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특별강연 및 일반연제 발표 : CMV 항체 양성 반응을 가진 신장 이식 환자에서 pp(65) 항원 혈증 감사에 의한 CMV 감염의 추적 관찰
이방훈 ( Lee Bang Hun ),오하영 ( O Ha Yeong ),허우성 ( Heo U Seong ),김춘관 ( Kim Chun Gwan ),김신우 ( Kim Sin U ),이혁 ( Lee Hyeog ),김성민 ( Kim Seong Min ),백경란 ( Baeg Gyeong Lan ),이남용 ( Lee Nam Yong ),김성주 ( Kim Seong 대한신장학회 1999 춘계학술대회 초록집 Vol.18 No.2
김재형,도영수,신성욱,허우성,오하영,변홍식,Kim, Jae-Hyeong,Do, Yeong-Su,Sin, Seong-Uk,Heo, U-Seong,O, Ha-Yeong,Byeon, Hong-Sik 대한영상의학회 2003 대한영상의학회지 Vol.48 No.1
목적: 영구 혈액투석 경로 기능부전의 중재적 치료로 경피적 혈관성형술과 유로키나제를 이용한 맥동살포법에 의한 혈전용해술의 유효성을 평가하고 중재적 치료 전후 개통률에 영향을 주는 요인을 분석하였다. 대상과 방법: 1995년에서 2001년까지 혈액투석 경로의 기능부전으로 의뢰된 105예를 중재적 치료를 하였다. 38예는 인공 동정맥루이고 67예의 동정맥 이식편이었다.53예는 경피적 혈관성형술 만을 시도했으며 47예는 유로키나제를 이용한 맥동살포 혈전용해술과 혈관성형술을 시도하였다. 중재적 시술의 성공률과 장기 개통률을 평가하였다. 환자의 나이, 성별, 당뇨병의 유무, 혈액투석 경로의 위치, 동정맥 이식편의 종류, 동정맥 이식편의 배출 정맥, 중심정맥의 협착 유무, 잔존협착의 정도, 중재적 시술 방법에 따라 개통률의 차이를 평가하여 중재적 시술에 영향을 주는 요인을 분석하였다. 결과: 혈액투석 경로의 기능부전에 대한 중재적 치료의 성공률은 83.8%(88/105)였다. 전체적인 일차 개통률은 6개월에 58.7 $\pm$5.2%이며, 1년에 43.0 $\pm$6.0%,2년에 18.1 $\pm$6.0%였다. 인공동정맥루 / 동정맥 이식편 각각의 개통률은 6개월에 55.9 $\pm$9.2%/57.8 $\pm$6.5%, 1년에 45.8$\pm$10.0%/42.7%$\pm$8.4%,2년에 21.8%$\pm$9.8%/18.9 $\pm$8.4%였다. 전체적인 이차 개통률은 2년에 40.0 $\pm$8.1%였으며 95%유의 수준에서 통계적으로 유의한 요인은 없었으나 30%이상의 잔존협착이 있는 경우 (p=0.054)개통률이 감소하였다. 결론: 혈액투석 경로의 기능부전에 대한 중재적 치료는 높은 성공률과 개통률을 보이며 효과적인 일차적 치료방법이다. 잔존 협착이 30%이상인 경우 개통률이 낮아지는 경향을 보이며 이외 중재적 치료와 연관된 중요한 요인은 없는 것으로 사료된다. Purpose: To evaluate the effectiveness of percutaneous transluminal angioplasty (PTA) and pulse-spray pharmacomechanical thrombolysis (PSPMT) using urokinase for the management of insufficient hemodyalitic access, and to identify contributory patency-related factors following interventional procedures. Materials and Methods: Between August 1995 and July 2001, 105 cases of insufficient hemodyalitic access involving 38 artificial arteriovenous fistulae (AVF) and 67 graft arteriovenous fistulae (AVG) were treated interventionally. The patients underwent PTA alone in 53 cases and PSPMT combined with PTA in 47, and procedural success and long-term patency were evaluated in terms of a patient's age and sex, the presence of diabetes, the location of access, the type of AVG, the draining vein of AVG, the presence of central vein stenosis, the degree of residual stenosis, and the method of interventional procedure, and contributory factors were thus identified. Results: The overall technical success rate of interventional management was 83.8% (88/105), while the overall primary patency rate was 58.7$\pm$5.2% at 6 months, 43.0$\pm$6.0% at 1 year, and 18.1$\pm$6.0% at 2 years. In AVF/AVG groups, primary patency rates were 55.9$\pm$9.2%/57.8$\pm$6.5% at 6 months, 45.8$\pm$10.0%/42.7$\pm$8.4% at 1 year, and 21.8%$\pm$9.8%/18.9$\pm$6.5% at 2 years. The overall secondary patency rate was 40.0$\pm$8.1% at 2 years. No contributory factors were found (95% confidence level), though patency of access decreased when residual stenosis was more than 30% (p=0.054). Conclusion: Interventional management of insufficient hemodyalitic access has high success and patency rates, and is an effective primary method. There appear to be no contributory factors, though residual stenosis of more than 30% tends to decrease the patency of hemodialytic access.
