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장성철(S.C. Jang),정영식(Y.S. Jung),이선의(S.Y. Lee),윤소남(S.N. Yoon),박중호(J.H. Park),함영복(Y.B. Ham) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
We have processed the developing of vane damper with accurate control by using bevel gear which is a flow-control equipment of marine boiler's FD fan on this research. For the developing of vane damper, we have corrected some problem from welding & assembly process by changing the design, and for the case of an emergency case, we have applied the easy disassembly & assembly on that vane damper. Compared to rink type vane damper in current, we have focused on high efficiency with low price of that new developing damper. For selection of actuator, we have tried to find the propriety with our developing focus. Also, we have developed a jig of assembly processing for high productivity with quality, it caused the best assembly performance with heat-treated & processed parts.
장성철(S. C. Jang),김재웅(J. W. Kim),윤한재(H. J. Yoon),허동훈(D. H. H),이선의(S. Y. Lee),민순규(S. K. Min),이원희(Y. H. Lee) 한국생산제조학회 2010 한국공작기계학회 추계학술대회논문집 Vol.2010 No.-
In this study, the design of high efficiency exhausted injector system. The result shows that existing injector system has problem with fume collector system. Model-3 shows difference and high flow rate as meaning of suction capability. Finally, the improved high efficiency exhausted injector was designed.
임산부에서 Hepatitis C Virus 감염에 관한 연구
김용욱 ( Yong Wook Kim ),이종민 ( Jong Min Lee ),김광준 ( Gwang Jun Kim ),이향미 ( Hayng Mi Lee ),김향미 ( Hayng Mi Kim ),김석영 ( Suk Young Kim ),이지성 ( Jee Sung Lee ),이선 ( Sun Lee ),김영진 ( Young Jin Kim ),손영수 ( Young S 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.4
Objective : Our purpose was to estimate the prevalence of hepatitis C virus seropositivity and define the risk factors for HCV infection in a group of pregnant women and the effect of HCV infection to mother and baby at the time of delivery. Methods : From March 1997 to February 1998, 5655 women who delivered over 20 gestational weeks at our hospital were screened for HCV-Antibody(RIA), and the samples of most of HCV-Ab positive cases were analyzed for HCV-RNA by polymerase chain reaction(PCR). We also studied the risk factors for HCV infection, the effect of HCV infection to mothers and neonates at delivery. Results : Of 5655 mothers 25 (0.44%) were HCV-Ab positive, and 20 of HCV-Ab positive mothers were analyzed for HCV-RNA by PCR. Of 20 HCV-Ab positive mothers 12 cases (60%) were HCV-RNA positive. Risk factors significantly more prevalent among HCV-seropositive patients were : a history of habitual intraveneous drug use, a history of smoking, alcohol drinking during pregnancy, having liver cirrhorsis. The proportions who had received a blood transfusion, had a history or ongoing syphilis or were positive for hepatitis B virus surface antigen were not significantly different between seropositive and seronegative women. Liver function test at delivery was abnormal in 4 cases(16%) of HCV-Ab positive group. And the number of abnomal liver function test cases in HCV-Ab negative group were 47(0.83%). This had statistical difference. In neonates at delivery, all 20 neonates of 20 ones having HCV-Ab positive mother were HCV-Ab positive. But only 2 cases of 20 babies were HCV-RNA positive. Conclusion : Mothers who have risk factors such as injecting drug use, smoking, alchohol drinking and liver cirrhorsis, should undergo HCV-Ab testing and quantitative HCV-RNA testing by PCR. More advanced studies about vertical transmission of HCV infection are needed.
미분화세포종을 동반한 고환퇴행증후군중 Swyer씨증후군 1 예
허주엽,이선,이주희,용창임 대한산부인과학회 1997 Obstetrics & Gynecology Science Vol.40 No.2
Dysgenetic streak gonads were removed laparoscopically from a phenotypic female with Swyer syndrome(ie, XY karyotype, sexual infantalism, primary amenorrhea, and Mullerian structures). Pathologic examination revealed a dysgerminoma in one of her gonads. We report a case of dysgerminoma with 46,XY Swyer syndrome and review of literature.