• Proceedings of the Korean Society of Applied Pharmacology
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• 1993.04a
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• pp.151-151
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• 1993

A. 1. 중추신경계에서 일어나는 병변들, Alzheimer's disease, Parkinsonism 및 정상적인 노화현상들을 구명하는 연구의 일부분으로 뇌내의 신경세포들의 세포내물질의 변화를 관찰하고자, 이 실험을 시도하였다. 2. 중추신경계에 작용하는 각종 약물들의 작용기전, 그리고 부작용을 구명하여 그의 예방 및 치료방법을 모색하고자 한다. B. 1.Preparations: rat brain cytosol ＆ culture cell-line(NIE-115) 2. Method: NO or NOS의 생성함량을 직접측정 할 수 없으므로 간접방법을 택한다. [3Hlarginine 및 [3Hlguanine을 Preparation에 incubation시켜 일정한 시간 후 생성되는 [3H]citrulline 또는 cyclic GMP을 scintillation counter로 측정하여 그 함량으로 NO or NOS의 생성을 측정한다.

• Proceedings of the Korean Information Science Society Conference
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• 2011.06d
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• pp.41-43
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• 2011

이 논문은 공개 소프트웨어 기반의 로봇 학습시스템을 구축하기 위해 필요한 교육용 로봇, 학습관리시스템, 로봇콘텐츠 저작도구, 로봇 에이전트의 기능을 정의하고 있다. 특히 공개SW 학습관리시스템의 기능을 비교분석하여 로봇과 연계할 시스템을 제안하고 있다. 공개SW 학습관리 시스템은 지니(GeNIE)와 무들을, 화상강의 시스템은 DimDim을 추천하고, 로봇 콘텐츠 저작도구는 OPRoS기반의 로봇 콘텐츠 시뮬레이터와 연계되는 형태를 권한다.

• Proceedings of the Korean Nuclear Society Conference
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• 2002.05a
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• pp.56.2-56
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• 2002

• Proceedings of the IEEK Conference
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• 2000.07a
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• pp.541-544
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• 2000

This paper presents a multitier GIS architecture to adapt to large-scale distributed networks and to improve data transfer performance with intelligent caching technique. We design this system using UML based on object-oriented analysis. We show some advantages in our proposed system against the ordinary GIS, in special, suitability to distributed networks.

• Structural Engineering and Mechanics
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• v.8 no.6
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• pp.547-560
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• 1999

In this paper an asymptotic iteration method is adopted to analyze non-linear free vibration of reticulated circular plates composed of beam members placed in two orthogonal directions. For the resulting linear ordinary differential equations in the process of iteration, the power series with rapid convergence has been applied to obtain an analytical solution for non-linear characteristic relation between the amplitude and frequency of the structure. Numerical examples are given, and the phenomena indicating hardening of such structures have been presented for the (immovable or movable) simply-supported and clamped circular plates.

• Proceedings of the IEEK Conference
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• 2000.07b
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• pp.1107-1110
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• 2000

This paper proposes a selection procedure of geospatial data for location guidance map generation system. The selection procedure requires some targets appointed by users as input data and outputs generation. The procedure is embedded in a prototype of object-oriented GIS. We show sample maps generated by the system.

• Journal of the Korean Mathematical Society
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• v.49 no.4
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• pp.765-778
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• 2012

We construct a symmetric finite volume element (SFVE) scheme for a self-adjoint elliptic problem on tetrahedron grids and prove that our new scheme has optimal convergent order for the solution and has superconvergent order for the flux when grids are quasi-uniform and regular. The symmetry of our scheme is helpful to solve efficiently the corresponding discrete system. Numerical experiments are carried out to confirm the theoretical results.

• The Korean Journal of Mycology
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• v.47 no.2
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• pp.121-124
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• 2019

An endophytic fungus, Rhizosphaera pini strain NIE7426, was isolated from the sub-alpine coniferous tree Abies nephrolepis in Mt. Nochu of Gangwon Province. It was characterized by macroscopic and microscopic features, as well as the internal transcribed spacer (ITS) 1, 2 and 5.8S sequences. All morphological and molecular features support the first recognition of this taxon in Korea. In addition, this study adds A. nephrolepis as a host plant R. pini.

• Proceedings of the PSK Conference
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• 2002.04a
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• pp.166.1-166.1
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• 2002

• Korean Journal of Environmental Biology
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• v.37 no.3
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• pp.249-259
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• 2019

We investigated the tritrophic interactions associated with elevation and openness of dwarf bamboo (Sasa quelpaertensis Nakai) vegetation on Mt. Halla, Jeju Island. The interactions between dwarf bamboo plants and its consumers were investigated in four study sites with and without canopy along the elevation gradient. The ecological traits of dwarf bamboo included leaf area, water content, nitrogen content and carbon/nitrogen ratio. Arthropods were collected using a sweeping net and they were later divided into three different feeding guilds: herbivorous, omnivorous and predators. We found that the elevation and canopy openness on dwarf bamboo vegetation was positively related and as elevation increased and canopy opened, the bamboo densities and C/N ratio increased. However, the leaf area, water content and the N content decreased. The study sites with closed canopy indicated a relatively higher species richness of arthropods including insects. We concluded that the tritrophic interactions is closely related to the ecological characteristics of the dwarf bamboos, which is affected by elevation and canopy openness.