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김성춘,이돈출,김의간 한국마린엔지니어링학회 1994 한국마린엔지니어링학회지 Vol.18 No.5
The installation methods of diesel engines in ships would be largely classified into two groups : one is the direct mounting system fixing engine directly into double bottom of the hull, and the other is the resilient mounting system having vibration absorbers between engine and ship body such as rubber plate to prevent shocks or vibration transmission. The direct mounting system is generally used for large-sized low speed diesel engines, because the resilient mounting system has difficulties in reducing the natural frequency of engine itself under normal speed. On the contrary, the resilient mounting system is often used for medium or high speed engines for marine propulsion and generator that have light weight and high revolution speed. Recently, it is even applied to engines having relatively low speed(300-400rpm) for fishing boats. Although many researches for the resilient mounting system have been carried out, many problems in applying these results directly to marine vessels because most of these have been used for automobiles. Up to now we have had to depend on the professional foreign company in design and the supply of parts for the resilient mounting system of marinediesel engines utterly. In preseut study, the exciting forces of engines effecting to resilient mounting were examined, and patterns of vibration and evaluation procedure for force transmission from resilient mounting to the body of hull were established. Also, these results were applied to the analysis of free and forced vibration for the rubber-type resilient mounting systems of marine diesel engines. Besides, after changing the various design parameters, such as locations, angles, dynamic characteristics and the number of resilient mountings, the influences on resilient mounting system were also examined.
새로운 스트레인 인가장치를 이용한 광섬유 링 레이저의 파장가변 특성
김성춘,장현수,이경식,Kim, Sung-Chun,Jang, Hyun-Soo,Lee, Kyung-Shik 한국광학회 2005 한국광학회지 Vol.16 No.1
광섬유 링 레이저의 출력파장 가변을 위해서 신뢰성있는 새로운 스트레인 인가장치를 제작하고 이 장치를 이용하여 파장가변 광섬유 링 레이저를 구현하였다. 제작된 광섬유 링 레이저의 출력파워는 -12 dBm이었으며, 선폭은 0.05 nm이었다. 새로운 스트레인 인가장치를 이용하여 광섬유에 8000 $\mu$ strain을 인가하였을 때 광섬유 링 레이저의 출력파장은 약 10 nm 가변되는 것을 확인 할 수 있었다. We fabricated a tunable fiber ring laser consisting of a novel strain device and fiber Bragg gratings. The lasing power and FWHM bandwidth of the optical fiber ring laser was -12dBm and 0.05nm respectively. The fiber ring laser was tuned as much as 10nm at a 8000.
Phalloides 증후군에서 혈역학적 보조를 위해 T-PLS를 사용한 1례
김성춘,김규석,서길준,Kim, Seong-Chun,Kim, Kyu-Seok,Suh, Gil-Joon 대한임상독성학회 2004 대한임상독성학회지 Vol.2 No.2
Phalloides syndrome has usually occurred after incidental mushroom ingestion. It is sometimes difficult to differentiate toxic mushrooms from edible ones, especially in lay person because of their morphological similarities. In Korea, Amanita virosa and Amanita subjunquillea have been reported as a cause of fulminant hepatic failure in mushroom poisoning (phalloides syndrome). We report a case of phalloides syndrome who came to death with fulminant hepatic failure even though we planned liver transplantation and used T-PLS(R) (Twin Pulse Life Support) for hemodynamic support while waiting for the donor.
과학영재교육원에 대한 학생과 학부모의 인식 및 요구도 조사 연구 : 강릉원주대학교 과학영재교육원을 중심으로
김성춘 한국과학영재교육학회 2009 과학영재교육 Vol.1 No.2
본 연구는 대학 부설 과학영재교육원에 입학하는 학생 및 학부모를 대상으로 과학영재교육원에 대한 인식, 영재교육의 필요성, 그리고 개인적 욕구, 기관⋅강사⋅수업에 대한 욕구를 조사하여 현 과학영재교육원의 교육과정과 방법을 고찰하고 향후 교육과정 개편에 도움을 주고자 함이다. 연구 결과, 학생 및 학부모 공통으로 영재들에게 우수하고 적합한 교육프로그램의 제공을 가장 기대하고 있으며, 여기에는 실험 위주의 수업 확대, 창의성 훈련 및 개별 관심에 대한 심화 학습의 욕구가 포함되어 있었다. 그러나 영재교육에 대한 정의나 교육 대상, 교육 기간, 강사 자질, 원하는 수업 내용 등에 있어서 학생 및 학부모간에 유의미한 욕구 차이가 있음도 확인할 수 있었다. 이는 향후 학생 및 학부모, 과학영재교육원간의 지속적인 소통 및 교류의 필요성을 시사한다.
Comparison of Blood Culture Parameters between 2 and 10 mL Aerobic Bottles from Patients with Sepsis
김성춘,김선주 대한임상미생물학회 2021 Annals of clinical microbiology Vol.24 No.3
Background: Blood volume is the most important parameter for an optimal blood culture;however, the effect of blood volume on blood culture is not clearly understood from patients withsepsis. Methods: Blood cultures were obtained from 1,049 patients (≥ 15 years old) who visited theemergency department (ED). Two sets of 20 mL each was collected from each patient, 12 mLof which was transferred to 2 and 10 mL FA Plus (aerobic) bottles (bioMérieux, USA) and theremaining into an FN Plus (anaerobic) bottle. Medical records were reviewed to confirm thediagnosis and clinical significance of the blood culture isolates. The positive rate and time-todetection(TTD) were compared between the 2 and 10 mL groups. Results: Among the 2,098 sets collected, 612 sets (29.2%) were excluded due to inadequate(either too much or too little) blood volume. The positive rate of clinically significant pathogenswas lower in the 2 mL group (6.1%) than in the 10 mL group (7.5%) (P = 0.003) among the 1,486sets. However, there was no significant difference in the positive rate (11.0% vs. 12.5%, P = 0.152)and TTD (15.7 hours vs. 14.2 hours, P = 0.299) among the 585 (39.4%) patients with sepsis. Conclusion: The positive rate and TTD were similar between the 2 and 10 mL groups frompatients with sepsis who visited the ED, suggesting a high concentration of bacteremia in thisgroup. Therefore, a smaller blood volume should be carefully considered in patients with sepsis inthe ED.