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Hollow-structured all-silico. terahertz metasurface supporting quasi-bound states in the co.tinuum for refractive index based Auramine O co.centration sensing

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Photonics Research 2024年第7期12卷 1574-1582页

作者： XIN TANG HAODUO JIA LANBIN LI MING LI DAI WU KUI ZHOU PENG LI WEIJUN WANG JITAO LI DINGYU YANG co.lege of Optoelectronic Engineering Chengdu University of Information TechnologyChengdu 610225China Institute of Applied Electronics China Academy of Engineering PhysicsMianyang 621000China School of Precision Instruments and Opto-Electronics Engineering Tianjin UniversityTianjin 300072China guizhou Zhenhua Fengguang Semico.ductor co. Ltd.Guiyang 550000China Chengdu Huanyuxin Technology co. Ltd.Chengdu 610095China

Quasi-bound states in the co.tinuum (QBIC),with exceptionally high-Q factors and the local field enhancement effect,have found potential applications in matter *** the QBIC mechanism into terahertz(THz) metasurfaces can significantly enhance the interaction between incident THz waves and matter,providing a feasible platform for the detection of biochemical ***,most experimental studies on terahertz QBIC metasurfaces utilize metallic *** co.trast,research on terahertz all-dielectric QBIC metasurfaces generally remains at the simulation stage due to the high fabrication process requirements,and transitioning to the experimental stage still poses many *** this paper,a hollow-structured all-silico. metasurface supporting THz QBIC is *** resonance of THz QBIC is excited via a simple hollow structure and observed in *** and experimental results demonstrated that the designed THz QBIC metasurface can achieve sensing of Auramine ***,it is the first study,to our knowledge,to employ a metasurface to sense Auramine ***,the sensing performance maintains good stability under different humidity and temperature *** study provides new references and insights for the design and implementation of THz QBIC,and also opens a new pathway for the detection of Auramine O.

关键词： supporting co.tinuum refractive

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Application of Sargassum fusiforme(Harv.)*** in Cigarettes

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Agricultural Biotechnology 2024年第1期13卷 49-50,65页

作者： Juanjuan LI Jing SHAN Xianyan RAO Lina MA Weichuan WANG Mingyue ZHAO Youchi HU china tobacco Guangdong industrial co. Ltd.Guangzhou 510385China Zhengzhou tobacco Research Institute of CNTC Zhengzhou 450001China

[Objectives]This study was co.ducted to investigate the application of Sargassum fusiforme(Harv.)*** cigarettes.[Methods]tobacco-specific nitrosamines in the smoke of cigarettes added with ethanol extract of *** were determined,and the co.pounds related to the aroma of *** were identified by flavor-smelling experiment.[Results]With the addition of the ethanol extract of ***,the decrease in the total amount of four tobacco-specific nitrosamines in mainstream cigarette smoke reached 16.42%.The results of the flavor-smelling experiment showed that the aroma of *** might be related to(R)-5,6,7,7A-tetrahydro-4,4,7A-trimethyl-2(4H)-benzofuranone,glycerol,ethyl palmitate,methyl palmitate,ethyl linoleate,methyl(Z,Z,Z)-9,12,15-octadecatrienoate,ethyl(Z,Z,Z)-9,12,15-octadecatrienoate,phytol,and tetradecanoic acid.[co.clusions]The ethanol extract of *** has the potential function of reducing the co.tent of tobacco-specific nitrosamines in smoke and improving the taste of cigarettes.

关键词： Sargassum fusiforme(Harv.)Setch. tobacco-specific nitrosamines(TSNAs) Flavor smelling

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Unlocking high-efficiency oxygen evolution reaction through co.N co.rdination engineering in co.N-doped porous carbon co.e–shell nanoparticles

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Nano Research 2024年第8期17卷 7068-7076页

作者： Shucheng Liu Yu Shuai Xiaosi Qi Zhao Ding Yi Liu co.lege of Big Data and Information Engineering Guizhou UniversityGuiyang 550025China co.lege of Physics Guizhou Province Key Laboratory for Photoelectrics Technology and ApplicationGuizhou UniversityGuiyang 550025China

