셀레나이트로 유도되는 백내장에서 선삼 성분에 따른 백내장 억제효과의 비교 분석

이상목,정문선,정진호,김미금,위원량,박정일,이진학,Sang Mok Lee,MD,Jung Moon Sun,MD,Jin Ho Jeong,MD,Mee Kum Kim,MD,Won Ryang Wee,MD,Jeong Hill Park,PhD,Jin Hak Lee,MD 대한안과학회 2010 대한안과학회지 Vol.51 No.5

Purpose: To compare the protective effects of saponin and non-saponin Sun-ginseng extract fractions in a selenite-induced rat cataract model. Methods: A total of 101 Sprague-Dawley rat pups were divided into four groups by treatment: Sun-ginseng, saponin fraction, non-saponin fraction, and control. For induction of cataracts, sodium selenite 15 nmol/g was injected subcutaneously in 13 day-old rat pups. Sun-ginseng extract 100 μg/g (Group I, Ginseng Science, Seoul, Korea), saponin fraction 100 μg/g (Group II), non-saponin fraction 100 μg/g (Group III), and phosphate buffered saline (Control group) were injected intraperitoneally every two days for a total of seven injections. The rats were sacrified and their lenses were dissected and photographed at day 7 and 14, and the cataracts were graded according to the ratio of the cataract area to the total lens area. The blind method was used for the evaluation of the cataract area. Results: At day 14, cataract formation rates (CFR) were 33.3% in group I, 76.4% in group II, 41.2% in group III, and 77.7% in the control group. The mean cataract area (MCA) was 13.4±20.8% in group I, 14.4±11.7% in group II, 5.7±7.7% in group III, and 15.8±12.1% in the control group. Group III showed statistically significant results compared with those of control group (CFR p=0.001, MCA p=0.001). We observed significantly lower incidence and smaller mean cataract area in Group I and Group III at day 7 compared with the control group (Group I, CFR p=0.018; Group III, CFR p=0.032, MCA p=0.005). Conclusions: The protective effects of Sun-ginseng extract are caused by the components in the non-saponin fraction, not by those in the saponin fraction, in a selenite-induced cataract rat model. J Korean Ophthalmol Soc 2010;51(5):733-739

임학선 호흡표기법 실용화 방안

박지선 ( Park¸ Jee-seon ),임학선 ( Lim¸ Hak-sun ) 한국무용연구학회 2021 한국무용연구 Vol.39 No.1

본 연구는 ‘임학선 호흡표기법’의 실용화 방안으로, 호흡표기법의 창안자와 공동연구를 통해 ‘호흡 움직임 분석틀’을 제시하여 춤현장의 실증적 연구방법을 세우고자 했다. 임학선 호흡표기법은 태극의 움직임을 형상한 ‘점ㆍ선ㆍ원’의 구조적 원리에 따라 내적 흐름을 중시하는 한국춤에 특성화된 무용기록법이다. 이 표기법은 들숨ㆍ날숨ㆍ멈춤의 기호학적 호흡표기로 호흡의 장단ㆍ대소ㆍ강약을 구분하여 무용의 3요소인 시간ㆍ공간ㆍ힘을 분석할 수 있었다. 또한 호흡표기로 리듬의 변화에 따른 호흡 패턴을 분석하여 움직임에 대한 이해도를 높여, 춤동작 재현에 정확성을 기할 수 있다는 것을 확인했다. ‘호흡 움직임 분석틀’은 임학선 호흡표기법을 실용화한 구조적 체계로 호흡과 움직임을 동시에 기록하여 움직임 구조와 원리를 규명하는데 용이했다. 이 분석틀은 한국춤의 내적ㆍ외적 구조분석을 통해 움직임 기능과 예술적 표현을 향상시키고, 춤의 철학적 접근과 미학적 분석을 통해 한국춤의 역사와 전통의 맥을 이어나갈 수 있는 방법론임을 확인했다. 본 연구가 실제적인 무용예술의 이론적 체계를 세워 춤 현장과 교육, 무용학의 과학적이고 체계적인 발전에 도움이 되기를 바란다. This study is a practical use plan for ‘Lim Hak Sun Breathing Notation’ and aims to establish an empirical research method of dance science by presenting a ‘Respiratory Motion Analysis Framework’ through joint research with the creator of breathing notation. Lim Hak Sun Breathing Notation is a dance record method specialized in Korean dance that emphasizes inner flow according to the structural principles of ’points, lines, and circles‘ that shape the movement of Taegeuk. This notation was able to analyze time, space, and energy, which are three elements of dance, by distinguishing the long&short, large&small, strong&weak of breathing through the semiotic respiration of inhalation, exhalation, and stopping. I also analyzed the rhythm breathing pattern and confirmed that it can be accurate in reproducing dance movements. The ‘Respiratory Motion Analysis Framework’ is a structural system that utilizes Lim Hak-seon's breathing notation. Through internal and external structural analysis of Korean dance, this analysis framework was confirmed to be a methodology to improve movement function and artistic expression, and to continue the history and tradition of Korean dance through philosophical and aesthetic analysis. It is hoped that this study will help the scientific and systematic development of dance studies by establishing a theoretical system of practical dance art.

