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Chinese Journal of Chemistry 2014年第5期32卷 381-386页

作者： ping song Lili Zhao Shunjun Ji Analytic and Testing Center Soochow UniversitySuzhouJiangsu 215123China Key Laboratory of Organic Synthesis of Jiangsu Province College of ChemistryChemical Engineering and Materials Science&Collaborative Innovation Center of Suzhou Nano Science and TechnologySoochow UniversitySuzhouJiangsu 215123China

An efficient multicomponent reaction of 3-indolyl-3-oxopropanenitriles with dialkyl acetylenedicarboxylates and isocyanides under mild conditions leading to highly functionalized 6-(indol-3-yl)-4H-pyrans in moderate t... 详细信息

关键词： isocyanides indole [3+3]cyclization dialkyl acetylenedicarboxylates pyran derivatives

Recent progress on single-molecule nanocatalysis based on single-molecule fluorescence microscopy

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Science Bulletin 2017年第4期62卷 290-301页

作者： Yuwei Zhang Tao Chen ping song Weilin Xu State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Jilin Provincial Key Laboratory of Low Carbon Chemical Power Changchun Institute of Applied ChemistryChinese Academy of SdencesChangchun 130022China Graduate University of Chinese Academy of Sciences Beijing 100049China

Understanding the heterogeneous catalytic properties of nanoparticles is of great significance for the development of high efficient nanocatalysts, but the intrinsic heterogeneities of nanocatalysts were always covered in traditional ensemble studies. This issue can be overcome if one can follow the catalysis of individual nanoparticles in real time. This paper mainly summarizes recent developments in single- molecule nanocatalysis at single particle level in Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. These developments include the revealing of catalytic kinetics of different types （plane ＆ edge） of surface atoms on individual Pd nanocubes, the observing of in situ deactivation of indi- vidual carbon-supported Pt nanoparticles during the electrocatalytic hydrogen-oxidation reaction, and the measurement of catalytic activation energies on single nanocatalysts for both product formation process and dissociation process, etc. These studies further indicate the advantages or unique abilities of single-molecule methods in the studies of nanocatalvsis or even chemical reactions.

关键词： Single-molecule nanocatalysis Single-molecule fluorescence microscopy Activation energy Electrocatalysis Super-resolution imaging

Flow Stealer: lightweight load balancing by stealing flows in distributed SDN controllers

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Science China(Information Sciences) 2017年第3期60卷 123-138页

作者： ping song Yi LIU Tianxiao LIU Depei QIAN Sino-German Joint Software Institute Beihang University Beijing Key Laboratory of Network Technology

Software-defined networking(SDN) introduces centralized controllers to increase network programmability drastically. Distributed control planes, in which multiple SDN controllers work together to manage a network, have been proposed to satisfy the requirements of large-scale networks, and different kinds of load-balancing approaches have been proposed to balance the workloads among these controllers. Current load-balancing approaches generally use switch migration, which adjusts the mapping between switches and controllers dynamically according to controller workloads. These switch migration-based approaches face challenges under burst traffic as a result of their overhead and longer detection periods. This paper proposes Flow Stealer,a lightweight load-balancing method for distributed SDN controllers. Flow Stealer uses a low-cost flow-stealing method, in which idle controllers share workloads temporarily with overloaded controllers by stealing flow events from them. The flow-stealing method not only can react to changes of network traffic more quickly, but can also reduce the frequency of switch migration. In addition, Flow Stealer incorporates both flow stealing and switch migration to adapt to burst traffic and long-term traffic changes. Experimental results show that Flow Stealer can balance the workloads among controllers more efficiently, especially under burst traffic.

关键词： software defined networking load balancing flow stealing distributed controller switch migration

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无机混凝剂的研究及应用进展

应用化工 2024年第7期53卷 1676-1680,1686页

作者：王森宋萍金虎李晨黄徐荔陈文慧陕西科技大学环境科学与工程学院陕西西安710000 中国轻工业水污染控制工程技术研究中心陕西西安710000 西安净水处理有限责任公司陕西西安710000 陕西陕焦化工有限公司陕西渭南714000

介绍了无机混凝剂的发展历程,其中主要包括铁盐混凝剂、铝盐混凝剂、钛盐混凝剂,重点论述了一种新型混凝剂(锆盐混凝剂)的作用机理以及研究进展,并在此基础上对锆盐混凝剂在未来研究及应用的方向做出了总结与展望。

关键词：废水处理混凝法无机混凝剂锆盐混凝剂

公路路基变形破坏及其测试技术研究进展与展望

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科学技术与工程 2024年第15期24卷 6134-6145页

