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빌라조경 설계사례에 관한 연구 : Case Study of Jang-chung Dong Villa
김동찬,이윤수,유재설,박익수,임동민,임상재 경희대학교 부설 디자인연구원 1998 예술· 디자인학연구 Vol.1 No.1
The goal of this study is to propose a plan for the Jang-Chung Dong Villa. This Villa is located on Jang-Chung Dong Jung-Gu, Seoul. And, this place is where high-class residential area. This Site area covers about 1925.6m². This base idea of this plan is to provide a community of dwelling houses with identity and amenity in outdoor spaces in order to create the high-class environment of outdoor spaces. Design principles are established as follow; to make spaces for flexibility in the garden related activities, to provide many chances to contact with nature, and to feel pride in the villa life.
급성전골수성백혈병에서 백혈구성분채집술에 이은 치명적인 뇌출혈 2예
오윤정,박소윤,김윤정,한동석,김현수,최진혁,남동기,임호영,김효철,주희재 아주대학교 의과학연구소 1998 아주의학 Vol.3 No.1
The aim of this study is to report 2 cases of acute promyelocytic leukemia who died from intracranial hemorrhage following leukapheresis and to provide proper preventive measures against hemorrhage following leukapheresis. From 1994 to 1997, a total of twenty-six patients with leukemia underwent leukapheresis to control hyperleukocytosis at Ajou University Hospital. Two patients with acute promyelocytic leukemia received all-trans retinoic acid but developed drug-induced hyperleukocytosis. Shortly after leukapheresis, they died from intracranial hemorrhage. The risk factors for fatal hemorrhage are thought to be coexisting disseminated intravascular coagulation(DIC), thrombocytopenia aggravated by leukapheresis, exacerbated coagulopathy related to mechanical trauma through leukapheresis and the excess use of citrate during leukapheresis. To reduce the risk of the bleeding associated with leukapheresis, it is necessary to replace platelet sufficiently before and after leukapheresis and to give calcium to correct coagulopathy induced by excess citrate which is used as anticoagulant as well as the correction of disseminated intravascular coagulation.
Metoclopramide가 휜쥐의 血壓에 미치는 影響
임동윤,최동준,김규형,최철희,박재윤,문재규,김문석,황두환 中央醫學社 1988 中央醫學 Vol.53 No.9
Influences of metocopramide (MCP), which is a seletive dopaminergic antagonist, on blood pressure of the rat and its mechanism of action were investigated in the present study. MCP administered into a femoral vein of the rat caused markedly a dose-related fall in blood pressure followed by secondary transient pressor response. The depressor action evoked by MCP was not blocked by pretreatment of atropine or chlorisondamine, while the pressor action was inhibited significantly. Prazosin treatment reduced markedly both of depressor and pressor induced by MCP. MCP-evoked pressor action was not affected by clonidine, but the depressor response was attenuated significantly. Debrisoquin treatment made the inhibited response to MCP-induced pressor response, while did not affect the depressor action. Both of pressor and depressor responses evoked by MCP were not influenced by cyproheptadine. The hypertensive activity induced by nor epinephrine was weakened markedly by the infusion of MCP (1.50 mg/kg/30min.), but the pressor action evoked by dopamine not affected. These experimental data suggest that MCP produces biphasic responses (depressor and pressor) in blood pressure of the rat, and that the hypotensive activity is due to adrenergic alpha-receptors blockade, and that pressor activity is exerted through stimulation of cholinergic nicotinic receptors in autonmic ganglia.
균일가열법으로 제조한 반용융 A390합금의 미세조직 및 성형성
임수근,윤병은,장동훈,엄정필,김득규 慶尙大學校生産技術硏究所 1997 生産技術硏究所論文集 Vol.13 No.-
Microstructure of hypereutectic Al-17wt.% Si alloy, fabricated by mechanical stirring and by reheating at semi-solid state, was investigated by optical microscope. Flow behavior semi-solid metal also was investigated at diffentent mould temperatures 280℃, 290℃ and 300℃ . Size of silicon particles were increased over 100㎛ durig solidification as a result of stirring. It is considered as microstructural coarsening by bonding between neighbouring primary silicon particles during stirring of slurry. In case of reheating at semi-state, however, primary silicon particle was not increased at size of 40㎛ and nearly spherical aluminum solde particle also was improved when solid fraction was 0.7 at mould temperature of 300℃ than other conditions.
