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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 369-379页

作者： Mei Zhang Wenhao li Yangfei chen Yang Jiang Xiaofei Guo Han Dong School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai 200444China

The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile ***-situ observations under scanning electron microscopy,transmission electron microscopy,and X-ray diffraction analysis were conducted to characterize the progressive transformation-induced plasticity process and associated fracture initiation *** findings were discussed with the local strain measurements via digital image *** results indicated that Lüders band formation in the steel was limited to 1.5%strain,which was mainly due to the early-stage martensitic phase transformation of a very small amount of the less stable large-sized retained austenite(RA),which led to localized stress concentrations and strain hardening and further retardation of *** small-sized RA exhibited high stability and progressively transformed into martensite and contributed to a stably extended Portevin-Le Chatelier *** volume fraction of RA gradually decreased from 26.8%to 8.2%prior to *** the late deformation stage,fracture initiation primarily occurred at the austenite/martensite and ferrite/martensite interfaces and the ferrite phase.

关键词： medium-Mn steel retained austenite progressive transformation-induced plasticity effect local strain fracture initiation

Unintentional emissions of polychlorinated naphthalenes in China:Sources,composition,and historical trends

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Journal of Environmental Sciences 2025年第2期148卷 221-229页

作者： Ye Huang lin Huang Ying li Nazupar Sidikjan Yunshan Zhang Yan chen Yangmin chen Ye li Wei Du Long chen YanWu Shanshan Zhang Jing Yang Wenjun Meng Guofeng Shen Min liu Shu Tao Key Laboratory of Geographic Information Science of the Ministry of Education School of Geographic SciencesEast China Normal UniversityShanghai 200241China Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control Faculty of Environmental Science&EngineeringKunming University of Science&TechnologyKunming 650500China Laboratory of Earth Surface Processes College of Urban and Environmental SciencePeking UniversityBeijing 100871China

Polychlorinated naphthalenes(PCNs)are detrimental to human health and the *** the commercial production of PCNs banned,unintentional releases have emerged as a significant environmental ***,relevant information is still *** this study,provincial emissions for eight PCNs homologues from 37 sources in the Chinese mainland during the period of 1960-2019 were estimated based on a source-specific and time-varying emission factor *** results showed that the total PCNs emissions in 2019 reached 757.0 kg with Hebei ranked at the top among all the provinces and iron&steel industry as the biggest ***-chlorinated PCNs comprised 90%of emissions by mass,while highly chlorinated PCNs dominated in terms of toxicity,highlighting divergent priorities for mitigating emissions and safeguarding human *** emissions showed an overall upward trend from 1960 to 2019 driven by emission increase from iron&steel industry in terms of source,and from North China and East China in terms of geographic ***-capita emissions followed an inverted U-shaped environmental Kuznets curvewhile emission intensities decreased with increasing per-capita Gross Domestic Product(GDP)following a nearly linear pattern when log-transformed.

关键词： PCNs Emission inventory Emission factor Composition profile Emission intensity Chinese mainland

Oscillatory flow reactor facilitates fast photochemical Wolff rearrangement toward synthesis of α-substituted amides in flow

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Chinese Chemical Letters 2025年第2期36卷 389-393页

作者： Huashan Huang Jingze chen Luyun Zhang Hong Yan Siqi li Fen-Er chen Institute of Pharmaceutical Science and Technology College of Chemistry Fuzhou University Key Laboratory of Natural Medicines of the Changbai Mountain Ministry of Education Molecular Medicine Research Center College of Pharmacy Yanbian University Engineering Center of Catalysis and Synthesis for Chiral Molecules Department of Chemistry Fudan University Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs

A visible light-promoted fast photochemical Wolff rearrangement was developed toward synthesis of α-substituted amides in continuous flow with the use of a photochemical oscillatory flow reactor(POFR).The control exp... 详细信息

关键词： Flow photochemistry Ketene Oscillatory flow reactor Wolff rearrangement α-Substituted amides

制度复杂性下的组织创新——以新型研发机构为例

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科学学与科学技术管理 2025年第1期46卷 185-198页

