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- 저자 : Yuming Tian (검색결과 6 건)
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Tian, Yingying,Hu, Shiwei,Xu, Hui,Wang, Jingfeng,Xue, Changhu,Wang, Yuming 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.6
This study aims to investigate anti-adipogenic effects of long-chain bases from Cucumaria frondosa (Cf-LCBs) in vitro. Results showed that Cf-LCBs inhibited adipocyte differentiation and the expressions of CCAAT/enhancer binding proteins (C/EBPs) and peroxisome proliferators-activated receptor ${\gamma}(PPAR{\gamma})$. Cf-LCBs increased ${\beta}-catenin$ mRNA and nuclear translocation and increased its target genes, cyclin D1 and c-myc. Cf-LCBs enhanced fizzled and lipoprotein-receptor-related protein5/6 (LRP5/6) expressions, whereas wingless-type MMTV integration site10b (WNT10b) and glycogen syntheses kinase $3{\beta}(GSK3{\beta})$ remained unchanged. Cf-LCBs also reduced adipogenesis and recovered WNT/${\beta}-catenin$ signaling in the cells suffering from 21H7, a ${\beta}-catenin$ inhibitor. In addition, Cf-LCBs decreased triglyceride content and the expressions of lipogenesis genes. Cf-LCBs increased FFA levels and the expressions of lipidolytic factors. Cf-LCBs promoted the phosphorylation of adenosinemonophosphate-activated protein kinase (AMPK) and acetyl-CoA carboxylase. These findings indicate that Cf-LCBs inhibit adipogenesis through activation of WNT/${\beta}-catenin$ signaling and regulate lipid metabolism via activation of AMPK pathway.
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Yingying Tian,Shiwei Hu,Hui Xu,Jingfeng Wang,Changhu Xue,Yuming Wang 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.6
This study aims to investigate anti-adipogenic effects of long-chain bases from Cucumaria frondosa (Cf-LCBs) in vitro. Results showed that Cf-LCBs inhibited adipocyte differentiation and the expressions of CCAAT/enhancer binding proteins (C/EBPs) and peroxisome proliferators-activated receptor γ (PPARγ). Cf-LCBs increased β-catenin mRNA and nuclear translocation and increased its target genes, cyclin D1 and c-myc. Cf-LCBs enhanced fizzled and lipoprotein-receptor-related protein5/6 (LRP5/6) expressions, whereas wingless-type MMTV integration site10b (WNT10b) and glycogen syntheses kinase 3β (GSK3β) remained unchanged. Cf-LCBs also reduced adipogenesis and recovered WNT/β-catenin signaling in the cells suffering from 21H7, a β-catenin inhibitor. In addition, Cf-LCBs decreased triglyceride content and the expressions of lipogenesis genes. Cf-LCBs increased FFA levels and the expressions of lipidolytic factors. Cf-LCBs promoted the phosphorylation of adenosinemonophosphate- activated protein kinase (AMPK) and acetyl-CoA carboxylase. These findings indicate that Cf-LCBs inhibit adipogenesis through activation of WNT/β-catenin signaling and regulate lipid metabolism via activation of AMPK pathway.
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Degenerate Weakly (k<sub>1</sub>, k<sub>2</sub>)-Quasiregular Mappings
Gao, Hongya,Tian, Dazeng,Sun, Lanxiang,Chu, Yuming Department of Mathematics 2011 Kyungpook mathematical journal Vol.51 No.1
In this paper, we first give the definition of degenerate weakly ($k_1$, $k_2$-quasiregular mappings by using the technique of exterior power and exterior differential forms, and then, by using Hodge decomposition and Reverse H$\"{o}$lder inequality, we obtain the higher integrability result: for any $q_1$ satisfying 0 < $k_1({n \atop l})^{3/2}n^{l/2}\;{\times}\;2^{n+1}l\;{\times}\;100^{n^2}\;\[2^l(2^{n+3l}+1)\]\;(l-q_1)$ < 1 there exists an integrable exponent $p_1$ = $p_1$(n, l, $k_1$, $k_2$) > l, such that every degenerate weakly ($k_1$, $k_2$)-quasiregular mapping f ${\in}$ $W_{loc}^{1,q_1}$ (${\Omega}$, $R^n$) belongs to $W_{loc}^{1,p_1}$ (${\Omega}$, $R^m$), that is, f is a degenerate ($k_1$, $k_2$)-quasiregular mapping in the usual sense.
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Effects of Aging Time on the Antioxidant Activity of Pomelo Wine
Muying Du,Yuming You,Xiaojuan Zhao,Fusheng Zhang,Meiling Tian,Jianquan Kan 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.4
Variations in amino acid and volatile component contents, and in total flavonoid, polyphenol contents and their vitro antioxidant activities at different aging times of pomelo wine were investigated; scavenging rates against DPPH, ABTS, and ferric reducing antioxidant powers were also explored. Most amino acids reached maximum values in the third aging year; and volatile components of pomelo wine also indicated good wine quality in the third year. Total flavonoid and polyphenol contents in pomelo wine were increased and antioxidant activities enhanced during the first 3 years. Samples aged for 3 years had the highest total flavonoid and total polyphenol contents, and the strongest antioxidant activities (38.23±2.16% for DPPH· scavenging effect, 91.84±4.14% for ABTS· scavenging effect, and 0.90±0.07 mmol/L for FRAP value). These parameters gradually decreased after the 3 year period. A significant (p<0.05) correlation between antioxidant activity, and total flavonoid and polyphenol contents was identified.
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Maoke Liu,Ke Zhao,Yuming Tang,Daoqun Ren,Wanchun Yao,Xinhui Tian,Xinyu Zhang,Bin Yi,Bo Deng 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.3
Chinese Luzhou-flavor liquor is prepared using distillation of mixed, fermented grains, such as sorghum and rice. Fermentation occurs in cellars lined with pit mud containing microbes. The identity and community diversity of bacteria in pit mud of fermentation cellars contributes to the aromatic compounds of the liquor. In order to determine the contribution of genus Clostridium to this fermentation, the community diversity of Clostridium cluster I in pit mud of different cellar ages (1, 50, 100, and 400 years) was investigated based on denaturing gradient gel electrophoresis followed by 16S rRNA sequencing. Differences in the community structure within pit mud depended on wall and bottom layer cellar locations. A better understanding of the role of Clostridium in Luzhou-flavor liquor manufacture will be useful.
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Light-induced negative differential resistance effect in a resistive switching memory device
Xiaojun Wang,Yuanyang Wang,Ming Feng,Kaiyue Wang,Pinbo Bai,Yuming Tian 한국물리학회 2020 Current Applied Physics Vol.20 No.3
The negative differential resistance (NDR) effect was observed in a Pt/BiFeO3/TiO2/BiFeO3/Pt memory cell by using light-illumination as extra stimulation. Further, the coexistence appearances and gradually becomes obvious when the device is exposed to light-illumination, which display an excellent stability and reversibility of the coexistence of NDR and resistive switching (RS) at room temperature. Through analysis of the physical conduction mechanism, it is expected that a large number of photo-generated charge carriers are induced under light-illumination on the surface and interface of the heterojunction is responsible for the appearance of this coexistence phenomenon. Importantly, the NDR effect is strengthened by the competition transfer of charge carrier in the polarized electric field under light-illumination. This work shows that the coexistence of lightmodulated NDR and RS can deeply explore the potential applications of light-controlled multifunctional devices.
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