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노약자 및 장애인을 위한 전동스쿠터용 컨트롤러 국산화 개발
김병욱(Byoung-Wook Kim),임승관(Seung-Kwan Lim),노신래(Shin-Rea Roh),임병현(Byung-Hyun Lim),김영민(Yeong-Min Kim) 대한전기학회 2009 전기학회논문지 P Vol.58 No.1
In this paper, A localized electromotion scooter controller for the senior and disabled is developed. Recently, the population which uses the electromotion wheel chair or electromotion scooter is increasing. The reason is that the electromotion wheel chair and electromotion scooter were newly applied in medical treatment grant item. In the whole world, electromotion scooter controller is corning to be produced above a hundred of millions. The products produced are consuming from most Europe and North America. the demand is increasing rapidly in Korea. The electromotion scooter which is sold to domestic is about 40,000 units, and about 70% or more in the products are imported from the foreign nation. Also controller for electromotion scooter uses the foreign nation product. Consequently, as the localized electromotion scooter controller is developed, it will be able to expect an income substitution effect, and apply to the agriculture and leisure mobile equipment parts.
터보냉동기의 고효율 운전을 위한 협조 방식 기반의 압축기 대수제어
정석권(Seok-Kwon Jeong),임승관(Seung-Kwan Lim),류근수(Keon-Su Ryu) 대한설비공학회 2015 설비공학 논문집 Vol.27 No.5
This paper discusses compressors operating number control strategy using cooperative logic to cope with variable partial load for high efficiency of a centrifugal water chiller. The cooperative logic is composed of a speed-up and speed-down controller, enabling smooth operation of compressors and equivalent distribution of thermal load in each compressor. This centrifugal water chiller design can be operated with high efficiency without incurring excessive energy waste and large transient phenomena at partial load states. Simulations in MATLAB and experiments in a real chiller system were conducted and verified the high efficiency control of a centrifugal water chiller achieved by the suggested strategy.
HDTV SMPS Aging System을 위한 원격 계측 제어 시스템 개발
김병욱(Byoung-Wook Kim),임승관(Seung-Kwan Lim),고대성(Dae-Sung Ko),노신래(Shin-Rea Roh),김영민(Yeong-Min Kim) 대한전기학회 2009 전기학회논문지 P Vol.58 No.1
In this paper, A telemetering control system for the HDTV SMPS Aging System is developed. Manual Aging System is usually used to measurement of a produced SMPS. But in this system, the respective operator is arranged and monitoring the test cycle visually. According to an excess of the test time and mistakes of an operator, the reliability makes come to be low. Therefore as using the telemetering control system, it improves a productivity and a reliability of the HDTV SMPS. In the developed system, electrical signal is measured from aging system, and converted into the digital signal. Also the telemetering control system is composed of many units - telemetering control units for collecting the data, data relay units for the digital transmission service, data division for the multichannel realization.
임선교 ( Sun Gyo Lim ),김정은 ( Jeong Eun Kim ),이종우 ( Jong Woo Lee ),이동훈 ( Dong Hun Lee ),임승관 ( Seung Kwan Lim ),박인휘 ( In Whee Park ),조현경 ( Hyeon Kyeong Cho ),김흥수 ( Heung Soo Kim ),신규택 ( Gyu Tae Shin ),임현이 대한신장학회 2003 Kidney Research and Clinical Practice Vol.22 No.1
Anti-glomerular basement membrane antibody mediated rapidly progressiv glomerulonephritis is a rare autoimmune disease. It is characterized by acute renal failure and crescentic glomeruli with linear immune deposits along glomerular basement membrane mediated by anti-GBM antibodies. We report a case of a sixty-years-old man with generalized edema and hematuria. On admission, BUN/Creatinine was 118/19.6 ng/dL, Hb was 10.2 g/bL. On urinalysis, protein was 3+, and many RBCs were found. Renal biopsy specimen which contained 8 glomeruli showed active cellular crescent formation in all glomeruli. On immunofluorescent staining specimen, there were 4 glomeruli which showed strong IgG linear staining along the glomerular basement membrane and mild C3 & Ciq deposit along the capillary walls. The titer of anti-GBM antibody was 123 EU by ELISA (normal : <10 EU). We treated with high dose of corticosteroid and plasmapheresis, but renal function was not recovered even after 3 months of hemodialysis.
