• Title/Summary/Keyword: Sensitizing

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The Synthesis of Green-Sensitizing Dye for Photographic Emulsion (사진유제용 Green-Sensitizing Dye의 합성)

  • Kim, Yeoung-Chan
    • Journal of the Korean Applied Science and Technology
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    • v.14 no.2
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    • pp.57-64
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    • 1997
  • The symmetric naphthothiazolo carbocyanine is of industrial importance as green-sensitizing dye in the spectral sensitization of emulsion microcrystals in negative film-making. In this study, green-sensitizing dye was prepared by the reaction of 2-methyl-3-sulfopropyl-5-phenyl-benzoxazolium(inner salt) with triethyl orthoacetate in the presence of triethylamine. The product was identified by using various analytical tools such as Elemental analyzer, IR spectrophotometer, UV-Vis spectrophotometer, $^1H$-NMR spectrometer, TGA and DSC. The maximum absorption peak in methanol solvent was 502nm. Therefore, it was concluded that benzoxazolo carbocyanine dye can be used as green-sensitizing dye for the spectral sensitization of photographic emulsion.

Spectral Sensitization and Photographic Characteristics of 9-Phenyl-5,5'-Diphenyl-3,3'-Bis(3-sulfopropyl)Benzoxazolo Carbocyanine Triethyl Ammonium Set (9-Phenyl-5,5'-Diphenyl-3,3'-Bis(3-sulfopropyl)Benzoxazolo Carbocyanine Triethyl Ammonium Salt의 분광증감과 사진특성)

  • Kim, Yeoung-Chan
    • The Journal of Information Technology
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    • v.8 no.3
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    • pp.51-56
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    • 2005
  • In this paper, we describe a study on the relationship between spectral sensitization and photographic characteristics of color paper. The photographic emulsion used in this study is a green-sensitizing emulsion. U.V maximum absorption peak value of 9-phenyl-5,5'-diphenyl-3,3'-bis(3-sulfopropyl)benzoxazolo carbocyanine triethyl ammonium salt was observed 507nm, and wedge spectrograms maximum peak value of color paper added dye to photographic emulsion was shown 553nm. As compared with the absorption peak of the dye in methanol solution, the sensitizing peaks of 9-phenyl-5,5'-diphenyl-3,3'-bis(3-sulfopropyl)benzoxazolo carbocyanine triethyl ammonium salt have red shifts of 46nm. The photographic characteristics of green-sensitizing emulsion were obtained contrast(2.6), speed(48-57), fog(0.08). Therefore, benzoxazolo carbocyanine dye is of industrial importance as green-sensitizing dye in the spectral sensitization of photographic emulsion.

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The Synthesis of Red-Sensitizing Dye for Color Photography (천연색 사진용 적감색소의 합성)

  • Kim, Yeoung-Chan
    • Journal of the Korean Applied Science and Technology
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    • v.18 no.2
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    • pp.136-141
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    • 2001
  • Naphthothiazolo carbocyanine is of industrial importance as red-sensitizing dye in the spectral sensitization of emulsion microcrystals in negative film-making. In this study, red-sensitizing dye was prepared by the reaction of 2-methyl-3-sulfopropyl-4,5-naphthothiazolium(inner salt) with triethyl orthoacetate in the presence of triethylamine. The product was identified by using various analytical tools such as Elemental analyzer, IR spectrophotometer, UV-Vis spectrophotometer, Mass spectrometer, $^{1}H-NMR$ spectrometer, TGA and DSC. The maximum absorption peak in methanol solvent was 573nm. Therefore, it was concluded that naphthothiazolo carbocyanine dye can be used as red0sensitizing dye for the spectral sensitization of photographic emulsion.

Leucocyte Promoting Factor of B. Pertussis Vaccine (백일해 예방약의 백혈구 증가 인자에 관한 연구)

  • Choi, Sung-Bae
    • The Journal of the Korean Society for Microbiology
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    • v.20 no.1
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    • pp.109-113
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    • 1985
  • It was well known that B. pertussis cells possess protective antigen, histamine sensitizing factor, heatstable and labile toxin, hemagglutinin, agglutinogen and the others. Previous reports involving above antigenic properties of B. pertussis have been carried out for several years. However, leucocyte promoting property was not yet investigated. In this report, the results of studies on the leucocytosis, particulary the lymphocytosis, produced in mice by injecting pertussis vaccine were presented. Especially leucocyte promoting property and histamine sensitizing property of B. pertussis vaccine treated at various temperatures were compared. The relationship between the leucocyte promoting property and histamine sensitizing property was investigated. Results were as follows. 1. Although leucocytosis was significantly rised in both 0.5ml injection and 0.1ml injection of pertussis vaccine than in control, at the higher dose (0.5ml injection) an elevation in white cell count was more significant. The leucocyte responce to pertussis vaccine was greater following 0.5 ml injection than following 0.1ml injection. 2. Lymphocytosis was significantly rised in both 0.5ml injection and 0.1ml injection of pertussis vaccine than in control. At higher dose (0.5ml injection), an elevation in lymphocyte count was more significant. 3. Order of elevation in differential leucocyte counts was lymphocyte, polymorphonuclear leucocyte and monocyte. 4. The leucocyte response to pertussis vaccine was 2 fold greater following intravenous injection than following subcutaneous injection. 5. Decrease leucocyte promoting activity and histamine sensitizing activity resulted from exposure to temperature above $56^{\circ}C$. Histamine sensitizing activity of pertussis vaccine treated at various temperatures paralleled leucocyte promoting activity.

