• 제목/요약/키워드: bluish-green

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순수 폴리올레핀 소재용 청록색 염료의 합성 (Synthesis of Bluish-green Dyes for Pure Polyolefin Fibers)

  • 조나영;이준헌;김태경
    • 한국염색가공학회지
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    • 제28권3호
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    • pp.156-163
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    • 2016
  • The 6 novel super hydrophobic bluish-green dyes, showing the maximum absorption at 600~650nm, were synthesized to dye polyolefin fibers such as polypropylene and high strength polyethylene fibers. Their absorption spectra appeared almost the same at visible range, which meant the length of alkyl substituents did not affect on color appearance of the dyes. The optimum length of alkyl group was determined as hexyl substituents from the practical point of view. From the dyeing results, the optimum dyeing condition was $130^{\circ}C$ for 1 hour. The good fastness ratings to washing, rubbing were obtained showing 4-5 for both fibers. Light fastness was obtained also good rating 4 for both fibers.

Penicillium corylophilum에 의한 큰느타리버섯(Pleurotus eryngii) 푸른곰팡이병의 발생 (Occurrence of Bluish Green Mold of Pleurotus eryngii by Penicillium corylophilum)

  • 조우식;류영현;김승한;윤재탁;최부술
    • 한국균학회지
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    • 제27권6호
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    • pp.412-414
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    • 1999
  • 최근 국내 큰느타리버섯 재배농가가 증가하면서 병해의 발생이 문제점으로 나타나고 있다. 본 연구에서는 큰느타리 버섯의 자실체에 발생하는 푸른곰팡이 병반으로부터 Penicillium sp.균을 분리하여 동정하였고 생리적 특성을 조사하였다. 분리된 Penicillium sp.균의 형태적 특성을 조사한 결과, 분생포자는 타원형이고 크기는 $2.3{\sim}3.4{\times}2.6{\sim}3.2\;{\mu}m$였다. 분생자병은 균사로부터 one-stage branch 모양을 형성하고, metulae는 $2{\sim}4$개로 크기가 $10{\sim}l8{\times}2.5{\sim}3.0\;{\mu}m$이며, phialides는 플라스크상이고 크기가 $9{\sim}13{\times}2.2{\sim}2.8\;{\mu}m$였다. Czapek 배지에서 배양할 경우 $25^{\circ}C$에서 7일에 균총이 21 mm 성장했으며, 균총의 색은 회녹색이었다. 이상과 같은 형태 및 배양적 특징으로 공시균을 Penicillium corylophilum로 동정하였고 이균을 상처접종하였던바 $6{\sim}7$일만에 재배농가에서와 동일한 증상을 나타내었다.

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동화 속 악녀 의상의 색채와 이미지 분석 (An Analysis of a Wicked Women Costume Colors and Images in a Fairy Tale)

  • 남윤숙;김복희
    • 한국의상디자인학회지
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    • 제11권3호
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    • pp.73-85
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    • 2009
  • This study aims to analysis the costume colors and images of wicked women in fairy tale. For the most costume applied to the relationship between color kind, brightness, and saturation. so, this study investigated the costume colors put on by wicked women in fairy tales and analysed and interpreted them by inputting data. First, mostly the costume colors applied to transfer the image of wicked women were dark blue, red, violet, bluish green, green, and purple. Second, the colors feeling cool and cold such as dark blue, bluish green, green, and blue were applied more frequently than the colors feeling warm and mild. Third, the deep and dark color tones with low brightness and low saturation affected by the mixture ratio of black were applied frequently for the use of wicked woman colors. Fourth, the colors mentioned above have the meaning of men, powerful, authority, cruel, angry, brutal, mysterious, and evil, that have the property of attacking and strong wicked women. They were expressed by the costume put on by wicked women.

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ZnS/$Na_3AlF_6$/ZnS 박막의 Cu 반사층을 이용한 광 특성 (The optical properties of ZnS/$Na_3AlF_6$/ZnS multi-layered thin film with Co reflection layer)

  • 김준식;장건익
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2008년도 추계학술대회 논문집 Vol.21
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    • pp.322-323
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    • 2008
  • Multi layered thin films with ZnS/$Na_3AlF_6$/ZnS were deposited on glass substrate by thermal evaporator precess and simulated by using EMP(Essential Macleod Program). EMP is a comprehensive software package to design and analyse the optical characteristics of multi-layered thin film. ZnS and $Na_3AlF_6$ were selected as a high refractive index and low refractive index material respectively. Additionally Cu was chosen as mid reflective material. Optical properties including color effect were systematically studied. in terms of different optical thickness of low refractive index material. The optical thickness of $Na_3AlF_6$ was changed as 0.25, 0.5, 0.75 and $1.0\lambda$. The film with 0.25, 0.5, 0.75 and $1.0\lambda$. of optical thickness showed mixed color range between bluish green and red purple, yellowish green and bluish green, purple and mixed color range of green and purple respectively.

