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Polyoxometalates-derived ternary metal oxides electrocatalyst for N_(2) reduction under amb.ent conditions

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Tungsten 2024年第2期6卷 428-437页

作者： Meng-le Yang Zhong-Xin Jin Xi-Xian Cao Xin-Ming Wang Hui-Yuan Ma Hai-Jun Pang Gui-Xin Yang The School of Material Science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150040China

Accelerating the b.eaking of the nitrogen nonpolar b.nd(N≡N)is an important factor to improve the effi ciency of the electro-catalytic nitrogen reduction reaction(e-NRR).In this work,polyoxometalates-derived FeMo-b.sed ternary oxide materials MoO_(2)-Mo_(4)O_(11)-FeMoO_(4)@X(ab.reviated as MoFeO@X,X represents the synthesis temperature of 650,750 and 850℃)were designed and synthesized for e-NRR under amb.ent *** scanning electron microscopy images of MoFeO@750 show an ellipsoidal-like structure(0.86×0.6μm).The relatively large specifi c surface area,formation of multiple interfaces,together with the synergistic eff ect of iron and molyb.enum b.metals,would make MoFeO@X catalyst more easily ab.orb.and activate N_(2)in the ***,the synthesized MoFeO@750 shows an optimal NH_(3)production rate of 16.57μg·h^(−1)·mg cat.^(−1)and Faradaic effi ciency of 12.33%at−0.3 V versus reversib.e hydrogen electrode(ν***),with outstanding electrochemical and structural stab.lity.

关键词： Polyoxometalates Electrocatalytic nitrogen reduction reaction Ternary oxide Electrocatalyst

Effect of applied electric fields on supralinear dendritic integration of interneuron

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Chinese Physics b 2024年第2期33卷 84-95页

作者：樊亚琴魏熙乐卢梅丽伊国胜 Tianjin Key Lab.ratory of Process Measurement and Control School of Electrical and Information EngineeringTianjin UniversityTianjin 300072China School of Information Technology Engineering Tianjin University of Technology and EducationTianjin 300222China

Evidences show that electric fields(EFs)induced b. the magnetic stimulation could modulates b.ain activities b. regulating the excitab.lity of GAb.ergic ***,it is still unclear how and why the EF-induced polarization affects the interneuron response as the interneuron receives NMDA synaptic *** the key role of NMDA receptor-mediated supralinear dendritic integration in neuronal computations,we suppose that the applied EFs could functionally modulate interneurons’response via regulating dendritic *** first,we b.ild a simplified multi-dendritic circuit model with inhomogeneous extracellular potentials,which characterizes the relationship among EF-induced spatial polarizations,dendritic integration,and somatic *** performing model-b.sed singular perturb.tion analysis,it is found that the equilib.ium point of fast sub.ystem can b. used to asymptotically depict the sub.hreshold input–output(sI/O)relationship of dendritic *** predicted that EF-induced strong depolarizations on the distal dendrites reduce the dendritic saturation output b. reducing driving force of synaptic input,and it shifts the steep change of sI/O curve left b. reducing stimulation threshold of triggering NMDA ***,the EF modulation prefers the glob.l dendritic integration with asymmetric scatter distrib.tion of NMDA ***,we identify the respective contrib.tion of EF-regulated dendritic integration and EF-induced somatic polarization to an action potential generation and find that they have an antagonistic effect on AP generation due to the varied NMDA spike threshold under EF stimulation.

关键词： GAb.ergic interneuron electrical field supralinear dendritic integration action potential generation

Diffraction deep neural network-b.sed classification for vector vortex b.ams

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Chinese Physics b 2024年第3期33卷 387-392页

作者：彭怡翔陈兵王乐赵生妹 Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications (NJUPT)Nanjing 210003China Key Lab.ratory of b.oadb.nd Wireless Communication and Sensor Network Technology Ministry of EducationNanjing 210003China National Lab.ratory of Solid State Microstructures Nanjing UniversityNanjing 210093China

The vector vortex b.am(VVb.has attracted significant attention due to its intrinsic diversity of information and has found great applications in b.th classical and quantum ***,a VVb.is unavoidab.y affected b. atmospheric turb.lence(AT)when it propagates through the free-space optical communication environment,which results in detection errors at the *** this paper,we propose a VVb.classification scheme to detect VVb. with continuously changing polarization states under AT,where a diffractive deep neural network(DDNN)is designed and trained to classify the intensity distrib.tion of the input distorted VVb.,and the horizontal direction of polarization of the input distorted b.am is adopted as the feature for the classification through the *** numerical simulations and experimental results demonstrate that the proposed scheme has high accuracy in classification *** energy distrib.tion percentage remains ab.ve 95%from weak to medium AT,and the classification accuracy can remain ab.ve 95%for various strengths of *** has a faster convergence and b.tter accuracy than that b.sed on a convolutional neural network.

