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山东大学学报（哲学社会科学版） 2002年第6期 134-136页

作者：姜令嘉山东大学网络教育学院山东济南250100

构建终身教育体系是一项复杂的系统工程,而现代远程教育的特点决定了它将在构建我国终身教育体系中发挥越来越重要的作用,因此,大力发展现代远程教育不仅可能,而且十分必要。

关键词：现代远程教育终身教育体系

Cutting performance of saw blades with microtextured rougher and finisher sawteeth

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Advances in Manufacturing 2024年第2期12卷 317-334页

作者： Yang Lu jian-Xin Deng Zhi-Hui Zhang jia-Xing Wu Ran Wang Yi-Chen Bao Key Laboratory of High Efficiency and Clean Mechanical Manufacture of MOE School of Mechanical EngineeringShandong UniversityJinan250061People’s Republic of China

The problems of severe sawtooth wear,harsh sawing noise,and low surface quality during the processing of circular saw blades need to be *** improve the cutting performance of TiC-based cermet saw blades,microtextures parallel to the cutting edge were fabricated on rough and fine sawteeth by laser *** cutting tests were performed on a sawing platform under lubricated *** of the sawing arc length and working sawtooth cutting force variations were developed for sawing steel pipes,and the accuracy of the sawing force model was verified *** results indicate that the variations in the sawing force are proportional to the sawing arc *** circular saw blades with microtextures that did not penetrate the sawtooth rake face exhibited the lowest cutting force,sawing noise,and highest machined surface ***,the worn-out distance of the rougher and finisher sawteeth was reduced by approximately 7.4%and 44.1%,respectively,compared with conventional circular saw *** main failure modes of sawteeth were tip wear,rake face adhesion,and oxidative *** addition,the mechanism by which the textures improve the cutting and wear properties of TiC-based circular saw blades was *** study provided a significant concept for enhancing the cutting performance of circular saw blades and improving the machined surface quality.

关键词： Circular saw blades Micro textures Cutting performance Wear performance

Propagation form of internal cracks induced by continuous casting soft reduction and control strategy for internal quality

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Journal of Iron and Steel Research International 2024年第3期31卷 622-633页

作者： Pu Wang Liang Chen Qun-wei Tang Wei-tao Li Shao-xiang Li jia-quan Zhang school of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Weifang Special Steel Group Co..Ltd. Weifang 262400ShandongChina school of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

The propagation form of internal cracks induced by continuous casting soft reduction and the control strategy for enhancing the internal quality of 45 steel through industrial trials and a three-dimensional flow-heat transfer-solidification coupling model were *** results showed that the internal cracks induced by soft reduction exhibited a characteristic of being"coarse in the middle and fine at both ends",and displayed an elliptical arc distribution on the loose side of the strand cross *** cracks originated within the brittle temperature range and propagated inward to the liquid impenetrable temperature and outward to the zero ductility temperature or *** control strategy for enhancing the internal quality of the 45 steel strand through soft reduction is to adjust the casting speed or the reduction zone appropriately,ensuring that the central solid fraction of the reduction zone falls within the range of *** this point,a reasonable reduction amount is allocated to eliminate the center shrinkage cavities and center segregation,even if it results in minor reduction-induced cracks.

关键词： Continuous casting Soft reduction Crack propagation Internal quality Control strategy

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《大学》主旨及对后世的影响

山东师范大学学报（人文社会科学版） 2002年第5期47卷 88-91页

作者：贾艳红山东大学历史文化学院山东济南250100

《大学》提出了一套自修身以至于齐家、治国、平天下的修己治人之道 ,使它不仅为封建社会提供了系统的政治哲学理论 ,而且也为封建士大夫的道德修养提供了基本方法 ,对封建社会的政治、哲学。

关键词：性善论挈矩之道三纲领八条目内圣外王

Study on the mechanism of a novel tandem reaction by which substituted imidazo[1,5-a]pyridine derivatives were formed

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Study on the mechanism of a novel tandem reaction by which s...

