http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이경운,박철우,박준범,이승훈,신현준,박정호,문성옥 대한전자공학회 2007 電子工學會論文誌-SC (System and control) Vol.44 No.3
1550nm의 파장대를 이용하는 자동 위상보정 양자암호 시스템을 소개한다. 양자키 분배 시스템에서 자동위상보정된 양자키 분배를 위한 메인 컨트롤보드와 phase modulator를 제어할 수 있는 보드를 제작하였고, 단일광자검출기를 위한 dark count당 photon count, quantum key distribution rate()와 quantum bit error rate(QBER)값을 측정하였다. 이 시스템은 25km의 광섬유상에서 quantum bit error rate(QBER) 3.5%의 결과값을 얻었고, 이는 상용화가 가능할 것으로 예상된다. We present a auto compensating quantum key distribution system based on optical fiber at 1550nm. In the quantum key transmission system, main control board and phase modulation driving board are fabricated for auto controlling quantum key distribution(QKD). We tested the single photon counts per dark counts for a single photon detector, quantum key distribution rate() and the quantum bit error rate (QBER). Quantum bit error rate of 3.5% in 25km QKD is obtained. This system is commercially available.
응급기관내 삽관시 FentanyI-Midazolam 병용에 따른 심혈관 반응 및 혈중 Catecholamine 농도의 변화
이경운,조남수,정기호 조선대학교 부설 의학연구소 1999 The Medical Journal of Chosun University Vol.24 No.2
Background and Objectives: Endotracheal intubation is accompanied with various sympathetic stimulatory responses such as increased blood pressure and heart rate. Several clinical trials to reduce the increased cardiovascular responses by pharmacologic agents including vasodilators, calcium channel blockers, lidocaine, benzodiazepines, narcotics and adrenergic blockers, have been reported. The present study attempted to investigate the changes of blood pressure, heart rate and plasma concentration of catecholamines (norepinephrine and epinephrine) before and after endotracheal intubation. Materials and Methods: Sixty patients were selected randomly. They were divided into two groups as followings: Group I: Treated with diazepam (0.3mg/kg) (n=30) Group II: Treated with fentanyl (2.0μg/kg) and midazolam (0.02mg/kg) (n=30) The changes of systolic blood pressure(SBP), diastolic blood pressure(DBP), mean arterial pressure(MAP), heart pressure(HR) and the plasma concentration of norepinephrine and epinephrine were measured before and 1, 3, and 5 min after intubation, respectively. Results: In group II, SBP, DBP, MAP and the plasma concentration of norepinephrine and epinephrine were significantly decreased (p<0.05) as compared with those in group I. The heart rate also greatly decreased as compared with that of the diazepam-treated group (p<0.05). Adverse effects by the combination of fentanyl and midazolam were not observed. treated group (p<0.05). Adverse effects by the combination of fentanyl and midazolam were not observed. Conclusions: Taken together, these results suggest that the coadministration of fentanyl and midazolam during emergency endotracheal intubation may attenuate postintubation-induced cardiovascular responses.
林漢旭,金雄秀,李慶雲 江原大學校 産業技術硏究所 1985 産業技術硏究 Vol.5 No.-
The blast-induced ground vibrations is one of the most important factors which is considered to design blasting patterns in urban excavation. To compare with vibration level of different explosives, peak particle velocity of each explosive was measured. The results are summerized as follows. 1. Among the three kinds of explosives, the largest vibration was obtained from the gelatine dynamite, while the smallest was blasting of ammonium nitrate. 2. The vibration levels of ammonim nitrate and slurry explosive were smaller about 35%, 20% respectively than that of gelatine dynamite.