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정진아,박은규,Jeong, Jina,Park, Eungyu 대한자원환경지질학회 2013 자원환경지질 Vol.46 No.4
본 연구에서는 캐나다 아사바스카 지역의 맥머레이층에 대한 3차원 지구통계 모사를 실시하였으며 모사 결과를 바탕으로 심부지열회수방법을 통한 경제적 산출 가능 지역을 가늠하고자 하였다. 비투멘의 효율적인 생산을 위하여 SAGD 공법의 최적 입지를 선정하는데 있어 스팀챔버의 충분한 수직적 연장성을 확보하는 것은 중요한 사항이다. 연구지역에서 획득한 110개의 시추공 자료에 대하여 마르코프 전이 확률 기반의 분석을 실시하였으며 이를 바탕으로 맥머레이층 구성 암상에 대한 추계론적 예측을 실시하였다. 추계론적 모사를 통하여 획득한 다중재현을 기반으로 앙상블 확률 분포도를 제작하였으며 이는 각 암상이 분포 할 수 있는 포텐셜을 보여준다. 앙상블 확률 분포도를 이용하여 투수성 퇴적층(역질 퇴적층 및 사질 퇴적층)에 대한 누적 층후도를 구성하였으며 이를 바탕으로 SAGD 공법이 적용될 수 있는 최적 입지를 선정하였다. SAGD 최적 입지 선정을 위한 추가적인 분석을 실시하기 위하여 전이율을 바탕으로 한 단일 퇴적층의 평균적인 수직 및 수평적 연장성을 산정하였다. 투수성 퇴적층의 평균적인 수직적 연장성은 대체로 투수성 퇴적층에 대한 누적층후도 분포도와 유사한 분포 양상을 보이나 일부 누적 층후가 큰 위치에서 유사하지 않은 양상을 보인다. 이는 누적 층후도와 평균적인 수직적 연장성 분포 양상이 유사하지 않은 지역은 투수성 퇴적층과 다른 암상과의 교호성은 매우 크나 투수성 퇴적층의 수직적인 연장성은 좋지 않음을 의미한다. 따라서 누적층후도 뿐 만 아니라 투수성 퇴적층의 수직적 연장성 또한 충분히 고려하였을 때 건전한 SAGD 최적 입지를 선정하는데 충분히 신뢰성 있는 결론을 도출 할 것으로 판단된다. In the study, three-dimensional geostatistical simulations on McMurray Formation which is the largest oil sand reservoir in Athabasca area, Canada were performed, and the optimal site for steam assisted gravity drainage (SAGD) was selected based on the predictions. In the selection, the factors related to the vertical extendibility of steam chamber were considered as the criteria for an optimal site. For the predictions, 110 borehole data acquired from the study area were analyzed in the Markovian transition probability (TP) framework and three-dimensional distributions of the composing media were predicted stochastically through an existing TP based geostatistical model. The potential of a specific medium at a position within the prediction domain was estimated from the ensemble probability based on the multiple realizations. From the ensemble map, the cumulative thickness of the permeable media (i.e. Breccia and Sand) was analyzed and the locations with the highest potential for SAGD applications were delineated. As a supportive criterion for an optimal SAGD site, mean vertical extension of a unit permeable media was also delineated through transition rate based computations. The mean vertical extension of a permeable media show rough agreement with the cumulative thickness in their general distribution. However, the distributions show distinctive disagreement at a few locations where the cumulative thickness was higher due to highly alternating juxtaposition of the permeable and the less permeable media. This observation implies that the cumulative thickness alone may not be a sufficient criterion for an optimal SAGD site and the mean vertical extension of the permeable media needs to be jointly considered for the sound selections.
정진아 동북아역사재단 2011 東北亞歷史論叢 Vol.- No.33
Korean people’s perception of Japan can be summarized into antipathy against imperial exploitation, favorable impression of Japanese economy and culture, and ignorance of Japanese politics and military. This is less a natural consequence than the result of influence by discourses on Japan in the Cold War Era. With the conclusion of Korea-Japan Treaty in 1965 without apology or compensation from Japan, the consensus “Japan is coming again”spread widely among Korean intellects. In particular, Koreans who had experienced the colonial rule of Japan had strong wariness against imperialistic economic invasion of Japan. However, the urgent question was how to cope with it if Japan comes again. Thus, after the conclusion of the Korea-Japan Treaty,Korean people expressed a strong desire to understand changes in Japan since the 2nd World War along with their wariness of Japan. This desire was largely satisfied by Edwin O. Reischauer’s writings. Reischauer presented the model of Japanese modernization, which was achieved without revolution, as a textbook for Third World countries. Accepting Reischauer’s theory of Japanese modernization,Korea began to think separately Japanese imperialistic invasion and its modernization process, which had been like the two sides of a coin.Reischauer’s theory of Japanese modernization moved Korean people’s perception of Japan, which had concentrated on imperialistic invasion, to the issue of modernization, and this provided an intellectual background for the emergence of the ‘economic animal’ theory in the future. As Japan professed the principle of separation of economy and politics as its external policy and promoted economic cooperation with East Asia, contacting communist countries such as the Soviet Union, China and North Korea, some researchers understood the pursuit of ‘economic benefits’ as Japanese national interest and branded Japan as ‘an economic animal.’ Through this, Japanese militaristic expansion was covered up and only the outcomes of economic growth were spotlighted. ‘The economic animal theory’ regarded Japan as a being thoroughly subordinate to the Far East policy of the U.S. and, by doing so, it overlooked the expansion of the political and military influence of Japan as argued by ‘the dominant power theory.’ Faced with the growth of Japan as a military superpower, Korean people confront the task of narrowing the gap between their perception of Japan and the actuality of contemporary Japan. This will be the process of overcoming the influence of American discourses on Japan and establishing a subjective viewpoint of Japan.
정진아,전선희,한성욱,이길준,배인호,김석규 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.8
The fluorescence of ethidium bound to DNA, poly[d(A-T)_2], and poly[d(G-C)_2] at a [ethidium]/[DNA] ratio of 0.005 was quenched by porphyrins when both ethidium and the porphyrins simultaneously bound to the same polynucleotide. The quenching was tested using the “inner sphere” and the “Förster resonance energy transfer”(FRET) models, with the latter found to contribute, at least in part, to the quenching. Meso-tetrakis(Nmethylpyridinium-4-yl)porphyrin (TMPyP) exhibited a higher quenching and FRET efficiency than cis-bis(Nmethylpyridinium-4-yl)porphyrin (BMPyP) for all of the tested DNA and polynucleotides, demonstrating that energy transfer efficiency is affected by the number of positive charges of porphyrins.