机构

• 长春光学精密机械与物... [2]
• 自动化研究所 [1]
• 广州能源研究所 [1]

采集方式

• OAI收割 [4]

内容类型

• 会议论文 [2]
• 期刊论文 [2]

发表日期

• 2024 [1]
• 2019 [1]
• 2005 [2]

学科主题

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择作者升序作者降序发表日期升序发表日期降序题名升序题名降序提交时间升序提交时间降序 Test Procedures and Mechanical Properties of Three-Dimensional Printable Concrete Enclosing Different Mix Proportions: A Review and Bibliometric Analysis 期刊论文  OAI收割 BUILDINGS, 2024, 卷号: 14, 期号: 9, 页码: 32 作者:  Huseien, Ghasan Fahim;  Tan, Shea Qin;  Saleh, Ali Taha;  Lim, Nor Hasanah Abdul Shukor;  Ghoshal, Sib K.   |  收藏  |  浏览/下载：1/0  |  提交时间：2025/11/20 3DPC  digital concrete  buildability  extrudability  robustness  mechanical properties  test procedures  bibliometric analysis  environmental sustainability   Mammography-based radiomic analysis for predicting benign BI-RADS category 4 calcifications 期刊论文  OAI收割 EUROPEAN JOURNAL OF RADIOLOGY, 2019, 卷号: 121, 页码: 8 作者:  Lei, Chuqian;  Wei, Wei;  Liu, Zhenyu;  Xiong, Qianqian;  Yang, Ciqiu   |  收藏  |  浏览/下载：74/0  |  提交时间：2020/03/30 Radiomics  Breast  Calcification  Predictive value of test  Unnecessary procedures   Manufacturing and Testing SiC Aspherical mirrors in Space telescopes (EI CONFERENCE) 会议论文  OAI收割 ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Fan D.;  Zhang X.;  Zhang X.;  Zhang X. 收藏  |  浏览/下载：42/0  |  提交时间：2013/03/25 Reaction Bonded (RB) SiC mirrors due to their excellent specific stiffness and thermal properties have been widely used in space telescopes. However  polishing large SiC aspherical mirrors is difficult compared to other materials such as fused silica or Zerodu. In addition  surface roughness of the polished SiC mirrors is limited by the defects of the materials and needs to be improved by means of surface coating technique. This paper introduces the current progress of large SiC aspherical mirrors manufacturing and testing in CIOMP. In particular  the procedures of making large off-axis aspherical mirrors were discussed in detail. A proprietary computer controlled optical surfacing (CCOS) technique was utilized to grind and polish the mirrors and the computer aided null test was used to measure the surface figure. As results  a 600mm class off-axis SiC aspherical mirrors was demonstrated with figure error less than 13nm rms.   Analysis of alignment error in asphere testing using a corrector (EI CONFERENCE) 会议论文  OAI收割 Optical Design and Testing II, November 8, 2004 - November 11, 2004, Beijing, United states 作者:  Xue D.-L.;  Zhang X.-J.;  Zheng L.-G. 收藏  |  浏览/下载：42/0  |  提交时间：2013/03/25 The characteristics and effects of alignment error on test results are analysed in this paper. The mathematical model are established  the least square method is used to determine the misalignment. Procedures are presented that allow for separation of misalignment from misfigure in asphere testing. The misalignment-induced aberrations by corrector and the support of the mirror can be calculated and subtracted from segment interferogram so that only true misfigure remains. The accuracy of the system can reach up to 0.028(=632.8nm).