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Synthesis and Electroluminescent Properties of Cabazolyl Vinylene Derivatives

  • Seo, H.J.;Park, H.C.;Lee, S.E.;Park, J.W.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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    • pp.952-954
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    • 2003
  • We report the photo-(PL) and electroluminescence (EL) properties of new conjugated compounds based on carbazolyl vinylene moiety, 3,3'-(1,4-phenylene di-2,1-ethenediyl) bis[9-ethyl-(E,E)-9H-carbazole](PEEC) and 3,3'-([1,1'-biphenyl]-4,4'-diyldi-2,1-ethenediyl)bis[9-ethyl-9H-carbazole](BPEEC), as emitting materials. The ITO/m-MTDATA/NPB/BPEEC/Alq3/LiF/Al device shows bluish-green EL spectrum at 490nm and turn-on voltage at 8V. PEEC shows bluish-green EL around ${\lambda}$ max=496nm and turn-on voltage at 6V and 2.4 Cd/A efficiency in ITO/m-MTDATA/NPB/PEEC/Alq3/LiF/Al device.

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Fully Substituted Ethylene as a New Class of Efficient Sky-Blue Emitting Materials for OLEDs

  • Kim, Soo-Kang;Park, Young-Il;Park, Jong-Wook;Kim, Kyung-Soo;Choi, Cheol-Kyu;Lee, Sang-Do
    • Journal of Information Display
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    • 제8권1호
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    • pp.10-13
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    • 2007
  • We synthesized new blue and bluish green emitting materials by using fully substituted ethylene moieties. Multi-layered EL devices were fabricated with synthesized materials and evaluated in terms of emission color and luminescence efficiency. TBBPE[EML 2] device showed bluish-green CIE value of (0.236, 0.412) and 5.02cd/A at $10mA/cm^2$. BPBBPE[EML 3] device also showed sky-blue CIE value of(0.218, 0.355) and 2.31cd/A at $l0mA/cm^2$.

백색 LED용 청록색 BaSi2O2N2:Eu2+ 형광체의 합성 및 응용 (Synthesis and Application of Bluish-Green BaSi2O2N2:Eu2+ Phosphor for White LEDs)

  • 지순덕;최강식;최경재;김창해
    • 한국재료학회지
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    • 제21권5호
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    • pp.250-254
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    • 2011
  • We have synthesized bluish-green, highly-efficient $BaSi_2O_2N_2:Eu^{2+}$ and $(Ba,Sr)Si_2O_2N_2:Eu^{2+}$ phosphors through a conventional solid state reaction method using metal carbonate, $Si_3N_4$, and $Eu_2O_3$ as raw materials. The X-ray diffraction (XRD) pattern of these phosphors revealed that a $BaSi_2O_2N_2$ single phase was obtained. The excitation and emission spectra showed typical broadband excitation and emission resulting from the 5d to 4f transition of $Eu^{2+}$. These phosphors absorb blue light at around 450 nm and emit bluish-green luminescence, with a peak wavelength at around 495 nm. From the results of an experiment involving Eu concentration quenching, the relative PL intensity was reduced dramatically for Eu = 0.033. A small substitution of Sr in place of Ba increased the relative emission intensity of the phosphor. We prepared several white LEDs through a combination of $BaSi_2O_2N_2:Eu^{2+}$, YAG:$Ce^{3+}$, and silicone resin with a blue InGaN-based LED. In the case of only the YAG:$Ce^{3+}$-converted LED, the color rendering index was 73.4 and the efficiency was 127 lm/W. In contrast, in the YAG:$Ce^{3+}$ and $BaSi_2O_2N_2:Eu^{2+}$-converted LED, two distinct emission bands from InGaN (450 nm) and the two phosphors (475-750 nm) are observed, and combine to give a spectrum that appears white to the naked eye. The range of the color rendering index and the efficiency were 79.7-81.2 and 117-128 lm/W, respectively. The increased values of the color rendering index indicate that the two phosphor-converted LEDs have improved bluish-green emission compared to the YAG:Ce-converted LED. As such, the $BaSi_2O_2N_2:Eu^{2+}$ phosphor is applicable to white high-rendered LEDs for solid state lighting.

