Ten Poems of Lee Geon-Cheong

Lee Geon-Cheong,Chun Kyung-ja(번역자) The Academy of Korean Studies 1993 Korea Journal Vol.33 No.1

추황배(Pyrus pyrifolia Nakai cv. Chuhwangbae) 과피로부터 1종의 Sterol과 3종의 배당체 화합물의 단리·동정

이유건(Yu Geon Lee1),조정용(Jeong-Yong Cho),이현주(Hyun Joo Lee),이용현(Yong Hyun Lee),이상현(Sang-Hyun Lee),한태호(Tae-Ho Han),김월수(Wol-Soo Kim),박근형(Keun-Hyung Park),문제학(Jae-Hak Moon) 한국식품과학회 2013 한국식품과학회지 Vol.45 No.5

본 연구에서는 배의 유용성 증명을 위한 일환으로 배의 화학성분을 분자수준에서 밝히고자 하였다. 이에 배 과피 MeOH 추출물을 용매분획하여 얻은 EtOAc-산성 분획과 EtOAc-중성분획을 대상으로 Sephadex LH-20, silica gel, 그리고 ODS colmn chromatography와 HPLC를 이용하여 정제 및 단리하였다. 그 결과, EtOAc-산성 분획과 EtOAc-중성 분획으로부터 각각 2종씩의 화합물을 단리하였다. 단리된 화합물 1-4는 1H- 및 13C-NMR 분석을 통하여 각각 (S)-(+)-2-cis-abscisic acid O-β-D-glucopyranosyl ester (화합물 1), 1-[4-O-β-D-glucopyranosyl]phenyl ethanone(piceoside, 화합물 2), β-sitosterol (화합물 3), 그리고 β-sitosteryl 3-O-β-D-glucopyranoside (화합물 4)로 동정되었다. 단리된 3종의 배당체 화합물(화합물 1, 2, 4)들은 본 연구에 의해 배로부터 처음 동정되었으며, 화합물 3은 추황배로부터 처음 동정되었다. 본 연구결과가 배 함유 성분연구는 물론 배의 기능성 해명 연구에도 추후 중요한 기초자료로 활용되길 기대한다. We isolated and identified antioxidants from acidic and neutral ethyl acetate fractions of the peel of pear (Pyrus pyrifolia N. cv. Chuhwangbae). We isolated 4 compounds from the methanol extract, by using 3 different types of column chromatography (Sephadex LH-20, silica gel, and octadecylsilane) and preparative HPLC. We identified the isolated compounds as (S)-(+)-2-cis-abscisic acid O-β-D-glucopyranosyl ester (compound 1), 1-[4-O-β-D-glucopyranosyl]phenyl ethanone (picroside, compound 2), β-sitosterol (compound 3), and β-sitosteryl 3-O-β-D-glucopyranoside (compound 4) by nuclear magnetic resonance analysis. We are the first to report the identification of compounds 1, 2, and 4 from pear.

Efficient Construction Process and Distribution System through Construction IT Convergence based on 4th Industrial Revolution Technology: Focused on Distribution Management of Free-form Structural External panel

Lee,Dong-Woon,Kim,Dae-Geon 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-

The distribution of construction materials and the schedule management of a project are important elements in ensuring an effective construction system and reasonable construction duration and cost. Therefore, IT convergence technology of distribution to the construction industry, a BIM module is composed as a 4D model more easily, which is considered to contribute to a reduction in construction duration, an improvement in quality and a reduction in cost through efficient management of manpower and the minimization of errors arising from the site construction by reflecting information in real time through an RFID system.

SnO₂/TiO₂후막형 습도센서의 제조 및 특성

이건동,이재현,박효덕,이덕동,최흥문 경북대학교 센서기술연구소 1991 센서技術學術大會論文集 Vol.2 No.1

SnO_(2) doped with TiO_(2) and other activating agents, is used as a raw material to prepare humidity sensors. SnO_(2) is an n-type semiconductor whose resistance is described as a function of relative humidity. SnO_(2)/TiO_(2) thick film humidity sensors have been fabricated by using typical silk screen printing techniques. The humidity sensitivity of SnO_(2)/TiO_(2) thick film has been investigated. And the sensing characteristics of the fabricated SnO_(2)/TiO_(2) sensors such as resistance change and response time, has been investigated from R.H.20 % to 90 %. Experimental results show that the impedance-humidity characteristics of the humidity sensors depend on the microstructure of surface roughness and pore size distribution.

