• Title/Summary/Keyword: orange

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Synthesis and characterization of orange-yellow phosphor for inorganic EL device

  • Chang, Mi-Youn;Lee, You-Hui;Han, Sang-Do;Khatkar, S.P.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07b
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    • pp.1334-1337
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    • 2005
  • Orange-yellow phosphor has been synthesized by solid-state method for inorganic EL devices. Zinc sulfide is used as host material for the phosphor and the phosphor consists of copper and manganese as activators. The dependence of the photoluminescence (PL) and electroluminescence(EL) properties on the copper and manganese concentrations has been investigated.

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염색 표지 방류 방법을 이용한 제주 천제연 하구 실뱀장어 자원량 추정

  • 문형태;이태원;황선도
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2001.05a
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    • pp.406-406
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    • 2001
  • 피부 착색용 중성염료는 부착용 표지 방류가 어려운 자치어를 비롯한 소형어류 표지로 이용되어진다. 이 용도로 널리 이용되어지는 Neutral Red, Bismarck brown, Acridine orange, Sudan black과 Toludine blue로 실험실에서 실뱀장어를 염색하여 관찰한 결과, Sudan black은 염색이 되지 않았고, Toludine blue는 머리 부분만 염색되었으나 수 시간 내에 탈색 되었다. Acridine orange는 1/50,000 농도에 노출하였을 때 24시간 후 100%가 사망하였다. (중략)

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Structural Studies upon the Interactive Effects between Organic Dyestuffs and Polyelectrolytes (Ⅱ). The Interaction of Methylene Blue and Acridine Orange with Chondroitin Sulfate (유기색소분자와 고분자전해질 사이의 상호작용 효과에 관한 구조론적 연구 (II). Methylene Blue 및 Acridine Orange의 Chondroitin Sulfate와의 상호작용)

  • Chong Hoe Park;Moo Soon Park;Hong Lee
    • Journal of the Korean Chemical Society
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    • v.31 no.4
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    • pp.295-300
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    • 1987
  • Spectroscopic studies have been carried out on the metachromatic behavior of methylene blue(MB) and acridine orange(AO) in the presence of chondroitin sulfate A(CSA) and chondroitin sulfate C(CSC). The characteristic changes of the meta-band with the changes of P/D value are discussed in terms of the stacking theory. Quantitative studies on the stacking effect are made to calculate the number of bound molecules of dye per unit molecule of the polyanion. The result shows that MB has stronger stacking effect than AO. A stacking model and the dimension of the bound dyes on the surface of the polyanion are proposed, on the basis of the dimer model of planar aromatic dyes and the most stable conformation of the CSA chain. The model is found to be reasonable in accordance with the experimental results.

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Characterization of the host reaction of some citrus plants with Xanthomonas axonopodis pv. citri, causing citrus bacterial canker disease.

  • Myung, Inn-Shik;Hyun, Jae-Wook;Kim, Kwang-Sik;Lee, Sung-Chan;Lim, Han-Chul
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 2003.10a
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    • pp.120.3-121
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    • 2003
  • Relative degree of resistance of citrus to Xanthomonas axonopodis pv. citri, the causal bacterium of canker, was investigated. Growth rate of a bacterium in leaf tissues after infiltration, disease incidence, and percent of lesion area were compared. By using growth rate[(GR=(At - A$\sub$t-1/)/A$\sub$t-1] host plants were differentiated into susceptible and resistant. Growth rates reached to peak at 40 hrs after inoculation and then declined. The growth rate in leaf tissues of a moderately susceptible cultivar, Citrus sinensis vu. Lane late(sweet orange), was the highest, and those of C. unshiu ${\times}$ C. sinensis(kiyomi), C. junos(yuzu), [(Citrus. unshiu x C. sinensis) x C. reticulata] (shiranuhi), and C. unshiu(satuma mandarin) were similar. This result indicates that the growth rate of the bacterium in leaf tissues can be effectively used for evaluation of disease resistance for citrus plants to X. axonopodis pv. citri. The disease on sweet orange occurred earlier than relatively resistant citrus plants tested. The percent of lesion area on leaf was also higher in sweet orange than those of satsuma mandarin, shiranuhi and kiyomi, and yuzu. The disease severity was highest on sweet orange and followed by kiyomi, shiranuhi, satsuma mandarin, and yuzu.

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Pear Flower Dyeing for Developing the Regional Product in Naju City (나주시 지역특산품 개발을 위한 배꽃의 염색)

  • Baek Jin Ju;Jang Hong Gi;Cho Ja Yong;Im Myung Hee;Park Yong Seo;Yoo Yong Kweon;Park Yun Jum;Heo Buk Gu
    • The Korean Journal of Community Living Science
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    • v.16 no.3
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    • pp.37-45
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    • 2005
  • This study was conducted to investigate the utilization of cut pear branches for dyeing materials, and the dyeability of pear flowers for pressed flowers using red, orange, and green edible pigments. There was a significant difference of E values among 0.1, 0.5 and $1.0{\%}$ diluted solutions of edible pigments for the cut pear branches coming into flowers. In the higher concentrations of dyeing solutions and the longer dyeing periods, a values with the red pigments increased from 2.37 to 31.22, b values with the orange pigments increased from 7.04 to 45.85, and a - values with the green pigments increased from -3.88 to -36. Bloomed pear branches were immersed in diluted solutions with red, orange and green pigments for forty five minutes. Pear branches immersed in $0.1{\%}$ and $0.5{\%}$ diluted solutions bloomed normally, and each of the flowers were dyed in the colors of the dyeing solutions, respectively. The dyeability of the bloomed pear branches immersed in water and dyeing solutions for one hundred and twenty minutes decreased compared with those treated with red, orange and green pigments and dyed immediately. The dyeability of flowers for the cut pear branches dyed immediately after cutting was significantly increased compared with that immersed in water and dyeing solutions.

