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时珍国医国药 2001年第6期12卷 497-499页

作者：胡庆文张玲尚立霞单卫华郭承军时延增山东省生物药物研究院山东济南250014

目的 :采用双波长薄层扫描法测定腰腿痛丸中士的宁的含量。方法 :样品采用浸泡提取法 ,溶剂萃取后层离 ,在 λS=2 5 4nm,λR=310 nm下测定含量。结果 :方法简便、准确度高、精密度好。结论 :可作为本制剂的质控方法。

关键词：腰腿痛丸马钱子士的宁薄层扫描法中药含量

Modeling the land surface reflectance for optical remote sensing data in rugged terrain

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Science China Earth Sciences 2008年第8期51卷 1169-1178页

作者： wen JianGuang LIU QinHuo XIAO qing LIU Qiang LI Xiaowen State Key Laboratory of Remote Sensing Science jointly sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal UniversityBeijing 100101China Beijing Research Institute of Uranium Geology Beijing 100029China Graduate University of Chinese Academy of Sciences Beijing 100049China

A model for topographic correction and land surface reflectance estimation for optical remote sensing data in rugged terrian is *** a directional-directional reflectance that is used for direct solar irradiance correction and a hemispheric-directional reflectance that is used for atmospheric diffuse irradiance and terrain background reflected irradiance correction respectively,the directional reflectance-based model for topographic effects removing and land surface reflectance calculation is developed by deducing the directional reflectance with topographic effects and using a radiative transfer model.A canopy reflectance simulated by GOMS model and Landsat/TM raw data covering Jiangxi rugged area were taken to validate the performance of the model presented in the *** validation results show that the model presented here has a remarkable ability to correct topography and estimate land surface reflectance and also provides a technique method for sequently quantitative remote sensing application in terrain area.

关键词： bidirectional reflectance topographic/atmospheric correction sky diffuse irradiance adjacent terrain-reflected irradiance rugged area

Mid-to-Far Infrared Spectral Energy Distribution of Galaxies in the Spitzer First Look Survey Field

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Chinese Journal of Astronomy and Astrophysics 2007年第2期7卷 187-198页

作者： Xiao-qing wen Hong Wu Chen Cao Xiao-Yang Xia Department of Physics Tianjin Normal University Tianjin 300074 National Astronomical Observatories Chinese Academy of Sciences Beijing 100012

We made model fitting to the mid-to-far infrared spectral energy distributions （SEDs） for different categories of galaxies in the main extragalactic field of the Spitzer First Look Survey with the aid of spectroscopic information from the Sloan Digital Sky Survey. We find that the mid-to-far infrared SEDs of HII galaxies, mixture type galaxies and LINERs can be well fitted by the one-parameter （α） dust model of Dale et al. plus the 13 Gyr dust-free elliptical galaxy model. The statistics of α values indicates that all these galaxies tend to be quiescent, although the HII galaxies are relatively more active than the LINERs. The midinfrared SEDs of absorption galaxies are well fitted simply by the 13 Gyr dust-free elliptical galaxy template, and the near-to-mid infrared SEDs of QSOs can be represented by AGN NGC 5506.

关键词： galaxies general - infrared: galaxies - galaxies: active - galaxies statistics

Interfacial microstructure of Cu Cr/1Cr18Ni9Ti bi-metal materials and its effect on bonding strength

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Science China(Technological Sciences) 2015年第5期58卷 825-831页

作者： zhang Qiao LIANG ShuHua ZOU JunTao YANG qing Shaanxi Province Key Laboratory of Electrical Materials and Infiltration Technology Xi'an University of Technology

The Cu Cr/1Cr18Ni9 Ti bi-metal materials were prepared by the solid-liquid bonding method. The microstructures, mechanical properties and formation mechanism of the bonding interface were studied. The results show that there exists a serrated transition layer with a certain width at the interface of Cu Cr/1Cr18Ni9 Ti bi-metal materials, and the transition layer consists of Fe-based and Cu-based solid solutions. The elastic modulus and hardness reach the maximum values at the interface closing to the 1Cr18Ni9 Ti zone. The bonding temperature has a significant effect on the width and morphology of the transition layer. The interfacial bonding strength is at least 30% higher than that of the Cu Cr alloy, and the tensile fracture occurs at the side of the Cu Cr alloy rather than at the bonding interface.

