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RISS 인기검색어
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- 저자 : Yaomin Li (검색결과 4 건)
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S-C3N4 Quantum Dot Decorated ZnO Nanorods to Improve Their Photoelectrochemical Performance
Haizhou He,Jie Li,Yang Liu,Qiong Liu,Faqi Zhan,Yaomin Li,Wenzhang Li,Jin Wen 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2017 NANO Vol.12 No.5
"S-doped C3N4 quantum dots (SCNQDs) were synthesized successfully by a low-temperature solid-phase method. The as-synthesised SCNQDs were decorated on ZnO nanorods by a dipping method. The ZnO nanorod films were prepared through a two-stage method, including pulse electrodeposition for depositing ZnO seed layer on fluorine doping SnO2 glass (FTO) and chemical bath for growing ZnO nanorods on the ZnO seed layer. The prepared samples were characterized via scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-vis absorption spectroscopy, X-ray photoelectron spectroscopy (XPS). The photoelectrochemical performances of the prepared samples were estimated using linear sweep voltammograms, electrochemical impedance spectra (EIS), Mott–Schottky, transient photocurrent and incident photon-to-current conversion efficiency (IPCE). The results show that the light absorption edge of the prepared SCNQDs increases from 326 nm (CNQDs) to 349 nm after S doping. The CNQD decorated ZnO photoanode film exhibits 1.34 times as high photocurrent as bare ZnO photoanode film. Importantly, the photocurrent increased to 1.79 times than bare ZnO photoanode film by S doping at 1.0 V (versus Ag/AgCl), which is attributed to a wider light absorption of SCNQDs and a better efficiency of electron transfer in the interface between SCNQDs and ZnO."
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Synergistic Bioactivities of Tea Polyphenols with Other Agents
Xiaohui Liu,Yaomin Wang,Bo Li,Youying Tu 한국차학회 2015 한국차학회지 Vol.- No.S
Co-treatment with phytochemicals or drugs is a promising approach to enhance the chemoprevention and chemotherapy in some diseases. Combination of compounds may overcome multidrug resistantance, decrease the effective dose of individual drug, reduce side effects and achieve clinical success. Tea (Camellia sinensis (L.) O. Kuntze, Theaceae) is second only to water in popularity as a beverage in the world, and its health benefits are mostly attributed to tea polyphe nols. This review has summarized the synergistic effects of tea polyphenols with other phytochemicals or drugs on antioxidation, anti microorganism, anticancer, improvement of neurodegenerative diseases and other functions including protection from nephrotoxicity, inhibition of sporozoite survival, promotion of hematopoietic stem cell proliferation, improvement of bone mass and weight maintenance. The synergism of tea polyphenols with other compounds indicates that combination of tea polyphenols with other agents is a promising approach for treatment of some diseases. In addition, the synergistic bioactivities of tea polyphenols with other phytochemicals or nutrients may overcome the poor bioavailability of tea polyphenols in vivo, and provide a new explanation for the health benefits of tea.
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GuanHua Jin,Suqin Liu,Yaomin Li,Yang Guo,Zhiying Ding 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2016 NANO Vol.11 No.11
Development of efficient electrocatalysts for the oxygen reduction reaction (ORR) remains a key issue for the commercialization of metal-air batteries. In this study, the novel structured Co3O4 nanoparticles-modified α-MnO2 nanorods supported on reduced graphene oxide (Co3O4-MnO2/ rGO) were synthesized with varying amounts of α-MnO2 via a facile two-step hydrothermal method. The relationship between the physical properties and the electrochemical results was investigated using X-ray diffraction spectrum, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, cyclic voltammograms, electrochemical impedance spectroscopy and rotating disk electrode. The as-prepared Co3O4– MnO2 nanohybrid exhibits enhanced catalytic activity for ORR under alkaline condition compared with MnO2/rGO and Co3O4/rGO. Furthermore, it mainly favors a direct 4e-reaction pathway for ORR, which is attributed to the well-designed structure, the synergistic effect between Co3O4 and α-MnO2, and the covalent coupling between the Co3O4-MnO2 and reduced graphene oxide. The role of Co3O4 in Co3O4–MnO2 hybrid for catalyzing ORR also has been illustrated by varying the mass ratio of Co3O4 and MnO2, which reveals that the Co3O4–MnO2 with the ratio of 1:1 has better catalytic activity.
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Minglan Yang,Ying Dong,Jianqing Tian,Li Yan,Yawen Chen,Huiying Qiu,Wei Liu,Yaomin Hu 한국유전학회 2020 Genes & Genomics Vol.42 No.9
Background Gitelman syndrome (GS) is a tubulopathy characterized by hypokalemia, hypomagnesemia, hypocalciuria and metabolic alkalosis, which is caused by mutations in SLC12A3 gene. Objective The objective of this study was to investigate the mutation of SLC12A3 gene in a pedigree with GS and analyzed the clinical manifestations. Methods Next-generation sequencing and Sanger sequencing were performed to explore the mutations of SLC12A3 gene in a GS pedigree that included a 59-year-old male GS patient and a total of 11 family members within three generations. Results A novel compound heterozygous mutation of SLC12A3 gene (c.1712T>C in exon14 and c.2986_2987ins GCT in exon26) was identifed by genetic testing in the proband. Moreover, we demonstrated that two brothers shared the same heterozygous mutation with the proband, but only one brother had the GS related symptoms. His nephew was the carrier of one mutation (c.1712T>C), and one of his brother, his sister and niece were carriers of the other (c.2986_2987ins GCT). Conclusions This is the frst study to report the novel pathogenic compound heterozygous mutation of SLC12A3 gene in GS. Our result further supports the lack of phenotype–genotype correlations in GS. Further functional studies are required to investigate pathophysiologic mechanisms of GS.
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