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Engineering highly‑exposed nickel nanoparticles within a nitrogen‑doped carbon matrix for efficient CO₂ electroreduction to CO 认领 引用
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作者 Can Yang Bingyuan Dai +5 位作者 Minxuan Wang Hui Xu Hongbing Zheng Cheng Ma Licheng Ling Jitong Wang 《ENGINEERING Chemical Engineering》 SCIE EI CAS CSCD 2026年第7期1-11,共11页
Ni single‑atom catalysts have been widely explored for CO₂ reduction,however,their practical application is often hampered by complex synthesis and instability at high current densities.In this context,well‑dispersed ... Ni single‑atom catalysts have been widely explored for CO₂ reduction,however,their practical application is often hampered by complex synthesis and instability at high current densities.In this context,well‑dispersed nickel nanoparticles present a compelling alternative,offering both facile fabrication and robust performance.Herein,a hierarchical catalyst comprising nickel nanoparticles encapsulated within a nitrogen‑doped carbon shell on a hollow‑rod carbon substrate(denoted as Ni_NP‑BCN@C)was designed.The hollow‑rod architecture maximizes the exposure of nickel nanoparticles as active sites,while the nitrogen‑doped carbon shell effectively modulates the electronic environment of the metallic Ni,suppressing the competing hydrogen evolution reaction and promoting CO₂ activation.The catalyst exhibits exceptional CO₂ ‑to‑CO conversion,with a Faradaic efficiency exceeding 90%at−0.83 V vs.RHE in an H‑cell and remarkable stability over 32 h.When evaluated in a flow‑cell configuration,it achieves a CO Faradaic efficiency>98%at a current density of 300 mA·cm⁻²,corresponding to a high turnover frequency of~93,579 h⁻¹.In situ Fourier transform infrared spectroscopy revealed intensified bands for key intermediates(*COOH and COO⁻),confirming enhanced CO₂ adsorption and activation.This work showcases a scalable and efficient catalyst design,highlighting the synergy between structural engineering and electronic modulation for advanced CO₂ electroreduction. 展开更多
关键词 Ni nanoparticles carbon shell CO₂ RR graphite carbon
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Biomaterial-based Flexible Stretchable Sensor Devices:Classification,Composition and Their Multifunctional Integrated Applications 认领 引用
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作者 Lu Wang Langyuan Cao +3 位作者 Jianhua Fan Junqiu Zhang Cheng Ma Zhiwu Han 《Journal of Bionic Engineering》 SCIE EI CSCD 2025年第1期12-46,共35页
Flexible sensors,a class of devices that can convert external mechanical or physical signals into changes in resistance,capacitance,or current,have developed rapidly since the concept was first proposed.Due to the spe... Flexible sensors,a class of devices that can convert external mechanical or physical signals into changes in resistance,capacitance,or current,have developed rapidly since the concept was first proposed.Due to the special properties and naturally occurring excellent microstructures of biomaterials,it can provide more desirable properties to flexible devices.This paper systematically discusses the commonly used biomaterials for bio-based flexible devices in current research applications and their deployment in preparing flexible sensors with different mechanisms.According to the characteristics of other properties and application requirements of biomaterials,the mechanisms of their functional group properties,special microstructures,and bonding interactions in the context of various sensing applications are presented in detail.The practical application scenarios of biomaterial-based flexible devices are highlighted,including human-computer interactions,energy harvesting,wound healing,and related biomedical applications.Finally,this paper also reviews in detail the limitations of biobased materials in the construction of flexible devices and presents challenges and trends in the development of biobased flexible sensors,as well as to better explore the properties of biomaterials to ensure functional synergy within the composite materials. 展开更多
关键词 Biomaterials Flexible devices Sensing properties Bonding of groups Electromechanical properties Structural properties
Streamlined photoacoustic image processing with foundation models:A training-free solution 认领 引用
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作者 Handi Deng Yucheng Zhou +5 位作者 Jiaxuan Xiang Liujie Gu Yan Luo Hai Feng Mingyuan Liu Cheng Ma 《Journal of Innovative Optical Health Sciences》 SCIE EI CSCD 2025年第1期55-65,共11页
