• Title/Summary/Keyword: King Sejong

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The Absorbance and Fluorescence of Chlorophyll-b in Organic Solvents (II) (유기용매 중에서 Chlorophyll-b의 흡광 및 형광 (제2보))

  • Choong-Hwa Lee;Myong-Suk Kim;Koo-Chun Chung;Myon-Yong Park
    • Journal of the Korean Chemical Society
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    • v.26 no.4
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    • pp.224-228
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    • 1982
  • The wavelength of chlorophyll-b on the absorbance and fluorescence emission were shifted to the longer depending on the increasing of solvent polarities but fluorescence excitation spectra were not. The presence of chl-b oligomers and monomers were identified by the specra of fluorescence emission. Fluorescence excitation, absorbance and the measurement of its intensities vs. the concentration of n-prOH added to chl-b solution. The calibration curve of chl-b solution were not obeyed to Beer's law in the range of concentrated soln. because of the presence as the oligomers.

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The Absorbance and Fluorescence of Chlorophyll-a in Organic Solution (I) (유기용매 중에서 Chlorophyll-a의 흡광 및 형광 (제1보))

  • Choong-Hwa Lee;Byong-Soo Kim;Jung-Hee Kang;Myon-Yong Park
    • Journal of the Korean Chemical Society
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    • v.26 no.4
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    • pp.218-223
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    • 1982
  • The absorbance and fluorescence yields of chl-a vs. concentration of n-prOH in diethyl ether, benzene and iso-octane were shown the characteristic point which chl-a structures are changed to monomer by the solvation of oligomer, and the spectral differences of fluorescence excitation between oligomer and monomer were identified by fluorimetry. All the maximum wavelength of absorbance, fluorescence excitation and fluorescence emission were shifted to longer wavelength. The ratios of soret/red band were depended on the band intensions and the polarities of solution in organic solvents mixed with n-prOH.

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Immunological Assay to Detect Irradiated Beef

  • Lee, Ju-Woon;Yook, Hong-Sun;Lee, Hyun-Ja;Kim, Jung-Ok;Byun, Myung-Woo
    • Preventive Nutrition and Food Science
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    • v.6 no.2
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    • pp.91-95
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    • 2001
  • Competitive indirect enzyme linked immunosorbent assay (Ci-ELISA) was used to obtain the preliminary data for the detection of irradiated beef. Ci-ELISA was individually formatted with polyclonal antibodies produced from 2 kinds of bovine proteins, myosin and bovine serum albumin (BSA). Beef round, loin and tender loin were vacuum-packaged and subdivided into 3 groups of 1) irradiation; 2) irradiation and chilled at 4$^{\circ}C$ for 7 day; 3) irradiation and frozen at 2$0^{\circ}C$ for 2 months to observe the changes under different storage and/or distribution conditions. Irradiation was performed at 3, 5 and 7 kGy. Protein solutions prepared from the sample were tested by formatted Ci-ELISA. Detected concentrations of myosin and BSA decreased with the increased irradiation dose in all samples with different reduction rates. Myosin was more susceptible to freezing than BSA. Samples irradiated at 5 kGy or above could be differentiated from non-irradiated ones by Ci-ELISA. These results indicate that immunological assay can be used as a detection method for irradiated beef.

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Effects of Temperature and Sugar Addition on The Flavor of Ginseng Tea (온도 및 당의 첨가가 인삼차의 향미에 미치는 영향)

  • Kim, Woo-Jung;Sung, Hyun-Soon
    • Korean Journal of Food Science and Technology
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    • v.17 no.4
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    • pp.304-310
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    • 1985
  • Sensory comparison of the flavor of ginseng teas prepared from concentrated white or red ginseng extract was investigated by multipl comparison test and quantitative descriptive analysis (QDA) on 12 selected descriptions. The white ginseng tea revealed higher intensities in odor and taste than those of red ginseng tea, particularly on earthy and sweet odor and bitter and astringent taste. Increase in sample temperature from $2^{\circ}C$ to $80^{\circ}C$ caused a general increase in aroma and bitter taste. When sucrose added into 3% ginseng tea solution, all of the taste descriptions, most significantly on bitterness and astringency, scored lower except sweetness while the aroma was affected a little.

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Temperature Dependence of Initial Adsorption Rate of Soybean (콩의 초기 흡습속도의 온도의존성)

  • Kim, Jong-Goon;Kim, Sung-Kon
    • Korean Journal of Food Science and Technology
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    • v.21 no.3
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    • pp.360-363
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    • 1989
  • The initial moisture adsorption of soybeans was examined under the conditions : RH, 57-86% ; temperature, $16^{\circ}-34^{\circ}C$, and storage time, 100 hours. The changes in moisture content as a function of time held a relation: log dw/dt=b log t + log a, where w is the moisture content (%, db), t is time (hour) and a and b are the parameters which were calculated from the experimental data. The calculated moisture content from the equation agreed well with the measured moisture content. The activation energy of initial adsorption rate was about 15500cal/g-mole in all soybeans. The initial adsorption rate at temperature $16^{\circ}-28^{\circ}C$ could be estimated from a following equation : log(log dw/dt)=-15500/2.303RT.

