고온 원자로용 Mod. 9Cr-1Mo강 후판재의 깊이에 따른 미세조직 및 기계적 특성 변화

이선희,박상규,김민철,이봉상,김선진,Lee, Sun-Hee,Park, Sang-Gyu,Kim, Min-Chul,Lee, Bong-Sang,Kim, Sun-Jin 한국압력기기공학회 2011 한국압력기기공학회 논문집 Vol.7 No.2

The purpose of this study is to investigate the effects of through thickness on the mechanical properties and microstructural features in Mod. 9Cr-1Mo steels for RPVs. The microstructures at all locations were typically tempered martensite, but small amount of delta ferrite was observed at the center region. The prior austenite grain size increased with the depth from the surface. The yield strengths of center and 1/4T location were higher than that of surface by 30MPa. The impact toughness of center was low compared to those of other specimens. Also, upper shelf energy was low at the center. The toughness deterioration in center might be caused by larger size of the prior austenite grains and existence of the delta ferrite.

Na₂Se₂을 이용한 대칭적인 다이아릴 다이셀레늄 화합물의 One-Pot 합성방법

이선희,김샛별,박명숙,Lee, Sun-Hee,Kim, Saet-Byeul,Park, Myung-Sook 대한화학회 2011 대한화학회지 Vol.55 No.3

커피전문점의 시각이미지요소가 소비자 선호도에 미치는 영향

이선희,우나리야,Lee, Sun Hee,Woo, Nariyah 한국벤처창업학회 2015 벤처창업연구 Vol.10 No.3

소비자들이 커피전문점을 선택 방문 하는 가장 중요한 요인 중 하나는 시각적 요인이다. 커피전문점 선호도에 대한 분석 결과, 직업, 거주지, 결혼여부와 같은 응답자의 일반적 특성에 따라서 유의적인 차이가 나타났으며, 모든 일반적 특성 범주에서 스타벅스의 선호도가 가장 높은 것으로 나타났다. 커피전문점 매장 내 색체의 영향에 대한 분석 결과에서는 모든 일반적 특성 변수에서 통계적으로 유의한 차이가 나타나지 않았다. 또한 시각적인 상징컬러가 가장 영향을 주는 아이템은, 제공용품과 실내 인테리어가 중요한 아이템으로 조사되었다. 시각적인 상징컬러만으로 커피전문점을 선택 한다면 가장 기억에 남거나 방문하고 싶은 곳은 스타벅스였으며, 응답자의 일반적 특성에 따라서 차이가 나타난 변수는 평균용돈이었다. 시각적 상징컬러가 강하여, 선택된 커피전문점으로써 가장 기억에 남거나 방문하고 싶은 곳으로서 스타벅스, 엔젤리너스, 카페베네이었으며, 이디야가 색상이 그 커피전문점의 특성을 잘 나타내고 있어서'이었고, 할리스는 다른 곳과 비교해서 색상이 개성이 있어서로 조사되었다. 즉 본 연구에서는 커피전문점마다 커피 맛은 다르지만, 소비자들이 커피전문점을 방문할 때 시각적 요소의 중요도와 상징컬러의 선호도가 커피전문점의 선택에 중요한 영향을 미치는 것으로 분석되었다. 일반 소비자를 대상으로 조사하여 시각적 요소들이 어떠한 영향을 미치는지 알아보는 연구를 진행하였으며, 시각적 요소와 컬러마케팅이 중요한 요소임을 인식하여 발전시킬 필요가 있는 것으로 파악되었다. One of the most important factors for the consumers to select a coffee shop is a visual factor. The analysis results of interior pale face image of the coffee house doesn't show significant differences on all the categories. It is recognized that the items affected by symbolized color are supplies and interior design. If a respondent choose a coffee house by the symbolized color, 'Starbucks' is the most memorable or want to visit place, and only one category, pocket money shows significant difference in choosing coffee houses. The investigation results say that the most memorable or want to visit coffee house by the visual icon color are 'Starbucks', 'Angelinus' and 'Caffebene', and that 'Ediya's icon color marks the characteristics of the shop very well, and 'Hollys' has the most characterful color. Resultingly, visual elements and icon colors of the shop seriously affect consumer's choice in visiting a coffee house. This study is to understand the influence of visual elements in choosing a coffee house for general customers, and it is considered that the importance of visual elements and color marketing must be recognized and developed.