Modulation of metal sites co.rdination can significantly refine the electronic architecture of catalysts,thereby improving their catalytic *** work successfully developed a co.e–shell co.N-doped porous carbon(co.NC)catalyst by pyrolyzing the co./MOF(IISERP-co.3/ZIF-67)co.posite in an inert *** co.NC catalyst exhibited impressive oxygen evolution reaction(OER)performance,with a small overpotential of 304 mV and a modest Tafel slope of 88.6 mV·dec^(−1) in a 1 M KOH,alongside remarkable stability,maintaining 98.5%of its activity over 13 *** role of IISERP-co.3 was pivotal in preventing co.atom aggregation during the ZIF-67 pyrolysis,which facilitated the creation of mesopores for enhanced mass transport and ***,it effectively modulated the co.N co.rdination to fine-tune the electronic structure,thereby optimizing the catalyst's capacity for adsorption of intermediates and boosting its intrinsic *** functional theory(DFT)studies co.roborate that the exceptional OER efficiency of co.NC can be linked to the enhanced co.N co.rdination,optimizing the localized electronic structure at the co.active *** study not only proposes an innovative approach for optimizing co./MOF as effective electrocatalysts but also clears the path for the emergence of affordable,high-performance alternatives to precious metal-based catalysts,marking a significant advancement in sustainable energy technologies.

关键词： co.alent organic framework(co.) metal-organic framework(MOF) co.e-shell structure catalysts oxygen evolution reaction

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Runout prediction of potential landslides based on the multi-source data co.laboration analysis on historical cases

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china Geology 2024年第2期7卷 264-276页

作者： Jun Sun Yu Zhuang Ai-guo Xing guizhou Geology and Mineral Engineering co.struction co. LtdGuiyang 550000China State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Long runout landslides involve a massive amount of energy and can be extremely hazardous owing to their long movement distance,high mobility and strong destructive *** methods have been widely used to predict the landslide runout but a fundamental problem remained is how to determine the reliable numerical *** study proposes a framework to predict the runout of potential landslides through multi-source data co.laboration and numerical analysis of historical landslide ***,for the historical landslide cases,the landslide-induced seismic signal,geophysical surveys,and possible in-situ drone/phone videos(multi-source data co.laboration)can validate the numerical results in terms of landslide dynamics and deposit features and help calibrate the numerical(rheological)***,the calibrated numerical parameters can be used to numerically predict the runout of potential landslides in the region with a similar geological setting to the reco.ded *** of the runout prediction approach to the 2020 Jiashanying landslide in guizhou,china gives reasonable results in co.parison to the field *** numerical parameters are determined from the multi-source data co.laboration analysis of a historical case in the region(2019 Shuicheng landslide).The proposed framework for landslide runout prediction can be of great utility for landslide risk assessment and disaster reduction in mountainous regions worldwide.

关键词： Landslide runout prediction Drone survey Multi-source data co.laboration DAN3D numerical modeling Jianshanying landslide guizhou Province Geological hazards survey engineering

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Simultaneously achieving high energy density and responsivity in submicron BaTiO_(3) film capacitors integrated on Si

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Journal of Advanced Ceramics 2024年第2期13卷 198-206页

作者： Jun Ouyang Yinxiu Xue Chuanqi Song Meiling Yuan Kun Wang Yuyao Zhao Hongbo Cheng Hanfei Zhu Chao Liu Institute of Advanced Energy Materials and Chemistry School of Chemistry and Chemical EngineeringQilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Key Laboratory of Key Film Materials&Application for Equipment School of Material Sciences and EngineeringXiangtan UniversityXiangtan 411105China School of Materials Science and Engineering Shandong UniversityJinan 250061China Academic Affairs Office Civil Aviation University of ChinaTianjin 300300China china tobacco Shandong industrial co. Ltd.Jinan 250014China

In the research field of energy storage dielectrics,the“responsivity”parameter,defined as the recyclable/reco.erable energy density per unit electric field,has beco.e critically important for a co.prehensive evaluation of the energy storage capability of a *** this work,high recyclable energy density and responsivity,i.e.,W_(rec)=161.1 J·cm^(-3) and ξ=373.8 J·(kV·m^(2))^(-1),have been simultaneously achieved in a prototype perovskite dielectric,BaTiO_(3),which is integrated on Si at 500℃ in the form of a submicron thick *** ferroelectric film features a multi-scale polar structure co.sisting of ferroelectric grains with different orientations and inner-grain ferroelastic domains.A LaNiO_(3) buffer layer is used to induce a{001}textured,co.umnar nanograin microstructure,while an elevated deposition temperature promotes lateral growth of the nanograins(in-plane diameter increases from~10-20 nm at lower temperatures to~30 nm).These preferably oriented and periodically regulated nanograins have resulted in a small remnant polarization and a delayed polarization saturation in the film’s P-E behavior,leading to a high recyclable energy ***,an improved polarizability/dielectric co.stant of the BaTiO_(3) film has produced a much larger maximum polarization than those deposited at lower temperatures at the same electric field,leading to a reco.d-breaking responsivity for this simple perovskite.

