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5-Fluorouracil이 腸粘膜에 미치는 病理組織學的 變化에 對한 實驗 硏究
宋達孝 충남대학교 대학원 1975 論文集 Vol.4 No.-
The histopathological changes in the intestinal mucosa after 5-Fluorouracil, 200㎎/㎏ body weight, intraperitoneal injection were investigated, and the results obtained were as follows. 1. The retrogressive changes in the glandular and surface epithelium were most prominent at 3rd and 4th day after the drug administration. 2. The decrease of the goblet cells in the intestinal mucosa was in peak after 3rd and 4th experimental day, and the cells were completely disappeared from the mucosa. 3 The atrophic changes of the villi of the small intestine were more marked in the 3-4 day after drug administration. 4. The mitotic figures in the intestinal cryptal cells were significantly increased in numbers after 3 days in the colon and 6 days in the small intestine, respectively. 5. The dysplastic changes in the intestinal mucosa were appeared from 3rd to 7th experimental day and thereafter disappeared.
송달원(Dal Won Song),여창기(Chang Ki Yeo),송인혁(In Hyuk Song),남영진(Young Jin Nam),이준엽(Jun Yeop Lee),구민본(Min Bon Koo),남성일(Sung Il Nam),안병훈(Byung Hoon Ahn) 대한두경부종양학회 2007 대한두경부 종양학회지 Vol.23 No.1
Background and Objectives :The prevalence rate of laryngeal cancer, the cancer known as good prognosis in comparison to other malignancy, accounts for 1% of all malignancy in Korea(Korea Central Cancer Registry, 2002). The purpose of this study is to review the treatment experiences of our hospital and find prognostic fac-tors in laryngeal cancer patients. Materials and Method :A retrospective study was conducted on 244 laryngeal cancer patients between January 1987 through December 2003. Age, sex, TNM stage, 5 year survival rate, prognostic factors were analyzed. Results :The overall 5 year survival rate was 57.8%. The 5 year survival rate according to primary site and treatment method showed supraglottis 49.5%, glottis 79.2%, transglottis 28.2% and surgery only 71.4%, radio-therapy only 58.1%, post operative radiotherapy 47.2%, salvage operation 52.0%. There was no statistically significant difference among the results obtained by 4 different methods of treatment. but in supraglottis, surgery only has good 5 year survival rate(75.8%) compare to radiotherapy only(38.3%), postoperative radiotherapy (20.0%), salvage operation(43.7%) and there was statistically significant difference. The 5 year survival rate according to clinical stage and T status showed 84.1%, 37.2%, in stage I & II, III & IV respectively, 72.9%, 37.5% in stage T1 & T2, T3 & T4 respectively. The 5 year survival rate according to nodal status showed N(-)77.1%, N(+)35.6%. Conclusion :Those patient with early T stage, early clinical stage, glottic cancer, negative neck node and surgery only patient in supraglottis showed good treatment results in univariate analysis. The clinical stage and primary site of laryngeal cancer were found to be significant prognostic factors in laryngeal cancer patients in multivariate analysis.
송달호(Dahl H. Song),민경호(Kyung H. Min) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
High-speed train of push-pull type called as G7 train has been developed and chosen as the model of KTX-Ⅱ which will be operated on Honam Line nexr year. However, the EMU-type high-speed train appeared to be the recent trend that foreign markets have shown. Also, in the near future, a great number of new train sets are needed to accommodate the increased passengers in our country. Thus, development of the high-speed EMU was decided, planned, and started. In the development, included were almost all fundamental key technologies such as noise and vibration reduction in a passenger cabin, running characteristics, aerodynamic analysis, crashworthiness evaluation, EMI/EMC analysis, design of the cooling system for the propulsion control system, enhanced performance of transformer and switching converters, synchronous traction motor with permanent magnets, new design of front nose and ergonomic interiors, application of advanced information technology(IT) and smart sensors and the cost reduction of construction of railway bridges, etc. Each key technologies are carried out as sub-project independently but under the supervision of a project. The project will develop the high advanced level of technologies and provide necessary know-why"s and support the team in charge of the development of the high-speed EMU, Hyundai Rotem Co. Ltd. The high-speed EMU will be successfully developed with the support of the project.
송달호,이유진,최영휴,Song, Dal-Ho,Lee, Yu-Jin,Choe, Yeong-Hyu 한국기계연구원 1989 기계연구원소보 Vol.19 No.-
Analytical and experimental studies are performed to identify the longitudinal vibration characteristics of elevator system such as the natural frequencies, and the magnification factor at resonance. In the analytical study, a computer program is developed to analyze the vibration characteristics of elevator with varing rope length of elevtor, stiffenss of thimble rod spring, and excitation frequency. The shorter rope length and the stiffer thimble rod spring make the natural frequencies of elevator higer. The resonance at the first natural frequency spreads over the entire travelling range, whereas, that at the second one ranges relatively short, region. The first natural frequencies of the Gald-Star Twin Building and the Korea Trading Center Building obtained by the experiment are overall in good agreement with the analysis result..
송달호(Song Dahl Ho),김남호(Kim Nam Ho),김종현(Kim Jong Hyoun) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
교통 시스템의 문제를 해결하기 위하여 새로 도입되는 신교통 시스템은 지금까지의 지하철과 버스와는 다른 형태이면서 다양한 조건이 요구된다. 본 논문에서는 신교통수단으로 개발을 본격화하려는 PRT 시스템에 대한 요구조건 몇 가지를 검토하였다. 검토된 요구조건 항목은 차량 당 승차인원, 차량구조, 추진시스템, 제동장치 및 분기장치이다. 각 항목에 대해서 채택할 수 있는 방식들을 분류하고, 이들의 장단점을 분석하였다. 차량 당 승차인원은 3~4인이 적절하지만, 이는 가이드웨이의 경량화에 의한 건설비 절감 및 요금정책 등에 지배를 받으므로 좀 더 면밀한 검토가 필요함을 알았다. 차량의 구조는 I형이 장기적인 관점에서 유리하다. 추진장치로는 선형전동기가 적절하며, 선형전동기는 가이드웨이에 설치하지 말고 차량에 탑재되어야 한다. 제동장치는 전기제동을 주 제동장치로 하고 다중시스템으로 Fail-Safe 기능을 갖도록 설계되어야 한다. 분기장치는 차량에 탑재된 기계식이 적절함을 알 수 있었다. 앞으로 개발할 PRT의 사양을 결정함에 있어서 이러한 방식들에 대한 검토결과를 바탕으로 사양이 선정되어야 한다.