http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
李成允,金勝權 외 1인 空軍士官學校 1988 論文集 Vol.25 No.-
The use of an Incremental Dynamic Programming(IDP) for real-time flood control operation is investigated. The optimization model has been applied for the Namgang and Andong hypothetical flood control system in the Nakdong river basin. The objective of the operation is defined to minimize the maximum flow at the confluense of downstreams from the two reservoirs. The results are compared to the direct summation of the flood routing results from individual flood control simulation run. It shows that peak flow at the confluence is reduced markedly by reducing peak outflows from individual reservoirs and by balancing the time of the peak release between the two reservoirs.
이성윤 대한흉부심장혈관외과학회 1990 Journal of Chest Surgery (J Chest Surg) Vol.23 No.4
The complicated pulmonary emphysema including “Giant bullae” and spontaneous pneumothorax often involve both lungs, and controversy exists concerning which is the more rational means of surgical treatment-bilateral simultaneous operation or two staged operation. We report three cases of the complicated bilateral bullous emphysema and two cases of bilateral spontaneous pneumothorax treated through median sternotomy. We performed the ligation of bullae, bullectomy, cystectomy, wedge resection, and left lower lobectomy through median sternotomy. No technical problems were encountered through this approach, which provided maximum benefit with one operation In conclusions, median sternotomy may be appropriate for resection of emphysematous bullae, specially in a severe COPD patient who may be poorly tolerated the superimposed loss of respiratory function due to incisional pain, because median sternotomy permit bilateral exploration, minimal impairment of pulmonary function, simultaneous restoration of pulmonary function, less incisional pain than routine lateral thoracotomy.
이성윤 대한흉부심장혈관외과학회 1991 Journal of Chest Surgery (J Chest Surg) Vol.24 No.9
Infants born with TAPVR have a generally unfavorable prognosis, only a bout 20% surviving first year of life. In fact only about 50% survive beyond the age of 3 months, death occurring in the first few weeks or months of life. In 1991, we experienced 1 case of TAPVR of cardiac type in infant[2 months old age, W; 3.4kg] Repair was performed under the deep hypothermia with CPB, and continuous low-perfusion technique. The septum between enlarged coronary sinus opening and left atrium was carefully excised. A patch of pericardium was then sutured around the coronary sinus and ASD, so that the blood from the pulmonary veins and the coronary sinus was diverted in the left atrium. The postoperative course was uneventful except pneumothorax. The patient has been doing well on 6 months follow-up.
이성윤 白中央醫療院 2004 仁濟醫學 Vol.25 No.1
Aspirin use probably reduces the risk of myocardial infarction in men over the age of 50 years. For individual patients, the decision to initiate aspirin therapy should be based on a careful assessment of absolute risk. The absolute risk of major coronary events should be calculated as the Framingham risk score. This can easily be done in the physician's office with the use of an on-line or downloaded version of the scoring system (for example, that available at http://www.nhlbi.nih.gov/atpiii/calculator.asp?usertype=prof ). A suggested algorithm for making decisions about the use of aspirin therapy on the basis of predictions of absolute risk is presented in Figure 2. Patients with an estimated risk of coronary events of 1.5 percent per year of higher are, barring contraindications, good candidates for aspirin therapy, whereas those with a risk of 0.6 percent per year or less are probably not. Among patients with an intermediate level of risk -that is, 0.7 to 1.4 percent per year- other factors should be considered, including the preferences of the patient; treatment should be considered more seriously if there is adequately treated hypertension with target-organ damage, diabetes mellitus, or poor physical fitness.
Tsunami 스텐트를 이용한 경피적 관상동맥 중재술의 초기 및 6개월 관상동맥조영술 성적 : immediate and six-month angiographic results
이성윤 白中央醫療院 2004 仁濟醫學 Vol.25 No.1
The Tsunami stent is balloon expandable, stainless steel, tubular coronary stent whose design is based on a number of radial, diamond shaped cells joined by double connector. The aim of this prospective observational study was to examine the procedural, in-hospital, and long term clinical and angiographic outcomes of patients undergoing Tsunami stent. Thirty-nine consecutive unselected patients were treated by means of the implantation of forty-one Tsunami stents in forty-one coronary lesions. Most of the patients (89.8%) had unstable angina or acute myocardial infarction. The baseline lesion morphology was complex in 75.5% of cases, and the mean lesion length was 15.2 3.8 mm. The procedural success rate was 100%. Mean percentage diameter of the stenosis decreased after the intervention from 75.2 12.2% to 4.8 4.6%. The in-hospital major adverse cardiac event rate was 2.5% including one cardiac death. During the six-month follow-up, there was one more cardiac death and four subjects (8.1%) underwent target vessel revascularization. The six-month event-free survival rate was 87.1%. The angiographic restenosis rate was 11.8%: a focal or limited pattern (class Ⅰor Ⅱ) was found in 25% of cases, whereas the remaining 75% had a proliferative morphology (class Ⅲ or Ⅳ). In conclusion, this study indicates the good clinical and angiographic performance of the Tsunami stent system in consecutive unselected patients.
이성윤,김휘은,조윌렴,김영환,유상임 대한금속·재료학회 2015 ELECTRONIC MATERIALS LETTERS Vol.11 No.6
We report the greatly improved dielectric properties of CaCu3Ti4O12 (CCTO) films with a 60 nm-thick CaTiO3 (CTO) interlayer on Pt/TiO2/ SiO2/Si substrates. Both CCTO films and CTO interlayers were prepared by pulsed laser deposition (PLD). With increasing the thickness of CCTO from 200 nm to 1.3 μm, the dielectric constants (εr) at 10 kHz in both CCTO single-layered and CCTO/CTO double-layered films increased from ~260 to ~6000 and from ~630 to ~3700, respectively. Compared with CCTO single-layered films, CCTO/CTO double-layered films irrespective of CCTO film thickness exhibited a remarkable decrease in their dielectric losses (tanδ) (<0.1 at the frequency region of 1 - 100 kHz) and highly reduced leakage current density at room temperature. The reduced leakage currents in CCTO/ CTO double-layered films are attributable to relatively higher trap ionization energies in the Poole-Frenkel conduction model.