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옥종한(Jong Han Ok),강영진(Young Jin Kang),김태진(Tae Jin Kim),이성미(Seong Mi Lee),엄재화(Jae Hwa Eom),정재성(Jae Seong Jeong),정영기(Yeong Ki Jeong) 대한소화기학회 1993 대한소화기학회지 Vol.25 No.1
N/A Carcinoma of the stomach is one of the most prevaleni maliganancies in Korea and the prognosis is usually poor. However, the prognosis for the early gastric cancer (EGC) has been reported excellent and this is why emphasis is put on the early diagnosis and treatment of this grave problem. This study analyzes the incidence, morphological clas.ification, location of the lesion, size of the lesion, depth of invasion, lymph node metastasis, diagnotic accuracy of double contrast X-ray and endoscopy. histopathologic claesification and clinical sym,ptoms of 45 cases of EGC operated on from 1983 to 1990 at Maryknoll Hospital. The incidence of EGC was 5. 6% of all stomach cancer diagnosed during the same period and 11.1% to the resected cases. Out of 45 cases of early gastric cancer, 29 cases were male, 16 cases female, the ratio of male to female was 1.8: 1, and the mean age was 52.6 years old. The most common types of early gastric cancer were IIc type (26.7%), and its combined type (37.3%). The common sites were antrum (53.3%) and lesser curvature (33.3%). 25 cases (55. 5%) were between 1-2 cm in size and less than 3 cm was found in 41 cases (91.1%). Of the 9 cases with mucosal lesion, none had lymph node metastasis. But, 5 (13.9%) out of 36 cases with submucosal invasion showed lymph node metastasia The depth of invasion was related to the incidence of lymph node metastasis (P,0.05). But the size of the losion was not related. The diagnostic accuracy of EGC for endoscopy was 66.7%, and for double contrast X-ray it was 35.6%. The most common type of EGC was tubular type of adenocarcinoma. Common complaints were epigastric discomfort and pain (62. 2%), weight loss (17. 8%), and epigas' tric fullness(8. 9%). And the duration of symptoms lasted within 1 year (77.8%).
옥종한(Jong Han Ok),정재성(Jae Sung Chung),김태진(Tae Jin Kim),엄재화(Jae Wha Um),이성미(Sung Mi Lee),정영기(Young Gi Chung) 대한소화기학회 1991 대한소화기학회지 Vol.23 No.2
Squamous cell papilloma of esophagus is a very rare benign tumor. It is reported with increasing frequency recently. The lesion is small and diagnosis is often fortuitous. The etiology remains unknown. Grossly, on endoscopy, the papilioma appears as a smooth, round, pink, sharply demarcated, sessile tumor projecting from the esophageal wall. Histologically, the squamous papillomas are benign sessile lesions of surface epithelium, characteristically composed of finger-like projections of tissue, lined by an increased number of squamous cells. The average age range is 6th decade, men outnumber women almost two to one, most are distal in location, and symptoms are diverse. We observed 2 cases of squamous cell patilloma of esophagus. Our purpose here is to report these cases and review the literatures.
