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How Does Financial Technology Drive Enterprise Innovation in China?
Yuying Gao,Shanyue Jin 한국무역연구원 2022 The International Academy of Global Business and T Vol.18 No.1
Purpose – As a new product of the traditional financial empowerment form through digital technology, financial technology (Fintech) allows a new financial service model and brings changes to enterprises. This study aims to find the channels through which Fintech affects enterprise innovation in China from the perspective of financial management. Design/Methodology/Approach – This study constructs an econometric model using the data of Chinese A-share listed companies from 2011 to 2019 to examine the influence of Fintech development on enterprise innovation and its transmission mechanism. Findings – The empirical results show that the development of Fintech does indeed have a driving effect on enterprise innovation. Fintech promotes enterprise innovation by alleviating financial constraints, reducing the enterprise financial expense rate, and increasing the stability of the enterprise against the backdrop of the highquality development of China’s economy. Research Implications – This study implies that actively promoting the development of the Fintech industry can promote the innovative development of enterprises; thus, policy and technical support are indispensable for promoting the development of Fintech. Also, the government should improve the regulatory system of Fintech to prevent financial risk.
Study on phase inversion parameters of PLGA membrane
Yuying Xie(시에위잉),Jong-Soon Park(박종순),Myung-Kiu Chung(정명규),Soon-Kook Kang(강순국) 한국산학기술학회 2014 한국산학기술학회 학술대회 Vol.- No.-
The PLGA membrane with interconnected pores was formed by phase inversion. According to the membrane surface and cross section pore (SEM image), inter pore was linked. The measured mechanical strength of the membrane was decreased with a membrane thickness. The pore size and porosity of PLGA membrane was decreased with a content of PLGA.
Self-supported ZIF-coated Co2P/V3P bifunctional electrocatalyst for high-efficiency water splitting
Yuying Yang,Jingyue Yang,Qin Zhou,Dalan Qian,Yaling Xiong,Zhongai Hu 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.110 No.-
Exploring high-efficiency dual-functional electrocatalysts to drive electrochemical water splitting is ofgreat importance for advancement of renewable hydrogen energy. Herein, a hierarchical core–shell structureelectrocatalyst ZIF-Co2P/V3P is in situ grown on Ni foam (abbreviated as ZIF-Co2P/V3P@NF) by a stepwisemethod. Firstly, Co, V layered double hydroxides (CoV-LDHs) is grown directly on Ni foam (NF)substrate by solvothermal method. Secondly, CoV-LDHs@NF is transferred into 2-MeIm solution andits surface is coated with a layer of imidazolate zeolite skeleton (ZIF). Finally, ZIF-Co2P/V3P@NF catalystis obtained by low-temperature phosphorization method. The performance of hydrogen evolution reaction(HER) and oxygen evolution reaction (OER) can be adjusted by tuning molar ratio of Co/V, and theoptimized ZIF-Co2P/V3P@NF-2 manifests superior performance due to its core–shell structure coveredby ZIF skeleton, rich heterogeneous interfaces, as well as the positive synergistic interaction betweenthe Co2P and V3P. The overpotentials are only 57 mV@10 mA cm2 for HER and 261 mV@10 mA cm2for OER. Remarkably, the alkaline electrolyzer assembled with ZIF-Co2P/V3P@NF-2 catalyst acquires asmall operating voltage of 1.54 V to drive the current density of 10 mA cm2 and displays excellentlong-term durability. This work provides a novel opinion for design and preparation of non-noble metalelectrocatalysts.
Yuying Qi,Tinghui Hu,Kai Li,Renqing Ye,Zuodong Ye 한국유방암학회 2015 Journal of breast cancer Vol.18 No.3
Purpose: Protein phosphatase 4 regulatory subunit 1 (PP4R1), as an interaction partner of the catalytic serine/threonine-protein phosphatase 4 catalytic subunit has been shown to involve in cellular processes and nuclear factor κB signaling. However, the functions of PP4R1 in human breast cancers remain unclear. This study is designed to explore the effect of PP4R1 knockdown on the biological characteristics of breast cancer cells. Methods: A lentivirus-mediated short hairpin RNA (shRNA) was designed to knockdown the expression of PP4R1 in ZR-75-30 breast cancer cells. The efficiency of lentivirus-mediated shRNA infection was determined using fluorescence microscopy to observe lentivirus-mediated green fluorescent protein expression and confirmed to be over 80%. PP4R1 expression in infected ZR-75-30 cells was detected by quantitative real-time polymerase chain reaction and western blot analysis. Cell proliferation and colony formation ability were measured by 3-(4,5-dimethyl- 2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay and colony formation assay, respectively. Flow cytometry was used to measure cell cycle progression and cell apoptosis. In addition, apoptosis makers, including poly-ADP-ribose polymerase (PARP) and Caspase-3, were investigated in PP4R1- silenced ZR-75-30 cells by western blot assay. Results: We successfully constructed lentivirus-mediated shRNA to target PP4R1 in ZR-75-30 cells. MTT assay and colony formation assay showed the loss of PP4R1 suppressed the proliferation of ZR-75-30 cells. Flow cytometry analysis indicated cell cycle arrest and increased cell apoptosis in PP4R1 knockdown cells. Further, the apoptosis response in cells depleted of PP4R1 was illustrated by downregulation of PARP and upregulation of Caspase- 3. Conclusion: Our results suggest that PP4R1 could promote breast cancer cell proliferation and might play a vital role in breast cancer occurrence.