关键词： energy storage energy density responsivity BaTiO_(3) dielectric capacitor Si

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Metal size effects over metal/zeolite bifunctional catalysts in the selective hydroalkylation of benzene

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Frontiers of Chemical Science and Engineering 2024年第4期18卷 107-114页

作者： Junjie Li Chuang Liu Zhenlong Jia Yingchun Ye Dawei Lan Wei Meng Jianqiang Wang Zhendong Wang Yongfeng Hu Weimin Yang State Key Laboratory of Green Chemical Engineering and industrial Catalysis Sinopec Shanghai Research Institute of Petrochemical Technology Co.Ltd.Shanghai 201208China School of Chemical Engineering East China University of Science and TechnologyShanghai 200237China

Bifunctional metal/zeolite materials are some of the most suitable catalysts for the direct hydroalkylation of benzene to *** overall catalytic performance of this reaction is strongly influenced by the hydrogenation,which is dependent on the metal ***,systematically investigating the metal size effects in the hydroalkylation of benzene is *** this work,we successfully synthesized Ru and Pd nanoparticles on Sinopec co.position Materials No.1 zeolite with various metal *** demonstrated the size-dependent catalytic activity of zeolite-supported Ru and Pd catalysts in the hydroalkylation of benzene,which can be attributed to the size-induced hydrogen spillover capability *** work presents new insights into the hydroalkylation reaction and may open up a new avenue for the smart design of advanced metal/zeolite bi-functional catalysts.

关键词： size effects bifunctional catalysts metal/zeolite hydroalkylation

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Machine learning for fault diagnosis of high-speed train traction systems: A review

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Frontiers of Engineering Management 2024年第1期11卷 62-78页

作者： Huan WANG Yan-Fu LI Jianliang REN Department of industrial Engineering Tsinghua UniversityBeijing 100084China Zhibo Lucchini Railway Equipment co. Ltd.Taiyuan 030032China

High-speed trains(HSTs)have the advantages of co.fort,efficiency,and co.venience and have gradually beco.e the mainstream means of *** the operating scale of HSTs co.tinues to increase,ensuring their safety and reliability has beco.e more *** the co.e co.ponent of HST,the reliability of the traction system has a substantially influence on the *** the long-term operation of HSTs,the co.e co.ponents of the traction system will inevitably experience different degrees of performance degradation and cause various failures,thus threatening the running safety of the ***,performing fault monitoring and diagnosis on the traction system of the HST is *** recent years,machine learning has been widely used in various pattern reco.nition tasks and has demonstrated an excellent performance in traction system fault *** learning has made co.siderably advancements in traction system fault diagnosis;however,a co.prehensive systematic review is still lacking in this *** paper primarily aims to review the research and application of machine learning in the field of traction system fault diagnosis and assumes the future development ***,the structure and function of the HST traction system are briefly ***,the research and application of machine learning in traction system fault diagnosis are co.prehensively and systematically ***,the challenges for accurate fault diagnosis under actual operating co.ditions are revealed,and the future research trends of machine learning in traction systems are discussed.

关键词： high-speed train traction systems machine learning fault diagnosis

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Electronegativity-assisted optimized electronic structure of functionalized-Pt catalysts for boosting oxygen reduction kinetics

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Rare Metals 2024年第5期43卷 1965-1976页

作者： Jin Long Kai-Wen Zhuang Wei Liao Yan An Bin Wang Chen-Zhong Wu Jian-Xin Cao Qing Wang Jun-Song Chen Qing-Mei Wang guizhou University Key Laboratory of Green Chemical and Clean Energy Technology School of Chemistry and Chemical EngineeringGuizhou UniversityGuiyang 550025China guizhou University Engineering Research Center of Effcient Utilization for industrial Waste Guizhou UniversityGuiyang 550025China Institute of Dual-Carbon and New Energy Technology Innovation and Development of guizhou Province Guiyang 550025China Department of Dermatology West China HospitalSichuan UniversityChengdu610041China Institute for Catalysis Hokkaido UniversitySapporo 001-0021Japan School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China Interdisciplinary Materials Research Center Institute for Advanced StudyChengdu UniversityChengdu 610106China

Opportunity to harmonize aspects of oxygen reduction reaction(ORR)performance and structure,and morphology,as well as co.position,is urgent for the co.mercialization of proton exchange membrane fuel ***,we demonstrate the design and synthesis of a functionalized-supported-Pt catalyst(Pt@HNC)featuring a hollow nitrogen-modified dodecahedral carbon substrate obtained by a stress-induced-shrink tailoring *** as-obtained Pt@HNC catalyst possesses enhanced ORR per-formance,in particular with half-wave potential,mass activity(MA)and specific activity,which greatly exceed the co.mercial Pt/*** density functional theory(DFT)calculations further co.firmed that the charge redistribution induced by the electronegativity differences improved the electron interaction between Pt and HNC *** optimized electronic structure of Pt weakens the reaction energy barrier on the Pt@HNC surface and adsorption of^(*)OH species,thus co.peratively improving the intrinsic activity toward ***,our work indeed provides a guide for the future design of functional nanomaterials in the field of catalysts and clean energy.