임수근,윤병은,장동훈,엄정필,김득규 慶尙大學校生産技術硏究所 1997 生産技術硏究所論文集 Vol.13 No.-
In this study, microstructure, size of primary α, solid fraction and hardness of A356 Al alloy were investigated. Semi-solid A356 alloys were obtained by semi-solid continuous casting apparatus consists of melting furnace, formation apparatus of granular primary α and continuous casting apparatus. Size of primary α and solid fraction were decreased with decreasing temperature, and with increasing volume of cooling water. At the cooling water temperature of 15℃ and cooling water volume of 18.2ℓ/min, the sizes of primary α phases were decreased up to 40㎛, and fraction solid was 0.68.
상악 절치부-토크에 의한 치아 이동과 응력 분포에 관한 유한요소법적 연구
윤현주,임용규,이동렬,조영수 대한치과교정학회 2005 대한치과교정학회지 Vol.35 No.2
본 연구는 상악 절치부에 active 토크가 가해졌을 경우, 교정력을 직접 받은 치아와 인접 치아의 반응을 알아보고자 상악 치아 및 치조골의 유한요소 모델을 제작하고, stainless steel, NiTi, TMA 세 종류의 각형 호선을 육면체 요소로 모델링하여 유한요소 모델을 완성하였다. 호선이 브라켓에 삽입되었을 때 브라켓에 발생하는 반력과 모멘트를 구하였고, 이것을 유한 요소 모델에 적용하여 각 치아의 변위와 응력 분포를 측정하였다. 브라켓에 발생하는 반력은 근원심 방향과 협설 방향으로의 힘은 0에 가까우며, 중절치, 측절치, 견치의 브라켓 근심측에서는 정출력이 원심측에서는 압하력이 발생하였다. 힘과 모멘트의 크기는 측절치에서 최대였고, 중절치, 견치 순으로 감소하였고, 소구치 부위와 대구치 부위에서는 급격히 감소하였다. 중절치와 측절치는 치관 협측, 원심 경사 이동과 압하를 보였으며, 견치는 치관 설측 원심 경사와 정출을 보였고, 제1소구치는 치관 설측 경사이동을 보였다. .019×.025 SS을 사용하여 상악 절치부에 토크를 부여하는 경우에는 측절치에 과도한 힘이 집중되므로, 임상에서 토크를 조절할 경우에는 NiTi나 TMA 호선을 사용하는 것이 바람직하리라고 생각된다. The purpose of this study was to investifate the stress distribtion in the periodontal tissue and the displacement of teeth when active torque was applied to the maxillary incisors by three-dimen-sional finite element analysis. A three- dimensional finite element model consisted of the maxillary teeth and surrounding periodontal membrane, .022×.028 Roth prescription bracket and stainless steel. NiTi and TMA rectangular ideal arch wires which were modeled by hexahedron elements. Applied active torques were 2, 5 and 10 degrees. The findings of this study showed that the reaction force acting on the bracket was the extrusion force on the mesial side of the incisors and canine and the intrusion force on the distal side of the incisors and canine.The amount of force and moment was greatest at the lateral incisor. When active anterior labial crown torque was applied, labial crown and distal tipping and intrusion of the incisors took place, and lingual crown distal tipping and extrusion of the canin occured. An excessive force was concentrated on the lateral incisor, when the stainless steel wire was used. NiTi or TMA wire os desirable for torque control.
高血壓을 일으키는 아세트 알데하이드의 作用에 關한 硏究 : 副腎에서 카테콜아민의 分泌에 對하여
林東潤,文宰奎 朝鮮大學校 附設 醫學硏究所 1986 The Medical Journal of Chosun University Vol.11 No.1
Authors tried to investigate whether acetaldehyde causes release of catecliolaniiiies(CA) from Liie isolated perfused rabbit adrenal gland or not and to elucidate its mechanism or action. Acetaldehyde (300㎍) injected into adrenal vein produced the marked secretion of CA. Acetaldehyde-induced secretory effect of CA was not affected by treatment of atropine or chlorisondamine and even by atropine plus chlorisondamine. Release of CA evoked by acetaldehyde was not blocked by pretreatment with adenosine, but inhibited significantly by ouabain-treatment or calcium free Krebs solution. These results obtained suggest that acetaldehyde evokes release of CA from the isolated perfused rabbit adrenal gland by direct action, and that it may exert its hypertensive action partly through this mechanism.