中国科学院机构知识库网格系统: 检索

A five-dimensional data collection strategy for multicomponent discovery and characterization in Traditional Chinese Medicine: Gastrodia Rhizoma as a case study 期刊论文 OAI收割
JOURNAL OF CHROMATOGRAPHY A, 2021, 卷号: 1653, 页码: 12
作者: Zhu, Haodong; Wu, Xingdong

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收藏 | 浏览/下载：64/0 | 提交时间：2021/11/04

Gastrodia Rhizoma Multidimensional data acquisition Offline 2D-LC-IMS-DIA MS MS Neutral loss (NLs) Collision cross section (CCS)

On the Terrestrial Gamma Ray Flashes Preceding Narrow Bipolar Events 期刊论文 OAI收割
Geophysical Research Letters, 2021, 卷号: 48, 页码: e92160
作者: HXMT

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收藏 | 浏览/下载：24/0 | 提交时间：2022/02/08

low frequency magnetic sferics narrow bipolar events (NBEs) relativistic feedback mechanism Terrestrial Gamma ray Flashes (TGFs) Abstract: Narrow bipolar events (NBEs) are occasionally reported to occur within a few ms after Terrestrial Gamma ray Flashes (TGFs), while the formation mechanism remains mysterious partially due to the lack of sufficient observations. Here, nine more TGFs of this scenario are reported with concurrent LF sferics and lightning location data. The gamma ray production in these TGFs preceded the occurrence of NBEs by a minimum of 60 µs up to 13.5 ms, and no other fast leader discharge was found within 20 ms before the TGF. The TGF preceded positive NBEs occurred at altitudes of 8.6-11 km in thunderstorms, likely in the high electric field (E field) region of lightning initiation. The analyses show that the NBE preceding TGFs bear harder energy spectrum with larger proportion of high energy photons than EIP related TGFs produced in association with lightning leader. Our findings support the relativistic feedback mechanism of gamma ray generation in the large scale thunderstorm E field.

A Deep Learning-Based Tumor Classifier Directly Using MS Raw Data 期刊论文 OAI收割
PROTEOMICS, 2020, 页码: 7
作者: Dong, Hao; Liu, Yi; Zeng, Wen-Feng; Shu, Kunxian; Zhu, Yunping

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收藏 | 浏览/下载：26/0 | 提交时间：2020/12/10

deep learning MS data proteomics tumor classifier

Simultaneous Quantification of Forsterite Content and Minor-Trace Elements in Olivine by LA-ICP-MS and Geological Applications in Emeishan Large Igneous Province 期刊论文 OAI收割
MINERALS, 2020, 卷号: 10, 期号: 7, 页码: 16
作者: Wu, Shitou; Wu, Yadong; Yang, Yueheng; Wang, Hao; Huang, Chao

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收藏 | 浏览/下载：16/0 | 提交时间：2020/09/28

olivine geochemistry LA-ICP-MS forsterite content minor-trace elements data reduction approach

QPMASS: A parallel peak alignment and quantification software for the analysis of large-scale gas chromatography-mass spectrometry (GC-MS)-based metabolomics datasets 期刊论文 OAI收割
JOURNAL OF CHROMATOGRAPHY A, 2020, 卷号: 1620
作者: Duan, Lixin; Ma, Aimin; Meng, Xianbin; Shen, Guo-an; Qi, Xiaoquan

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收藏 | 浏览/下载：13/0 | 提交时间：2022/03/01

QPMASS GC-MS Metabolomics Data analysis Parallel computing

Evaluation and reduction of the analytical uncertainties in GC-MS analysis using a boundary regression model 期刊论文 OAI收割
TALANTA, 2017, 卷号: 164, 期号: 0, 页码: 141-147
作者: Jiang, Guibin; Liu, Jiyan; Yu, Miao; Hou, Xingwang; Liu, Qian

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收藏 | 浏览/下载：29/0 | 提交时间：2018/07/26

Data Visualization Gc-ms Environmental Analysis Regression Model

With Guide of Spike-in Experiment for Optimizing Workflow of LC-MS data Processing in Metabolomics 期刊论文 OAI收割
NATURAL PRODUCT COMMUNICATIONS, 2017, 卷号: 12, 期号: 8, 页码: 1295-1300
作者: Yan, Bing-peng; Cao, Chun-mei; Hou, Jin-jun; Bi, Qi-rui; Yang, Min

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收藏 | 浏览/下载：49/0 | 提交时间：2019/01/08

Metabolomics Liquid chromatography-mass spectrometry (LC-MS) Data processing XCMS Spike-in experiment

Strategies for structure elucidation of small molecules using gas chromatography-mass spectrometric data 期刊论文 OAI收割
trac-trends in analytical chemistry, 2013, 卷号: 47, 页码: 37-46
作者: Zhang, Liangxiao; Tang, Chunlan; Cao, Dongsheng; Zeng, Yingxu; Tan, Binbin

收藏 | 浏览/下载：39/0 | 提交时间：2014/09/11

Gas chromatography coupled to mass spectrometry (GC-MS) Data mining Identification accuracy Information extraction Mass spectral characteristics Mass spectral transfer Multivariate analysis Retention index (RI) Small molecule Structure elucidation

Resolving co-eluting chromatographic patterns by means of dissimilarity analysis in iterative target transformation factor analysis 期刊论文 OAI收割
journal of chromatography a, 2011, 卷号: 1218, 期号: 40, 页码: 7219-7225
作者: Zhang, Liangxiao; Zhang, Wan; Cao, Dongsheng

收藏 | 浏览/下载：36/0 | 提交时间：2015/11/12

The Research of real time auto-recognition of the moire fringe (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Wang M.-J.; Wu Z.-G.

收藏 | 浏览/下载：18/0 | 提交时间：2013/03/25

Measuring the movement of raster by the method of moire fringe has the advantage of high sensitivity high resolution and non-contacted measurement. The characteristic of moire fringe is that the image is white alternate with black the angle of the stripes is uniform the width of the stripes is uniform the terminators of the stripes aren't clear. A fast method that can figure out the width and angle of the moire fringe precisely is put forward in this paper. It calculates the angle the stripes firstly. According to the principle of the minimum mean squared error (MMSE) the closer a series of data is the smaller the value of the MMSE will be. The method is described as follows: It takes the image's center as the origin 180 beelines pass through the origin with the same angle interval. it calculates the value of the minimum mean squared error of the 180 beelines and find out the least one among those then the angle of the moire fringe comes out primarily. In order to improving the calculating precision of moire fringe 60 equal angles are divided in the neighborhood of the angle then a precise angle of moire fringe is calculated according to the principle of the MMSE. After getting out the angle of the moire fringe we begin to calculate the width of moire fringe. A line vertical with the moire fringe is drawn and we can get the width of the moire fringe by the vertical line. In order to get over the influence of the noise an effective area with the shape of diamond is selected in the image. The data of area is accumulated and projected according to the direction of moire fringe and a sine curve come out. The width of moire fringe can be obtained by getting the position of the first wave crest the position of the last wave crest and the number of wave crest. Experiments prove that the precision of the method put forward in this paper is enhanced in comparison with the traditional frequency method the precision of width calculation achieves to 99.6% according to the evaluation indicators of width detection error. The computing speed is boosted largely compared with traditional method and it can achieve with 15 ms that satisfying the demand of real time. 2011 SPIE.