심혈관계 질환으로 관상질환 집중치료실에 입원한 환자들의 혜후 측정을 위한 APACHEⅢ점수 체계의 임상적 유용성

이공섭,이창선,최현주,홍종서,강지향,김도형,이민영,오인균,김병엽,김상억,김학찬,한승혜,이재용,지영우,안경주 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

난소절제후 Estrogen을 투여한 흰쥐 대동맥에서 Protein Kinase C-α와 Fas 발현의 변화

이왕수,이상엽,안지현,송영빈,김학진,이광재,유재격,김상욱,김태호,김치정,류왕성 중앙대학교 의과대학 의과학연구소 2001 中央醫大誌 Vol.26 No.3

Estrogen is believed to decrease coronary artery disease. Protein kinase C-α(PKCα)appear to be important in signal conduction pathways. Estrogen treatment increases catalytic activity of PKCα,and activation of PKCαcan modulate estrogen receptor levels and responsiveness. And it was reported that activation of PKC can protect cells from apoptosis induced by Fas ligation. But the beneficial effect of estrogen on PKCαwas not clearly demonstrated. The objective of this study was to evaluate the role of PKCαafter ovariectomy and estrogen therapy in rat aorta. The results were summarized as below: 1. The significant pathological changes were not observed in the rat aorta irrelevant to ovariectomy and estrogen therapy. 2. The expression of Fas was decreased in the aorta of estrogen-treated rats than that of ovariectomized rats without estrogen therapy. 3. Increased expression of PKCαwas more marked in the aprta of estrogen-treated rats than that of ovariectomized rat without estrogen therapy. In conclusion,PKCαmay be important in signal conduation pathway on the effect of estrogen. Activation of PKCαby estrogen reduced Fas expression, suggesting that PKCαactivation may play a role in protection against atherasclerosis. Further studies are needed to elucidate the role of PKCαafter estrogen therapy.

긴 관동맥병변에서 긴 스텐트삽입에 대한 임상경과 및 재협착율

김영학,박성욱,정상식,박훈기,이상곤,이일수,이철환,김재중,홍명기,박승정 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.6

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.

국립중앙박물과 소장 『조선지도』의 지도사적 의의

이우형(Woo-Hyung Lee),오상학(Sang-Hak Oh) 한국문화역사지리학회 2004 문화 역사 지리 Vol.16 No.1

This article is about the cartohistorical value and significance of the 『Joseon-jido. 朝鮮地圖, Map of Korea』, the copy of the 『Dongguk-daejeondo, 東國大全圖 Great map of Korea.』 by Jeong Sang-Gi(鄭尙驥), which is the collection of the National Museum of Korea. The conclusions are as follows. First, by the contents of the map, it is presumed that the map was made between the years 1757-1767. Therefore, it is easy to assume that the map was made in 1740s. Among the others, the map was made in the earliest days. Second, the 『Joseon-jido』 was drawn on the fine silk with the delicate lines, and the map has rvtanchuria of China and Japan, which were presumed to be included in the original map. Also, comparing the copies of 『Paldo-bundo, 八道分圖 Maps of Eight Provinces』 by Jeong to the map by trigonometry calculation, we can presume that both of the map were made by the same scale. By these reasons, the 『Joseon-jido』 is presumed to be the Dongguk-daejeondo in 『YoungJo Sillok, Annals ofKing YoungJo』, which Jeong Hang-Ryung(鄭恒齡). son of Jeong Sang-Gi(鄭尙驥). brought from home and copied it to provide the map to the HongMoonKwan(弘文館, Office of Special Advisers) in 1957(33th year of King YoungJo) Third, there are over 2200 place names mentioned in the 『Joseon-jido』, and these names are also mentioned in the Dongguk-daejeondo and the Paldo-bundo. Most of the place names of the natural features were that of the mountains. and the name of the hills were mentioned in detail. Most of the place names of the civil features were that of the military facilities, such as military camps and the mountain castles. Therefore. it can be said that the map had administrative and military purpose. Fourth, the expression of the landscape followed the classic mountain range-centered understanding while at the same time stressing the six Jeongmaks(正脈, Secondary Mountain Range), the important military defence line. The traffic route was expressed in detail among the other civil features, and the mountain castles. military camps and the signal fire were also expressed in detail with the more symbolized marks. Fifth, unlike the existed articles. the map expressed the changes in the military camps, mountain castles, traffic routes, stations and the signal fires.

단상 유도형 동기 전동기(LSPM)의 특성해석에 관한 연구

정대성,김승주,이진헌,최재학,이주,Jung, Dae-Sung,Kim, Seung-Ju,Lee, Jin-Hun,Choi, Jae-Hak,Lee, Ju 한국조명전기설비학회 2007 조명·전기설비학회논문지 Vol.21 No.3

