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Separation of the ionospheric and thermospheric contributions in the data from the Triple Ionosophere Photo Meter onboard the Feng-Yun 3E satellite

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Science China Earth Sciences 2025年第1期68卷 172-184页

作者： Fang JIANG Tian MAO jin-Song WANG xiu-Qing HU Xiao-Xin ZHANG Liping FU Nan JIA Tianfang WANG National Space Science Center Chinese Academy of Sciences Beijing Key Laboratory of Space Environment Exploration Key Laboratory of Environmental Space Situation Awareness Technology National Satellite Meteorological Center China Meteorological Administration

The Triple Ionosphere Photo Meter （TRIPM） is a far ultraviolet nadir-view photometer that is onboard the secondgeneration,polar-orbiting Chinese meteorological satellite Feng-Yun 3E （FY-3E）,which was launched on July 5,*** has three channels,and each is used to measure different types of emissions:（1） 135.6 nm airglow produced by the recombination of the O+ions and electrons in the absence of sunlight （nighttime channel）;（2） 135.6 nm airglow from the OI when sunlight is present （daytime/dusk-dawn 135.6 nm channel）;and （3） Airglow in the N2LBH of the TRIPM （daytime/dusk-dawn N2LBH channel）.FY-3E is a satellite operating in the early morning ***,the data are mostly distributed on the dawndusk side or at times when the solar zenith angle is relatively *** this study,combined with simulation calculations,the data are *** further explore the application value of the data products,a model is used to separate the ionospheric radiative recombination contribution from the thermosphere photoelectron impact excitation contribution in the data from the daytime/dusk-dawn 135.6 nm *** approach not only improves the accuracy of O/N2derived from the 135.6 nm channel and N2LBH channel but also provides the ionospheric 135.6 nm radiance at the same time as the *** results show that the 135.6 nm radiance originating from the combination of O+and electrons extracted from the measurement data exhibits similar equatorial anomaly peak structure characteristics and seasonal variations as the corresponding GPS total electron content （TEC） *** the other hand,the separated 135.6 nm radiance generated from the thermosphere photoelectron collision excitation does not contain radiative recombination contributions;thus,the ionosphere influence is greatly avoided when the O/N2is obtained.

关键词： Far ultraviolet 135.6 nm emission intensity Photoelectron impact excitation Radiative recombination excitation

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Tuning the porosity of {Co12IICo8III（μ3-OH）24（X）}11+ supramolecular frameworks by reaction time for D2/H2 separation

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Science China Chemistry 2025年

作者： Zhuozhou Xie Zhu Zhuo Zi-Ang Nan Qing Li xiufang Li Zi-xiu Lu Linzhe Lü jin Liu Luyao Liu Wenjing Wang wei Wang Daqiang Yuan You-Gui Huang State Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences University of Chinese Academy of Sciences Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi InstitutesChinese Academy of Sciences State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical EngineeringXiamen University

Systematicly tuning the porosities of porous materials is crucial for targeted gas mixture separation,yet it remains a longstanding *** a common strategy,altering the phenylene ring count in the organic building units has been exploited to adjust pore apertures in metal organic frameworks （MOFs） and covalent organic frameworks （COFs）,resulting in only a stepwise pore size variation of approximately 2.8?.Unlike MOFs and COFs,the porosities for supramolecular assembly frameworks are highly dependent on the packings of the molecular building units in the *** above strategy cannot be applied to supramolecular assembly frameworks and other strategies are required to adjust pore apertures in supramolecular frameworks,especially to achieve porous materials with the optimal pore size for D2/H2separation （～3?）.Here,we successfully modulate the porosity of supramolecular frameworks of[CoII1+12CoIII8L12（μ3-OH）24（X）]1clusters （L=mono-deprotonated 1-iminoisoindole-3-amine,X=ClO?4or Cl?） by controlling the duration of self-assembly *** simply adjusting the reaction time,we obtain three[CoII12CoIII8L12（μ3-OH）24（X）]11+supramolecular frameworks:[CoII12CoIII8（μ3-OH）24（ClO4）L12)]·（Cl）4·（HCO2）7（1）,[CoII12CoIII8L12（μ3-OH）24（Cl）]·（ClOI4）4·（Cl）6·（HCO2）·（H2O）10（2）,and[CoI12CoIII8L12（μ3-OH）24（Cl）]·（Cl）11·（H2O）12（3）.The different stacking patterns of the[CoII12CoIII8L12（μ3-OH）24（X）]11+clusters in these frameworks lead to significantly varied stabilities and *** 1 exhibits permanent porosity with interconnected channels and maintains stability under harsh *** contrast,compound 2 is nearly nonporous,and compound 3 becomes unstable upon *** pores of compound 1 show higher affinity to D2than H2,and the pore aperture diameter of compound 1 （～3.06?） meets the optimal porosity for D2/***,compound 1 demonstrates moderate D2/H2separation at 77 K (retention time:～7 min/g for D2/H2/Ne （10/10/80 vol%） in a flow of 5 mL