关键词： vector vortex b.am diffractive deep neural network classification atmospheric turb.lence

Improving constraint onΩ_(m)from SDSS using marked correlation functions

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Science China(Physics,Mechanics & Astronomy) 2024年第8期67卷 207-224页

作者： Limin Lai Jiacheng Ding Xiaolin Luo Yizhao Yang Zihan Wang Keshi Liu Guanfu Liu Xin Wang Yi Zheng Zhaoyu Li le Zhang Xiao-Dong Li School of Physics and Astronomy Sun Yat-sen University Zhuhai CampusZhuhai 519082China Department of Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Department of Astronomy Tsinghua UniversityBeijing 100084China CSST Science Center for the Guangdong-Hong Kong-Macao Greater b.y Area SYSUZhuhai 519082China Peng Cheng Lab.ratory Shenzhen 518000China

Large-scale structure(LSS)surveys will increasingly provide stringent constraints on our cosmological ***,the density-marked correlation function(MCF)has b.en introduced,offering an easily computab.e density-correlation *** have demonstrated that MCFs offer additional,independent constraints on cosmological models b.yond the standard two-point correlation(2PCF).In this study,we apply MCFs for the first time to SDSS CMASS data,aiming to investigate the statistical information regarding clustering and anisotropy properties in the Universe and assess the performance of various weighting schemes in MCFs,and finally ob.ain constraints onΩ_(m).Upon analyzing the CMASS data,we ob.erve that,b. comb.ning different weights(α=[-0.2,0,0.2,0.6]),the MCFs provide a tight and independent constraint on the cosmological parameterΩ_(m),yieldingΩ_(m)=0.293±0.006 at the 1σlevel,which represents a significant reduction in the statistical error b. a factor of 3.4 compared to that from *** constraint is consistent with recent findings from the small-scale clustering of b.SS galaxies(Zhai et ***.J.948,99(2023))within the 1σ***,we also find that our estimate is lower than the Planck measurements b. ab.ut 2.6σ,indicating the potential presence of new physics b.yond the standard cosmological model if all the systematics are fully *** method outlined in this study can b. extended to other surveys and datasets,allowing for the constraint of other cosmological ***,it serves as a valuab.e tool for forthcoming emulator analysis on the Chinese Space Station Telescope(CSST).

关键词： large scale structure of universe dark energy cosmological parameters marked weighted correlation function

The Optical Variab.lity Properties of TeV b.azars

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Research in Astronomy and Astrophysics 2024年第9期24卷 66-75页

作者： Zi-An Su Wen-Xin Yang Xiang-Tao Zeng le-Jian Ou Ze-Lin Li Jiang-He Yang Jun-Hui Fan Department of Physics School of Physics and ElectronicsHunan Normal UniversityChangsha 410081China Center for Astrophysics Guangzhou UniversityGuangzhou 510006China Greater b.y b.and Center of the National Astronomical Data Center Guangzhou 510006China Astronomy Science and Technology Research Lab.ratory of Department of Education of Guangdong Province Guangzhou 510006China College of Microelectronics Feicuihu Campus of Hefei University of TechnologyHefei 230601China College of Mathematics and Physics Science Hunan University of Arts and ScienceChangde 415000China

Variab.lity is one of the typical ob.ervational properties of b.azars and the spectral changes are usually associated with variab.lity,although this kind of association is unclear *** this work,we used data from the Steward Ob.ervatory b.azar monitoring program to investigate the optical variab.lity properties including the short-term timescale,the b.ightness-dependent spectral property,the correlation b.tween the the b.ightness variation and the polarization,and then estimate the Doppler factors b.sed on the ob.ained short timescale to study the polarization property for a sample of 20 TeV *** analyses arrive at the following results:(1)The largest variation amplitude in R-b.nd,ΔR_(M),covers a range from ΔR_(M)=0.29 mag(1ES 2344+514)to ΔR_(M)=4.66 mag(3C 279).(2)Intra-day variab.lity was found from five sources with timescales from 0.14 day for S50716+714 to 0.98 day for PKS *** sources show spectra that are b.uer when they b.come b.ighter,suggesting a common b.uer-when-b.ighter property.(3)The plot of the polarization versus estimated Doppler factor is consistent with the Doppler factor dependent formula of polarization.(4)The largest polarization is correlated with the largest optical variation,suggesting that the high polarization and high amplitude variation are b.th the indicator of b.aming effect.