심한 하악골 전돌증 환자의 외과적 치험례

권대근,이상한,이근호,장도근 大韓顎顔面成形再建外科學會 1994 Maxillofacial Plastic Reconstructive Surgery Vol.16 No.1

Obwegeser Ⅱ method and Rigid fixation conserving the condylar position has been performed on 5 patients with severe mandibular prognathism, and we obtained the result after the follow up study follows. 1. Obwegeser Ⅱ method is considered to move the distal segment passively when surgical correction of severe open bite correction and large amount of set back above 15mm is needed. 2. In one case that has more change of condylar position after operation, documented immediate post- operative relapse have been occurred 3. In the others that have adequate control of condylar position, passive set back and firm skeletal fixation, more functional and esthetic improvement and more post-operative stability has been achieved

여수국가산업단지 인근 지역 대기오염물질 농도에 영향을 미치는 요인분석

김민영,변정훈,이영훈,이건영,한지은,이예림,임지현,장봉기 순천향대학교 기초과학연구소 2022 순천향자연과학연구 논문집 Vol.28 No.1,2

Eight monitoring stations in the Yeosu National Industrial Complex will determine the concentration of air pollutants measured every hour in 2019, analyze what factors affect them, and how they correlate with the air pollutant measurements. Six air pollutants (SO2, NO2, O3, CO, PM-10 and PM-2.5) measured at eight monitoring stations around Yeosu National Industrial Complex (Seogang-dong, Wolnae-dong, Munsu-dong, Yeocheon-dong, Deokchung-dong, Hwayang-myeon, Yulchon-myeon, Samil-dong) the measurement data for each hour of the year were downloaded to analyze the concentration by weather condition, time zone, season, separation distance from Yeosu Industrial Complex, and separation distance from Gwangyang Industrial Complex. SO2, NO2, and CO concentrations were significantly higher in winter, significantly lower in summer, and O3, PM-10, and PM-2.5 concentrations were significantly higher in spring. SO2, CO, PM-10, and PM-2.5 concentrations were significantly higher between 10 a.m. and 12 p.m., NO2 concentrations were significantly higher between 7 a.m. and 9 a.m., and O3 concentrations were significantly higher between 13 p.m. and 15 p.m.(p<0.001). The concentration of air pollutants (SO2, NO2, CO, PM-10, PM-2.5) excluding O3 was found to have a negative (-) correlation with weather condition, and in the case of O3, it was found to have a positive (+) correlation with PM-10, PM-2.5, temperature and wind speed. It was confirmed that the concentration of air pollutants emitted from the Yeosu National Industrial Complex differs depending on the season, time and distance to the industrial complex. This study aims to establish measures to minimize health damage to residents living relatively close to the industrial complex and contribute to the establishment of management and response measures according to the properties of substances to reduce the concentration of air pollutants in the future.

술후성상악낭의 임상적, 방사선학적 연구

이건일,박태원 大韓口腔顎顔面 放射線學會 1994 Imaging Science in Dentistry Vol.24 No.1

Post operative maxillary cyst may arise after the surgical treatment for maxillary sinusitis with the symtoms of swelling, pain, and pus discharge in the buccal region. It is examined by Waters' view, panoramic view and other intraoral radiographs, but quite variable radiologically. Most of the cyst is seen round or ovoid shape radiolucency, destruction, expansion and thinning of the lateral wall or posterior wall, and roots of the adjacent teeth may be resorbed. We studied about 117 cases of the post operative maxillary cysts which diagnosed in department of oral and maxillofacial radiology, Seoul National University Hospital. We analyzed and obtained following results. 1. These cysts occured more frequently in male than in female and the incidence is highest in the 4th and 5th decade. 2. Initial radical operation of maxillary sinus were performed mainly between the age of 10 and 45 years, and about 60% of the patients were 15 to 25 years. 3. Pain and swelling on buccal area, pus discharge, and toothache are most chief compaints, seven cases were found at routine examination without symtoms. 4. Most of these cysts were unilocular with smooth and well-defined border. 5. The majority of the cysts occurred in the anterolateral wall of maxillary sinus. 6. Dental changes of the lesional area were loss of lamina dura and root resorption, but about 56% were not changed.