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Effects of Ti-and Nb-based transition element from single to multiple compound oxides and carbon-based composite additives on Mg-MgH2 hydrogen storage material

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Tungsten 2025年第1期7卷 32-49页

作者： Li-Rong Xiao Chen Chen Shuo Wang Zi-Yin Dai Hideo Kimura Cui Ni Chuan-Xin Hou Xue-Qin Sun Si-Jie Guo wei Du xiu-Bo Xie School of Environmental and Material Engineering Yantai University Bosch HUAYU Steering Systems (Yantai) Co. Ltd.Ytp/MFE University of Tennessee Knoxville Shandong Key Laboratory of Eco-Environmental Science for the Yellow River Delta Shandong University of Aeronautics

MgH2is considered as a promising hydrogen storage material for its high hydrogen storage capacity,low cost and abundant resource ***,the low kinetics and high enthalpy formation of MgH2limit its wide *** the perspective of adding catalysts to enhance the hydrogen storage properties of Mg-MgH2,this article elaborated the main catalysts based on Ti and Nb transition elements,including single oxide catalysts,binary oxides catalysts（combined with Ni,Na,Sr,V,etc.）,multiple catalysts bound to carbon,and composite catalysts with Ti and Nb elements combined with MXene ***,the main pathways of various catalysts to reduce the reaction activity and broaden the hydrogen desorption channel were also *** Ti-based catalysts can enhance the reactive sites of the matrix by forming multivalent states,while Nb-based catalysts broaden the hydrogen reaction channels by forming tiny *** improving the size structure and enhancing the grain size stability,combined with carbon materials should be the future considerations.

关键词： Catalysts Mg-based hydrogen storage alloys Solid hydrogen storage Transition metal elements

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Comparative study of oxidation ability between boron-doped diamond (BDD) and lead oxide (PbO_2) electrodes

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International Journal of Minerals,Metallurgy and Materials 2011年第5期18卷 589-593页

作者： Jun-jun wei xiu-ping Zhu Fan-xiu L jin-ren Ni Department of Environmental Engineering Peking University Beijing 100871 China Department of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China

The electrochemical oxidation capabilities of two high-performance electrodes,the boron-doped diamond film on Ti （Ti/BDD） and the lead oxide film on Ti （Ti/PbO2）,were *** radicals （·HO） generated on the electrode surface were detected by using p-nitrosodimethylaniline （RNO） as the trapping *** oxidation measurements,including the chemical oxygen demand （COD） removal and the current efficiency （CE）,were carried out via the degradation of p-nitrophenol （PNP） under the galvanostatic *** results indicate that an indirect reaction,which is attributed to free hydroxyl radicals with high activation,conducts on the Ti/BDD electrode,while the absorbed hydroxyl radicals generated at the Ti/PbO2 surface results in low degradation *** to quick mineralization which combusts PNP to CO2 and H2O absolutely by the active hydroxyl radical directly,the CE obtained on the Ti/BDD electrode is much higher than that on the Ti/PbO2 electrode,notwithstanding the number of hydroxyl radicals produced on PbO2 is higher than that on the BDD surface.

