Výsledky vyhledávání - "Li Chun-yang"

Akademický článek

Optimization of complex enzymatic extraction process of steroidal glycosides from Cynanchum auriculatum Royle ex Wight and its hepatoprotective activity

Autor: SONG Wan-yu, DAI Jing, FENG Jin, LI Chun-yang, MA Yong-qiang

Publikováno v: Shipin yu jixie, Vol 39, Iss 7, Pp 172-179,201 (2023)

Objective: Response surface methodology was used to optimize the extraction process of steroidal glycosides from Cynanchum auriculatum Royle ex Wight by complex enzymatic method, and its effects on alcohol dehydrogenase activity and human hepatoma ce

Externí odkaz: https://doaj.org/article/79cb62ed19e94f73b1ca4edb35a7d901

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Akademický článek

Variation sources analysis and monitoring of measurement system of food packaging paper based on HS GC/MS

Autor: ZHAO Hai-juan, LI Wen-wei, WAGN Hui, DU Shan-tao, WANG Hai-yu, LI Chun-yang

Publikováno v: Shipin yu jixie, Vol 38, Iss 8, Pp 87-93 (2022)

Objective: To improve the accuracy and validity of the measurement data of solvent residues in food packaging paper. Methods: Taking the HS GC-MS measurement system as the research object, variation sources in the measurement process was separated by

Externí odkaz: https://doaj.org/article/9fa31361b21e4bca85de0f13d75d161d

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Akademický článek

Polyphenol Profiles and Antioxidant Properties of Ethanol Extracts from Osmanthus Fragrans (Thunb.) Lour. Flowers

Autor: Li Hong-Ling, Chai Zhi, Shen Garry X., Li Chun-Yang

Publikováno v: Polish Journal of Food and Nutrition Sciences, Vol 67, Iss 4, Pp 317-326 (2017)

This study evaluated the antioxidant activity of ethanol extracts of Osmanthus fragrans (Thunb.) Lour. flowers (EOF) and identified phenolic compounds in EOF using liquid chromatography-mass spectrometry. Nine compounds, 3-O-caffeoylquinic acid, caff

Externí odkaz: https://doaj.org/article/da3077fb5b50409d858c4ce1b0652218

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Akademický článek

Comparison research of control mode of frequency-conversion speed-regulation of electrical traction shearer

Autor: LI Chun-yang

Publikováno v: Gong-kuang zidonghua, Vol 39, Iss 9, Pp 43-45 (2013)

On basis of analysis of principle of control mode of frequency converter, experiment platform of control mode was established by use of Drivewizard to monitor output current and frequency of the frequency converter, torque and speed of motor, so as t

Externí odkaz: https://doaj.org/article/e96bfe682abb43cdb502def7d6112804

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