中国科学院机构知识库网格系统: 检索

The pooled prevalence of the mental problems of Chinese medical staff during the COVID-19 outbreak: A meta-analysis 期刊论文 OAI收割
JOURNAL OF AFFECTIVE DISORDERS, 2022, 卷号: 303, 页码: 323-330
作者: Hu, Na; Deng, Hu; Yang, Hanxue; Wang, Chundi; Cui, Yonghua

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收藏 | 浏览/下载：68/0 | 提交时间：2022/04/08

COVID-19 medical staff mental problem meta-analysis

Exogenous Chemical Exposure Increased Transcription Levels of the Host Virus Receptor Involving Coronavirus Infection 期刊论文 OAI收割
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2022, 卷号: 56, 期号: 3, 页码: 1854-1863
作者: Jin, Xiaoting; Zhang, Jingxu; Li, Yanting; Zhang, Ze; Cui, Tenglong

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收藏 | 浏览/下载：14/0 | 提交时间：2022/11/08

AIR-POLLUTION EXPRESSION ACE2 ASSOCIATION SPIKE

Knowledge Augmented Dialogue Generation with Divergent Facts Selection 期刊论文 OAI收割
KNOWLEDGE-BASED SYSTEMS, 2020, 卷号: 210, 页码: 11
作者: Jiang, Bin; Yang, Jingxu; Yang, Chao; Zhou, Wanyue; Pang, Liang

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收藏 | 浏览/下载：43/0 | 提交时间：2021/12/01

Open-domain dialogue systems Knowledge selection Subject drift Attention mechanism

Ritchey–Common sparse-aperture testing of the Giant Steerable Science Mirror 期刊论文 OAI收割
Applied Optics, 2018, 卷号: 57, 期号: 27, 页码: 7764-7769
作者: An, Qichang; Zhang, Jingxu; Yang, Fei; Zhao, Hongchao; Cao, Haifeng

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收藏 | 浏览/下载：17/0 | 提交时间：2019/09/17

Optical testing Error analysis Mirrors Optical telescopes Phosphorus compounds Tin compounds

Alignment for sparse aperture telescope with serial robot arm 期刊论文 OAI收割
Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering, 2018, 卷号: 47, 期号: 8
作者: An, Qichang; Zhang, Jingxu; Yang, Fei; Zhao, Hongchao

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收藏 | 浏览/下载：14/0 | 提交时间：2019/09/17

Robotic arms Screws Telescopes

Metrology and calibration of GSSMP rotation accuracy 期刊论文 OAI收割
Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering, 2018, 卷号: 47, 期号: 9
作者: An, Qichang; Zhang, Jingxu; Yang, Fei; Zhao, Hongchao

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收藏 | 浏览/下载：11/0 | 提交时间：2019/09/17

Angle measurement Angular distribution Calibration Error analysis Laser theory Measurement errors Reflection Rotation Telescopes

Improved Expression of His(6)-Tagged Strictosidine Synthase cDNA for Chemo-Enzymatic Alkaloid Diversification 期刊论文 OAI收割
CHEMISTRY & BIODIVERSITY, 2010, 卷号: 7, 期号: 4, 页码: 860-870
作者: Yang, Liuqing; Zou, Hongbin; Zhu, Huajian; Ruppert, Martin; Gong, Jingxu

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收藏 | 浏览/下载：20/0 | 提交时间：2019/01/08

Preparation of C-23 esterified silybin derivatives and evaluation of their lipid peroxidation inhibitory and DNA protective properties 期刊论文 OAI收割
BIOORGANIC & MEDICINAL CHEMISTRY, 2009, 卷号: 17, 期号: 17, 页码: 6380-6389
作者: Wang, Feng; Huang, Kexin; Yang, Leixiang; Gong, Jingxu; Tao, Qiaofeng

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收藏 | 浏览/下载：25/0 | 提交时间：2019/01/08

Flavonolignan Silybin derivative Antioxidant Lipid peroxidation Free radical scavenger DNA damage protective Fe2+ ion chelation

Preparation of two sets of 5,6,7-trioxygenated dihydroflavonol derivatives as free radical scavengers and neuronal cell protectors to oxidative damage 期刊论文 OAI收割
BIOORGANIC & MEDICINAL CHEMISTRY, 2009, 卷号: 17, 期号: 9, 页码: 3414-3425
作者: Gong, Jingxu; Huang, Kexin; Wang, Feng; Yang, Leixiang; Feng, Yubing

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收藏 | 浏览/下载：28/0 | 提交时间：2019/01/08

5,6,7-Trioxygenated dihydroflavonols cis-Dihydroflavonoids Antioxidant Lipid peroxidation Free radical scavenger PC12 cells Xanthine oxidase inhibitor

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.