Foundation models(FMs)have rapidly evolved and have achieved signicant accomplishments in computer vision tasks.Specically,the prompt mechanism conveniently allows users to integrate image prior information into the m... Foundation models(FMs)have rapidly evolved and have achieved signicant accomplishments in computer vision tasks.Specically,the prompt mechanism conveniently allows users to integrate image prior information into the model,making it possible to apply models without any training.Therefore,we proposed a workflow based on foundation models and zero training to solve the tasks of photoacoustic(PA)image processing.We employed the Segment Anything Model(SAM)by setting simple prompts and integrating the model's outputs with prior knowledge of the imaged objects to accomplish various tasks,including:(1)removing the skin signal in three-dimensional PA image rendering;(2)dual speed-of-sound reconstruction,and(3)segmentation ofnger blood vessels.Through these demonstrations,we have concluded that FMs can be directly applied in PA imaging without the requirement for network design and training.This potentially allows for a hands-on,convenient approach to achieving efficient and accurate segmentation of PA images.This paper serves as a comprehensive tutorial,facilitating the mastery of the technique through the provision of code and sample datasets. 展开更多
关键词 Foundation models photoacoustic imaging image segmentation large model
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Erratum:Biomaterial-based Flexible Stretchable Sensor Devices:Classification,Composition and Their Multifunctional Integrated Applications 认领 引用
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作者 Lu Wang Langyuan Cao +3 位作者 Jianhua Fan Junqiu Zhang Cheng Ma Zhiwu Han 《Journal of Bionic Engineering》 SCIE EI CSCD 2025年第1期418-418,共1页
The original online version of this article was revised:In this article,Jianhua Fan and Junqiu Zhang are both corresponding authors.In this article Junqiu Zhang should have been denoted as a corresponding author,as we... The original online version of this article was revised:In this article,Jianhua Fan and Junqiu Zhang are both corresponding authors.In this article Junqiu Zhang should have been denoted as a corresponding author,as well.The original article has been corrected. 展开更多
关键词 online revised Devices
Ab initio density functional theory approach to warm dense hydrogen:From density response to electronic correlations 认领 引用 被引量：1
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作者 Zhandos A.Moldabekov Xuecheng Shao +5 位作者 Hannah M.Bellenbaum Cheng Ma Wenhui Mi Sebastian Schwalbe Jan Vorberger Tobias Dornheim 《Matter and Radiation at Extremes》 SCIE EI CAS CSCD 2026年第2期14-20,共7页
Understanding the properties of warm dense hydrogen is of key importance for the modeling of compact astrophysical objects and to understand and further optimize inertial confinement fusion applications.The workhorse ... Understanding the properties of warm dense hydrogen is of key importance for the modeling of compact astrophysical objects and to understand and further optimize inertial confinement fusion applications.The workhorse of warm dense matter theory is thermal density functional theory(DFT),which,however,suffers from two limitations:(i)its accuracy can depend on the utilized exchange-correlation functional,which has to be approximated,and(ii)it is generally limited to single-electron properties such as the density distribution.Here,we present a new ansatz combining time-dependent DFT results for the dynamic structure factor See(q,ω)with static DFT results for the density response.This allows us to estimate the electron-electron static structure factor See(q)of warm dense hydrogen with high accuracy over a broad range of densities and temperatures.In addition to its value for the study of warm dense matter,our work opens up new avenues for the future study of electronic correlations exclusively within the framework of DFT for a host of applications. 展开更多
关键词 thermal density functional theory dft whichhoweversuffers understanding properties warm dense hydrogen thermal density functional theory understand further optimize inertial confinement fusion applicationsthe warm dense matter theory electronic correlations warm dense hydrogen density functional theory
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Occurrence,distribution,sources and health risks of per-and polyfluoroalkyl substances(PFAS)in water environment of Ningxia,northwestern China 认领 引用
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作者 Menglu Wang Wenchao Li +4 位作者 Cheng Ma Yijing Zhang Li Gao Dengchao Liu Qian Li 《ENGINEERING Environment》 SCIE EI CAS CSCD 2026年第5期53-67,共15页