关键词： thin films diamond films lead oxide born doping hydroxyl radicals chemical oxygen demand (COD) oxidation

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The Optimal Investment,Liability and Dividends in Insurance

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Journal of the Operations Research Society of China 2021年第2期9卷 395-409页

作者： Ping-jin Deng xiu-Fang Li Xiao-wei Chen School of Finance Collaborative Innovation Center for China EconomyNankai UniversityTianjin 300071China

In this paper,we build an optimal control model with the objective to maximize the expected value of the time discount utility by selecting optimal investment,liability and dividend strategies for insurance *** then use the techniques from Merton(J Econ Theory 3(4):373–413,1971)to solve our optimal control problem and deduce the optimal control ***,we analyze the economic impacts on the optimal controls of the parameters in insurance market.

关键词： Asset and liability management Optimal dividends HJB equation

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Comparative chloroplast genomes of Ulva prolifera and ***(Ulvophyceae)provide genetic resources for the development of interspecific markers

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Journal of Oceanology and Limnology 2022年第6期40卷 2372-2384页

作者： Wenzheng LIU Qianchun LIU jin ZHAO xiu wei Peng JIANG CAS and Shandong Province Key Laboratory of Experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China University of Chinese Academy of Sciences Beijing 100049China College of Life Science Qingdao UniversityQingdao 266071China

The green seaweeds Ulva linza and *** are closely related *** usually co-occur widely and have important ecological significance as primary producers thriving in the intertidal *** the Yellow Sea,a genetically unique floating ecotype of *** even bloomed to cause serious green ***,there is still a lack of appropriate molecular markers to distinguish these two species,partially due to limited evaluations on the intraspecific variations in *** among dif ferent *** organelle genomes could provide rich genetic resources for phylogenetic analysis and development of genetic markers,in this study,the chloroplast genome from one attached population of *** was completely sequenced,and comparative genomic analyses were performed with other existing chloroplast genomes from *** and the floating ecotype of *** results showed that in spite of the high level of collinearity among three genomes,there were plenty of genetic variations especially within the non-coding regions,including introns and gene spacer regions.A strategy was proposed that only those signals of variation,which were identical between two ecotypes of *** but divergent between *** and ***,were selected to develop the interspecific markers for *** and *** candidate markers,psa B and pet B,were shown to be able to distinguish these two closely related species and were applicable to more attached populations of *** from a wide range of geographical *** addition to the interspecific marker,this study would also provide resources for the development of intraspecific markers for *** markers might contribute to the surveys for Ulva species composition and green tide monitoring especially in the Yellow Sea region.

关键词： chloroplast genome comparative genomics intraspecifi c variation Ulva linza Ulva prolifera

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Hydroelastic Response of VLFS with An Attached Submerged Horizontal Solid/Porous Plate Under Wave Action

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China Ocean Engineering 2020年第4期34卷 451-462页

作者： FENG Ming-wei SUN Zhao-chen LIANG Shu-xiu LIU Bi-jin State Key Laboratory of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China School of Civil Engineering and Architecture Xiamen University of TechnologyXiamen 361024China

The hydroelastic responses of a submerged horizontal solid/porous plate attached at the front of a very large rectangular floating structure(VLFS)under wave action has been investigated in the context of linear water wave ***’s law is adopted to represent energy dissipation in *** is assumed that the porous plates are made of material with very fine pores so that the normal velocity across the perforated porous is linearly associated with the pressure *** the analytic method,the eigenfunction expansion-matching method(EEMM)for multiple domains is applied to solve the hydrodynamic problem and the elastic equation of motion is solved by the modal expansion *** performance of the proposed submerged horizontal solid/porous plate can be significantly enhanced by selecting optimal design parameters,such as plate length,horizontal position,submerged depth and *** is concluded that good damping effect can be achieved through installation of solid and porous *** plate has better damping effect at low frequencies,while solid plate has better damping effect at high *** optimal ratio of plate length to water depth is 0.25-0.375,and the optimal ratio of submerged depth to water depth is 0.09-0.181.

