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중증 외상 환자의 골반골절에서 경피적 혈관 색전술과 Young과 Burgess 분류의 상관관계
차용한 ( Yong Han Cha ),설영훈 ( Young Hoon Sul ),김하용 ( Ha Yong Kim ),최원식 ( Won Sik Choy ) 대한외상학회 2015 大韓外傷學會誌 Vol.28 No.3
Purpose: Immediate identification of vascular injury requiring embolization in patients with pelvic bone fracture isn’t an easy task. There have been many trials finding indicators of embolization for patients with pelvic bone fracture. Although Young and Burgess classification is useful in decision making of treatment, it is reported to have little value as indicator of embolization in major trauma patients. The aim of this study is to find out Young and burgess classification on predicting vessel injury by analzyng pelvic radiograph taken from major trauma patients with pelvic bone fracture. Methods: Among major trauma patients with injury severity scores (ISS) higher than 15 who visited our emergency room from January 2011 to June 2014, 200 patients were found with pelvic bone fracture in trauma series and thus pelvic CT angiography was taken. Setting aside patients with exclusion criteria, 153 patients were enrolled in this study for analysis of Young and Burgess classification. Results: The most common mechanism of injury was lateral compression in both groups. There was no statistical significant difference in Young and Burgess classification (p=0.397). The obturator artery was the most commonly injured artery in both groups. Six patients had more than one site of bleeding. Conclusion: Prediction of transcatheter angiographic embolization using Young and Burgess classification in severe trauma patients is difficult and requires additional studies. [ J Trauma Inj 2015; 28: 144-148 ]
영산강 상류일부의 水質汚染에 관한 調査硏究 : 산동교를 중심해서
류일광,이치영,강영식,김관천 광주보건대학 1990 論文集 Vol.15 No.-
Water quality of Young San river was examined for 3 months from April 12, 1989. to Jun 12, 1989. For checking the water quality 4 sampling position were selected. The results we obtained are as follows. 1. The average for Young San river was 6.6∼7.4 of pH, 3.6∼8.7mg/ℓof Dissolved dxygen (DO), 18.67∼33.47mg/ℓof chemical oxygen demand (COD), 47.66∼250mg/ℓ of suspended solid (SS), 37.83∼114.66mg/ℓ of N-hexane abstraction maters, 5.16∼6.63mg/ℓ of BOD. 2. The monthly average for Young San river was 6.5∼7.5 pH,3.5∼10.4mg/ℓ of DO. 15.07∼48.90mg/ℓ COD, 6.2∼10.2 mg/ℓ of BOC, 2∼250mg/ℓ of SS. 2∼124mg/ℓ of N-hexane abstraction mater, in April, 6.2∼7.5 of pH, 3.5∼8.2mg/ℓ of DO, 2.4∼5.7mg/ℓ BOD, 18.21∼32mg/ℓ of COD, 16∼123mg/ℓ of SS, 9.5∼95mg/ℓ of N-hexane abstraction matter, in May 6.9∼7.5 of pH, 3.8∼7.50mg/ℓ of pH, 3.8∼7.50mg/ℓ of DO, 4.0∼5.8mg/ℓ of BOD, 18.23∼of COD, 123∼163mg/ℓ of SS, 102∼125mg/ℓ of N-hexane abstraction matter in Jun. 3. The sampling positions averag for Young San San river was 6.9∼7.5 of pH, 7.5∼10.4mg/ℓ of DO, 15.07∼22.8mg/ℓ of COD, 3.5∼6.2mg/ℓ of BOD, 2∼125mg/ℓ of ss, 2∼102mg/ℓ of N-hexane abstraction matter in posiction 1.7.3∼7.5 of pH, 6.0∼7.5mg/ℓ of DO, 46.25∼52.05mg/ℓ of COD, 2.4∼8.5mg/ℓ of BOD, 58∼123mg/ℓ of SS, 62∼120mg/ℓ of N-hexane abstration matter in position 2. 6.2∼7.3 of pH, of pH, 4.23∼6.7mg/ℓ of DO, 4.9∼7,9mg/ℓ of BOD, 18.23∼36.75mg/ℓ of COD, 89∼152mg/ℓ of SS, 75∼123mg/ℓ of N-hexane abstraction matter, in position 3, 6.5∼7.2 of pH, 4.0∼10.2mg/ℓ of BOD, 3.5∼3.82mg/ℓ of DO, 23.6∼52.32mg/ℓ of COD, 123∼250mg/ℓ of SS, 95∼125mg/ℓ of N-hexane abstraction matter in position 4.
