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浏览/检索结果: 共40条，第1-10条 帮助

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Cenozoic clockwise rotation of the northeastern Tibetan Plateau: Paleomagnetic evidence from volcanic sequences in the West Qinling Mountain 期刊论文  OAI收割
GLOBAL AND PLANETARY CHANGE, 2023, 卷号: 224, 页码: 14
作者:  Wang, Weitao;  Huang, Rong;  Wu, Ying;  Liu, Kang;  Zhang, Zhuqi
  |  收藏  |  浏览/下载：8/0  |  提交时间：2024/08/22
Sample neutron irradiation with the Min Jiang Testing Reactor (MJTR): implications for high-precision 40Ar/39Ar dating 期刊论文  OAI收割
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 2023, 卷号: 38, 期号: 8, 页码: 1540-1548
作者:  Zhang, Wan-Feng;  Li, Jun-Jie;  Zheng, De-Wen;  Sun, Shou-Hua;  Guo, Yu-Fei
  |  收藏  |  浏览/下载：9/0  |  提交时间：2024/09/26
Late Cenozoic intra-plate basalts of the Greater Khingan Range in NE China and Khangai Province in Central Mongolia 期刊论文  OAI收割
GONDWANA RESEARCH, 2018, 卷号: 63, 页码: 65-84
作者:  Meng, Fan-chao;  Safonova, Inna;  Chen, Shuang-shuang;  Rioual, Patrick
  |  收藏  |  浏览/下载：50/0  |  提交时间：2019/03/04
Indosinian gold mineralization and magmatic-hydrothermal evolution of the Hadamengou gold deposit at the northern margin of the North China Craton: Constraints from K-feldspar laser Ar-40/Ar-39 dating 期刊论文  OAI收割
JOURNAL OF GEOCHEMICAL EXPLORATION, 2018, 卷号: 190, 页码: 314-324
作者:  Jia, Sanshi;  Wang, Ende;  Fu, Jianfei;  Wu, Lin;  Zhao, Chunfu
  |  收藏  |  浏览/下载：54/0  |  提交时间：2018/09/28
Geochronology and geochemistry of late Jurassic adakitic intrusions and associated porphyry Mo-Cu deposit in the Tongcun area, east China: Implications for metallogenesis and tectonic setting 期刊论文  OAI收割
ORE GEOLOGY REVIEWS, 2017, 卷号: 80, 页码: 289-308
作者:  Tang, Yanwen;  Li, Xiaofeng;  Xie, Yuling;  Liu, Liang;  Lan, Tingguang
  |  收藏  |  浏览/下载：32/0  |  提交时间：2017/11/21
Geochronology and geochemistry of late Jurassic adakitic intrusions and associated porphyry Mo–Cu deposit in the Tongcun area, east China: Implications for metallogenesis and tectonic setting 期刊论文  OAI收割
Ore Geology Reviews, Ore Geology Reviews, 2017, 2017, 卷号: 80, 80, 页码: 289-308, 289-308
作者:  Yanwen Tang;  Xiaofeng Li;  Yuling Xie;  Liang Liu;  Tingguang Lan
  |  收藏  |  浏览/下载：40/0  |  提交时间：2018/12/06
The certified results of ZMT04 muscovite reference material utilized for Ar-40/Ar-39 isotopic geochronological research on Early precambrian rocks in China 期刊论文  OAI收割
ACTA PETROLOGICA SINICA, 2013, 卷号: 29, 期号: 8, 页码: 2759-2774
作者:  Sang HaiQing;  Wang Fei;  Gong JunFeng;  Zhou Jing
  |  收藏  |  浏览/下载：15/0  |  提交时间：2018/09/26
Fabrication of high-efficiency ultraviolet blazed gratings by use of direct Ar2-CHF3 ion-beam etching through a rectangular photoresist mask (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies, May 24, 2011 - May 26, 2011, Beijing, China
Tan X.
收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25
In ultraviolet spectroscopy  groove irregularity and surface roughness of nanometer magnitude can cause a significant loss of diffraction efficiency. Therefore  there is a constant need to improve the diffraction efficiency. A blazed grating can concentrate most of the light intensity into a desired diffraction order  it is important to control the groove shape precisely  so it is the optimum choice among gratings of different kinds of profile. As the operating wavelength of most UV spectral applications is less than 200 nm  especially the blaze angle and the apical angle. We have presented a direct shaping method to fabricate EUV blazed gratings by using an ion-beam mixture of Ar+ and CHF2 +to etch K9 glass with a rectangular photoresist mask. With this method  the required blaze angle is small  we have succeeded in fabricating well-shaped UV blazed gratings with a 1200 line/mm groove density and 8.54 blaze angles and 1200 line/mm groove density and 11.68 blaze angles  and the metrical efficiency is about 81% and 78%. The good performance of the gratings was verified by diffraction efficiency measurements. When one uses the etching model  the conditions on the ion-beam grazing incident angle and the CHF3partial pressure should be noted. Besides  since the etched groove shape depends on the aspect ratio of the photoresist mask ridge  if we wish to fabricate larger gratings with this method  we must improve the uniformity of the photoresist mask before ion-beam etching. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
Metamorphic evolution of the Tethyan Himalayan flysch in SE Tibet 期刊论文  OAI收割
GROWTH AND COLLAPSE OF THE TIBETAN PLATEAU 丛书: Geological Society Special Publication, 2011, 卷号: 353, 期号: 0, 页码: 45-69
Dunkl I (Dunkl I.); Antolin B (Antolin B.); Wemmer K (Wemmer K.); Rantitsch G (Rantitsch G.); Kienast M (Kienast M.); Montomoli C (Montomoli C.); Ding L (丁林); Carosi R (Carosi R.); Appel E (Appel E.); El Bay R (El Bay R.); Xu Q (许强); Von Eynatten H (Von Eynatten H.)
收藏  |  浏览/下载：39/0  |  提交时间：2012/05/14
Initiation of slip along the Xianshuihe fault zone, eastern Tibet, constrained by K/Ar and fission-track ages 期刊论文  OAI收割
INTERNATIONAL GEOLOGY REVIEW, 2009, 卷号: 51, 期号: 12, 页码: 1121-1131
作者:  Wang, Shifeng;  Fang, Xiaomin;  Zheng, Dewen;  Wang, Erchie
  |  收藏  |  浏览/下载：16/0  |  提交时间：2018/09/26