• Journal of Korean Classical Literature and Education
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• no.32
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• pp.225-260
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• 2016

This paper aims to shed light on the structure of "Eonji[言志]" to demonstrate that it is a song with educational purposes, which is evident in its meaning and constitution. Based on various records of the epilogue and from the texts handed down several generations, it is clear that is an educational song that describes the life of ascholar and the core of knowledge as considered by Lee-Huang. Therefore, the meaning contained in Eonji[言志] is closely related to Lee-Huang's thoughts and it reflects the Confucian way of life. In the 4thphase, Pimi-ilin[彼美一人] of Eonji[言志] states that self-learning and serving the king can be carried out concurrently. The 5th phase of Eonji[言志] describes the anxiety of the lord for the wiseman and urges people to live a life full of consideration. This shows that one should not disregard the fact that a wise man's scholarship and life can contribute to the politics of the real world, even if the wise one chooses to lead a life of seclusion; even when the wise man enters the word of politics, his behavior and traits must not deviate from the calm course of self-cultivation in nature. The structure of Eonji[言志] and its different phases comprising nature, scholarship, and education deal with the following matters: "the meaning of retirement into nature (1stphase)," "nature+the practice of scholarship (2ndphase)," "scholarship+the practice of education (3rdphase)," "nature+the stance of scholarship (4thphase)," "scholarship+the stance of education (5thphase)," and "the beauty of nature+idea of scholarship and education (6thphase)."

• The Journal of Korean Philosophical History
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• no.52
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• pp.107-130
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• 2017

The purpose of this study is to catch the characteristics of the Hanju Yi Jinsang (寒洲 李震相, 1818~1886)'s thought of the 'Li(理)' through Hanju's view on the Ido-seol(理到說), the Toegye Yi Hwang(退溪 李滉, 1501~1570)'s latter Mulgyuk(物格) theory, and to establish the foundation for identifying the aspects of development about Toegye School's concept of Li from Toegye's Ido-seol. The Ido-seol was criticized for regarding Li - the immovable principle - as 'living thing'. Toegye School's scholars tried to solve this problem by translating the 'word' correctly. Hanju also translated the word 'Do(到)', the verb of 'Ido', as meaning of 'perfectly understood' based on his translation of the word 'Gyuk(格)' as 'Ku(究)'. On the other hand, he also regarded the principle-application structure of Li and the its characteristic the 'Li as Hwalmul(活物)' as the main point of Toegye's Neo-confucianism thought his methodology 'Three viewpoints[三看法]'. Before Hanju, scholars dose not have more opinion from the translation of the word, and it is too difficult to identifying their scholarly identity through their viewpoints on Ido-seol. On the other hand, Hanju thought that the lack of the idea for comprehensive approach between Xin(心) and Li(理) will cause the misunderstanding the relationship between Xin and Li. In this reason, he evaluated Toegye's Ido-seol based on the concept of 'One principle and its manifoldness[理一分殊]'. Consequently, he concatenated the characteristic of Xin which includes all things with concept of Mulgyuk, and emphasized that Xin which penetrates the principle of all things has the characteristic of 'One principle(理一)'.

• The Journal of Korean Philosophical History
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• no.35
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• pp.189-222
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• 2012

This study aims to explore Yulgok Yi I(栗谷 李珥)'s political intention through his presenting Seonghakjibyo(The Essentials of the Studies of the Sages, 聖學輯要) to the King Seonjo(宣祖), paying attention to his political situation in early reign of the King. Until presenting the book to the King in December 1576(the 8th year of King Seonjo's reign), Yulgok had been neglected from the political development of the King. So his presenting Seonghakjibyo, which basically professed the perfection of the studies of the Sages(聖學), to the King included another aim to convert the King's negative view on him by synthesizing his political views and appealing to the King. Yulgok's political views are intensively summarized in the book's beginning "Jincha(進箚)" and the final chapter "Seonghyeondotong(聖賢道統)". Through "Jincha", he recalled the past of his political situation during early reign of the King and expressed his own will to participate in the government again by presenting this book that was the summary of his political views. Then through "Seonghyeondotong", he suggested his own specific political opinions to the King as the successor of Taotong(道統) in Chosun by expressing such an ethos that he succeeded directly to Chutzu(朱子). This study firstly tries to identify Toegye Yi Hwang(退溪 李滉)'s presenting Seonghaksibdo(The Ten Diagrams on Sage Learning, 聖學十圖) to the King and Yulgok's successive will on it. Then we will review the times till presenting Seonghakjibyo to the King, 8 years of early reign of King Seonjo when he had been neglected from the political development of the King. Finally we will specifically analyze how his political views are expressed in each beginning and final chapter of the book.

