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Bradykinin 이 Guanethidine 전처치(前處置) 가토(家兎)의 혈압(血壓)에 미치는 영향(影響)
이덕희(Lee, D.H.),김기진(Kim, G.J.),박형경(Park, H.K.) 대한약리학회 1972 대한약리학잡지 Vol.8 No.1
It is well known that pharmacological actions of bradykinin are smooth muscle dilatation, increase in capillary permeability, accumulation and migration of leucocytes and inducement of pain. The most significant action of bradykinin is the dilatation of blood vessels. The responses of bradykinin (0.5ug/kg, i. v. injection) on blood pressure were observed before and after single i. v. administration of guanethidine (2mg/kg) in the rabbits. The result of experiment was as follows: In the rabbit pretreated with guanethidine, the depressor response of bradykinin was much pronounced in comparison with that of normal rabbit.
종단부 유속조건 변화에 따른 철도터널 내 정상상태 화재유동해석
이동찬(D.C. Lee),이덕희(D.H. Lee),정우성(W.S. Jung),박서현(S.H. Park) 한국전산유체공학회 2010 한국전산유체공학회 학술대회논문집 Vol.2010 No.5
In this study CFD(Computational Fluid Dynamics) analysis of the steady fire-driven fluid flow for the performance test of ventilation at railway tunnel between Heuksok and Nodeul Station from Seoul Metro 9 is performed. There were fans with exhaust and intake modes and each was installed at the middle and both ends of the tunnel. For this test, the pool fire source of methyl alcohol with 1.5MW and smoke generators were installed between the middle of tunnel and Heuksok Station. In this test, the smoke behavior from natural convection was observed for 10 minutes from the ignition of pool fire and then fans with intake-modes at both sides of Heuksok Station and exhaust-modes at the middle of tunnel and nearby Nodeul station were operated. In the analysis, the effect of fan-on with intake mode located in the opposite side of the tunnel nearby Heuksok Station on fire-driven fluid flow is studied on when the boundary conditions of fan-on at the tunnel between Heuksok and Nodeul Station are the same as test. FLUENT, a commercial CFD code, is used for this analysis.
인삼이 실험적 고혈압에 미치는 영향 및 그 기전에 관한 연구
조병헌(Cho, B.H.),이상복(Lee, S.B.),이덕희(Lee, D.H.),박철훈(Park, C.H.) 대한약리학회 1972 대한약리학잡지 Vol.8 No.1
Ginseng, the Korean medicinal radix, has been widely used in the Chinese medicine as well as in the folk remedies for many centuries. It is claimed from experience that ginseng exerts multiple therapeutic effects in a large variety of disorders. Despite of its popularity, the chemical analysis and pharmacological study of ginseng are not firmly established. Although there are some scattered reports of ginseng effects on blood pressure, there are few reports on hypertension especially. Recently, Lee & Cho (1971) reported that the administration of ginseng significantly supresses the production of renal hypertension. This study was undertaken to reevaluate the effect of ginseng on renal hypertension and to determine whether ginseng also supresses on neurogenic hypertension, and to clarify the mechanism of this antihypertensive effect. Male rats, weighing around 180 gm on an average were used. Renal hypertension was induced by Grollman s method under general anesthesia with 35mg/kg of pentobarbital sodium. Ginseng effect on blood pressure was observed on normal, renal hypertensive and neurogenic hypertensive rats respectively. Ginseng alcohol extract (40mg/kg) was administered daily subcutaneously from 3 days prior to producing hypertension. And in renal hypertensive rats, the effects of histamine and Avil on blood pressure were also observed. Histamine (0.05mg/kg) and Avil (0.025mg/kg) were also administered daily I.M. from 3 days prior to kidney-8-ligature. The results of the experiments are as follows: 1) No significant difference was observed in blood pressure between the normotensive control and ginseng-treated normotensive rats. 2) In renal hypertensive control, the mean blood pressure already was significantly elevated on 15th day and gradually elevated. The administration of ginseng significantly supresses the production of renal hypertension from 30th day as compared with control rats. 3) The mean blood pressure in neurogenic hypertensive control was average 143.1 mmHg on 7th day. On the other hand, in ginseng treated-neurogenic hypertensive rats, the mean blood pressure was average 125.5mmHg. The administration of ginseng significantly supresses the production of neurogenic hypertension as compared with control rats. 4) In renal hypertensive rats, the administration of histamine and Avil did not differ with control rats. 5) In ginseng-treated renal hypertensive rats, cholesterol contents of plasma, adrenal, kidney and spleen were slightly decreased.
