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Joo, H.W.,Lee, M.S.,Kim, S.W.,Kim, S.S.,Lee, J.Y.,Baek, J.Y.,You, C.-Y.,Lee, K.A.,Rhee, J.R.,Lee, S.S.,Hwang, D.G. IEEE 2006 IEEE transactions on magnetics Vol.42 No.10
The dependencies of the stack number N on perpendicular exchange-biasing (H<SUB>ex</SUB>) and coercivity H<SUB>c</SUB>) in [Pd/Co]<SUB>N</SUB> and [Pd/Co (or CoFe)]<SUB>N</SUB>/FeMn multilayers were investigated. With the help of the careful designs of layer structures, a series of samples whose surface anisotropies have the linear function N was prepared with constant bulk anisotropies. From the experimental data obtained, it was found that H<SUB>ex</SUB> does not depend on the surface anisotropy, while H<SUB>c</SUB> shows a strong dependence. Therefore, it is possible to tailor wide ranges of H<SUB>c</SUB> (300-600 Oe) without varying H<SUB>ex</SUB>(∼200 Oe) through the single control parameter stack number N.
여자 대학생의 저출산에 대한 인식 : 서울 지역 중심으로
김연주,김주예,김혜,민지유,박현영,이송,이혜심,주연진,최지희,함연화,강숙정,김부연,김윤정 이화여자대학교 간호과학대학 2019 이화간호학회지 Vol.- No.53
Purpose: The purpose of this study is to understand the perception of low birth rate within female college students. Methods: After obtaining approval from online community and several acquaintance, data were collected from August 10 to September 11. A total of eight students participated in the study. Semi-structured in-depth interview were conducted and the data subsequently analyzed. Results: This study extracted three themes: Fragmentary perception about low birth rate limited to social level problem; Avoidance about sacrifice from delivery and Lack of effectiveness in fertility incentives of present government. Conclusion: This study is meaningful that can explore the perception about low birth rates of female college students who are the subjects of future birth. They recognize low birth rates as a social problem, but do not recognize as individual problem. In addition, this study was able to identify the participants' perception of the low birth rate. It can be suggested as meaningful opinion for some follow-up study.
An outbreak of highly pathogenic H5N1 avian influenza in Korea, 2008
Kim, H.R.,Park, C.K.,Lee, Y.J.,Woo, G.H.,Lee, K.K.,Oem, J.K.,Kim, S.H.,Jean, Y.H.,Bae, Y.C.,Yoon, S.S.,Roh, I.S.,Jeong, O.M.,Kim, H.Y.,Choi, J.S.,Byun, J.W.,Song, Y.K.,Kwon, J.H.,Joo, Y.S. Elsevier Scientific Pub. Co 2010 Veterinary microbiology Vol.141 No.3
In spite of intensive surveillance programs for the control of HPAI, an outbreak of highly pathogenic avian influenza (HPAI) H5N1 in Korea in April 2008 caused serious damage to poultry farms, as did previous outbreaks in 2003/2004 and 2006/2007. Six viruses were selected from the Korean 2008 isolates for genetic analysis, and all eight gene segments from each of the influenza viruses were sequenced. A phylogenetic analysis showed that all of the viruses were of the same virus type and that the hemagglutinin (HA) gene was clustered with that of clade 2.3.2 viruses. However, the internal and neuraminidase (NA) genes were closely related to those of the clade 2.3.4 viruses (recent human and bird isolates from Southeast Asia).
