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CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang Guo-cui Mao Hui-Lin Jiang Bao-Xia Dong Yun-Lei teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： Metal hydride Ni catalysts Carbonate Metal-carbonate interface

Machine learning driven rational design of dual atom catalysts on graphene for carbon dioxide electroreduction

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Nano Research 2025年第1期18卷 186-194页

作者： Dongxu jiao Xinyi Li Mingzi Sun Lin Liu Jinchang Fan Jingxiang Zhao Bolong Huang Xiaoqiang cui State Key Laboratory of Automotive Simulation and Control School of Materials Science and Engineeringand Key Laboratory of Automobile Materials of MOEJilin UniversityChangchun 130012China Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina College of Chemistry and Chemical Engineering and Key Laboratory of Photonic and Electronic Bandgap MaterialsMinistry of EducationHarbin Normal UniversityHarbin 150025China

The development of high-performance atomiccatalysts for the carbon dioxide reduction reaction(CO_(2)RR)is atime-consuming process due to the complexity of the reactionmechanism and the uncertainty of the active ***,wehave proposed combining density functional theory(DFT)andmachine learning(ML)to investigate the potential of topologicalgraphene-based dual-atom catalysts(DACs)as CO_(2)*** analyzing the ML results,we identify thenumber of d-orbital electrons in the active site as a key factorinfluencing the CO_(2)RR catalytic ***,wepropose a simple descriptor to measure the CO_(2)RR activity ofthese *** findings provide plausible explanations for thesynergistic interactions between bimetallic atoms in CO_(2)RR andallow us to screen the homogeneous Ni-Ni pair as the mostpromising dual-atom *** work offers a fast MLapproach based on limited DFT calculations to predict the mostelectroactive and stable DACs on carbon support for CO_(2)RR,facilitating rapid screening of high-performance dual-atomcatalysts.

关键词： CO_(2)reaction reduction dual-atom catalysts density functional theory machine learning

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叠氮硝胺发射药的贮存性能研究

火工品 2018年第3期 35-37页

作者：崔鹏腾焦旭英贾永杰石先锐胡睿西安近代化学研究所陕西西安710065

为研究叠氮硝胺发射药的贮存性能,采用热老化加速寿命试验预估发射药贮存寿命,通过理化性能试验、14.5mm机枪试验研究叠氮硝胺发射药长期贮存后的理化性能、内弹道性能。结果表明,采用热加速老化法预估叠氮硝胺发射药的安全存储寿命(常... 详细信息

为研究叠氮硝胺发射药的贮存性能,采用热老化加速寿命试验预估发射药贮存寿命,通过理化性能试验、14.5mm机枪试验研究叠氮硝胺发射药长期贮存后的理化性能、内弹道性能。结果表明,采用热加速老化法预估叠氮硝胺发射药的安全存储寿命(常温30℃)为63a,与普通双基吸收药相比,具有更好的安定性;长贮23a以上的叠氮硝胺发射药理化性能、安定性、内弹道性能稳定。研究表明叠氮硝胺发射药可以满足弹药装药长期贮存使用要求。

关键词：发射药叠氮硝胺贮存性能热分解

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中药复方对大鼠肾小球系膜细胞作用的影响

哈尔滨商业大学学报（自然科学版） 2018年第2期34卷 134-137页

作者：张翠张腾娇张思琪王丹枫孙博哈尔滨商业大学药学院哈尔滨150076

通过观察中药复方对大鼠肾小球系膜细胞(Ms C)的影响,从细胞水平探讨中药复方防治慢性肾功能衰竭(CRF)的作用.采用4甲基偶氮唑盐(MTT)比色法,观察中药复方对大鼠肾小球系膜细胞的影响.结果显示中药复方有抑制大鼠肾小球系膜细胞增殖的作... 详细信息

通过观察中药复方对大鼠肾小球系膜细胞(Ms C)的影响,从细胞水平探讨中药复方防治慢性肾功能衰竭(CRF)的作用.采用4甲基偶氮唑盐(MTT)比色法,观察中药复方对大鼠肾小球系膜细胞的影响.结果显示中药复方有抑制大鼠肾小球系膜细胞增殖的作用,其中抑制率与药物浓度和作用时间有一定的量效关系.中药复方对体外培养的大鼠肾小球系膜细胞增殖有明显的抑制作用,其抑制率与血清中的药物浓度、时间呈正相关.中药复方抑制肾小球系膜细胞增殖是预防肾小球硬化发生发展的重要机制之一.

关键词：腎小球系膜细胞中药复方细胞培养作用影响

A new horizon for neuroscience:terahertz biotechnology in brain research

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Neural Regeneration Research 2025年第2期20卷 309-325页

作者： Zhengping Pu Yu Wu Zhongjie Zhu Hongwei Zhao Donghong cui Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Psychiatry Kangci Hospital of JiaxingTongxiangZhejiang ProvinceChina Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghaiChina Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied PhysicsChinese Academy of ScienceShanghaiChina National Facility for Protein Science in Shanghai Shanghai Advanced Research InstituteChinese Academy of SciencesShanghaiChina

Terahertz biotechnology has been increasingly applied in various biomedical fields and has especially shown great potential for application in brain *** this article,we review the development of terahertz biotechnology and its applications in the field of *** evidence indicates promising prospects for the use of terahertz spectroscopy and terahertz imaging techniques in the diagnosis of amyloid disease,cerebrovascular disease,glioma,psychiatric disease,traumatic brain injury,and myelin *** vitro and animal experiments have also demonstrated the potential therapeutic value of terahertz technology in some neuropsychiatric *** the precise underlying mechanism of the interactions between terahertz electromagnetic waves and the biosystem is not yet fully understood,the research progress in this field shows great potential for biomedical noninvasive diagnostic and therapeutic ***,the biosafety of terahertz radiation requires further exploration regarding its two-sided efficacy in practical *** review demonstrates that terahertz biotechnology has the potential to be a promising method in the field of neuropsychiatry based on its unique advantages.

