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治疗过敏性紫癜新药江花-8味加减方的开发研究
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《内蒙古医学院学报》 2005年第1期i016-i016,共1页
项目负责人:斯华,生于1959-12-20,农工党员,内蒙古医学院中医药系紫癜内科,教研室医师,副教授,副主任医师,硕士研究生导师,内蒙古自治区医学学会会员,
关键词 过敏性紫癜 江花-8味 斯华 蒙药治疗
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Two Step Chemical Vapor Deposition of In2Se3/MoSe2 van der Waals Heterostructures
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作者 陈玉林 李铭领 +6 位作者 吴一鸣 李思嘉 林岳 杜冬雪 丁怀义 潘楠 王晓平 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2017年第3期325-332,I0002,共9页
Two-dimensional transition metal dichalcogenides heterostructures have stimulated wide in- terest not only for the fundamental research, but also for the application of next generation electronic and optoelectronic de... Two-dimensional transition metal dichalcogenides heterostructures have stimulated wide in- terest not only for the fundamental research, but also for the application of next generation electronic and optoelectronic devices. Herein, we report a successful two-step chemical vapor deposition strategy to construct vertically stacked van der Waals epitaxial In2Se3/MoSe2 heterostructures. Transmission electron microscopy characterization reveals clearly that the In2Se3 has well-aligned lattice orientation with the substrate of monolayer MoSe2. Due to the interaction between the In2Se3 and MoSe2 layers, the heterostructure shows the quench- ing and red-shift of photoluminescence. Moreover, the current rectification behavior and photovoltaic effect can be observed from the heterostructure, which is attributed to the unique band structure alignment of the heterostructure, and is further confirmed by Kevin probe force microscopy measurement. The synthesis approach via van der Waals epitaxy in this work can expand the way to fabricate a variety of two-dimensional heterostructures for potential applications in electronic and optoelectronic devices. 展开更多
关键词 van der Waals heterostructures Chemical vapor deposition In2Sea/MoSe2 Kevin probe force microscopy n+-n junction
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Spatial-temporal Changes of Vegetation Cover in Guizhou Province, Southern China 被引量:23
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作者 TIAN Yichao BAI Xiaoyong +2 位作者 WANG Shijie QIN Luoyi LI Yue 《Chinese Geographical Science》 SCIE CSCD 2017年第1期25-38,共14页
Guizhou Province is an important karst area in the world and a fragile ecological area in China. Ecological risk assessment is very necessary to be conducted in this region. This study investigates different character... Guizhou Province is an important karst area in the world and a fragile ecological area in China. Ecological risk assessment is very necessary to be conducted in this region. This study investigates different characteristics of the spatial-temporal changes of vegetation cover in Guizhou Province of Southern China using the data set of SPOT VEGETATION(1999–2015) at spatial resolution of 1-km and temporal resolution of 10-day. The coefficient of variation, the Theil-Sen median trend analysis, and the Mann-Kendall test are used to investigate the spatial-temporal change of vegetation cover and its future trend. Results show that: 1) the spatial distribution pattern of vegetation cover in Guizhou Plateau is high in the east whereas low in the west. The average annual normalized difference vegetation index(NDVI) from west to east is higher than that from south to north. 2) Average annual NDVI improved obviously in the past 17 years. The growth rate of average annual NDVI is 0.028/10 yr, which is slower than that of vegetation in the country(0.048/10 yr) from 1998 to 2007. Average annual NDVI in karst area is lower than that in non-karst area. However, the growing rate of average annual NDVI in karst area(0.030/10 yr) is faster than that in non-karst area(0.023/10 yr), indicating that vegetation coverage increases more rapidly in karst area. 3) Vegetation coverage in the study area is stable overall, but fluctuates in the local scales. 4) Vegetation coverage presents a continuous increasing trend. The Hurst exponent of NDVI in different vegetation types has an obvious threshold in various elevations. 5) The proportion of vegetation cover with sustainable increase is higher than that of vegetation cover with sustainable decrease. The improvement in vegetation cover may expand to most parts of the study area. 展开更多
关键词 vegetation cover spatial-temporal change trends analysis normalized difference vegetation index(NDVI) Hurst exponent Guizhou Province China
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An Education through Nature That Goes beyond Nature: Wordsworth's Prelude of 1799
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作者 ZHAO Yu-hong 《Sino-US English Teaching》 2007年第2期64-68,共5页