Self-assembly tungsten selenide hybrid ternary MOF derived magnetic alloys via multi-polarization to boost microwave absorption

中国化学会第四届有机化学学术会议

作者： Jiong jia, jianwu Wang, Zhengting Cai school of Chemistry and Chemical Engineering. shandong university, jinan 250100, P.R. china.

＜正＞The mechanism of a novel tandem reaction（Scheme 1） by which substituted imidazo[l,5-a]pyridine derivatives were formed has been investigated using RHF and B3LPY theory. Solvent effects were studied with the Onsarger model and the CPCM model using the dielectric constant （37.0） of DMF. The results reveal that the whole reaction is composed of four steps: deprotonation, novel Claisen cyclization, 1,3-proton shift and dehydroxylation, the 1,3-proton shift is the rate-determining step（Figure 1 and 2）. Basic condition is favorable. Solvent effects have a marked conse-

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Nano Research 2024年第3期17卷 1625-1635页

作者： Tianbao Zhao Tingting Zheng Di Lan Yan Zhang Zhengshuo Sun Chao Wang Zirui jia Guanglei Wu Institute of Materials for Energy and Environment State Key Laboratory of Bio-fibers and Eco-textilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China school of Materials Science and Engineering Hubei University of Automotive TechnologyShiyan 442002China College of Chemistry and Chemical Engineering Qingdao UniversityQingdao 266071China

Confronted with severe electromagnetic wave pollution,the development of high-performance electromagnetic wave shielding or absorbing materials is an effective way to deal with ***,double transition metal alloys and transition metal dichalcogenides have attracted extensive attention in electromagnetic wave absorption,but few reports have studied the effects of these two materials on electromagnetic wave absorption at the same *** this work,cobalt-based alloy with magnetic loss mechanism was selected for composition *** ternary metal-organic framework was prepared by the one-step method,and then CoCu/C was prepared by high temperature ***,in the hydrothermal process,ultra-thin tungsten selenide nanosheets were coated on the surface of magnetic component,and the final polyhedral WSe_(2)/CoCu/C composites with multiple heterogeneous interfaces were *** synergistic effect of dielectric and magnetic components optimizes impedance matching and allows more electromagnetic waves to enter the ***,through the conduction loss of high conductivity graphitized carbon,interfacial polarization,and dipole polarization of heterogeneous interfaces between the components,the magnetic loss provided by CoCu alloy can work together to maximize the attenuation ability of electromagnetic ***,the minimum reflection loss(RLmin)value of the composite reaches-53.43 dB when the matched thickness is 2.1 mm,while the maximum effective absorption bandwidth(EABmax)reaches 6.0 GHz at a thin thickness of 1.8 *** work provides some support and reference for the design of novel electromagnetic wave absorbing materials via the dielectric/magnetic loss synergistic mechanism.

关键词： metal-organic framework dielectric/magnetic loss transition metal dichalcogenide electromagnetic wave absorption

Study on the Mechanism of a Novel Tandem Reaction to Produce Substituted lmidazo[1,5-a]pyridine Derivatives

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Study on the Mechanism of a Novel Tandem Reaction to Produce...

中国化学会第四届有机化学学术会议

作者： jia, Jiong WANG, jian-Wu CAI, Zheng-Ting (school of Chemistry and Chemical Engineering, shandong university, jinan 250100)

＜正＞The mechanism of a novel tandem reaction （Eq. 1） to produce substituted imidazo[1,5-a]pyridine derivatives has been investigated using RHF and B3LPY theories. Solvent effects were studied with the Onsarger model and the CPCM model using the dielectric constant （37.0） of DMF. The results reveal that the whole reaction is composed of four steps: deprotonation, novel Claisen cyclization, 1,3-proton shift and dehydroxylation, and the 1,3-proton shift is the rate-determining step （Figures 1 and 2）. Basic condition is favorable. Solvent effects have a marked consequence on the reaction, especially on deprotonation. In the gas phase, deprotonation is very fast, whereas in the polar solvent it is difficult and becomes the rate-determining step. Furthermore, solvent effects decrease the relative free energy of product dramatically.