作者：李鑫陈玲中国兵器工业集团人才研究中心清华大学产业发展与环境治理研究中心

新型研发机构的体制机制创新在推动创新发展方面成效显著，但新型研发机构如何可持续发展是当前亟需关注的挑战。基于制度逻辑理论视角，分析了新型研发机构在制度复杂性下的创新机制。结果发现，新型研发机构通过构建制度逻辑、组织结... 详细信息

新型研发机构的体制机制创新在推动创新发展方面成效显著，但新型研发机构如何可持续发展是当前亟需关注的挑战。基于制度逻辑理论视角，分析了新型研发机构在制度复杂性下的创新机制。结果发现，新型研发机构通过构建制度逻辑、组织结构和运行机制上的二元性，提升了组织对复杂制度环境的适应能力，获得了多维度的合法性支撑。组织的具体策略包括双重组织结构、决策机制脱钩、组织业务耦合、组织发展聚合等。新型研发机构的二元性有利于科学与商业的深度融合，具有一定的成长性。

关键词：新型研发机构组织创新制度逻辑二元性

life cycle dynamic formation temperature response and thermal energy extraction of mine geothermal system considering groundwater flow

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International Journal of Mining Science and Technology 2025年第1期35卷 1-17页

作者： Xibing li Zhiying chen linqi Huang Botao li Jingyi Yan Peilei Zhang Zhixiang liu School of Resources and Safety Engineering Central South UniversityChangsha 410083China School of Safety Science and Engineering Henan Polytechnic UniversityJiaozuo 454003China

As mining activities expand deeper,deep high-temperature formations seriously threaten the future safe exploitation,while deep geothermal energy has great potential for *** the formation cooling and geothermal mining in mines to establish a thermos-hydraulic coupling numerical model for fractured *** study investigates the formation heat transfer behaviour,heat recovery performance and thermal economic benefits influenced during the life *** results show that the accumulation of cold energy during the cold storage phase induces a decline in formation *** heat recovery phase is determined by the extent of the initial cold domain,which contracts inward from the edge and decelerates the heat recovery rate *** groundwater velocity increases,the thermal regulation efficiency gradually increases,the production temperature decreases,while the effective radius and thermal power increase first and then *** injected volume and temperature significantly affect,with higher injection temperatures slowing thermal recovery,and the thermal regulation efficiency is more sensitive to changes in formation permeability and thermal *** heat extraction performance is positively correlated with all *** levelized cost of electricity is estimated at 0.1203$/(kW·h)during the cold *** the heat recovery,annual profit is primarily driven by cooling benefits.

关键词： Mine geothermal energy Formation heat transfer behavior Groundwater flow life cycle assessment Thermal economic analysis

Recent advances in bio-integrated electrochemical sensors for neuroengineering

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FUNDAMENTAL RESEARCH 2025年第1期5卷 29-47页

作者： chen, Shulin liu, Tzu-li Jia, Yizhen li, Jinghua Ohio State Univ Dept Mat Sci & Engn Columbus OH 43210 USA Ohio State Univ Chron Brain Injury Program Columbus OH 43210 USA

Detecting and diagnosing neurological diseases in modern healthcare presents substantial challenges that directly impact patient outcomes. The complex nature of these conditions demands precise and quantitative monitoring of disease-associated biomarkers in a continuous, real-time manner. Current chemical sensing strategies exhibit restricted clinical effectiveness due to labor-intensive laboratory analysis prerequisites, dependence on clinician expertise, and prolonged and recurrent interventions. Bio-integrated electronics for chemical sensing is an emerging, multidisciplinary field enabled by rapid advances in electrical engineering, biosensing, materials science, analytical chemistry, and biomedical engineering. This review presents an overview of recent progress in bio-integrated electrochemical sensors, with an emphasis on their relevance to neuroengineering and neuromodulation. It traverses vital neurological biomarkers and explores bio-recognition elements, sensing strategies, transducer designs, and wireless signal transmission methods. The integration of in vivo biochemical sensors is showcased through applications. The review concludes by outlining future trends and advancements in in vivo electrochemical sensing, and highlighting ongoing research and technological innovation, which aims to provide inspiring and practical instructions for future research.