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GPR Investigation of Glacier on Livingstone Island, Antarctica (GPR을 이용한 리빙스톤섬 빙하층 탐사)

  • Lee, Joo-Han;Jin, Young-Keun;Hong, Jong-Kuk;Hong, Sung-Min;Kim, Yea-Dong
    • Journal of the Korean Geophysical Society
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    • v.8 no.2
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    • pp.63-66
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    • 2005
  • With the aim of global environmental monitoring we carried out GPR (Ground Penetrating Radar) surveys at the Livingstion Island in Antarctica. Research area is near the Mt. Charra (340 m) in Livingston Island which is located 80 km to the southwest of the King Sejong Station. We have collected 5 lines of GPR data. Two kinds of survey, CMP (Common Midpoint) surveys and common offset profiles, were performed. We classified the glacier into the three layers using electromagnetic velocity of the ice and reflection characteristic. The depth of glacier reached about 80∼110 m. Some reflectors showed the evidence of the water filled englacial drainage and volcanic ash-layers.

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Effect of Ethanol Concentration on Index Components and Physicochemical Characteristics of Cinnamon Extracts (에탄올의 농도가 계피추출액의 지표성분 및 품질특성에 미치는 영향)

  • Kim, Na-Mi;Yang, Jae-Won;Kim, Woo-Jung
    • Korean Journal of Food Science and Technology
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    • v.25 no.3
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    • pp.282-287
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    • 1993
  • The effect of ethanol concentration for extraction of cinnamon on chemical and physical properties of the extracts was investigated. The cinnamon was extracted at $80^{\circ}C$ for 5 hours. High contents of cinnamic acid, aldehyde, eugenol and antioxidant activity were found in the extracts of $60{\sim}90%$ ethanol. Free sugar, tannin, degree of browning and total solids were measured relatively high in 70% ethanol extract while total amino acids and minerals were increased as the ethanol concentration decreased. The overall data suggested 70% ethanol as the most effective solvent for cinnamon extraction.

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Flux Footprint Climatology and Data Quality at Dasan Station in the Arctic (북극 다산기지에서의 플럭스 발자취 기후도와 플럭스 자료 품질)

  • Lee, Bang-Yong;Choi, Tae-Jin;Lee, Hee-Choon;Yoon, Young-Jun
    • Journal of the Korean Geophysical Society
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    • v.8 no.4
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    • pp.201-205
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    • 2005
  • Turbulent fluxes of heat, water vapor, and CO2 have been measured since August, 2003 at Dasan Station (78o 55’ N, 11o50’E) in the Arctic. These data can allow us to better understand the interactions between the Polar ecosystems and the atmosphere together with those at King Sejong Station in the Antarctic. Due to the buildings and measurement platforms around the flux tower, it is required to evaluate how they influence measured flux data. By using one-year turbulence statistics data and footprint model, flux footprint climatology was analyzed together with data availability. The upwind distance of source area ranged from 150 to 300 m, where the buildings and measurement platforms existed. However, flow distortion due to them may be not a major factor to reduce the data availability significantly. Based on, the dominant wind direction of SW and footprint climatology, the location of flux tower is considered suitable for flux measurement.

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A Study on the Characteristics of Housing Environment at Namdo Castle in Chindo (진도 남도석성의 주거환경특성에 관한 기초조사연구)

  • 임만택
    • Journal of the Korean housing association
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    • v.15 no.1
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    • pp.15-23
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    • 2004
  • Namdo castle located in Namdong-ri, Imhoi-myon, Chindo-kun Cholla South Province is 610 meters long 5.3 meters high, and 20,000 square meters wide. This castle hasn't an accurate built year record. But there is still a great possibility of its having been built in the Sam-kuk (Three Kingdoms) era (around A.D. 300∼700). This castle seems to have been enlarged after 1438 because Manho-pu (lower unit of government office in Chosun dynasty) in Namdopo first appeared in the 20th year of King Sejong's reign. The main office, guest rooms, official residency of the castle were removed during the Japanese colonial rule and the land of the castle was sold separately for housing in the name of liquidation of Korean history. Thus, the Namdo castle that served as a naval base to defeat the Japan-based pirates' invasions throughout the Chosun period disappeared. As of Oct. 2000. 28 houses including a town hall occupy the site of the castle and are expected to be removed according to the restoration program of the castle. In this thesis, I'd like to study about the characteristics of housing in the site of the castle. To figure out the direction of the restoration program. I interviewed a few relating public officials in Chindo County Office. To examine the characteristics of housing, I surveyed the residents for the surrounding of housing.

A Study about Historical Research on Jebok(ritual robes) of Jirisan Namakje (지리산 남악제(南岳祭) 제례복식(祭禮服飾)에 관한 제언)

  • Lee, Yeong-Ju;Lee, Sang-Eun
    • Journal of the Korea Fashion and Costume Design Association
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    • v.16 no.4
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    • pp.49-62
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    • 2014
  • This study is intended to historical research the Jebok(ritual robes) of Jirisan Namakje. Joseon Dynasty established Five Manners as a country-ruling policy on the basis of Confucianism, the religious clothes-wearing method has been established through Sejong Silok Five Manners and the ritual robes system of all the government officials has been handed down to the end of Joseon Dynasty. The ritual robes of all the government officials was worn at the timed of the religious ceremony included ritual manners, and ritual robes are composed of Yanggwan, Ui, Sang, Jungdan, Peasul, Hwan, Wu(a cord, a leather belt, a belt, jade, a mace, Bangsimgokryeong, Mal, Ri, etc., and the rank was classified by the number of the veritical line of Ynaggwan, a leather belt, Hwan, Wu and jade and typeof a mace. "Jongmyouigwe" during the reign of king Sukjong described exactly the Uicha and textile of the ritual robes at that time, the textile Ui used Heukju as same as "Jegiakgidogamuigwe", and jade was used only in case of the first rank ritual official and other government officials did not wear jase. Also, it was revealed that all officials used a wooden mace, and in case of Husu, the first rank ritual official used Jikseong and other official used a picture.

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