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浏览/检索结果: 共21条，第1-10条 帮助

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A population genetics perspective on the evolutionary histories of three clonal, endemic, and dominant grass species of the Qinghai-Tibet Plateau: Orinus (Poaceae) 期刊论文  OAI收割
ECOLOGY AND EVOLUTION, 2019, 卷号: 9, 期号: 10
作者:  Liu, Yuping;  Harris, A. J.
  |  收藏  |  浏览/下载：60/0  |  提交时间：2019/11/26
How context features modulate the involvement of the working memory system during discourse comprehension 期刊论文  OAI收割
NEUROPSYCHOLOGIA, 2018, 卷号: 111, 期号: -, 页码: 36-44
作者:  Yang, Xiaohong;  Zhang, Xiuping;  Yang, Yufang;  Lin, Nan;  Nan Lin
  |  收藏  |  浏览/下载：44/0  |  提交时间：2018/05/22
Spatio-temporal variation of spring phenology in Tibetan Plateau and its linkage to climate change from 1982 to 2012 SCI/SSCI论文  OAI收割
2016
作者:  Ding M. J.;  Li, L. H.;  Nie, Y.;  Chen, Q.;  Zhang, Y. L.
收藏  |  浏览/下载：36/0  |  提交时间：2016/12/16
Spatio-temporal variation of spring phenology in Tibetan Plateau and its linkage to climate change from 1982 to 2012 SCI/SSCI论文  OAI收割
2016
作者:  Ding M. J.;  Li, L. H.;  Nie, Y.;  Chen, Q.;  Zhang, Y. L.
  |  收藏  |  浏览/下载：29/0  |  提交时间：2017/11/09
Comparison and analysis of QTLs for grain and hull thickness related traits in two recombinant inbred line (RIL) populations in rice (Oryza sativa L.) 期刊论文  OAI收割
JOURNAL OF INTEGRATIVE AGRICULTURE, 2016, 卷号: 15, 期号: 11, 页码: 2437-2450
作者:  Yao Xiaoyun;  Wang Jiayu;  Liu Jin;  Wang Wei;  Yang Shenglong
  |  收藏  |  浏览/下载：23/0  |  提交时间：2021/02/02
Comparison and analysis of QTLs for grain and hull thickness related traits in two recombinant inbred line (RIL) populations in rice (Oryza sativa L.) 期刊论文  OAI收割
JOURNAL OF INTEGRATIVE AGRICULTURE, 2016, 卷号: 15, 期号: 11, 页码: 2437-2450
作者:  Yao Xiaoyun;  Wang Jiayu;  Liu Jin;  Wang Wei;  Yang Shenglong
  |  收藏  |  浏览/下载：17/0  |  提交时间：2021/02/02
Timing of photoperiodic competency causes phenological mismatch in balsam poplar (Populus balsamifera L.) SCI/SSCI论文  OAI收割
2013
Soolanayakanahally R. Y.; Guy R. D.; Silim S. N.; Song M. H.
收藏  |  浏览/下载：32/0  |  提交时间：2014/12/24
Inspection focus technology of space tridimensional mapping camera based on astigmatic method (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
作者:  Wang Z.;  Wang Z.;  Zhang L.;  Zhang L.
收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25
The CCD plane of the space tridimensional mapping camera will be deviated from the focal plane(including the CCD plane deviated due to camera focal length changed)  under the condition of space environment and vibration  impact when satellite is launching  image resolution ratio will be descended because defocusing. For tridimensional mapping camera  principal point position and focal length variation of the camera affect positioning accuracy of ground target  conventional solution is under the condition of vacuum and focusing range  calibrate the position of CCD plane with code of photoelectric encoder  when the camera defocusing in orbit  the magnitude and direction of defocusing amount are obtained by photoelectric encoder  then the focusing mechanism driven by step motor to compensate defocusing amount of the CCD plane. For tridimensional mapping camera  under the condition of space environment and vibration  impact when satellite is launching  if the camera focal length changes  above focusing method has been meaningless. Thus  the measuring and focusing method was put forward based on astigmation  a quadrant detector was adopted to measure the astigmation caused by the deviation of the CCD plane  refer to calibrated relation between the CCD plane poison and the asrigmation  the deviation vector of the CCD plane can be obtained. This method includes all factors caused deviation of the CCD plane  experimental results show that the focusing resolution of mapping camera focusing mechanism based on astigmatic method can reach 0.25 m. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Temperature gradients effect on surface test with high precise interferometer (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者:  Gu Y.-Q.;  Yang H.-J.;  Sui Y.-X.;  Zhang J.;  Zhang J.
收藏  |  浏览/下载：33/0  |  提交时间：2013/03/25
In high precise surface testing  temperature stability and uniformity are of paramount importance to the high accuracy of test results. Micro-temperature variation and temperature gradients not only cause the change of the air refractive index and lead to the optical path variation in interferometer cavity  but also result in deformation of the tested surface itself  which always brings about errors to the test results. Temperature effects on the interferometer cavity and the tested surface are analyzed from the axial and radial directions in this letter. Temperature model of the interferometer cavity and the tested lens are established and quantitative calculations and diagram of test results versus temperature and lens dimension are provided. It shows that temperature gradients effect increase with the length of the interferometer and the dimension of the tested lens. The interferometer cavity is mainly affected by radial temperature gradients while the tested lens is mainly affected by the axial temperature gradients. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Periodical characteristics of the geomagnetic secular variation and length-of-day variation 期刊论文  OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2008, 卷号: 51, 期号: 2, 页码: 369-375
作者:  Kang Guo-Fa;  Bai Chun-Hua;  Gao Guo-Ming
  |  收藏  |  浏览/下载：25/0  |  提交时间：2018/09/26