• (The)Study of the Eastern Classic
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• no.35
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• pp.7-33
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• 2009

Oh Su-yeong (1521-1606) would be called 'Gyeomjung' with the pen name of 'Chundang' and 'Doam.' Since he was so good at calligraphy, he would also be one of the 'Seonseong Sampil (three great writers)' along with Geum Bo and Lee Suk-ryang. He wrote "Chundang Collection." So far, a study on him and his writing has been hardly conducted. This paper has investigated his life and companionship in order to restore his legacy that has disappeared in the history of Korean literature. This paper has briefly summarized his life and family line and examined his friendship with the students of Toegye Yi Hwang. In fact, most of his friends were the disciples of the great philosopher and Confucian scholar, which proves what he pursued throughout his life. In his poetry, many poems regarding moral standard in friendship are often found. A true humanity can be felt in them. In his sensitive poems on natural creatures can be sensed his wit and humor. After going through the vortex of war, he vividly described the reality of tragic war through his poems as well. A further study needs to be conducted on his poetry.

• Journal of the Korean Chemical Society
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• v.30 no.5
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• pp.449-455
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• 1986

Various polymer metal complexes have been synthesized from anhydrous $AlCl_3,\;FeCl_3,\;SbCl_5,\;SnCl_4\;and\;ZnCl_2$ with cation exchange resin in carbon disulfide solvent. The forms of the surfaces and sectioned beads of these polymer metal complexes have been observed using scanning electron probe microanalyzer. To examine the catalytic activity of polymer metal complexes, the esterification of various dibasic acids with alcohols have been carried out. Polymer metal complexes were found to be the effective catalyst for esterification of dibasic carboxylic acids.

• Electronics and Telecommunications Trends
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• v.28 no.4
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• pp.23-34
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• 2013

X-선 혹은 감마선 등 종래의 방서선 치료는 양성자 혹은 이온에 의한 치료방법의 등장함에 따라 퇴조할 것으로 보인다. 그 이유는, 양성자 등 전하를 띄는 입자치료기술이 치료 후 후유증이나 암의 재발을 현저히 억제시킬 수 있기 때문이다. 전하를 띄는 입자는 암 조직 전후의 정상 조직에 최소한의 피폭을 주나, X-선이나 감마선과 같은 광자들은 암 조직 전후의 정상세포가 암세포로 변화될 수 있는 정도의 피폭량을 주는 것으로 알려져 있다. 현재 임상 중인 양성자(혹은 극히 일부의 탄소이온 치료기)치료기는 1990년 미국의 로마린다(Loma Linda) 대학에서 최초로 건립된 방식인 사이클로트론 혹은 싱클로트론 가속기와 빔라인 및 겐트리(gantry)로 구성된다. 그 장치의 거대함만큼이나 가격과 유지비 등에서 일반 소형병원에서 운영하기에는 쉽지 않아 보인다. 이에 본고에서는 소형병원에서도 운영할 수 있는 저비용의 레이저 양성자(이온) 가속방식의 등장 배경과 향후 전망을 논하고자 한다.

• Proceedings of the Korean Vacuum Society Conference
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• 2015.08a
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• pp.199.2-199.2
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• 2015