Per-and polyfluoroalkyl substances(PFAS)have garnered increasing attention from regulatory authorities and the public because of their widespread presence in global water systems.However,data on PFAS in the aquatic en... Per-and polyfluoroalkyl substances(PFAS)have garnered increasing attention from regulatory authorities and the public because of their widespread presence in global water systems.However,data on PFAS in the aquatic environment of northwestern China,including Ningxia,are scarce.Surface water,sediment,and groundwater samples were analyzed to investigate the occurrence,spatiotemporal distribution,source apportionment,and human health risks associated with PFAS in the water environment of this region.In surface water,concentrations of the 19 PFAS ranged from 3.28 to 234.86 ng/L in the dry season and from 1.31 to 54.55 ng/L in the wet season.Eight PFAS were detected in the sediment and 17 in the groundwater.Their total concentrations ranged from Not Detected(ND)to 7.001 ng/g in sediment and from ND to 34.17 ng/L in groundwater.Positive Matrix Factorization analysis indicated that wastewater discharges from textile mills and other fluorine-containing manufacturers may be the primary source of PFAS in both surface and groundwater.The data from the human health risk assessment indicated that perfluorodecanoic acid,perfluorooctanoic acid,and perfluorooctane sulfonate have significant adverse effects on human health in Ningxia,according to the latest health advisory issued by the Environmental Protection Agency. 展开更多
关键词 Per-and polyfluoroalkyl substances(PFAS) Water environment Occurrence Source apportionment Health risk assessment
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Health GeoAI beyond algorithms:Embedding equity,accountability,and environmental responsibility 认领 引用
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作者 Anquan Xia Jia-jing Xu +6 位作者 Wangyi Shang Xiang Wei Di Zhao Cheng Ma Xiaolan Lv Qining Yang Yi Xu 《Geography and Sustainability》 CSCD 2026年第2期290-293,共4页
Health GeoAI-the integration of artificial intelligence with geographically contextualized health data-offers transformative potential for precision public health.Yet its rapid expansion,often driven by algorithmic pe... Health GeoAI-the integration of artificial intelligence with geographically contextualized health data-offers transformative potential for precision public health.Yet its rapid expansion,often driven by algorithmic perfor mance,risks reinforcing spatial inequities,obscuring decision pathways,and generating environmental external ities.This study introduces a forward-looking framework for Responsible Health GeoAI that embeds geographical equity,accountability,and environmental sustainability as core design imperatives rather than peripheral con siderations.Building on advances in foundation models and multimodal learning,the framework establishes two measurable boundaries-an equity floor ensuring subgroup fairness and calibration,and a carbon ceiling con straining computational and energy costs.These operational principles align GeoAI innovation with the broader goals of fairness,transparency,and sustainability.By situating GeoAI as a socio-technical system and integrating spatial validation,participatory governance,and carbon accountability,this study provides a structured pathway for developing GeoAI that is not only intelligent but also equitable,explainable,and environmentally respon sible.The framework offers strategic insights for the institutionalization of responsible AI in global health and sustainability policy. 展开更多
关键词 Health GeoAI Responsible AI Geographical equity Foundation models Digital health governance Sustainability
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Quantitative oximetry with photoacoustic computed tomography:Principles,progress,and prospects 认领 引用 被引量：1
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作者 Xingyang Liu Chuhua Wu +4 位作者 Songde Liu Chenlong Zhu Rongkang Gao Cheng Ma Chao Tian 《Journal of Innovative Optical Health Sciences》 SCIE EI CSCD 2026年第4期22-46,共25页
Photoacoustic computed tomography(PACT)is an emerging biomedical imaging modality that uniquely combines high spatial resolution with deep penetration,holding great promise for noninvasive mapping of tissue oxygen sat... Photoacoustic computed tomography(PACT)is an emerging biomedical imaging modality that uniquely combines high spatial resolution with deep penetration,holding great promise for noninvasive mapping of tissue oxygen saturation(sO2)—a critical biomarker in metabolism and pathophysiology.However,achieving accurate quantitative sO2 mapping is fundamentally challenged by the spatiotemporal heterogeneity of opticalfluence,which leads to the spectral coloring effect and severely distorts measurements in deep tissue.This review systematically summarizes the evolution of quantitative PACT oximetry,critically analyzing techniques devised to overcome this bottleneck.We explore the limitations of linear unmixing and provide a focused analysis of advanced correction strategies,including photon transport modeling,acoustic-spectrum-based self-calibration,multimodality fusion,statistical inference,and learning-based approaches.By synthesizing and contrasting the strengths and weaknesses of these diverse approaches,this review aims to serve as a comprehensive reference for researchers,supporting the development of robust oximetry techniques and facilitating the clinical translation of PACT. 展开更多
