단일 신경세포에서 한련초에 의해 유발된 이온전류에 대한 이차전령계의 조절작용

李忠烈 대한본초학회 1999 大韓本草學會誌 Vol.14 No.1

The effects of Ecliptae Herba on ion channels of single neuron employing nystatin perforated patch clamp under voltage clamp were investigated and the following results were obtained. 1. The magnitudes of ion currents caused by various concentrations of Ecliptae Herba compared to 10 exp (-5)M of glycine used as the control were recorded. As the result Ecliptae Herba, in neuron, recorded the ion currents depending on concentrations. With 10.0㎎/㎖ of Ecliptae Herba, the ion current equivalent to 206.30±32.70% of the ion current by the control was recorded and it was the maximal concentration. 2. Considered the ion current recorded by 3㎎/㎖ of Ecliptae Herba as the control, the following data were obtained. 1) 10^-4M of bicuculline suppressed the ion current of the control by 77.23±2.71%. 2) 10^-4M of tubocurarine repressed the ion current of the control by 57.86±3.44%. 3) When both bicuculline and tubocurarine were applied, the ion current of Ecliptae Herba was suppressed by 70.78±3.80%. Therefore, the ion current recorded from Ecliptae Herba is due mainly to the excitation of GABA_A receptor rather than the excitation of acetylcholine receptor. 3. Taken the ion current recorded from 1㎎/㎖ of Ecliptae Herba as the control, the following data were obtained. 1) D-AP5, a NMDA receptor antagonist, suppressed the ion current of the control by 12.12±3.10%. 2) CNQX, a non-NMDA receptor antagonist repressed the ion current of the control by 18.23±3.92%. This experiment had shown that Ecliptae Herba does not greatly affect glutamate receptors. 4. The magnitudes of th ion currents, when 0.5㎎/㎖ of Ecliptae Herba was applied on single neuron in two minutes interval, was reduced as the experiment proceeded. When a mixed solution of 10^-5M of forskolin, 10^-4M of IBMX and 10^-5M of dibutyl cAMP was applied for thirty seconds, the ion currents caused by Ecliptae Herba were reduced more sharply than the control. Hence, this experiment presented the fact that the magnitude of ion current of Ecliptae Herba was decreased as the concentration of cAMP in the neuron increased. 5. When Ecliptae Herba was pre-treated by 10^-7M of staurosporin for thirty seconds, the ion current was reduced more dully than the control. Therefore, in neurone, the ion channels activated by Ecliptae Herba were inhibited by cAMP-protein kinase.

제주경제의 국제화와 재외도민의 투자유치 여건조성

오충열 濟州大學校 地域社會發展硏究所 1993 社會發展硏究 Vol.9 No.-

군위지역 오이 시설 재배지의 토양특성 변화

이동훈,최충렬,김광섭,김평열,서정우,박만 경북대학교 농업과학기술연구소 2006 慶北大農學誌 Vol.24 No.-

군위군 오이재배지역을 정밀토양도를 이용하며 토양특성을 조사하구 군위군 노지 및 시설오이 재배지토양의 물리화학적 특성을 조사하여, 연작과 관행적인 토양관리로 인하여 저하된 토양의 이화학적 특성을 오이재배에 적합한 토양으로 개량하기 위한 기초자료로 이용하고자 토양조사를 실시하였다. 조사지역은 군위군 군위읍 외랑리 오이재배단지로서 주요토양통은 토양토에 나타난 단북통과 신정들이 가장 넓게 분포하였으며, 점토함량은 시설재배지내 토양의 경우 양토이었으며, 시설재배지의 외부 토양의 경우 23.8%로 높게 나타났다. 오이 재배지 토양의 화학적 특성 결과에 대한 오이재배지 토양의 적정범위와비교하여 보면 일반적인 화학적 성질에서 서는 유효인산의 함량이 적정범위보다 높은 것을 알 수 있으며, 치환성 양이온 함량은 시설재배지의 외부토양은 적정범위에 속하나 시설재배지 내부토양은 모두 높은 것으로 나타났으며, 최상부 토양은 매우 높으나 l0cm이하는 깊이에 따라 뚜렷한 차이는 없었다. 오이 재배지 토양 중 중금속 함량은 모두 기준치보다 높게 나타났는데, 구리의 함량이 시설재배지가 노지재배지보다 높게 나타났다. The soils of plastic film houses in which intensive cultivation takes place suffer from the serious problems such as severe salinity and accumulation of heavy metals etc. The objective of this research was to examine the change in soil properties with repeated cucumber cultivation under plastic film house at Gunwi-Gun area. The soils were classified mainly to Danbuk and SinJung series. Clay content is lower in the soils of plastic film house than in the field soil. Available P205 and exchangeable cations were accumulated at the level higher than the optimum range. The content of extractable heavy metals were higher in the soils of plastic film house than in those of the field. For optimum yield, much attention should be paied to the management of soils by the pre-soil survey.