关键词： bonding modulus tensile interfacial SAED hardness closing polymerization Figure bonded

Hysteresis effect in current–voltage characteristics of Ni/n-type 4H-SiC Schottky structure

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Chinese Physics B 2019年第11期28卷 316-321页

作者： Hao Yuan qing-wen Song Chao Han Xiao-Yan Tang Xiao-Ning He Yu-Ming zhang Yi-Men zhang School of Microelectronics Xidian UniversityXi’an 710071China

Hysteresis current–voltage(Ⅰ–Ⅴ) characteristics are often observed in a highly non-ideal(n > 2) as-deposited nickel(Ni)/4 H-SiC Schottky contact. However, we find that this kind of hysteresis effect also exists in an as-deposited Ni/n-type4 H-SiC Schottky structure even if the ideality factor(n) is less than 1.2. The hysteresis Ⅰ–Ⅴ characteristics is studied in detail in this paper by using the various measurements including the hysteresis Ⅰ–Ⅴ, sequentialⅠ–Ⅴ sweeping, cycle Ⅰ–Ⅴ,constant reverse voltage stress(CRVS). The results show that the hysteresis Ⅰ–Ⅴ characteristics are strongly dependent on the sweeping voltage and post-deposition annealing(PDA). The high temperature PDA(800℃) can completely eliminate this hysteresis. Meanwhile, the magnitude of the hysteresis effect is shown to decrease in the sequential Ⅰ–Ⅴ sweeping measurement, which is attributed to the fact that the electrons tunnel from the 4 H-SiC to the localized states at the Ni/ntype 4 H-SiC interface. It is found that the application of the reverse bias stress has little effect on the emission of those trapped electrons. And a fraction of the trapped electrons will be gradually released with the time under the condition of air and with no bias. The possible physical charging mechanism of the interface traps is discussed on the basis of the experimental findings.

关键词： 4H-SiC Schottky hysteresis Ⅰ–Ⅴ Schottky barrier height

Ultrafine Pt nanoparticles supported on double-shelled C/TiO2 hollow spheres material as highly efficient methanol oxidation catalysts

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Journal of Energy Chemistry 2020年第10期29卷 275-282页

作者： Xiaoyu Yue Yuguang Pu wen zhang Ting zhang Wei Gao Department of Chemical and Materials Engineering the University of AucklandPrivate Bag 92019Auckland 1142New Zealand

Catalyst support is extremely important for future fuel cell *** this work,we developed doubleshelled C/TiO2(DSCT)hollow spheres as an excellent catalyst support via a template-directed *** combination of hollow structure,TiO2 shell and carbon layer results in excellent electron conductivity,electrocatalytic activity,and chemical *** uniformed DSCT hollow spheres are used as catalyst support to synthesize Pt/DSCT hollow spheres *** resulting Pt/DSCT hollow spheres exhibited high catalytic performance with a current density of 462 mA mg^-1 for methanol oxidation reaction,which is 2.52 times higher than that of the commercial Pt/***,the increased tolerance to carbonaceous poisoning with a higher If/Ibratio and a better long-term stability in acid media suggests that the DSCT hollow sphere is a promising C/TiO2-based catalyst support for direct methanol fuel cells applications.

关键词： Catalyst support C/TiO2 hollow sphere Metal-support interactions Methanol oxidation reaction

750 kV超高压输电线路对共用走廊并行配电线路三相电压不平衡的影响分析及治理措施

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电气工程学报 2024年第1期19卷 308-315页

作者：包艳艳刘康温定筠张广东丁玉剑国网甘肃省电力公司电力科学研究院兰州730070 国网甘肃省电力公司培训中心兰州730070 中国电力科学研究院有限公司北京100192

受750 kV输电线路电磁感应影响,35 kV配电线路并行接近共用走廊的750 kV输电线路时,35 kV配电线路会出现三相电压不平衡问题,严重时会引起35 kV输电线路继电保护装置动作,影响该线路的运行可靠性,目前国内外针对该问题的治理措施报道较... 详细信息