关键词： biological effect brain neuron neuropsychiatry neuroscience non-thermal effect terahertz imaging terahertz radiation terahertz spectroscopy terahertz technology

EVM simulation and analysis in digital transmitter

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The Journal of China Universities of Posts and Telecommunications 2009年第6期16卷 43-48页

作者： TAN Xiao-heng LI teng-jiao College of Communication Engineering Chongqing University Chongqing 400044 China

The error vector magnitude（EVM） is extensively applied as a metric for digital transmitter signal quality compliance in modern communication *** article is focused on the effects of local oscillator（LO） phase noise and nonlinear distortion of power amplifier on *** article contributes to below ***,the relationships between EVM and two effects,LO phase noise and nonlinear distortion of power amplifier,are derived and ***,to simplify the expression,the third-order intermodulation distortion（IMD3） is used to calculate the ***,an expression for the EVM is derived based on the digital transmitter model that considers local oscillator phase noise and nonlinear distortion of power ***,the math formula of bit error rate（BER） versus EVM is given which can be easier and more useful to predict BER,according to analysis of the relationship between EVM and signal to noise rate（SNR）,inspired by the works of Rishad,*** and AHM,*** are carried out to display the performance of EVM based on these relationships.

关键词： power amplifiers EVM phase noise nonlinear distortion IMD3

Design and implementation of labor arbitration system based on blockchain

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The Journal of China Universities of Posts and Telecommunications 2021年第5期28卷 36-45页

作者： cui Hongyan Cai Ziyin teng Shaokai State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China Rizhao Lanshan District Federation of Trade Unions Kizhao 276800China

Data island and information opacity are two major problems in collaborative administration. Blockchain has the potential to provide a trustable and transparent environment encouraging data sharing among administration members. However, the blockchain only stores Hash values and transactions in blocks which makes it unable to store big data and trace their changes. In this paper, a labor arbitration scheme based on blockchain was proposed to share labor arbitration data. In the system, a collaborative administration scheme that provides a big data storage model combined blockchain and interplanetary file system(IPFS) is designed. It can store big data and share these data among different parties. Moreover, a file version control mechanism based on blockchain is designed to manage the data changes in IPFS network. It creates a tracing chain that consists of many IPFS objects to track changes of stored data. The relationship of previous and current IPFS objects recorded by blockchain can describe the changes of administration data and trace the data operations. The proposed platform is used in Rizhao City in China, and the experiment result shows collaborative administration scheme achieves traceability with high throughput and is more efficient than traditional hypertext transfer protocol(HTTP) way to share data.

关键词： blockchain interplanetary file system(IPFS) data sharing tracing version control

Characterization of Electric Field Distribution Within High Voltage Press-packed IGBT Submodules Under Conditions of Repetitive Turn-on and Turn-off

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CSEE Journal of Power and Energy Systems 2022年第2期8卷 609-620页

作者： teng Wen Xiang cui Sijia Liu Xuebao Li Zhibin Zhao State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China

The high-voltage high-power press-packed IGBT(PPI)devices are the key component of the DC transmission apparatus.A PPI device is composed of several PPI *** general,the PPI submodule works in a state of repetitive turn-on and turn-off,and the corresponding working voltage is the positive periodic square waveform(PPSW)voltage,which is much different from the conventional AC or DC *** addition,insulation capability is one of the most critical challenges in the design and fabrication of PPI *** improve the insulation capability of the device,composite insulation structures with multiple dielectrics are usually *** the PPSW voltage,it is essential to analyze the transient electric field to solve the insulation challenge of the PPI ***,the electric field of the PPI is often calculated under the electrostatic field or DC ***,the transient characteristics of the electric field are ***,this paper focuses on the analysis of the transient characteristics of the electric field of the PPI submodule under the PPSW *** influences of the waveform parameters of the PPSW voltage on the transient characteristics are demonstrated in *** study is significant for the insulation analysis and design of the PPIs.

关键词： Electroquasistatic field FEM IGBT positive periodic square waveform voltage transient electric field

Time-domain Finite Element Method for Transient Electric Field and Transient Charge Density on Dielectric Interface

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CSEE Journal of Power and Energy Systems 2022年第1期8卷 143-154页

作者： teng Wen Xiang cui Xuebao Li Hao Ma Zhibin Zhao State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China

This paper is devoted to solving the transient electric field and transient charge density on the dielectric interface under the electroquasistatic(EQS)field conditions with high *** proposed method is suitable for both 2-D and 3-D ***,the governing equations represented by scalar electric potential are discretized by the nodal finite element method(FEM)in space and the finite difference method in ***,the transient constrained electric field equation on the boundary(TCEFEB)is derived to calculate the normal component of the transient electric field intensities on the Dirichlet boundary and dielectric interface as well as the transient charge density on the dielectric ***,a 2-D numerical example is employed to demonstrate the validity of the proposed ***,the comparisons of the numerical accuracy of the proposed method in this paper with the existing FEMs for electric field intensity and charge density on the dielectric interface are *** results show that the numerical accuracy of the proposed method for calculating the normal component of transient electric field intensities on the Dirichlet boundary and dielectric interface as well as the transient charge density on the dielectric interface is close to that of nodal electric potential and an order of magnitude higher than those of existing FEMs.

关键词： Electroquasistatic field composite insulation structure transient constrained electric field equation on the boundary finite element method interface charge time-domain