中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共8条,第1-8条 帮助

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Climate warming reshapes vegetation responses in China from temperature to precipitation 期刊论文  OAI收割
GISCIENCE & REMOTE SENSING, 2026, 卷号: 63, 期号: 1, 页码: 21
作者:  
Wang, Meihong;  Zhao, Hui;  Wei, Da;  Chen, Zhaojie
  |  收藏  |  浏览/下载:8/0  |  提交时间:2026/05/07
Induction of beta, epsilon-carotene-3, 3 '-diol (lutein) production in green algaeChlorella salinawith airlift photobioreactor: interaction of different aeration and light-related strategies 期刊论文  OAI收割
BIOMASS CONVERSION AND BIOREFINERY, 2020, 页码: 10
作者:  
Gayathri, S.;  Rajasree, S. R. Radhika;  Suman, T. Y.;  Aranganathan, L.;  Thriuganasambandam, R.
  |  收藏  |  浏览/下载:48/0  |  提交时间:2020/12/01
A comparative study on electrical properties of dye-sensitized solar cell and silicon photodiode under colored light for optical sensor applications 期刊论文  OAI收割
SENSORS AND ACTUATORS A-PHYSICAL, 2018, 卷号: 275, 页码: 148, 153
作者:  
Wang, Wei;  Yuan, Huihui;  Zhang, Yumei;  Xie, Junjie;  Xu, Di
  |  收藏  |  浏览/下载:60/0  |  提交时间:2018/12/28
Chirp estimation of PZT for integrating-bucket method (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:  
Zhang J.;  Liu W.;  Zhang J.;  Zhang J.
收藏  |  浏览/下载:53/0  |  提交时间:2013/03/25
The nonlinear response of the PZT for the integrating bucket method is studied by our proposed method: discrete chirp Fourier transform (DCFT) and maximum likelihood estimation (MLE) techniques for the integrating bucket method. Based on the signal processing theory  the intensity obtained from CCD is processed by the DCFT and thus nonlinear response and chirp coefficient of the PZT can be coarsely estimated. This is followed by the MLE method  in which an iterative optimization process is complemented for accurately estimating the nonlinear response and chirp coefficient of the PZT. One key advantage of the proposed method is that not only the nonlinear response and chirp coefficient of the PZT can be acquired  but also initial phase acquired. Our method is tested by simulating conditions under which a certain magnitude of nonlinearity is assumed. Nonlinear response attained by the DCFT is compared to that attained by the MLE  and a difference between the actual nonlinear response of the PZT and our accurate estimation by the proposed method is revealed. Several factors that will have influence on the nonlinear response of the PZT are discussed. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Study on the effect of measuring methods on incident photon-to-electron conversion efficiency of dye-sensitized solar cells by home-made setup 期刊论文  OAI收割
REVIEW OF SCIENTIFIC INSTRUMENTS, 2010, 卷号: 81, 期号: 10
Guo, XZ; Luo, YH; Zhang, YD; Huang, XC; Li, DM; Meng, QB
收藏  |  浏览/下载:48/0  |  提交时间:2013/09/24
Scaling-up Transformation of Multisensor Images with Multiple Resolutions SCI/SSCI论文  OAI收割
2009
作者:  
Tian J.;  Xia J.
收藏  |  浏览/下载:54/0  |  提交时间:2012/06/08
Key techniques of laser direct writing of fine lines on the spherical surface (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Design and Fabrication, August 21, 2005 - August 26, 2005, Changchun, China
Liang F.; Hu J.
收藏  |  浏览/下载:76/0  |  提交时间:2013/03/25
The main principles of laser direct writing (LDW) system for lines on the spherical surface (SS) are discussed. It is pointed out that line profile is determined by the exposure dose distribution  which lies on the light intensity distribution of focus plane and the scanning speed. To improve the quality of line profile on the SS  several key techniques as follows are introduced. Firstly  the unique system configuration  four axes mutually intersecting at the center of the SS  is adopted  which ensures the shape of the focus be maintained circular during the writing period. Secondly  an automatic focus system (AFS) with the function of automatic focus in a certain range is introduced. Thirdly  to guarantee the linear velocity to accord with the exposure character of the photoresist all the time  an efficient arithmetic that controls motors run at appropriate angular velocity in different latitude is developed. Finally  to achieve a stable and well-behaved system so as to compensate the velocity instability resulting from unavoidable errors of mechanical and electronics factor  a powerful programmable multi-axis controller (PMAC) is utilized as the kernel element of the servocontrol system  and the curves of step response and parabolic response achieved by feedforward and PID loop tuning indicate that the location precision and velocity stability have reached a high level. The experimental results of LDW of lines on the SS work piece with a diameter 30 mm and a radius equal to 100 mm are given. The section analysis of the lines on the photoresist by the atomic force microscope (AFM) after exposure and development is performed. The results show that line width is about 3.0 m  and the steep sides of the lines are parallel to each other.  
Interactions between root and shoot competition among four plant species in an alpine meadow on the Tibetan Plateau SCI/SSCI论文  OAI收割
2006
Song M. H.; Tian Y. Q.; Xu X. L.; Hu Q. W.; Hua O. Y.
收藏  |  浏览/下载:37/0  |  提交时间:2012/06/08