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Chemical Research in Chinese univ.rsities 2025年第1期41卷 33-39页

作者： WANG Yaxin CHEN Yulan Key Laboratory of Organic Integrated Circuit Ministry of Education&Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistrySchool of ScienceTianjin UniversityTianjin300072P.R.China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun130012P.R.China

We design and synthesize five novel diazocine derivatives,using diazocine as the core,amide or imine bonds as the connecting units attached with different peripheral *** photoisomerization yield and thermal stability of these derivatives are tested by^(1)H NMR and UV-Vis absorption *** them,the imine-linked derivative exhibits the lowest photoisomerization efficiency,while the amide-linked ones show an elevated switching efficiency in transitioning from the cis to the trans configuration,compared to the unmodified 3,3′-***,based on experiments together with density functional theory(DFT)calculations,we find that the thermal stability of these derivatives is associated with the electron cloud density and steric hindrance of their *** to these unique photophysical properties,diazocine derivatives provide a foundation for the development and application of molecular optical switches.

关键词： Diazocine Photoisomerization Thermal stability

Austenite－bainite　Medium　Mn　Steel　with　Nodular　Carbide　Modified　by　La　Compound

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Journal of Rare Earths 1995年第4期13卷 277-280页

作者：许振明姜启川赵宇光何镇明 jilin univ.of Technology Jilin China

A new wear-resistant austenite-bainite medium Mn steel with nodular carbide can be obtained by modifying with La compound. The result shows that the equiaxed crystals are refined, and their quantity is increased after the treatment. The nodular carbide in fact is eutectic of austenite and (Fe . Mn)3 C is formed during solidification between austenitic dendrites. When the eutectic grows, the small melting pools between equiaxed crystals limit it's growing. Lanthanum species, are absorbed on eutectic growth interface, controlling eutectic growing.

关键词： La Nodulizing of carbide Austenite-bainite steel

REGULARITY PROPERTIES OF AN IDENTIFICATION PROBLEM FOR GEOTHERMAL RESERVIOR EXPLOITATION

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Acta Mathematica Scientia 1992年第1期12卷 1-6页

作者：戴淑环 Dept. of Math. Jilin Univ. Changchun 130023 China

The problem of determining the pass on heat coefficient of the water-bearing stratum in geothermal reservior exploitation is investigated using the regularised output-least-square formulation. The regularity propertie... 详细信息

关键词： REGULARITY PROPERTIES OF AN IDENTIFICATION PROBLEM FOR GEOTHERMAL RESERVIOR EXPLOITATION der

Modeling and control of a rigid-flexible coupling robot for narrow space manipulations

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Science China(Technological Sciences) 2025年第2期68卷 136-152页

作者： Kuangda CHEN Huan ZHAO Jiexin ZHANG Mei FENG Yiwei WANG Jinliang WANG Han DING State Key Laboratory of Intelligent Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074China Key Laboratory of CNC Equipment Reliability Ministry of EducationJilin UniversityChangchun 130021China School of Medical Equipment Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China

Narrow space manipulations are crucial for equipment maintenance,as they eliminate the need for disassembly,thus reducing costs and increasing ***-driven flexible robots possess exceptional capabilities in maneuvering through narrow spaces,thanks to their interaction compliance and distal ***,their inherent low stiffness causes a decline in the location accuracy of the robot and could even lead to manipulation *** address this challenge,this paper proposes a novel type of rigid-flexible coupling robot,which increases the stiffness of the robot while ensuring the reachability within a narrow *** achieve high-accuracy location in a narrow space,kinematic and control methods are ***,the robot forward kinematics are uniformly represented,and the closed-form inverse kinematics solution is ***,in cases where the robot's structure fails to align with Pieper's solution,a two-stage search strategy is utilized to solve the inverse kinematics,resulting in a high success rate of 99.1%.Based on the proposed kinematics,a rigid-dominated control method is then proposed to facilitate localization and pose alignment of target objects in narrow *** practical comparative experiments show that the proposed robot has the capability of high accuracy control in narrow spaces.

