• Title/Summary/Keyword: 연하

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Utility and Care Patterns of Lotus Shown in Classic Poetries and Proses, Painting (고전 시문과 회화를 통해 본 연(Nelumbonucifera)의 활용과 애호 행태)

  • Kim, Myung-Hee;Hong, Hyoung-Soon
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.29 no.4
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    • pp.1-13
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    • 2011
  • The purpose of this study is to consider practical examples of the method of utilizing plant material 'lotus' used by the ancients, and the value and meaning they wanted to get from it. The method of this study to do this is descriptive study to consider and interpret poem and painting reflecting impression and concept world of lotus. Summary of this study is as follows. First, ornamental value of lotus could be divided in effect of group plant and detail value held by the flower, the leaves and the stem. Especially, group plant lotus in large site provides unique landscape differentiated form other flowering plants. As well, another feature of lotus is its high ornamental value spread in detail elements including the flower, the leaves, the stem and the lotus seed. Second, fragrance expressed 'Hyang-won-ik-cheong(香遠益淸)' is an important charm of lotus. Lotus was utilized as olfactory element providing fragrance. The ancients considered lotus fragrance not only for enjoy but as symbolic object comparing noble man's dignity so that they expressed it in poem and painting. Third, lotus was utilized as acoustical element. That is, the sound of raindrops harmonizing the surface of water and wide lotus leaves was called 'hearing lotus fond and rain', enjoying it as classic grace. Fourth, summer play lotus sightseeing was called mind wash up meaning 'washing the mind polluted by the mundane world'. Such poetic taste was widely enjoyed by various classes from general public to royal family. Besides, poetic taste related with lotus is the method of drinking alcohol using the feature of big lotus leave and vacant stem, called 'Beog-tong-ju(碧筒酒)'. And in the Joseon dynasty period, when the distinction between the man and the woman influenced by Confucian, lotus seed and 'lotus collecting song' was important sign to express romance between man and woman. Lotus has been enamored by wide classes transcending cultural background as thought and religion since ancient times. Due to such reasons, various symbolic meaning of lotus and planting examples related to religious facilities as temples could not be considered in various manner is limitation of this study, and which is research project for the future.

도농교류-농업소득연계시리즈 - 한농연 우수사업사례 전파 - 한농연서산시연합회 부설 '서농유통'

  • Park, Jin-Cheon
    • 월간 한농연
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    • s.81
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    • pp.51-58
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    • 2009
  • 한농연은 전국각지의 사업우수사례를 모아 취재하고 소개하여 모든 한농연 회원들이 정보를 공유하고 더욱 발전되는 한농연을 만들고자 하는 취지로 이번 연재를 기획했다. 이번 연재를 시작으로 전국 각지의 우수사례들을 소개하고 정보를 공유하여 잘된점은 칭찬하고 잘 안되는 점은 타산지석으로 삼아 사업적인 측면에서도 농업계에서 우뚝서는 한농연이 되기를 바란다. 우수사업사례 첫 번째 사례로 충남서산연합회를 소개하고자 한다.

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전치부 심미 임프란트에서 연조직 인상 채득법

  • Lee, Jong-Hyeok
    • The Journal of the Korean dental association
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    • v.47 no.4
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    • pp.206-210
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    • 2009
  • 앞에서 임프란트 주변 연조직의 형태를 작업모형에서 재현하기 위한 몇가지 방법을 살펴 보았다. 심미성이 점차 강조되고 있는 추세에 비추어 단순하게 치아의 심미성 보다는 전반적으로 연조직과 경조직이 잘 조화되는 수복물이 요구되고 있다. 잘 만들어진 작업모형은 좀 더 심미적이고 안정된 결과를 얻을 수 있도록 도움이 될 것이다.

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An Acoustic study of Korean Lenis Stop Voicing -in relation to Prosodic Structures- (한국어 파열연자음 유성화에 관한 음향음성학적 고찰 -운율구조와 관련하여-)

  • Kim Hyo Sook;Kim Sun Ju;Kim Sunmi
    • Proceedings of the Acoustical Society of Korea Conference
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    • autumn
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    • pp.383-386
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    • 1999
  • 이 논문은 한국어 파열연자음이 유성음 환경에서 유성음화하는 현상을 운율구조와 관련해서 음향음성학적으로 고찰하는 것을 목적으로 한다. 이 논문에서는 첫째, 음성적 자질로서나 청각적인 판단에 의해서나 무성음과 유성음의 이분법으로 나뉘는 것을 음향적 고찰을 통하여 각각을 하위의 범주로 나누었다. 문장 안에서 파열연자음이 음향적으로 실현될 때 각각의 범주가 어느 정도의 빈도수로 출현하는지를 살펴보았다. 둘째, 한국어 파열연자음은 어절 초에서는 무성음으로 실현되나 앞뒤에 유성음이 오는 경우에는 유성화되는 음운규칙이 있는데, 음향적인 분석을 통하여 앞뒤에 유성음이 온다는 조건만으로 설명할 수 없는 예들을 발견하였다. 그리하여 인접음절(특히 앞음절에 오는 분절음의 특성)과 운율구조(액센트구 내에서의 위치, 억양구경계의 유무)를 함께 고려하는 파열연자음 유성화규칙의 조건을 제안하였다.

