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Kim, J. H.,Yang, Y. M.,Ji, C. J.,Ryu, S. H.,Won, Y. B.,Ju, S. Y.,Kwon, Y.,Lee, Y. E.,Youn, H.,Lee, J. W. MICROBIOLOGICAL SOCIETY OF KOREA 2017 JOURNAL OF MICROBIOLOGY -SEOUL- Vol. No.
<P>PerR, a member of Fur family protein, is a metal-dependent H2O2 sensing transcription factor that regulates genes involved in peroxide stress response. Industrially important bacterium Bacillus licheniformis contains three PerR-like proteins (PerR(BL), PerR2, and PerR3) compared to its close relative Bacillus subtilis. Interestingly, unlike other bacteria including B. subtilis, no authentic perR (BL) null mutant could be established for B. licheniformis. Thus, we constructed a conditional perR (BL) mutant using a xylose-inducible promoter, and investigated the genes under the control of PerR(BL). PerR(BL) regulon genes include katA, mrgA, ahpC, pfeT, hemA, fur, and perR as observed for PerR(BS). However, there is some variation in the expression levels of fur and hemA genes between B. subtilis and B. licheniformis in the derepressed state. Furthermore, katA, mrgA, and ahpC are strongly induced, whereas the others are only weakly or not induced by H2O2 treatment. In contrast to the B. subtilis perR null mutant which frequently gives rise to large colony phenotype mainly due to the loss of katA, the suppressors of B. licheniformis perR mutant, which can form colonies on LB agar, were all catalase-positive. Instead, many of the suppressors showed increased levels of siderophore production, suggesting that the suppressor mutation is linked to the fur gene. Consistent with this, perR fur double mutant could grow on LB agar without Fe supplementation, whereas perR katA double mutant could only grow on LB agar with Fe supplementation. Taken together, our data suggest that in B. licheniformis, despite the similarity in PerR(BL) and PerR(BS) regulon genes, perR is an essential gene required for growth and that the inability of perR null mutant to grow is mainly due to elevated expression of Fur.</P>
강수연,김수연,도혜진,이혜선,전소현,전혜실,주원진,지윤정,진소희,이자형,정덕유,유소연 이화여자대학교 간호과학대학 2009 이화간호학회지 Vol.- No.43
In this study, we investigated how much job-satisfaction and self leadership nurses have. And making use of self leadership, we hope to enhance job- satisfaction and develop nurse organization. To find out the relationship between nurse's self leadership and Job-satisfaction, we carried out a sample survey : The subjects of our study are 150 nurses being in offices(hospitals) at the two university hospitals and three general hospitals in Seoul or Keong-gi province. Nurses agreed with and understood the purpose of our study. For analyzing the result, we used ANOVA of SPSS 14.0. The main results of our study are as follows : According to characteristic of subjects, level of self leadership has a meaningful difference statistically according to marriage, religion, department career, position. As for the marriage, the level of self leadership of the married are higher((F=19.95, p= .000) than the unmarried. . Level of self leadership perceived by subjects is an average 3.50 point. An average points of each factors are as follows : Self-compensation is 3.75 point, rehearsal is 3.57 point, self-expectation is 3.55 point, goal-setting is 3.53 point, self-criticism is 3.31 point, constructive thinking is 3.27 point. The total average is 62.9 point to 90 full marks. Level of self job-satisfaction perceived by subjects is an average 2.98 point to 5 full marks. Level of self job-satisfaction perceived by subjects is an average 2.98 point to 5 full marks. An average points of each factors are as follows : Interrelation is 3.42 point, interrelation between doctors and nurses is 3.35 point, job demand is 3.10 point, administration is 3.02 point, a professional position is 2.94 point, self control is 2.84 point, payment is 2.44 point. A coefficient of co-relation of self leadership and self job-satisfaction is .406 point, a meaning probability is .000 point and they seem to have a close interrelation. Rehearsal among factors of self leadership has the most interrelation with payment of self job-satisfaction. A professional position of self job-satisfaction has the most interrelation with self expectation(r= .314, p= .000). A job demand has the most interrelation with constructive thinking(r= .272, p= .001). A interaction has the most interrelation with self expectation(r= .272. p= .000). A administration has the most interrelation with constructive thinking(r= .411, p= .000). An interrelation between doctors and nurses has the most interrelation with self expectation(r= .385, p= .000). Our study shows there is a close relation between self leadership and job-satisfaction. Especially, self expectation and constructive thinking, the factor of self leadership, appear to affect the nurse's job-satisfaction. It appears that nurses feel to have a intensive job-satisfaction, having positive self leadership, a sense of purpose, and constructive thought. Thus, we need to steadily study self leadership, self control, and internal motivation as a new paradigm focused on self-control and internal motivation for their self-developments and advancement of nurses' organizations.
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.
기원전 5세기의 보령군 평라리 출토의 유리구슬에 대하여
최주,이융조,정동찬,홍현선,윤용현,김수철,송종한,변종홍 한국전통과학기술학회 1996 한국전통과학기술학회지 Vol.3 No.1
A dark blue glass bead covered with a thick white weathered layer was unearthed from a grave at Pyoungra-ri, Boryoung-gun, Choongcheong Province in 1995. The grave was dated to be at least around the 5th century BC as determined by other archaeological artifacts accompanied. This dating indicates that they bead is the earliest glass item excavated so far in the Korean Peninsula and as old as the earliest Chinese glass artifacts. The glass bead is 17.4 mm in diameter and 15.:3 mm high with a bore of 2mm. Chemical composition at the dark blue broken surface was analyzed by Rutherford Back Scattering(RBS) method using 2MV Tandem-type accelerator, and found to be 77.7% Si0₂. 11.5% K₂O, 2.4 CaO, 3.6%, Al₂O₃ 0.4% MgO, 1.3%, MnO, 0.6% Fe₂O₃. 0.8% CuO, and 1.7 PbO. Small amount of lead oxide in the bead is unique: because lead oxide is hardly observed in such a potash glass from other countries of this period. Furtherniore, the lead isotope ratio indicates that the raw materials are originated from the southern part of Korea. The remains, where prehistorical beads made of jades or glasses are being excavated, were concentrated in the area that Pyoungra-ri is located and the native culture of this area was highly developed at the period of around 5th century BC. These facts is do not exclude the possibility that the local discovery of the Pyoungra-ri glass bead may be a local invention.
Finite element analysis of optimized brace angle for the diagrid structural system
Lee, Y.,Oh, J.,Abdu, H. H.,Ju, Y. K. Springer Science + Business Media 2016 International Journal of Steel Structures Vol.16 No.4
<P>The Diagrid structural system is considered to be the best structural system for constructing free form structures, but it is also a very effective system for resisting lateral load. As a newly investigated structural system, its complicated node has not yet been completely investigated, and only minimal experimentation with the manufacturing and construction of the system has been conducted. Therefore, the construction cost of the diagrid structural system is still comparatively high. In this study, the cyclic performance of a diagrid node with an H-section brace is discussed with an emphasis on the welding methods, overlapped length, and diagrid angle. Details considering productivity were proposed, and their structural performance was assessed through experimental and analytical investigation.</P>