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Synthesis of Tricyclopentadiene Over Nanoporous MCM-41 Catalysts.
Park, Eunseo,Kim, Jinhan,Yim, Jin-Heong,Han, Jeongsik,Park, Young-Kwon,Jeon, Jong-Ki American Scientific Publishers 2015 Journal of nanoscience and nanotechnology Vol.15 No.7
<P>The objective of this study is to evaluate the catalytic potential of metal oxide/MCM-41 catalysts in dicyclopentadiene oligomerization/dicyclopentadiene oligomer isomerization. Molybdenum oxide, tungsten oxide, and titanium oxide were loaded on MCM-41 using the modified atomic layer deposition method. The amount of the acid site with weak strength has been increased through metal oxide deposition. The oligomer yield in dicyclopentadiene oligomerization/dicyclopentadiene oligomer isomerization did not change with increasing of the amount of acid site. The highest tricyclopentadiene isomer selectivity over the MoO3/MCM-41 catalyst could be attributed to having the highest overall number of acid sites among the catalysts.</P>
Park, Sunho,Kim, Seung-Jun,Yu, Donghyeon,Peñ,a-Llopis, Samuel,Gao, Jianjiong,Park, Jin Suk,Chen, Beibei,Norris, Jessie,Wang, Xinlei,Chen, Min,Kim, Minsoo,Yong, Jeongsik,Wardak, Zabi,Choe, Kevin Oxford University Press 2016 Bioinformatics Vol.32 No.11
<P>Motivation: Identification of altered pathways that are clinically relevant across human cancers is a key challenge in cancer genomics. Precise identification and understanding of these altered pathways may provide novel insights into patient stratification, therapeutic strategies and the development of new drugs. However, a challenge remains in accurately identifying pathways altered by somatic mutations across human cancers, due to the diverse mutation spectrum. We developed an innovative approach to integrate somatic mutation data with gene networks and pathways, in order to identify pathways altered by somatic mutations across cancers. Results: We applied our approach to The Cancer Genome Atlas (TCGA) dataset of somatic mutations in 4790 cancer patients with 19 different types of tumors. Our analysis identified cancer-type-specific altered pathways enriched with known cancer-relevant genes and targets of currently available drugs. To investigate the clinical significance of these altered pathways, we performed consensus clustering for patient stratification using member genes in the altered pathways coupled with gene expression datasets from 4870 patients from TCGA, and multiple independent cohorts confirmed that the altered pathways could be used to stratify patients into subgroups with significantly different clinical outcomes. Of particular significance, certain patient subpopulations with poor prognosis were identified because they had specific altered pathways for which there are available targeted therapies. These findings could be used to tailor and intensify therapy in these patients, for whom current therapy is suboptimal.</P>
Synthesis of Dicyclopentadiene Oligomer Over Nanoporous Al-MCM-41 Catalysts
Park, Eunseo,Kim, Jinhan,Yim, Jin-Heong,Han, Jeongsik,Kwon, Tae Soo,Park, Y. K.,Jeon, Jong-Ki American Scientific Publishers 2016 Journal of nanoscience and nanotechnology Vol.16 No.5
<P>One step reaction composed of DCPD oligomerization and DCPD oligomer isomerization was investigated over nanoporous Al-MCM-41 catalysts. The effects of aluminum grafting over MCM-41 on the catalyst characteristics were studied with respect to the synthesis of TCPD isomer. Physical and chemical properties of the catalysts were analyzed by N-2 adsorption, temperature-programmed desorption of ammonia, and infrared spectroscopy of adsorbed pyridine. The overall number of acid sites as well as the number of Lewis acid sites increased with increasing of aluminum content over MCM-41. When utilizing MCM-41 and Al-MCM-41 as the catalyst, DCPD oligomerization reaction activity greatly increased compared to the thermal reaction. The highest TCPD isomer selectivity over the Al-MCM-41 catalyst with the highest aluminum content could be ascribed to the largest amount of acid sites. This study showed an increased level of TCPD isomer selectivity by an increasing level of Lewis acid sites through aluminum addition over MCM-41.</P>
박정식 ( Jeongsik Park ) 아시아문화학술원 2018 인문사회 21 Vol.9 No.5
요약: 오스틴은, 모든 발화는 어떤 행위를 수반한다는 화행이론을 주창하였다. 본 연구는 오스틴의 화행을 통해 애국가 가사를 분석해보았다. 분석 결과, 전기 오스틴 이론에서 1절, 4절, 후렴은 수행문으로, 2절과 3절은 경우에 따라 진위문 혹은 수행문으로 볼 수 있었다. 그리고 후기 오스틴에서 1절은 바람을 나타내는 발화수반행위를 포함하고, 나머지 2~4절과 후렴은 모두 발화수반행위를 포함하며 청자의 결과적 행위에 따라 발화효과행위를 포함할 수도 혹은 포함하지 않을 수도 있었다. 특히, 1절부터 4절까지 그리고 후렴도 모두 발화수반행위 중 주장, 요구, 촉구, 강조를 포함하는 행사발화를 나타내고 있음을 알 수 있었다. 즉, 애국가는 꿋꿋하고 변함없이 우리나라를 사랑하자는 것으로 강력한 행동을 강조하고 촉구하는 행사발화라고 할 수 있을 것이다. 이처럼 발화의 의미는 누가 어떠한 상황에서 어떻게 발화하는지에 의해 확정되므로, 텍스트를 해석할 때 다양하고 열린 관점으로 다가갈 수 있다는 가능성을 확인할 수 있었다. Austin advocated the theory of Speech Act, in which every utterance involves an act. This study analyzed the lyrics of AeGukKa through Austin’s Speech Act. As a result of analysis, in early Austin theory, verse 1, verse 4 and refrain were seen as the performative sentences, and the rest verse 2 and verse 3 were seen as the constatives or performative sentences according to circumstances. And in later Austin, verse 1 contains the illocutionary act of the wish, and the rest verse 2 and verse 4 contains the perlocutionary act, which may or may not include by consequential act of listener. In particular, it can be seen that verse 1 to verse 4 and refrain all shows the exercitives including the claims, demands, urges, and emphasis in the illocutionary acts. That is to say, AeGukKa will be exercitives to emphasize and urge strong act including uprightly and constantly loving our country. In this way, the meaning of the utterance is determined by how it is uttered in a certain situation, so that we were able to confirm the possibility of approaching from various open viewpoints when we interpreted the text.