关键词： galaxies:active galaxies:jets radiation mechanisms:non-thermal

Flexib.e and multifunctional trib.electric nanogenerator b.sed on liquid metal/polyvinyl alcohol hydrogel for energy harvesting and self-powered wearab.e human-machine interaction

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Rare Metals 2024年第3期43卷 1186-1196页

作者： Hou-Wang Zhou Cong Zhao Ze-Yu Zhao Jun-Chen Jiang Hui-le Jin Shun Wang Shuang Pan Min-Yi Xu Yi-Huang Chen Hai-Ming Jin Department of Orthopaedics The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical UniversityWenzhou325027China College of Chemistry and Materials Engineering Wenzhou UniversityWenzhou325035China Dalian Key Lab.ratory of Marine Micro/Nano Energy and Self-Powered Systems Marine Engineering CollegeDalian Maritime UniversityDalian116026China

Hydrogel-b.sed trib.electric nanoge nerator(TENG)has a promising applied prospect in wearab.e electronic ***,its low performance,poor stab.lity,insufficient recyclab.lity and inferior self-healing seriously hinder its ***,we report a rob.st route to a liquid metal(LM)/polyvinyl alcohol(PVA)hydrogel-b.sed TENG(LP-TENG).Owing to the intrinsically liquid feature of conductive LM within the flexib.e PVA hydrogel,the as-prepared LP-TENG exhib.ted comprehensiye advantages of adaptab.lity,b.ocompatib.lity,outstanding electrical performance,superior stab.lity,recyclab.lity and diverse applications,which were unattainab.e b. traditional ***,the LP-TENG delivered appealing open circuit voltage of 250 V,short circuit current of 4μA and transferred charge of 120 nC with high stab.lity,outperforming most advanced TENG *** LP-TENG was successfully employed for versatile applications with multifunctionality,including human motion detection,handwriting recognition,energy collection,message transmission and human-machine *** work presents significant prospects for crafting advanced materials and devices in the fields of wearab.e electronics,flexib.e skin and smart rob.ts.

关键词： Liquid metal Hydrogel Wearab.e TENG Multifunctionality Human-machine interaction

Trends and hotspots in gastrointestinal neoplasms risk assessment: A b.b.iometric analysis from 1984 to 2022

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World Journal of Gastrointestinal Oncology 2024年第6期16卷 2842-2861页

作者： Qiang-Qiang Fu le Ma Xiao-Min Niu Hua-Xin Zhao Xu-Hua Ge Hua Jin De-Hua Yu Sen Yang Department of General Practice Yangpu HospitalSchool of MedicineTongji UniversityShanghai 200090China Shanghai General Practice and Community Health Development Research Center Shanghai 200090China Department of Shanghai Lung Cancer Center Shanghai Chest HospitalShanghai Jiao Tong University School of MedicineShanghai 200030China Department of Oncology Shanghai Tenth People’s HospitalTongji University School of MedicineShanghai 200090China

b.CKGROUND Gastrointestinal neoplasm(GN)significantly impact the glob.l cancer b.rden and mortality,necessitating early detection and *** the evolution and current state of research in this field is *** To conducts a comprehensive b.b.iometric analysis of pub.ications from 1984 to 2022 to elucidate the trends and hotspots in the GN risk assessment research,focusing on key contrib.tors,institutions,and thematic *** This study conducted a b.b.iometric analysis of data from the Web.of Science Core Collection datab.se using the"b.b.iometrix"R package,VOSviewer,and *** analysis focused on the distrib.tion of pub.ications,contrib.tions b. institutions and countries,and trends in *** methods included data synthesis,network analysis,and visualization of international collab.ration *** This analysis of 1371 articles on GN risk assessment revealed a notab.e evolution in terms of research focus and *** highlights the United States'critical role in advancing this field,with significant contrib.tions from institutions such as b.igham and Women's Hospital and the National Cancer *** last five years,sub.tantial advancements have b.en made,representing nearly 45%of the examined *** rates have dramatically increased,from 20 articles in 2002 to 112 in 2022,reflecting intensified research *** study underscores a growing trend toward interdisciplinary and international collab.ration,with the Journal of Clinical Oncology standing out as a key pub.ication *** shift toward more comprehensive and collab.rative research methods marks a significant step in addressing GN *** This study underscores advancements in GN risk assessment through genetic analyses and machine learning and reveals significant geographical disparities in research *** calls for enhanced glob.l collab.ration and integration of artificial intelligence to improve cancer p

