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작약감초탕(芍藥甘草湯) 및 구성약물(構成藥物)이 진통(鎭痛)에 미치는 영향(影響)
이기옥,국윤범,윤용갑,Lee Ki-Ok,Kuk Yun-Beum,Yun Young-Gab 대한한의학방제학회 2003 大韓韓醫學方劑學會誌 Vol.11 No.1
This study was designed to elucidate the analgesic effects of Jakyakgamchotang and Radix paeinia, Radix Glycyrrhiziae which are the component of Jakyakgamchotang in mice. The analgesic effects were measured by the Whittle's method and hot plate method. The results were as follows ; After the administration of Jakyakgamchotang extrace, the frequency of writhing syndrome was significantly inhibited. After the administration of Radix paeinia extract, the frequency of writhing syndrome was significantly inhibited. After the administration of Radix Glycyrrhiziae extract, the frequency of writhing syndrome was significantly inhibited. After the administration of Jakyakgamchotang extrace, paw licking time and escape time were significantly prolonged. After the administration of Radix paeinia extract, paw licking time was significantly prolonged. After the administration of Radix Glycyrrhiziae extract, paw licking time was significantly prolonged. It is concluded that the analgesic effects of Jakyakgamchotang were found to be more effective than Radix paeinia and Radix Glycyrrhiziae.
원각사지 10층 석탑을 이용한 탑 다라니 콘텐츠 제작 및 활용
이기옥(Ki Ok Lee),박성은(Sung Eun Park),이용규(Yong Kyu Lee) 한국콘텐츠학회 2007 한국콘텐츠학회논문지 Vol.7 No.11
최근에 세계 콘텐츠 시장에서 문화 콘텐츠 산업의 역할이 중요해지고 있는 반면에 불교 문화재 콘텐츠시장은 아직 미비한 상태이다. 특히 한국에서는 대부분의 문화재가 불교 문화재임에도 불구하고, 문화재로서의 원형 보전이나 복원 및 디자인 작업에 많은 어려움이 있다. 따라서 본 연구에서는 원각사지 10층 석탑을 이용한 탑 다라니 콘텐츠를 개발함으로써 불교 디자인과 불교 문화재 콘텐츠 발전에 기여하고자 한다. 이를 위하여 먼저 원각사지 10층 석탑을 이용한 탑 다라니를 디자인하고, 이를 이용한 탑 다라니 콘텐츠를 설계하고 구현한다. 본 논문에서는 제안한 탑 다라니 콘텐츠를 사용함으로써 기존의 불교 문화재 콘텐츠 활성화 문제를 개선할 수 있도록 한다. While the cultural contents industry plays main role in global contents market recently, the market of Buddhist cultural property contents is still in insufficient state. Specially, despite most cultural properties is Buddhist cultural property in Korea, there is a lot of difficult problems in preserving, restoring and designing its prototype as cultural property. So, this research intends to contribute to the development of Buddhist design and Buddhist culture contents by developing the Pagoda Dharani contents using the Ten-storied Stone Pagoda on the Site of Wongaksa. The first thing is designing the Pagoda Dharani using the Ten-storied Stone Pagoda on the Site of Wongaksa. Also, using the Pagoda Dharani, we design and implement the Pagoda Dharani contents on the web. In this paper, by using the proposed the Pagoda Dharani contents, the previous activation problem of the Buddhist culture contents can be resolved.
이기옥(Lee Ki-Ok),유병규(Yu Byung-Gyu),최주엽(Choi Ju-Yeop),최익(Choy Ick),유권종(Yu Gwon-Jong) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.4
As the grid-connected photovoltaic power conditioning systems (PVPCS) are installed in many residential areas, these have raised potential problems of network protection on electrical power system. One of the numerous problems is an Islanding phenomenon. In this paper, active frequency drift (AFD) method, one of the anti-islanding analyzed by current magnitude compensation and calculation of RMS value of the output power.
DPLL을 이용한 능동적 단독운전방지를 위한 무효전력변동법
이기옥(Lee Ki-Ok),유병규(Yu Byung-Gu),유권종(Yu Gwon-Jong),최주엽(Choi Ju-Yeop),최익(Choy Ick) 한국태양에너지학회 2008 한국태양에너지학회 논문집 Vol.28 No.2
As the grid-connected photovoltaic power conditioning systems (PVPCS) are installed in many residential areas, these have raised potential problems of network protection on electrical power system. One of the numerous problems is an Islanding phenomenon. There has been an argument that it may be a non-issue in practice because the probability of islanding is extremely low. However, there are three counter-arguments: First, the low probability of islanding is based on the assumption of 100% power matching between the PVPCS and the islanded local loads. In fact, an islanding can be easily formed even without 100% power matching (the power mismatch could be up to 30% if only traditional protections are used, e.g. under/over voltage/frequency). The 30% power-mismatch condition will drastically increase the islanding probability. Second, even with a larger power mismatch, the time for voltage or frequency to deviate sufficiently to cause a trip, plus the time required to execute a trip (particularly if conventional switchgear is required to operate), can easily be greater than the typical re-close time on the distribution circuit. Third, the low-probability argument is based on the study of PVPCS. Especially, if the output power of PVPCS equals to power consumption of local loads, it is very difficult for the PVPCS to sustain the voltage and frequency in an islanding. Unintentional islanding of PVPCS may result in power-quality issues, interference to grid-protection devices, equipment damage, and even personnel safety hazards. Therefore the verification of anti-islanding performance is strongly needed. In this paper, improved RPV method is proposed through considering power quality and anti-islanding capacity of grid-connected single-phase PVPCS in IEEE Std 1547 ("Standard for Interconnecting Distributed Resources to Electric Power Systems"), And the simulation results are verified.
단독운전방지를 위한 능동적 주파수 변환기법의 출력전력 분석
이기옥(Lee Ki-Ok),최주엽(Choi Ju-Yeop),최익(Choy Ick),유권종(Yu Gwon-Jong),안진웅(An Jin-ung) 한국태양에너지학회 2009 한국태양에너지학회 논문집 Vol.29 No.6
Recently, as the grid-connected photovoltaic power conditioning systems (PVPCS) are installed in many residential areas, these have raised potential problems of network protection on electrical power system. One of the numerous problems is an Islanding phenomenon. In this paper, active frequency drift (AFD) method, one of the anti-islanding methods which is analyzed by current magnitude compensation and calculation of RMS value of the output power is proposed and verified by simulation.