关键词： narrow space manipulation rigid-flexible coupling robot kinematics rigid-dominated control

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A Simulation Model for Mixing Traffic Flow at An Intersection

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Journal of Systems Engineering and Electronics 1996年第3期7卷 63-68页

作者： Juan Zhicai Chen Ling & Zhang Jie(jilin univ. of Technology P.R. China) jilin univ. of Technology P.R. China

This paper will develop a model simulation mixing traffic flow in the signal controlintersection. Applying the model, the schemes of traffic channeling and controlling in the typical intersection are analyzed and optimized and the optimal scheme make the average stop frequency be reduced by 31.8% and average stop time be reduced by 27.7%.

关键词： Traffic flow Simulation model.

Novel Low-Carbon Optimal Operation Method for Flexible Distribution Network Based on Carbon Emission Flow

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Energy Engineering 2025年第2期122卷 785-803页

作者： Chao Gao Kai Niu Wenjing Chen Changwei Wang Yabin Chen Rui Qu Guangdong-Hong Kong-Macao Greater Bay Area Construction Promotion Office of Guangdong Power Grid Co. Ltd.Guangzhou510030China School of Electrical Engineering Northeast Electric Power UniversityJilin132012China School of Electrical Engineering Fuzhou UniversityFuzhou350116China

With the widespread implementation of distributed generation(DG)and the integration of soft open point(SOP)into the distribution network(DN),the latter is steadily transitioning into a flexible distribution network(FDN),the calculation of carbon flow distribution in FDN is more *** this end,this study constructs a model for low-carbon optimal operations within the FDN on the basis of enhanced carbon emission flow(CEF).First,the carbon emission characteristics of FDNs are scrutinized and an improved method for calculating carbon flow within these networks is ***,a model for optimizing low-carbon operations within FDNs is formulated based on the refined CEF,which merges the specificities of DG and intelligent ***,this model is scrutinized using an upgraded IEEE 33-node distribution system,a comparative analysis of the cases reveals that when DG and SOP are operated in a coordinated manner in the FDN,with the cost of electricity generation was reduced by 40.63 percent and the cost of carbon emissions by 10.18 *** findings indicate that the judicious optimization of areas exhibiting higher carbon flow rates can effectively enhance the economic efficiency of DN operations and curtail the carbon emissions of the overall network.

关键词： Flexible distribution network carbon emission flow distributed generation soft open points

Microstructure and magnetic properties of FeCoZr(Mo)BGe nanocrystalline alloys

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Chinese Physics B 2025年第1期34卷 407-412页

作者： Wanqiu Yu Yanxiang Sun Lihua Liu Pingli Zhang College of Physics Jilin Normal UniversitySiping 136000China Chengxi Power Supply Company State Grid Tianjin Electric Power CompanyTianjin 300190China

The microstructure and magnetic properties of Fe40Co40Zr9B10Ge1(Mo-free)and Fe_(40)Co_(40)Zr_(5)Mo_(4)B_(10)Ge1(Mocontaining)nanocrystalline alloys,prepared using an amorphous crystallization method,were *** addition affects the crystallization of the Fe_(40)Co_(40)Zr_(9)B_(10)Ge1amorphous alloy and decreases the grain size of theα-Fe(Co)phase below 650°*** the Mo-free alloy annealed at 600°C and the Mo-containing alloy annealed at 575°C,with a singleα-Fe(Co)crystallization phase and approximately similar crystallization volume fractions,the Mo-containing alloy showed smaller,more regularly shaped grains and a significantly narrower grain-size distribution than the Mo-free *** Fe and Co contents in the nanograins of the two alloys also *** the Mo-free alloy,a higher concentration of Co distributed in the residual amorphous *** the Mo-containing alloy,a higher concentration Co dissolved in the *** specific saturation magnetization and coercivity of the Mo-free alloy were 1.05-and 1.59-times higher than those of the Mo-containing alloy,respectively.

