공정 개선에 따른 사고저항성 CrAl 코팅 피복관의 내마모성 향상

김성은,이영호,김대호,김현길,Kim, Sung Eun,Lee, Young-Ho,Kim, Dae Ho,Kim, Hyun-Gil 한국트라이볼로지학회 2022 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.38 No.4

This paper investigates the enhanced wear performance of a CrAl coated accident tolerant fuel (ATF) cladding. In the wake of the Fukushima accident, extensive research on ATF with respect to improving the oxidation resistance of cladding materials is ongoing. Since coated Zr claddings can be applied without major changes to the criteria for reactor core design, many researchers are studying coatings for claddings. To improve the quality of the CrAl coating layer, optimization of the manufacturing process is imperative. This study employs arc ion plating to obtain improved CrAl coated claddings using CrAl binary alloy targets through an improved coating method. Surface roughness and adhesion are improved, and droplets are reduced. Furthermore, the coated layer has a dense and fine microstructure. In scratch tests, all the tested CrAl coated claddings exhibit a superior resistance compared to the Zr cladding. In a fretting wear test, the wear volume of the CrAl coated claddings is smaller compared to the Zr cladding. Furthermore, the coated cladding manufactured through the improved process exhibits better wear resistance than other CrAl coated claddings. Based on these results, we suggest that fine microstructure is attributed to a mechanically and microstructurally robust CrAl coating layer, which enhances wear resistance.

월경전 불쾌기분장애 환자에서 증상과 기질과의 관련성

김성은,이정현,김덕만,박진균,기선완,김지웅,Kim, Sung-Eun,Lee, Jung-Hyun,Kim, Deok-Man,Park, Jin-Kyun,Ki, Seon-Wan,Kim, Ji-Woong 한국정신신체의학회 2006 정신신체의학 Vol.14 No.1

연구목적 : 본 연구는 월경전 불쾌기분장애와 기질 특성과의 관련성을 알아봄으로써 월경전 불쾌기분장애의 병태생리 및 관련된 성격 경향을 이해하며 치료 응용의 가능성을 제시해 보고자 하였다. 방법 : DSM-IV 진단기준에 의해 월경전 불쾌기분장애로 진단된 28명을 대상으로 한국어판 TPQ, 축약형 월경전기평가서 등을 작성케 한 후, 이들 사이의 상관관계를 구하였다. 결과 : 기질의 4가지 차원에 해당하는 점수를 독립 변인으로 하고, 축약형 월경전기평가서 점수를 종속 변인으로 하여 표준 중다회귀분석을 시행하였을 때 월경전 불쾌기분장애 증상은 Cloninger가 제시한 성격의 기질을 구성하는 4가지 요인 중 손해 회피(HA) 요인과 보상 의존(RD) 요인에 대하여 유의하였으며, 특히 손해 회피(HA) 요인에 의해 가장 많이 설명될 수 있는 것으로 나타났다. 결론: 월경전 불쾌기분장애의 증상은 높은 손해 회피(HA) 요인과 낮은 보상 의존(RD) 요인에 의해 잘 설명되었다. 월경전기증상 중 특히 정동 증상이 손해 회피(HA) 요인과 상관관계를 갖고 있는데, 이는 월경전 불쾌기분장애가 기질의 특성에 영향을 받음을 의미한다. 이는 향후 월경전 불쾌기분장애의 병태생리의 이해에 도움이 될 것으로 생각한다. Objectives: The study was intended to explore the relationships between temperament and premenstrual dysphoric disorder, to understand symptomatology of premenstrual dysphoric disorder and associated personality trait and to suggest therapeutic availability. Method : Twenty eight women, diagnosed as premenstrual dysphoric disorder by DSM-IV, were asked to complete the Korean version of Tridimensional Personality Questionnaire, and Shortened Premenstrual Assessment Form. The correlations between the severity of premenstrual symptoms and the scores of Tridimensional Personality Questionnaire were calculated. Results : The severity of symptoms of premenstrual dysphoric disorder was best explained by the harm-avoidance factor of the four dimensions of temperament. Conclusion : The symptoms of premenstrual dysphoric disorder are well explained by the harmavoidance factor and the reward-dependence factor of four dimensions of the temperament.