전이금속 칼코겐화합물(TMD)은 2차원 박막 물질로, 그래핀과 함께 차세대 사물인터넷에 적용할 수 있는 전자소자의 소재로 활용될 것으로 기대되고 있다. 특히 TMD는 그래핀과 다르게 1.2 eV 이상의 넓은 밴드갭을 지녀, 기존 실리콘 기반 반도체 소자를 대체할 차세대 물질로 각광받고 있다. TMD는 또한 실리콘 등의 3차원 반도체보다 광전효율이 뛰어나며, 이를 활용한 광전소자의 개발 및 연구가 활발히 진행되고 있다. 그러나 TMD는 그 두께가 나노미터 단위로 매우 얇아 광흡수율이 매우 떨어지는 단점이 있다. 우리는 이러한 TMD 기반 광전소자의 광흡수율을 향상시키기 위해 광전효율이 매우 뛰어난 페로브스카이트(Perovskite)를 TMD 채널 위에 덮음으로써, 이종접합 광전소자를 구현하였다. TMD 물질은 이황화 몰리브데넘($MoS_2$)을 선택하였으며, 광흡수층으로 선택한 페로브스카이트는 $MAPbI_3$을 스핀 코팅을 통해 TMD 채널 층에 접합하였다. 우리는 Photoluminescence 및 UV-Vis 측정을 통해 페로브스카이트 및 페로브스카이트/$MoS_2$ 층의 광특성을 측정하여 페로브스카이트에서 생성된 광캐리어가 확산되어 $MoS_2$에 전달되는 것을 확인하였다. 우리는 추가로 4가지 서로 다른 파장대의 레이저(520, 655, 785, 850 nm)를 이용하여 페로브스카이트 광흡수층이 있을 때와 없을 때의 $MoS_2$ 광검출기의 성능 변화를 관찰하였다.

• Journal of the Korean Electrochemical Society
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• v.3 no.2
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• pp.69-71
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• 2000

Redox-active calix[4]arenes with carboxylic acid and disulfide groups were prepared and spontaneous deposition on silver and gold surfaces was observed. Owing to their unusual structure, the calix[4]arenes exhibit selective affinity fur alkaline earth metal ions in aqueous media. When annular ionophores are immobilized on the surface, voltammetric and spectroscopic studies show the entrapment of metal ions. Furthermore, it was possible to reversibly capture and remove the ions using strong chelating agents such as ethylenediaminetetraacetic acid (EDTA).

• The Korean Journal of Food And Nutrition
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• v.14 no.3
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• pp.228-232
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• 2001

Melanin 생선에 관여하는 tyrosinase 유전자의 발현을 억제하는 물질을 탐색하고자 tyrosinase promoter를 지닌 B16 mouse melanoma cell.에 양파 methanol 추출물을 처리한 바 양파 methanol추출물은 10.0$\mu\textrm{g}$/$m\ell$, 100.0 $\mu\textrm{g}$/$m\ell$, 1.0$\mu\textrm{g}$/$m\ell$ 농도에서 대조군에 비해서 약 15%, 23%, 57%의 억제효과를 나타냈으며, 세포생존율은 1.0$\mu\textrm{g}$/$m\ell$, 10.0$\mu\textrm{g}$/$m\ell$, 100.0$\mu\textrm{g}$/$m\ell$ 1.0$\mu\textrm{g}$/$m\ell$의 농동에서 약 126%, 92%, 85%, 64%로서 세포독성이 낮게 나타났다. Ethyl acetate butyl alcohol. 그리고 물 용매 분획물은 tyrosinase 유전자의 발현을 억제하는 효과가 없었지만 methylene chloride용해 분획물은 10.0$\mu\textrm{g}$/$m\ell$과 100.0$\mu\textrm{g}$/$m\ell$의 농동에서 약 87%와35%의 발현율을 나타냄으로써 대조군에 비해 크게 억제하였다.

• Microbiology and Biotechnology Letters
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• v.31 no.3
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• pp.307-310
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• 2003

A gene encoding streptodornase(sdc) from Streptococcus equisimilis H46A was expressed in S. equisimilis H64H sdc under the control of the streptokinase gene promoter. Secretion of the streptodornase was directed by the signal sequences of streptokinase or streptodornase. The expressed streptodornase activity from S. equisimilis H46A sdc transformant with streptokinase promoter - streptodornase coding sequence fusion vector was 2.3 fold higher than that from wild type. Construct of signal sequence region replaced by streptokinase ones was similarly expressed as a wild type. But constructs of skc or lrp core regions of streptokinase promoter streptodornase fusion were similarly expressed as in sdc mutant. In conclusion, improved expression of streptodornase by use of streptokinase promoter required the full length of promoter.