中国科学院机构知识库网格系统: 检索

A framework for seismic response analysis of dams using numerical source-to-structure simulation 期刊论文 OAI收割
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 2022, 页码: 16
作者: Zhang, Meng-Zhong; Zhang, Lei; Wang, Xiang-Chao; Su, Wei; Qiu, Yi-Xiang

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收藏 | 浏览/下载：28/0 | 提交时间：2023/03/31

dam source to structure site-specific ground motions seismic response

Influence of photochemical loss of volatile organic compounds on understanding ozone formation mechanism 期刊论文 OAI收割
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2022, 卷号: 22, 期号: 7, 页码: 4841-4851
作者: Ma, Wei; Feng, Zemin; Zhan, Junlei; Liu, Yongchun; Liu, Pengfei

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收藏 | 浏览/下载：24/0 | 提交时间：2022/11/07

YANGTZE-RIVER DELTA TYPICAL URBAN AREA GROUND-LEVEL OZONE MISSING OH SOURCE RADICAL CHEMISTRY HO2 CONCENTRATIONS RECEPTOR-SITE SURFACE OZONE CHINA POLLUTION

Assessment of seismic ground motion amplification and liquefaction at a volcanic area characterized by residual soils 期刊论文 OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2020, 卷号: 17, 期号: 3, 页码: 740-752
作者: Matassoni, Luca; Fiaschi, Andrea

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收藏 | 浏览/下载：59/0 | 提交时间：2020/11/12

Site effects Residual soils Volcanic mountain area Seismic ground amplification Soil liquefaction Shear wave velocity

Effects of site conditions on earthquake ground motion and their applications in seismic design in loess region 期刊论文 OAI收割
Journal of Mountain Science, 2017, 卷号: 14, 期号: 6, 页码: 1185-1193
作者: WANG Lan-min; WU Zhi-jian; XIA Kun

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收藏 | 浏览/下载：18/0 | 提交时间：2017/06/21

Loessial Site Field Investigation Ground Motion Observation Micro Tremor Observation Loess Topography Loess Thickness Site Effects Seismic Design

Liquefaction in western Sichuan Basin during the 2008 Mw 7.9 Wenchuan earthquake, China 期刊论文 OAI收割
TECTONOPHYSICS, 2017, 卷号: 694, 期号: 0, 页码: 214-238
作者: Jing, LZ (Jing Liu-Zeng); Wang, P (Wang, Peng); Zhang, ZH (Zhang, Zhihui); Li, ZG (Li, Zhigang); Cao, ZZ (Cao, Zhenzhong)

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收藏 | 浏览/下载：38/0 | 提交时间：2018/07/24

SAN-ANDREAS FAULT 1994 NORTHRIDGE EARTHQUAKE LOS-ANGELES BASIN GROUND-MOTION SEISMIC-WAVES CANTERBURY EARTHQUAKE NOCERA-UMBRA RECURRENT LIQUEFACTION SITE AMPLIFICATION SOIL LIQUEFACTION

Building African Ecosystem Research Network for sustaining local ecosystem goods and services SCI/SSCI论文 OAI收割
2015
作者: Yevide A. S. I.; Wu, B. F.; Yu, X. B.; Li, X. S.; Liu, Y.

收藏 | 浏览/下载：34/0 | 提交时间：2015/12/09

ecosystem monitoring Long-Term Ecological Research (LTER) biodiversity ground site gap analysis network Africa term ecological research coastal marine habitats long-term southern africa food security land-use biodiversity climate health indicators

Building African Ecosystem Research Network for sustaining local ecosystem goods and services 期刊论文 OAI收割
CHINESE GEOGRAPHICAL SCIENCE, 2015, 卷号: 25, 期号: 4
作者: Yevide, Armand Sedami Igor

收藏 | 浏览/下载：18/0 | 提交时间：2016/04/20

ecosystem monitoring Long-Term Ecological Research (LTER) biodiversity ground site gap analysis network Africa

On the ground-state splitting, fine structure of multiplets and EPR spectrum of Ni2+ doped in MgF2 crystal with orthorhombic site symmetry 期刊论文 OAI收割
Physica B-Condensed Matter, 2014, 卷号: 438, 页码: 127-130
W. Fang; X. Xiang; H. J. Chen; W. C. Zheng; H. Y. Tang

收藏 | 浏览/下载：22/0 | 提交时间：2014/04/18

Ground-state splitting Fine structure of multiplets D-2h site symmetry Defect structure paramagnetic-resonance parameters spin-hamiltonian parameters superposition-model field analysis ions covalency znf2 impurities absorption complexes

The ELT situation in China 会议论文 OAI收割
Retirement Symposium for Arne Ardeberg on Extremely Large Telescopes - Which Wavelengths, Lund, SWEDEN, 2007-11-29
作者: Liu Z(刘忠); Cui, XQ; Liu Z(刘忠)

收藏 | 浏览/下载：11/0 | 提交时间：2016/04/06

Extremely Large Telescope ground based segment ring aperture Interferometric Telescope active optics adaptive optics spherical mirror site survey Dome A

Research on the support structure of the primary mirror of large-aperture telescope (EI CONFERENCE) 会议论文 OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China
Yang W.; Jingxu Z.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

Large-aperture telescope can be used in surveying battlefield researching landform searching object real-time monitoring imaging detecting and identifying spatial targets and so on. A large-aperture telescope for achieving high resolution power is designed to monitor spatial target and image in real time. Real-time monitoring plays an important role in military conflicts. The orbit parameter of object quantity geometrical shape parameter and so on can be obtained by detect spatial target. With the development of optical technology people require larger aperture in optics-electronic (OE) system. By increasing optical aperture the ability of collecting light and resolution power in the system can be enhanced. But the support structure of the primary mirror of large-aperture telescope will be a very difficult problem. With the increase of primary mirror aperture the weight of the primary mirror will become larger than before. The root mean square (rms) of the primary mirror is affected by many factors such as deadweight deformation of heat environment and so on. Due to the primary mirror of telescope is an important component of telescope system. By reducing the weight of primary mirror precision of the system is ensured. During the designing phase one can consider the supporting project of the primary mirror synthetically and analyze it roundly according to technical requirement of optical system and the effect factors. The final structural design can be reasonable. In an astronomical telescope the surface of reflector is an important part for collecting dark radiation of celestial bodies. Its surface shape will have an effect on collecting efficiency of telescope radiant energy directly. So the rms must be very high. Optical system of large aperture small wavelength and small focus can receive maximal light intensity. For ground-based optical astronomical telescope the design proposed in the paper can satisfy the requirement of the possible minimum atmosphere seeing at astronomical observatory site and exert the use efficiency of the telescope adequately. So the accuracy of the traditional surface of reflector can assure that 90% of all the light energy can be focused on within the angle diameter range of the minimum atmosphere seeing then 100% of light energy should be focused on the angle diameter range of minimum atmosphere seeing. Because the rms of mirror is very high precise surface machining and accurate the support of mirror are very important tasks during designing and manufacturing the telescope. In the paper various support techniques of a large-aperture telescope primary mirror are discussed and a 3.5 meter telescope system at the Starfire Optical Range (SOR) overviewed simply which was operated by the Directed Energy Directorate of the Air Force Research Laboratory Kirtland AFB NM USA from the ground-based O-E system for the observations of spatial target. We also analyze Theoretical elastic deformation of the Steward Observatory 2.3 meter mirror is analyzed.