Quantitative analysis combined with chromatographic fingerprint and antioxidant activities for the comprehensive evaluation of Compound Danshen Tablets

2017 ◽  
Vol 40 (6) ◽  
pp. 1244-1253 ◽  
Author(s):  
Jiao Chen ◽  
Jiayue Gao ◽  
Guoxiang Sun
Keyword(s):  
Quantitative Analysis ◽  
Comprehensive Evaluation ◽  
Antioxidant Activities ◽  
Chromatographic Fingerprint

Combinative method using multi-components quantitation by single reference standard and HPLC fingerprint for comprehensive evaluation of Rhodiola crenulata H.Ohba

2014 ◽  
Vol 6 (15) ◽  
pp. 5891-5898 ◽  
Author(s):  
Yiyang Du ◽  
Qing Li ◽  
Jingjing Liu ◽  
Yidi Yin ◽  
Kaishun Bi
Keyword(s):  
Quantitative Analysis ◽  
Comprehensive Evaluation ◽  
Reference Standard ◽  
Fingerprint Analysis ◽  
Chromatographic Fingerprint ◽  
Hplc Fingerprint ◽  
Rhodiola Crenulata ◽  
Different Origins

HPLC-DAD quantitative analysis and chromatographic fingerprint analysis were developed to evaluate the quality of Rhodiola crenulata H.Ohba from different origins.

scholarly journals Quantitative Analysis of Comprehensive Influence of Music Network Based on Logistic Regression and Bidirectional Clustering

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Yi-Kun Zhao ◽  
Guo-Qing Wang ◽  
Xiao-Xiao Zhan ◽  
Peng-Hui Yang
Keyword(s):  
Logistic Regression ◽  
Quantitative Analysis ◽  
Comprehensive Evaluation ◽  
Dynamic Network ◽  
Measurement Model ◽  
Music Similarity ◽  
Pagerank Algorithm ◽  
Change Factors ◽  
Cluster Analysis Method ◽  
The Impact

This paper makes a quantitative analysis of the comprehensive influence of music networks. Firstly, 11 music features are selected from energy, popularity, and other aspects to build a comprehensive evaluation index of music influence, and the PageRank algorithm is used to quantify the music influence. Secondly, the multiobjective logistic regression is used to construct the music similarity measurement model and, combined with music influence and music similarity, to judge whether the influence of different musicians is the actual influence. Thirdly, the influence and similarity of the same music genre and different music genres are analyzed by using the two-way cluster analysis method. Finally, the lasso region is used for feature selection to obtain the change factors in the process of music evolution and analyze the dynamic changes in the process of music development. Therefore, this paper uses network science to build a dynamic network to analyze the similarity of music, the evolution process, and the impact of music on culture, which has certain research significance and practical value in the fields of music, history, social science, and practice.

Optimization Research on Spares Supply for some Equipment Based on Fuzzy Comprehensive Evaluation

2012 ◽  
Vol 468-471 ◽  
pp. 2364-2369
Author(s):  
Qing Li ◽  
Wei Yang ◽  
Peng Hui Rong
Keyword(s):  
Quantitative Analysis ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Scientific Management ◽  
Complicated Structure ◽  
Evaluation Matrix

Because of large equipment with complicated structure, many kinds of components and tough management, various factors which impacting the equipment exerting its effectiveness level and techniques of handling for their quantification are discussed and the consumed law is studied aiming at fully exerting the equipment’s effectiveness. The fuzzy matrixes are determined and the comprehensive evaluation matrix calculated by the theory and methods of fuzzy comprehensive evaluation. Based on the results from quantitative analysis, the spares’ importance in the process of management and supply is made certain. It provides basis for the spares’ scientific management and supply.

Study on the Maintenance Capacity of “Man-Machine System” Based on Fuzzy Comprehensive Evaluation

2012 ◽  
Vol 203 ◽  
pp. 479-483
Author(s):  
Yong Jun Sun ◽  
Yi Qu
Keyword(s):  
Complex System ◽  
Quantitative Analysis ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Fuzzy Mathematics ◽  
Machine System ◽  
The Core ◽  
Evaluation Algorithm ◽  
The Stability ◽  
Index Weight

This paper, in accordance with the maintenance capacity of “Man-Machine System”, holds the core of the “Man-Machine System” and employs the analysis methods of the complex system, brings forward the model of the three-layer comprehensive evaluation based on fuzzy mathematics, then brings out the methods of the index weight and studies the maintenance capacity’s evaluation algorithm on the foundation of the quantitative analysis. In the last it gives the application of the model and algorithm by using the instances and studies the changing maintenance capacity including the stability and the undulation, which provides one thought for scientifically evaluating the maintenance capacity of “Man-Machine System”.

scholarly journals Chromatographic fingerprinting and quantitative analysis for the quality evaluation of Xinfeng capsule

2020 ◽  
pp. 1-7
Author(s):  
Leilei Gao ◽  
Fang Wang ◽  
Mei Meng
Keyword(s):  
Quantitative Analysis ◽  
High Performance ◽  
Quality Evaluation ◽  
Hierarchical Cluster ◽  
Array Detector ◽  
Diode Array Detector ◽  
Chromatographic Fingerprint ◽  
Xinfeng Capsule ◽  
Single Marker ◽  
The Common