关键词： Biochemical sensing Neuroengineering Bioimplants Analytical chemistry Bio-integrated electronics

Space weathering characteristics of lunar permanently shadowed regions soils:Evidence from experimental simulation

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Acta Geochimica 2025年第1期44卷 1-10页

作者： Zixuan Han Yang li chen li Ronghua Pang Sizhe Zhao Zhuang Guo Kairui Tai Rui li Zhenhao Hu li liu Center for Lunar and Planetary Sciences Institute of GeochemistryChinese Academy of SciencesGuiyangChina University of Chinese Academy of Sciences BeijingChina Center for Excellence in Comparative Planetology Chinese Academy of SciencesHefeiChina State Key Laboratory of Lunar and Planetary Sciences Macao University of Science and TechnologyMacaoChina NWU-HKU Joint Center of Earth and Planetary Sciences Department of GeologyNorthwest UniversityXi’anChina International Center for Planetary Science Chengdu University of TechnologyChengduChina Deep Space Exploration Lab BeijingChina

Permanently shadowed regions(PSRs)on the Moon are potential reservoirs for water ice,making them hot spots for future lunar *** water ice in PSRs would cause distinctive changes in space weathering there,in particular reduction-oxidation processes that diff er from those in illuminated *** determine the characteristics of products formed during space weathering in PSRs,the lunar meteorite NWA 10203 with artifi cially added water was irradiated with a nanosecond laser to simulate a micro-meteorite bombardment of lunar soil containing water *** TEM results of the water-incorporated sample showed distinct amorphous rims that exhibited irregular thickness,poor stratifi cation,the appearance of bubbles,and a reduced number of npFe^(0).Additionally,EELS analysis showed the presence of ferric iron at the rim of the nanophase metallic iron particles(npFe^(0))in the amorphous rim with the involvement of *** results suggest that water ice is another possible factor contributing to oxidation during micrometeorite bombardment on the lunar *** addition,it off ers a reference for a new space weathering model that incorporates water in PSRs,which could be widespread on asteroids with volatiles.

关键词： Space weathering Permanently shadowed regions The Moon laser irradiation Water ice

Discovering Climate Change during the Early 21st Century via Wasserstein Stability Analysis

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Advances in Atmospheric Sciences 2025年第2期42卷 373-381页

作者： Zhiang XIE Dongwei chen Puxi li Department of Earth and Space Sciences Southern University of Science and TechnologyShenzhen 518055GuangdongChina School of Mathematical and Statistical Sciences Clemson UniversityClemson 29634SCUSA State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing 100081China

Climate change is an essential topic in climate science,and the accessibility of accurate,high-resolution datasets in recent years has facilitated the extraction of more insights from big-data ***,current research predominantly focuses on mean-value changes and largely overlooks changes in the probability *** this study,a novel method called Wasserstein Stability Analysis(WSA)is developed to identify probability density function(PDF)changes,especially the extreme event shift and nonlinear physical value constraint variation in climate *** is applied to the early 21st century and compared with traditional mean-value trend *** results indicate that despite no significant trend,the equatorial eastern Pacific experienced a decline in hot extremes and an increase in cold extremes,indicating a La Nina-like temperature *** analysis at two Arctic locations suggests sea ice severely restricts the hot extremes of surface air *** impact is diminishing as the sea ice *** revealing PDF shifts,WSA emerges as a powerful tool to re-examine climate change dynamics,providing enhanced data-driven insights for understanding climate evolution.