Lee, Beom H.,Kim, Joo H.,Lee, Sun Y.,Jin, Hye Y.,Kim, Kwi‐,Joo,Lee, Jin‐,Joo,Park, Jung‐,Young,Kim, Gu‐,Hwan,Choi, Jin‐,Ho,Kim, Kyung M.,Yoo, Han‐,Wook Blackwell Publishing Ltd 2011 Liver International Vol.31 No.6
<P><B>Abstract</B></P><P><B>Introduction and aims: </B> Wide phenotypic and genotypic heterogeneities in Wilson's disease (WD) have been reported, hampering the study of their correlations. The goal of this study was to identify the factors related to these diversities.</P><P><B>Methods: </B> Clinical courses and molecular genetic characteristics were analysed in 237 unrelated Korean WD families. The average follow‐up period was 8.2 ± 5.8 years.</P><P><B>Results: </B> Presenting phenotypes were classified as H1 (12.2%), H2 (42.4%), N1 (21.6%), N2 (0.4%), NX (0.4%), presymptomatic (22.4%) and other (0.4%), modifying the guidelines by Ferenci and colleagues. Age at presentation was youngest and cirrhosis was rarest in the presymptomatic group. Decompensated cirrhosis was the highest in the H1 group. Favourable outcome was rarest in the N1 group. Forty‐seven (11 novel) <I>ATP7B</I> mutations were identified in 85% of the 474 alleles. Multiplex ligation‐dependent probe amplification assays in <I>ATP7B</I> and analyses of <I>ATOX1</I> and <I>COMMD1</I> genes identified no additional mutations. Yeast complementation assays demonstrated functional perturbation of the seven novel missense mutants. Five major mutations, p.Arg778Leu, p.Ala874Val, p.Asn1270Ser, p.Lys838SerfsX35 and p.Leu1083Phe, accounted for 63% of the alleles. H1 was more common, age at presentation was younger and N1+N2+NX tended to be less common in patients with nonsense, frame shifting or splicing mutations than in those with missense mutations alone. Patients with both mutations in the transduction (Td) or the ATP hinge domain showed presymptomatic or hepatic manifestations but no neurological manifestation.</P><P><B>Conclusions: </B> The presenting phenotype strongly affects the clinical outcome of WD, and is related to the <I>ATP7B</I> mutation type and location, providing an evidence for genotype–phenotype correlations in WD.</P>
Lee, E.K.,Kim, S.Y.,Noh, K.W.,Joo, E.H.,Zhao, B.,Kieff, E.,Kang, M.S. Elsevier/North-Holland 2014 ANTIVIRAL RESEARCH Vol.104 No.-
The replication and persistence of extra chromosomal Epstein-Barr virus (EBV) episome in latently infected cells are primarily dependent on the binding of EBV-encoded nuclear antigen 1 (EBNA1) to the cognate EBV oriP element. In continuation of the previous study, herein we characterized EBNA1 small molecule inhibitors (H20, H31) and their underlying inhibitory mechanisms. In silico docking analyses predicted that H20 fits into a pocket in the EBNA1 DNA binding domain (DBD). However, H20 did not significantly affect EBNA1 binding to its cognate sequence. A limited structure-relationship study of H20 identified a hydrophobic compound H31, as an EBNA1 inhibitor. An in vitro EBNA1 EMSA and in vivo EGFP-EBNA1 confocal microscopy analysis showed that H31 inhibited EBNA1-dependent oriP sequence-specific DNA binding activity, but not sequence-nonspecific chromosomal association. Consistent with this, H31 repressed the EBNA1-dependent transcription, replication, and persistence of an EBV oriP plasmid. Furthermore, H31 induced progressive loss of EBV episome. In addition, H31 selectively retarded the growth of EBV-infected LCL or Burkitt's lymphoma cells. These data indicate that H31 inhibition of EBNA1-dependent DNA binding decreases transcription from and persistence of EBV episome in EBV-infected cells. These new compounds might be useful probes for dissecting EBNA1 functions in vitro and in vivo.
주혁종,맹학영,최돈묵,진영학 忠南大學校 産業技術硏究所 1996 산업기술연구논문집 Vol.11 No.2
For the preparation of 4-directional carbon fiber reinforced carbon composites(4D CFRCs) which have good thermal stability and high mechanical properties under the high temperature, pressure impregnation, carbonization and graphitization processes were performed after fabrication of 4D preform using the pultruded rod and weaving method. Due to the good compactability of pitch matrix precursor and reinforcement, carbon matrix was infiltrated effectively into the pore and crack of 4D CFRCs during the densification process. Carbon yield of matrix pitch was high level by adapting of the pressure impregnation and carbonization process. Rod network type 4D preform was more easily densified than weaving type 4D preform.
Sampled-data H<sub>~</sub> fuzzy filtering for nonlinear systems with missing measurements
Koo, G.B.,Park, J.B.,Joo, Y.H. North-Holland ; Elsevier Science Ltd 2017 FUZZY SETS AND SYSTEMS Vol.316 No.-
<P>In this paper, a sampled-data H-infinity fuzzy filtering problem is considered for nonlinear systems with missing measurements. The nonlinear sampled-data system and missing measurements are assumed to be represented by a Takagi-Sugeno (T-S) fuzzy system and an independent, identically distributed Bernoulli random process, respectively. Based on the fuzzy system, the H-infinity fuzzy filtering problem is formulated to design the sampled-data fuzzy filter. By using the exponential mean-square stability definition, the stability condition with an H-infinity performance is guaranteed for the fuzzy system with the sampled-data fuzzy filter, and its sufficient condition is converted into the linear matrix inequality (LMI) format. Finally, an example is provided to verify the effectiveness of the proposed fuzzy filtering technique. (C) 2016 Elsevier B. V. All rights reserved.</P>