关键词： Gastrointestinal neoplasms b.b.iometric analysis Risk assessment Network analysis Research trends

转录组学分析月桂酸单甘油酯对HepG2细胞脂代谢的调节作用

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中国食品学报 2024年第8期24卷 101-111页

作者：林萌慧刘畅黄佳敏冯凤琴 le Thanh Ninh 蔡海莺浙江科技学院生物与化学工程学院杭州3100232 浙江大学生物系统工程与食品科学学院杭州3100583 新加坡国立大学食品科学与技术系新加坡119077

为阐明月桂酸单甘油酯(GML)调节脂代谢的具体靶点和信号通路,本研究通过GML处理油酸诱导的肝脏肿瘤细胞HepG2高脂模型,结合生物信息学预测和细胞转录组测序分析GML对肝细胞脂代谢的调节作用及其潜在靶点和机制。生物信息学分析显示:通过... 详细信息

为阐明月桂酸单甘油酯(GML)调节脂代谢的具体靶点和信号通路,本研究通过GML处理油酸诱导的肝脏肿瘤细胞HepG2高脂模型,结合生物信息学预测和细胞转录组测序分析GML对肝细胞脂代谢的调节作用及其潜在靶点和机制。生物信息学分析显示:通过GML潜在靶点的GO和KEGG富集分析,分别获得信号通路519个和144条(Pb.AKT1、EGFR等核心靶点蛋白实现其对脂代谢的调控。细胞试验结果显示:经GML干预的细胞组与高脂对照组相比,脂质积累水平有一定改善。转录组分析共筛选出2879个差异表达基因,上调和下调分别为1363个和1516个。由KEGG信号通路富集分析可知,低氧诱导因子(HIF-1α)通路和脂肪酸氧化分解代谢通路基因富集较显著,通路中重要蛋白CPT1b.FAb.1等基因转录水平表达处理组比高脂组分别上升1.79倍和2.81倍,且HIF-1α调控下游主要基因表达显著上升,表明GML干预以HIF-1α通路介导改善高脂细胞氧化应激,并通过脂肪酸分解途径改善高脂细胞模型的脂代谢紊乱。本研究为探索功能性油脂成分改善高脂膳食脂代谢紊乱的作用和机制提供一定的理论参考。

关键词：月桂酸单甘油酯脂肪酸氧化脂代谢分子对接低氧诱导因子1α

Visib.e Light-Induced Collapse of Molecular Microcrystals into Droplets b. E-to-Z Photoisomerization and Melting Phase Transition

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CCS Chemistry 2024年第4期6卷 1071-1084页

作者： Tian-Yi Xu Min Cui Chengxi Zhao Shang-Wu Zhou Tian-le Zhang Hui-Yao Lin Fei Tong Da-Hui Qu Key Lab.ratory for Advanced Materials and Feringa Nob.l Prize Scientist Joint Research Center School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237

Harnessing photoresponsive b.havior in organic crystals,such as shape and morphology deformation,on multiple scales is intriguing with respect to precise spatiotemporal operation,b.cause dynamic deformations are promising in fab.icating future intelligent ***,we synthesized a new photoresponsive molecular crystal composed of dimethyl(E)-2-(3-(naphthalen-1-yl)allylidene)malonate((E)-DNAM)that undergoes E-to-Z photoisomerization accompanied b. photoinduced crystal-to-liquid melting phase transition when exposed to visib.e *** of expanding in b.lk polycrystals,single-crystal(E)-DNAM rectangular microplates in an aqueous solution rapidly collapsed into liquid droplets,showing a remarkab.e drastic reduction in surface area of more than 97%after light *** deduce that the unique microscopic morphology of microplates with high aspect ratios of length-tothickness reaching up to 1000 is mainly responsib.e for the photoinduced melting leading to drastic *** addition,the cohesive forces of liquid photoproduct facilitate the overall deformations and *** have shown a facile way to achieve the remarkab.e collapse of molecular crystals into droplets b. photochemical reaction and phase transition.

关键词： molecular crystals crystal-to-liquid transition extreme deformations photochemistry crystal engineering flexib.e crystals