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장도현(Do Hyun Chang),이일수(Il Soo Lee),박종호(Chong Ho park),김영효(Young Hyo Kim),박기찬(Ki Chan Park),배성(Sung Bae),이상기(Sang Ki Lee),설병용(Byung Yong Seol),이채원(Chae Won Lee )) 대한소화기학회 1993 대한소화기학회지 Vol.25 No.3
A case of malignant lyrnphoma of the stomach is pented. A 58 years-old male patient was adimitted to this hospital with epigastric pain for about 1 years, Physical finding on admission was within normal limit except moderate tenderness on the epigastric region. The routine laboratory examination revealed no remarkable abnormalities. The gastrofiberscopy showed malignant gastric ulcer and biopsy revealed malignant gastric lymphoma. The total gastrectomy with gastrojejunostomy was performed. The histopathologic examinarion of the resected tumor mass revealed a diffuse mixed, large and srnall cell malignant lymphoma.
이일수(Il Soo Lee),문취용(Chi Young Moon),이인상(In Sang Lee),박봉태(Bong Tae Park),장도현(Do Hyun Chang),박종호(Chong Ho park),최호수(Ho Soo Choi),전광수(Gang Soo Chun),김동진(Dong Chin Kim),이채원(Chae Won Lee )) 대한소화기학회 1994 대한소화기학회지 Vol.26 No.5
Inflammatory fibroid polyps(IFP) is a relatively rare, benign polyp which is composed of fi- brous connective tissue, blood vessels, and infiltration of eosinophils. The majority of inflam- matory fibroid polyps has been reported with pathologic specimen in stomach and small intes tine. Terminal ileal inflammatory fibroid polyps differ from gastric lesion because they are larger and are almost all pedunculated. As a result, they tend to produce intussusception with intestinal obstruction. We present a case of inflamrnatory fibroid polyp of distal ileum causing intussusception with literature review.(Korean J Gastroenterol 1994; 26: 874 878)
회전자형 위치센서를 갖는 스위치드 릴럭턴스 전동기의 속도 제어
최규하,최기원,장도현 건국대학교 1996 學術誌 Vol.40 No.2
This paper describes the practical implementation of switched reluctance motor drive for a wide range of operation speeds. Turn-on/off angle of phase switches and magnitude of current depend upon the speed and load variations. The angle controller is designed with one-chip microprocessor 8051 for various real time applications. Turn-on/off angle is controlled by timer/counter mode 2 of 8051. Position sensor for SRM drive consists of the rotor shaped slot-disc and opto-interrupter. Algorithm to control the speed of SRM with rotor type position sensor and to maintain the speed under the changed load is proposed. Experiments are executed to verify the proposed algorithm.