Wordsworth's Prelude of 1799 is presenting a poetic voice of education through nature that goes beyond nature. This essay considers the cycles and developments in the poem under the four themes of Unity; Impression; ... Wordsworth's Prelude of 1799 is presenting a poetic voice of education through nature that goes beyond nature. This essay considers the cycles and developments in the poem under the four themes of Unity; Impression; Time, Age and Season; Revolution. 展开更多
关键词 unity IMPRESSION time age SEASON revolution
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Transnational Mathematics and Movements: Shiingshen Chern, Hua Luogeng, and the Princeton Institute for Advanced Study from World War II to the Cold War 被引量:2
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作者 Zuoyue Wang Guo Jinhai 《Chinese Annals of History of Science and Technology》 2019年第2期118-165,共48页
This paper reconstructs,based on American and Chinese primary sources,the visits of Chinese mathematicians Shiing-shen Chern陈省身(Chen Xingshen)and Hua Luogeng华罗庚(Loo-Keng Hua)4 to the Institute for Advanced Study... This paper reconstructs,based on American and Chinese primary sources,the visits of Chinese mathematicians Shiing-shen Chern陈省身(Chen Xingshen)and Hua Luogeng华罗庚(Loo-Keng Hua)4 to the Institute for Advanced Study in Princeton in the United States in the 1940s,especially their interactions with Oswald Veblen and Hermann Weyl,two leading mathematicians at the IAS.It argues that Chern’s and Hua’s motivations and choices in regard to their transnational movements between China and the US were more nuanced and multifaceted than what is presented in existing accounts,and that socio-political factors combined with professional-personal ones to shape their decisions.The paper further uses their experiences to demonstrate the importance of transnational scientific interactions for the development of science in China,the US,and elsewhere in the twentieth century. 展开更多
关键词 Shiing-shen Chern Chen Xingshen Hua Luogeng Loo-Keng Hua Institute for Advanced Study Princeton Oswald Veblen Hermann Weyl J.Robert Oppenheimer mathematics transnational science China United States World War II Cold War
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Analysis of the Motion and Deformation Characteristics along the Zhangjiakou-Bohai Fault 被引量:1
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作者 Chen Changyun 《Earthquake Research in China》 CSCD 2017年第1期66-78,共13页
We have collected GPS data in the period of 1999-2007 from the Crustal Motion Observation Network of China along the Zhangjiakou-Bohai fault and its adjacent regions to study the characteristics of present-day crustal... We have collected GPS data in the period of 1999-2007 from the Crustal Motion Observation Network of China along the Zhangjiakou-Bohai fault and its adjacent regions to study the characteristics of present-day crustal horizontal motion velocities in the research zone.Strain rate components are computed in the spheric coordinate system by the least square collocation method.According to the spatial distribution of the principal strain rate,dilation rate and maximum shear strain rate derived from GPS measurements,this paper analyses the deformation of the subordinary faults of the Zhangjiakou-Bohai fault.The principal compression strain rates are apparently greater than the principal extension strain rates.The larger shear strain rate is mainly in and around the Xianghe,Wenan and Tangshan areas in Hebei Province.According to the profiles across different segments of the Zhangjiakou-Bohai fault,the three segments glong the Zhangjiakou-Bohai fault show an obviously left-lateal strike-slip and compression characteristics.By analysis of the motion characteristics of the blocks,e.g.the Yanshan block,North China Plain block,Ordos block,and Ludong-Huanghai block in and around the North China region,this paper speculates that the dynamics of the motion styles of Zhangjiakou-Bohai fault may directly come from the relative movement between the Yanshan block and the North China plain block,and the ultimate dynamics may be the results of the collison between Indian plate and Eurasian plate,and the persistent northeastward extrusion of the Indian plate. 展开更多
关键词 Zhangjiakou-Bohai fault zone Crustal deformation Velocity filed Strain rate filed Left-lateral strike-slip
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Heading the Wrong Way?
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作者 Clifford A.Kiracofe 《Beijing Review》 2017年第18期34-35,共2页
Washington needs a change of mentality if U.S.-Russia relations are to develop constructivelyWill Donald Trump keep his campaign promise for better relations with Russia?Washington’s Cold War mindset appears to be p... Washington needs a change of mentality if U.S.-Russia relations are to develop constructivelyWill Donald Trump keep his campaign promise for better relations with Russia?Washington’s Cold War mindset appears to be perpetual despite the election rhetoric and a brand new White House. 展开更多
关键词 Russia election Washington campaign rhetoric Moscow NATO promise thinking despite
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