机构

• 长春光学精密机械与物... [2]
• 物理研究所 [1]
• 地理科学与资源研究所 [1]
• 上海药物研究所 [1]
• 烟台海岸带研究所 [1]

采集方式

• OAI收割 [6]

内容类型

• 期刊论文 [4]
• 会议论文 [2]

发表日期

• 2023 [1]
• 2022 [1]
• 2018 [1]
• 2010 [2]
• 2006 [1]

学科主题

筛选

浏览/检索结果: 共6条，第1-6条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Comprehensive quality evaluation of processed Scrophulariae Radix from different regions of China using HPLC coupled with chemometrics methods 期刊论文  OAI收割 PHYTOCHEMICAL ANALYSIS, 2023, 页码: 14 作者:  Zhang, Mina;  Chen, Kaixian;  Wang, Pan;  Zhang, Liuqiang;  Li, Yiming   |  收藏  |  浏览/下载：25/0  |  提交时间：2023/04/10 chemometrics methods  HPLC-DAD  multiple simultaneous determination  processing methods  Scrophulariae Radix   Criteria for assessing carbon emissions peaks at provincial level in China 期刊论文  OAI收割 ADVANCES IN CLIMATE CHANGE RESEARCH, 2022, 卷号: 13, 期号: 1, 页码: 131-137 作者:  Wang, Min;  Wang, Peng;  Wu, Liang;  Yang, Ru -Pu;  Feng, Xiang-Zhao   |  收藏  |  浏览/下载：29/0  |  提交时间：2022/09/21 Carbon emission peak (CEP)  Influencing factors  Determination methods  Stage classification  Provincial level   Determination of iron in seawater: From the laboratory to in situ measurements 期刊论文  OAI收割 TALANTA, 2018, 卷号: 188, 页码: 135-144 作者:  Lin, Mingyue;  Hu, Xueping;  Pan, Dawei;  Han, Haitao   |  收藏  |  浏览/下载：23/0  |  提交时间：2020/07/08 Iron  Determination methods  In situ  Seawater   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：28/0  |  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.   Direct methods beyond small-molecule crystallography 期刊论文  OAI收割 PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2010, 卷号: 207, 期号: 12, 页码: 2621 Fan, HF 收藏  |  浏览/下载：24/0  |  提交时间：2013/09/17 RESOLUTION ELECTRON-MICROSCOPY  ANOMALOUS SCATTERING DATA  SINGLE ISOMORPHOUS REPLACEMENT  COMBINING DIRECT-METHODS  INCOMMENSURATE MODULATED STRUCTURES  X-RAY-ANALYSIS  JOINT PROBABILITY-DISTRIBUTION  CRYSTAL-STRUCTURE SOLUTION  PHASE DETERMINATION  STRUCTURE REFINEMENT   The study on the near infrared spectrum technology of sauce component analysis (EI CONFERENCE) 会议论文  OAI收割 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Li S.;  Wang C.;  Chen X.;  Chen X.;  Chen X. 收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25 The author  Shangyu Li  engages in supervising and inspecting the quality of products. In soy sauce manufacturing  quality control of intermediate and final products by many components such as total nitrogen  saltless soluble solids  nitrogen of amino acids and total acid is demanded. Wet chemistry analytical methods need much labor and time for these analyses. In order to compensate for this problem  we used near infrared spectroscopy technology to measure the chemical-composition of soy sauce. In the course of the work  a certain amount of soy sauce was collected and was analyzed by wet chemistry analytical methods. The soy sauce was scanned by two kinds of the spectrometer  the Fourier Transform near infrared spectrometer (FT-NIR spectrometer) and the filter near infrared spectroscopy analyzer. The near infrared spectroscopy of soy sauce was calibrated with the components of wet chemistry methods by partial least squares regression and stepwise multiple linear regression. The contents of saltless soluble solids  total nitrogen  total acid and nitrogen of amino acids were predicted by cross validation. The results are compared with the wet chemistry analytical methods. The correlation coefficient and root-mean-square error of prediction (RMSEP) in the better prediction run were found to be 0.961 and 0.206 for total nitrogen  0.913 and 1.215 for saltless soluble solids  0.855 and 0.199 nitrogen of amino acids  0.966 and 0.231 for total acid  respectively. The results presented here demonstrate that the NIR spectroscopy technology is promising for fast and reliable determination of major components of soy sauce.