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Understanding invasion success of Pseudorasbora parva in the Qinghai-Tibetan Plateau: Insights from life-history and environmental filters 期刊论文  OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 卷号: 694, 页码: 12
作者:  
Jia, Yintao;  Kennard, Mark J.;  Liu, Yuhan;  Sui, Xiaoyun;  Chen, Yiyu
  |  收藏  |  浏览/下载:63/0  |  提交时间:2020/04/07
From plant functional types to plant functional traits: A new paradigm in modelling global vegetation dynamics 期刊论文  OAI收割
PROGRESS IN PHYSICAL GEOGRAPHY, 2015, 卷号: 39, 期号: 4, 页码: 514-535
作者:  
Yang, Yanzheng;  Zhu, Qiuan;  Peng, Changhui;  Wang, Han;  Chen, Huai
  |  收藏  |  浏览/下载:20/0  |  提交时间:2020/03/25
Integration of MODIS aerosol products for estimating impact of the Russian wildfires over Europe and Asia during August 2010 会议论文  OAI收割
34th International Symposium on Remote Sensing of Environment - The GEOSS Era: Towards Operational Environmental Monitoring, Sydney, NSW, Australia, April 10, 2011 - April 15,2011
Mei, Linlu; Xue, Yong; Guang, Jie; Li, Yingjie; Wang, Ying; Xu, Hui; Wu, Chaolin; Hou, Tingting; He, Xingwei; Dong, Jing; Chen, Ziqiang
收藏  |  浏览/下载:30/0  |  提交时间:2014/12/07
Packaging technology of polymer/Si arrayed waveguide grating and their environmental stability (EI CONFERENCE) 会议论文  OAI收割
2005 6th International Conference on Electronics Packaging Technology, August 30, 2005 - September 2, 2005, Dameisha, Shenzhen, China
作者:  
Zhang Y.;  Zhang X.;  Zhang X.;  Zhang X.;  Wang F.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
Future optical communication systems will use more of the exceptional high bandwidth of optical fiber. Wavelength division multiplexing (WDM) systems are well suited to transport terabits of information via the fiber[1]. Multiplexers/ demultiplexers (MUX/DEMUX) are essential components for dense WDM systems. Several different kinds of multiplexer types have been developed in the past: (a) interference filters  (b) fiber gratings  and (c) planar lightwave circuit (PLC) MUX/DEMUXers[2  3]. The planar fabrication process of the last mentioned PLCs allows the realization of high performance filters with a large number of wavelength channels. Further  an integration with other optical elements seems to be possible. Arrayed waveguide gratings (AWG) are a special kind of PLC-MUX/DEMUXers  which are very attractive components for WDM systems because of their great flexibility in filter design[4  5]. Basically  an AWG is an optical spectrograph built in planar waveguide technique. Typically  AWGs works in a high grating order (50-250). For AWG multiplexer applications in communications systems a precise wavelength controllability and wavelength stability with long term is demanded. Recently  a polymeric (especially fluorinated polymer with low optical absorption loss in the infrared region) AWG has attracted much attention because of its easy fabrication  low cost possibility and a potential of integration with other polymer devices[6]. Standard AWGs  however  show a change of center wavelength with temperature. A method to prevent this temperature drift is to package the AWG together with a temperature controller in order to tune and fix the desired filter-wavelength. In this paper  a 32-channel AWG was fabricated using a cross-linkable fluorinated poly (ether ether ketone) (FPEEK)  its package technology and environmental stability were also discussed. 2005 IEEE.