변속기 케이스에서 발생하는 방사소음 해석 및 저감 설계
정성영(Jeong, Seong-Young),오하영(Oh, Ha-Yeong),박준홍(Park, Jun-Hong),박경진(Park, Gyung-Jin),이현아(Lee, Hyun-Ah),최중선(Choi, Joong-Sun) 한국소음진동공학회 2010 한국소음진동공학회 논문집 Vol.20 No.6
This article presents a method to calculate the sound radiation of transmission gearbox housing by using Helmholtz integral. Rayleigh integral is used to verify the method. Half-space radiation is considered because the actual gearbox housing is on hard place like concrete. For optimization, orthogonal array is used as a fractional factorial design method. Sound Radiation is calculated with simple source like plate and sphere shape, then actual gearbox BEM model is applied to the method.
콩팥 증후군과 혈액 응고인자 X 결핍을 보인 일차성 아밀로이드증
김민영 ( Min Young Kim ),곽수영 ( Soo Yeong Kwak ),김경희 ( Kyung Hee Kim ),이지인 ( Ji In Lee ),하영은 ( Young Eun Ha ),김대중 ( Dae Joong Kim ),오하영 ( Ha Young Oh ),이정은 ( Jung Eun Lee ),허우성 ( Woo Seong Huh ),김윤구 ( Yoo 대한신장학회 2008 Kidney Research and Clinical Practice Vol.27 No.1
We report a case of nephrotic syndrome and factor X deficiency secondary to primary amyloidosis. A 58-year-old man was referred to our hospital for evaluation of nephrotic syndrome and bleeding tendency. He was confirmed to have primary amyloidosis by renal biopsy, immunofixation electrophoresis and bone marrow findings. His bleeding tendency was due to prothrombin time prolongation caused by isolated factor X deficiency. If any patient with nephrotic syndrome has bleeding tendency due to coagulation abnormalities, that patient should be considered to have factor X deficiency secondary to primary amyloidosis.
저출력 RFID 시스템에서 인식거리 확대를 위한 전력 공급용 RF Shower 시스템
鄭珍旭(Jin-Wook Jung),裵宰賢(Jae-Hyun Bae),吳夏嶺(Ha-Ryoung Oh),成榮洛(Yeong-Rak Seong),宋昊俊(Ho-Jun Song),張炳埈(장병준),崔炅(Kyung Choi),李政錫(Jung-Suk Lee),李弘倍(Hong-Bae Lee),李學龍(Hak-Yong Lee),金鍾旻(Jong-Min Kim),申在澈(Jae-Che 대한전기학회 2006 전기학회논문지 D Vol.55 No.12
In this paper, we presented the synchronization module between RF shower system and RFID Reader to extend interrogating range on Mobile RFID system, Costas Loop and FPLL(Frequency/Phase Lock Loop) were used. We achieved compromised range of 3㎒ locking frequency, 1㎳ locking time and figured out remarkable Hopping frequency of the Reader. The prototype of the new designed RFID system has been tested with ISO18000-6 type-B Tag. The read range between designed RFID Reader and Tag has been measured, it increased triple times by adjusting the Shower system output level.