受750 kV输电线路电磁感应影响,35 kV配电线路并行接近共用走廊的750 kV输电线路时,35 kV配电线路会出现三相电压不平衡问题,严重时会引起35 kV输电线路继电保护装置动作,影响该线路的运行可靠性,目前国内外针对该问题的治理措施报道较少。分析了并行段内不同电压等级导线间的距离、高度、并行长度等参数对35 kV线路三相电压的影响程度,提出了降低35 kV配电线路对地高度并加装屏蔽地线,在35 kV配电线路上加装并联电容器,在35 kV配电线路上加装并联电抗器等保护措施,研究结果表明,采用上述措施可有效改善35 kV配电线路三相电压不平衡问题,提升了配电线路运行可靠性和抵御电磁影响的能力,为750 kV和35 kV线路共用走廊段线路的设计标准制定提供参考方案。

关键词：电能质量共用走廊治理措施配电线路电磁影响

倪青应用《温病条辨》气化法治疗2型糖尿病湿热证经验

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北京中医药 2024年第2期43卷 178-180页

作者：张月颖张珊温志歌史佩玉王皓朔倪青中国中医科学院广安门医院内分泌科北京100053

目前临床多运用脏腑辨证及六经辨证论治2型糖尿病(T2DM)。倪青教授依据中医四诊信息,认为T2DM辨证属湿热证者病位在三焦,可采用《温病条辨》之三焦气化理论作为其辨治依据,三焦气化辨证方法融脏腑辨证、气血津液辨证以及卫气营血辨证于... 详细信息

目前临床多运用脏腑辨证及六经辨证论治2型糖尿病(T2DM)。倪青教授依据中医四诊信息,认为T2DM辨证属湿热证者病位在三焦,可采用《温病条辨》之三焦气化理论作为其辨治依据,三焦气化辨证方法融脏腑辨证、气血津液辨证以及卫气营血辨证于一体,治疗用药应升降通施,以调畅气机,恢复脏腑气化功能。

关键词： 2型糖尿病湿热证三焦气化理论证治要点

Experimental and Theoretical Investigations of Mist Lift Cycle

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China Ocean Engineering 1991年第2期6卷 245-254页

作者： Wu, wen Jiang, wenhao Jiang, qing Wang, Liangyan Chinese Acad of Sciences Guangzhou China

A rectangular mist lift tube of 20 m effective height was constructed to investigate the mist generation and up flow processes with various temperatures, pressures and mass flow rates of the incoming hot water through two different mist generation plates. Parameters such as temperature, pressure and dryness of the two phase mixture at six different heights of the lift tube as well as the lift mass flow ratio were measured and analysed. A theoretical analysis was made based on simplified one dimensional model of two-velocity-two-phase flow. The calculated results were discussed regarding temperature, pressure and dryness variations along the lift tube height and compared with the experimental results.

关键词： Plates Fluid Dynamics

Responses of antioxidant enzyme and photosynthesis in rape seedling to the combined stresses of acid rain and ultraviolet-B radiation

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Journal of Environmental Sciences 2005年第6期17卷 1038-1041页

作者： LIANG Chan-juan HUANG Xiao-hua TAO wen-yi ZHOU qing The Key Laboratory of Industrial Biotechnology Ministry of Education Southern Yangtze University Wuxi 214036 China College of Chemistry and Environmental Science Nanjing Normal University Nanjing 210097 China School of Biotechnology Southern Yangtze University Wuxi 214036 China

Effects of the simulated acid rain（AR） and ultraviolet-B（UV-B, 280-320 nm） radiation with a single or two ways simultaneously （AR ＋ UV-B） on the antioxidant enzyme and photosynthesis of the rape seedlings were investigated by the hydroponic culture. The results of static experiment indicated that the tolerance of rape seedling to single stress（AR or UV-B） is stronger than that to dual stresses（AR ＋ UV-B）. Furthermore, the dual stresses had additive effect on catalase activity, and a synergistic effect on MDA content, net photosynthesis rate, water use efficiency as well as intercellular CO2 concentration. Meanwhile, it has an independent effect on chlorophyll content, stomatal conductance, and transpiration rate as well as membrane permeability. During 64 h restoration course, the dynamic change in the curves of physiological and biochemical indices were not identical, and none of them show a simple linear variation. According to the static and dynamic experiments, it was found that a responsive sequence of catalase activity, membrane permeability, MDA content and photosynthetic characteristics to the above-mentioned stresses was as follows： AR ＋ UV-B 〉 UV-B 〉 AR.

关键词： combined stresses elevated UV-B radiation simulated acid rain rape seedling CAT activity photosynthesis