흡ㆍ배기 밸브의 밀착이상이 엔진연소특성에 미치는 영향

손성만(Sung Man Son),박경석(Kyoung Suk Park) Korean Society for Precision Engineering 2005 한국정밀공학회지 Vol.22 No.3

실내기 전력사용량에 따른 실내온도 분포에 관한 수치적 연구

손용진(Yong Jin Son),박성현(Sung Huyn Park),하만영(Man Yeong Ha) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12

교량에 설치된 도시가스배관의 안전관리에 관한 연구

손상근(Sang-Geun Son),이수경(Su-Kyung Lee),윤영만(Young-Man Yun),최도균(Do-Kyun Choi) 한국가스학회 2016 한국가스학회 학술대회논문집 Vol.2016 No.11

DFR 측정 기반 산업단지 부하모델링 구현 연구

손서은(SeoEun Son),이수형(Soo-Hyung LEE),박정욱(Jung-Wook Park),송경빈(Kyung-Bin Song),이성무(Sung-Moo Lee),조종만(Jong-Man Jo) 대한전기학회 2011 대한전기학회 학술대회 논문집 Vol.2011 No.7

친환경 세라믹 고분자 수지 모르타르의 주차장 표면 마감의 재료적 특성에 관한 실험적 연구

손종만 ( Son Jung Man ),최은규 ( Choi Jun Kyu ),이신춘 ( Lee Sin Chun ),곽규성 ( Kwak Kyu Sung ),오상근 ( Oh Sang-keun ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.2

Recently, the parking lot supplied and enlarged. Even though the social problem on the lack of parking lot space increased gradually, the factor of environment, construction and structure which is connected directly to safety for finishing materials of parking lot. Therefore, new concept for finishing materials of parking lot to solve these problem very need. On investigation as yet, I could find the effect by environment and safety factor through the study on the Performance of a high molecular ceramic resin mortar finishing materials for parking lot. And the performance is satisfied with KS as proper method to keep long term safety. In summary, I consider that specification and quality control for the finishing materials of parking lot need to use in the job site.

월정사 단기출가 프로그램 참여 연구 : 일반인을 중심으로

손강숙 ( Shon Kang Suk ),조재성 ( Cho Jae Sung(Ji Il) ),정소미 ( Jeong So Mi ) 한국명상심리상담학회 2021 명상심리상담 Vol.26 No.-

본 연구는 중년기 위기를 경험하고 내·외적 변화에 처한 사람들의 단기출가 경험에 대해 탐색하는 것을 목적으로 하였다. 연구문제는 다음과 같다. 첫째, 중년의 단기출가의 동기는 무엇인가?, 둘째, 중년의 단기출가경험을 통한 변화 요인은 무엇인가?, 셋째, 단기출가를 통한 변화경험을 현재 일상생활에서 어떻게 활용하고 있는가?였다. 이를 위하여 단기출가 경험이 있는 40대~60대 중년 12명을 대상으로 반구조화된 인터뷰를 실시하고 합의에 의한 질적 분석의 방법으로 분석하였다. 연구의 결과는 다음과 같다. 첫째, 중년의 단기출가 동기를 살펴본 결과, 인지적인 측면과 정서적인 측면의 2개 영역이 도출되었다. 인지적인 측면 영역에서 ‘나는 누구인가?’라는 실존에 대한 질문, ‘나’라는 사람에 대한 객관적인 인식 2개 범주가 도출되었다. 둘째, 단기출가 경험이 자신을 변화하게 한 요인이 무엇이었는지를 탐색한 결과, 자기를 경험, 진정성을 경험의 2개 영역이 도출되었다. 자기를 경험 영역에서 ‘나’를 만난시간, ‘나’에 대한 반성과 성찰 2개 범주가 도출되었다. 진정성을 경험 영역에서 부처님을 닮고 싶은 마음, 스님을 닮고 싶은 마음, 도반을 닮고 싶은 마음 3개 범주가 도출되었다. 셋째, 단기출가 경험이 현재 일상생활에서 어떻게 활용되고 있는지를 탐색한 결과, 앞으로 삶의 새로운 방향 발견, 사회 환경과의 관계 변화의 2개 영역이 도출되었다. 본 연구를 통해서 도출된 결과는 추후 중년을 대상으로 한 단기출가 프로그램을 구성함에 있어서 고려해야 할 사항들에 대한 기초자료를 제공할 수 있을 것으로 기대한다. The purpose of this study was to explore the short-term export experience of people who experienced the middle-aged crisis and faced internal and external changes. For this purpose, semi-structured interviews were conducted with 12 middle-aged people in their 40s and 60s who had the Short-term Entering the Buddhist Priesthood experience and analyzed by a consensual qualitative analysis method. The results of the study are as follows. First, as a result of examining the motives for the Short-term Entering the Buddhist Priesthood among middle-aged people, two domains, cognitive and emotional, were derived. In the cognitive aspect, two categories were derived: the question of existence, ‘Who am I? and ‘objective awareness of ‘me’. Second, as a result of examining the factors that caused the short-term homework experience to change, two domains were derived: 'experience self and experience authenticity'. In the domain of 'experience self', two categories were derived: the time I met the ‘I’ and the reflection on ‘I’. Third, as a result of exploring how the Short-term Entering the Buddhist Priesthood experiences are currently being used in daily life, two domains were derived: discovery of a new direction of life in the future, and change of relationship with social environment. The results of this study will be the basic data for the composition of temple stays for middle-aged women.

