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11条,第1-10条 帮助

条数/页: 排序方式:
Redundancy effect of initial enactment encoding and subsequent testing on memory enhancement: Insights from an electrophysiological study 期刊论文  OAI收割
BRAIN RESEARCH, 2024, 卷号: 1836, 页码: 9
作者:  
Cui, Xiaoyu;  Lu, Jing;  Liu, Yi;  Li, Juan;  Zheng, Zhiwei
  |  收藏  |  浏览/下载:12/0  |  提交时间:2024/06/15
Toward an understanding of dwell fatigue damage mechanism of bimodal Ti-6Al-4V alloys 期刊论文  OAI收割
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2022, 卷号: 108, 页码: 244-255
作者:  
Zeng, L. R.;  Lei, L. M.;  Luo, X. M.;  Zhang, G. P.
  |  收藏  |  浏览/下载:33/0  |  提交时间:2022/07/01
The high cycle fatigue, deformation and fracture of compacted graphite iron: Influence of temperature 期刊论文  OAI收割
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 卷号: 724, 页码: 606-615
作者:  
Zou, CL;  Pang, JC;  Zhang, MX;  Qiu, Y;  Li, SX
  |  收藏  |  浏览/下载:38/0  |  提交时间:2018/12/25
The high cycle fatigue, deformation and fracture of compacted graphite iron: Influence of temperature 期刊论文  OAI收割
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 卷号: 724, 页码: 606-615
作者:  
Zou, C. L.;  Pang, J. C.;  Zhang, M. X.;  Qiu, Y.;  Li, S. X.
  |  收藏  |  浏览/下载:10/0  |  提交时间:2021/02/02
A robust and powerful two-step testing procedure for local ancestry adjusted allelic association analysis in admixed populations 期刊论文  OAI收割
GENETIC EPIDEMIOLOGY, 2018, 卷号: 42, 期号: 3, 页码: 288-302
作者:  
Duan, Qing;  Xu, Zheng;  Raffield, Laura M.;  Chang, Suhua;  Wu, Di
  |  收藏  |  浏览/下载:66/0  |  提交时间:2018/05/28
Evaluation and reduction of the end friction effect in true triaxial tests on hard rocks 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2017, 卷号: 97, 页码: 144-148
作者:  
Peng, Shuai;  Feng, Xia-Ting;  Zhang, Xiwei;  Yang, Chengxiang;  Kong, Rui
  |  收藏  |  浏览/下载:25/0  |  提交时间:2018/06/05
Application of acoustic emission, anisotropy of acoustic velocity and palaeomagnetie technology to determine in-situ stress in tight sands 会议论文  OAI收割
Jeju, Korea, Republic of, May 10, 2017 - May 13, 2017
作者:  
Shi X;  Yang L(杨柳);  Han QR
  |  收藏  |  浏览/下载:29/0  |  提交时间:2018/11/08
Temperature gradients effect on surface test with high precise interferometer (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:  
Gu Y.-Q.
收藏  |  浏览/下载:31/0  |  提交时间:2013/03/25
In high precise surface testing  temperature stability and uniformity are of paramount importance to the high accuracy of test results. Micro-temperature variation and temperature gradients not only cause the change of the air refractive index and lead to the optical path variation in interferometer cavity  but also result in deformation of the tested surface itself  which always brings about errors to the test results. Temperature effects on the interferometer cavity and the tested surface are analyzed from the axial and radial directions in this letter. Temperature model of the interferometer cavity and the tested lens are established and quantitative calculations and diagram of test results versus temperature and lens dimension are provided. It shows that temperature gradients effect increase with the length of the interferometer and the dimension of the tested lens. The interferometer cavity is mainly affected by radial temperature gradients while the tested lens is mainly affected by the axial temperature gradients. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Influence of spatial temperature distribution on high accuracy interferometric metrology (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:  
Yang H.;  Zhang J.;  Zhang J.;  Zhang J.;  Yan F.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
We calculate the influence of temperature change on the refractive index of air  establish a model of air temperature distribution and analyze the effect of different temperature distribution on the high accuracy interferometric metrology. First  a revised Edlen formula is employed to acquire the relation between temperature and refractive index of air  followed by introducing the fixed temperature gradient distribution among the spatial grid within the optical cavity between the reference flat and the test flat of the Fizeau interferometer  accompanied by a temperature change random function within each grid. Finally  all the rays through the air layer with different incident angles are traced by Matlab program in order to obtain the final output position  angle and OPD for each ray. The influence of different temperature distribution and the length of the optical cavity in on the testing accuracy can be analyzed through the RMS value that results from repeatable rays tracing. As a result  the horizontal distribution (vertical to optical axis) has a large effect on the testing accuracy. Thus  to realize the high accuracy figure metrology  the horizontal distribution of temperature must be rigorously controlled as well as to shorten the length of the optical cavity to a large extent. The results from our simulation are of great significant for the accuracy analysis of interferometric testing and the research of manufacturing a interferometer. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Mid-frequency surface error test with a Foucault apparatus (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, July 8, 2007 - July 12, 2007, Chengdu, China
作者:  
Li J.;  Li J.;  Xuan B.;  Li J.
收藏  |  浏览/下载:17/0  |  提交时间:2013/03/25
Testing of mid-frequency surface error is of the first importance for fast optics  especially for large aperture aspherics. Foucault test plays a dominant role for surface error inspection before the digital interferometer age  but it seems to have faded out these days because no quantitative results turn out. However  an interferometer with high resolution CCDs is either unavailable or unaccessible in the process of manufacture. As its advantages are realized and recognized for the second time  Foucault test is going back to the stage again. A new theory of calculating the contrast of the shadow pattern of Foucault test is put forward in this paper and some modifications are discussed upon the analyses of the limitation of traditional Foucault apparatus. A paraboloidal mirror was fabricated and tested by the modified Foucault apparatus whose effect has been proved to be great. The methods of controlling mid-frequency error are described in the other paper at this conference- "Multi-mode combine manufacturing technology for large aperture aspheric mirrors"1.