关键词： nanostructured materials Mo addition microstructure grain size

Investigating Black-Box Model for Wind Power Forecasting Using Local Interpretable Model-Agnostic Explanations Algorithm

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CSEE Journal of Power and Energy Systems 2025年第1期11卷 227-242页

作者： Mao Yang Chuanyu Xu Yuying Bai Miaomiao Ma Xin Su Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Ministry of EducationNortheast Electric Power UniversityJilin132012China Daqing Power Industry Bureau Daqing 163000China

Wind power forecasting(WPF)is important for safe,stable,and reliable integration of new energy technologies into power *** learning(ML)algorithms have recently attracted increasing attention in the field of ***,opaque decisions and lack of trustworthiness of black-box models for WPF could cause scheduling *** study develops a method for identifying risky models in practical applications and avoiding the ***,a local interpretable model-agnostic explanations algorithm is introduced and improved for WPF model *** that basis,a novel index is presented to quantify the level at which neural networks or other black-box models can trust features involved in ***,by revealing the operational mechanism for local samples,human interpretability of the black-box model is examined under different accuracies,time horizons,and *** interpretability provides a basis for several technical routes for WPF from the viewpoint of the forecasting ***,further improvements in accuracy of WPF are explored by evaluating possibilities of using interpretable ML models that use multi-horizons global trust modeling and multi-seasons interpretable feature selection *** results from a wind farm in China show that error can be robustly reduced.

关键词： Black-box model correlation analysis feature trust index local interpretability local interpretable modelagnostic explanations(LIME) wind power forecasting

Interfacial interactions of Cu/MnOOH enhance ammonia synthesis from electrochemical nitrate reduction

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Chinese Chemical Letters 2025年第2期36卷 451-455页

作者： Hong-Rui Li Xia Kang Rui Gao Miao-Miao Shi Bo Bi Ze-Yu Chen Jun-Min Yan Key Laboratory of Automobile Materials Ministry of EducationSchool of Materials Science and EngineeringJilin University

In this work,an effective catalyst of Cu/MnOOH has been successfully constructed for electrochemical nitrate reduction reaction （e NO3RR） for synthesis of ammonia （NH3） under ambient *** substrate of MnOOH plays an important role on the size and electronic structure of Cu nanoparticles,where Cu has the ultrafine size of 2.2 nm and positive shift of its valence states,which in turn causes the increased number of Cu active sites and enhanced intrinsic activity of every active *** a result,this catalyst realizes an excellent catalytic performance on eNO3RR with the maximal NH3Faraday efficiency（FE）(96.8%) and the highest yield rate (55.51 mg h-1cm-2) at a large NH3partial current density of700 m A/cm2,which could help to promote the industrialization of NH3production under ambient conditions.

关键词： Adsorption Ammonia Electrocatalysis Interfacial interactions Nitrate reduction reaction

Effect of Nb on the Interfacial Wettability in Al_2O_3/Medium Mn Steel

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Journal of Materials Science & Technology 2003年第6期19卷 625-627页

作者： Sirong YU, Yaohui LIU and Zhenming HECollege of Materials Science and Engineering, jilin univ.rsity, Changchun 130025, China Coll. of Mat. Sci. and Eng. Jilin Univ. Changchun 130025 China

To develop medium Mn steel (MMS) matrix composites reinforced by AI2O3 particles, the effect of Nb on the interfacial wettability of AI2O3/MMS and its mechanism were investigated in this paper. The results show that the wetting angle of the specimens with different Nb contents are bigger than that of the specimen without Nb at the first stage, and then decreases with time at 1450℃. At certain time, the wetting angle is lower than that of the specimen without Nb. At 1550 and 1600℃, the wetting angle of the specimens containing Nb decreases quickly with time at first stage. After 10 min, the wetting angle reaches a steady state, and hardly changes with time. The mechanisms of Nb to improve the wettability can be attributed to the enrichment of Nb at the interface and Nb serves as surface active agent of MMS at T1550℃, and reduces the interfacial energies.

关键词： Madium Mn steel A12O3 Nb Wettalility