태양돛 기술 동향

조형순(Hyeong-Sun Cho),김학인(Hak-In Kim),이수용(Soo-Yong Lee),노진호(Jin-Ho Roh) 한국항공우주학회 2014 韓國航空宇宙學會誌 Vol.42 No.6

태양돛은 태양 광자들의 운동량 변화를 이용하여 추력을 얻는 우주선이다. 매우 작지만 연속적인 가속도를 얻을 수 있어 태양돛은 다양한 임무를 수행할 수 있다. 효과적인 임무 개발을 위해서는 태양돛의 형상, 돛의 재료 그리고 전개 장치에 따른 구조/재료적 특성뿐만 아니라 위성의 임무 궤적에 따른 자세제어 방법들을 고려해야 한다. 본 논문에서는 태양돛의 기술발전, 태양돛 제작에 필요한 소요기술 그리고 태양돛을 이용한 향후 개발 가능한 위성 임무에 대하여 살펴보고자 한다. Solar sail spacecrafts can gain propulsion using the momentum change through reflecting the photon packets of energy from the Sun. The sail slowly but continuously accelerates to accomplish a wide-range of potential missions. To develop the potential mission of the solar sail, the configuration, the film characteristics and the deployment devices should be carefully considered. In this paper, recent development and activities of the solar sail are introduced and design technology of the sail subsystem is investigated.

現代 韓國畵 展開過程에서의 性向 考察 : Focused on the Korean abstract paintings after 1960's 1960년대 以後 韓國畵 抽象系列 作品을 中心으로

宣學均 관동대학교 1984 關大論文集 Vol.12 No.2

現代 韓國畵 抽象의 展開는 旣存에 대한 새로운 創造精神으로 부터 出發한다. 새로운 創造精神이란 未知에 대한 關心의 發露로서 現代 韓國美術의 한 쟝르(genre)를 成立하는 것과 相關關係를 지닌다. 그 새로움을 向한 探究의 意志는 여러 경향의 表現技法으로의 方向을 提示해 주고 있다. 그러한 變貌의 추세 가운데에서 現代 韓國畵의 抽象表現技法은 水墨, 彩色, 立體系列의 抽象作業을 通해 적극적인 實驗을 通해 새로운 造形美를 보여주고 있다. 이것은 또한 現代 韓國畵의 時代的인 美意識으로서 表現技法, 時代性, 樣式(pattern)을 提示하고 있는데, 本 硏究에서는 現代 韓國畵가 傳統繪畵로 부터 벗어나 새로운 方向摸索을 하고 있는 現代 韓國畵의 抽象表現技法에서의 感覺的인 것, 觸感的인 것, 精神的인 것을 東洋繪畵의 抽象性과 時代性에서 찾아보고자 한다. 또한 現代 韓國畵 抽象에 西洋의 抽象表現主義가 미친 影響과 그러한 影響에서 비롯된 여러傾向의 抽象表現技法과 材質의 實驗을 通한 作品製作過程, 그리고 여러影響의 作品性向을 分析해 보고자 한다. 現代 韓國畵 抽象表現技法을 편의상 平面系列의 抽象에서 水墨위주의 抽象, 彩色위주의 抽象에 대해 그 造形理念 및 製作技法에 대해 硏究 分析해 보고 立體系列의 抽象에서는 空間槪念 設定, 材質感의 導入, 作家의 精神的인 內面世界에 대해 洞察해 보고자 한다. 따라서 現代 韓國畵 抽象 表現技法을 1960年代에서 1970年代末가지에 展開過程을 團體別, 個人別로 作品傾向 및 그 性向을 알아보고 未來의 韓國畵의 造形理念 設定 및 方向을 摸索하고자 함이며, 또한 한 時代를 사는 作家들에 의한 開拓精神과 造形實驗에 可能性을 提示하고자 한다. The development of the modern Korean paintings originted in a creative spirits on the past establishments. The new creative spirits have an interaction between the realizations in the modern Korean paintings as an interest in the unknown. The will of pursueing for the new shows the Various trends of representative technique. Among the tendency of the change, modern Korean abstract representative techniques show the new beauty of plastic art through the abstract work and positive experimentation. Also, these represent the expressive techniques, the spirit of the times, patterns as asense of beauty in the modern Korean painting, however, this study aimed at seeking for the sensative, the tactile and the spiritual techniques of the modern Korean abstract paintings which are trying to divert from its traditional paintings at the abstractness and the spirit of the times. The influence on the modern Korean abstract from the western abstract expressionism, the various trends of the abstract representative techniques and work process through the experiment of mterical originating from the influence, and the some analyses on various dispositions of work were, also, the topic of the study. The study was concerned with the analyses of the idea o plasticity and the working techniques on the abstract like a pale Indian ink and a coloring in 2-dimensional situation as well as with the analyses of the establishment of spatial concept, the introduction of material characteristics, and the painter's introspective spiritual world. The study was on comprehensive survey on the moder abstract technique of evolution in trends on works from 1960's to 1970's, The main characteristics of work by groups or individuals, and the future goals of Korean paintings, and the exploration of possibilities in the active spirits by the painters today.

