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您的检索式：作者名="NIE Changping"
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| 1 | Conformal CMC-Surfaces in Lorentzian Space Forms显示文摘让 Q^3 是 Lorentzianspace 形式 R_1~3, S_1~3 和 H_1~3 的普通保角的 compactification 空间。我们在 Q^3.It 学习像空间的表面的保角的几何学被看在 Q^3 的保角的 CMC 表面必须是的那个任何东西正式等价于一个常数的反对在 R_1~3, S_1~3 或 H_1~3 的平均数弯曲表面。我们也看那是否 x: M → Q^3 是 g 其保角的度量标准有经常的弯曲 K 的 space-likeWillmore 表面,然后任何一个 K = -1 和 isconformally 等价于在 R_1~3 的最小的表面的 x ,或 K = 0 并且 x 正式是反对等价于表面 H^1 (1/( 2 ^( 1/2 )))在 H_1~3 的 x H^1 (1/( 2 ^( 1/2 )))。 | Changxiong NIE Xiang MA Changping WANG | 2007 | Chinese Annals of Mathematics,Series B2007，28，3： | 4 |
| 2 | Inhibitory Activities on α-Glucosidase and Composition Analysis of Different Fractions of Ethanol Extracts from Actinidia chinensis Radix显示文摘Tlie inhibitory actions of ethyl acetate,n-butanol and water fractions from Actinidia chinensis Radix (A. chinensis Radix) ethanol extracts on glucosidase were investigated. We found that the inhibitory activity of different ethanol extract fractions on α-glucosidase is concentration-dependent. At the same concentration, the ethyl acetate and n-butaiiol fractions showed higher inliibitory activities on gglucosidase in comparison witli acarbose. We then determined the chemical constituents of tlie ethyl acetate and n-butanol fractions through ultra performance liquid cliromatography-triple-time of flight/mass spectrometry(UPLC-Triple-TOF/MS). Based on the mass spectrometry analysis and the databases Scitinder and Reaxys, 21 compoiinds(A1-A21) were identified from the ethyl acetate fraction. In addition, 11 of those compounds(A2, A3, A5, A6, A8, A10, A11, A13, A15, A19, A20) were identified for the first time from A. chinensis Radix. We also identified 14 compounds(A22-A32 and A4-A6) from tlie w-butanol fraction and compound A29 is a new natural product. From the n-butanol fraction, 7 additional compounds (A22, A25, A27, A28, A30-A32) were identified from A. chinensis Radix for the first time. | NIE Changping YANG Jun WU Dan WAN Luping LIANG Guangping | 2019 | Chemical Research in Chinese Universities2019，35，5： | 0 |
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