색각이상자의 색채 감성 연상 (Color vision defectives' color emotion association)

  • 우성주;박종욱
    • 감성과학
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    • 제16권4호
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    • pp.557-566
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    • 2013
  • 본 연구는 색각이상자들의 색채 감성 연상의 실태 조사 목적에서 기획되었다. 정상인 100명과 색각이상자 34명으로 피실험 집단을 구성하였고, 색각이상자를 '적색약' 집단 8명과 '녹색약' 16명으로 세분하여, 좋아하는 색, 행복한 색, 친근한 색, 싫어하는 색, 슬픈 색, 거북한 색, 적극적인 색과 소극적인 색 등 항목에 대해서 먼셀이 제안한 기본 10색 가운데 하나씩만 선택하도록 하였다. 정상인 집단의 좋아하는 색은 파랑과 빨강이고, 행복한 색은 노랑이며, 친근한 색은 초록이었다. 색각이상자 집단은 좋아하는 색으로 파랑을, 행복한 색으로 노랑을, 친근한 색으로 파랑을 선택하였다. 또한 정상인 집단이 싫어하는 색을 청록으로, 슬픈 색으로 파랑을, 거북한 색으로 청록을 선택한 것과 비교하여, 색각이상자 집단은 싫어하는 색으로 청록을, 슬픈 색으로 자주를, 거북한 색으로 청록을 선택하였다. 정상인 집단이 적극적인 색과 소극적인 색으로 빨강과 청록을 선택한 반면, 색각이상자 집단은 각각 빨강과 파랑을 선택하였다. 이는 색각이상자들의 일상생활에 있어서 색채의 왜곡된 수용이 감성왜곡으로 연결되어 일상생활에서의 부정적 요소가 되지 않도록 유도하는 색 구성 작업에 활용되고, 특히 문화콘텐츠 이용 편의성 등에 활용될 수 있을 것이다.

오산 수청동 유적 부장 유리구슬의 전개양상 (Changing Process of the Glass Beads from Osan Sucheong Site in Gyeonggi-do, Korea)

  • 이민희;김나영;김규호
    • 보존과학회지
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    • 제33권5호
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    • pp.331-344
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    • 2017
  • 본 연구에서는 오산 수청동 유적에서 확인된 10가지 색상 중 다수를 차지하는 적갈색, 벽색, 감청색을 연구시료로 선정하여 화학 조성을 중심으로 각 색상별 유형을 분류하고 이에 따른 시기별 전개 양상을 살펴보았다. 유형 분류한 결과, 적갈색과 감청색은 5가지, 벽색은 4가지 유형으로 구분된다. 이를 출토 유구의 시기별로 살펴볼 때, 적갈색은 2가지, 벽색과 감청색은 1가지 유형이 시기의 연속성을 보여 각 색상의 주된 유형으로 판단된다. 주된 유형은 산화알루미늄($Al_2O_3$)의 안정제 함량이 높은 소다유리군인 공통적 특징을 보여 본 유적 조영집단은 지속적으로 유리구슬을 교역한 경로를 가지고 있었을 것으로 추정된다. 또한 오산 수청동 유적은 4세기 후엽 유구에서 다양한 유형이 확인되어 이전시기에 비하여 다양한 유통 경로를 통해 유리구슬이 유입되었을 가능성이 높다고 할 수 있다.

Luminescent properties of magnesium thiogallate phosphor with green emission for LEDs

  • Kim, Kyung-Nam;Kim, Jae-Myung;Choi, Kyoung-Jae;Park, Joung-Kyu;Kim, Chang-Hae
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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    • pp.1331-1333
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    • 2005
  • A magnesium thiogallate phosphor doped with europium was prepared by solid-state method. This phosphor has green emission near 535 nm due to the allowed transition from $4f^65d$ at an excitation state $(T_{2g})$ to $4f^7 (^8S_{7/2}) at a ground state of $Eu^{2+}$ ion. This phosphor shows a wide excitation spectrum from ultra violet (300 nm) to bluish green (515 nm).

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