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Experimental Study of Microstructure Evolution during Tempering of Quenched Steel and Its Application

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材料热处理学报 2004年第05B期25卷 736-739页

作者： shiwei YAOKe-fu CHENNan WANGHong-peng MechanicalEngineeringDepartment TsinghuaUniversityBeijing100084P.R.China

Microstructure evolution during tempering of quenched steel was studied via dilatometric experiments. Temperature ranges of transformation were determined by a relative dilation curve. The thermal expansion coefficient of quenched steel was defined as a function of temperature. The transformation expansion is determined by subtracting thermal expansion from a measured diameter dilation curve. A kinetic equation based on tempering parameter was proposed to predict the microstructure evolution fraction of martensite and bainite of Ni3.5CrMoV and C45 steel. The kinetic equation was used in an in-house FEM code. The internal stress evolution of a quenched generator rotor was investigated.

关键词：回火显微结构锻件残余应力

Topologically engineering of π-conjugated macrocycles: Tunable emission and photochemical reaction toward multi-cyclic polymers

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Chinese Chemical Letters 2024年第10期35卷 233-240页

作者： Yi Liu Peng Lei Yang Feng shiwei fu Xiaoqing Liu Siqi Zhang Bin Tu Chen Chen Yifan Li Lei Wang Qing-Dao Zeng Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in NanoscienceNational Center for Nanoscience andTechnology(NCNST)Beijing100190China Institute of Critical Materials for Integrated Circuits Shenzhen Polytechnic UniversityShenzhen 518055China

The topology of conjugated macrocycles had significant impacts on their photo-physical and photochemical ***,a series ofπ-conjugated macrocycles with diverse topology were synthesized via intramolecular McMurry *** chemical structure and macrocyclic topology were unambiguously confirmed via NMR,MALDI-TOF mass spectra,crystal analysis and scanning tunneling microscopy(STM).Depending on the structural topology and structural rigidity,these cyclic compounds display obviously distinctive emission behavior and photochemical reactions in the solution and in the solid *** phenylene vinylene macrocycle(denoted as MST)exhibiting aggregation-induced emission behavior,was more vulnerable to photo-cyclization in solution and triplet sensitizer promoted photodimerization due to lower strain and more flourishing intramolecular *** UV light irradiation,relatively more flexible MST could yield the anti-dimer via triplet excimer on the HOPG surface confirmed by STM *** contrast,highly constrained bicyclic analogue(named as DMTPE)with central tetraphenylethene core,displayed high emission quantum yields of 68%both in solution and in the solid state,and was relatively inert to photochemical reactions and yield syn-dimer on the surface via singlet excimer involved[2+2]*** on the solution-mediated photo-polymerization of MST moiety,multicyclic porous carbon-rich ribbon connected with four-membered ring was successfully constructed and validated via STM imaging.

关键词： Conjugated macrocycle Scanning tunneling microscopy Aggregation-induced emission Photochemistry Multicyclicribbon

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基于中国书画特征颜色的专用色标设计与制作

实验技术与管理 2015年第12期32卷 53-56页

作者：傅师伟华侨大学机电及自动化学院福建厦门361021

为提高中国书画作品的数字化采集精度,对中国书画创作的各种主要原材料(包括颜料、印泥和宣纸等)进行实样采集和颜色测量,建立中国书画特征颜色数据集,并据此设计与制作中国书画专用色标。实验结果表明,专用色标可用于扫描仪的色度特征... 详细信息

为提高中国书画作品的数字化采集精度,对中国书画创作的各种主要原材料(包括颜料、印泥和宣纸等)进行实样采集和颜色测量,建立中国书画特征颜色数据集,并据此设计与制作中国书画专用色标。实验结果表明,专用色标可用于扫描仪的色度特征化、创建扫描仪的ICC颜色描述文件,对中国书画原材料颜色样品的数字化采集精度优于IT8.7/2标准色标。

关键词：中国书画专用色标 IT8.7/2标准色标色度特征化数字化采集

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带衬套冷挤压孔在三维状态下的有限元分析

上海交通大学学报 1999年第2期33卷 188-191页

作者：陈明傅仕伟王珉左敦稳上海交通大学机械工程学院南京航空航天大学机电工程学院

针对目前在研究冷挤压孔边残余应力时，大都采用基于厚壁圆筒的轴对称小变形、平面应力状态、孔边受力为均布载荷等假设所带来的不足，提出了在三维真实模型状态下，考虑衬套对孔边受力的影响、试件在厚度方向上的应力差异等因素．研究... 详细信息

针对目前在研究冷挤压孔边残余应力时，大都采用基于厚壁圆筒的轴对称小变形、平面应力状态、孔边受力为均布载荷等假设所带来的不足，提出了在三维真实模型状态下，考虑衬套对孔边受力的影响、试件在厚度方向上的应力差异等因素．研究了带衬套挤压件在加载、卸载及疲劳拉伸载荷状态下的应力分布，并和无衬套挤压时的状态进行比较，从机理上揭示了带衬套挤压在改善试件抗疲劳性能方面的优势所在．

