中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共7条,第1-7条 帮助

条数/页: 排序方式:
Power generation analysis of super-long gravity heat pipe geothermal systems 期刊论文  OAI收割
APPLIED THERMAL ENGINEERING, 2024, 卷号: 242, 页码: 12
作者:  
Ma, Qingshan;  Chen, Juanwen;  Huang, Wenbo;  Li, Zhibin;  Li, Ang
  |  收藏  |  浏览/下载:7/0  |  提交时间:2025/11/17
Thermo-economic investigation of binary flashing cycle for enhanced geothermal system 期刊论文  OAI收割
GEOTHERMICS, 2021, 卷号: 89, 页码: 9
作者:  
Wang, Lingbao;  Li, Huashan;  Bu, Xianbiao
  |  收藏  |  浏览/下载:44/0  |  提交时间:2021/10/25
Performance of Hybrid Single Well Enhanced Geothermal System and Solar Energy for Buildings Heating 期刊论文  OAI收割
ENERGIES, 2020, 卷号: 13, 期号: 10, 页码: 10
作者:  
He, Yujiang;  Bu, Xianbiao
  |  收藏  |  浏览/下载:56/0  |  提交时间:2020/10/30
河北博野某地热井结垢位置预测及影响因素分析 期刊论文  OAI收割
石油钻探技术, 2020, 卷号: 48, 期号: 5, 页码: 105
作者:  
卜宪标;  李华山;  王令宝;  梁海军;  郭啸峰
  |  收藏  |  浏览/下载:56/0  |  提交时间:2021/11/01
Structural amelioration of 920 nm optically pumped semiconductor vertical external-cavity surface emitting laser (OPS-VECSEL) (EI CONFERENCE) 会议论文  OAI收割
2nd International Conference on Energy, Environment and Sustainable Development, EESD 2012, October 12, 2012 - October 14, 2012, Jilin, China
作者:  
Liu Y.;  Liu Y.;  Wang L.;  Wang L.;  Wang L.
收藏  |  浏览/下载:49/0  |  提交时间:2013/03/25
920 nm optically pumped semiconductor vertical external-cavity surface emitting laser (OPS-VECSEL) has an important application in laser display. We constructed and optimized a 920 nm OPS-VECSEL with active region of In0.09Ga0.91As quantum well (QW) system pumped by 808 nm laser diode module. By the finite element method  self-consistent solutions of the semiconductor electronic and optical equations are realized to calculate the characteristics parameters of OPS-VECSEL. The performances of device especially the mode  the threshold and the optical-optical translation efficiency were analyzed by dealing with different number of QWs (1  2 and 3) in one period  QW depth  barrier width  the component and dimension of the non-absorption layer. We chose an improved structure of them. On this basis  we ameliorated the number of QW periods and the simulation showed that in order to obtain high performance device  the choice of the number of QW periods must be cautious. (2013) Trans Tech Publications  Switzerland.  
Characteristics of electrical field and ion motion in surface-electrode ion traps 期刊论文  OAI收割
JOURNAL OF MASS SPECTROMETRY, 2012, 卷号: 47, 期号: 3, 页码: 286-293
作者:  
Zhou, Xiaoyu;  Xu, Gaoping;  Xiong, Caiqiao;  Chen, Rui;  Qiao, Haoxue
  |  收藏  |  浏览/下载:33/0  |  提交时间:2019/04/09
Measuring the system gain of the TDI CCD remote sensing camera (EI CONFERENCE) 会议论文  OAI收割
Advanced Materials and Devices for Sensing and Imaging II, November 8, 2004 - November 10, 2004, Beijing, China
Ya-xia L.; Hai-ming B.; Jie L.; Jin R.; Zhi-hang H.
收藏  |  浏览/下载:85/0  |  提交时间:2013/03/25
The gain of a TDI CCD camera is the conversion between the number of electrons recorded by the TDI CCD and the number of digital units (counts) contained in the CCD image"[1]. TDI CCD camera has been a main technical approach for meeting the requirements of high-resolution and lightweight of remote sensing equipment. It is useful to know this conversion for evaluating the performance of the TDI CCD camera. In general  a lower gain is better. However  the resulting slope is the gain of the TDI CCD. We did the experiments using the Integration Sphere in order to get a flat field effects. We calculated the gain of the four IT-EI-2048 TDI CCD. The results and figures of the four TDI CCD are given.  this is only true as long as the total well depth (number of electrons that a pixel can hold) of the pixels can be represented. High gains result in higher digitization noise. System gains are designed to be a compromise between the extremes of high digitization noise and loss of well depth. In this paper  the mathematical theory is given behind the gain calculation on a TDI CCD camera and shows how the mathematics suggests ways to measure the gain accurately according to the Axiom Tech. The gains were computed using the mean-variance method  also known as the method of photon transfer curves. This method uses the effect of quantization on the variance in the measured counts over a uniformly illuminated patch of the detector. This derivation uses the concepts of signal and noise. A linear fit is done of variance vs. mean