인터뷰 (p.307-328)

이연주,Michael D. Lee 아주대학교 법학연구소 2011 중소기업과 법 Vol.2 No.2

탄소 나노 물질의 형상에 따른 구리/탄소나노물질 하이브리드 필러의 전도성 향상 거동 분석

이연주,홍성욱,최현주,Lee, Yeonjoo,Hong, Sung-uk,Choi, Hyunjoo 한국분말야금학회 2018 한국분말재료학회지 (KPMI) Vol.25 No.5

In the present study, we develop a conductive copper/carbon nanomaterial additive and investigate the effects of the morphologies of the carbon nanomaterials on the conductivities of composites containing the additive. The conductive additive is prepared by mechanically milling copper powder with carbon nanomaterials, namely, multi-walled carbon nanotubes (MWCNTs) and/or few-layer graphene (FLG). During the milling process, the carbon nanomaterials are partially embedded in the surfaces of the copper powder, such that electrically conductive pathways are formed when the powder is used in an epoxy-based composite. The conductivities of the composites increase with the volume of the carbon nanomaterial. For a constant volume of carbon nanomaterial, the FLG is observed to provide more conducting pathways than the MWCNTs, although the optimum conductivity is obtained when a mixture of FLG and MWCNTs is used.

한국 소아 청소년 남아에서 복부 지방 분포 측정의 임상적 의의

이연주,김경모,오석희,박혜순,명준표,Lee, Yeoun-Joo,Kim, Kyung-Mo,Oh, Seak-Hee,Park, Hye-Soon,Myong, Jun-Pyo 대한소아소화기영양학회 2010 Pediatric gastroenterology, hepatology & nutrition Vol.13 No.2

목 적: 성인에서 내장 지방은 대사 이상의 위험 요소와 밀접한 상관이 있다고 알려져 있으나 소아 청소년 연령에서의 연구는 미흡하다. 소아 청소년에서의 복부지방의 분포와 대사 이상의 위험 요소간에 상관성을 연구하고자 하였다. 방 법: 78명의 남아와 23명의 여아를 포함한 101명의 소아 청소년(평균 연령 10.8${\pm}$2.4세)을 대상으로 연구를 시행하였다. 신체 계측과 대사 증후군의 위험 요소에 대한 분석을 개별 환자에서 시행하였고, 복부 전산화 단층 촬영을 통해 내장 지방과 피하 지방의 양을 측정하였다. 연령을 보정한 편 상관 분석을 통해 내장 지방, 피하 지방의 양, 신체 계측 지표와 대사 이상의 위험요소 간의 상관관계를 분석하였다. 결 과: 남아와 여아 모두에서 피하 지방이 나이가 들어감에 따라서 내장 지방보다 급격히 증가하는 것을 확인할 수 있었다. 남아에서 내장 지방과 피하 지방은 신체 계측 지표와는 유의한 상관성을 보였고, 내장 지방은 낮은 수치의 HDL-C과 피하 지방은 높은 이완기 혈압과 유의한 연관성을 보였으나. 남아에서 내장 지방과 피하 지방, 신체 계측 지표는 모두 대사 이상의 위험요소의 수와 밀접한 관계가 있는 것으로 나타났다. 결 론: 남아에서 내장 지방은 낮은 수치의 HDL-C과, 피하 지방은 높은 이완기 혈압과 유의한 상관성을 나타내었으나 성인에서의 기존 연구에 비해 본 연구는 다른 대사 이상의 위험 요소들에 대한 상관성이 떨어지는 것으로 나타났다. Purpose: Visceral adipose tissue may be strongly linked to increased metabolic risks in adults. However, because little is known regarding the effect of visceral adipose tissue in children and adolescents, we performed this study to determine the association between abdominal fat distribution and metabolic risk factors in this population. Methods: One hundred one children and adolescents (78 males and 23 females; mean age, 10.8${\pm}$2.4 years) were enrolled. The anthropometric data and metabolic risk factors were evaluated. Theabdominal fat distribution was assessed according to the CT measurement. Age-adjusted, partial correlations were performed among the visceral adipose fat area (VFA), subcutaneous adiposefat area (SFA), metabolic risk factors, and anthropometrics. Results: The SFA increased more rapidly than the VFA with advancing years in both genders. In males, the VFA and SFA were positively correlated with anthropometrics. The VFA was correlated with low HDL-cholesterol and the SFA was correlated with diastolic blood pressure (DBP). However, there was no statistical significance between the VFA, SFA, anthropometrics, and other metabolic risk factors. The VFA and SFA were strongly linked to a number of metabolic risk factors, such as other anthropometrics. Conclusion: This study investigated how a low HDL-C was correlated with VFA and how a high DBP was associated with SFA in Korean male children and adolescents. Our results suggest that the correlation between the VFA, SFA, and metabolic risk factors was relatively weak compared to that reported in previous adult studies.

