2015년 과학기술계 10대 주요 이슈

이성호,임영훈,장필성,이세민,유은,이성호(편집자) 과학기술정책연구원 2015 과학기술정책 Vol.- No.209

다한증 환자에서 클립을 이용한 교감신경 교통가지 차단술 사체 연구 및 임상적용

이성호,조성준,정재승,김태식,손호성,선경,김광택,김형묵 대한흉부외과학회 2003 Journal of Chest Surgery (J Chest Surg) Vol.36 No.8

배경: 다한증 환자의 가장 효과적인 치료방법은 흉강경 최소절개를 이용한 교감신경 차단술로 알려져 있다. 하지만 수술 후 발생하는 보상성 다한증과 무한증이 수술의 만족도를 감소시키는 중요한 요인이므로 환자에게 적극적인 수술 적응을 하기가 어렵다. 합병증을 줄이기 위한 방법으로 교감신경의 선택적인 교통가지 차단술을 시행하였으나 시술의 어려움과 혈관 손상으로 인한 출혈의 위험성으로 보편화되지 못하였다. 본원에서는 사체를 이용하여 새로운 수술기법을 연구하고 이를 임상에 적용하여 좋은 결과를 얻었기에 보고한다. 대상 및 방법: 포르말린 처리를 하기 전 사체 3구를 대상으로 실험하였다. 앙와위에서 전흉부를 모두 절제한 후 양측 흉부 교감신경을 노출시켰다. 교감신경의 분지와 교통가지의 위치를 확인하였고 2번째와 3번째 교통가지에 클립을 이용한 차단술을 시행하였다. 교통가지 차단술 후 교감신경절을 포함한 교감신경을 절제하여 교통가지의 차단 정도를 관찰하였다. 임상적용은 25명의 환자에서 시행하였으며 평균 연령은 21세였다. 수술은 전신마취와 양측 폐 환기를 하고 반 좌위 자세에서 시행하였다. 4번째 늑간에 2 mm 흉강경을 삽입하였고 겨드랑이에 5 mm 트로카를 삽입하고 내시경용 클립을 이용하여 2번째와 3번째 교감신경절 교통가지를 차단하였다. 수술 후 전화 설문 조사를 통하여 합병증의 유무, 만족도, 보상성 다한증의 발생 정도를 관찰하였다. 결과: 사체 3구에서 모두 교감신경 교통가지의 차단을 완벽하게 시행할 수 있었다. 임상환자에서 모두 수술로 증세의 호전이 있었으며 기존의 교통가지 절제술에 비하여 수술 시간을 단축할 수 있었고 수술로 인한 합병증은 발생하지 않았다. 수술 후 수부 다한증은 모든 환자에서 호전되었으나 4명의 환자는 수술의 만족도가 감소하였다. 보상성 다한증은 15명의 환자(60%)에서 중증 이상으로 발생하였고 6명의 환자는 없거나 잘 느끼지 못하는 정도로 발생하였다. 미각다한증은 2명의 환자에서 발생하였으나 정도는 심하지 않았다. 결론: 본 연구의 수술방법은 2개의 피부 절개와 하모닉 스칼펠, 클립을 사용하여 쉽게 교감신경의 교통가지를 차단할 수 있었고 교통가지 절제술에 비하여 수술시간 및 출혈의 위험성을 감소시킬 수 있었다. 또한 교감신경 절제술에 비하여 비슷한 정도의 수술 성공률을 보이면서 보상성 다한증의 정도나 발생 빈도를 줄일 수 있어 우수한 수술 방법이라 생각한다.

FMS 모델화를 위한 Simulation

이성호 淸州大學校 産業經營硏究所 1989 産業經營硏究 Vol.12 No.1

유한요소법과 반응표면법을 이용한 수직배열형 양측식 영구자석 선형동기전동기의 최적설계

이성호,이동희,김창업,김홍중 대한전기학회 2012 대한전기학회 학술대회 논문집 Vol.2012 No.7

心臟性喘息 治療法의 檢討

李聖浩 中央醫學社 1969 中央醫學 Vol.16 No.3

居昌郡 住民의 中心地利用(Ⅰ)