关键词： VLFS hydroelastic response Darcy’s law eigenfunction expansion-matching method submerged horizontal solid/porous plate

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强震区装配式和现浇地铁车站结构地震响应对比研究

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工程力学 2025年第1期42卷 164-173页

作者：江志伟杨秀仁李霞城市轨道交通绿色与安全建造技术国家工程研究中心北京100037 北京城建设计发展集团股份有限公司北京100037

以往的地下结构抗震研究大多是针对现浇结构开展的，而装配式结构由独立的预制构件拼装而成，从根本上区别于传统整体现浇结构，已有研究得到的认识对其适用性尚不明确，这极大地限制了装配式地下结构在强震区的推广与应用。该文以实际... 详细信息

以往的地下结构抗震研究大多是针对现浇结构开展的，而装配式结构由独立的预制构件拼装而成，从根本上区别于传统整体现浇结构，已有研究得到的认识对其适用性尚不明确，这极大地限制了装配式地下结构在强震区的推广与应用。该文以实际工程为背景，开展了全装配式和同型现浇车站结构的三维非线性有限元时程分析，对比了结构在八度区设防、罕遇和极罕遇地震下的变形、内力和损伤等响应。结果表明：装配式和现浇车站结构整体的地震变形差异不大，但柔性装配式车站结构榫槽节点可产生张开变形。设防和罕遇地震下，节点张开有利于结构减震，装配式车站结构的损伤小于现浇结构;而在极罕遇地震下，节点张开变大，榫槽、榫头和构件边缘的部分区域损伤集中，装配式和现浇结构地震响应产生了较大差异，但因应变幅值有限且损伤范围较小，此时全装配式与现浇车站结构整体的损伤程度基本相当。

关键词：装配式地铁车站结构地下结构抗震预制装配式地下结构装配式车站结构抗震结构地震损伤

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Observation of double pseudowaves in an ion-beam-plasma system

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Chinese Physics B 2018年第8期27卷 350-355页

作者： Zi-An wei jin-xiu Ma Kai-Yang Yi Department of Modern Physics and CAS Key Laboratory of Geospace Environment University of Science and Technology of ChinaHefei 230026China

Pseudowaves, known as burst-ion signals, which are different from plasma normal modes, exist frequently in ion- wave excitation experiments when launching the waves by applying a pulsed voltage to a negatively biased grid. In previous experiments, only one kind of the pseudowave was observed. In this paper, we report the observation and identification of double pseudowaves in an ion-beam-plasma system. These pseudowaves originate from two ion groups： the burst of the beam ions and the burst of the background ions. It was observed that the burst of the background ions was in the case of high ion beam energy, while the burst of the beam ions was in the case of low ion beam energy. By observing the dependence of the signal velocities on the characteristics of the excitation voltage, these pseudowaves can be identified. It was also observed that the burst ion signal originating from the background ions can interact with slow beam mode and that originating from the beam ions can interact with fast beam mode.

关键词： ion-beam-plasma system normal modes pseudowaves wave-particle interaction

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快中子诱发蛇纹石混凝土力学性能退化研究

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工程力学 2025年第1期42卷 32-43页

作者：陈凤娟高成琛金浏杜修力北京工业大学城市减灾与防灾防护教育部重点实验室北京100124

基于三维细观数值模拟方法，考虑快中子辐照(MeV>1.0)诱发的温度与骨料膨胀联合作用对混凝土力学行为及破坏形态的影响规律，该文提出了可有效预测辐照混凝土残余力学性能的二阶段数值模型计算方法，开展了蛇纹石骨料混凝土力学性能退... 详细信息

基于三维细观数值模拟方法，考虑快中子辐照(MeV>1.0)诱发的温度与骨料膨胀联合作用对混凝土力学行为及破坏形态的影响规律，该文提出了可有效预测辐照混凝土残余力学性能的二阶段数值模型计算方法，开展了蛇纹石骨料混凝土力学性能退化研究，并借助物理试验进行了模型验证。此外，基于数值模拟结果，提出了蛇纹石骨料膨胀作用下混凝土力学响应及残余力学性能的理论计算公式。该文提出的三维细观数值模型旨在为评估辐照混凝土力学响应及残余力学性能提供有效工具，为揭示辐照混凝土力学性能退化机理提供分析工具，为进行辐照混凝土基准研究提供理论依据，后期可为核反应堆混凝土防护墙延寿评估提供一定的理论指导。

关键词：快中子辐照诱导骨料膨胀力学性能三维细观数值模型蛇纹石骨料混凝土

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