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Chinese Journal of Mechanical Engineering 2021年第1期34卷 89-113页

作者： hua Qian Ang School of Engineering RMIT UniversityBundooraVictoria 3083Australia

Self-piercing riveting(SPR)is a cold forming technique used to fasten together two or more sheets of materials with a rivet without the need to predrill a *** application of SPR in the automotive sector has become increasingly popular mainly due to the growing use of lightweight materials in transportation ***,SPR joining of these advanced light materials remains a challenge as these materials often lack a good combination of high strength and ductility to resist the large plastic deformation induced by the SPR *** this paper,SPR joints of advanced materials and their corresponding failure mechanisms are discussed,aiming to provide the foundation for future improvement of SPR joint *** paper is divided into three major sections:1)joint failures focusing on joint defects originated from the SPR process and joint failure modes under different mechanical loading conditions,2)joint corrosion issues,and 3)joint optimisation via process parameters and advanced techniques.

关键词： Self-piercing riveting Mechanical joining Joint defects Failure mechanisms Corrosion Joint optimisation

明修栈道,暗渡陈仓——图书馆服务绩效研究的新思维

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图书馆 2014年第1期 117-119页

作者：徐享王湖南科技大学图书馆湖南湘潭411201

绩效评估的目的是主体实施有效责任规约,其评估是对主体"可为的"行为能力的评估。基于这个认识,文章运用逆向思维,对图书馆服务绩效评估框架进行构建。

关键词：服务绩效服务需求服务供给绩效评估图书馆

Pharmacological targeting cGAS/STING/NF-κB axis by tryptanthrin induces microglia polarization toward M2 phenotype and promotes functional recovery in a mouse model of spinal cord injury

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Neural Regeneration Research 2025年第11期20卷 3287-3301页

作者： Ziwei Fan Mengxian Jia Jian Zhou Zhoule Zhu Yumin Wu Xiaowu Lin Yiming Qian Jiashu Lian Xin hua Jianhong Dong Zheyu Fang Yuqing Liu Sibing Chen Xiumin Xue Juanqing Yue Minyu Zhu Ying Wang Zhihui huang Honglin Teng Department of Orthopedics(Spine Surgery) the First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina School of Pharmacy Hangzhou Normal UniversityHangzhouZhejiang ProvinceChina Department of Neurology The First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina Department of Pathology Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhouZhejiang ProvinceChina Department of Clinical Research Center Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhouZhejiang ProvinceChina

The M1/M2 phenotypic shift of microglia after spinal cord injury plays an important role in the regulation of neuroinflammation during the secondary injury phase of spinal cord *** of shifting microglia polarization from M1(neurotoxic and proinflammatory type)to M2(neuroprotective and anti-inflammatory type)after spinal cord injury appears to be *** possesses an anti-inflammatory biological ***,its roles and the underlying molecular mechanisms in spinal cord injury remain *** this study,we found that tryptanthrin inhibited microglia-derived inflammation by promoting polarization to the M2 phenotype in *** promoted M2 polarization through inactivating the cGAS/STING/NF-κB ***,we found that targeting the cGAS/STING/NF-κB pathway with tryptanthrin shifted microglia from the M1 to M2 phenotype after spinal cord injury,inhibited neuronal loss,and promoted tissue repair and functional recovery in a mouse model of spinal cord ***,using a conditional co-culture system,we found that microglia treated with tryptanthrin suppressed endoplasmic reticulum stress-related neuronal *** together,these results suggest that by targeting the cGAS/STING/NF-κB axis,tryptanthrin attenuates microglia-derived neuroinflammation and promotes functional recovery after spinal cord injury through shifting microglia polarization to the M2 phenotype.