고지방식이(HFD)/stereptozotocin(STZ) 유도 당뇨모델에서 여주가 글루카곤 분비에 미치는 영향

김성은,김상백,김슬기,김현규,박병준,이학성,Kim, Seong-Eun,Kim, Sang-Back,Kim, Seul Ki,Kim, Hyun-Kyu,Park, Byoungjun,Lee, Hak Sung 한국환경과학회 2020 한국환경과학회지 Vol.29 No.8

In present study, we investigated the antidiabetic effect of Momordica charantia(as well known "bitter melon"). This study was conducted to determine antidiabetic mechanism of Bitter Melon Extract (BME). We measured blood glucose, insulin, glucagon level in a Sprague-Dawley rat model of high-fat diet/streptozotocin(HFD/STZ)-induced diabetes. Five experimental groups were used: normal, HFD/STZ, BME 62.5 mg/kg HFD/STZ, BME 125 mg/kg HFD/STZ and BME 250 mg/kg HFD/STZ. BME was orally administered to the rats every other day for 9 weeks. Results showed that fasting blood glucose levels were significantly lower in the BME 125 mg/kg(150.17 ± 20.22 mg/dL) and 250 mg/kg(124.17 ± 22.17 mg/dL) groups than in the vehicle group(188.83 ± 26.63 mg/dL)(p<0.05). In addition, glucagon levels were lower in the three BME treatment groups than in the vehicle group(p<0.05). Oral glucose tolerance tests revealed that the BME 250 mg/kg group had significantly(p<0.05) reduced 120-minute blood glucose levels and areas under the curve. Our results suggest that BME induces antidiabetic effects via the reduction of glucagon and blood glucose levels.

신생아 로타바이러스 감염 진단에서 효소면역법과 중합효소연쇄반응과의 비교

김성은,김미옥,박선영,정원조,마상혁,김윤정,김선주,Kim, Sung Eun,Kim, Mi Ok,Park, Sun Young,Jung, Won Jo,Ma, Sang Hyeok,Kim, Yun Jung,Kim, Sun Ju 대한소아감염학회 2000 Pediatric Infection and Vaccine Vol.7 No.1

Purpose : Rotavirus is a most common etiologic agent of pediatric gastroenteritis. The standard method to diagnose rotavirus infection was the detection of viral particles in specimens through electron microscopy. But it was complex. Enzyme immunoassay and latex agglutinin are preferred because they are relatively handy, inexpensive and take a short time, in comparison with electron microscopy. However, several reports have shown that the use of ELISA to diagnose rotavirus infection in neonates can result in false positive reactions. The main purpose of this study is to compare ELISA and RT-PCR in the diagnosis of neonatal rotavirus infection. Methods : Data presented in this study were obtained form 123 newborn babies in the nursery of the Fatima Hospital, Masan, Korea, form Jury to December, 1997. We obtained two samples of stool from each of the newborn babies and then performed the Rotazyme test and the RT-PCR. In the Rotazyme test, the results were interpreted according to visual findings. The samples were used for the RT-PCR test after at stock $-30^{\circ}C$ to identify rotavirus group A. The result of the two tests were compared. Results : The informations are divided into 73 males and females. Out of the total informations 15 were transferred from other hospitals. Their average gestational age was $38.5{\pm}1.6$ weeks. The average birth weight was $3134.8{\pm}539gm$. In the Rotazyme test, 75 samples turned out to be positive. Out of them, 55 samples(75.3%) were positive and 18 samples(24.7%) were negative in the RT-PCR. On the other hand, in the Rotazyme test, 50 samples turned out be negative. Out of them, 27 samples(54%) were positive and 23 samples(46%) were negative in the RT-PCR. Conclusion : Rotavirus infection in uncommon in neonates. The diagnosis based on visual findings using Rotazyme test has a disadvantage in the sense that it can result in false positive reactions and false negative reactions in the diagnosis of neonatal rotavirus infection.

