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	Channel adjustments in response to the operation of large dams: The upper reach of the lower Yellow River SCI/SSCI论文 OAI收割 2012 作者: Li Y.; Li Y. 收藏 \| 浏览/下载：27/0 \| 提交时间：2012/09/04 Lower Yellow River River channel adjustment Dam impacts At-a-station hydraulic geometry Bankfull hydraulic geometry Channel-forming discharge suspended-sediment transport station hydraulic geometry effective discharge hydrologic regime flow characteristics capacity downstream climate-change impacts basin reservoir
	Channel adjustments in response to the operation of large dams: The upper reach of the lower Yellow River 期刊论文 OAI收割 GEOMORPHOLOGY, 2012, 卷号: 147, 期号: SI, 页码: 35-48 Ma, Yuanxu(马元旭); Huang, HQ; Nanson, GC; Li, Y; Yao, WY 收藏 \| 浏览/下载：33/0 \| 提交时间：2012/05/16 Lower Yellow River River channel adjustment Dam impacts At-a-station hydraulic geometry Bankfull hydraulic geometry Channel-forming discharge
	High-performance soft x-ray spectromicroscopy beamline at SSRF (EI CONFERENCE) 会议论文 OAI收割作者: Xue C.; Chen J.; Wang Y.; Wang Y.; Wang Y. 收藏 \| 浏览/下载：32/0 \| 提交时间：2013/03/25 The Shanghai Synchrotron Radiation Facility (SSRF) is the first third-generation synchrotron facility in China and operated at an electron energy of 3.5 GeV. One of the seven beamlines in the first construction phase is devoted to soft x-ray spectromicroscopy and is equipped with an elliptically polarized undulator light source a plane grating monochromator and a scanning transmission x-ray microscope end station. Initial results reveal the high performance of this beamline with an energy resolving power estimated to be over 10 000 at the argon L-edge and a spatial resolution better than 30 nm. 2010 American Institute of Physics.
	Design and analysis of large spaceborne light-weighted primary mirror and its support system (EI CONFERENCE) 会议论文 OAI收割 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China Yan Y.; Jin G.; Yang H.-B. 收藏 \| 浏览/下载：17/0 \| 提交时间：2013/03/25 With the development of the resolution of spaceborne remote sensor the diameter of the primary mirror of spaceborne telescope becomes larger and larger. The distortion of primary mirror which is influenced by the mirror material structure self-weight support system and temperature environment affects optical image quality finally. In this paper an on-axis TMA high-resolution Cassegrain optical payload with a primary mirror whose diameter is 650mm was designed and the effects of the influence factors of the distortion acts on the on-axis TMA optical system primary mirror had been analyzed by means of Finite Element Analysis. During work the technology of the primary mirror design had been summarized and general consideration of the primary mirror design technology also had been described at the same time. Considering the telescope manufacture and work station a reasonable and optimal structure of the primary mirror sub-assembly is taken finally. In the end the distortion of the primary mirror during its fabrication station and work station had been analyzed by integrated Finite Element Analysis Method. The results implicated the synthesis profile error (P-V value) for the primary mirror is less than /10 and all the indexes of the primary mirror satisfy the requirements of the optical system.
	A new high-precision measurement system used in the image calibration of large-sized photographic instrument (EI CONFERENCE) 会议论文 OAI收割 Optical Design and Testing II, November 8, 2004 - November 11, 2004, Beijing, United states 作者: Li Y.; Liu Z.; Li Y.; Li Y.; Li Y. 收藏 \| 浏览/下载：18/0 \| 提交时间：2013/03/25 The purpose of characterizing the image of large-sized photographic instrument is to make the directionality of three coordinate axises in the three-dimensional coordinate of the image and the directionality of three axises of coordinate in the frame of axes of the instrument keep the same direction. This problem was solved by a high-precision measurement system composed of double-theodolite and a set of communication system. Two cube prisms will be respectively placed on the image surface and the instrument. Every cube prism will stand for a three-dimensional coordinate from the image surface or the instrument. As a result the interdependence of both coordinates from the image surface and the instrument can be obtained by measuring the interdependence of the both cube prisms with autocollimation survey axiom. In the survey system two high-precision stations TDA5005 from Leica Company will be selected as double-theodolite and the interdependence of both coordinates can be achieved by moving the station only at one time. Therefore this measurement system is a high efficient and high-precision surveying method to the image calibration of the large-sized photographic instrument. Based on the experiment its measuring accuracy can reach arc-second level.