关键词： cGAS/STING functional recovery microglia neuroinflammation neuroprotection nuclear factor-κB polarization spinal cord injury tryptanthrin

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图书馆引入使命管理的探讨

图书情报工作 2005年第7期49卷 125-127页

作者：徐享王湖南科技大学图书馆湘潭411201

使命管理是一个全新的管理理念,图书馆引入使命管理有利于明确图书馆发展方向和服务主题,有利于协调图书馆内外各种矛盾冲突,有利于建立起馆员约束规范,使命管理内容主要包括管理目标、服务哲学、服务形象,它主要通过表述图书馆使命、... 详细信息

使命管理是一个全新的管理理念,图书馆引入使命管理有利于明确图书馆发展方向和服务主题,有利于协调图书馆内外各种矛盾冲突,有利于建立起馆员约束规范,使命管理内容主要包括管理目标、服务哲学、服务形象,它主要通过表述图书馆使命、结合个人职业期望、培养共同价值观、培养共同语言、培养优秀服务团队、实现自我超越、建立责任制度来完成。

关键词：使命管理高校图书馆图书馆管理

数字赋能乡村教育现代化的实然困境与优化路径

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教学与管理 2025年第1期 6-11页

作者：王倩吴家华胡恒钊安徽大学马克思主义学院合肥230601 江西农业大学马克思主义学院南昌330045

以数字赋能为发展契机,推进乡村教育现代化是中国式教育现代化的必然要求,也是乡村全面振兴的重要依托。在教育领域,数字技术蕴含着驱动乡村教育现代化发展的重要价值,能够有效扩大优质教育资源的覆盖范围、变革乡村教育形态、推动乡土... 详细信息

以数字赋能为发展契机,推进乡村教育现代化是中国式教育现代化的必然要求,也是乡村全面振兴的重要依托。在教育领域,数字技术蕴含着驱动乡村教育现代化发展的重要价值,能够有效扩大优质教育资源的覆盖范围、变革乡村教育形态、推动乡土文化的交流传播。但在推动数字赋能乡村教育现代化的实践中,面临着数字教育观念淡薄、数字基础条件不足、师生数字素养薄弱等现实阻碍,迫切需要从重塑价值观念、完善数字设施、培养师生数字素养、加强体制建设入手,为数字赋能乡村教育现代化发展注入新动力,以适应中国式教育现代化发展的新生态。

关键词：数字赋能乡村教育中国式教育现代化乡土文化

Preparation and Characterization of Thermoresponsive Hyperbranched Polyethylenimine with Plenty of Reactive Primary Amine Groups

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Chinese Journal of Polymer Science 2014年第7期32卷 961-968页

作者： hua-ji Liu Run-hua Dong 陈宇 Department of Chemistry School of SciencesTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering

Certain amount of primary amine （NH2） groups of hyperbranched polyethylenimine （HPEI） was first protected by Boc groups. Subsequently, the residual reactive amine groups were reacted with isobutyric anhydride to introduce isobutyramide （IBAm） groups to HPEI. Finally, Boc groups were deprotected to result in HPEI-IBAm-NH2 with 18% of primary amine terminals on the periphery and 80% of IBAm terminal groups （abbreviated as HPEI-IBAm0.80-NH2）. 1H-NMR characterization proved the successful preparation of the product in each step. Compared with its spatial isomer HPEI- IBAm0.8o without primary amine groups, IH-NMR spectra verified that more IBAm groups were located in the interior of HPEI-IBAm0.80-NH2. The further modification of ***-NH2 and HPEI-IBAmo.8o with p-nitrobenzaldehyde demonstrated that ***-NH2 was more reactive than HPEI-IBAm0.80 due to its possession of primary amines. Turbidimetry measurements showed that HPEI-IBAm0.80-NH2 was thermoresponsive in water. In the pH range of 9.5-10 its cloud point temperature （Top） was constant, and it increased obviously upon decreasing the pH below 9.5. The thermoresponsive HPEI-IBAmo.8 exhibited the similar trend, but the pH threshold to achieve the constant Top was around 8.5. Moreover, HPEI-IBAm0.8-NH2 showed higher Top and broader phase transition than HPEI-IBAm0.8. The mechanism leading to the different thermoresponsive properties between HPEI-IBAm0.8-NH2 and its spatial isomer HPEI-IBAm0.8 was discussed.

关键词： Hyperbranched Phase transition Polyethylenimine Spatial isomer Thermoresponsive polymers.