关键词： climate change probability density function extremes Wasserstein distance

Investigations of inelastic cross sections of H_(2)O molecule by He^(2+) and C^(6+) projectiles with energy range around the Bragg peak

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Nuclear Science and Techniques 2025年第2期36卷 141-154页

作者： Guo-Zhuang li cheng-Ye Sun Rui cheng Yan-Shi Zhang liang-Wen chen Sheng Zhang xin-Xia li Lei Yang School of Nuclear Science and Technology University of South ChinaHengyang 421001China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Interdisciplinary Center for Fundamental and Frontier Sciences Nanjing University of Science and TechnologyJiangyin 214443China Center for Basic Teaching and Experiment Nanjing University of Science and TechnologyJiangyin 214443China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

Inelastic collisions are the dominant cause of energy loss in *** the energy range around the Bragg peak,single ionization(SI)and single-electron capture(SC)are the primary inelastic collisions that lead to energy *** study employs the classical trajectory Monte Carlo method to study the SI and SC processes of H_(2)O molecules using He^(2+) and C^(6+) projectiles in the energy range of 10 keV/u to 10 MeV/*** total cross sections,single differential cross sections,impact parameter dependence of SI and SC,and fragmentation cross sections were *** illustrate that the cross section for SI is the highest when the projectile energy is close to the Bragg peak *** the projectile energy is below the Bragg peak energy,the ionized electrons in the forward direction dominate,and the removal of electrons can be associated with large impact *** the projectile energy increases,the emission angle of the electrons gradually transitions from small angles(60°~120°)to large angles(60°~120°),and the removal of electrons is associated with small impact *** energy distributions of the ionized electron are similar when the projectile energy is equal to,below or above the Bragg peak *** fragmentation cross sections after SI and SC in the energy range around the Bragg peak were also estimated.

关键词： Classical trajectory Monte Carlo Heavy ion-water molecule collision Inelastic cross sections

Gentiopicroside Alleviates Atherosclerosis by Suppressing Reactive Oxygen Species-Dependent NLRP3 Inflammasome Activation in Vascular Endothelial Cells via SIRT1/Nrf2 Pathway

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Chinese Journal of Integrative Medicine 2025年第2期31卷 118-130页

作者： li Zhu-qing ZHANG Feng li Qi WANG li SUN Xiao-qiang li Chao YIN Xue-mei liU Chun-lei WANG Yan-xin DU Xiao-yu LU cheng-zhi Department of Cardiology Tianjin First Central HospitalTianjin300192China The First Central Clinical School Tianjin Medical UniversityTianjin300070China Department of Cardiology The First College of Clinical Medical ScienceChina Three Gorges University&Yichang Central People’s HospitalYichangHubei Province443003China School of Medicine Nankai UniversityTianjin300071China

Objective:To evaluate the protective effects of gentiopicroside(GPS)against reactive oxygen species(ROS)-induced NOD-like receptor family,pyrin domain containing 3(NLRP3)inflammasome activation in endothelial cells,aiming to reduce ***:Eight-week-old male ApoE-deficient mice were randomly divided into 2 groups(n=10 per group):the vehicle group and the GPS treatment *** groups were fed a high-fat diet for 16 ***(40 mg/kg per day)was administered by oral gavage to the GPS group,while the vehicle group received an equivalent volume of the vehicle *** the end of the treatment,blood and aortic tissues were collected for assessments of atherosclerosis,lipid profiles,oxidative stress,and molecular expressions related to NLRP3 inflammasome activation,ROS production,and ***,in vitro experiments on human aortic endothelial cells treated with oxidized low-density lipoprotein(ox-LDL)were conducted to evaluate the effects of GPS on NLRP3 inflammasome activation,pyroptosis,apoptosis,and ROS production,specifically examining the role of the sirtuin 1(SIRT1)/nuclear factor erythroid 2-related factor 2(Nrf2)***1 and Nrf2 inhibitors were used to confirm the pathway's ***:GPS treatment significantly reduced atherosclerotic lesions in the en face aorta(Plike protein containing a CARD,cleaved-caspase-1,and cleavedgasdermin D expressions(all P<0.01).GPS also decreased ROS production,apoptosis,and pyroptosis,with the beneficial effects being significantly reversed by SIRT1 or Nrf2 ***:GPS exe

关键词： endothelial dysfunction gentiopicroside NLRP3 inflammasome SIRT1 nuclear factor erythroid 2-related factor 2 Chinese medicine