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浏览/检索结果: 共10条，第1-10条 帮助

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Does agroecosystem model improvement increase simulation accuracy for agricultural N2O emissions? 期刊论文  OAI收割
AGRICULTURAL AND FOREST METEOROLOGY, 2021, 卷号: 297, 页码: 12
作者:  Zhang, Yajie;  Yu, Qiang
  |  收藏  |  浏览/下载：37/0  |  提交时间：2021/03/15
Evaluation of ionospheric height assumption for single station GPS-TEC derivation 期刊论文  OAI收割
ADVANCES IN SPACE RESEARCH, 2017, 卷号: 60, 期号: 2, 页码: 286-294
作者:  Lu, Weijun;  Ma, Guanyi;  Wang, Xiaolan;  Wan, Qingtao;  Li, Jinghua
收藏  |  浏览/下载：67/0  |  提交时间：2017/09/01
A predictive model of Vibrio cholerae for combined temperature and organic nutrient in aquatic environments 期刊论文  OAI收割
JOURNAL OF APPLIED MICROBIOLOGY, 2013, 卷号: 114, 期号: 2, 页码: 574-585
作者:  Fu, S.;  Shen, J.;  Liu, Y.;  Chen, K.
收藏  |  浏览/下载：33/0  |  提交时间：2014/07/17
The Analysis of Atmospheric Water Vapor Based on Ground-based Microwave Radiometer 会议论文  OAI收割
International Conference on Advanced Materials in Microwaves and Optics (AMMO 2011), Bangkok, THAILAND, SEP 30-OCT 01, 2011
作者:  He Jieying;  Sun Fenglin;  Zhang Shengwei;  Zhang Yu
收藏  |  浏览/下载：32/0  |  提交时间：2014/12/15
Radius studies of li-8 and b-8 using the optical-limit glauber model in conjunction with relativistic mean-field theory 期刊论文  iSwitch采集
Chinese physics c, 2010, 卷号: 34, 期号: 10, 页码: 1622-1627
作者:  Fan Guang-Wei;  Xu Wang;  Fukuda, M.;  Pan Qiang-Yan;  Cai Xiao-Lu
收藏  |  浏览/下载：116/0  |  提交时间：2019/05/10
Radius studies of (8)Li and (8)B using the optical-limit Glauber model in conjunction with relativistic mean-field theory 期刊论文  OAI收割
CHINESE PHYSICS C, 2010, 卷号: 34, 期号: 10, 页码: 6
Fan, GW; Xu, W; Fukuda, M; Pan, QY; Cai, XL; Fan, GT; Li, YJ; Luo, W; Xu, BJ; Yan, Z; Yang, LF
收藏  |  浏览/下载：23/0  |  提交时间：2012/04/11
Charged-particle multiplicities in pp interactions at root s=900 GeV measured with the ATLAS detector at the LHC ATLAS Collaboration 期刊论文  OAI收割
PHYSICS LETTERS B, 2010, 卷号: 688, 期号: 1, 页码: 21-42
作者:  ATLAS Collaboration
收藏  |  浏览/下载：56/0  |  提交时间：2015/12/02
Remote chlorophyll-a retrieval in eutrophic inland waters by concentration classification Taihu Lake case study 会议论文  OAI收割
International Conference on Earth Observation Data Processing and Analysis, ICEODPA,, Wuhan, China, December 28, 2008 - December 30,2008
Du, Cong; Wang, Shixin; Zhou, Yi; Yan, Fuli
收藏  |  浏览/下载：33/0  |  提交时间：2014/12/07
In order to improve the precision of phytoplankton chlorophyll-a (chla) concentration retrieval  this study classified the data into two groups (the high and the low) by chla concentration with the threshold of 50gA&bullL-1. And then build the statistical models for each group. Particularly  a modifying factor OSS/TSS was used to unmixing the spectra in the low model to improve the low relationship between spectral reflectance and chla concentrations. As a result  the concentration classification model allowed estimation of chla with a root mean square error (RMSE) of 21.12gA&bullL-1 and the determination coefficient (R2) was 0.92  comparing with RMSE of chla estimation was 35.72gA&bullL-1 and R2=0.72 in the traditional model. It shows that concentration classification is a helpful method for accurate remote chla retrieval in eutrophic inland waters. 2008 SPIE.  
Fast determination of total ginsenosides content in Ginseng powder by near infrared reflectance spectroscopy (EI CONFERENCE) 会议论文  OAI收割
ICO20: Biomedical Optics, August 21, 2005 - August 26, 2005, Changchun, China
作者:  Chen X.-D.;  Chen X.-D.
收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25
Near infrared (NIR) reflectance spectroscopy was used to develop a fast determination method for total ginsenosides in Ginseng (Panax Ginseng) powder. The spectra were analyzed with multiplicative signal correction (MSC) correlation method. The best correlative spectra region with the total ginsenosides content was 1660 nm1880 nm and 2230nm-2380 nm. The NIR calibration models of ginsenosides were built with multiple linear regression (MLR)  principle component regression (PCR) and partial least squares (PLS) regression respectively. The results showed that the calibration model built with PLS combined with MSC and the optimal spectrum region was the best one. The correlation coefficient and the root mean square error of correction validation (RMSEC) of the best calibration model were 0.98 and 0.15% respectively. The optimal spectrum region for calibration was 1204nm-2014nm. The result suggested that using NIR to rapidly determinate the total ginsenosides content in ginseng powder were feasible.  
Three-dimensional crack problem analysis using boundary element method with finite-part integrals 期刊论文  OAI收割
International Journal of Fracture, 1997, 卷号: 84, 期号: 2, 页码: 191-202
作者:  Qin TY;  Chen WJ(陈卫江);  Tang RJ
收藏  |  浏览/下载：817/35  |  提交时间：2009/08/03