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연 X-선 결상현미경 시스템의 광학계 및 광량설계

  • Nam, Gi-Yong;Kim, Gyeong-U;Kim, Gyu-Gyeom;Gwon, Yeong-Man;Yun, Gwon-Ha;Cheon, Gwon-Su;Na, Seung-Yu
    • Proceedings of the Optical Society of Korea Conference
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    • 2004.02a
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    • pp.70-71
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    • 2004
  • 40nm의 해상도를 갖는 연 X-선 결상현미경 시스템의 광학계를 결정하였다. 연 X-선 장치에서의 대물렌즈로써 대상시료내에 빔 초점(focusing)를 위한 광학계로 두개의 Ellipsoid형 광하계로 설계하였다. 또한 접안렌즈로는 Fresnel zone plate로 하여 설계 및 제작하였다. 또한 연 X-선이 지나가는 빔 경로 상에 놓여진 다양한 물질들에 대한 각각의 X-선 광자의 조사선량을 계산하였다. 살아있는 세포를 관찰하고자하는 본 장치의 목적에 부합되기 위한 세포가 피폭되는 임계 방사선 조사선량의 관점에서 연 X-선의 선원의 세기와 검출기의 증폭효율을 고찰하였다.

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Lead Concentrations of Pigeon's Tissue as Indicator of Lead pollution in Air and Soil (대기 및 토양 오염의 지표로서 비둘기 조직의 연농도)

  • Byun, Yung-Woo;Hwang, Tae-Yoon;Lee, Jung-Jeung;Kim, Chang-Yoon;Chung, Jong-Hak
    • Journal of Preventive Medicine and Public Health
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    • v.29 no.1 s.52
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    • pp.15-26
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    • 1996
  • It has been studied that a variety of fauna and flora are sensitive biological indicators which reflect the severity of regional pollution of heavy metals, but in the center of part of Taegu City the controversial issue of lead poisoning attributable to the atmosphere which contains an increased concentrations of lead has been raised recently, it is usually hard to find suitable plants or animal in the areas with heavy traffic. Pigeons are ubiquitous in and around Taegu City area, inhabiting even the most densely populated areas with heavy traffic. With its small body size, high metabolic turnover, and rather limited mobility, a pigeon, as a biological indicator is expected. This study was conducted to monitor lead pollution in the Taegu and Kyongju City in Korea. We measured the lead content of the various tissue of three groups of feral pigeon(Columba livia) and soil and atmospheric lead concentration. First group was obtained in heavy traffic area in Taegu City, the second group was obtained a park in Taegu City and the third group was obtained light traffic area in Kyongju City. The air and soil lead concentration of heavy traffic area in Taegu City was $0.11{\mu}g/m^3,\;4.96{\mu}g/g$, that of park in Taegu City was $0.05{\mu}g/m^3,\;2.65{\mu}g/g$ and that of light traffic area in Kyongju City was $0.03{\mu}g/m^3,\;0.01{\mu}g/g$. The lead content of lung, blood, kidney, femur and liver of feral pigeons in heavy traffic area in Taegu City was significantly higher than pigeons obtained in a park in Taegu City and low traffic density area in Kyongju City(p<0.01). But stomach lead content of three group did not reflect a significant difference. In this study positive correlation was found between atmospheric lead concentrations and the concentration of lead in the pigeon's lung(r=0.5040, p<0.001), blood(r=0.3322, p<0.01), kidney(r=0.4824, p<0.001), femur(r=0.7214, p<0.001) and liver(r=0.4836, p<0.01). We can also found positive correlation between soil lead concentrations and the concentration of lead in the pigeon's femur(r=0.4850, p<0.001), kidney(r=0.4850, p<0.001) and liver(r=0.4386, p<0.01). In the pigeon's tissue there were significant correlations between concentration of lead in the blood and kidney(r=4818, p<0.001), femur(r=0.6157, p<0.001) and liver(r=0.3889, p<0.001). In conclusion, at the heavy traffic area in Taegu City, lead concentrations found in the atmosphere and soil are reflected in the lead concentrations of different tissue of urban pigeons. It is suggested that the tissue of pigeons can be good biological indicators of environmental lead pollution.

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Fatigue strength of stud shear connector considering bedding layer thickness in precast deck composite bridges (프리캐스트 바닥판 합성형 교량에서의 베딩층의 두께를 고려한 전단연결재의 피로강도)

  • Ryu, Hyung Keun;Shim, Chang Su;Chung, Chul Hun;Chang, Sung Pil
    • Journal of Korean Society of Steel Construction
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    • v.14 no.1
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    • pp.113-120
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    • 2002
  • A shear connection in composite bridges with precast decks has considerable characteristics different from cast-in-place deck bridges such as shear pocket and bedding layer. Thus, it is necessary to build design basis of the shear connector in precast decks through the experiments. In order to estimate fatigue life of shear connector in precast deck bridges, push-out fatigue tests were conducted with parameter, bedding layer thickness. As a result of the tests, failure modes of shear connector were observed. Consequently, empirical S-N curve equations of stud shear connector in precast deck bridges were proposed in this paper.

A Study on Trim Flight Condition for a Korean Traditional Bangpae Kite with Low Aspect Ratio (작은 가로세로비를 가진 전통 방패연의 평형 비행 조건 연구)

  • Kang, Chi-Hang
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.39 no.9
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    • pp.871-876
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    • 2011
  • In this paper, the equilibrium flight conditions of a Korean Traditional Bangpae Kite with low aspect ratio were analyzed by it's aerodynamic data of wind tunnel test. The data of aerodynamic forces and center of pressure of the Kite were used to calculate the relative length of bridles to satisfy the condition of settling the kite to the static equilibrium steady state between ${\theta}=30^{\circ}{\sim}60^{\circ}$. From this equilibrium flight performance analysis, we obtained ($0.88{\pm}0.02$)c of the rear bridle length corresponding to 0.88c of fixed front bridle length. These results were exact agreement with the relative bridle lengths by Korean classical method.