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劉陶陶 ( Liu Taotao ) 사단법인 아시아문화학술원 2020 인문사회 21 Vol.11 No.2
2020年2月19日起,韩国“新冠肺炎”突然性大爆发,造成韩国国民一度恐慌,韩国两大主流媒体也对此事件进行了多项报道,但是,由于韩国属于多党制国家,各大媒体也分别代表了不同政党的立场,因此报道的方向各有所异。本论文以韩国具有代表性的两大媒体《朝鲜日报》和《韩民族日报》为研究对象,以疫情爆发初的一周为时间节点,从各个角度、各个层次对两大媒体报道内容进行分析,比较两大媒体报道的异同点及问题点,以期探求韩国媒体的报道对韩国国内的影响以及对未来中韩两国关系发展的影响。 The pandemic of coronavirus disease 2019 (COVID-19) in South Korea suddenly broke out since 20 January, 2020, it caused national panic in South Korea and drew massive media attention from the two major Korean medias. But due to the multi-party system of South Korea, the various medias represent different positions of different political parties, so their direction of reporting varies. This paper takes South Korea’s two major representative media, Chosun Daily News and Hankyoreh Daily News as the research objects, and analyzes the content of the two major media reports from different angles and levels from the first week of the Coronavirus outbreak. This paper compares the similarities and difference of the two major media reports, aiming to find the impact of Korean media reports on Korea and the future development of the relations between China and South Korea.
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Wu Hao,Liu Hongchun,Liu Haining,Chen Yanjie,Liu Taotao,Shen Xizhong,Liu Lili 한국유전학회 2022 Genes & Genomics Vol.44 No.5
Background: Differential diagnosis of Crohn's disease (CD) and intestinal tuberculosis (ITB) is still difficult in clinical pratice. DNA methylation has been considered as a favorable area for biomarker exploration and identification. Objective: The purpose of the current study was to evaluate DNA methylation changes between CD and ITB. Methods: We performed a genome-wide association study to identify differentially methylated positions (DMPs), including 8 CD patients (before the initial of biologics or immunomodulators), 6 ITB patients, and 8 healthy controls (HCs), in whole blood DNA using the Infinium HumanMethylation850 BeadChip. Results: Patients in the CD group and ITB group were all observed with hypo-methylated changes compared with HCs. However, the CD group overlaps with the ITB group in DNA methylation, suggesting a stable epigenetic profile between the two diseases. The pathway enrichment analysis showed the alternation in inflammation-related pathway, immune system, and signal transduction. Focused on the DMPs located in the promoter region, further analysis indicated hypermethylation of cg03122532 (5'UTR of KCNJ15) could be a potential CD-specific biomarker. Conclusions: We identified specific differential methylation loci related to CD and ITB in blood DNA. DNA metylation as a important epigenetic modification could contribute to the pathogenesis study and biomarker exploration of the diseases.
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Microfluidic step emulsification techniques based on spontaneous transformation mechanism: A review
Ziwei Liu,Cong Duan,Shaokun Jiang,Chunying Zhu,Youguang Ma,Taotao Fu 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.92 No.-
Rapid and robust generation of uniformly sized droplets is a research hotspot for emulsificationtechnology. Compared with conventional microfluidic devices such as cross-junction andflow-focusing,the size of the droplets generated in the step emulsifiers based on the spontaneous transformationmechanism is independent of theflowfluctuation, making this type of devices have many advantagesand important application value. To introduce the research progress of step emulsification technology inrecent years, this review discusses the device configurations, interfacial evolution for droplet formationmechanism,flow pattern classification, the influence of control variables on the emulsification processand the application advantages of such devices, and illustrates the design and selection principles of suchdevices, the control laws of manipulation variables, and the future applicationfields and directions.
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Comparison of formation of bubbles and droplets in step-emulsification microfluidic devices
Wei Zhang,Ziwei Liu,Shaokun Jiang,Chunying Zhu,Youguang Ma,Taotao Fu 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.106 No.-
Monodispersed microbubbles and microdroplets are widely used as reaction carriers in microfluidics. Inthis study, the generation processes of bubbles and droplets in a step-emulsification microfluidic deviceare compared to show the similarities and differences in the emulsification process. By changing theplacement of the microdevice, the effects of buoyancy and gravity on the generation of bubbles and dropletsare introduced, and the feedback mechanism of the bubble layer and the effect of droplet accumulationon the emulsification process are clarified. Finally, based on the analysis of the difference of thepinch-off of the dispersed phase between the bubble and the droplet in this configuration, the Plateau-Rayleigh instability processes for the formation of bubble and droplet are revealed by using a highspeedcamera system, and the reasons for the difference of the operating ranges of the gas flow rateand liquid flow rate in the dripping flow regime are explained.
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Qiliang Wang,Qi Yu,Junsong Liu,Taotao Ai,Hongdong Li 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2015 NANO Vol.10 No.6
Zinc oxide (ZnO) nanorods (NRs) have been synthesized as a template to fabricate TiO2 nanotubes (TiNTs) on hemispherical diamond film by liquid-phase deposition (LPD) method. The process concerning the formation of TiNTs was analyzed. Based on the results of XRD and Raman spectroscopy, it is demonstrated that TiNTs was successfully obtained after removing ZnO NRs by chemical etching at room temperature. The TiNTs on hemispherical diamond film show higher performance photocatalysis, examined by the degradation of the reactive yellow 15(RY15) solution. The corresponding mechanism is discussed.
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Guanghao Chen,Guoyu Wang,Biao Huang,Changli Hu,Taotao Liu 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.3
We investigated the influence of interphase interaction on unsteady sheet/cloud cavitating flows around a 2D hydrofoil numerically. Inthe computations, the homogeneous (without the consideration of interphase interaction) and inhomogeneous (with the consideration ofinterphase interaction) multiphase flow models are used, respectively. The inhomogeneous model assumes that both phases co-exist atevery point in the flow field and each phase is governed by its own set of conservation laws. The exchanges of mass, interphase dragforce and momentum transfer induced by interphase mass transfer are treated explicitly as transfer terms. The results show that the distributionsof interphase drag force and momentum transfer induced by mass transfer are highly related with the velocity difference of twophases and interphase mass transfer rate, respectively. Without the consideration of interphase interaction, the over-prediction of turbulenteddy viscosity in the rear of attached cavity causes the reentrant jet to lose its momentum and becomes too weak to cut across thecavity sheet. However, when considering the interphase interaction, the predicted turbulent kinetic energy in the rear of attached cavitycan be reduced considerably; thus, turbulent eddy viscosity drops significantly in this region, and the reentrant jet becomes much stronger,so typical cloud cavitation shedding occurs. Compared with those predicted without the consideration of interphase interaction, a betteragreement with experimental results concerning the time evolution of cavity shape, time-averaged lift/drag coefficient, frequency andmean u-velocity profiles is obtained with the consideration of interphase interaction.
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