일제시기 김활란의 여권의식과 여성교육론

김성은(Kim Sung-Eun) 부산경남사학회 2011 역사와 경계 Vol.79 No.-

김활란은 여권문제의 원인을 여성의 교육권과 재산권 부재에서 그원인을 찾았다. 여권향상을 위해 김활란이 할 수 있는 일은 여성교육이었다. 김활란의 남녀관은 가정과 사회에서 여성과 남성이 동반자이자 동업자, 동등한 협력관계라고 보았다. 김활란은 가정에서 남녀동등은 주부의 역할과 기여를 인정하고 여성이 직업과 경제력을 가지고 결혼비용을 분담하는데서 시작된다고 보았다. 이러한 의미에서 여성의 직업은 남녀동등한 가정을 준비하는 단계였다. 나아가 김활란은 여성들에게 결혼을 얽매이지 말고 사회에 진출하여 이제까지 남성의 영역으로 간주되었던 직업들에 과감히 도전할 것을 촉구했다. 한편 사회가 여성에게 남성과 동등한 교육과 취업의 기회를 줌으로써 여성이 능력을 발휘할 수 있도록 해야 한다고 촉구했다. 김활란은 특히 가정부인이 소비자가 아니라 생산자라는 점을 강조했다. 따라서 가사, 직업, 부업을 하는 생산자로서 여성의 위상 정립이 중요하다고 보았다. 또한 주부가 사회의식을 가지고 가사의 합리화를 통해 확보한 시간과 노력을 활용하여 사회봉사에 나설 것을 촉구했다. 김활란은 여권운동의 첫걸음이 문맹퇴치운동이며 여성일반의 지위향상을 위해서는 여성의 고등교육뿐 아니라 보통교육이 확산되어야 한다고 생각했다 따라서 교육을 받은 신여성이 여성의 지위 향상을 위해 여성의 문맹타파에 나서야 한다고 촉구했다. 특히 신여성 주부가 사회봉사로써 농촌계봉과 문맹퇴치에 나서야 한다고 촉구했다. 문맹퇴치는 단순히 한글보급뿐 아니라 상식과 지식계발, 사회의식의 고취를 포함한 것이었다. 김활란은 신여성들이 지도자의식을 가지고 여성의 문맹퇴치에 힘써야 한다고 강조했다. 여성교육담당자로서 김활란은 여성고등교육의 유용성에 대한 회의, 현모양처 교육 논란, 실생활과 괴리된 교육내용 학생풍기문제와 사치문제에 대한 비판여론에 대응하며 여성교육의 문제점을 점검하고 방향을 모색해야 했다. 미국유학에도 불구하고 김활란은 한국인으로서 조선적인 실생활교육을 지향하며 조선화된 이화, 조선의 이화를 만들고자 했다. 이를 위해 한국인의 힘으로 재단법인 설립, 재정 자립, 학교 경영을 하길 원했다. 또한 여자종합대학교 설립을 목표로 기존의 문과, 음악과, 가사과, 보육과 이외에 상과, 농촌사업과, 사회사업과, 의과, 체육과의 학과 증설을 계획했다. 이 학과들은 당시 우리 민족에게 절실히 필요했던 분야인 동시에 여성의 직업과 사회활동, 봉사활동에 도움이 되는 분야였다. 김활란은 여성고등교육만 강조한 것이 아니라 문맹퇴치와 농촌계몽, 보통교육의 대중화 역시 강조했다. 여성고등교육에 있어서도 조선의 사회현실과 실생활을 고려하여 실제 가정생활과 사회운동에 필요한 교육이 되도록 끊임없이 노력했다. This is about Hellen Kim’s consciousness of women’s rights and view of Korean women’s education. Hellen Kim was one of the greatest educator in modern Korea. She had dedicated herself to Korean women’s education and elevation. She had maintained equal rights for both sexes and equality of both sexes. So She had thought Korean women of being have rights for education and profession. She had encouraged Korean women to have profession and had revaluated housewives’ housework. She had thought elementary education need to spread and higher education need to grow for elevating Korean women’s status. So she maintained educated Korean women have to sense of duty to serve her sisterhood to teach Korean literacy and common sense. She had tried to solve probloms of women’s education like good wife and wise mother education or Korean practical life education.

위암 선별검사 현황

김성은,Sung Eun Kim 대한소화기암연구학회 2016 Journal of digestive cancer reports Vol.4 No.2

Gastric cancer is the fifth most common malignancy in the world and still remains the third and fifth leading cause of cancer death in male and female, respectively. In terms of the cancer survival, the survival of gastric cancer is low in the West with showed 5-year survival rates of 10-30%, whereas the survival rates in Asia is more than 50%. The reason of the higher survival rate from gastric cancer in Asia partially related with the availability of gastric cancer screening programs, however, the population-based screening for gastric cancer has been conducted just in Korea and Japan. Therefore, more effective method for detecting the gastric cancer is needed for countries without a population-based gastric cancer screening. Endoscopy is the most effective method for diagnosis of gastric cancer however, it requires a large infrastructure including a large number of endoscopic equipment and well-trained endoscopists. To overcome these problems, several noninvasive methods (such as serologic markers, biomarkers, cancer autoantibodies, and exhaled breath analysis) for diagnosis of gastric cancer screening are suggested. This review addresses the conventional methods and the emerging methods for gastric cancer screening.