동결보존이 생쥐 난소 조직 내 Heat Shock Protein 90의 발현에 미치는 영향

이선희,박용석,염혜원,송견지,한상철,배인하,Lee, Sun-Hee,Park, Yong-Seog,Yeum, Hye-Won,Song, Gyun-Jee,Han, Sang-Chul,Bae, In-Ha 대한생식의학회 2002 Clinical and Experimental Reproductive Medicine Vol.29 No.1

Objective : Heat shock protein family is related to protective mechanism of cells by environmental changes. This study was performed to evaluate the effect of cryopreservation on the heat shock protein 90 (Hsp90) expression in mouse ovarian tissue. Methods : Cryopreservation of mouse ovarian tissue was carried out by slow freezing method. The mRNA level of Hsp90 expression in both fresh and cryopreserved mouse ovarian tissue was analyzed by RT-PCR. The protein expression of Hsp90 was evaluated by Western blot analysis and immunohistochemistry. Results: The mRNA and protein of Hsp90 were expressed in both fresh and cryopreserved mouse ovarian tissue. The amount of Hsp90 mRNA was increased in cryopreserved ovarian tissue after 60 and 90 minutes after thawing and incubation. The amount of Hsp90 protein was increased in the cryopreserved ovarian tissue after 6 hours of the incubation in Western blot analysis. In immunohistochemical study, Hsp90 protein was localized in cytoplasm of oocytes and granulosa cells. Significant level of immunoreactive Hsp90 protein was detected in theca cells contrast to the weak expression in ovarian epithelial cells. Conclusion: This results showed the increase of Hsp90 expression in both mRNA and protein level in the cryopreserved mouse ovarian tissue. It can be suggested that Hsp90 may play a role in the protective or recovery mechanism against the cell damage during cryopreservaion.

탄소 나노섬유/PVDF-HFP 복합재로 코팅된 실크 직물의 물성

이선희,Lee, Sun-Hee 한국섬유공학회 2012 한국섬유공학회지 Vol.49 No.2

Silk fabrics were coated with carbon nano fibers (CNFs)/poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) composite solution by the knife edge method. The various contents of CNFs/PVDF-HFP coated silk fabrics were investigated through their morphological, mechanical, and electrical properties. In the results regarding surface morphology, it was shown that the CNFs were evenly distributed in coated silk fabrics through SEM images; the existence of CNFs in coated silk fabrics was confirmed. For the results regarding the mechanical properties, the tensile linearity and compression linearity improved as CNFs contents increased. Also, the electrical properties of CNFs/PVDF-HFP coated silk fabrics increased with 4% CNFs contents. Therefore, the results confirm the ability of conductive textiles by using CNFs/PVDF-HFP composite-coated silk fabrics.

일부 질환들에서 진료량-진료비, 재원일수와의 관계에 대한 연구

이선희,좌용권,Lee, Sun-Hee,Jwa, Yong-Gweon 대한예방의학회 1994 Journal of Preventive Medicine and Public Health Vol.27 No.4

Investigating the existence of volume-outcome relationships for specific disease groups relates directly to the policy issue of whether, and how, specific inpatient services should be regionalized. This study examined whether medical costs and lengths of stay as outcomes were affected by changes in volume within hospitals. Based on the claims data obtained from National Federation of Medical Associations, each six disease categories from medical and surgical conditions were selected and 29,720 cases from 1,266 hospitals were analyzed. Main findings of the research can be summarized as follows: 1. Analyzing volume and cost per case relationship, tonsillectomy class 1, hernia procedure class 0, appendectomy and cesarean section class 0,1 in surgical conditions showed negative relationship significantly. In cases of medical conditions, costs per case in respiratory neoplasm class 2, COPD class 1, 2, digestive malignancy were also related to volume negtively. 2. Comparing volume with length of stay per case, lens procedure class 0, hernia procedure class 0, appendectomy class 0,1, cesarean section class 1 in surgical conditions showed negative relationships significantly. In medical conditions, volume of respiratory neoplasm class 2, COPD class 1,2, digestive malignancy class 0 were associated with negatively. 3. Within same disease categories, changes in cost and length of stay per case to volume were more remarkable in severe cases. These results suggested a significant inverse relationship between disease cases and cost, length of stay per case as outcome variables.

