中国科学院机构知识库网格系统: 检索

Variation Characteristics and Transportation of Aerosol, NO2, SO2, and HCHO in Coastal Cities of Eastern China: Dalian, Qingdao, and Shanghai 期刊论文 OAI收割
REMOTE SENSING, 2021, 卷号: 13
作者: Li, Xiaomei; Xie, Pinhua; Li, Ang; Xu, Jin; Hu, Zhaokun

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收藏 | 浏览/下载：62/0 | 提交时间：2021/04/26

AOD PM2.5 NO2 SO2 HCHO coastal city flux MAX-DOAS CA MS

Study of the Urban NO2 Distribution and Emission Assessment Based on Mobile MAX-DOAS Observations 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 卷号: 41
作者: Liu Hao-ran; Hu Qi-hou; Tan Wei; Su Wen-jing; Chen Yu-jia

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收藏 | 浏览/下载：29/0 | 提交时间：2021/04/26

Mobile MAX-DOAS NO2 Distribution Emission flux

An automated dynamic chamber system for exchange flux measurement of reactive nitrogen oxides (HONO and NOx) in farmland ecosystems of the Huaihe River Basin, China 期刊论文 OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2020, 卷号: 745
作者: Tang, Ke; Qin, Min; Fang, Wu; Duan, Jun; Meng, Fanhao

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收藏 | 浏览/下载：50/0 | 提交时间：2020/11/30

Automated dynamic chamber Agricultural soil HONO flux NO(x )flux

Variability and controls of soil CO(2)fluxes under different tillage and crop residue managements in a wheat-maize double-cropping system 期刊论文 OAI收割
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2020, 页码: 15
作者: Qiu, Qingyan; Wu, Lanfang; Hu, Yalin; Lai, Derrick Yuk Fo; Wang, Weiqi

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收藏 | 浏览/下载：32/0 | 提交时间：2021/03/18

Soil CO(2)flux Soil depth Conventional tillage No tillage Crop residue application

Variability and controls of soil CO(2)fluxes under different tillage and crop residue managements in a wheat-maize double-cropping system 期刊论文 OAI收割
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2020, 页码: 15
作者: Qiu, Qingyan; Wu, Lanfang; Hu, Yalin; Lai, Derrick Yuk Fo; Wang, Weiqi

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收藏 | 浏览/下载：34/0 | 提交时间：2021/03/18

Soil CO(2)flux Soil depth Conventional tillage No tillage Crop residue application

Quantification of N2O and NO emissions from a small-scale pond-ditch circulation system for rural polluted water treatment 期刊论文 OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2018, 卷号: 619, 期号: 1, 页码: 946-956
作者: Ma, Lin

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收藏 | 浏览/下载：30/0 | 提交时间：2019/07/03

Pond-ditch circulation system (PDCS) Nitrous oxide (N2O) Nitric oxide (NO) Emission flux Partial least squares (PLS)

Short-term effect of nitrogen addition on nitric oxide emissions from an alpine meadow in the Tibetan Plateau 期刊论文 OAI收割
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2016, 卷号: 23, 期号: 12, 页码: 12474-12479
作者: Gao, Yongheng; Ma, Xingxing; Cooper, David J.

收藏 | 浏览/下载：26/0 | 提交时间：2016/05/11

Nitrogen deposition NO flux Water-filled pore space Denitrification Alpine meadow

Contrasting effects of ammonium and nitrate inputs on soil CO2 emission in a subtropical coniferous plantation of southern China SCI/SSCI论文 OAI收割
2015
作者: Wang Y. S.; Cheng, S. L.; Fang, H. J.; Yu, G. R.; Xu, X. F.

收藏 | 浏览/下载：120/0 | 提交时间：2015/12/09

Ammonium Nitrate Nitrogen deposition Soil CO2 flux Soil microbial community Subtropical coniferous plantation microbial community structure atmospheric no3-deposition northern hardwood forests nitrogen deposition tropical forest temperate forest ecosystem model organic-matter boreal forests lipid analysis

Control of N/N2 species ratio in NO plasma for p-type doping of ZnO (EI CONFERENCE) 会议论文 OAI收割
作者: Chen X.; Liu L.; Liu L.; Li B.; Li B.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

Nitrogen-doped ZnO thin films were grown on c-plane sapphire (Al 2O3) substrates via plasma-assisted molecular beam epitaxy using plasma activated nitric oxide (NO) as the oxygen source and dopant. X-ray diffraction measurements indicate that a small NO flux benefits the crystal quality of the thin films. Hall effect measurements indicate that the electron density of the ZnO films decreases gradually with decreasing NO flux and the conduction reverses to p-type at a certain flux. Optical emission spectra indicate that the N atom content in the NO plasma increases with decreasing NO flux and the origin of this is discussed. X-ray photoelectron spectroscopy measurements demonstrate that the number of N atom occupied O sites in the ZnO lattice increases correspondingly. 2011 American Institute of Physics.

Design and image restoration research of a cubic-phase-plate system (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, April 26, 2010 - April 29, 2010, Dalian, China
作者: Zhang J.; Zhang J.; Zhang J.; Shi G.; Zhang X.

收藏 | 浏览/下载：35/0 | 提交时间：2013/03/25

Wave-front coding technology is a novel jointly optical and digital imaging technology which can greatly extend the depth of focus of optical systems. The image restoration process is an important part of wave-front coding technology. Using wave-front coding makes the modulation transfer function(MTF) values of the optical systems change little over a range of several times the depth of focus which means the system MTF is quite insensitive to defocus and there is no zero in the passband. So we can design a single filter for the restoration of images in different defocus positions. However it's hard to avoid noise during image acquisition and transmission processes. These noises will be amplified in the image restoration especially in the high frequency part when the MTF drop is relatively low. The restoration process significantly reduces the system signal to noise ratio this way. Aimed at the problem of noise amplification a new algorithm was proposed which incorporated wavelet denoising into the iterative steps of Lucy-Richardson algorithm. Better restoration results were obtained through the new algorithm effectively solving the noise amplification problem of original LR algorithm. Two sets of identical triplet imaging systems were designed in one of which the cubic-phase-plate was added. Imaging experiments of the manufactured systems were carried and the images of a traditional system and a wave-front coded system before and after decoding were compared. The results show that the designed wave-front coded system can extend the depth of focus by 40 times compared with the traditional system while maintaining the light flux and the image plane resolution. 2010 Copyright SPIE - The International Society for Optical Engineering.