关键词 Photoacoustic computed tomography blood oxygen saturation fluence correction deep learning
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Microstructure and stress corrosion cracking of a SA508-309L/308L-316L dissimilar metal weld joint in primary pressurized water reactor environment 认领 引用 被引量：6
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作者 Lijin Dong Cheng Ma +2 位作者 Qunjia Peng En-Hou Han Wei Ke 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2020年第5期1-14,共14页
Stress corrosion cracking(SCC) of an SA508-309 L/308 L–316 L dissimilar metal weld joint in primary pressurized water reactor environment was investigated by the interrupted slow strain rate tension tests following a... Stress corrosion cracking(SCC) of an SA508-309 L/308 L–316 L dissimilar metal weld joint in primary pressurized water reactor environment was investigated by the interrupted slow strain rate tension tests following a microstructure characterization. The 308 L weld metal shows a higher content of δ ferrite than the 309 L weld metal. In addition, no obvious Cr-depletion but carbides precipitation at δ phase boundaries was observed in both 308 L and 309 L weld metals. The slow strain rate tension tests showed that the SCC susceptibility of the base and weld metals of the dissimilar metal weld joint follows the order of SA508 < 308 L weld metal < the heat affected zone of 316 L base metal < 309 L weld metal.The higher SCC susceptibility of 309 L weld metal than that of 308 L weld metal is likely due to the lower content of δ ferrite. In addition, a preferential SCC initiation in the 309 L weld metal adjacent to 308 L weld metal is attributed to few carbides in this region. 展开更多
关键词 Dissimilar metal weld joint Stress corrosion cracking Microstructure Primary pressurized water reactor environment Slow strain rate tension
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Effects of calcium-binding sites in the S2–S3 loop on human and Nematostella vectensis TRPM2 channel gating processes 认领 引用 被引量：3
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作者 Yu-huan LUO Xia-fei YU +2 位作者 Cheng MA Fan YANG Wei YANG 《Journal of Zhejiang University-SCIENCE B》 SCIE CAS CSCD 2019年第12期972-982,共11页
As a crucial signaling molecule, calcium plays a critical role in many physiological and pathological processes by regulating ion channel activity. Recently, one study resolved the structure of the transient receptor ... As a crucial signaling molecule, calcium plays a critical role in many physiological and pathological processes by regulating ion channel activity. Recently, one study resolved the structure of the transient receptor potential melastatin 2(TRPM2) channel from Nematostella vectensis(nvTRPM2). This identified a calcium-binding site in the S2–S3 loop, while its effect on channel gating remains unclear. Here, we investigated the role of this calcium-binding site in both nvTRPM2 and human TRPM2(hTRPM2) by mutagenesis and patch-clamp recording. Unlike hTRPM2, nvT RPM2 cannot be activated by calcium alone. Moreover, the inactivation rate of nvTRPM2 was decreased as intracellular calcium concentration was increased. In addition, our results showed that the four key residues in the calcium-binding site of S2–S3 loop have similar effects on the gating processes of nvTRPM2 and hTRPM2. Among them, the mutations at negatively charged residues(glutamate and aspartate) substantially decreased the currents of nvT RPM2 and hTRPM2. This suggests that these sites are essential for calcium-dependent channel gating. For the charge-neutralizing residues(glutamine and asparagine) in the calcium-binding site, our data showed that glutamine mutating to alanine or glutamate did not affect the channel activity, but glutamine mutating to lysine caused loss of function. Asparagine mutating to aspartate still remained functional, while asparagine mutating to alanine or lysine led to little channel activity. These results suggest that the side chain of glutamine has a less contribution to channel gating than does asparagine. However, our data indicated that both glutamine mutating to alanine or glutamate and asparagine mutating to aspartate accelerated the channel inactivation rate, suggesting that the calcium-binding site in the S2–S3 loop is important for calcium-dependent channel inactivation. Taken together, our results uncovered the effect of four key residues in the S2–S3 loop of TRPM2 on the TRPM2 gating process. 展开更多