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A Study on Fault Detection Tests for Combintional Logic Networks (조합논리회로의 결함검출시험에 관한 연구)

  • 최흥문
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.14 no.6
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    • pp.10-15
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    • 1977
  • This paper proposes a simple and systematic method for the generation of the fault detection test sets for the combinational logic networks. Based on tile path sensitizing concept, the test patterns for the primary input gates of the network are defined, and then it is shown that, arranging these predefined test patterns according to the path sensitizing characteristics of the given network sturctures, the minimal complete test sets for the fan-out free combinational networks can be found easily. It is also shown that, taking into account the fan-out paths sensitizing compatibility, the proposed method can be extended to the irredundant reconvergent fan-out networks.

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Spectral Sensitization and Photographic Characteristics of 9-Phenyl-3,3'-Bis(3-Sulfopropyl)-4,5,4',5'-Naphthothiazolo Carbocyanine Triethyl Ammonium Salt

  • Kim, Yeoung-Chan
    • Journal of the Korean Applied Science and Technology
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    • v.20 no.4
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    • pp.366-371
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    • 2003
  • In this paper, it was studied about the red-sensitive layer. UV-Vis data of the dye at monomeric and J-state were considered with respect to their performance(contrast, speed, density and fog) in photographic emulsion. The sensitizing effect of the dye is found to be strongly structure-dependent. Naphthctbiazolo carbocyanine dye can be used as red sensitizing dye for the spectral sensitization of photographic emulsion.

Synthesis of 9-Phenyl-5,5'-Diphenyl-3,3'-Bis(3-Sulfopropyl)-Benzoxazolo Carbocyanine Triethyl Ammonium Salt (9-Phenyl-5,5'-Diphenyl-3,3'-Bis(3-Sulfopropyl)-Benzoxazolo Carbocyanine Triethyl Ammonium Salt의 합성)

  • Kim, Yeoung-Chan
    • Journal of the Korean Applied Science and Technology
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    • v.25 no.2
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    • pp.226-231
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    • 2008
  • In this study, benzoxazolo carbocyanine is of industrial importance as green-sensitizing dye in the spectral sensitization. Sensitizing dye was prepared by the reaction of 2-methyl-3-sulfopropyl-4,5-benzoxazolium (inner salt) with triethyl orthobenzoate in the presence of triethylamine. The product was identified by using various analytical tools such as elemental analyzer, IR spectrophotometer, UV-Vis spectrophotometer, $^1H$-NMR spectrometer, TGA and DSC. The maximum absorption peak in methanol solvent was 507 nm. Therefore, it was concluded that benzoxazolo carbocyanine dye can be used as sensitizing dye for the spectral sensitization of photographic emulsion and color cosmetics.

Synthesis of 9-Ethyl-3,3'-Bis(3-sulfopropyl)-4,5,4'5'-Naphthothiazolo Carbocyanine Triethyl Ammonium Salt (9-Ethyl-3,3'-Bis(3-sulfopropyl)-4,5,4'5'-Naphthothiazolo Carbocyanine Triethyl Ammonium Salt의 합성)

  • Kim, Yeoung-Chan
    • Journal of the Korean Applied Science and Technology
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    • v.31 no.3
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    • pp.416-421
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    • 2014
  • Naphthothiazolo carbocyanine is of industrial importance as red-sensitizing dye in the spectral sensitization. Sensitizing dye was prepared by the reaction of 2-methyl-3-sulfopropyl-4,5-naphthothiazolium (inner salt) with triethyl orthopropionate in the presence of triethylamine. The product was identified by using various analytical tools such as elemental analyzer, IR spectrophotometer, UV-Vis spectrophotometer, $^1H$-NMR spectrometer, TGA and DSC. The maximum absorption peak in methanol solvent was 578nm. Therefore, it was concluded that naphthothiazolo carbocyanine dye can be used as sensitizing dye for the spectral sensitization of photographic emulsion and color cosmetics.

SPECTRAL SENSITIZATION AND PHOTOGRAPHIC CHARACTERISTICS OF NAPHTHOTHIAZOLO CARBOCYANINE DYE

  • Kim, Yeoung-Chan
    • Journal of Photoscience
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    • v.3 no.2
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    • pp.65-69
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    • 1996
  • In this paper, it was studied about the red-sensitive layer. UV-Vis data of the dye at monomeric and J-state were considered with respect to their performance(contrast, density and fog) in photographic emulsion. The sensitizing effect of the dye is found to be strongly structuredependent. Naphthothiazolo carbocyanine dye can be used as red-sensitizing dye for the spectral sensitization of photographic emulsion.

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