Passive Sampler를 활용한 공단지역의 대기질 평가

김선태,김성근,김학민,정의석 대전대학교 환경문제연구소 2001 환경문제연구소 논문집 Vol.5 No.-

We used the passive diffusion samplers that are known to be very useful to measure the concentration of air pollutants with respect to the spatial distributions. In this study, we estimated the badge type passive sampler which is evaluation of accuracy and precision and badge type passive sampler is used for the measurement of So2 and No2 in pohang, Kunsan, Daejeon industral complex monthly. Concentration and spatial distribution survey are presented during 1 years. For So2 and No2 passive sampler, we made additional two blank samplers for each compound with the passive samplers for the actual measurement. The results of blank test shows that No2 is 0.29ppb, So2 is 0.55ppb on basis of the month. Using the results measured at the same places as TMS (telemetering system) sites, the accuracy of the passive sampler could be checked. The measurement data with passive sampler was time weighted average concentration for a month. So, it might be difficult to compare two data directly. Althought the correlation between the results of passive sampler and TMS data were not appeared so high, the applicability of passive sampler would be acceptable considering that these data were produced in uncontrolled experiment environment. Monthly variations of average So2 concetration in three industrial complex areas was compared. The average So2 concentration in Pohang and Kunsan area was appeared to be higher than Daejeon area because Pohang and Kunsan area is much bigger than Daejeon area in the magnitude of industrial complex. Also Pohang area was apperad to be higer than Kunsan area because the measurement data in Pohang area included the data inside the factory's lot, Also, the Comparison of NO2 concentration in each sit shows that NO2 near busy road is higher than residential area and industrial area. It is considered that the measurement of air pollutant using passive sampler is suitable for the areas such as industrial complex widely.

영상 감시 시스템에서의 개선된 Tearing 현상 방지 디스플레이 시스템

이동학,정연권,정선태 崇實大學校 生産技術硏究所 2001 論文集 Vol.31 No.-

In display systems employing an analog monitor, the tearing artifact such that an window screen is divided into two parts showing different scenes can occur when the change of scenes in the moving pictures is very fast, but the frame buffer's refresh rate does not match the monitor's scanning frequency. In the DVR system, a recently popularized visual monitoring system, the tearing artifacts becomes more serious since the frame buffer's refresh rate is vey high due to the requirement of multi-channel display. In this paper, we propose an improved display system for windows-based DVR systems which prevents the tearing artifacts without daterioration of display speed perfromance. The efficiency of the proposed display system is verfied through experiments.

Multiple Auditory Steady-State Response(MASTER)을 이용한 유소아의 청력검사

이학선,김시찬 한국음성과학회 2004 음성과학 Vol.11 No.4

This study was done to compare thresholds between those of Auditory Brainstem Response (ABR) with clicks or tonebursts and Multiple Auditory Steady-State Response (MASTER). The results would give a promising tool for evaluating frequency-specific hearing sensitivity in infants or young children. The correlation coefficient value between the click ABR thresholds and MASTER thresholds at carrier frequencies, 500, 1,000, 2,000 Hz, and 4,000 Hz was obtained at Pearson 0.91, 0.94, 0.93, and 0.91.

