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안수열,임학,문미경,최영식,차태준,서승연,구자영,박병채 대한내과학회 1992 대한내과학회지 Vol.42 No.2
We assessed 79 cases of chloangiocarcinoma which was diagnosed histologically at Kosin General Hospital and Kim Hae Gospel Hospital from 1986 to 1990 and the results are as follows; 1) More than half of all patients were beyond sixth decade, the ratio of male to female was 2:l and 2.8:1 in intra and extrahepatic cholangiocarcinoma, respectively. 2) Prevalence rate of clonorchiasis was 30%, 18.4% in intrahepatic and extrahepatic cholangiocarcinoma, respectively, and prevalence rate of clonorchiasis in intrahepatic cholangiocarcinoma was markedly higher than that (19.6%) of general population in Pusan, Kyungnam area. 3) The predominant symptoms were general weakness (90.0%), abdominal pain (53.3%), jaundice (46.7%) in intrahepatic cholangiocarcinoma, and in extrahepatic cholangiocarcinoma, jaundice was the most frequent symptom (75.5%). 4) Of the 11 patients with distant metastases in in trahepatic cholangiocarcinoma, the most common site of metastases was abdominal lymph nodes (91 .O%) followed by liver (36.4%), peritoneum (27.3%) and kindey (18.2%). 5) Serum CEA level was more than 10ng/㎖ in 66.7% of intrahepatic cholangiocarcinoma and 26.5% of extrahepatic cholangiocarcinoma which suggested that serum CEA level may be more useful in the diagnosis of intrahepatic cholangiocarcinoma than extrahepatic cholangiocarcinoma. Serum CA 19-9 level was more than 37 U/㎖ in 80.0% of intrahepatic cholangiocarcinoma and 67.3% of extrahepatic cholangiocarcinoma. 6 ) Of the 11 patients with distant metastases in intrahepatic cholangiocarcinoma. 9 patients (81.8%) had serum CEA levels of more than 60ng/㎖, and 5 of 19 patients (26.3%) with localized tumor showed CEA levels of more than 60 ng/㎖, the difference between these two groups was statistically significant (p< 0.05).
매입형 영구자석 동기전동기의 약계자 제어를 위한 최대전압 선정에 관한 연구
김수열,김장목,임익헌,류호선,안용호,윤기갑,전향식 한국산업안전학회 2000 한국안전학회지 Vol.15 No.2
The constraint conditions are the stator voltage and the stator current to operate the motor in the flux weakening region. The maximum current is limited by the inverter current rating and the machine thermal rating. Given DC link voltage to control the motor in the flux weakening the maximum voltage is determined by considering PWM strategy, dead time, voltage drop of the inverter switching device, and the margin of the voltage for current forcing. In this paper, the new method to determine the available maximum voltage is derived by the quantitative method and by considering the factors of the voltage drop. The proposed method to determine the maximum voltage is very useful to improve the stability of the motor system and to enlarge the speed operation region in the flux weakening operation. Therefore the utility of the maximum voltage is increased
2004-T3 AI합금의 표면미소균열 분포특성과 잔존수명평가법에 관한 연구
안원기(Won Kee An),주원식(Won Sik Joo),장득열(Deuk Yul Jang),박수열(Soo Young Park),조석수(Seok Swoo Cho) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
The fracture of a structure, machine, machine part comes of surface micro-crack initiated and propagated at the root of notch, where the stress is high. Irregular distribution characteristics of micro-crack on the basis of elastic-plastic fracture mechanics doesn't predict exactly remaining life of them. It is thought that maximum micro-crack length represents the total fatigue damage because fatigue can be characterized as a progressive failure phenomenom that proceeds by the propagation and coalescence of micro-cracks to an unstable size. The maximum micro-crack length in an area larger than the sample area can be estimated by statistics of extremes. Therefore, the remaining life of components can be accurately predicted using the distribution of micro-crack length in critical areas and the fatigue damage model.<br/>
면역억제제투여중 발생한 Listeria monocytogenes에 의한 뇌막염 2예
임학,안수열,유경무 고신대학교(의대) 고신대학교 의과대학 학술지 1994 고신대학교 의과대학 학술지 Vol.10 No.1
It is well known that Listeria monocytogenes may cause meningitis in the immunocompromised host. We experienced 2 cases of L. monocytogenes meningitis in patients with renal transplant and with systemic lupus erythematosus. The confirmation of diagnosis was made by CSF culture and identification of pathogen. In both cases, third-generation cephalosporins were given before the identification of pathogen but no clinical improvement was found. Following the substitution cephalosporin by ampicillin, one patient died and the other recovered without any CNS complication.