김학범(H. B. Kim),이덕희(D. H. Lee),장용준(Y. J. Jang),정우성(W. S. Jung) 한국전산유체공학회 2011 한국전산유체공학회 학술대회논문집 Vol.2011 No.5
Recently, railroad long tunnels are increasing and growing longer due to topological feathers like a lot of mountain in Korea. But fire disaster of a long tunnel cause many people to injury and death. For that reason, at the early design stage of a long tunnel, risk assessment and mitigation measure of risk for satisfying tunnel safety are required According to the railroad facility safety standard (Korean MLTM Announcement No. 2006-395), risk assessment for railroad-tunnel fire should be performed when design stage. Therefore, various methods of risk assessment for tunnel fire have been studied and applied. In the paper, QRA(Quantitative Risk Analysis) for fire risk assessment by using CFD code is presented and the usefulness of CFD is discussed.
김학범(H. B. Kim),김치훈(C. H. KIM),이덕희(D. H. Lee),장용준(Y. J. Jang),정우성(W. S. Jung),김진곤(J. K. Kim) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
철도 승강장의 매점은 현재 신문판매대, 표준 간이매점, 간이매점(복권방)등의 형태로 운영되고 있다. 따라서 신문이나 잡지등은 쉽게 불에 붙기 때문에 화재의 발화원이 되며, 대구 지하철 화재사고와 마찬가지로 방화의 대상이 될 수 있다. 이에 본 연구에서는 실규모의 매점 화재 실험을 통하여 열방출율과 독성을 측정 분석하고 이에 대한 승강장 매점의 화재방재 요건을 마련코자 한다. Recently, a lot of newsstands and mini station-store are operated as a store at the platform of subway. But the papers and magazines which are main articles for sale could be as the source of fire ignitable because those kind of easy flammable. Therefore the newsstands could be the target for fire. In this paper, fire experiments were conducted to find out characteristics and to plan the fire-safety for Newsstands and Mini station-stores fire
화재모사전용 FDS code의 계산값을 이용하여 피난해석 BuildingEXODUS code의 피난의 환경조건 파일을 생성하는 프로그램(FDS2EXODUS) 개발
김학범(Kim, H.B.),장용준(Jang, Y.J.),정우성(Jung, W.S.),박원희(Park, W.H.),이덕희(Lee, D.H.) 한국화재소방학회 2009 한국화재소방학회 학술대회 논문집 Vol.2009 No.춘계
본 논문에서는 피난해석에 사용되는 BuildingEXODUS code의 HAZARD에 피난의 환경 조건으로서 화재모사전용 FDS code의 계산결과를 직접 피난의 환경조건으로 생성하는 프로그램 개발 내용을 다루었다. 계산결과의 변환과정에는 수치기법이 적용되었으며, FDS의 Single Block 또는 Multi-Block Meshes에도 적용이 가능하도록 하였다. 본 프로그램의 개발로 피난해석 수행 시 대규모의 화재해석데이터의 입력의 편리성을 높이고, 화재에 대한 피난 해석 과정을 단축하게 되었다. In this paper shows the development of the Program(FDS2EXODUS) for Generating Hazard condition file of BuildingEXODUS code based on the FDS Fire-simulation Data. The program were applied with numerical method to translate from FDS to BuildingEXODUS. Using both single or multi block meshes of FDS get to be possible. For application of fire effect, the fire data were loaded directly to BuildingEXODUS in the case of FDS code with using this Program(FDS2EXODUS). It was very convenient to input to BuildingEXODUS and could be reduced the procedure of egress simulation from fire disaster.