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Study on the Spectrophotometric Determination of Rare Earth by Ternary Complex Using Xylenol Orange and Surfactant (Xylenol Orange와 계면활성제의 삼성분 착물에 의한 희토류원소의 분광광도법 정량에 관한 연구)

  • Cha, Ki-Won;Park, Chan-Il;Kang, Sun-Hee;Chang, Byung-Du
    • Analytical Science and Technology
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    • v.7 no.3
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    • pp.277-284
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    • 1994
  • The spectrophotometric determination of rare earth elements with XO was investigated in the presence of cetylpyridium chloride(CPC), dodecyltrimethylammonium bromide(DTMAB), cetyltrimetylammonium bromide (CTMAB), Triton X-100 at pH 6.2. The complex between XO and rare earth elements in the presence of cationic surfactants was very stable and more sensitive than in the absence of surfactants. The largest absorbance increase was provided by CTMAB, which was therefore chosen for determination of rare earth elements. REE-XO-CTMAB complex has absorption maxima at 618nm and obeys the Beer's law in the range of 0~0.5 ppm. Molar absorptivity was $1.5{\times}10^5mol^{-1}cm^{-1}l$.

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Chemoprevention of Azoxymethane Induced Colon Cancer in Rats by Feeding Grange Juice, Soy, Wheat Bran and Flaxseed

  • Om, Ae-Son;Yuko Miyagi;Chee, Kew-Man;Maurice R. Bennink
    • Nutritional Sciences
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    • v.2 no.2
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    • pp.71-75
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    • 1999
  • Epidemiologic studies consistently demonstrate an inverse relationship between risk for colon canter and consumption of fruits and vegetables. Wheat bran, flax and soy contain dietary fiber and phytochemicals, such as lignans and isoflavones, that may inhibit colon carcinogenesis. Orange juice contains hesperidin, a flavanone glucoside that protects against colon carcinogenesis. This study determined if feeding orange juice, wheat bran, soy and flaxseed (combined diet) would inhibit azoxymethane (AOM) induced colon cancer. Cancer was initiated in male Fisher 344 rats by injecting 15 mg AOM/kg of weight at 22 and 29 days of age. One week after the second AOM injection, rats (N = 30) in the combined diet group received dry diet containing wheat bran (4%), soy with ethanol soluble phytochemirals(13%) and flaxseed (8%) and orange juice replaced drinking water. The control group remained on the control diet and received distilled water to drink. The rats were killed 28 weeks later, and colon tissues and tumors were removed for histologic analysis. Feeding the combined diet significantly reduced tumor incidence (p < 0.05), however tumor multiplicity was not changed (p > 0.05, 0.9 tumors/rat fed the combined diet vs 1.2 for controls). Also, tumor burden was only marginally reduced in rats fed the combined diet vs control rats (65 vs 210 mg of tumor/rats, respectively). The reduction in tumor incidence was associated with a decreased labeling index and proliferation zone in normal appearing colon mucosa. Therefore, this study shows that phytochemicals in wheat bran, soy, flax and orange juice reduce colon carcinogenesis, presumably by decreasing cell proliferation and enhancing cell differentiation.

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Structural Studies upon the Interactive Effects between Organic Dyestuffs and Polyelectrolytes (I). The Stacking Effect of Methylene Blue and Acridine Orange (유기색소분자와 전해질고분자 사이의 상호작용 효과에 관한 구조론적 연구 (I). Methylene Blue 및 Acridine Orange의 Stacking 효과)

  • Chong Hoe Park;Dae Hyun Shin;Sock Sung Yun;Moo Soon Park;Hong Lee
    • Journal of the Korean Chemical Society
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    • v.30 no.3
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    • pp.289-295
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    • 1986
  • Spectroscopic studies have been carried out on the metachromatic behavior of methylene blue(MB) and acridine orange(AO) in the presence of polyvinylsulfate(PVS) and polystyrenesulfonate(PSS) The characteristic changes of meta-band with the change of P/D value are discussed in terms of stacking theory. It has been found that the stacking effect in the PVS-dye system is stronger than that in the PSS-dye system and that MB shows stronger stacking effect than AO. A stacking model and dimension of bound dyes on the surface of polymer chain is proposed on the basis of the previously suggested model of dimer found in the aqueous solution of planar aromatic dyes. The proposed model is found to be reasonable in accordance with the experimental results obtained by various workers.

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