单层Janus Ga_(2)SSe光催化水解性质的第一性原理研究

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原子与分子物理学报 2025年第3期42卷 45-51页

作者：胡新华廖杨芳贵州省贵阳市乌当区第四中学贵阳550018 贵州师范大学物理与电子科学学院贵阳550025

光催化水解制氢为解决能源危机和环境污染问题提供了一种可行的策略.本文通过第一性原理计算,提出了单层Janus Ga_(2)SSe是一种有效的水解光催化剂.结构稳定性分析表明,单层Janus Ga_(2)SSe具有能量和动力学稳定性.电子性质表明,单层Jan... 详细信息

光催化水解制氢为解决能源危机和环境污染问题提供了一种可行的策略.本文通过第一性原理计算,提出了单层Janus Ga_(2)SSe是一种有效的水解光催化剂.结构稳定性分析表明,单层Janus Ga_(2)SSe具有能量和动力学稳定性.电子性质表明,单层Janus Ga_(2)SSe属于间接带隙半导体,有利于降低载流子的复合几率.光催化性能分析表明,单层Janus Ga_(2)SSe的能带边缘位置适合PH=0~14宽范围的光催化水解.此外,单层Janus Ga_(2)SSe具有较高的紫外光和可见光吸收、较大的内建电场、较小的载流子有效质量保证了光生载流子有效分离并快速迁移到反应活性位点参与水的氧化还原反应.研究结果为单层Janus Ga_(2)SSe的合成及其作为水解光催化剂的潜在应用提供了有价值的理论指导.

关键词： Janus材料光催化水解第一性原理

Microstructure of a Ni Matrix Composite Coating Reinforced by In-situ TiC Particles Using Plasma Cladding

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材料热处理学报 2004年第05B期25卷 1041-1044页

作者： WUYu-ping WANGZe-hua LINPing-hua DepartmentofMaterialSciencesandEngineering HohaiUniversityNanjingChina DepartmentofMaterialSciencesandEngineering HohaiUniversityNanjingChina／／DepartmentofMaterialSciencesandEngineeringSoutheastUniversityNanjingChina

Plasma cladding process was used to prepare the TiC/Ni composite coating on the mild steel substrates. The TiC particles were synthesized in-situ. Microstructure and properties of the coating were investigated by optical microscopy, X-Ray diffraction, SEM, TEM and microhardness tester. The results show that the interface between the coating and the substrate is metallurgically bonded. The coating was uniform and almost defect-free when [Ti+C] varied from 10% to 20% after ball milling. The microstructure of the coating is mainly composed of -Ni dendrite, interdendritic eutectic ( -Ni austenite, M23C6 and CrB) and TiC particles. Most of the TiC particles are spherical and a small fraction is blocky in size of l^2(im. The TiC particles are smaller at the bottom than near the top of the coating. The coating has a gradient microstructure and a highest hardness of lOOOHyO. 1.

关键词：显微结构等离子包覆复合涂层 TiC颗粒

Generation of Entangled Coherent States in Raman-Coupled Bose-Einstein Condensates

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Chinese Physics Letters 2004年第6期21卷 999-1002页

作者： KUANGLe-Man ZENGAi-hua KUANGZhen-hua DepartmentofPhysics HunanNormalUniversityChangsha410081 DepartmentofPhysics ShaoyangUniversityShaoyang422000

A method for producing entangled coherent states (ECSs) for atomic Bose-Einstein condensates (BECs) is presented. The proposed method involves a BEC with three internal states and two classical laser beams in a three-level Lambda configuration. We show how to generate multi-state ECSs through properly manipulating strengths of these interactions and laser detunings. A maximally entangled coherent state is obtained explicitly.

关键词： Quantum gases liquids and solids Computational physics Optics quantum optics and lasers Quantum information and quantum mechanics

On the Pathwise Uniqueness of Solutions of One-dimensional Reflected Stochastic Differential Equations with Jumps

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Acta Mathematicae Applicatae Sinica 2024年第1期40卷 149-163页

作者： hua Zhang School of Statistics and Data Science&Key Laboratory of Data Science in Finance and Economics Jiangxi University of Finance and EconomicsNanchang330013China

In this paper, we are concerned with the problem of the pathwise uniqueness of one-dimensional reflected stochastic differential equations with jumps under the assumption of non-Lipschitz continuous coefficients whose... 详细信息

关键词： reflected diffusion processes with jumps pathwise uniqueness local time Meyer It?'s formula