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8条,第1-8条 帮助

条数/页: 排序方式:
Combined genotype and phenotype analyses reveal patterns of genomic adaptation to local environments in the subtropical oak Quercus acutissima 期刊论文  OAI收割
JOURNAL OF SYSTEMATICS AND EVOLUTION, 2021, 卷号: 59, 期号: 3, 页码: 541-556
作者:  
Gao, Jie;  Liu, Zhi-Long;  Zhao, Wei;  Tomlinson, Kyle W.;  Xia, Shang-Wen
  |  收藏  |  浏览/下载:37/0  |  提交时间:2021/10/27
Spatial genetic structuring in a widespread wetland plant on a plateau: Effects of elevation-driven geographic isolation and environmental heterogeneity 期刊论文  OAI收割
FRESHWATER BIOLOGY, 2020, 页码: 12
作者:  
Wu, Zhigang;  Li, Xing;  Xie, Dong;  Wang, Huijun;  Zhang, Zhiqi
  |  收藏  |  浏览/下载:49/0  |  提交时间:2020/07/10
Influence of environmental factors on the genetic variation of the aquatic macrophyte Ranunculus subrigidus on the Qinghai-Tibetan Plateau 期刊论文  OAI收割
BMC EVOLUTIONARY BIOLOGY, 2019, 卷号: 19, 期号: 1, 页码: 11
作者:  
Wu, Zhigang;  Xu, Xinwei;  Zhang, Juan;  Wiegleb, Gerhard;  Hou, Hongwei
  |  收藏  |  浏览/下载:17/0  |  提交时间:2020/04/28
Geographical or ecological divergence between the parapatric species ephedra sinica and e-intermedia? 期刊论文  iSwitch采集
Plant systematics and evolution, 2016, 卷号: 302, 期号: 8, 页码: 1157-1170
作者:  
Yin, Hengxia;  Yan, Xia;  Zhang, Wen;  Shi, Yong;  Qian, Chaoju
收藏  |  浏览/下载:50/0  |  提交时间:2019/05/09
Geographical or ecological divergence between the parapatric species Ephedra sinica and E-intermedia? 期刊论文  OAI收割
PLANT SYSTEMATICS AND EVOLUTION, 2016, 卷号: 302, 期号: 8
作者:  
Yin, Hengxia;  Yan, Xia;  Zhang, Wen;  Shi, Yong;  Qian, Chaoju
  |  收藏  |  浏览/下载:11/0  |  提交时间:2022/07/05
Geographical or ecological divergence between the parapatric species Ephedra sinica and E-intermedia? 期刊论文  OAI收割
PLANT SYSTEMATICS AND EVOLUTION, 2016, 卷号: 302, 期号: 8, 页码: 1157-1170
作者:  
Yin, Hengxia;  Yan, Xia;  Zhang, Wen;  Shi, Yong;  Qian, Chaoju
  |  收藏  |  浏览/下载:8/0  |  提交时间:2022/07/08
Research on the the device of non-angular vibration for opto-electronic platform (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials in Manufacturing and Testing, April 26, 2010 - April 29, 2010, Dalian, China
An Y.; Song C.-P.; Kuang R.-J.; Jin G.
收藏  |  浏览/下载:21/0  |  提交时间:2013/03/25
The opto-electronic platform is the main equipment for aviation reconnaissance. It is a surveillance system with the function of search  recognition orientation and tracking by opto- electronic instruments. It is made up of opto-electronic instruments which are used to get high quality image  and stabilization tracking system to control stabilization and gesture of platform for exact tracking. The opto-electronic platform purpose is to achieve high quality image. Besides the impact of optic system  the image quality of the system is influenced greatly in the vibration environment. The research worked by Zhao peng which demonstrated the affection caused by angular vibration was worse than which caused by line vibration  and what was multiplied direct ratio with plane altitude. So it is necessary to design a new device which could be used widely and has good angular vibration isolation effect. According to the theory of parallelogram  the non-angular vibration device had been designed with spatial links  and the theory of non-angular vibration was analyzed. The three-dimensional model was set with UG  the analysis was done by ADAMS/vibration software. The acceleration and displacement response of the device in each direction was calculated by inspiriting it with sine wave of the acceleration in three directions  and the stiffness and damp were studied. All the work prove the design principle of the device is reasonable  and the device is adopted to keep the platform motion moving horizontally  at the meantime the device is good at isolating vibration in all directions. 2010 SPIE.  
Inhibition of electromagnetic interference in control system based on DSP of high-power TEA CO2 laser (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者:  
Meng F.-J.;  Guo L.-H.;  Wang H.-Q.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
The strong electromagnetic interference (EMI) generated in high-power TEA C02 laser system mainly comes from main discharge circuit  pulse spark switch and power supply. Such strong EMI causes great damage and interference to the control system based on DSP. In this paper  we present the interference sources and their distribution and propose the methods of anti-interference. Measures for hardware design include weakening transient ground potential difference by using equipotential lines between devices  using signal isolation interface to inhibit the transient ground potential interference  and rational layout  shielding and filtering to the control system. And methods for software design include range-limited filter  self-diagnosis and self-repair for the critical data and anti-interference during abnormal reset. The EMI has been inhibited effectively by the anti-interference method proposed above. The result shows that: the software anti-interference method is as important as the hardware anti-interference method for the control system in a complex environment of strong EMI. 2010 IEEE.