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互联网信息组织中一个模型的对偶求解

山东大学学报（理学版） 2003年第3期38卷 27-30页

作者：孔淑兰刘家壮山东大学数学与系统科学学院山东济南250100

讨论了互联网信息组织和规划的一个新问题 :带拒绝装箱问题 ,利用原始对偶互补松弛条件给出此问题的一个最优值的下界 ,利用下界值对应解的性质得到带拒绝装箱问题的一个近似算法 .

关键词：装箱问题互联网络原始对偶互补松弛条件近似算法

Direct laser writing on halide perovskites:from mechanisms to applications

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Light(Advanced Manufacturing) 2024年第1期5卷 93-114页

作者： Yuhang Sheng Xiaoming Wen Baohua jia Zhixing Gan Center for Future Optoelectronic Functional Materials School of Computer and Electronic Information/School of Artificial IntelligenceNanjing Normal UniversityNanjing 210023China Centre for Atomaterials and Nanomanufacturing School of ScienceRMIT UniversityMelbourne3000 VictoriaAustralia

Metal halide perovskites have emerged as game-changing semiconductor materials in *** an efficient micro-/nano-manufacturing technology,direct laser writing(DLW)has been extensively used to fabricate patterns,micro/nanostructures,and pixel arrays on perovskites to promote their optoelectronic *** to the unique ionic properties and soft lattices of perovskites,DLW can introduce rich light-matter interactions,including laser ablation,crystallisation,ion migration,phase segregation,photoreaction,and other transitions,which enable diverse functionalities in addition to the intrinsic properties of *** on their patterned structures,perovskites have numerous applications in displays,optical information encryption,solar cells,light-emitting diodes,lasers,photodetectors,and planar lenses,which are comprehensively discussed in this ***,we discuss the challenges that must be addressed for the future development of this fascinating field.

关键词： Direct laser writing Halide perovskites Laser-matter interactions Optoelectronics

An Ion-Pumping Interphase on Graphdiyne/Graphite Heterojunction for Fast-Charging Lithium-Ion Batteries

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CCS Chemistry 2024年第1期6卷 110-124页

作者： Juan An Fan Wang jia-Yue Yang Guoxing Li Yuliang Li shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Science Center for Material Creation and Energy ConversionSchool of Chemistry and Chemical EngineeringInstitute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237 Optics&Thermal Radiation Research Center Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237 Institute of Chemistry The Chinese Academy of SciencesBeijing 100190 university of Chinese Academy of Sciences Beijing 100049

The sluggish lithium-ion(Li-ion)transport kinetics in graphite anode hinders its application in fast-charging Li-ion batteries(LIBs).Here,we develop an ionpumping interphase(IPI)on graphdiyne(GDY)/graphite heterojunction anodes to boost the ionic transport kinetics and enable high-performance,fast-charging *** IPI changed the ion solvation/desolvation environment by covalent/non-covalent interactions with Li ions or solvents to optimize solid-electrolyte interphase(SEI)and regulate Li-ion transport *** studied the in situ growth of few-layer GDY on graphite surface(GDY/graphite)as the IPI and found that the strong interaction between GDY and Li ions enabled surface-induced modification of the ion solvation behavior and surface-assisted desolvation effect to accelerate the Li-ion desolvation process.A functional anion-derived SEI layer with improved Li-ion conductivity was *** with the generated built-in electric field at GDY/graphite hetero-interface self-pumping Li ions to intercalate into the graphite,the Li-ion transport kinetics was significantly enhanced to effectively eliminate Li plating and large voltage polarization of the graphite anodes.A fast Li intercalation in GDY/graphite without Li oversaturation at the edge of the graphite was directly *** superior performance with high capacity(139.2 mA h g^(-1))and long lifespan(1650 cycles)under extremely fast-charging conditions(20 C,1 C=372 mA g^(-1))was achieved on GDY/graphite *** at low temperatures(-20℃),a specific capacity of 128.4 mA h g^(-1) was achieved with a capacity retention of 80%after 500 cycles at a 2 C rate.

关键词： extreme fast-charging lithium-ion batteries lithium-ion transport kinetics ion-pumping interphase graphdiyne/graphite heterojunction