항만 물류정보시스템의 효율성 제고

박홍균,이충열 순천대학교 지역개발연구소 1997 地域開發硏究 Vol.8 No.-

This paper general conditions of port information system Were explained. Especially concerned with information system service and EDI system, The purpose of this paper is to improve information system of Korean Maritime Information System(MIS) using the EDI/ED, CALS, INTERNET to find the system construction. The solution of these problems the estableshment of global INTERNET and secrity for system and other information system conected with MIS in one-stop service.

다중 프로세서 시스템상에서 Dragon 프로토콜을 지원하는 개선된 캐쉬 제어기 시스템

이광배,김현욱,유충열 明知大學校 産業技術硏究所 1993 産業技術硏究所論文集 Vol.12 No.-

In this paper, an improved cache controller system supporting Dragon protocol is designed and implemented that maintains cache coherence on multiprocessor system which share a system bus and a common main memory. The improvement of the proposed cache controller system, was caused by modifying operation method on processor write miss. It can reduce data traffic considerably on a shared system bus, eventually increasing system preformance.

저 품위 철광석을 사용한 식생용 투수 콘크리트의 중성화 및 제작에 관한 연구

은희창,이민수,배충열 강원대학교 산업기술연구소 2007 産業技術硏究 Vol.27 No.A

Recently produced concrete has a tendency to overcome environmental defects. Porous and planting Eco-concrete requires the neutralization process and enough void in concrete to contain water, to pass air freely, and provides necessary nutrients to vegetation roots. The biological environment in concrete is not suitable for planting because the concrete possesses strong alkali constituent of pH 11-13. This study evaluated the strength and serviceability of concrete as well as the chemical characteristics of concrete mixed by low-grade iron ore left in the abandoned mine and treated by Ammonium monohydrogen phosphate, (NH_(4))_(2)HPO_(4). Test variables include two kinds of coarse aggregates such as crushed stones and low-grade iron ore, the duration time and the period for neutralization treatment by Ammonium monohydrogen phosphate, (NH_(4))_(2)HPO_(4), and the proportion ratio of cement, blast furnace slag and silica fume.

임베디드 시스템에서 Mobile IP 프로토콜 구현

宋東勳,裵振勝,鄭燦赫,吳世德,李基源,劉忠烈,河載承,李光培,金玄郁 명지대학교 산업기술연구소 2005 産業技術硏究所論文集 Vol.24 No.-

With rapid growth of the internet, need for the mobile communication networks is increasing. In this paper, we implement and test Mobile IP Protocol in Embedded System. Our Mobile IP-based testbed consisted of two sub-networks and each sub-network was configured to operate independently through use of router. To satisfy integrated wired/wireless network model established on the testbed design and show generality of the testbed, we implemented mobile nodes, home agent, foreign agent and router on the basis of Linux operating system. As the results of the evaluation, we confirmed that mobile nodes operated properly according to Mobile IP Protocol.

New Public Values and Norms in Late Nineteenth Century Korea: Reformist Intellectuals` Visions of a Post-Confucian Society

( Choong Yeol Kim ) 성균관대학교 동아시아학술원 2013 Sungkyun Journal of East Asian Studies Vol.13 No.2

This paper will explore the historical context of the Korean reformist intellectuals` adoption of new public values and norms in the late 19th century. Most students of Korean political thought of the time argue that the reformists` reception of the new values and norms was caused by external factors, that is, the coming of the West and the subsequent destabilization of the traditional East Asian international order. However, they have failed to find the mechanism connecting the changes in the international environment and the reformists` adoption of new values and norms. This study looks for the mechanism in the change in the reformists` way of viewing the world. The reformists supported modern values and norms, like man`s innate rights, increased liberty and equality for the common people, and the rule of law, not because they are normatively right or superb, but because they understood Western wealth and power as the result of the adoption of these values and norms. That is to say, they assessed the world on the basis of empirical observations. This factual view of the world led them to construct new conceptions of human beings and government. Through the new ideas of values and norms, human beings, and government, they intended to establish a new society. This indicates that, at least in the value system of the reformists, there was a paradigm shift in that era. However, this shift was not entirely the result of Western influences at the time because sirhak scholars in Choson`s Confucian tradition had already developed this perspective of the world in the 18th century. In this respect, there is continuity between the sirhak scholars and the reformists.

현대 한의학의 이해

이충열(Choong Yeol Lee) 한의병리학회 2010 동의생리병리학회지 Vol.24 No.5

항공특송산업의 전략과 아태지역의 항공특송시장 분석

예충열 ( Choong Yeol Ye ) 한국항공경영학회 2003 한국항공경영학회지 Vol.1 No.1