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Kim, M.C.,Lee, J.S.,Kwon, Y.M.,O, E.,Lee, Y.J.,Choi, J.G.,Wang, B.Z.,Compans, R.W.,Kang, S.M. Elsevier/North-Holland 2013 Antiviral research Vol.99 No.3
The influenza M2 ectodomain (M2e) is poorly immunogenic and has some amino acid changes among isolates from different host species. We expressed a tandem repeat construct of heterologous M2e sequences (M2e5x) derived from human, swine, and avian origin influenza A viruses on virus-like particles (M2e5x VLPs) in a membrane-anchored form. Immunization of mice with M2e5x VLPs induced protective antibodies cross-reactive to antigenically different influenza A viruses and conferred cross protection. Anti-M2e antibodies induced by heterologous M2e5x VLPs showed a wider range of cross reactivity to influenza A viruses at higher levels than those by live virus infection, homologous M2e VLPs, or M2e monoclonal antibody 14C2. Fc receptors were found to be important for mediating protection by immune sera from M2e5x VLP vaccination. The present study provides evidence that heterologous recombinant M2e5x VLPs can be more effective in inducing protective M2e immunity than natural virus infection and further supports an approach for developing an effective universal influenza vaccine.
Graphene/M<sub>x</sub>WO<sub>3</sub> (M=Na, K) nanohybrids with excellent electrical properties
Liu, B.,Yin, S.,Wu, X.,Wang, Y.,Huang, Y.,Wu, J.,Sekino, T.,Matsushita, J.,Lee, S.W.,Kobayashi, M.,Kakihana, M.,Sato, T. Pergamon Press ; Elsevier Science Ltd 2015 Carbon Vol.94 No.-
Graphene/M<SUB>x</SUB>WO<SUB>3</SUB> (M=Na, K) nanocomposites with different weight ratios were successfully synthesized using MBH<SUB>4</SUB> as a reducing agent in aqueous solution, followed by crystallization of amorphous precursors under calcination in H<SUB>2</SUB> (5vol.%)/N<SUB>2</SUB> atmosphere at 600<SUP>o</SUP>C. The coupled samples showed good shielding properties in NIR wavelength range together with certain visible lights transparency. The as-prepared tungsten bronze nanoparticles are homogeneously anchored on graphene sheets, and the graphene/tungsten bronze nanocomposite showed an enhanced electrical conductivity with good shielding properties in the NIR range together with certain visible lights transparency. With the increment of graphene amount in the composites, the contact between the graphene sheets was enhanced, and the M<SUB>x</SUB>WO<SUB>3</SUB> might enhance the charge transport properties of graphene by generating the short conductive path for electrons over the remained oxygenated functional groups. The synergistic effects could be observed in the composites. When 5wt.% or more graphene were composed into M<SUB>x</SUB>WO<SUB>3</SUB>, the hybrid composite showed the higher electrical conductivity than those of uncoupled graphene and tungsten bronze alone.
간호대학생의 이론・실습 성적과 임상수행능력의 관련성 : 성인간호학 교과목을 중심으로
권현진,김다영,김민정,김소현,박예담,박지원,왕서현,유영주,이재현,주가은,신수진 이화여자대학교간호학회 2020 이화간호학회지 Vol.- No.54
Purpose: This study aimed to explore the relationship among score of theory course, score of practicum course and clinical practice ability by the course, Adult Health Nursing. Methods: A descriptive research was conducted using questionaries. Data were collected from September 25 to October 2, 2019. Participants were 67 nursing students at one university in Seoul on their junior year who have experienced clinical settings. The collected data were analyzed by t-test, ANOVA, Cohen’s Kappa, and Scheffe’s test using SPSS 25.0 version program. Results: Participants were given a quartile number from 1 to 4 respectively according to their scores of theory course those of practicum course. The total mean score of clinical practice ability was 3.61, with a perfect score of 5. The scores of theory course and practicum course showed slight correlation(Cohen’s Kappa=.168). However, significant correlation did not existed among score of theory course, score of practicum course and clinical practice ability. Conclusion: The result showed that score of theory course, score of practicum course and clinical practice ability have no significant correlation. However, its finding suggests the necessity of further research about various approach and new evaluation methods needed in order to improve nursing students’ competency.
Wang, Y.,Yuk, H.J.,Kim, J.Y.,Kim, D.W.,Song, Y.H.,Tan, X.F.,Curtis-Long, M.J.,Park, K.H. Pergamon Press 2016 Bioorganic & medicinal chemistry letters Vol.26 No.2
Protein tyrosine phosphatase 1B (PTP1B) is an important target to treat obesity and diabetes due to its key roles in insulin and leptin signaling. The MeOH extracts of the root bark of Flemingia philippinensis yielded eight inhibitory molecules (1-8) capable of targeting PTP1B. Three of them were identified to be novel compounds, philippin A (1), philippin B (2), and philippin C (3) which have a rare 3-phenylpropanoyl chromenedione skeleton. The other compounds (4-8) were known prenylated isoflavones. All compounds (1-8) inhibited PTP1B in a dose dependent manner with IC<SUB>50</SUB>s ranging between 2.4 and 29.4μM. The most potent compound emerged to be prenylated isoflavone 5 (IC<SUB>50</SUB>=2.4μM). In kinetic studies, chromenedione derivatives (1-3) emerged to be reversible, competitive inhibitors, whereas prenylated isoflavones (5-8) were noncompetitive inhibitors.