신생아의 Flavobacterium indologenes 뇌막염 1례

이연주,김종현,고대균,강진한,김수영,윤수한,Lee, Yeon-Ju,Kim, Jong-Hyun,Koh, Dae-Kyun,Kang, Jin-Han,Kim, Soo-Young,Yoon, Soo-Han 대한소아감염학회 1998 Pediatric Infection and Vaccine Vol.5 No.2

Flavobacterium species are nonfastidious, oxidase-positive gram-negative rods that do not ferment glucose. These organism are widely distributed in nature and in hospital environments. In past, one of flavobacteria, Flavobacterium indologenes, was treated with non-pathogenic organism. Recently, several investigators have demonstrated the infection of this organism in human. Nowadays, the growth of F. indologenes in specimen should be considered a potential pathogen in infectious patients including neonate, especially in the setting of malignancy and with use of invasive procedures. The resistance of this organism to multiple antibiotics and the high incidence of polymicrobial bacteremia make it difficult to determine optimal therapeutic options. We experienced a case of neonatal bacterial meningitis causing by F. indologenes. So we report this case to evoke more concerns about the infections of this organism in human.

노심용융사고 시 관통노즐이 제거된 원자로용기 하부헤드의 구조 건전성 평가

이연주,김종민,김현민,이대희,정장규,Lee, Yun Joo,Kim, Jong Min,Kim, Hyun Min,Lee, Dae Hee,Chung, Chang Kyu 한국전산구조공학회 2014 한국전산구조공학회논문집 Vol.27 No.3

본 논문에서는 노심용융사고 시 관통노즐이 제거된 원자로용기 하부헤드의 구조 건전성 평가를 수행하였다. 열응력, 노심용융물의 질량 그리고 내압조건의 해석결과를 고려할 때, 하부헤드의 열응력에 의한 영향이 가장 크게 나타났다. 손상 가능성은 파손기준에 따라 평가하였으며, 등가소성변형률이 임계변형률 파손기준보다 낮은 수준으로 평가되었다. 열-구조물 연성해석 결과 하부헤드의 두께 중간층에서 항복강도보다 낮은 응력이 발생한 탄성영역 구간을 확인하였다. 내압이 커지면서 탄성영역 범위가 점차 좁아지면서 탄성영역이 내벽으로 이동하는 결과를 확인하였고, 노심용융사고 시 구조적 건전성을 만족하는 것으로 평가되었다. In this paper, structural integrity evaluation of reactor pressure vessel bottom head without penetration nozzles in core melting accident has been performed. Considering the analysis results of thermal load, weight of molten core debris and internal pressure, thermal load is the most significant factor in reactor vessel bottom head. The failure probability was evaluated according to the established failure criteria and the evaluation showed that the equivalent plastic strain results are lower than critical strain failure criteria. Thermal-structural coupled analyses show that the existence of elastic zone with a lower stress than yield strength is in the middle of bottom head thickness. As a result of analysis, the elastic zone became narrow and moved to the internal wall as the internal pressure increases, and it is evaluated that the structural integrity of reactor vessel is maintained under core melting accident.

소아 복막 투석 환자에서의 결막과 각막의 석회 침착 1례

이연주,임진아,이주훈,박영서,김명준,Lee, Yeoun-Joo,Lim, Gin-A,Lee, Joo-Hoo,Prak, Young-Seo,Kim, Myoung-Joon 대한소아신장학회 2008 Childhood kidney diseases Vol.12 No.2

Calcification in patients with endstage renal disease on renal replacement therapy can occur in extraskeletal area such as conjunctiva and cornea. Conjunctival and corneal calcification(CCC) has mostly has been reported in adults with endstage renal disease on hemodialysis. CCC seems to be associated with the duration of renal replacement therapy, and high Ca$\times$P value. We report a 10-year-old girl who was on peritoneal dialysis for 31 months and presented with CCC on both eyes. Her corneal calcification was resolved after the epithelial debridement and ethylenediaminetetraacetic acid(EDTA) soaking therapy. 말기 신부전으로 투석을 받는 환자의 결막과 각막에 골 외 석회 침착이 발생할 수 있다. 결막과 각막의 석회 침착은 대부분 장기간 혈액 투석을 받은 성인에서 보고되고 있으며, 신대체 요법의 기간, 높은 혈청 Ca$\times$P 등과 연관되는 것으로 알려져 있다. 저자들은 31개월째 복막 투석을 받고 있는 10세 여아에서 발생한 심한 결막과 각막의 석회 침착이 각막 주변부 상피세포 제거와 EDTA 투여로 호전된 경험을 하였기에 보고하는 바이다.

