中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共7条,第1-7条 帮助

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海岸带景观格局变化对生态系统服务的影响及脆弱性评价 学位论文  OAI收割
北京: 中国科学院生态环境研究中心, 2019
作者:  
程敏
  |  收藏  |  浏览/下载:86/0  |  提交时间:2020/07/01
Spatiotemporal patterns of particulate matter (PM) and associations between PM and mortality in Shenzhen, China SCI/SSCI论文  OAI收割
2016
作者:  
Zhang F. Y.;  Liu, X. J.;  Zhou, L.;  Yu, Y.;  Wang, L.
收藏  |  浏览/下载:44/0  |  提交时间:2016/12/16
Rapid Micro-Patterning of a Conductive PANI/MWNTs-Polymer Composite Using an Optically-induced Electrokinetics Chip 会议论文  OAI收割
IEEE Nanotechnology Materials and Devices Conference (IEEE NMDC), Honolulu, HI, OCT 16-19, 2012
作者:  
Liu N(刘娜);  Liang WF(梁文峰);  Mai, John D.;  Dong ZL(董再励);  Li WJ(李文荣)
收藏  |  浏览/下载:37/0  |  提交时间:2013/12/26
A flexible, dynamically programmable and low-cost method applicable to micro-patterning of a conductive polymer/carbon nanotube composite solution is significant due to the potential applications in many areas. This paper demonstrates a new micro-patterning method for fabricating electrodes from a conductive polyaniline (PANI)/MWNT composite using an optically-induced electrokinetics (OEK) chip. This method quickly patterns flexible polymeric electrodes with different geometries when a square waveform signal with amplitudes from 16-20 Volts and frequencies from 20-30 kHz are applied. The geometric dimensions of the electrodes can be varied dynamically by controlling the size and exposure time of the light pattern. The surface morphology of electrodes patterned by this method is scanned by an atomic force microscope (AFM) and a scanning electron microscope (SEM) which show that the electrodes are uniform and continuous. Furthermore, the geometric dimensions and resistances of the electrodes are measured and analyzed. Experimental results reveal that the relationship between the resistance and geometries of the electrodes obey Ohm's law and the resistivity of the electrodes is about 0.03 Omega.m.  
Atmospheric Short-Chain Chlorinated Paraffins in China, Japan, and South Korea 期刊论文  OAI收割
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2012, 卷号: 46, 期号: 21, 页码: 11948-11954
作者:  
Li, Qilu;  Li, Jun;  Wang, Yan;  Xu, Yue;  Pan, Xiaohui
收藏  |  浏览/下载:31/0  |  提交时间:2013/03/08
Spatial variations of tidal water level and their impact on the exposure patterns of tidal land on the central Jiangsu coast 期刊论文  OAI收割
ACTA OCEANOLOGICA SINICA, 2010, 卷号: 29, 期号: 1, 页码: 79-87
作者:  
Wang Zhenyan;  Gao Shu;  Huang Haijun
收藏  |  浏览/下载:24/0  |  提交时间:2015/07/20
Spatial variations of tidal water level and their impact on the exposure patterns of tidal land on the central jiangsu coast 期刊论文  iSwitch采集
Acta oceanologica sinica, 2010, 卷号: 29, 期号: 1, 页码: 79-87
作者:  
Wang Zhenyan;  Gao Shu;  Huang Haijun
收藏  |  浏览/下载:24/0  |  提交时间:2019/05/10
The application of auto-controlled liquid crystal light valve arrays to photolithography shutter (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Chen Y.
收藏  |  浏览/下载:15/0  |  提交时间:2013/03/25
Photolithography shutter is usually used to control exposure in order to obtain patterns of code disc and metrology grating which are the core components of optical shaft encoder. But perforated film as photolithography shutter has many disadvantages such as taking too long time to perforate  easily making wrong code  lower reusable ratio. Mathematical models for resist property  luminous efficiency and exposure have been established by deducing their relations for avoiding the disadvantages  which provides the theory of using liquid crystal light valve (LCLV) replacing proforated film. Based on operating principles of LCLV and control theories of photolithography shutter  the principle diagram of control circuit of LCLV arrays has been designed according to theirs control principles. In the control system  LCLV arrays as photolithography shutter are realized by adopting DS75451 to drive them and using AT89C51 chip to control them. By photolithographic experiment  the patterns of code disc are good  the edges of lines are vertical  it indicates LCLV arrays as photolithography shutter may control exposure and light passing accords with the intending requires. It proves using LCLV arrays replacing perforated film as photolithography shutter is feasible completely.