지속적정정맥투석요법과 지속적정정맥여과투석을 사용하는 핍뇨 환자에서 vancomycin의 약동학적 변수 관찰
박인휘 ( In Whee Park ),이선아 ( Sun A Lee ),임승관 ( Seung Kwan Lim ),유수경 ( Su Kyong Yu ),장은정 ( Eun Jung Jang ),문은준 ( Eun Joon Moon ),황주안 ( Joo An Hwang ),김흥수 ( Heung Soo Kim ),신규태 ( Gyu Tae Shin ) 대한신장학회 2010 Kidney Research and Clinical Practice Vol.29 No.5
목적: 지속적 신대체요법이 사용되고 있는 환자들에게서는 vancomycin 치료가 필요한 경우가 흔하지만 연속적 정정맥 혈액투석 (continuous venovenous hemodialysis, CVVHD) 또는 연속적 정정맥 혈액여과투석 (continuous venovenous hemodiafiltration, CVVHDF)을 받고 있는 국내 환자를 대상으로 한 약동학적 연구는 부족한 실정이다. 이에 저자들은 이러한 환자들에게서 vancomycin 의 약동학적 변수에 관하여 연구 했다. 방법: 2008년 1월 1일부터 2009년12월31일까지 CVVHD 또는 CVVHDF 치료를 받고 있고 핍뇨가 있는 환자 중 vancomycin이 항정 상태에서 혈중 농도가 측정된 23명 35예를 대상으로 일반적 특성과 약동학적 지표를 분석했다. 결과: CVVHD가 사용된 8예와 CVVHDF가 사용된 27예에서 분석이 가능 했다 신대체요법의 정도는 CVVHD군에서 17.7±4.9 mL/h/kg였고 CVVHDF군에서는 32.1±3.9mL/h/kg였다 (p=0.000). Vancomycin의 청소율은 CVVHD군에서 16.4±3.8mL/min CVVHDF에서는 16.4±3.8 mL/min, CVVHDF에서는 21.6±5.1mL/min 였다. (p=0.007). Vancomycin의 체내 제거율과CVVDH와 CVVHDF의 배액 속도간에는 의미 있는 비례 관계가 있었다. (CVVHD; r2=0.745, p=0.012, CVVHDF; r2= 0.452, p=0.000). 결론: CVVHD와 CVVDHF는 체내로 투여된 vancomycin을 효과적으로 청소시키고 있었고 vancomycin의 청소율은 지속적 신대체요법의 정도에 비례하였으므로 vancomycin 투여 용량 결정시 이를 중심으로 약동학적 관련 요소가 고려되어야 한다. Purpose: Critically ill patients receiving continuous renal replacement therapy are susceptible to infection with methicillin-resistant bacteria, which require treatment with vancomycin. However, there are limited reports regarding vancomycin pharmacokinetics in the continuous venovenous hemodialysis (CVVHD) and continuous venovenous hemodiafiltration (CVVHDF). We performed this study to investigate the pharmacokinetics of vancomycin in oliguric patients receiving CVVHD and CVVHDF. Methods: Data at steady-state obtained as part of our routine drug monitoring of vancomycin therapy in critically ill adult oliguric patients undergoing CVVHD or CVVHDF, retrospectively. Data were available for 35 cases of 23 patients assessed for 2 years. We analyzed the pharmacokinetic parameters of these cases. Results: 8 cases on CVVHD and 27 cases on CVVHDF were available. The mean intensity of CVVHD was 17.7±4.9 mL/hour/kg and that of CVVHDF was 32.1±3.9 mL/hour/kg (p=0.000). The mean clearance of vancomycin was 16.4±3.8 mL/min in the CVVHD group and 21.6±5.1 mL/min in the CVVHDF group (P=0.007). The elimination of vancomycin correlated with the intensity of CVVHD and CVVHDF (CVVHD; r2=0.745, p=0.012, CVVHDF; r2=0.452, p=0.000). Conclusion: CVVHD and CVVHDF are effective for vancomycin elimination and there is a strong dependency of the vancomycin removal on the intensity of continuous renal replacement therapy. Strategies for individualization of vancomycin therapy in patients receiving CVVHD and CVVHDF are proposed.