关键词 TRPM2 Calcium-binding site S2–S3 loop Channel activation Channel inactivation
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Nano-silica modified lightweight and high-toughness carbon fiber/phenolic ablator with excellent thermal insulation and ablation performance 认领 引用 被引量：1
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作者 Wenjie Xu Wenda Song +4 位作者 Xianfeng Jia Cheng Ma Jitong Wang Wenming Qiao Licheng Ling 《Defence Technology（防务技术）》 SCIE EI CAS CSCD 2024年第1期192-199,共8页
Lightweight and high-toughness carbon fiber/phenolic ablator(CFPA)is required as the Thermal Protection System(TPS)material of aerospace vehicles for next-generation space missions.To improve the ablative properties,s... Lightweight and high-toughness carbon fiber/phenolic ablator(CFPA)is required as the Thermal Protection System(TPS)material of aerospace vehicles for next-generation space missions.To improve the ablative properties,silica sol with good particle size distribution prepared using tetramethoxysilane(TMOS)was blended with natural rubber latex and deposited onto carbon fiber felt,which was then integrated with phenolic aerogel matrix,introducing nano-silica into the framework of CFPA.The modified CFPA with a low density of 0.28—0.31 g/cm3exhibits strain-in-fracture as high as 31.2%and thermal conductivity as low as 0.054 W/(m·K).Furthermore,a trace amount of nano-silica could effectively protect CFPA from erosion of oxidizing atmosphere in different high-temperature environments.The oxyacetylene ablation test of 3000°C for 20 s shows a mass ablation rate of 0.0225 g/s,a linear ablation rate of 0.209 mm/s for the modified CFPA,which are 9.64%and 24.82%lower than the unmodified one.Besides,the long-time butane ablation test of 1200°C for 200 s shows an insignificant recession with mass and linear ablation rate of 0.079 g/s and 0.039 mm/s,16.84%and 13.33%lower than the unmodified one.Meanwhile,the fixed thermocouple in the test also demonstrates a good thermal insulation performance with a low peak back-face temperature of 207.7°C,12.25%lower than the unmodified one.Therefore,the nano-silica modified CFPA with excellent overall performance presents promising prospects in high-temperature aerospace applications. 展开更多
关键词 Nano-silica Carbonfiber Phenolic aerogel Insulation Ablation
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A new nonlinear photoconductive terahertz radiation source based on photon-activated charge domain quenched mode 认领 引用
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作者 Wei Shi Rujun Liu +1 位作者 Chengang Dong Cheng Ma 《Chinese Physics B》 SCIE EI CAS CSCD 2020年第7期147-150,共4页
We present a high-performance terahertz(THz)radiation source based on the photon-activated charge domain(PACD)quenched mode of GaAs photoconductive antennas(GaAs PCA).The THz radiation characteristics of the GaAs PCA ... We present a high-performance terahertz(THz)radiation source based on the photon-activated charge domain(PACD)quenched mode of GaAs photoconductive antennas(GaAs PCA).The THz radiation characteristics of the GaAs PCA under different operating modes are studied.Compared with the linear mode,the intensity of THz wave radiated by the GaAs PCA can be greatly enhanced due to the avalanche multiplication effect of carriers in the PACD quenched mode.The results show that when the carrier multiplication ratio is 16.92,the peak-to-peak value of THz field radiated in the PACD quenched mode increases by as much as about 4.19 times compared to the maximum values in the linear mode. 展开更多
关键词 photoconductive antenna terahertz time-domain spectroscopy photon-activated charge domain quenched mode
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Manipulating selenium molecular configuration in N/O dual-doped porous carbon for high performance potassium-ion storage 认领 引用 被引量：3
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作者 Dongjun Li Lifeng Wang +7 位作者 Xiaolong Cheng Yu Yao Yu Jiang Pengcheng Shi Ying Wu Xiaojun Wu Cheng Ma Yan Yua 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第11期581-589,I0014,共9页