关键词：冷挤压孔残余应力抗疲劳性能有限元

Asymptomatic hyperuricemia children:a dual energy CT study

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Asymptomatic hyperuricemia children:a dual energy CT study

Lipoxin A4 and Nuclear factor kappa B in serum and urine:potential markers for Pediatric Henoch-Schonlein purpura Nephritis

2018年浙江省医学会儿科学分会学术年会

作者： Qianqian Ying Jiapei Wang Yunyan Li Nan Sun Yazhen Di Mengjiao Shen shiwei fu Ningbo University Ningbo women and children's hospital Tianjin children's hospital

Objective:The aim of this study was to investigate the dual-energy computed tomography(DECT) monosodium urate(MSU) deposits in children with asymptomatic hyperuricemia(HUA).Methods:DECT scans of both feet were performed in 21 asymptomatic hyperuricemia children who went to the hospital between August 2015 to August 2017 and analyzed the distribution of MSU crystal ***:MSU crystals were observed in 12/21(57.14%) children with asymptomatic HUA according to DECT.

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Lipoxin A4 and Nuclear factor kappa B in serum and urine:pot...

Urinary lipoxin A4 and NF-κB as potential biomarkers in pediatric Henoch-Schonlein purpura

2018年浙江省医学会儿科学分会学术年会

作者： Mengjiao Shen Qianqian Ying Yunyan Li Ling Wu Yazhen Di Jiapei Wang shiwei fu Ningbo University Ningbo women and children's hospital

Objective:The study was conducted to observe the serum and urine levels of Lipoxin A4 (LXA4) and Nuclear Factor-kappa B(NF-κB) in pediatric Henoch-Sch?nlein purpura (HSP),and their association with *** andMethods:99 HSP cases and 27 healthy controls (Controls) were recruited in this *** cases were further divided into 3 groups based on the clinical features:Group 1(37 HSP without gastrointestinal (GI) involvement and nephritis),Group 2(30 HSP with GI involvement but without nephritis) and Group 3(32 HSP with nephritis (HSPN)).

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Urinary lipoxin A4 and NF-κB as potential biomarkers in ped...

2018年浙江省医学会儿科学分会学术年会

作者： Mengjiao Shen Shiling Zhong Yunyan Li Xiahua Dai Yazhen Di Qianqian Ying shiwei fu Qiaoqiao Yan Ningbo University Ningbo women and children's hospital

Objective:To explore the clinical significance of urinary lipoxin A4(LXA4) and NF-κB in pediatric HenochSchonlein purpura(HSP).Methods:124 children with HSP and 25 age-matched healthy children were enrolled,served as case group and control group,the former included 21 children with Henoch-Schonlein purpura Nephritis (HSPN).The levels of LXA4 and NF-κB were determined by ELISA and the correlation between LXA4 and NF-κB was analyzed.

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科技论文作者署名异化及其治理路径

编辑学报 2021年第1期33卷 82-85页

作者：李新根付示威东北大学学报编辑部 110819 东北大学文法学院沈阳110169

科技论文作者署名应根据研究者的实际贡献来决定,但由于学术评价的影响,科技论文作者署名面临着各种利益和力量的角力,导致了各种作者署名异化现象。在分析作者署名异化产生原因及危害的基础上,本文提出了治理对策:加强科研伦理建设,坚... 详细信息

科技论文作者署名应根据研究者的实际贡献来决定,但由于学术评价的影响,科技论文作者署名面临着各种利益和力量的角力,导致了各种作者署名异化现象。在分析作者署名异化产生原因及危害的基础上,本文提出了治理对策:加强科研伦理建设,坚持实事求是的优良学风;科技期刊应坚持以质论稿,有效遏制"名人"被挂名现象;加强编辑流程管理,防范"虚假作者"和"搭便车"署名;充分发挥论文"致谢"功能,引导作者避免"感谢型"署名。

关键词：科技论文作者署名署名异化署名权虚假信息

基于决策变量自适应分类的大规模多目标进化算法

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长江信息通信 2023年第7期36卷 65-67,70页

作者：付世炜南宁师范大学计算机与信息工程学院广西南宁530100

决策变量分类是求解大规模多目标优化问题有效的解决方式之一,鉴于此,文章提出一种基于决策变量自适应分类的大规模多目标进化算法MOEA/ADA,通过设置决策变量分类阈值与自适应的决策变量随机采样数实现决策变量自适应分类并进行优化。... 详细信息

决策变量分类是求解大规模多目标优化问题有效的解决方式之一,鉴于此,文章提出一种基于决策变量自适应分类的大规模多目标进化算法MOEA/ADA,通过设置决策变量分类阈值与自适应的决策变量随机采样数实现决策变量自适应分类并进行优化。本文算法与四种大规模多目标进化算法在四种维度的大规模决策变量数的LSMOP1-5基准测试问题上进行性能实验。实验表明:该算法可以解决许多复杂的优化问题,是一种较为智能且优良的算法。

关键词：多目标进化算法大规模决策变量自适应分类

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