단류식 창조발전의 조력발전소 최적화 운영 Model 개발에 관한 연구
김현한(Kim Hyun-Han),김만기(Kim Man-Kie),김준규(Kim June-Kyou),옥연호(Ok Yeon-Ho),김광호(Kim kwang-Ho),정종찬(Jeong Jong-Chan) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
Tidal power station is using the difference of the ebb and flow and the single action tidal power is dependent on tide amplitude and basin volume. Therefore the inflow of basin in rainy season has also effect on the daily power. Also if operating units are changed then starting head too changed. Therefore the number of units are very important for the optimization model. According to our study the primary point when we make a determination of optimization is starting head and governorl control mode. On this study optimization model for tidal power station is considered all of this conditions
논문 : 공기-브러쉬와 폭약 세척 방법에 의한 암반관정의 세척 효과 검증
이정환 ( Jeong Hwan Lee ),함세영 ( Se Yeong Hamm ),한석종 ( Suk Jong Han ),옥순일 ( Soon Il Ok ),차은지 ( Eun Jee Cha ),조희남 ( Heuy Nam Cho ),추창오 ( Chang Oh Choo ),김무진 ( Moo Jin Kim ) 대한지질공학회 2011 지질공학 Vol.21 No.4
공막힘에 의해 지하수 채수량이 감소되고 수질이 저하된 관정을 여러 가지 세척 방법으로 재생시켜 주면 관정의 지하수 산출량과 수질을 개선시킬 수 있으며, 관정의 수명도 연장시킬 수 있다. 본 연구에서는 부산광역시 금정산에 위치하는 2개의 암반관정에 대하여 폭약을 이용한 방법과 공기-브러쉬를 이용하여 막힘 관정을 세척하고 세척효과를 수리시험, 수질 분석 및 지구물리검층(광학영상 촬영과 초음파영상 촬영)에 의해서 확인하였다. 공기-브러쉬 세척 방법에 의해서는 세척 후에 비양수량이 최대 약 273%까지 증가하였으며, 세척 후의 지하수 수질을 보면 F-, SiO2가 증가하고, Cl-, NO3-, 탁도는 감소하였다. 폭약 방법을 이용한 결과 세척 전보다 후에 비양수량이 최대 약 156% 증가되었으며, 세척 시간이 경과하면서 F- 와 SiO2 농도는 증가하였고, Cl-, NO3-, 농도와 탁도는 감소하였다. The application of appropriate rehabilitation works can improve productivity and water quality of clogged wells, with extending the operation of the wells for a certain period. This study verified rehabilitation effect of the clogged wells by means of explosive method and air brush surging and by using hydraulic tests, water quality, and geophysical logs (optical and acoustic televiewer logs) before and after the cleaning works on the two wells drilled in bedrock in Mt. Geumjeong, Busan City. Air-brush surging method resulted in maximum 273% increase of the productivity with the concentration of F-, SiO2, and a decrease of turbidity and the concentration of C1-, NO3-. The explosive method resulted in maximum 156% increase of the productivity with an increase of the concentration of F-, SiO2 and a decrease of turbidity, Cl-, NO3-.
이동길(Dong Kill Lee),김남호(Nam Ho Kim),박해일(Hae Il Park),이중희(Jung Hee Lee),정영기(Yung Ki Jung),옥종한(Jong Han Ok) 대한소화기학회 1984 대한소화기학회지 Vol.16 No.1
In the upper gastrointestinal bleeding, bleeding from the esophageal varices in patients with portal hypertension and cirrhosis is not uncommon. Bleeding from duodenal varix is the rare complication of portal hypertension, however, we must keep in mind the possibility. Duodenal varices were first reported in 1931, by Alberti. W., subsequently, only less than 30 cases has been reported in the English literature. In this case, we found 42 years old female patient who had the only duodenal varices with liver cirrhosis and showed the repetitive upper gastrointestinal bleeding without massive hemorrhage, and we emphasize the importance of endoscopy and hypotonicduodenography in establishing the diagnosis.
최영선(Young Seon Choi),김태익(Tae Ik Kim),이형걸(Hyung Gul Lee),김용근(Yong Geun Kim),김미경(Mi Kyoung Kim),박희욱(Hee Ug Park),강영진(Young Jin Kang),옥종한(Jong Han Ok) 대한내과학회 1998 대한내과학회지 Vol.54 No.1
N/A findings were non-specific, including positive occult blood, increased erythrocyte sedimentation rate, anemia, hypoalbuminemia, and abnoml liver function test. According to the severity of disease, there was 50.8% in mild, 30.6% in moderate and 18.6% in severe disease. The difference of severity according to the extent of disease was not found. According to the extent of disease, there was 23.8% in proctitis, 25.4% in distal, 23.8% in left and 25.4% in extensive colitis. The incidence of proctitis was not more increased after 1991, compared with the previous records. 119 cases were treated medically and most cases showed exellent sort-term response(95.7%). According to the severity, the symptomatic remission rates of milder disease were significantly higher. Surgical treatment was performed in 4 cases(5 times); its indications were perforation in 2 cases, bleeding in 2 cases, and one case had failed to medical treatment. Conclusion: These results suggest that the trends of newly diagnosed cases each year have been increased recently. To evaluate the statistically significant clinical features, progress of disease and prognosis of ulcerative colitis in Korea, the nationwide collection of data is necessary.