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Swallowtail model for predicting the global bifurcation behavior of CO oxidation reactions

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Science China Chemistry 2011年第7期54卷 1072-1077页

作者： CUI Tao tang shunlin ZHANG Lei YU DaRen School of Energy Science and Engineering Harbin Institute of Technology Harbin 150001 China Pharmaceutical College Heilongjiang University of Chinese Medicine Institution Harbin 150040 China

Catalytic CO oxidation on platinum group metals exhibits nonlinear phenomena such as hysteresis and *** of the nonlinear mechanisms is important for catalyst design and control of reaction *** studies have offered initial insights into the local bifurcation behavior of CO ***,since the bifurcation behavior of CO oxidation is determined by multiple parameters such as temperature,total flux,and CO fraction,it is difficult to predict the global bifurcation behavior in the resulting high-dimensional parameter *** is for this reason that the observed nonlinear phenomena reflect just the local bifurcation features of CO *** this paper,an elementary chemical law(topological invariance) concerning the bifurcation behavior of CO oxidation on platinum group metals such as Pd(111) is found from a topological *** the elementary law,we put forward a topological approach to model the critical criteria for the reaction hysteresis and *** model may be applied to predict the global bifurcation behavior of CO oxidation in the high-dimensional parameter *** topological approach and the model results may be useful as a guide in thinking about the complex reaction mechanism,designing reaction routes,and actively controlling the bifurcation behavior of the CO oxidation reaction.

关键词： CO oxidation bifurcation hysteresis

Binuclear Ruthenium Complexes with Benzo[1,2-b;4,5-b＇]- dithiophene Analogues as Bridge Ligands： Syntheses, Characterization and Notable Difference on Electronic Coupling

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Chinese Journal of Chemistry 2017年第7期35卷 1170-1178页

作者： Ya-Ping Ou shunlin tang Aihui Wang Junhua Li Fuxing Zhang Zhifeng Xu College of Chemistry and Material Science Hengyang Normal University Key Laboratory of Functional Organo-metallic Materials of Hengyang Normal University College of Hunan ProvinceHengyangHunan 421008China

Diruthenium ethynyl complexes 1--3 （1： 1,5-dithia-s-indacene-4,8-dione; 2： 4,8-diethoxybenzo[1,2-b：4,5- b＇]dithiophene; 3： 4,8-didodecyloxybenzo[1,2-b：4,5-b＇]dithiophene） have been synthesized by incorporating the re- spective conjugated heterocyclic spacer and characterized by NMR and elemental analysis. The effects of bridge ligands＇ properties on electronic coupling between redox-active ruthenium terminal groups were investigated by electrochemistry, UV/vis/near-IR and IR spectroelectrochemistry combined with density functional theory （DFT） and time-dependent DFT calculations. Electrochemistry results indicated that complexes 1--3 exhibit two fully re- versible oxidation waves, and complexes 2 and 3 with electron-rich and π-conjuagted bridge ligands are character- ized by excellent electrochemical properties. Furthermore, the larger v（C≡C） separation from the IR spectroelec- trochemical results of 2 and 3 and the intense NIR absorption features of singly oxidized species 2＋ and 3＋ re- vealed that their molecular skeletons have superior abilities to delocalize the positive charge. The spin density dis- tribution from DFT calculations proved the conclusions of this study.

关键词： bridge ligands ruthenium terminal groups spectroelectrochemistry electronic coupling

Total gaseous mercury emissions from mercury-enriched soil in Guizhou, China

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Chinese Journal Of Geochemistry 2006年第B8期25卷 243-244页

作者： Xinbin FENG Shaofeng WANG Guangle QIU Yamin HOU shunlin tang State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China

Total gaseous mercury emissions from mercury-enriched soil in Guizhou, China

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Acta Geochimica 2006年第S1期 243-244页

作者： Xinbin FENG, Shaofeng WANG, Guangle QIU, Yamin HOU, shunlin tang State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China

Different mercury species in the atmosphere over the municipal solid waste landfills

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Chinese Journal Of Geochemistry 2006年第B8期25卷 238-238页

作者： Zhonggen LI Xinbin FENG Ping LI shunlin tang Shaofeng WANG Xuewu FU Wei ZHENG Lihai SHANG State Key Laboratory of Environmental Geochemistry Instttute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China

Preliminary evaluation of the long-term GLASS albedo product

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International Journal of Digital Earth 2013年第S01期6卷 69-95页

作者： Qiang Liua Lizhao Wang Ying Qu Nanfeng Liu Suhong Liu Hairong tang shunlin Liang College of Global Change and Earth System Science Beijing Normal UniversityBeijingChina State Key Laboratory of Remote Sensing Science Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing Applications of Chinese Academy of SciencesBeijingChina Institute of Remote Sensing Applications Chinese Academy of SciencesBeijingChina School of Geography Beijing Normal UniversityBeijingChina Institute of Electronics Chinese Academy of SciencesBeijingChina Department of Geographical Sciences University of MarylandCollege ParkMDUSA

Land surface albedo is an important parameter to describe the radiant forcing in the climate system.A long-time series of global albedo products is needed to understand the mechanism of climate *** to support global change and Earth system studies,GLASS(Global LAnd Surface Satellites)provides long-term global land surface albedo product from 1981 to 2010,which are generated from multisource remote sensing data and newly developed *** is critical to assess the quality of the GLASS product when it is released to the *** paper first introduced the algorithms and then analyzed the integrity,accuracy,and robustness of the GLASS albedo *** results show that the GLASS albedo product is a gapless,long-term continuous,and self-consistent data-set with an accuracy similar to that of the widely acknowledged MODIS MCD43 *** quality flag,which is provided along with the black-sky and white-sky albedo,gives a pertinent indication of the expected uncertainty in the product.

