中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共7条,第1-7条 帮助

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Toward the Origins of Quadruple Sulfur Isotope Anomalies in Modern Sulfate: A Multitracer Approach and Implications for Paleo-and Planetary Atmospheres 期刊论文  OAI收割
ACS EARTH AND SPACE CHEMISTRY, 2023, 卷号: 7, 期号: 4, 页码: 800-811
作者:  
Yin, Binyan;  Yu, Xiaoxiao;  Lin, Xiaomin;  Zhang, Zhisheng;  Zhang, Yanli
  |  收藏  |  浏览/下载:26/0  |  提交时间:2024/09/26
Kinetic study on the liquefaction of bagasse in polyhydric alcohols based on the cell wall component of the liquefied residue 期刊论文  OAI收割
IRANIAN POLYMER JOURNAL, 2020, 卷号: 29, 期号: 6, 页码: 535-541
作者:  
Zhang, Hairong;  Li, Qinglin;  Peng, Fen;  Guo, Haijun;  Xiong, Lian
  |  收藏  |  浏览/下载:46/0  |  提交时间:2020/10/29
Features of soil redistribution and major element migration in a karst hillslope of Southwest China 期刊论文  OAI收割
Journal of Mountain Science, 2018, 卷号: 15, 期号: 9, 页码: 1892-1908
作者:  
SONG Chang-shun;  JI Hong-bing;  Howard Omar BECKFORD;  CHU Hua-shuo;  ZHANG Kun;  WANG Shi-jie
  |  收藏  |  浏览/下载:54/0  |  提交时间:2019/05/31
Features of soil redistribution and major element migration in a karst hillslope of Southwest China 期刊论文  OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2018, 卷号: 15, 期号: 9, 页码: 1892-1908
作者:  
Song Chang-shun;  Ji Hong-bing;  Beckford, Howard Omar;  Chu Hua-shuo;  Zhang Kun
  |  收藏  |  浏览/下载:38/0  |  提交时间:2020/10/26
Identification of the Major Components of Resina Draconis Extract and Their Metabolites in Rat Urine by LC-ESI-MS (n) 期刊论文  OAI收割
CHROMATOGRAPHIA, 2013, 卷号: 76, 期号: 17-18, 页码: 1131-1139
作者:  
Liu, Fang;  Wu, Bin;  Xiao, Wei;  Wang, Zhenzhong;  Sun, Zhaolin
  |  收藏  |  浏览/下载:24/0  |  提交时间:2019/01/08
Apoptosis induction and G2/M arrest of 2-methyl-1,3,6-trihydroxy-9,10-anthraquinone from Rubia yunnanensis in human cervical cancer HeLa cells 期刊论文  OAI收割
PHARMAZIE, 2013, 卷号: 68, 期号: 4, 页码: 293-299
作者:  
Zeng, Guang-Zhi;  Fan, Jun-Ting;  Xu, Jun-Ju;  Li, Yan;  Tan, Ning-Hua
收藏  |  浏览/下载:47/0  |  提交时间:2015/05/14
2-Methyl-1,3,6-trihydroxy-9,10-anthraquinone (MTA)  one of the major components isolated from the traditional  Chinese medicine Rubia yunnanensis  exhibited inhibitory activity on the proliferation of several  human cancer cell lines. The results from an annexin V-FITC (fluoresein-5-isothiocyanate) apoptosis assay  and DNA content analysis showed that MTA exerted cytotoxicity via apoptosis induction and G2/M cell cycle  arrest in human cervical carcinoma HeLa cells. Further  MTA was found to induce apoptosis of HeLa cells  through the mitochondria-mediated pathway. It caused the translocation of Bax to the mitochondria and  release of cytochrome c into the cytosol  which caused the cleavage of caspase and poly(ADP-ribose)  polymerase and finally triggered the apoptosis. Furthermore  the p53/p21/Cdc2-cyclin B1 signaling was  found related to the G2/M arrest caused by MTA. The over-expression of p21 and down-expression of  cyclin B1 caused by MTA inactivated the Cdc2-cyclin B1 complex of G2/M checkpoint and finally caused  the G2/M arrest in HeLa cells. This study demonstrated that MTA is a potential anti-cancer component of  R. yunnanensis  a folk anti-cancer herb used in Yunnan  China.  
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:40/0  |  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.