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Application of NIR Spectroscopy in Explosive Powder Surface Contamination Remote Detection 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 卷号: 41
作者:  
Li Da-cheng;  Wang An-jing;  Li Yang-yu;  Cui Fang-xiao;  Wu Jun
  |  收藏  |  浏览/下载:34/0  |  提交时间:2021/04/26
Raman and Visible-Near Infrared Spectra of Cu(InGa)Se-2 Films 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 卷号: 36, 期号: 10, 页码: 3197-3201
作者:  
Xu Dong-mei;  Pan Kun;  Liu Xu-wei;  Wang Xue-jin;  Wang Wen-zhong
收藏  |  浏览/下载:26/0  |  提交时间:2016/12/13
Qualitative determination of the components of textile products using near infrared spectroscopy (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photonics and Optoelectronics, SOPO 2010, June 19, 2010 - June 21, 2010, Chengdu, China
作者:  
Chen X.;  Chen X.;  Chen X.;  Wang D.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
In the paper  A total of 40 pure or two-mixed textile weaves were prepared and classification of these samples was introduced using near infrared spectroscopy (NIRS)  all textile samples are selected among four classes  which are Cotton-Terylene  Cotton-Polyurethane  Cotton and Terylene  according to theirs components. Near infrared diffuse reflectance spectra of the samples were collected  Mahalanobis distance was used to discriminate the samples coupled with principle components analysis (PCA)  the results showed that near infrared spectroscopy could determine which class one textile weave belongs to easily comparing with traditional methods. In addition  the expectation of the further research on qualitative determination of textile products by NIR technology was discussed in the end of this paper. 2010 IEEE.  
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:26/0  |  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.  
A novel method of calculation-separating second order spectrum in grating spectrometers (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Xiang Y.
收藏  |  浏览/下载:14/0  |  提交时间:2013/03/25
In grating spectrometers  according to wavelength  short-wave second-order spectrum superimposes on long-wave spectrum with the wavelength twice as long as the short-wave. Usually spectrum of long-wave range is got via preventing the superimposition of short-wave second-order spectrum by cut-off filters. This paper analyses the characteristic of the ratio of short-wave second-order spectrum in long-wave superimposing spectral range to first-order spectrum in short-wave free spectral range of diffraction gratings. The paper studies a novel method of obtaining long-wave spectrum via calculation-separating short-wave second-order spectrum from mixed spectra in long-wave superimposing spectral range by data processing with the spectrum of free spectral range and the ratio (instrumental parameter) of short-wave second-order spectrum to first-order spectrum measured beforehand. Spectrum-measurement experiments were carried out by VIS-NIR spectrometers (0.36 - 1.0m). That the spectrum data got via calculation-separation coincide with those got via cut-off filter indicates that spectrum can be obtained by processing the measured date without filters in whole operating wavelength.  
Spectral studies of some C-60 complexes with TTF-derived donors 期刊论文  OAI收割
POLISH JOURNAL OF CHEMISTRY, 1998, 卷号: 72, 期号: 5, 页码: 869-876
作者:  
Graja, A;  Tanatar, MA;  Li, YL;  Zhu, DB
  |  收藏  |  浏览/下载:11/0  |  提交时间:2019/04/09