作者：张平松余宏庆许时昂吴海波安徽理工大学地球与环境学院淮南232001 合肥综合性国家科学中心能源研究院(安徽省能源实验室) 合肥232000

路基变形是公路病害的主要原因之一,其在公路建设、管理、运营、养护过程中带来的隐患日益凸显。目前以遥感测绘、地球物理探测、多传感器为代表性的相关技术,在路基变形测试中发挥了重要作用。为研究道路工程领域动态和行业发展趋势,... 详细信息

路基变形是公路病害的主要原因之一,其在公路建设、管理、运营、养护过程中带来的隐患日益凸显。目前以遥感测绘、地球物理探测、多传感器为代表性的相关技术,在路基变形测试中发挥了重要作用。为研究道路工程领域动态和行业发展趋势,梳理近年来道路工程领域理论、方法、技术及装备研究现状,阐述了公路路基变形的主要形式及影响因素,分析了路基变形测试技术类型及其优缺点,进一步讨论了对全周期智慧监测体系的认识及其发展趋势。构建路基变形监测体系是感知路基状态、路基稳定性评估和灾害预警的主要途径。随着人工智能和先进测试技术的快速进步,路基变形测试技术呈现出动态化、透明化、智慧化等新特点。加强公路测试基础理论、技术与装备的研发,形成基于立体空间的多手段路基健康监测体系是未来道路安全运维的重要发展方向。

关键词：公路道路工程路基变形变形特征测试技术智慧监测体系

Different expression pattern of serum soluble intercellular adhesion molecules-1 and neutrophilic expression of CD18 in patients with diabetic retinopathy

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International Journal of Ophthalmology(English edition) 2012年第2期5卷 202-207页

作者： Hua Ai Hu-ping song Department of Ophthalmology Xi'an No. 4 Hospital Xi'an 710004 Shaanxi Province China

AIM: To investigate the levels of serum soluble intercellular adhesion molecules-1 (sICAM-1) and neutrophilic expression of CD18 in patients with various stages of diabetic retinopathy and to determine their different expression pattern in the development of diabetic retinopathy(DR). METHODS: Levels of serum sICAM-1 and CD18 on the surface of neutrophile were measured in 41 DR patients, they were classified in three subgroups according to the stage of retinopathy as determined by fund's ophthalmoscopy; 10 control subjects were also studied. sICAM-1 were measured by enzyme-linked immunosorbent assay and CD18 by flow cytometry. RESULTS: The neutrophilic CD18 expression and serum sICAM-1 level were all significantly elevated in all diabetic subgroups compared to control subjects (P <0.01). The differences of CD18 and sICAM-1 among the diabetic subgroups were significant in CD18 but not in sICAM-1. The progression of retinopathy was associated with an increase both in CD18 and in sICAM-1 levels by simple correlation analysis (beta =0.74, P<0.001; beta =0.38, P<0.01, respectively). But stepwise multiple regression analysis revealed that only CD18 Was independent determinant of retinopathy (beta =1.04, P<0.01). CONCLUSION: Our results confirm the contribution of endothelial and neutrophilic activation in the development of DR as indicated by increased levels of CD18 and sICAM-1. However, a direct implication of CD18 and ICAM-1 in the progression of DR can be supported only in the CD18 but not ICAM-1. CD18 and ICAM-1 may play different role in the development of diabetic retinopathy.

关键词： diabetic retinopathy serum soluble intercellular adhesion molecules-1 neutrophilic CD18

Electron content near the lunar surface using dual-frequency VLBI tracking data in a single lunar orbiter mission

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Research in Astronomy and Astrophysics 2015年第5期15卷 753-763页

作者： Zhen Wang Na Wang Jin-song ping Key Laboratory of Radio Astronomy Xinjiang Astronomical Observatory Chinese Academy of Sciences Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of Sciences

In VLBI observations of Vstar, a subsatellite of the Japanese lunar mission SELENE, there were opportunities for lunar grazing occultation when Vstar was very close to the limb of the Moon. This kind of chance made it possible to probe the thin plasma layer above the Moon＇s surface as a meaningful by-product of VLBI, by using the radio occultation method with coherent radio waves from the S/X bands. The dual-frequency measurements were carried out at Earth-based VLBI stations. In the line-of-sight direction between the satellite and the ground-based tracking station where VLBI measurements were made, the effects of the terrestrial ionosphere, interplanetary plasma and the thin lunar ionosphere mixed together in the combined observables of dual-frequency Doppler shift and phase shift. To separate the variation of the ionospheric total electron content （TEC） near the surface of the Moon from the mixed signal, the influences of the terrestrial ionosphere and interplanetary plasma have been removed by using an extrapolation method based on a short-term trend. The lunar TEC is estimated from the dual-frequency observation for Vstar from UT 22：18 to UT 22：20 on 2008 June 28 at several tracking stations. The TEC results obtained from VLBI sites are identical, however, they are not as remarkable as the result obtained at the Usuda deep space tracking station.

