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	Measurement strategies to account for the temporal variation in soil-respired CO2 and its delta C-13 value in an irrigated oasis agroecosystem 期刊论文 OAI收割 GEODERMA REGIONAL, 2023, 卷号: 34, 页码: e00681 作者: Wei, Jie; Ren, Yanqin; Wang, Jingyuan; Chen, Changhua; Wang, Zhaosheng \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2023/09/07 Anthrosols respired CO2 delta C-13 Temporal variation Optimum measurement time Measurement strategies Irrigated agroecosystem
	Measurement strategies to account for the temporal variation in soil-respired CO2 and its δ13C value in an irrigated oasis agroecosystem 期刊论文 OAI收割 GEODERMA REGIONAL, 2023, 卷号: 34, 页码: e00681 作者: Wei, Jie; Ren, Yanqin; Wang, Jingyuan; Chen, Changhua; Wang, Zhaosheng \| 收藏 \| 浏览/下载：20/0 \| 提交时间：2023/11/06 Anthrosols respired CO2 delta C-13 Temporal variation Optimum measurement time Measurement strategies Irrigated agroecosystem
	Gas-water flow interface characterisation using electrical resistance tomography 会议论文 OAI收割 2nd World Congress on Industrial Process Tomography, Hannover, Germany, August 29, 2001 - August 31, 2001 作者: Wang M; Zhen Z; Ma Y; Li D; Lao L 收藏 \| 浏览/下载：23/0 \| 提交时间：2017/05/27 Electrical contacts Electrical resistance tomography Electrical tomography Flow regime identification Flow regimes Liquid level detection Measurement strategies Signal saturation
	Design and fabrication of CGH for aspheric surface testing and its experimental comparison with null lens (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: Zhao J.; Zhang X.; Zhang X.; Zhang X.; Li F. 收藏 \| 浏览/下载：33/0 \| 提交时间：2013/03/25 Computer-generated hologram (CGH) is an effective way to compensate wavefront in null test of aspheric surfaces and freeform surfaces. Our strategies of CGH design and fabrication for optical testing are presented and an experiment demonstrating the compensation results of CGH and null lens is also reported. In order to design complex CGH software was developed with which we can design a CGH including three sections: main section for compensating wavefront in null test alignment section for adjusting the relative position between CGH and interferometer and fiducial section for projecting fiducial marks around the optics under test. The design result is represented in GDS II format file which could drive a laser-direct-writer- machine to fabricate a photomask. Then a 1:1 replication process is applied to duplicate the patterns from photomask to a parallel optical substrate whose surface is error better than /60 rms. Finally an off-axis aspheric surface was tested with CGH and null lens respectively. The test result with CGH (0.019rms) is almost the same as the result with null lens (0.020 rms). This experiment also demonstrated that fiducial marks projected by CGH can be used to guide the alignment of the optics and measurement of its off-axis distance. 2010 Copyright SPIE - The International Society for Optical Engineering.
	Recent progress and future directions of ChinaFLUX SCI/SSCI论文 OAI收割 2006 Yu G. R.; Fu Y. L.; Sun X. M.; Wen X. F.; Zhang L. M. 收藏 \| 浏览/下载：20/0 \| 提交时间：2012/06/08 eddy covariance flux measurement carbon budget terrestrial ecosystem FLUXNET ChinaFLUX carbon-dioxide exchange water-vapor exchange frequency-response corrections native tallgrass prairie net ecosystem exchange gap filling strategies pine mixed forest long-term eddy covariance terrestrial ecosystem