간호대학생의 기관절개관 관리에 대한 지식, 술기 및 지각된 수행정도와의 관계

이선희,김순희,Lee, Sun Hee,Kim, Soon Hee 한국데이터정보과학회 2016 한국데이터정보과학회지 Vol.27 No.2

본 연구는 졸업학년 간호대학생의 지식, 간호술기, 지각된 수행 정도를 알아보기 위해 시행되었다. 핵심간호술기 checklist와 질문지를 이용하여 D광역시 졸업학년 간호대학생 90명을 대상으로 2014년 9월 4일부터 2014년 9월 22일까지 시행하였고, SPSS/WIN 23.0을 이용하여 기술분석, 상관관계분석을 하였다. 연구결과 손 씻기 지식은 간호술기, 지각된 수행 정도와 정적 상관관계가 있는 것으로 나타났으며 간호술기에서 손 씻기가 가장 취약한 것으로 나타났다. 그리고 가장 수행이 잘 되는 항목은 [내관을 과산화수소수 용액 (과산화수소수: 생리식염수=1:2)에 담가놓는다]로 멸균제품과 환자로부터 오염된 제품을 제거하는 부분인 것으로 조사되었다. 따라서 멸균과 손 씻기 등의 감염에 대한 지식이 행위로 이어지도록 구체적 동기와 인지를 유발하는 경험적 학습이 요구된다. This study was to search the relationship among knowledge, nursing skill, perceived performance in graduating nursing class. The participants were 90 members of to graduating nursing class in D city. Data were collected from September 4, 2014 to September 22, 2014 using a questionnaire and core nursing skills checklists. Data analysis was done with SPSS/WIN 23.0 using descriptive statistics and Pearson correlation. It found that knowledge of hand washing had a positive correlation between the nursing skill and perceived performance. The most vulnerablenursing skill was hand washing. The best nursing skill was sterilization and withdrawing contaminated products from the patient (Place the inner tube immersed in a solution of hydrogen peroxide). Based on the findings of this study, activating prior knowledge needs to be stressed. Thus, it would be necessary to include more effective motivation in designing experiential education program for cognitive performance.

고속 방사된 폴리부틸렌 테레프탈레이트 섬유의 미세구조 형성과 물성

이선희,조현혹,Lee Sun Hee,Cho Hyun Hok 한국섬유공학회 2004 한국섬유공학회지 Vol.41 No.6

The effect of take-up velocity on the fine structure and properties of PBT fibers are investigated using WAXD, density, birefringence, DSC, dynamic viscoelasticity, TMA, tensile test, etc. An increase in take-up velocity caused an increase in both the density and the birefringence. In the results of WAXD equatorial profiles, the increase in the take-up velocities resulted in the formation of (010) and (100) reflections of $\beta-crystal$ and the reflection peak became sharper at the take-up velocity of 6 km/min. The initial modulus of the fiber increased when the g' fraction increased, the tenacity depended more on fractions of $\alpha-crystal$, i.e. the total crystallinity. The thermal properties of high speed spun PBT fibers were measured with DSC, dynamic viscoelasticity, TMA, etc. Endothermic curves became sharper with increasing take-up velocities, and endothermic melting peaks are shifted to high temperatures. Therefore, crystal structure was well developed in the fiber obtained at high take-up velocities. The $tan\delta$ peak is shifted and the intensity is decreased with temperature. That is, the packing density of the PBT fiber is high when the take-up velocity and orientation of amorphous region is increased. The shrinkage has a tendency to decrease with increasing take-up velocity.

한국의사의 정부신뢰 관련 요인 분석: 의사단체들의 일부 임원의사들을 중심으로

이선희,양건모,서주현,김주혜,Lee, Sun-Hee,Yang, Gun-Mo,Seo, Ju-Hyun,Kim, Ju-Hye 대한예방의학회 2010 Journal of Preventive Medicine and Public Health Vol.43 No.5

Objectives: This study aims to investigate the factors related to Korean physicians' trust in the government. Methods: We used structured questionnaires that were composed of multidimensional scales for each of the various categories. Results: The recognition levels of trust of the government by Korean physicians were not high, and they ranged from 3.6 to 4.8 for ten scales. The factors related to trust in the government were categorized into seven factors on the basis of a factor analysis. On the regression analysis, a positive relationship was found between "the individual propensity to trust" and trust in the government, while a negative relationship was found between "the recognition level regarding the government as an authoritarian power" and trust in the government. "Confidence about participation in the policy process" as internal efficacy and "belief in governmental ability and motivation toward public demand" as external efficacy also showed a strong positive relationship with trust in the government. Conclusions: From these results, we can draw the conclusion that making efforts to improve the recognition level of trust in the government among physicians is an important policy task. To increase the trust level, participation of physicians in the policy process in various ways and open communication between the physicians' associations and the government should be facilitated.

Fine Structure and Physical Properties of Poly(butylene terephthalate) Films Prepared by Biaxial Drawing Method

이선희,조현혹,Lee, Sun-Hee,Nakayama, Kazuo,Cho, Hyun-Hok The Korean Fiber Society 2007 한국섬유공학회지 Vol.44 No.6

The purpose of this study is to determine a structural explanation for the improved ability of PBT for biaxial orientation at the temperature range of $100{\sim}180^{\circ}C$. In order to investigate the crystal structure and orientation, PBT films with biaxial and uniaxial stretching are examined using WAXD, MOA, etc. Thermal properties are confirmed by DMTA, DSC and mechanical properties are investigated using sonic propagation method and tensile tester. In WAXD results, original PBT films exhibit only ${\alpha}$-form crystallites, while biaxially stretched films show (100) of the ${\alpha}$-crystal phase with increased stretching temperatures. In MOA patterns, original and biaxially stretched PBT films show an isotropic pattern in the film plane. The planarity of the film increases with simultaneous transverse stretching and stretching temperature.