pH 와 동결저장온도가 우육의 Drip , POV 및 동결상에 미치는 영향

손만성,채영석 ( Man Sung Son,Young Seok Chae ) 한국축산학회 1985 한국축산학회지 Vol.27 No.8

Three kinds of muscles (Cleido occipitalis: CO, Longissimus dorsi: LD and Semitendinosus: ST) of beef carcass were adjusted to pH 5.5, 6.1, 6.7, and 7.3. Drip quantity, peroxide value (POV) and ice crystallization in frozen muscles with the adjusted pH have been investigated. Drip values tended to decrease with increasing pH and in low temperature. LD muscle showed the lowest drip values as 19.2%, 21.0%, in ST and 22.5% in CO at -40℃. There were significant differences in drip values among the four different frozen temperatures (P$lt;0.01). The change in POV that took place in frozen stored muscles was lowest at pH 6.1 after the first and third day. POV in muscles treated by four different frozen temperatures had the lowest value at the temperature below -40℃ (P$lt;0.01). The development of POV in muscles showed more increase (P$lt;0.01) on 72 hours than on 24 hours in frozen storage with whole muscles. Many of the ice crystals in large size were found on muscles with pH at the lower range and over pH 6.1, changed from one (at pH 5.5) to several smaller sizes (at pH 7.3) having needle shapes. The muscle tissues with low pH, lnwever, were to form very small sized ice crystals and located on the center of the muscle fibers at -80℃.

국내 일부 학교 교실의 실내공기질 평가

손종렬(Jong-Ryeul Sohn),윤승욱(Seung-Wook Yoon),김윤신(Yoon-Shin Kim),노영만(Young-Man Roh),이철민(Cheol-Min Lee),손부순(Bu-Soon Son),양원호(Won-Ho Yang),이윤규(Yun-Gyu Lee),최한영(Han-Young Choi),이진성(Jin-Sung Lee) 한국실내환경학회 2006 한국실내환경학회지 Vol.3 No.1

Recently, indoor air quality (IAQ) in workplace, residence, and schools has been one of the major concerns of people, scientists and the related public. This study was performed to investigate the characteristics of indoor air quality(IAQ) in kindergartens, elementary school, middle schools, and high schools from June 2004 to May 2005 in Korea. We measured indoor air pollutants such as PM₁?, CO₂, formaldehyde, total bacteria colony(TBC), CO, radon, total volatile organic compounds(TVOCs), asbestos, and O₃ from school classrooms. The subjects were classified by building year based on the time span of 1, 1-3, 3-5, and 5-10 years. The levels of pollutants and physical factor in schools were compared with standards and guidelines of indoor air quality on the Ministry of Environment, the Ministry of Health and Welfare, and the Ministry of Education, and Human Resources Development of Korea. The major results obtained from this study can be summarized as follows. Asbestos and O₃ were not detected in all surveyed classrooms. However, we were able to detect CO, TBC, TVOCs, and formaldehyde in kindergartens, TBC in elementary schools, TBC, TVOCs and formaldehyde in middle schools, and formaldehyde in high schools. This study was conducted to provide a basis for the management IAQ in school. Therefore, we suggest that a national plan for the management of IAQ in school should be established through a long-term, continuous investigation for the proper assessment of IAQ in school and for the health risk assessment for student.

고밀도 막내침착을 동반한 막증식성 사구체신염 1 예

손호선(Ho Sun Son),고동혁(Dong Hyuk Ko),김향(Hyang Kim),이만호(Man Ho Lee),정을순(Eul Soon Chung),이상종(Sang Jong Lee),원남희(Nam Hee Won) 대한내과학회 1989 대한내과학회지 Vol.37 No.3

N/A Membranoproliferative glomerulonephritis (MPGN) with dense intramembranous deposits, so-called type II MPGN, is a subtype of idiopathic MPGN, and was described as a separate entity by Berger and Galle in 1963. It frequently occurs in older children and young adults and the clinical course is variable, but is generally progressive. The presenting feature is nephrotic syndrome in many patients, and proteinuria and hematuria are also seen frequently. Recently we experienced a case of type II MPGN which was proven by renal biopsy. A 14-year-old school boy was admitted to this hospital because of generatlized edema and hematuria which developed three weeks after an upper respiratory infection. The histopathologic findings showed a thickened capillary basement membrane with a tram-track appearance and epithelial crescent formation on light microscopy, and a characteristic rihbon-like appearance of the glomerular basement membrame with electron-dense deposits on electron microscopy. The patient received triple drug therapy including corticosteroid, dipyridamole and cyclophosphamide without improvement.