Wang J.J.,Deng Q.J.,He Y.Y.,Feng Y.N.,Kang M.P.,Duan X.L.,Yang Y.L. 한국물리학회 2022 Current Applied Physics Vol.39 No.-
CCTO (Calcium copper titanate) powder as inorganic filler was synthesized by the Sol-gel method firstly. CCTO/ PVDF (Polyvinylidene fluoride) composite was fabricated by solution mixing based on high temperature resistance of PVDF and insulated property of CCTO. The composite of CCTO/PVDF were characterized by X-ray diffraction, Fourier Transform infrared spectroscopy, Scanning Electron Microscope and impedance analysis. The results showed that the addition of CCTO and increasing in its content did not affect the phase- and microstructure of the composites,but the increase of CCTO content can induce the generation of C–F new bonds. PVDF/CCTO composites were enhanced in performance of thermal and frequency-depended stability with increasing in the fraction of CCTO. The dielectric constant of CCTO/PVDF composite materials with 50% CCTO achieved to a maximum value of 50 almost, which is 5 times higher the pure PVDF. The conductivity felled into 10-8 to 10-1 S m-1 during the frequency of 102–108 Hz. The composite material would be expected to be applied in the field of integrated circuit.
Ground-based Parallax Confirmed by<i>Spitzer</i>: Binary Microlensing Event MOA-2015-BLG-020
Wang, Tianshu,Zhu, Wei,Mao, Shude,Bond, I. A.,Gould, A.,Udalski, A.,Sumi, T.,Bozza, V.,Ranc, C.,Cassan, A.,Yee, J. C.,Han, C.,Abe, F.,Asakura, Y.,Barry, R.,Bennett, D. P.,Bhattacharya, A.,Donachie, M. American Astronomical Society 2017 The Astrophysical journal Vol.845 No.2
<P>We present the analysis of the binary gravitational microlensing event MOA-2015-BLG-020. The event has a fairly long timescale (similar to 63 days) and thus the light curve deviates significantly from the lensing model that is based on the rectilinear lens-source relative motion. This enables us to measure the microlensing parallax through the annual parallax effect. The microlensing parallax parameters constrained by the ground-based data are confirmed by the Spitzer observations through the satellite parallax method. By additionally measuring the angular Einstein radius from the analysis of the resolved caustic crossing, the physical parameters of the lens are determined. It is found that the binary lens is composed of two dwarf stars with masses M-1= 0.606 +/- 0.028M(circle dot) and M-2= 0.125 +/- 0.006 M-circle dot in the Galactic disk. Assuming that the source star is at the same distance as the bulge red clump stars, we find the lens is at a distance D-L = 2.44 +/- 0.10 kpc. We also provide a summary and short discussion of all of the published microlensing events in which the annual parallax effect is confirmed by other independent observations.</P>
대학생의 외모에 대한 사회문화적 태도, 외모 스트레스와 섭식장애의 관계
김민지,박민정,박예진,안슬기,왕소여,이소정,이지수,정은기,하효정,김건희 이화여자대학교간호학회 2020 이화간호학회지 Vol.- No.54
Purpose: The purpose of this study is to verify the relationship between sociocultural attitudes towards appearance, appearance stress and eating disorders. Method: Sociocultural Attitudes Towards Appearance Questionnaire-4 revised which was translated to Korean measured sociocultural attitudes towards appearance and appearance stress measurement examined appearance stress. Korean Version of Eating Attitude Test-26 was used to measure eating disorders. 120 university students in a city took surveys from September 20 to October 8, 2019. Of the 120 questionnaires, 4 has insincere or incomplete responses and 116 questionnaires resulted in data. The questionnaires were investigated using statistical process of t-test, ANOVA, and Pearson's correlation coefficients using SPSS/Win 25.0 software package. Results: The average of KEAT-26 scores was 7.45 and the prevalence of eating disorders was 6.89% in the study. In eating disorders, there were significant differences according to subjective body image and diet experience. Eating disorders were positively correlated to sociocultural attitudes towards appearance (r=.21, p=.018) and appearance stress (r=.23, p=.006). Conclusion: This study verified the relationship between sociocultural attitudes towards appearance, appearance stress and eating disorders of university students, and expected to be supporting documents to develop programs for helping university students with eating disorders.
의학 비의학 전공 학생들의 Social Communication Network 분석 : 소집단 활동별 성분 측정
김수연,김혜숙,왕영미,정미라,조미형,황승옥 이화여자대학교 의과대학 1979 梨花醫學誌 Vol.- No.11
This study analyzed the Social Communication Network between medical students and non-medical students. The aim of this study is to help medical students to be better equipped to overcome hardship by understanding other students' relations. The results may be summurized as follows. (1) Opinion Leader. Non-medical students group had more opinion leaders on the part of Friends and Study than medical students group. Therefore, We could find that non-medical students group was more sociable and its association group work was stronger than medical students group But there was little difference in the part of Fashion. (2) Isolation As the result from investigating the ratio of students whose communication matrix were zero, we came to find that the ratio of medical students group was higher than that of nonmedical students group. So, medical students were more selfish and isolated particularly in the part of Fashion and Study there were wide difference. (3) Connectedness By the study of connectedness index, we found that non-medical students group's cohesiveness was very strong. (4) Integrativeness Intergrativeness index of non-medical students group was also high. In other words, medical students were more selfish and poor in forming group It was proved that there was evident difference in Social Communication Network between medical students group and non-medical students group, regarding to each of parts.