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.

풀꽃 하나에 대한 소소한 생각 외 1편

김성춘 계간 서정시학 2021 서정시학 Vol.31 No.1

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.

[소식] 중국조선어술어표준화 사업위원회 설립

김성춘 길림성민족사무위원회 1996 중국조선어문 Vol.83 No.-

방어진 일출 외 2편

김성춘 오늘의 문예비평 1997 오늘의 문예비평 Vol.- No.-

Comparison of Clinical Performance Between BacT/ Alert Virtuo and BacT/Alert 3D Blood Culture Systems

김성춘,이승준,김선주,조오현,박현웅,유성미 대한진단검사의학회 2019 Annals of Laboratory Medicine Vol.39 No.3

Background: BacT/Alert Virtuo (BioMérieux, Durham, NC, USA) is a recently developed blood culture system that includes functions of automatic registration, loading, and unloading of the blood culture bottles, as well as measurement of blood volume. We compared the performances between the BacT/Alert Virtuo and 3D (BioMérieux) blood culture systems. Methods: A total of 952 patients (1,904 sets) visiting an university-affiliated hospital in Korea for blood cultures were enrolled. Five milliliters of blood was added into each of the two aerobic (FA Plus) and two anaerobic (FN Plus) bottles of the Virtuo and 3D systems for a single set. Positive rate and time to detection (TTD) were compared between the two systems. Results: The positive rates were 8.3% and 8.4% in FA Plus bottles and 7.8% and 8.3% in FN Plus bottles, in the Virtuo and 3D systems, respectively (P >0.05). Median TTDs were shorter in the Virtuo than in the 3D system for all isolates (11.5 hours [N=305] vs 11.8 hours [N=318], P <0.001), Staphylococcus aureus (N=38; 14.3 hours vs 16.0 hours, P =0.021), and Escherichia coli (N=117; 10.4 hours vs 11.0 hours, P <0.001). Conclusions: The Virtuo has the potential to detect pathogens early in all bottle types. This might improve the prognosis of sepsis by allowing for implementation of expeditious management.

선박용 디젤엔진의 탄성지지계 설계에 관한 연구

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.

병원 임상 수련에 의한 119 구급대원의 병원전 평가 및 처치의 질 향상 효과에 관한 시범 연구

김성춘,이정훈,이의중,김경수,김유진,신상도,서길준 대한응급의학회 2006 대한응급의학회지 Vol.17 No.6

Purpose: This study was conducted to evaluate the short term effect of hospital-based clinical training for emergency medical technicians (EMTs) on improving the quality of prehospital assessment and intervention. Methods: Three EMTs-level 1 were assigned to a regional emergency medical center and trained as to a designed program with three months. Three EMTs alternatively ran to the scene during later two months. In order to compare the completeness and the appropriateness of prehospital assessment and intervention between trained and nontrained EMTs, we collected pre-hospital records and divided the subjects into a study group who were managed by trained EMTs and a control group who were managed by non-trained EMTs-level 1 (level-1 control) or EMT-level 2 (level-2 control). The completeness and the appropriateness were evaluated by three expert panel groups, each consisting of three emergency physicians, on the basis of the guidelines and professional opinion. In assessing intergroup agreement, weighted kappa values for inter-panel agreement were all above 0.4 except on one factor (k=0.28) Results: No significant difference existed in demographic findings between the study group (N=129) and the control (N=469). The study group showed significantly higher completeness (78.9%) than the level-1 (14.9%, p<0.001) or level-2 control group (9.8%, p<0.001) in their assessment of vital signs. The study group also scored significantly better for appropriateness than did the two control groups, both in evaluation of chief complaints and in prehospital management (p<0.001). Conclusion: The quality of pre-hospital assessment and intervention could be significantly improved through hospital- based EMT training, especially in the assessment of vital signs, appropriate evaluation of chief complaints, and prehospital intervention.

초교 교장 일년을 보내며

김성춘 한국교육과정평가원 2000 교육광장 Vol.6 No.-

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.