Potassium-selenium(K-Se)batteries have attracted more and more attention because of their high theoretical specific capacity and natural abundance of K resources.However,dissolution of polyselenides,large volume expan... Potassium-selenium(K-Se)batteries have attracted more and more attention because of their high theoretical specific capacity and natural abundance of K resources.However,dissolution of polyselenides,large volume expansion during cycling and low utilization of Se remain great challenges,leading to poor rate capability and cycle life.Herein,N/O dual-doped carbon nanofibers with interconnected micro/mesopores(MMCFs)are designed as hosts to manipulate Se molecular configuration for advanced flexible K-Se batteries.The micropores play a role in confining small Se molecule(Se2–3),which could inhibit the formation of polyselenides and work as physical barrier to stabilize the cycle performance.While the mesopores can confine long-chain Se(Se4–7),promising sufficient Se loading and contributing to higher discharge voltage of the whole Se@MMCFs composite.The N/O co-doping and the 3D interpenetrating nanostructure improve electrical conductivity and keep the structure integrity after cycling.The obtained Se2–3/Se4–7@MMCFs electrode exhibits an unprecedented cycle life(395 mA h g−1 at 1 A g−1 after 2000 cycles)and high specific energy density(400 Wh kg−1,nearly twice the specific energy density of the Se2–3@MMCFs).This study offers a rational design for the realization of a high energy density and long cycle life chalcogen cathode for energy storage. 展开更多
关键词 Carbon nanofibers with interconnected micro/mesopores Manipulating Se molecules Heteroatom-doping Flexible K-Se batteries
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Impact of Green Finance on Agricultural Green Development in Henan Province 认领 引用
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作者 Lefeng LIN Yi SHEN +1 位作者 Cheng MA Sihai ZHANG 《Asian Agricultural Research》 2026年第1期14-17,24,共4页
Against the backdrop of China s accelerated green development and its pursuit of the"dual carbon"goals,green finance,as a crucial instrument for the rational allocation of resources,plays a significant role ... Against the backdrop of China s accelerated green development and its pursuit of the"dual carbon"goals,green finance,as a crucial instrument for the rational allocation of resources,plays a significant role in promoting agricultural green transformation.Taking Henan Province as a case study,this research employs panel data from 18 prefecture-level cities spanning 2014 to 2023,utilizing dynamic panel models and mediating effect models for empirical analysis.The findings reveal that green finance indirectly fosters agricultural green development by driving agricultural technological progress.This promoting effect is significant,with the mediating effect accounting for 3.67%.Based on these results,policy recommendations are proposed:expanding the coverage of green finance and constructing a diversified product system;comprehensively promoting agricultural technological innovation and mechanization development;and coordinating and integrating green financial resources to facilitate agricultural green transformation tailored to local conditions. 展开更多
关键词 Green finance Agricultural green development Mediating effect
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Lignans are the main active components of Schisandrae Chinensis Fructus for liver disease treatment:a review 认领 引用
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作者 Ke Fu Shu Dai +6 位作者 Cheng Ma Yafang Zhang Shenglin Zhang Cheng Wang Lihong Gong Honglin Zhou Yunxia Li 《Food Science and Human Wellness》 SCIE CAS CSCD 2024年第5期2425-2444,共20页
As a traditional Chinese herbal medicine,Schisandrae Chinensis Fructus(SC)has been used in medicine and food industry due to its health care and therapeutic effects.Over the past 20 years,the use of SC and its active ... As a traditional Chinese herbal medicine,Schisandrae Chinensis Fructus(SC)has been used in medicine and food industry due to its health care and therapeutic effects.Over the past 20 years,the use of SC and its active ingredient lignans in the prevention and treatment of liver diseases has been increasing,and their hepatoprotective effects has increased the interest of the public and academia.Therefore,in the present work,we first determined the effectiveness of SC in the treatment of liver diseases such as metabolic associated fatty liver disease,alcoholic liver disease,cholestatic liver disease and acute liver injury.Subsequently,the pharmacological effects and molecular mechanisms of lignans,the active components of SC,for liver disease treatment were comprehensively summarized for the first time.The results showed that the lignans in SC could achieve hepatoprotective effects by regulating lipid metabolism,anti-fibrosis,anti-inflammation,anti-oxidation,anti-tumor and regulating bile acid metabolism.The mechanism mainly involved adenosine 5’-monophosphate-activated protein kinase,endoplasmic reticulum stress,sterol regulatory element binding protein 1c,autophagy,transforming growth factor-β,mitogen-activated protein kinase,microRNA,nuclear factor kappa-B,nuclear factor erythroid-2-related factor 2,heat shock proteins and pregnane X receptor signaling pathways.These results can lay a scientific foundation for the development of hepatoprotective drugs or functional foods from SC/lignans. 展开更多
