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| 1 | High precision topographic data on Lop Nor basin's Lake 'Great Ear' ? and the timing of its becoming a dry salt lake显示文摘High precision elevation measurements using DGPS were carried out along three representative tran- sects for the 'Great Ear' area, a dry salt lake within the Lop Nor basin. Results indicate that the Lop Nor basin is only 5.2 m deep and its lowest point occurs at the center of the 'Great Ear'. In addition, the basin is asymmetric - steeper in the southwest (0.19‰) and gentler in the northeast (0.09‰). Points along the same 'Great Ear' ring were found to have an identical elevation value, but different when from different ones (lower towards the center). The spacing of the 'Great Ear' rings was found to be closely related with the surface steepness. The closer the 'Great Ear' rings are spaced, the steeper the ground surface, and vice versa. These findings support the argument that the 'Great Ear' rings are the former shoreline trails left behind by Lop Nor water during the last few episodes of recession towards its total dry up. A comprehensive analysis of the high precision elevation data, historical accounts, aerial and satellite photographs and imagery, and official topographic maps of the study area suggests that the 'Great Ear' area in the Lop Nor basin was incorrectly mapped as being covered by a great body of water on the 1963 topographic maps. A re-interpretation of the 1958 aerial photographs and newer remote sensing imagery indicated that the 'Great Ear' ring structure was already in place in 1958 and it continued to appear on the subsequent remote sensing data without any major changes. It is estimated that lake water in the 'Great Ear' area of the Lop Nor basin disappeared between the late 1930s and early 1940s. | LI BaoGuo MA LiChun JIANG PingAn DUAN ZengQiang SUN DanFeng QIU HongLie ZHONG JunPing WU HongQi | 2008 | Chinese Science Bulletin2008，53，6： | 11 |
| 2 | Parametric Problems in Power System Analysis:Recent Applications of Polynomial Approximation Based on Galerkin Method显示文摘In power systems, there are many uncertainty factors such as power outputs of distributed generations and fluctuations of loads. It is very beneficial to power system analysis to acquire an explicit function describing the relationship between these factors(namely parameters) and power system states(or performances). This problem, termed as parametric problem(PP) in this paper, can be solved by Galerkin method,which is a powerful and mathematically rigorous method aiming to seek an accurate explicit approximate function by projection techniques. This paper provides a review of the applications of polynomial approximation based on Galerkin method in power system PPs as well as stochastic problems. First, the fundamentals of polynomial approximation and Galerkin method are introduced. Then, the process of solving three types of typical PPs by polynomial approximation based on Galerkin method is elaborated. Finally, some application examples as well as several potential applications of power system PPs solved by Galerkin method are presented, namely the probabilistic power flow, approximation of static voltage stability region boundary, and parametric time-domain dynamic simulation. | Hao Wu Danfeng Shen Bingqing Xia Yiwei Qiu Yongzhi Zhou Yonghua Song | 2021 | Journal of Modern Power Systems and Clean Energy2021，9，1： | 4 |
| 3 | In situ growth of mesoporous NiO nanoplates on a graphene matrix as cathode catalysts for rechargeable lithium air batteries显示文摘 | Qiu Danfeng Bu Gang Zhao Bin | 2015 | Materials Letters2015，141，2： | 1 |
| 4 | MnO nanoparticles anchored on graphene nanosheets via in situ carbothermal reduction as high-performance anode materials for lithium-ion batteries显示文摘 | Qiu Danfeng Ma Luyao Zheng Mingbo | 2012 | Materials Let- ters2012，84，： | 1 |
| 5 | The epidemiology of civilian inpatients’ burns in Chinese military hospitals, 2001–2007显示文摘 | Yuan Yao Yuncheng Liu Jihong Zhou Jun Qiu Liang Zhang Danfeng Yuan Liyu Zhou Zhengguo Wang Jiashun Ren Jianguo Shi | 2011 | Burns2011，，6： | 1 |
| 6 | Graphene anchored with mesoporous NiO nanoplates as anode material for lithium-ion batteries显示文摘 | Danfeng Qiu Zijing Xu Mingbo Zheng Bin Zhao Lijia Pan Lin Pu Yi Shi | 2012 | Journal of Solid State Electrochemistry2012，，5： | 1 |
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