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Syntheses and Crystal Structures of Two 3D Zinc(II) Compounds Involving Coordination and Hydrogen Bonds

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Chinese Journal of Structural Chemistry 2006年第5期25卷 527-532页

作者： CHEN Bai-Quan HAN Lei wu Ben-Lai wu ming-yan HUANG You-Gui HONG Mao-Chun State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences Fuzhou Fujian 350002 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China

Two zinc（Ⅱ） compounds, [Zn（L）（H2O）2]n 1 and [Zn（4,4＇-bpy）（H2O）4]（L） 2 （H2L = trans,trans-1,3 butadiene 1,4-dicarboxylic acid）, were synthesized by hydrothermal methods and characterized by single-crystal X-ray diffraction analyses. Compound 1 crystallizes in monoclinic, space group C2/c with a=15.4970（16）, b = 5.4976（6）, c = 10.7113（12） A, β=96.298（6）°, C6H8O6Zn, Mr = 241.50, V = 907.06（17） A^3, Z = 4, D, = 1.768 g/cm^3, F（000） = 488,μ = 2.703 mm^-1, S = 1.060, the final R = 0.0256 and wR = 0.0660 for 968 observed reflections with Ⅰ 〉 2σ（Ⅰ）. Compound 2 crystallizes in triclinic, space group P1^- with a = 6.915（2）, b = 7.166（2）, c = 10.363（3） A, α = 73.250（4）, β = 84.429（4）, γ = 61.605（3）°, C16H2ON2O8Zn, Mr = 433.70, V = 432.1 （2） A^3, Z = 1, D, = 1.667 g/cm^3, F（000） = 224 and μ= 1.471 mm^-1, S = 1.118, the final R = 0.0486 and wR = 0.1077 for 1352 observed reflections with Ⅰ〉 2σ（Ⅰ）. Upon using the assembly strategy of combination of coordination polymer chains with intermolecular hydrogen bonds, three-dimensional frameworks of complexes 1 and 2 were formed.

关键词： Zn(Ⅱ) coordination polymer hydrogen bonds crystal structure

Feature Selection Based on Difference and Similitude in Data Mining

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wuhan University Journal of Natural Sciences 2007年第3期12卷 467-470页

作者： wu ming yan Puliu School of Electronic Information Wuhan University Wuhan 430072 Hubei China

Feature selection is the pretreatment of data mining. Heuristic search algorithms are often used for this subject. Many heuristic search algorithms are based on discernibility matrices, which only consider the difference in information system. Because the similar characteristics are not revealed in discernibility matrix, the result may not be the simplest rules. Although differencesimilitude（DS） methods take both of the difference and the similitude into account, the existing search strategy will cause some important features to be ignored. An improved DS based algorithm is proposed to solve this problem in this paper. An attribute rank function, which considers both of the difference and similitude in feature selection, is defined in the improved algorithm. Experiments show that it is an effective algorithm, especially for large-scale databases. The time complexity of the algorithm is O（｜ C ｜^2｜U ｜^2）.

关键词： knowledge reduction feature selection rough set difference set similitude set attribute rank function

Effect of Electron Initial Longitudinal Velocity on Low-Energy Structure in Above-Threshold Ionization Spectra

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Chinese Physics Letters 2013年第7期30卷 60-63页

作者： wu ming-yan WANG yan-Lan LIU Xiao-Jun LI Wei-Dong HAO Xiao-Lei CHEN Jing State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan 430071 University of Chinese Academy of Sciences Beijing 100190 Department of Physics and Institute of Theoretical Physics Shanxi UniversityTaiyuan 030006 HEDPS Center for Applied Physics and TechnologyPeking UniversityBeijing 100871 Institute of Applied Physics and Computational Mathematics Beijing 100088

Using a semiclassical model,we investigate the effect of the initial longitudinal velocity of the tunnel-ionized electron on low-energy structure(LES)in above-threshold ionization(ATI)*** analysis shows that the effect(reduction or enhancement)of the initial longitudinal velocity pz0 on the LES is dependent on the direction of the initial longitudinal *** the initial longitudinal velocity along the direction of the laser electric field at the moment of tunneling(i.e.,pz0>0),the Coulomb interaction between the photoelectron and ion core is enhanced,while for the initial longitudinal velocity in the opposite direction(i.e.,pz0<0),the Coulomb effect is *** work provides solid evidence that the initial electron longitudinal velocity has considerable effect on the photoelectron dynamics in the ATI process.

关键词： process. spectra. photoelectron

Intensity and Polarization Effects in Short-Pulse Multiphoton Ionization of Xenon

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Chinese Physics Letters 2011年第8期28卷 76-79页

作者： KANG Hui-Peng WANG Chuan-Liang LIN Zhi-yang CHEN Yong-Ju wu ming-yan QUAN Wei LIU Hong-Ping LIU Xiao-Jun State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan 430071 Graduate School of Chinese Academy of Sciences Beijing 100049

We present photoelectron spectra(PES)of xenon subject to ultrashort intense laser pulses at 400 *** intensity-dependent PES exhibit the dominance of ac-Stark-shifted multiphoton resonances in a multiphoton ionization process.A distinct difference in the spectra with different laser polarization states(i.e.,linearly and circularly polarized states)is revealed and can be understood in terms of the quantum selection rule,which restricts the angular momentum of states that may shift into multiphoton ***,the intensity dependence of the resonance-enhanced electron yield is analyzed in the context of multiphoton Landau–Zener *** model calculation results considering the focal volume effect are in good agreement with the experimental observation.