Abstract A simple, accurate and sensitive method of high performance liquid chromatography (HPLC) with diode array detector was established to identify Xinfeng capsules and systematically evaluated its quality, based on chromatographic fingerprint integrated with the similarity analysis, hierarchical cluster analysis and the quantitative analysis of multi-components by single marker (QAMS). In this study, 18 peaks were selected as the common peaks to evaluate the similarities among different batches (S1–S10) of Xinfeng capsules samples, which were manufactured in the First Affiliated Hospital of Anhui University of Chinese Medicine with a three-year span. Compared to control fingerprint, the similarities values for 10 batches of samples were more than 0.90. Moreover, by analyzing the reference of astragalus, the chromatogram of astragalus was developed, and 10 common peaks of astragalus were identified. More importantly, simultaneous quantification of three markers in Xinfeng capsule, including Calycosin-7-glucoside, calycosin and Formononetinaldehyde was performed, the three constituents showed good regression (R > 0.999) within linear ranges, and their recoveries were within the range of 97.6–101.5%. The validation results showed that the developed method was specific, accurate, precise and robust. This study demonstrated that the developed method offers an efficient, reliable and practical approach for systematic quality evaluation of Xinfeng capsule.

scholarly journals Comprehensive Evaluation of Parameters Affecting One-Step Method for Quantitative Analysis of Fatty Acids in Meat

Metabolites ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 189 ◽  
Author(s):  
Michael P. Agnew ◽  
Cameron R. Craigie ◽  
Gayani Weralupitiya ◽  
Marlon M. Reis ◽  
Patricia L. Johnson ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Quantitative Analysis ◽  
Comprehensive Evaluation ◽  
Acid Catalyst ◽  
Effect Of Temperature ◽  
Reaction Yield ◽  
Step Method ◽  
Freeze Dried ◽  
One Step ◽  
Meat Samples

Despite various direct transmethylation methods having been published and applied to analysis of meat fatty acid (FA) composition, there are still conflicting ideas about the best method for overcoming all the difficulties posed by analysis of complex mixtures of FA in meat. This study performed a systematic investigation of factors affecting a one-step method for quantitative analysis of fatty acids in freeze-dried animal tissue. Approximately 280 reactions, selected using factorial design, were performed to investigate the effect of temperature, reaction time, acid concentration, solvent volume, sample weight and sample moisture. The reaction yield for different types of fatty acids, including saturated, unsaturated (cis, trans and conjugated) and long-chain polyunsaturated fatty acids was determined. The optimised condition for one-step transmethylation was attained with four millilitres 5% sulfuric acid in methanol (as acid catalyst), four millilitres toluene (as co-solvent), 300 mg of freeze-dried meat and incubation at 70 °C for 2 h, with interim mixing by inversion at 30, 60 and 90 min for 15 s. The optimised condition was applied to meat samples from different species, covering a broad range of fat content and offers a simplified and reliable method for analysis of fatty acids from meat samples.

scholarly journals Optimization of Ultrasound-Assisted Extraction Using Response Surface Methodology for Simultaneous Quantitation of Six Flavonoids in Flos Sophorae Immaturus and Antioxidant Activity

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1767 ◽  
Author(s):  
Sanhong Fan ◽  
Gege Yang ◽  
Jinhua Zhang ◽  
Jiani Li ◽  
Baoqing Bai
Keyword(s):  
Response Surface Methodology ◽  
Free Radicals ◽  
Response Surface ◽  
Comprehensive Evaluation ◽  
Antioxidant Activities ◽  
Total Flavonoids ◽  
Ultrasound Assisted Extraction ◽  
Antioxidant Power ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Ultrasound-assisted extraction (UAE) was applied to extract rutin (RU), nicotiflorin (NI), narcissoside (NA), kaempferol (KA), isorhamnetin (IS), quercetin (QU), and total flavonoids of Flos Sophorae Immaturus (TFFSI) from Flos Sophorae Immaturus (FSI). Through single factor test and response surface methodology (RSM), the optimal extraction conditions were concluded as follows: ethanol concentration 70%, time 30 min, temperature 61 °C, and liquid/solid ratio 15.30 mL/g, respectively. The actual extraction rates of RU, NI, NA, KA, IS, QU, and TFFSI were 14.6101%, 2.9310%, 7.1987%, 0.1041%, 0.4920%, 2.7998%, and 26.4260%, respectively. The experimental results demonstrated that the extraction method with accuracy and efficiency could be used for the comprehensive evaluation quality control of extracts from FSI. The antioxidant activities of hydroalcoholic extraction from FSI on 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS•+), superoxide anion (•O2−) free radicals, and ferric reducing/antioxidant power (FRAP) were assessed. The results showed that the antioxidation activities of extracts on DPPH, ABTS•+, and •O2− free radicals were reached 89.29%, 97.86%, and 56.61%, and 81.4% in FRAP at 1.0 mg/mL, respectively. The antioxidant capacity of FSI extract was positively correlated with the amount of total flavonoids.

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