고혈당과 유리 지방산에 의한 호중구의 NAD(P)H Oxidase 활성화로부터의 혈관내피세포 손상

김상수 ( Sang Soo Kim ),김선영 ( Sun Young Kim ),이수형 ( Soo Hyung Lee ),강양호 ( Yang Ho Kang ),김인주 ( In Ju Kim ),김용기 ( Yong Ki Kim ),손석만 ( Seok Man Son ) 대한당뇨병학회 2009 Diabetes and Metabolism Journal Vol.33 No.2

연구배경: 산화스트레스가 당뇨병에서 혈관내피세포의 기능장애에 관여하여 혈관합병증의 발생에 중요한 역할을 하는 것으로 알려져 있다. 또한 죽상동맥경화증은 혈관세포들의 산화-환원 신호의 이상으로 인한 혈관의 만성 염증성현상으로 설명되고 있어, 산화스트레스와 염증이 당뇨병 합병증의 병태생리에 있어 중요한 역할을 하는 것으로 여겨지고 있다. 당뇨병에서 혈관합병증을 일으키는 기전에 대해 보다 명확히 규명하고자 본 연구에서는 호중구로부터의 superoxide 음이온 생성에 대한 고농도의 포도당과 유리 지방산의 효과와 이로 인한 혈관내피세포의 손상에 대해 알아 보고자 하였다. 방법: 인간 호중구를 5.5 mmol/L, 30 mmol/L D-glucose와 3 nmol/L, 30 μmol/L oleic acid를 함유한 배양배지를 만들어 1시간 동안 배양하였다. 인간대동맥 내피세포를 위배지로부터 배양한 호중구와 같이 배양하여 호중구의 혈관내피세포 부착률, 호중구의 활성화 및 superoxide 음이온 생성량, 호중구에 의한 내피세포의 세포독성 및 호중구의 NAD(P)H oxidase 소단위 발현 등을 측정하였다. 결과: 30 mmol/L D-glucose와 30 μmol/L oleic acid 배양조건에서 5.5 mmol/L D-glucose와 3 nmol/L oleic acid 배양조건에 비해 호중구의 혈관내피세포에 대한 부착률, 호중구의 활성화, 호중구의 superoxide 음이온 생성량 및 호중구에 의한 내피세포의 세포독성이 현저히 높았다. 30 mmol/L D-glucose와 30 μmol/L oleic acid로 처치하였을때 호중구의 NADPH oxidase의 막구성 요소인 gp91(phox)의 발현이 유의하게 증가하였다. 30 mmol/L D-glucose와 30 μmol/L oleic acid에 동시 노출로 인해 증가한 호중구의 내피세포에 대한 부착률, 호중구의 superoxide 음이온 생성, 혈관내피 세포독성 등은 NAD(P)H 억제제인 N-acetylcysteine로 전처치하였을 때 유의하게 감소하였다. 결론: 고농도의 포도당과 유리 지방산은 호중구를 활성화시키고, 호중구의 혈관내피세포에 대한 부착능을 증가시킨다. 또한 호중구에서 NAD(P)H oxidase을 통해 반응성 산소유리기 생성을 증가시켜 내피세포 주변의 염증반응을 일으켜 세포 손상을 증가시킨다. Background: Oxidative stress and inflammation are important factors in the pathogenesis of diabetes and contribute to the development of diabetic complications. To understand the mechanisms that cause vascular complications in diabetes, we examined the effects of high glucose and/or free fatty acids on the production of superoxide from neutrophils and their role in endothelial cell damage. Methods: Human neutrophils were incubated in the media containing 5.5 mM D-glucose, 30 mM D-glucose, 3 nM oleic acid, or 30 μM oleic acid for 1 hour to evaluate superoxide production through NAD(P)H oxidase activation. Human aortic endothelial cells were co-cultured with neutrophils exposed to high glucose and oleic acid. We then measured neutrophil adhesion to endothelial cells, neutrophil activation and superoxide production, neutrophil-mediated endothelial cell cytotoxicity and subunits of neutrophil NAD(P)H oxidase. Results: After 1 hour of incubation with various concentrations of glucose and oleic acid, neutrophil adherence to high glucose and oleic acid-treated endothelial cells was significantly increased compared with adhesion to low glucose and oleic acid-treated endothelial cells. Incubation of neutrophils with glucose and free fatty acids increased superoxide production in a dose-dependent manner. High glucose and oleic acid treatment significantly increased expression of the membrane components of NAD(P)H oxidase of neutrophil (gp91(phox)). Endothelial cells co-cultured with neutrophils exposed to high glucose and oleic acid showed increased cytolysis, which could be prevented by an antioxidant, N-acetylcysteine. Conclusion: These results suggest that high glucose and/or free fatty acidsincrease injury of endothelial cells via stimulating NAD(P)H oxidase-induced superoxide production from neutrophils. (Korean Diabetes J 33:94-104, 2009)