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김성민,이종호,김남열,안강민,최원재,최시호,차미주,이주영,황순정,장정원,명훈,최진영,서병무,정필훈,김명진 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.4
Schwann cells(SCs), an important component of the peripheral nervous system, intract with nerous to mutually support growth and replication for the peripheral nerve regentation. Recently, ading SCs to the lumen of guidance channel is widely tried to improve regeneration or to make regeneration possible over otherwise irreparable gaps. however, it is not easy to isolate and multiplicate SCs as much as enough to help the axonal regeneration. For the allogeneic SCs source for tubular nerve guidance, we developed a little bit improved technique of harvesting and multiplicating SCs. by culturing dispersed dorsal root ganglia in specially designed medium with growth factors and serial processing, we repeatedlly generate relatively homogenous SC cultures. Our technique was compared with other methods of literature using immunostaining methods such as GFAP, S100, BDNF and the total SC count assessment at different time interval after primary culture.
Chlorpromazine이 백서 해마에서 전기경련 충격에 의한 MAPK 타이로신 인산화에 미치는 영향
주연호,정성훈,전송희,강웅구,김용식,김상욱,박주배 大韓神經精神醫學會 1997 신경정신의학 Vol.36 No.2
Object : In order to examine the interaction mechanisms of electroconvulsive shock(ECS) and antipsychotic drug at the level of molecular biology, we observed the effect of chlorpromazine pre-treatment on the activation of mitogen activated protein kinase(MAPK) induced by electroconvulsive shock(ECS) in rat hippocampus Method : Male Sprague-Dawley rats were divided into 2 groups. To the experimental group chlorpromazine(20㎎/㎏) was given intraperitoneally, and to the control distilled water was given instead. Thirty minutes later, ECS was given and the hippocampus was dissected out 2 minutes thereafter. Immunoblotting with antiphosphotyrosine antibody was carried out, and the signal intensity at 42kDa band was quantitized using densitometer. The obtained result was compared by student t-test between the experimental and the control group. The absolute amount of MAPK was measured by immunoblotting with anti-MAPK antibody. Result : The tyrosine phosphorylation of MAPK reached peak at 2 minutes after ECS. However, in the chlorpromazine pre-treated group, the peak level of MAPK tyrosine phosphorylation was significantly attenuated(t=-3.12, df=14, p=0.008) compared to the control. In contrast to this, the absolute amount of MAPK did not differ between the pretreated and the control group. Conclusion : Chlorpromazine attenuated the tyrosine phosphorylation of MAPK by ECS. This finding seems to be related to the fact that chlorpromazine pre-treatment changed the cfos expression by ECS in rat brain. Antipsychotic drug and ECS might interact at the level of MAPK signal transduction system, and this might explained the observed synergistic effect of two treatment modality.
Generalized variational inequalities on H-spaces
김훈주 대불대학교 1995 論文集 Vol.1 No.2
위상선형공간의 볼록공간집합의 개념을 일반화하는 연구가 KKM 이론, 부동점이론, 일치점이론등에서 매우 활발하였다. 그 중 Horvath에 의해 도입된 H-공간상에서 여러가지 변분부등식을 얻었다. 이 변분부등식은 Ding 과 Tan, Kim 과 Tan, Park Browder 등의 연구를 일반화한 것이다. In this note, we prove some variational inequalities which generalize Ding and Tan [DT], Kim and Tan [KT], Park [P2] and Browder [Br].
姜周勳,鄭郁泳 관동대학교 경영경제연구소 2001 경영논집 Vol.20 No.-
최근 제조산업의 특성을 반영하는 산업별마크업, 생산요소가격, 기술계수, 요소분배율 등 많은 자료들이 산업별로 측정, 추정되었다. 이러한 자료들은 일반적으로 시계열의 특성인 단위근을 포함하고 있어 각 변수의 인과관계를 분석하는 회귀모형을 추정하거나 상관분석을 하는 경우 허구회귀와 허구상관을 나타내는 경향이 있다. 본 논문은 18개 제조산업에 관한 산업별 시계열자료들의 단위근 검정을 통하여 자료의 특성을 밝히고 있다. 가격시계열과 생산함수 시계열은 생산성시계열과 분배율 시계열보다 상대적으로 단위근이 적게 존재하는 것으로 나타났다. 단위근이 산업전반에 걸쳐 심각하게 존재하는 시계열로는 자본의 평균생산성, 국내중간재의 평균생산성, 총요소생산성, 마크업, 자본분배율, 국내중간재 분배율, 해외중간재가격지수 등을 언급할 수 있다.
姜周勳,鄭郁泳,盧敬來 관동대학교 경영경제연구소 2001 경영논집 Vol.20 No.-
마크업의 결정요인은 가격과 비용의 두 가지 측면에서 고려해 볼 수 있다. 본 논문은 비용 측면에서 생산요소가격의 변화가 마크업 결정에 주요 요인임을 1970∼1995년 기간에 걸쳐 실증분석을 하였다. 대부분의 제조산업에서 마크업과 요소가격은 상호 -의 상관관계가 존재하는 것으로 실증 분석되었다. 특히 1980년대 후반부터 요소가격의 변화(실질임금 상승, 환율의 변화, 해외원자재 가격의 상승, 이자율의 변화)는 산업의 특성에 따라 전반적으로 산업별 마크업을 낮추는 결과를 가져왔다.
서주환,김도경,中山敬一,변성진,이상훈 韓國植物·人間·環境學會 1998 인간식물환경학회지 Vol.1 No.2
This study was to examine the latent heat flux of human's body to verify the microclimate of the tree shade and the amenity of that, estimating the microclimate of inside and outside of Diospyros Kaki Thunb during summer like a high temperature. The place where this study was examined was the Faculty of Horiculture, Chiba University in Japan. As the results, the factor of climate which was appeared with a wide difference was the solar radiation and the temperature of ground surface. On the contrary, the difference of the air-temperature and the humidity was not appeared greatly. And then, the surface heat flux of arm which showed the amenity from the inside and the outside of tree shade had lots of outgoing degree inside of tree shade, on the contrary, lots of incoming degree from the outside of tree shade.