关键词： land surface broadband albedo validation GLASS MODIS

A long-term Global LAnd Surface Satellite(GLASS)data-set for environmental studies

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International Journal of Digital Earth 2013年第S01期6卷 5-33页

作者： shunlin Liang Xiang Zhao Suhong Liu Wenping Yuan Xiao Cheng Zhiqiang Xiao Xiaotong Zhang Qiang Liu Jie Cheng Hairong tang Yonghua Qu Yancheng Bo Ying Qu Huazhong Ren Kai Yu John Townshend The State Key Laboratory of Remote Sensing Science Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing Applications of Chinese Academy of SciencesBeijingChina College of Global Change and Earth System Sciences Beijing Normal UniversityBeijingChina Department of Geographical Sciences University of MarylandMDUSA School of Geography Beijing Normal UniversityBeijingChina Institute of Electronics Chinese Academy of SciencesBeijingChina

Recently,five Global LAnd Surface Satellite(GLASS)products have been released:leaf area index(LAI),shortwave broadband albedo,longwave broadband emissivity,incident short radiation,and photosynthetically active radiation(PAR).The first three products cover the years 19822012(LAI)and 19812010(albedo and emissivity)at 15 km and 8-day resolutions,and the last two radiation products span the period 20082010 at 5 km and 3-h *** products have been evaluated and validated,and the preliminary results indicate that they are of higher quality and accuracy than the existing *** particular,the first three products have much longer time series,and are therefore highly suitable for various environmental *** paper outlines the algorithms,product characteristics,preliminary validation results,potential applications and some examples of initial analysis of these products.

关键词： earth observation global environmental change remote sensing

首日涨停板制度与IPO解禁效应——基于投机泡沫视角的分析

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金融研究 2020年第4期 186-206页

作者：唐斯圆宋顺林清华大学经济管理学院北京100084 中央财经大学会计学院北京100081

本文以2006-2016年上市的1397家公司为研究样本,实证检验了首日涨停板制度对新股解禁效应的影响。结果发现:首日涨停板制度实施期间发行的新股,解禁时有显著更差的市场表现,[-30,30]窗口期间的超额回报低至-8.43%,同时有更小的异常交易... 详细信息

本文以2006-2016年上市的1397家公司为研究样本,实证检验了首日涨停板制度对新股解禁效应的影响。结果发现:首日涨停板制度实施期间发行的新股,解禁时有显著更差的市场表现,[-30,30]窗口期间的超额回报低至-8.43%,同时有更小的异常交易量和异常波动率;新股上市时股价高估程度越大、投资者情绪越高,首日涨停板制度对解禁效应的影响越强。上述结果支持了Hong et al.(2006)提出的"解禁与资产泡沫破灭"的理论,即首日涨停板制度导致新股发行后投机泡沫累积,投机泡沫破灭导致解禁时更大幅度的股价下跌。本文的研究结论补充了首日涨停板制度后果的文献,并对防范金融风险和完善新股市场化改革具有一定的政策参考价值。

关键词：新股解禁投机泡沫首日涨停板

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首日价格管制与新股投机:抑制还是助长?

管理世界 2019年第1期35卷 211-224页

作者：宋顺林唐斯圆中央财经大学会计学院清华大学经济管理学院

新股首日涨停板制度(首日价格管制)类似于向上熔断机制,目的是为了抑制投资者"炒新"。但理论上,涨停板制度可能抑制新股投机,也可能反向助长投机。本文以2006～2017年的2109家IPO公司为样本,研究发现:首日价格管制导致IPO溢价更高;新股... 详细信息

新股首日涨停板制度(首日价格管制)类似于向上熔断机制,目的是为了抑制投资者"炒新"。但理论上,涨停板制度可能抑制新股投机,也可能反向助长投机。本文以2006～2017年的2109家IPO公司为样本,研究发现:首日价格管制导致IPO溢价更高;新股价值不确定性越大,首日价格管制对IPO溢价的影响越大;首日价格管制期间,投资者情绪对IPO溢价的影响更大。此外,首日价格管制还放大了新股上市后的股票换手率和股价波动率,导致新股上市后的股价短期内进一步非理性攀升;但长期来看,新股的换手率和波动率会回归正常水平,新股的股价也会向内在价值回归。最后,本文基于PSM+DID的方法进一步验证了文章的主要结果,结论依然成立。

关键词：首日价格管制 IPO溢价 IPO 价值不确定性新股投机投资者“炒新”