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- 저자 : Jing Xu (검색결과 533 건)
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Investment Climate Analysis of China and South Korea: Based on Grading Method
Jing LI(Jing LI),Xin Yu XU(Xin Yu XU),Jie XU(Jie XU),Shuai SU(Shuai SU),Fan ZHANG(Fan ZHANG) 한국4차산업학회 2022 4차산업연구 Vol.2 No.2
Purpose - This study analyzes the investment environment of South Korea by using the rating scale of Robert B Stobaugh, Jr, and draws conclusion implication. Research design, data, and methodology - The study conducted a survey on according to the political stability, capital repatriation, foreign ownership allowed, discrimination and controls, foreign vs domestic businesses, currency stability, willingness to grant tariff protection, availability of local capital, and annual inflation for last 5 years. The score of these eight aspects will be given based on the current situation in South Korea and the sum of the scores will be calculated. Result - China-Korea economic and trade relations are in a stage of transformation and upgrading, and the level of economic and trade cooperation in various fields is reaching a new level. It is hoped that Chinese enterprises will grasp business opportunities, strengthen research and analysis of the Korea market and achieve mutually beneficial cooperation. Conclusion - The investment environment of South Korea is superior according to the political stability, capital repatriation, foreign ownership allowed, discrimination and controls, foreign vs domestic businesses, currency stability, willingness to grant tariff protection, availability of local capital, and annual inflation for last 5 years.
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Jing Xu,Guodong Liu,Jiadi Lian,Jing Ni,Jing Xiao 한국물리학회 2018 Current Applied Physics Vol.18 No.11
In this paper, forced vibration was used to regulate the droplet migration, fully recording the transient migration of droplets on a micro-textured substrate under the resonance frequency by a high-speed camera. The influence of resonance frequency and dynamic migration characteristics of droplets on the solid micro-texture surface under lateral vibration were researched. The experiment demonstrates that the driving force is caused by the difference between the left and right contact angles made the droplet oscillate and migrate, and as time t increases, the left and right contact points are periodically shifted and the amplitude of migration increases. Therefore, based on the droplet migration behavior and its force balance mechanism, a spring vibration model of migration behavior of the vibrating droplet micro unit was set up to predict the complete trajectory of its migration on a solid surface. The calculation results show that the theoretical displacement is less than the experimental displacement, and the longer the time, the larger the difference. Affected by the vibration, part of the droplet permeates through the micro-texture, resulting in the droplet losing height and the contact angle becoming smaller as well. While the other part of droplet overcomes the internal surface tension to migrate.
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Endothelial Progenitor Cells’ Classification and Application in Neurological Diseases
Jing-jing Yuan,Jing Yang,Shi-lei Sun,Rui Zhang,Yu-ming Xu 한국조직공학과 재생의학회 2017 조직공학과 재생의학 Vol.14 No.4
The therapeutic effects of endothelial progenitor cells (EPCs) on ischemic stroke have been extensively studied in recent years. However, the differences in early EPCs and endothelial outgrowth cells (EOCs) are still unclear. Clarifications of their respective properties and specific functioning characteristics contribute to better applications of EPCs in ischemic diseases. In this review, we discuss cellular origin, isolation, culture, surface markers of early EPCs and EOCs and relevant applications in neurological diseases. We conclude that EOCs possess all characteristics of true endothelial progenitors and have potent advantages in EPC-based therapies for ischemic diseases. A number of preclinical and clinical applications of EPCs in neurological diseases are under study. More studies are needed to determine the specific characteristics of EPCs and the relevant mechanisms of EPCs for neurological diseases.
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Jing Xu 고려대학교 민족문화연구원 2019 Cross-Currents Vol.0 No.33
This article brings to light a unique set of field notes on Taiwanese children’s life collected by anthropologist Arthur P. Wolf (1958–1960). Designed as an improved replication of the classic Six Cultures Study of Child Socialization, Wolf’s study was the first anthropological and mixed-methods research on ethnic Chinese children, marking a historically significant moment when Sinological anthropology first intersected with the anthropology of childhood. Based on a subset of Wolf’s standardized interviews with seventy-nine children (ages 3–10), this article focuses on children’s narratives about peer aggression. They distinguish serious forms of aggression from milder ones in perceived negativity, and they react differentially; these perceptions and reactions reflect important concerns and strategies in local socio-moral life, some of which diverge from adult ideologies. These findings highlight the role of children as active moral agents. Through analyzing children’s voices of peer aggression, this article illuminates a dark side of moral development that would otherwise remain obscured in the historical literature of childhood: the mischievous, naughty, and even violent interactions among children. The article reveals the tensions and conflicts in children’s interactions underlying the Chinese cultural value he, or social harmony. It also reveals a complex spectrum of reciprocity in children’s understandings and adds an important theme, “negative reciprocity”––defined as responding to a negative action with a negative action—to the recent advocacy in anthropology for taking children seriously in understanding human morality.
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Antiinflammatory Constituents from the Roots of Smilax bockii warb.
Xu Jing,Li Xian,Zhang Peng,Li Zhan-Lin,Wang Yi The Pharmaceutical Society of Korea 2005 Archives of Pharmacal Research Vol.28 No.4
From $70\%$ ethanol extract of the roots of Smilax bockii warb., seven flavonoids, kaempferol (1), $kaempferol-7-O-\beta-D-glucopyranoside$ (2), quercetin (3), isorhamnetin (4), (+)-dihydrokaempferol (5), engeletin (6), isoengeletin (7), and $n-butyl-\beta-D-fructopyranoside$ (8), caffeic acid n-butyl ester (9) were isolated and identified by means of chemical and spectroscopic. Compounds 2, 4, and 6-9 were isolated for the first time from the roots of S. bockii and compounds 2, 8, and 9 were firstly isolated from the genus Smilax. In addition, using the SEAP (Secreted alkaline phosphatase) assay system, we investigated the in vitro anti-inflammatory activity of the $70\%$ ethanol extract of the roots of S. bockii, which showed moderate activity in inhibiting $TNF-\alpha-induced NF-{\kappa}B$ activation with an $IC_{50}$ value of $166.6 {\mu}g/mL$.
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Antiinflammatory Constituents from the Roots of Smilax bockii warb.
Jing Xu,Xian Li,Peng Zhang,Zhan-Lin Li,Yi Wang 대한약학회 2005 Archives of Pharmacal Research Vol.28 No.4
From 70% ethanol extract of the roots of Smilax bockii warb., seven flavonoids, kaempferol (1), kaempferol-7-O-β-D-glucopyranoside (2), quercetin (3), isorhamnetin (4), (+)-dihydrokaempferol (5), engeletin (6), isoengeletin (7), and n-butyl-β-D-fructopyranoside (8), caffeic acid n-butyl ester (9) were isolated and identified by means of chemical and spectroscopic. Compounds 2, 4, and 6-9 were isolated for the first time from the roots of S. bockii and compounds 2, 8, and 9 were firstly isolated from the genus Smilax. In addition, using the SEAP (Secreted alkaline phosphatase) assay system, we investigated the in vitro anti-inflammatory activity of the 70% ethanol extract of the roots of S. bockii, which showed moderate activity in inhibiting TNF-α-induced NF-κB activation with an IC50 value of 166.6 µg/mL.
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