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	Fine and Quantitative Evaluations of the Water Volumes in an Aquifer Above the Coal Seam Roof, Based on TEM 期刊论文 OAI收割 MINE WATER AND THE ENVIRONMENT, 2019, 卷号: 38, 期号: 1, 页码: 49-59 作者: Chen, Kang; Xue, GuoQiang; Chen, WeiYing; Zhou, NanNan; Li, Hai \| 收藏 \| 浏览/下载：49/0 \| 提交时间：2019/04/18 Transient electromagnetic method (TEM) Water volumes Quantitative estimate Pumping test
	Application of compact Non-Evaporable Getter and Sputter combination in UHV system of HIAF 期刊论文 OAI收割 VACUUM, 2018, 卷号: 157, 页码: 159-165 作者: Luo, C.; Li, P.; Xie, W. J.; Wan, Y. P.; Chai, Z. \| 收藏 \| 浏览/下载：34/0 \| 提交时间：2019/03/27 Large pumping speed combination pump NEG pumps High Intensity Heavy-Ion Accelerator Facility Booster ring Dynamic flow method
	Numerical modeling of the effects of pumping on tide-induced groundwater level fluctuation and on the accuracy of the aquifer's hydraulic parameters estimated via tidal method: a case study in Donghai Island, China 期刊论文 OAI收割 JOURNAL OF HYDROINFORMATICS, 2017, 卷号: 19, 期号: 4, 页码: 607-619 作者: Zhou, Pengpeng; Qiao, Xiaojuan; Li, Xiaolei \| 收藏 \| 浏览/下载：36/0 \| 提交时间：2017/11/16 coastal aquifer groundwater level hydraulic parameter numerical modeling pumping tidal method
	Multi straight line analytical method for estimating aquifer parameters from recovery test data 期刊论文 OAI收割 Yantu Lixue/Rock and Soil Mechanics, 2008, 卷号: 29, 期号: 12, 页码: 3246-3250 Guo; Zhou; Li; Jian-Qing1; Hong-Fei1; Yan1; 2 收藏 \| 浏览/下载：16/0 \| 提交时间：2011/08/19 Water analysis - Aquifers - Functions - Parameter estimation - Probability density function - Test facilities - Water levels - Water wells - Wells - Analytical methods - Aquifer parameters - Data analysis method - Hydrogeological parameters - Multi straight line analysis - Parameters of aquifer - Pumping rates - Series expressions - Simplification of well function - Storability - Straight lines - Transmissivity - Water level risings - Water storages
	Design of high-resolution fourier transform lens (EI CONFERENCE) 会议论文 OAI收割 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China 作者: Zhang L.; Zhang L. 收藏 \| 浏览/下载：25/0 \| 提交时间：2013/03/25 With the development of optical information processing high-resolution Fourier transform lens has often been used in holographic data storage system spatial filtering and observation of particles. This paper studies the optical design method of high-resolution Fourier transform optical lenses system which could be used in particles observation and holographic data storage system. According to Fourier transform relation between object and its frequency plane and the theory of geometrical optics the system with working wavelength 532nm and resolution 3 m was designed based on ZEMAX. A multi-configuration method was adopted to optimize the system's lenses. In the optical system a diaphragm was placed at the system's spectrum plane and the system demanded a low vacuum to cut down the influences of atmosphere and other particles. The result of finite element analysis indicated that the influences of vacuum pumping to optics spacing and mirror surface shape very minor and the imaging quality not being affected. This system has many advantages such as simple structure good image quality and a high resolution of 3 m. So it has a wide application prospect and can be used both in holographic data storage system and particles observation.
	高功率光纤激光器抽运耦合技术研究进展期刊论文 OAI收割激光与光电子学进展, 2007, 卷号: 44, 期号: 4, 页码: 35, 43 赵楚军; 陈光辉; 慕伟; 范滇元收藏 \| 浏览/下载：1245/345 \| 提交时间：2009/09/18 高功率光纤激光器抽运技术双包层光纤光子晶体光纤螺旋芯光纤 high power fiber laser pumping method double-clad fiber photonic crystal fiber helical-core fiber
	Theoretical analysis of 980nm high power Vertical External-cavity Surface-emitting Semiconductor Laser (VECSEL) (EI CONFERENCE) 会议论文 OAI收割 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China 作者: Wang L.-J.; Wang L.-J.; Ning Y.-Q.; Qin L. 收藏 \| 浏览/下载：23/0 \| 提交时间：2013/03/25 By using bottom-emitting structure we will develop laser diode (LD) pumped 980 nm VECSEL with active region of InGaAs/GaAsP/AlGaAs system. Because the thickness of barrier layer and absorption layer exceed that of quantum well single well approximation model (KP method) can be used to calculate the band structure of VECSEL. The Schrodinger equation of finite deep potential well can be adopted to calculate the energy level structures of electron heavy and light holes. According to the transition selection rule we theoretically obtained the emitting wavelength of VECSEL and calculated quasi-Femi energy of valence band and conduction band based on the analysis of energy level structure of electron and holes. By analyzing the gain of strained quantum wells we calculated the gain of VECSEL using transition matrix elements of electron heavy and light holes. We give out the threshold gain output power and other characteristic parameters. We will study the configuration of VECSEL and pumping scheme. We designed external cavity mirror active region and bottom-emitting structure. A LD-pumped vertical external cavity surface-emitting laser whose output power is greater than 1.0 W can be predicted.
	Research on LD-Pumped dual wavelength Nd:YAG Laser with high beam quality for machining (EI CONFERENCE) 会议论文 OAI收割 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China 作者: Zhang G.; Zhang G.; Zhang G.; Zhang J.; Zhang J. 收藏 \| 浏览/下载：34/0 \| 提交时间：2013/03/25 Considering laser medium thermal lens effect and thermal focal length changes with pumping power conventionally lasers are designed to operate in the middle of thermal stable zones where the fundamental mode size is insensitive to thermal perturbation while this method seems impossible when large fundamental mode size is required. Through self-select mode cavity lasers are designed to work at the border of stable zone instead where large fundamental mode size in gain media can be reached. With increase of pumping power and self-aperture mode-selective effect mode size would grow up automatically to a certain value suitable for monomode resonance. With double 180 W pump modules acoustic Q-switch and LBO external frequency-doubled over 28 W which M2 equals 4.5 quasi-CW output green laser and 52W 1.064 um IR output is obtained simultaneity. With the insertion or not of the harmonic separator by footswitch high beam quality green IR and green IR lasers are obtained conveniently.