李成浩,崔三鎔 부산대학교 사회과학대학 1984 社會科學論叢 Vol.3 No.1

During the last two'decades the nation has experienced a drastic change of the nation-wide spatial features. The economic expansion of the industrial bases in general and the dynamic growth of manufacturing in particular have persisted in the process of a series of economic development schemes, along with the physical land plans, resulting in the phenomenal transformation in the existing spatial framework of the nation. Especially, the construction of the national expressway networks was a propellent for changes in the various facets of the environment, physical and socio-cultural. Even though the highway network, together with facility of communication system, has helped to speed up the flow of the man and goods among region, it has been also as factor for the regional development in the typical rural hinterland. It is assumed that once a new highway is built up, the people in nearby area affected by the barrier of physical environment will receive many facets of environmental impacts in daily life. One of its positive side-effects is the increase of opportunities in terms of social and economic activities, because people, set free from the physical barrier, are provided with the easy access for information and movement. This paper is primarily concerned with the finding of the perceived behavioral modes in a typical from communities in relation to the utilization of the central places; it is also aimed at providing some useful information of socio-economic status in the physically isolated rural area by which a new highway under near completion will be passed. Geochang-gun(郡) was selected for the case study. Tweleve sruvey units, of which one unit consisits of 18 subitems, were selected to obtain the broad scales of socio-economic data through interview with residents to see how activity or perceived activity is related to the basic socio-economic structure and how people respond to their needs of certain services such as education, shopping movement of residents, choice of place for jobs. Some characteristics found out through the analysis can be as follows. First, Geochang-gun belongs to an isolated rural society with dominant mode of farming activity in which the traditional value of life is prevalent but the changes in the socio-economic environment loom through diffusion of innovation. Second, it seems that most farming communities have faced the trend of population decrease due to outmigration toward urban areas while Geochang-eup(邑), a central place town, has shown the opposite effect for its strong tertiary industrial activities. Third, it is identified that Geochang-eup has played more important central place functions relative to its comparable counterparts in the size of population because of lack of compective towns or cities at the perimeter of the 50km radius. Fourth, in relation to the perceived level of familiarity for neighbor cities, people seem to be biased toward such factors as distance from cities, functions respective city provides, centrality of each and presence of kinfolks and friends. Perceived levels for neighbor cities appeared in the order of Daegu, Busan, Seoul and Junju. Fifth, as regard the perception for resident movement, it seems that people are directly influenced by personal motive personal experience as to the purpose of movement, the time-interval for residence, the nature of movable place and distance. The preferred place for seeking jobs wes choiced in the order of Busan, Daegu, Seoul, Geochang-eup and Jinju whereas the desirable place for the higher education appeared in the order of Daegu, Seoul and Jinju. Sixth, according to the analysis of utility of central place facilities based on 4 class of 15 items, most people have been relied on Geochang-eup Daegu city for meeting their needs for services. Daegu shows more acceptance in the highest order functions in the hierarchy, while Geochang-eup receives a broad scale of preference in the upper three order functions and village centers dominate the fourth order function. Seventh, it is identified that the social status of the local residents reflects the differences in th preference of the central place. As a result of this basic analysis, it is felt that the present paper serves a useful but limited purpose by drawing attention to the behavioral aspects of social environment which need to be through investigated in the follow-up research in the near future.

21世紀를 向한 韓國敎育 發展方向의 摸索

李星鎬 연세대학교 교육대학원 1990 연세교육과학 Vol.38 No.-

연속주조 빔블랭크의 응고층 형성에 관한 수치해석

이성호,이동녕 대한금속재료학회(대한금속학회) 1988 대한금속·재료학회지 Vol.26 No.3

A two dimensional finite difference model has been developed to calculate the temperature distribution and the solidification profile of the continuously cast beam blank. The effect of the Pouring temperature, the casting speed, and the cooling condition has been examined. It has been shown by the calculation that the surface temperature and the solid shell thickness of the cast do not significantly vary with the pouring temperature or the casting speed, and that the effect of the cooling condition, particularly in the mold is critical. Non-uniform cooling resulting from the air gap formation develops the thermal stress in the solid shell and this is the main cause of the surface defects. Consequently, rather soft cooling should be applied to decrease the possibility of the crack formation.

고분자 기반 탄소나노박막 제조 및 응용

이성호,이재선,황준연,조한익,김태욱,나석인 한국공업화학회 2013 한국공업화학회 연구논문 초록집 Vol.2013 No.-

圓筒形 ICR-CELL 內에서의 이온運動, 有效-이온-싸이크로트론-周波數 및 微細構造 分裂과의 類似性

李晟鎬 건국대학교 1988 學術誌 Vol.32 No.2

The ion motion in a cylindrical Ion Cyclotron Resonance(ICR) cell is a characteristic three dimensional motion which can be treated in a harmonicas approximation. The electric field in the cell has a cylindrical symmetry, therefore the ion motion in the midplane perpendicular to a static magnetic field is very similar to that of the electron in a hydrogen atom. We were able to represent the ion motion exactly in a rotating coordinate system and to deride the effective ICR frequency of the ion in the cell. The theoretical results which are in good agreement with the experimental results have been compared with the electron behavior in the hydrogen atom and discussed.