Young-june Yoon,Cheol-soo Bae,Ho-sik Park 한국멀티미디어학회 2010 한국멀티미디어학회 국제학술대회 Vol.2010 No.-
The effective Young's modulus of a microfibril surrounded by water may be simply calculated by using the upper (Voigt) and lower (Reuss) bounds. The result is compared to the Young's modulus estimated by using the Steered Molecular Dynamics (SMD) (Zhang et al. 2007). Our result shows 9.2% difference from the result estimated by SMD, but the steps using these bounds are much simpler than SMD..
Young-Doo Kwon,Seong-Hwa Jun,Jin-Sik Han,Dong-Jin Lee 한국자동차공학회 2018 International journal of automotive technology Vol.19 No.1
In the automobile industry, the service life of gaskets is defined as the time until which a released gasket recovers 60 % of the original compression. It was observed that the recovery curves of gaskets were highly nonlinear at high temperatures, and relatively nonlinear at temperatures above the room temperature. However, it was also noted that the recovery curves of the gaskets at temperatures below room temperature exhibited linearity with respect to the ln(time). Automotive manufacturers demand gasket life criteria that exceed a specific time or the entire life of a car. In the case of gaskets used at lower temperatures, since materials encounter losses in its flexibility and conformability, the definition of service life specifying a 60 % recovery may not be sufficiently safe to eliminate possible leakages. In this study, new gasket life criteria that could be used at low temperatures were proposed. The new criteria were proposed based on the change in Young’s modulus of the gasket material in order to conserve the sealing capability.
Prices, Qualities, and Costly Information in a Search Model of Money
Kim, Young Sik 서울大學校 經濟硏究所 2005 經濟論集 Vol.44 No.3-4
This paper examines the implications of costly information for prices and qualities in a search model of money. Agents can acquire an inspection technology at a cost where incurring a higher cost permits quality to be recognized with higher probability. First, in contrast to the exogenous information structure, the equilibrium without lemons no longer exists. Second, in the constrained equilibrium where uninformed buyers get a zero net surplus from trade, average quality of output increases with the money stock since buyers choose to be better informed as the money stock increases. The price dispersion in terms of the premium for known quality increases with the money stock. As for the effects of inflation, buyers become better informed with inflation, which implies the larger premium for the known quality. In the constrained equilibrium, higher average quality and lower price of known quality with a positive inflation imply higher welfare relative to a zero inflation.
조재영,석종식,민병국,권정택,최덕영,황성남,김영백,박승원 중앙대학교 의과대학 의과학연구소 2002 中央醫大誌 Vol.27 No.1
Patients with spontaneous pontine hemorrhage very often develop setvere disturbances of consciousness,pupilary abnormalities, respiratory and motor. They have high mortality rate. Therefore, I analyzed the correlation between the Glasgow outcome scale(GOS)and clincial manifestations or computed tomographic(CT)findings in 48 patients with spontaneous pontine hemorrhage to clarify factors predicting the prognosis. I examined 48 Patients with spontaneous pontine hemorrhage; 33 males and 15 females, age 54.6±8.99(mean±S.D.;range 39 to 68)brought to our hospital between January 1995 and December 1999, retrospectively. Correlations between the clinical manifestations, CT findings and the GOS was assessed with multivariate regression analysis. The results were as follow: 1) Patients with the pontine hemorrhage were of 8.8% in those with intracerebral hemorrhage. The ratio of male and female was 33 to 15. The incidence of age is eqial to 40,50 and 60. Total mortality was 41.6%. 2) The poor prognostic factor were that; Glasgow coma scale(GCS)3∼8, irregular respiration. pupilary abnormality, quadriplegia, Brain CT typeⅠ(massive), hydrocephalus, extrapontine extension, Intraventricular hemorrhage(IVH). These clinical analysis should be useful in determining the level of care and future resuscitative efforts.
박현식,조영곤,박병철,김종욱,최희영,김종진,진철희,유상훈,기영재 大韓齒科保存學會 2004 Restorative Dentistry & Endodontics Vol.29 No.3
The purpose of this study was to evaluate the effect of immediate or delayed composite resin filling on dentinal microtensile bond strength (μTBS) after applied the adhesive. The coronal dentin of human third molars was exposed. Single-Bond or One-Step was applied on the dentin surfaces, and composite resin were constructed immediately (group 1) or 5 min., 10 min., 15 min., 20 min. and 30 min. (groups 2-6) after an adhesive was applied. The specimens were sectioned and made bar-shaped. Each surface area of them was about l ㎟. The RBS test was performed by EZ test. The results were analysed by One-way ANOVA and Tukey's test at 95 % significance level. The results suggested that the μTBS of Single-Bond to dentin was decreased when the composite resin was constructed 20 min. and 30 min. after Single-Bond was applied. But the μTBS of One-Step was not affected by delayed composite resin filling.