关键词： process theory Polarization

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井口受煤仓有效容积的计算及其影响因素分析

煤炭工程 2006年第11期38卷 12-14页

作者：吴焱明合肥工业大学安徽合肥230009

井口受煤仓的有效容积影响因素很多,计算复杂。文章采用数值积分的方法,建立了受煤仓有效容积的一个通用计算模型,并开发了相应的软件,其使用方便。在此基础上,分析了受煤仓有效容积的影响因素,为井口受煤仓设计提供了有效的建议。

关键词：受煤仓有效容积计算模型

PC/104下同时实现A/D采样和串行通信

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化工自动化及仪表 2005年第5期32卷 40-42页

作者：吴雁鸣程明霄张华南京工业大学自动化学院江苏南京210009

介绍一种在PC/104下同时进行A/D采样和串行通信的方法。阐述如何利用VC++6.0、VtoolsD编写虚拟设备驱动程序捕获PC104中断进行采样,并编写W IN32应用程序与VxD通信;利用免费串口工具CSerial-Port类编写串口通信代码,并利用线程同步成功... 详细信息

介绍一种在PC/104下同时进行A/D采样和串行通信的方法。阐述如何利用VC++6.0、VtoolsD编写虚拟设备驱动程序捕获PC104中断进行采样,并编写W IN32应用程序与VxD通信;利用免费串口工具CSerial-Port类编写串口通信代码,并利用线程同步成功实现了使PC104同时进行A/D采样和串行通信,并给出关键部分程序。

关键词： PC/104 A/D采样虚拟设备驱动程序串行通信线程同步在线分析仪器

超音速喷涂纳米WC复合涂层与电镀铬层的组织及性能

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材料热处理学报 2015年第S1期36卷 171-176页

作者：吴燕明赵坚陈小明杨潇毛鹏展赵鹏水利机械及其再制造技术浙江省工程实验室浙江杭州310012 水利部产品质量标准研究所浙江杭州310012 水利部杭州机械设计研究所浙江杭州310012

采用超音速火焰喷涂(HVOF)技术和电镀技术分别制备了纳米WC-10Co-4Cr涂层及电镀铬层,通过扫描电镜(SEM)、X射线衍射仪(XRD)、显微硬度计、摩擦磨损试验机、电化学工作站、磨损腐蚀加速试验机等手段对比分析了这两种涂层的性能以及使用... 详细信息

采用超音速火焰喷涂(HVOF)技术和电镀技术分别制备了纳米WC-10Co-4Cr涂层及电镀铬层,通过扫描电镜(SEM)、X射线衍射仪(XRD)、显微硬度计、摩擦磨损试验机、电化学工作站、磨损腐蚀加速试验机等手段对比分析了这两种涂层的性能以及使用寿命。结果表明,纳米WC复合涂层具有远高于电镀铬层的显微硬度、耐磨损性能及结合强度等,并且该涂层具有较高的致密度,而耐腐蚀性能略低于电镀铬层但也远高于基材,磨损腐蚀加速试验结果显示该涂层的使用寿命高达电镀铬层的5倍以上。

关键词：超音速喷涂纳米WC涂层电镀铬

Neuronal regulated cell death in aging-related neurodegenerative diseases:key pathways and therapeutic potentials

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Neural Regeneration Research 2025年第8期20卷 2245-2263页

作者： Run Song Shiyi Yin Jiannan wu Junqiang yan Department of Neurology The First Affiliated HospitalCollege of Clinical Medicine of Henan University of Science and TechnologyLuoyangHenan ProvinceChina Neuromolecular Biology Laboratory The First Affiliated HospitalCollege of Clinical Medicine of Henan University of Science and TechnologyLuoyangHenan ProvinceChina

Regulated cell death(such as apoptosis,necroptosis,pyroptosis,autophagy,cuproptosis,ferroptosis,disulfidptosis)involves complex signaling pathways and molecular effectors,and has been proven to be an important regulatory mechanism for regulating neuronal aging and ***,excessive activation of regulated cell death may lead to the progression of aging-related *** review summarizes recent advances in the understanding of seven forms of regulated cell death in age-related ***,the newly identified ferroptosis and cuproptosis have been implicated in the risk of cognitive impairment and neurodegenerative *** forms of cell death exacerbate disease progression by promoting inflammation,oxidative stress,and pathological protein *** review also provides an overview of key signaling pathways and crosstalk mechanisms among these regulated cell death forms,with a focus on ferroptosis,cuproptosis,and *** instance,FDX1 directly induces cuproptosis by regulating copper ion valency and dihydrolipoamide S-acetyltransferase aggregation,while copper mediates glutathione peroxidase 4 degradation,enhancing ferroptosis ***,inhibiting the Xc-transport system to prevent ferroptosis can increase disulfide formation and shift the NADP^(+)/NADPH ratio,transitioning ferroptosis to *** insights help to uncover the potential connections among these novel regulated cell death forms and differentiate them from traditional regulated cell death *** conclusion,identifying key targets and their crosstalk points among various regulated cell death pathways may aid in developing specific biomarkers to reverse the aging clock and treat age-related neurodegenerative conditions.

关键词： apoptosis autophagy cuproptosis disulfidptosis ferroptosis necroptosis neurodegenerative disease neurological aging diseases PANoptosis pyroptosis

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汉语年龄指称词的类型及文化意蕴探析

广西师范学院学报（哲学社会科学版） 2014年第3期35卷 94-99页

作者：吴言明南宁职业技术学院旅游学院广西南宁530008

年龄指称词是专门用来指称年龄的词,一般可归纳为借代型、隐喻型、字迷型、白描型、衍生型、综合型等基本类型。透过蕴涵于年龄指称词中的传统文化事象与民族文化心理,可以窥见汉语深厚的文化意蕴。

关键词：汉语年龄指称词文化意蕴文化事象文化心理