关键词 Schisandrae Chinensis Fructus Lignans Hepatoprotection Pharmacological effects Molecular mechanism
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Polyoxometalate/cobalt selenide functional separator for synergistic polysulfide anchoring and catalysis in lithium-sulfur batteries 认领 引用 被引量：2
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作者 Tang-Suo Li Yi Liu +7 位作者 Xue-Cheng Zhang Lu-Nan Zhang Yu-Chao Wu Xin-Yuan Jiang Qiu-Ping Zhou Cheng Ma Lu-Bin Ni Guo-Wang Diao 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第5期551-564,共14页
The polysulfides shuttle effect,sluggish sulfur redox kinetics and the corrosion of the Li anode have become important factors limiting the commercial application of lithium-sulfur batteries(LSBs).Herein,the polyoxome... The polysulfides shuttle effect,sluggish sulfur redox kinetics and the corrosion of the Li anode have become important factors limiting the commercial application of lithium-sulfur batteries(LSBs).Herein,the polyoxometalate(POM)nanoclusters with high catalytic activity and cobalt selenide with strong polarity are initially complemented to construct a PMo12/CoSe2@NC/CNTs multifunctional separator that can simultaneously solve the above problems.A series of experimental and theoretical results demonstrate that the Keggin-type POM,H3PMo12O40nH2O(PMo12)nanoclusters could function as catalytic centers for sulfur-involved transformations,with the CoSe2nanoparticles serving as adsorption sites for soluble polysulfides.Accordingly,the assembled battery with the PMo12/CoSe2@NC/CNTs modified separator achieves an initial discharge capacity of 1263.79 mA h g-1,maintaining 635.77 mA h g-1,with a capacity decay rate of 0.06%per cycle after 500 cycles at 3C.This work provides a strategic approach for incorporating POM nanoclusters with polar periodic nanomaterials in LSB separators,contributing to the development of multifunctional separator materials,thus promoting the advancement of energy storage systems. 展开更多
关键词 Polyoxometalate Cobalt selenide Multifunctional separator Polysulfides adsorption and catalysis Lithium-sulfur batteries
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Atomically dispersed Fe-N5 coordination structure anchored in defective g-C3N4 as oversaturated asymmetric single-atom catalysts for accelerating redox kinetics in Li-S batteries 认领 引用 被引量：3
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作者 Jun Wang Jinxin Wang +4 位作者 Yongzheng Zhang Cheng Ma Jitong Wang Wenming Qiao Licheng Ling 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第6期230-239,共10页
Lithium-sulfur(Li-S)batteries are regarded as the most formidable competitor to lithium-ion batteries due to their superior theoretical capacity.However,the negative impact of soluble lithium polysulfide(LiPSs)and slo... Lithium-sulfur(Li-S)batteries are regarded as the most formidable competitor to lithium-ion batteries due to their superior theoretical capacity.However,the negative impact of soluble lithium polysulfide(LiPSs)and slow redox reaction kinetics seriously hamper the commercialization of Li-S batteries.In this study,a defect-rich single-atom catalyst with an oversaturated asymmetric Fe-N5coordination structure anchored in defective g-C3N4(C3N4-Fe@rGO)is designed via an absorption-pyrolysis strategy.The two-dimensional(2D)conducting C3N4@graphene structure with abundant defect sites accelerates the trans-fer and transportation of lithium ions and electrons.The oversaturated asymmetric Fe-N5coordination structure effectively improves the adsorbility of LiPSs and accelerates the redox kinetics of sulfur species.Hence,the Li-S cell with a C3N4-Fe@rGO modified separator reveals a high initial capacity(1197.1 mAh g-1 at 0.2 C)and a low capacity decay rate(0.037%per cycle after 900 cycles at 1 C).Even at high sulfur loading and extreme temperatures of 0℃,it also shows good cycling performance.This work creates ideas for synthesizing oversaturated single-atom coordination environments and an efficient route to the practical realization of the Li-S batteries. 展开更多
关键词 Defective Oversaturated asymmetric Single-atom Fe catalyst Sulfur conversion kinetics Lithium-sulfur batteries
