smad2/3, Smad4, and α-SMA were decreased, whereas the expression level of Smad7 was increased. These effects suggested that osthole could inhibit collagen Ⅰ and III expression and reduce their ratio via the TGF-β/Smad signaling pathway in TGF-β1 overexpressed CFs. These effects of osthole may play beneficial roles in the prevention and treatment of myocardial fibrosis. 展开更多
关键词 Osthole TGF-β1 Collagen Mouse cardiac fibroblasts
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Dynamic compression behavior of TiZrNbV refractory high-entropy alloys upon ultrahigh strain rate loading 认领 引用 被引量：12
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作者 Kerong Ren Hongyang Liu +7 位作者 Rong Ma Sen Chen Siyuan Zhang Ruixin Wang Rong Chen Yu Tang Shun Li Fangyun Lu 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第30期201-219,共19页
In this study,the dynamic compressive response behavior of a body-centered cubic(BCC)single-phase TiZrNbV refractory high-entropy alloy(RHEA)was investigated under impact at speeds of 313-1584 m s-1using two-stage,... In this study,the dynamic compressive response behavior of a body-centered cubic(BCC)single-phase TiZrNbV refractory high-entropy alloy(RHEA)was investigated under impact at speeds of 313-1584 m s-1using two-stage,gas-gun-driven,high-speed plate-impact experiments;recovery sample analysis;and theoretical calculations.The strain rate and pressure were approximately 107 s−1 and 5.07-29.37 GPa,respectively.The results showed that the TiZrNbV RHEA had a Hugoniot elastic limit of 4.12-5.86 GPa and a spall strength of 1.84-2.03 GPa.The initial yield strength of the alloy showed a strong strain-rate dependence and could be described by the modified Zerilli-Armstrong model,while the phonon-damping effect was the main reason for its high strain-rate sensitivity.Microstructural analysis showed that the dynamic deformation of the TiZrNbV RHEA was controlled by the dislocation slip,dislocation proliferation,intersection of the deformation bands,and grain refinement.The analysis also showed that the intergranular,transgranular,and mixed-type cracks dominated the spall failure of the material.The dynamic Hall-Petch effect and pinning from the lattice distortion led to high dynamic yield strength.The critical strain rate for the phonon drag effect was positively related to the relative atomic mass and local strain field of the metals.Within the experimental loading range,the RHEA showed good structural stability,and simultaneously,the theoretical calculation method for the equation of state based on a cold-energy mixture could accurately predict its shock-response behavior.The valence-electron concentration(VEC)had a direct effect on the shock-compression properties of the HEAs;higher VEC implied more difficulty in compressing the HEAs.The findings of this study provide insights into understanding the mechanical response characteristics of RHEAs under extreme conditions such as high-speed impact and ultrahigh strain-rate loading. 展开更多
关键词 Refractory high-entropy alloys Shock compression Spall Dynamic yield Equation of state Ultrahigh strain rate
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Independent and combined effects of environmental factors and miR-126, miR-143, and miR-145 on the risk of coronary heart disease 认领 引用 被引量：11
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作者 Da-Cen LIN Jia-Bing LIN +6 位作者 Zhou CHEN Rong CHEN Chun-Yu WAN Shao-Wei LIN Qi-Shuang RUAN Huang-Yuan LI Si-Ying WU 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2017年第11期688-695,共8页
Objective To evaluate the effects of environmental factors and microRNAs （miRNAs） （miR-126, miR-143, and miR-145） on the risk of coronary heart disease （CHD）. Methods A frequency-matched case-control study （450... Objective To evaluate the effects of environmental factors and microRNAs （miRNAs） （miR-126, miR-143, and miR-145） on the risk of coronary heart disease （CHD）. Methods A frequency-matched case-control study （450 patients, 450 controls） was conducted from April 2014 to December 2016 in Fuzhou City, China. Environmental factors were investigated using a self-administered questionnaire, and the expression levels of miR-126, rniR-143, and miR-145 were determined by quantitative real-time Polymerase Chain Reaction （PCR） in pe- ripheral blood mononuclear cells. Unconditional logistic regression models were used for statistical evaluation. Results Alcohol consumption, high-salt diets, high-intensity work, and lack of physical activity were significantly associated with increased CHD risk, whereas light diet was significantly associated with decreased risk. MiR-126, miR-143, and miR-145 were highly expressed in the CHD group compared with the control group. After adjustment for other environmental factors, unconditional logistic regression results revealed that miR-126, miR-143, and depression were the independent risk factors of CHD, and light diet was the independent protective factor of CHD. Conclusions Our data suggest that a family history of CHD, anxiety, and alcohol consumption was significantly associated with increased CHD risk, whereas light diet was significantly associated with decreased risk. Furthermore, miR-126 and miR-143 in combination with several risk factors, could play a joint role in the development of CHD. Therefore, it is necessary to manage patients with CHD in all directions and multiple level. 展开更多
关键词 Case-control study Coronary heart disease Environmental factors Gene-environment interaction MiR- 126 MiR- 143 MiR- 145
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