关键词： planets and satellites atmospheres -- occultations --detection

Trigonometric Series with a Generalized Monotonicity Condition

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Acta Mathematica Sinica,English Series 2014年第8期30卷 1289-1296页

作者： Lei FENG Vilmos TOTIK song ping ZHOU Institute of Mathematics Zhejiang Sci-Tech University MTA-SZTE Analysis and Stochastics Research Group Bolyai InstituteUniversity of Szeged Department of Mathematics and Statistics University of South Florida

In this paper,we consider numerical and trigonometric series with a very general monotonicity ***,a fundamental decomposition is established from which the sufficient parts of many classical results in Fourier analysis can be derived in this general *** the second part of the paper a necessary and sufficient condition for the uniform convergence of sine series is proved generalizing a classical theorem of Chaundy and Jolliffe.

关键词： Uniform convergence monotonicity mean value bounded variation decomposition

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寻常型银屑病态靶辨治体系的构建

吉林中医药 2024年第5期44卷 522-525页

作者：赵月纯金秋百宋坪中国中医科学院广安门医院北京100053

传统中医辨证论治寻常型银屑病的疗效参差不齐,迫切需要创新治疗方法突破治疗瓶颈。本文借鉴仝小林院士提出的“态靶结合”辨治模式,通过现代医学诊断与中药药理研究,探索寻常型银屑病的精准治疗路径。强调玄府郁闭为寻常型银屑病共有... 详细信息

传统中医辨证论治寻常型银屑病的疗效参差不齐,迫切需要创新治疗方法突破治疗瓶颈。本文借鉴仝小林院士提出的“态靶结合”辨治模式,通过现代医学诊断与中药药理研究,探索寻常型银屑病的精准治疗路径。强调玄府郁闭为寻常型银屑病共有发病机制,根据其自然演变过程,分为郁、壅、虚三态,并针对不同态的特点,制定相应的治疗策略。此外,本文详细讨论了寻常型银屑病常见症靶、标靶及靶药,为临床提供了具体的治疗方案。

关键词：态靶医学寻常型银屑病玄府

重组牛碱性成纤维细胞生长因子眼用凝胶联合妥布霉素地塞米松滴眼液对白内障术后干眼症患者泪膜破裂时间的影响

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系统医学 2024年第13期9卷 53-56,67页

作者：宋平张梅潘红莲南京医科大学眼科医院泪道疾病科江苏南京210009

目的分析白内障术后干眼症给予重组牛碱性成纤维细胞生长因子眼用凝胶联合妥布霉素地塞米松滴眼液治疗的效果,并探讨对患者泪膜破裂时间的影响。方法目的选取南京医科大学眼科医院2021年1月—2023年6月收治的白内障术后干眼症患者84例,... 详细信息

目的分析白内障术后干眼症给予重组牛碱性成纤维细胞生长因子眼用凝胶联合妥布霉素地塞米松滴眼液治疗的效果,并探讨对患者泪膜破裂时间的影响。方法目的选取南京医科大学眼科医院2021年1月—2023年6月收治的白内障术后干眼症患者84例,按治疗方法不同分组,两组均42例,参照组给予重组牛碱性成纤维细胞生长因子眼用凝胶治疗,研究组加用妥布霉素地塞米松滴眼液治疗。比较两组治疗前、治疗1个月后的眼部症状、泪膜稳定性、炎症因子水平,并统计两组的不良反应发生率。结果治疗后,研究组眼表疾病指数评分(18.17±5.52)分、角膜荧光染色评分(0.77±0.27)分低于参照组(24.73±6.62)分、(1.38±0.25)分,差异有统计学意义(t=4.932、10.744,P均0.05)。结论采用重组牛碱性成纤维细胞生长因子眼用凝胶联合妥布霉素地塞米松滴眼液治疗白内障术后干眼症患者,可改善其泪膜破裂时间,减轻干眼症状,缓解炎症,且具有一定的安全性。

关键词：白内障干眼症妥布霉素地塞米松泪膜破裂时间泪膜稳定性炎症因子