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Photoacoustic microscopy depth-of-field extension method and system based on three-dimensional continuity and sparsity deconvolution 认领 引用 被引量：1
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作者 Tingting Li Jialin Li +2 位作者 Lingyu Ma Cheng Ma Mingjian Sun 《Journal of Innovative Optical Health Sciences》 SCIE EI CSCD 2025年第6期27-41,共15页
Optical-resolution photoacoustic microscopy is a novel imaging technique that combines the advantages of optical and ultrasound imaging,enabling high-resolution visualization of biological tissues at the micrometer sc... Optical-resolution photoacoustic microscopy is a novel imaging technique that combines the advantages of optical and ultrasound imaging,enabling high-resolution visualization of biological tissues at the micrometer scale.However,the divergence of the excited Gaussian beam limits the depth-of-field of the system to less than 100μm,which hinders accurate three-dimensional imaging of living tissues and restrictsits applicability in biological research.Therefore,there is an urgent need for an effective method to enhance the depth-of-field without altering the hardware configuration.This paper presents a photoacoustic microscopy depth-of-field extension method and system based on three-dimensional continuity and sparsity deconvolution.This method utilizes a depth-varying point spread function and incorporates continuity and sparsity con-straints into the deconvolution process to mitigate the effect of background noise,enhancing the stability and accuracy of the depth-of-field extension.Experimental results using tungsten wire phantoms suggest that the depth-of-field of system can be extended to 650 pm,which is 7.2 times greater than conventional system,while improving the resolution of the defocused region by an average factor of 3.5.Furthermore,experiments on zebrafish and nude mouse ears with irregular topologies demonstrate that the proposed method successfully overcomes image blurring and the loss of structural information due to limited depth-of-field.All the results suggest that the system with higher lateral resolution and enhanced depth-of-field has significant potential for a wide range of practical biomedical applications. 展开更多
关键词 Photoacoustic microscopy depth-of-field extension deconvolution
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18F-FDG PET/CT and 18F-RCCB6 PET/CT for diagnosis of primary lung cancer in a patient with a history of clear cell renal carcinoma 认领 引用
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作者 Cheng Ma Qianyun Wu +4 位作者 You Zhang Shuxian An Jianjun Liu Xiaojing Zhao Weijun Wei 《Journal of Nuclear Medicine and Molecular Imaging》 2026年第2期107-109,共3页
Clear cell renal cell carcinoma(ccRCC)has a high risk of postoperative recurrence and metastasis.Accurate differentiation between ccRCC lung metastases and secondary primary lung cancer is crucial for clinical managem... Clear cell renal cell carcinoma(ccRCC)has a high risk of postoperative recurrence and metastasis.Accurate differentiation between ccRCC lung metastases and secondary primary lung cancer is crucial for clinical management.A 69-year-old male with a history of partial nephrectomy for ccRCC was found to have a right upper lobe pulmonary lesion during follow-up.To clarify the diagnosis,18F-fluorodeoxyglucose(18F-FDG)positron emission tomography/computed tomography(PET/CT)and CD70-targeted 18F-RCCB6 immuno-PET/CT were performed sequentially.18F-RCCB6 immuno-PET/CT showed markedly lower tumor uptake than 18F-FDG PET/CT,strongly indicating a primary lung lesion rather than metastatic ccRCC.This case highlights the complementary role of 18F-FDG PET/CT and 18F-RCCB6 immuno-PET/CT in distinguishing ccRCC metastases from secondary primary lung cancer,providing critical guidance for clinical decision-making in patients with suspected pulmonary lesions and ccRCC history. 展开更多
关键词 Clear cell renal cell carcinoma CD70 Primary lung cancer Lung metastases Fluorodeoxyglucose F18 Positron emission tomography/computed tomography 18F-RCCB6
延展型阴离子表面活性剂泡沫性能研究 认领 引用
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作者 闫飞 马骋 +3 位作者 徐志成 宫清涛 张磊 张路 《日用化学工业（中英文）》 CAS 北大核心 2025年第4期415-421,共7页
研究了不同结构延展型阴离子表面活性剂的泡沫性质,获得了发泡能力(FC)、携液量、泡沫膨胀系数(FE)、排液半衰期、泡沫半衰期、泡沫数量、泡沫分散度(PDI)等各项参数,探究了分子结构中引入氧丙烯(PO)基团和氧乙烯(EO)基团对泡沫性质的... 研究了不同结构延展型阴离子表面活性剂的泡沫性质,获得了发泡能力(FC)、携液量、泡沫膨胀系数(FE)、排液半衰期、泡沫半衰期、泡沫数量、泡沫分散度(PDI)等各项参数,探究了分子结构中引入氧丙烯(PO)基团和氧乙烯(EO)基团对泡沫性质的影响规律。研究表明,弱疏水的PO链不能有效结合水分子,液膜排液速度较快,泡沫稳定性较差;亲水的EO基团的引入削弱了离子头间的静电斥力,并增强表面吸附膜结合水分子的能力,降低泡沫体系的排液速率,提高体系的泡沫性能;过长的EO链破坏表面膜的紧密排列,不利于表面张力降低,泡沫性能变差。C12E3C分子的结构优势使其将表面张力降至22 mN/m,表现出最佳的发泡能力和稳定性,能同时稳定大小泡沫,并在12 h后形成稳定持久的干泡。研究结果对进一步探索延展型表面活性剂在泡沫体系中的应用具有借鉴作用。 展开更多
关键词 延展型表面活性剂 PO数 EO数 发泡能力 泡沫稳定性
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