30年代 韓國 田園詩의 外來的 要素

李健淸 한양대학교 한국학연구소 1990 韓國學論集 Vol.18 No.-

As above mentioned, Korean pastoral poetry, founded on the tradition of the pastoral poetry of the Yi Dynasty, was influenced by some of the Western elements. The foreign elements accepted and transformed in the traditional flow of native pastoral poetry are as follows: Since the modernization of Korea, however, "childhood" has frequently been sung of in Korean pastoral poetry as one of the important ideas. This reflects Western influence since childhood is also regarded as one of the representative ideas in Wesern pastoral poetry. "Arcadia", the typical place of retirement in Western pastoral poems is transfigured into "Romote Land" or "Namchon" in Korean pastoral poetry. While "Dowhawon" of Doyonmyung represented fantasy beyond actual reality, "Arcadia" "Remote Land" or "Namchon" represent realistic ideas directly related to human life. The shepherds, "Corin" or "Michael" of Western pastoral are transfigured into different figures in Korean pastoral poetry. The peculiar fact that "sheep" and "shepherd", not "cow" frequently appear in Korean pastoral poetry where agriculture forms the basic pattern of life also indicates Western influence on Korean pastoral poetry. The pastoral poetry of the Yi Dynasty mostly concerned ideas and rarely used images. In Korean pastoral poetry, however, we can often, find emotional expressions using images, those images savoring strongly of Western tastes.

명사/동사/조사(N/V/P) 범주에 실현된 다의 현상과 의미 확장

이건환 조선대학교 인문학연구소 2008 인문학연구 Vol.36 No.-

In general understanding of polysemous phenomenon, this paper represented the realized object which was some parts of speech categorization of Korean. and tried to observe the polysemous phenomenon and meaning extension. Especially, the polysemous phenomenon of noun category tried to observe more body word '머리' than previous abstract word study. and then tried to verb category '먹다' limited in the previous lexical boundaries. and so on. In both categories, I tried to interpreted the archtype meaning and extended meaning based on the Experientialism. 본고는 그간의 어휘 층위에서 이뤄진 다의어에 대한 연구를 확장하여 문법 전 범주에 이 현상이 편재한다는 것을 보여주고자 한 연구이다. 이를 위해 우선 명사/동사/조사(N/V/P) 범주 속의 다의 현상을 살펴보되 기존 언어적 해석의 우선성보다 경험적인 체험주의 의미해석을 시도하였다. 명사 범주에서 신체 어휘 ‘머리’를 대상으로 신체적 기반에서 형성된 개념이 중심적 의미를 형성하고 이를 기반으로 맥락에 따라 의미가 확장되는 경우를 살핀다. 동사 범주에서는 ‘먹다’의 경우를 실례로 들어 원형적인 의미가 인간의 신체 작용과 밀접한 관련을 갖고 이것이 다양한 의미지반에서 ‘온유적 투사’를 거쳐 확장 의미가 형성되는 것을 살핀다. 조사 범주는 ‘-로’를 통해서 ‘-로’가 갖는 체험적 구조 속에서 조사 ‘로’의 원형의미가 다양한 확장의미를 갖게 되는 사례를 소개한다. 마지막으로 원형의미에서 확장의미로의 방향성을 갖는 원리를 ‘의미 확장의 원리’라고 지칭하고, 의미의 비대칭성, 방향성, 불연속성 등의 특징에 주목한다.

수계환경에서 분변성 오염의 지표로 사용되는 미생물들

이건형 한국환경생물학회 2002 환경생물 : 환경생물학회지 Vol.20 No.3

The direct detection of intestinal pathogens and viruses often requires costly, tedious, and time-consuming procedures. These requirements developed a test to show that the water was contaminated with sewage-borne pathogens by assessing the hygienic quality of water based on indicator microorganisms whose presence indicates that pathogenic microorganisms may also be present. Various groups of microorganisms have been suggested and used as indicator microorganisms. Proposed and commonly used microbial indicators are total coliforms, fecal coliforms, fecal streptococci, Clostridium perfringens, heterotrophic plate count, bacteriophage, and so on. Unfortunately, most, if not all, of these indicators are not ideal because of the sensitivity and resistance to environment stresses and disinfection. However, the development of gene probes and PCR technology may give hope for the discovery of rapid and simple methods for detecting small number of fecal pathogens in various environments.