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서지연(Seo Ji Youn),김남일(Kim Nam Il),안상우(Ahn Sang Woo) 한국의사학회 2007 한국의사학회지 Vol.20 No.1
In Korea tumors occurred frequently, and the tumor medicine used to treat them developed. Because tumors due to Koreans' physical constitution and environment and there has always been an impeding need for a cure, traces of such efforts can be found throughout Korean medical history. During the mid-Chosun dynasty, the government founded a government office that specialized in curing tumors. This study observes the establishment and operation of this institution.
Dopant Engineering for Hole-Transporting Materials towards Highly Efficient Perovskite Solar Cells
Ji-Youn Seo(서지연) 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.1
One of the most prominent hole-transporting material (HTM) for hybrid perovskite solar cells (PSCs) has been 2,2',7,7'-tetrakis[N,N-di(4- methoxyphenyl) amino]-9,9'-spirobifluorene (spiro-OMeTAD), which is commonly doped with metal bis(trifluoromethyl sulfonyl)imide (M(TFSI)n) salts that contribute to generating the active radical cation HTM species. The underlying role of the metal cation, however, remains elusive. Here, we analyze the effect of metal cations on doping spiro-OMeTAD by a combination of techniques, including electron paramagnetic resonance (EPR) and UV-vis absorption spectroscopy, which is complemented by photovoltaic device and hole mobility analysis. As a result, we reveal the superiority of Zn-based TFSI salts in device performance as compared to the others, including redox-active Cu(TFSI)2. This analysis thereby unravels some of the design principles for dopant engineering in HTMs for hybrid perovskite photovoltaics.
서지연(Seo Ji Youn),김남일(Kim Nam Il) 한국의사학회 2007 한국의사학회지 Vol.20 No.2
Yim Eon Kook was deeply involved in founding Chijongcheong(national tumor medical clinic), a government branch in charge of treating tumors mid-Chosun dynasty. He came to be famous nationwide for curing tumors well and when the royal family was notified of this, they founded the Chijongcheong to supply professional health care. He wrote books on treating tumors such as 『chijongjinam』 and contributed significantly to the advancement of the tumor treating during his times. He also influenced the development and advancement of tumor-related treatments in late-Chosun as well.
색조 화장품 광고에 나타난 유행 색채 변화에 대한 연구 - 아이섀도를 중심으로
서지연(Seo Ji-Youn),황선진(Hawng Sun-Jin) 한국인체미용예술학회 2005 한국인체미용예술학회지 Vol.6 No.2
The purpose of this study is to analyze a color tone with an integrated image suitable for the sensitivity of consumers and a higher predictive ability through color planning by analyzing the color, coloring and makeup trends of eye shadow of hue cosmetics, since customers sensitively react to the colors of eye shadow the most.<BR> Data is Collected by the analysis of the advertisements of eye shadow from 1994 to 2003 based on advertisement copy, color, and coloring image suggested that an image of the fashionable colors of eye shadow was integrated and correlated to the coloring including the hue; it was makeup expressed as a color and a copy rather than as the hue itself as proposed by the fashionable colors of eye shadow.<BR> The results of this study focused on basic data for a more precise forecast concerning the hue, coloring, and makeup trends in hue cosmetics that should propose new colors to meet the rapidly changing demands of the consumers every season. Breaking away from irrational, inefficient methods wherein individual intuition was applied to the planning of the hue or the individual development of the hue, coloring, and makeup trends resulted in different images.
이정록 ( Jeong Rok Lee ),오준호 ( Jun Ho Oh ),서지연 ( Ji Youn Seo ),김태은 ( Tae Yuen Kim ),홍세영 ( Sae Young Hong ),윤성익 ( Seng Yick Yun ),차웅석 ( Wung Seok Cha ),김남일 ( Nam Il Kim ) 대한경락경혈학회 2007 Korean Journal of Acupuncture Vol.24 No.1
Objectives: Balhae was a Kingdom forming the Period of Southern and Northern Kingdoms with Shilla. Because there have been paid little attention to the medicine of Balhae in the medical history field, we have little information on the medicine of Balhae thoroughly in detail. The aim of this study was to explorer on the acupuncture and moxibustion in Balhae as a part of the study on the medicine of Balhae. Methods: Because the historical remains of BalHae is not sufficient, it is hard to find out the part directly related to medicine However, the study established the category of acupuncture and moxibustion based on two rational frames from both diachronic and synchronic respects. Results: BalHae succeeded to the unique tradition and manufactured excellent needles which is harmless to human body. And BalHae`s acupun`cture was the highest level in those days by succeeding to the tradition from Gogugryeo. There might have been the Bi-Bo idea that we can treat country`s disease with the Bo-sa (補瀉) theory of acupuncture in BalHae. Conclusions: We could know that there has been many medical scriptures of our own in BalHae. We could find out that BalHae succeeded to the legitimacy of our native medicine from Gojosun to Goguryeo and that they had the highest Acupuncture and Moxibustion in those days.
금속-유기 프리커서를 통한 연료전지 분리판 성능/내구 향상 소재 연구
최광훈(Choi Kwang Hoon),김보경(Kim Bo Kyung),여인웅(Lyo In Woong),홍웅표(Hong Woong Pyo),서지연(Seo Ji Youn) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
Diamond-like nanocomposite coatings comprising metal-organic precursor and carbon material were explored by plasma enhanced chemical vapor deposition with various CF4 flow rates. As the flow rate of CF4 increase, surface energies and corrosion properties of the resulting coating were enhanced, indicating CF bonding between carbon and fluorine were generated during PECVD reactions. High conductivity of the resulting coating is a reasonably possible candidate for separator plates
재킷 소재에 따른 Fitting 용 머슬린 선정에 관한 연구
조진숙,서지연 한국의류학회 2001 한국의류학회지 Vol.25 No.3
The purpose of this study is to suggest a guidance to select proper muslin through investigating fabric characteristics. The structural and physical properties of muslin and top fabric samples were tested by KES-FB system and other testers. And in order to examine the relation between fabric characteristics and the shape of garments, wearing tests were done with jackets made of those samples. As a result, bending rigidity(B), bending hysteresis(2HB), shear stiffness(G), shear hysteresis at=0.5(2HG), shear hysteresis at=5 (2HG5), stiffness, cloth count/5cm, weight, thickness were extracted as the key factors affecting the appearance of garments. To have similar appearance, all of these should be counted. After standardizing, we calculate the variance between top cloth and muslin. And from this we could get the range that the proper muslin should be included. The ranges were as follows: Bending rigidity(B): within 0.024g·㎠/cm(0.3σ); Shear stiffness(G): within 2.21g/cm·degree(1.3σ) Weight: within 9.33mg/㎠(1.8σ); Thickness: within 0.20mm(1.8σ)