詩人 韓龍雲論 : 「님의 沈默」재조명

김선학 우리말글학회 2002 우리말 글 Vol.24 No.-

I pointed out in this treatise that Youngun Han had the stronger poetry spirit than other poets in his age. We can see that he used Buddhism to respond to the fascists, Japanese colonists. In colonic situation, his attitude to give kindness to Korean people made his poems preaching and prose style. Responding to historical actuality, he agreed the poetic individual with his poetic language. This agreement made a symbolic growth in responding to the colonic situation. And it made him get a special prose poems.(Dongguk University)

도로명 및 건물번호 부여사업에서 고해상도 위성영상의 활용

배선학,김창환,신영철 한국지리정보학회 2003 한국지리정보학회지 Vol.6 No.4

본 연구는 현재 각 기초 지자체 단위로 시행하고 있는 도로명 및 건물번호 부여사업의 현장조사 및 기본도 검수를 위하여 고해상도의 위성영상을 활용하는 것을 그 내용으로 한다. 대부분의 지방자치단체는 기존의 축척 1/1,000과 1/5,000 수치지도록 제작된 기본도에만 의존하여 현장조사를 진행하여 왔으며, 이 과정에서 현장조사자의 사전지식 부족 및 기본도의 현시성 결여 등으로 인하여 사업초기 상당한 시행착오를 겪는다. 따라서 본 연구는 도로명 및 건물번호 부여 사업에서 기존의 국립지리원 수치지도에 근거한 기본도를 보완하기 위한 방안으로 고해상도 위성영상의 활용가능성을 제시한다. 그 동안의 위성영상은 낮은 해상도로 인하여 상대적으로 면적이 좁고 토지 이용이 조밀한 우리나라의 실정에 적합하지 못하였으나, 1m 내외의 공간해상도를 지니는 고해상도 위성영상이 상용화되면서 우리나라에서도 점차 그 활용 분야가 넓어지고 있다. 또한 기존의 vector기반의 수치지도와의 상호 보완을 위한 연계 활용도 점차 증가하고 있다. 연구 결과, 도로명 및 건물번호 부여사업에서 고해상도 위성영상의 활용은 그 결과적인 측면뿐만 아니라 비용적인 측면에서도 타당성이 있는 것으로 나타났으며, 본 사업을 통하여 구축된 위성영상 자료는 도시계획 등 타 분야에서도 활용이 가능하여 지방자치단체의 기초 공간자료로서도 활용도가 높다. The point of this research in the use of the high resolution satellite image for local government's new address system, as well as spatially field investigation support and base map error finding. Most local governments use scale 1/1,000 and 1/5,000 digital map for base map and field investigation. But field investigator's knowledge insufficiency and the lack of base map's currency make things too difficult from the beginning of the project. As the way of solving this problem, this research offers the use of the high resolution satellite image in new address system with cadence data of digital base map. Until now satellite image is not suitable for our situation because it has low resolution. But this problem was solved for 1m space resolution satellite image and it is being applied wider and wider. Now vector data and Raster data are integrated for complimenting of each weak point. In this study the use of the high resolution satellite image in new address system is expected to improve the quality of the results and reduce the expenses. In addition the satellite image can use local government's fundamental data.

암모니아 공간분포 조사를 위한 Passive Sampler 개발에 관한 연구

김학민,이범진,김선태 대전대학교 환경문제연구소 2001 환경문제연구소 논문집 Vol.5 No.-

Passive and active samplers are widely deployed for measuring gaseous pollutants such as nitrogen dioxide, sulfur dioxide and ozone in urban and rural air, however odorous compounds like ammonia, hydrogen sulfide are rarely deployed, because they are easily changed by circumstance conditions and perceived that they need a large number of measuring sites to assess mean concentration over the area. So, it is considered that the odor related phenomena could not be easily defined by cost-effective and convenient method. In this study, we developed the new sampling tool for ammonia evaluation in ambient air and the results of evaluation for evaluate the suitability of developed passive sampler for the measurement of daily averaged ammonia concentrations and spatial distribution survey are presented. Three types of absorbing solutions, filters and caps were tested at laboratory condition and the conversion factor, precision and suitability of the samplers were derived from triplicated measurement at paper mill. It is defined that for absoubing ammonia, 2% of phosphoric acid and glycerine mix(1:1) solution and chromatography filter are suitable and rubber cap is unsuitable to use during sampling and storage period. The conversion factor was derived 7.0μA at ordinary ambient air by comparison with reference method(indo-phenol method) at three different conditions. The calculated results of standard deviation among the samplers were lower than 2ppb at 86% sampling sites of total 40 sites and we could recognize the ammonia sources and variation with change of wastewater treatment plant process. Therefore the developed passive samplers are appropriate to survey ammonia spatial distrivution.