The Inhibitory Effect of Ginseng Pectin on L-929 Cell Migration
Yuying Fan,Hairong Cheng,Dan Liu,Xu Zhang,Bo Wang,Lin Sun,Guihua Tai,Yifa Zhou 대한약학회 2010 Archives of Pharmacal Research Vol.33 No.5
We tested the effects of ginseng pectin prepared by enzymatic hydrolysis of ginseng polysaccharides on cell migration. Ginseng pectin impaired the migration of L-929 cells and reduced their migration speed by up to 50% of control in the presence or absence of serum, suggesting it worked on both serum-dependent and serum-independent migration pathways. Ginseng pectin impaired cell migration via decreased cell spreading. These findings represent a significant contribution towards understanding the bioactivities of ginseng polysaccharides and applying them to health food and medicine.
A ZVS-SVM Method for Grid Inverter with Extended Power Factor Angle
Yuying Wu,Ning He,Dehong Xu 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
Grid inverter is required to generate reactive power to support the power system during grid faults to satisfy the grid code. Therefore the grid inverter should have the ability to operate with wide power factor range. In this paper, a Zero-Voltage-Switching Space Vector Modulation (ZVSSVM) scheme for three-phase ZVS grid inverter with extended power factor angle is proposed. With only one switching operation of the auxiliary switch during one switching period of SVM, ZVS of all switches can be achieved. Stage operations are analyzed and ZVS condition is derived. Finally the proposed ZVS-SVM method is verified by experiments.
Yuying Yang,Yadong Gong,Shuoshuo Qu,Bo Xin,Yunchao Xu,Yang Qi 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.12
316L stainless steel specimens were manufactured by additive/subtractive hybrid manufacturing (ASHM). The densification level, microstructure, microhardness and residual stress characterization in the different zones of the part were investigated. The density was determined by the Archimedes method, and the density measurement was divided into three regions, namely, the bottom, middle and top zones. The results show that the middle zone has a much smoother melting surface and that a relative density of nearly 100 % was achieved for the part in this study. The hardness profiles at room temperature, along the width and height directions of the cross-section of the top and bottom zones, were also studied. The residual stress was evaluated by X-ray diffraction (XRD) for the 316L SS specimen fabricated by the ASHM process, and it was compared with a specimen manufactured by the additive laser directed energy deposition (DED) process. The results show that the top and bottom zones exhibit tensile stress, and compressive stress occurs in the middle area. Moreover, the residual stress of ASHM shows a slightly smaller trend than that of the simplex DED due to the stress relaxation of the subsequent subtractive milling. These results may offer guidance for ASHM-fabricated 316L parts.
Yuying Tian,Tao Huang,Gerhard Litscher,Lu Wang,Guangjun Wang,Shuyong Jia,Yuqing Zhang,Weibo Zhang 사단법인약침학회 2011 Journal of Acupuncture & Meridian Studies Vol.4 No.3
Aim: To compare the difference of remote effects of acupuncture between metal needle and laser needle on facial blood perfusion (FBP). Methods: Hand acupuncture and laser-needle acupuncture were randomly used on Hegu (LI4)in 20 healthy volunteers. FBP was observed by speckle contrast imager before, during, and after the acupunctures. Results: For hand acupuncture there were gradual increases on the nose and left and right visor areas (p < 0.05 or p < 0.01) during the acupuncture and on an immediate increase (p < 0.01) that remained constant during the acupuncture on the forehead area but no significant increase on mouth area. During laser-needle acupuncture, on the other hand, there was a tendency of increase on the nose, left visor, and right visor areas but these were non significant. Conclusion: Hand acupuncture can influence FBP in remote places connected by meridians.