가전분야에서의 전동기 효율향상을 통한 에너지 소비절감 효과는 상당히 크지만 이를 위한 전동기의 설계/해석 기술 확보가 아직은 미흡한 상태이다. 이에 따라 유도형 동기전동기가 제안되었지만, 유도형 동기 전동기는 유도전동기와 통기전동기의 특성을 동시에 가지고 있어, 해석 및 설계가 쉽지 않다. 따라서 본 논문에서는 기존의 냉장고 압축기용 전동기인 단상유도전동기를 대처할 수 있는 단상 유도형 동기전동기를 이용해 파라미터에 따라 특성이 어떻게 바뀌는가에 대해 서술하였다. 그에 따라 단상유도전동기의 정상상태 특성을 해석하고 제안모델의 성능을 기존모델과 비교하고 실험하여 해석결과의 신뢰성을 검증한다. 또한 본 논문에서는 제안모델의 기존 고정자 형상이나 권선 스팩을 유지하고 회전자의 형상이나 구조만을 변경시켜 성능향상을 도모하였다. 해석방법으로는 전자장 수치 해석적인 방법으로 널리 이용되고 있는 유한요소법(Finite Element Method : FEM)을 이용하였다. Electric motor efficient improvement from home appliance field is important to the effect reducing the energy consumption. But the electric motor design/analysis technology is still insufficient. Specially the electric motor design/analysis technology of satisfying characteristic of both the induction motor and the synchronous motor such as Line start permanent motor. Therefore the electric motor design/analysis technology is urgently demanded reliability. This paper proposes the sing1e-phase line-start permanent magnet motor to develop the motor it with be able to alternate the sing-phase induction motor it is a refrigerator compressor motor. The sing-phase induction motor is analyzed in the steady state. And we have a certification test to compare our single-phase line-start permanent magnet motor with the sing-phase induction motor. In order to improve the performance, the stator of the single-phase line-start permanent magnet motor is same as the stator of the sing-phase induction motor and changes the rotor form and has the permanent magnet. It used the Finite Element Method(FEM) which is widely used with electronic-magnetic field numerical analysis method.

한국북방경역의 역사지리학적 연구(Ⅰ)

이성학 慶北大學校 1969 論文集 Vol.13 No.-

1) A study of historical change on the north frontiers of Korea. 2) The north boundary was the region of Yo-Dong (遼東) or the river of Pea (浿水) during Ancient-Korea dynasty. It was changed by the vicissitudes or rise and fall of the northern nations. 3) The Emperor of Han (漢) governed the peninsula of Han (韓). Its southern frontier was chiefly the northern region of the Han River (漢江) and the mountaion of Chul-Yung (鐵嶺) 4) Kokuryo(高句麗) occupied the greatest northern territory at the time of King, Yung Rak(永樂): the northern boundary was the eastern region of the river of Yo (遼河) and the region of the Song-Wha River was the large territory which were from Jang-Chun (長春) Nong-An(農安) Ha-L-Bin(哈爾濱) to the East-Sea. (東海) 5) Shilla(新羅) unified three states, yet the did not occupied all of Kokuryo territory but a part of it. The north-western frontier of Shilla was region on the river of Tea-Dong (大同江) Chung-Wha(中和) Sang-Won(祥原) and Kok-San(谷山). The north-eastern frontier of Shilla was the northern region of Chul-Yung(鐵嶺) An-byun(安邊) and northern Kang-Won(江原) of today. Shilla should have occupied the larger northern region, but it was not so large. Note : This is the northern frontier from Ancient-Korea to Shilla Dynasty, but those of Koryo(高麗) and Rhee Dynasty(李朝) will be mentioned at the next number.

여름철 가정집에서의 미세입자 농도 특성

이학성 서원대학교 응용과학연구소 2001 응용과학연구 Vol.10 No.1

Acidic air pollutants were collected to characterize indoor air quality in a residential area in the summer. All indoor and outdoor samples were measured simultaneously using an annular denuder system(ADS) in Seoul. The data set was collected from July 26 to September 11, 1997. Mean indoor/outdoor ratios measured from this study were: 0.78 for PM2.5(dp<2.5㎛); 0.90 for SO42-; 0.68 for NO3-; and 0.79 for NH4+. PM2.5 indoor concentrations were dependent upon the outdoor levels. A tracer-gas decay technique with sulfur hexafluoride(SF6)as the tracer gas was used to estimate the air exchange of a private home in the summer. The average air exchange rate was 23.7hr-1. The PM2.5, SO42-, NO3- and NH4+ deposition velocities calculated were 0.0.42, 0.17, 0.69 and 0.39cm/sec, respectively.

석회화 치성 낭종 1례

이상학,염범우,이승훈,한승훈,김응식,김광일 한국의학사 1998 診斷과治療 Vol.18 No.10

유한 반사판을 갖는 Quadrifilar Helix 안테나의 해석 및 설계

이창희,성원모,최학근 단국대학교 신소재기술연구소 1996 신소재 Vol.6 No.-

유한 반사판을 갖는 Quadrifilar Helix 안테나의 복사특성을 해석하기 위하여 반사판을 WireGrid로 모델링하고 모멘트법을 적용하였다. 안테나의 구조피라미터를 변화시키면서 빔폭, 이득, 입력임피던스, 복사패턴을 계산하여 설계에 이용할 수 있는 데이터를 제시했다. 제시된 설계데이타를 이용하여 위성이동통신용 안테나를 제작하고 복사패턴과 이득, 축비등을 측정하였다. 복사특성 측정치는 이론적 계산치에 근접하는 것으로 나타났으며, 이득을 제외한 다른 복사특성들도 설계사양을 만족하는 것으로 나타났다. The wire-grid model and moment method were adopted to analyze radiation characteristics of quadrifilar helix antennas with finite plate. Radiation characteristics for various structure parameters of the antenna were calculated and presented. A mobile satellite communication antenna was designed and manufactured by use of the presented data. The measured radiation charicteristics, such as axial ratio, half power beamwidth, radiation pattern are in good agreement with the computed results and well satisfy the design specifications except gain.