中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Simultaneous detection of harmful algae by multiple polymerase chain reaction coupled with reverse dot blot hybridization 期刊论文  OAI收割
HARMFUL ALGAE, 2014, 卷号: 35, 页码: 9-19
作者:  
Zhang, Chun Yun;  Chen, Guo Fu;  Liu, Yang;  Wang, Yuan Yuan;  Xu, Zhong
收藏  |  浏览/下载:27/0  |  提交时间:2015/06/11
土壤古菌的多尺度分布特征及其生态学机制 学位论文  OAI收割
博士, 北京: 中国科学院研究生院, 2012
曹鹏
收藏  |  浏览/下载:91/0  |  提交时间:2013/12/19
Molecular characterizations of oxytetracycline resistant bacteria and their resistance genes from mariculture waters of China 期刊论文  OAI收割
MARINE POLLUTION BULLETIN, 2006, 卷号: 52, 期号: 11, 页码: 1494-1503
作者:  
Dang, Hongyue;  Zhang, Xiaoxia;  Song, Linsheng;  Chang, Yaqing;  Yang, Guanpin
  |  收藏  |  浏览/下载:18/0  |  提交时间:2010/12/24
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:25/0  |  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.