회원작품 - 안산어린이집

김성은,Kim, Sung-Eun 대한건축사협회 1998 建築士 Vol.1998 No.7

Stage 3 플러스 징후를 동반한 미숙아 망막병증에서 일차 유리체강내 베바시주맙 주입술의 효과

김성은,임형택,이승규,Sung Eun Kim,Tyler Hyung Taek Rim,Christopher Seungkyu Lee 대한안과학회 2015 대한안과학회지 Vol.56 No.1

Purpose: To evaluate the efficacy and safety of primary intravitreal bevacizumab injection in stage 3 retinopathy of prematurity with plus signs. Methods: We reviewed retrospectively the medical records of 30 eyes of 16 patients diagnosed with stage 3 retinopathy of prematurity with plus signs treated with primary intravitreal bevacizumab injection between March 1, 2011 and February 28, 2013 and followed up for at least 9 months. Results: Mean gestational age was 26 + 4 weeks ± 11 days and mean birth weight was 822 ± 251.4 g. The locations of disease were zone II in 24 eyes and zone III in 6 eyes. Intravitreal bevacizumab injection was performed after the mean 1.3 ± 1 day after plus signs were detected. Mean postconceptional age at treatment was 38 + 2 weeks ± 16 days. Mean follow-up period was 16.6 ± 6.9 months. Plus signs started to regress after the mean 4.6 ± 2.3 days after injection and completely regressed after the mean 24.3 ± 12.4 days. Cataract extraction was performed in 1 eye due to a cataract that appeared not associated with the injection procedure, but was regarded as a treatment failure. There were no local or systemic complications. Conclusions: Primary intravitreal bevacizumab injection in stage 3 retinopathy of prematurity with plus signs demonstrated excellent short-term efficacy and safety. J Korean Ophthalmol Soc 2015;56(1):62-69

복합보의 내력성능에 관한 연구 -정착판의 설치에 의한 거동의 차이-

김성은,Kim, Seong Eun 한국강구조학회 2000 韓國鋼構造學會 論文集 Vol.12 No.6

최근, 장스팬 구조물이 많이 요구되어지고 있다. 그로인하여 지진하중 및 풍하중에 의한 바닥의 진동방지 및 과대변형을 억제하기 위하여 강성을 증대시킬 필요가 있다. 이러한 목적으로, 철골의 단부를 철근콘크리트로 보강하는 것이 효과적이다. 이러한 유효 보강 방법을 실현하기 위해서는 철골 부분과 철골 단부를 철근콘크리트로 보강한 부분 사이의 경계부에서 원활한 응력전달이 이루어져야 한다. 따라서 원활한 응력전달을 위하여 그 경계부에 정착판을 설치하였다. 본 연구는 기존 실험을 기초로 한 수치해석을 통하여 유효 응력 전달 방법을 평가한 것이다. Recently, a long span is often required for the spacious building. Therefore the increase of stiffness is necessary to prevent floor vibration and control deformation of the building under earthquake and wind loads. For this purpose, steel beams with stiffened ends by reinforced concrete are effective. To realize such an effective reinforcement method, the smoothening of bending and shear stress transmission at the boundaries between middle-part of the steel beam and both end-parts of the steel beam with stiffened ends by reinforced concrete is required. Therefore, the fixed plate was installed at the boundary with the view of transferring the stress smoothly. This paper evaluates the method of effective transmission of bending and shear stress through the numerical analysis that is based on advanced experimental tests.

인간의 행동 인식을 위한 얼굴 방향과 손 동작 해석

김성은,조강현,전희성,최원호,박경섭,Kim, Seong-Eun,Jo, Gang-Hyeon,Jeon, Hui-Seong,Choe, Won-Ho,Park, Gyeong-Seop 제어로봇시스템학회 2001 제어·로봇·시스템학회 논문지 Vol.7 No.4

In this paper, we describe methods that analyze a human gesture. A human interface(HI) system for analyzing gesture extracts the head and hand regions after taking image sequence of and operators continuous behavior using CCD cameras. As gestures are accomplished with operators head and hands motion, we extract the head and hand regions to analyze gestures and calculate geometrical information of extracted skin regions. The analysis of head motion is possible by obtaining the face direction. We assume that head is ellipsoid with 3D coordinates to locate the face features likes eyes, nose and mouth on its surface. If was know the center of feature points, the angle of the center in the ellipsoid is the direction of the face. The hand region obtained from preprocessing is able to include hands as well as arms. For extracting only the hand region from preprocessing, we should find the wrist line to divide the hand and arm regions. After distinguishing the hand region by the wrist line, we model the hand region as an ellipse for the analysis of hand data. Also, the finger part is represented as a long and narrow shape. We extract hand information such as size, position, and shape.