关键词： Proton exchange membrane fuel cell(PEMFC) Oxygen reduction catalysis Supported Pt-based catalyst Stability

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Transcriptome and proteome analysis reveals the characteristics of carbon metabolism in the mycelial development of Gomphus purpuraceus

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Food Science and Human Wellness 2024年

作者： Yangyang Geng Shixin Zhang Yana Liu Likang Qin School of Liquor and Food Engineering， guizhou University guizhou Institute of Walnut Key Laboratory of Plant Resource co.servation and Germplasm Innovation in Mountainous Region (Ministry of Education)， co.lege of Life Sciences/Institute of Agro-bioengineering， guizhou University guizhou Academy of Forestry guizhou industrial Technology Research Institute of Rare Edible and Medicinal Fungi co.， Ltd

Gomphus purpuraceus is an ancient wild edible mushroom. However， the niche and lignocellulose degradation system of G. purpuraceus have remained cryptic. In the current study， transcriptome and proteome sequencing of G. purpuraceus in four mediums was performed. A total of 3489 differentially expressed genes (DEGs) and 891 differentially expressed proteins (DEPs) were screened out. For the lignocellulose degradation system， a total of 61 expressed genes were annotated， including 19 genes enco.ing cellulase， 8 genes enco.ing hemicellulase， 5 genes enco.ing pectinase， 22 genes enco.ing lignin oxidase， and 7 lignin degrading auxiliary enzyme. From two-omics， morphology， and enzyme activities， we speculated that G. purpuraceus might have a limited capacity to degrade polysaccharides (starch and lignocellulose). In addition， trace amount of fumonisins (FB1 and FB2) were found in the G. purpuraceus. These results provided a new perspective for understanding the key pathways and hub genes involved in carbon metabolism of G. purpuraceus development.

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Improving the electrocatalytic performances of Pt-based catalysts for oxygen reduction reaction via strong interactions with single-co._(4)-rich carbon support

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Chinese Chemical Letters 2024年第5期35卷 265-271页

作者： Jin Long Xingqun Zheng Bin Wang Chenzhong Wu Qingmei Wang Lishan Peng guizhou University Key Laboratory of Green Chemical and Clean Energy Technology Guizhou University Engineering Research Center of Efficient Utilization for Industrial WasteInstitute of Dual-carbon and New Energy Technology Innovation and Development of Guizhou ProvinceSchool of Chemistry and Chemical EngineeringGuizhou UniversityGuiyang 550025China co.lege of Safety Engineering Chongqing University of Science&TechnologyChongqing 401331China Key Laboratory of Rare Earths Chinese Academy of SciencesGanjiang Innovation AcademyGanzhou 341119China

Developing platinum-group-metal(PGM)catalysts possessing strong metal-support interaction and co.trollable PGM size is urgent for the sluggish oxygen reduction reaction(ORR)in proton-exchange membrane fuel ***,we propose an in-situ self-assembled reduction strategy to successfully induce highly-dispersed sub-3nm platinum nanoparticles(Pt NPs)to attach on resin-derived atomic co.co.rdinated by N-doped carbon substrate(Pt/co.(SA)-N-C)for *** be specific,the interfacial electron interaction effect,along with a highly robust co.(SA)-N-C support endow the as-fabricated Pt/co.(SA)-N-C catalyst with significantly enhanced catalytic properties,i.e.,a mass activity(MA)of 0.719 A/mgPt at 0.9 ViR-free and a reduction of 24.2%in MA after a 20,000-cycles *** functional theory(DFT)calculations demonstrate that the enhanced electron interaction between Pt and co.(SA)-N-C support decreases the dband center of Pt,which is in favor of lowering the desorption energy of ^(*)OH on Pt/co.(SA)-N-C surface and accelerating the formation of H_(2)O,thus enhance the instinct activity of ***,the higher binding energy between Pt and co.(SA)-N-C co.pared to Pt and C indicates that the migration of Pt has been suppressed,which theoretically explains the improved durability of Pt/co.(SA)-*** work offers an enlightenment on co.structing co.posite Pt-based catalysts with multiple active sites.

关键词： Fuel cells Oxygen reduction reaction Platinum Single-co._(4)-rich carbon support Metal-substrate interaction

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