웹 검색에 의한 대사성질환 관련 체질의학산업 현황

이연주,김종열,Lee, Yeon-Joo,Kim, Jong-Yeol 사상체질의학회 2015 사상체질의학회지 Vol.27 No.4

Objectives To grasp the trend of constitution medical industry related to the metabolic disorders by analyzing the web resource.Methods Web search with the search formula ("constitutional" or "spirit") and ("Metabolic" or "diabetes" or "high blood pressure" or "hyperlipidemia" or "obesity") for 20 years (1995.09.10 ~ 2015.09.09.) in the web portal address "Web search with the search formula ("constitutional" or "spirit") and ("Metabolic" or "diabetes" or "high blood pressure" or "hyperlipidemia" or "obesity") for 20 years (1995.09.10 ~ 2015.09.09.) in the web portal address "<uri>http://web.search.naver.com</uri>".Results In the search area of news, blogs, cafes and knowledge-in, the number of searched pages retrieved by the word "constitution" was about 1.78 million. In the news 9760 cases of "obesity", 4046 cases of "hypertension" and 3253 cases of "diabetes" were searched. In Naver Web search Korean medicine clinics related to "constitution" were 24.3%. If we multiple 25.3% to 1000, the actual number of herbal hospitals, The constitution related to Korean medicine clinics is estimated to be approximately 3160 places. Among metabolic disorders, "Overweight", "Diabetes" and "Hypertension" were most frequently searched.Conclusions Constitutional industry related to metabolic diseases is very actively created on the internet in various areas. Among metabolic diseases, obesity, diabetes, hypertension were found with high frequency.

복와위 상태 중환자에서의 영양공급에 따른 임상적 예후 분석

이연주 ( Yeonju Lee ),김형숙 ( Hyung-sook Kim ),남궁형욱 ( Hyungwook Namgung ),이은숙 ( Eun Sook Lee ),김은경 ( Euni Lee ),조영재 ( Young-jae Cho ),이연주 ( Yeon Joo Lee ) 한국정맥경장영양학회 2018 한국정맥경장영양학회지 Vol.10 No.1

Purpose: Enteral nutrition is recommended in critically ill patients. On the other hand, the recommendation of nutritional support is limited and often controversial in critically ill patients in the prone position. Therefore, this study evaluated the clinical outcomes of nutritional support in critically ill patients in the prone position. Methods: A retrospective evaluation of the electronic medical records was conducted, including adult patients who were in the medical intensive care unit (ICU) in the prone position in Seoul National University Bundang Hospital from May 1, 2015 to June 30, 2017. The patients’ characteristics, nutritional support status while they were in the prone position, mortality in ICU and during hospitalization, ICU length of stay, mechanical ventilation days, and complications, such as ventilator associated pneumonia (VAP) and vomiting were collected. Results: In total, 100 patients were included. Of these, 12 received enteral nutrition and parenteral nutrition and 88 received only parenteral nutrition. The groups were similar in terms of age, sex, number of comorbidity, weight, PaO₂/FiO₂, hours of prone position, Simplified Acute Physiology Score II (SAPS II), Acute Physiologic and Chronic Health Evaluation II (APACHE II) score, and Sequential Organ Failure Assessment (SOFA) score. No differences were observed in ICU mortality (75.0% vs. 46.6%; P=0.065), hospital mortality (83.3% vs. 58.0%; P=0.081), ICU length of stay (22.2±14.6 vs. 18.2±21.2; P=0.128) and mechanical ventilation days (19.3±14.8 vs. 14.5±19.1; P=0.098). In addition, there were no differences in the possible complications of the prone position, such as VAP (8.3% vs. 4.5%; P=0.480) and vomiting (8.3% vs. 1.1%; P=0.227). Conclusion: No significant differences in the clinical outcomes were observed. Further studies will be needed to confirm the way of nutrition support while in the prone position.

동화활용 언어프로그램이 유아의 창의성 향상에 미치는 효과

이경화(Lee Kyunghwa),이연주(Lee Yeonju) 한국영재교육학회 2008 영재와 영재교육 Vol.7 No.1

  본 연구는 동화를 이용한 언어활동 프로그램이 유아의 창의성 향상에 미치는 효과를 확인함으로써, 유아의 창의성 향상을 위한 효과적인 교수프로그램 개발을 위한 자료로 제공하고자 하는데 목적이 있다. 따라서 본 연구에서는 동화활용 언어프로그램이 유아의 언어와 도형 영역에서의 창의성 향상에 효과적일 것이라는 가설을 설정하고 이를 검정하였다. 본 연구의 대상은 유아 12명으로, 이들을 무선 선발하여 실험집단과 통제집단에 각 6명씩 무선 배치한 후 사전검사를 실시하여 동질성을 확인하였다. 수업은 주 2회씩 총 12회에 걸쳐 실험을 실시하였다. 연구 결과, 동화활용 언어프로그램이 유아의 언어와 도형영역에서의 창의적 능력과 창의적 성격 향상에 효과적임이 확인되었다. 따라서 유아의 창의성을 계발시키고자 하는 수업에 본 연구에서 개발된 것과 같은 동화활용 언어프로그램을 적용한다면 유아교육현장에서 효과적으로 사용할 수 있을 것이다.   The objective of this study is to certify what effects language activity programs have on progress in children"s creativity. That is, this study aims at finding an effective teaching method for progress in creativity by clarifying whether telling fairy tales to children and making them participate in language activities have effects on the development of a rich imagination, curiosity, and creative ideas, and on the formation of creative personality.<BR>  The hypothesis of this study was that language activity programs using fairy tales would affect progress in children"s linguistic and creative abilities in a figural field and their creative personality.<BR>  A total of twelve 5-year-old children were randomly sampled and the respective six subjects were then classified into an experimental group which applied language activity programs using fairy tales and a control group where teachers mainly led language activities. These experiments were conducted twice every week for 6 weeks from March 23rd to April 27th, 2007, amounting to 12 sessions.<BR>  As instruments, "Integrated Creativity Test for Children" developed by Lee Kyung-hwa and Lee Shin-dong(2003) was used for both pre-and post- test. Then data was treated by SPSS WIN 12.0 to conduct the t-test.<BR>  The results of this study were summarized as the following:<BR>  First, children in the experimental group who participated in language activity programs using fairy tales increased their creative ability(linguistic creativity and figural creativity) more than the control group where the teacher led general language activities.<BR>  Second, children in the experimental group who participated in language activity programs using fairy tales showed progress in their linguistic creativity (imagination, fluency, and originality) more than the control group. That is, the language activity programs using fairy tales had positive effects on progress in linguistic creativity.<BR>  Third, children in the experimental group who participated in language activity programs using fairy tales showed progress in their figural creativity(continuity, connection, accomplishment, addition of new elements, themes, and nonhabituation) more than the control group. In other words, language activity programs using fairy tales had positive effects on progress in children"s figural creativity.<BR>  Fourth, children in the experimental group who participated in language activity programs using fairy tales improved their creative personality(curiosity, independence, adventurous spirit, and attachment to assignments) more than the control group. That is, the language activities programs using fairy tales had positive effects on progress in children"s creative personality.<BR>  In conclusion, it was verified that the language activity programs using fairy  tales had positive effects on the progress of the children"s creativity. Therefore, the program is expected to be used as a teaching method for a progress in children"s creativity in the field of early childhood education.

FUFU 와 함께 운동을

이원욱(Won Ouk Lee),이연주(Yeon Joo Lee),임동현(Dong Hyun Lim),최성호(Sung Ho Choi),이채원(Chae Won Lee),김현주(Hyun Ju Kim),원종서(Jong Seo Won),김현동(Hyun Dong Kim),국중진(Joong Jin Kook),이지항(Jee hang Lee),김진우(Jin Woo Kim) 한국HCI학회 2018 한국HCI학회 학술대회 Vol.2018 No.1

다양한 형태의 소셜 로봇들이 출시 되고 있다. 하지만 운동을 보조하는 로봇은 아직 비용적 문제와 여러 한계점으로 출시가 되지 않고 있다. 이에 본 연구는 실제 사용자들이 쉽게 사용할 수 있는 운동 로봇FUFU 를 시뮬레이터 단계부터 실제 로봇까지 개발하였다. 운동 맥락에 있어 집에서도 쌍방향 소통을 하여 실제 운동 성과를 얻게끔 개발하였다.