• 제목/요약/키워드: Black Light

검색결과 601건 처리시간 0.033초

검정콩 함유 천연 안토시아닌의 염색성 연구 (Studies on the Dyeing Properties of Black Soybean Anthocyanin)

  • 김성연;염선경;이경남
    • 한국의류산업학회지
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    • 제9권1호
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    • pp.103-112
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    • 2007
  • The purpose of this study was to investgate dyeing, moradnting properties and colorfastness activities of silk, polyamide, acetate treated black soybean extracts. The color of extract by buffer solution (pH=1) red, but the higher pH of extracted black soybean solution the paler of color strength. Black soybean extracts was approved anthocyanin of 3type(Delphinidin3-glucoside, Cyanidin 3-glucoside, Petunidin 3-glucoside) by chemiclal analysis. This anthocynin, in acid condition, is oxinium structure (red color, soluable) but, in alkali condition quinoid structure(dark brown, in soluable). The optimum dyeing condition of black soybean anthocynin was 10min at $30^{\circ}C$, pH -1. Colorfastness to washing and light showed generally low but crocking fastness was excellent.

흑두 추출물에 의한 견직물의 염색성 (Dyeing Properties of Silk Fabric Dyed with Black Soybean Extracts)

  • 류정민;전영실;김인회;남성우
    • 한국염색가공학회지
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    • 제17권5호
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    • pp.20-25
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    • 2005
  • The colorants were extracted from black soybean using a buffer solution. Dyeing properties and the fastness of silk fabric dyed with black soybean extracts were investigated. K/S values of dyed fabric were increased with concentration of black soybean extracts. Magnesium sulfate, nickel sulfate and calcium chloride as mordants are used to obtain reddish purple color. Optimum dyeing temperature of black soybean extracts was $30^{\circ}C$. Fastness were generally good except for light fastness which was extremely poor.

차량용 블랙박스 영상을 이용한 주간 신호등 탐지 및 인식 시스템 (Traffic Lights Detection and Recognition System Using Black-Box Images)

  • 황지은;안다솔;이승화;박성호;박천수
    • 반도체디스플레이기술학회지
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    • 제15권2호
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    • pp.43-48
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    • 2016
  • In this paper, we propose a traffic light detection and recognition (TLDR) algorithm in the daytime. The proposed algorithm utilizes the color and shape information for the TLDR. At first, a traffic light is detected and recognized based on its shape information. Then, the color range of the detected traffic light is investigated in HSV color space. The input data of the proposed TLDR algorithm is the color image captured using the black box camera during driving. Our simulations demonstrate that the proposed algorithm can achieve a high detection and recognition performance for the images including traffic lights.

A New Record of Hadennia nakatanii (Lepidoptera, Erebidae) from Korea

  • Shin, Bora;Kim, Sung-Soo;Choi, Sei-Woong
    • Animal Systematics, Evolution and Diversity
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    • 제38권4호
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    • pp.260-262
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    • 2022
  • One species of the Herminiinae, Hadennia nakatanii Owada is newly recorded from Korea. Hadennia nakatanii can be distinguished by the light blackish forewing with the relatively thick, transverse medial line, a large light yellowish discal dot, the thick blackish slanted band from the apex to the middle part of the dorsum, and the light blackish hindwing, basally suffused with black and medially broadly suffused with black. The female genitalia can be diagnosed by the simple antrum, the long strongly sclerotized ductus bursae, and the large rectangular corpus bursae with a small uplifted signa patch with minute spicules. We provided the figures of adult and the genitalia with short notes on distribution.

가시광선 활용을 위한 Ag 도핑 흑색 ZnO 나노 광촉매 합성 (Synthesis of Ag-doped black ZnO nano-catalysts for the utilization of visible-light)

  • 김의준;김혜민;이승효
    • 한국표면공학회지
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    • 제56권3호
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    • pp.208-218
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    • 2023
  • Photocatalysts are advanced materials which accelerate the photoreaction by providing ordinary reactions with other pathways. The catalysts have various advantages, such as low-cost, low operating temperature and pressure, and long-term use. They are applied to environmental and energy field, including the air and water purification, water splitting for hydrogen production, sterilization and self-cleaning surfaces. However, commercial photocatalysts only absorb ultraviolet light between 100 and 400 nm of wavelength which comprises only 5% in sunlight due to the wide band gap. In addition, rapid recombination of electron-hole pairs reduces the photocatalytic performance. Recently, studies on blackening photocatalysts by laser, thermal, and plasma treatments have been conducted to enhance the absorption of visible light and photocatalytic activity. The disordered structures could yield mid-gap states and vacancies could cause charge carrier trapping. Herein, liquid phase plasma (LPP) is adopted to synthesize Ag-doped black ZnO for the utilization of visible-light. The physical and chemical characteristics of the synthesized photocatalysts are analyzed by SEM/EDS, XRD, XPS and the optical properties of them are investigated using UV/Vis DRS and PL analyses. Lastly, the photocatalytic activity was evaluated using methylene blue as a pollutant.

밀의 항흑수병 항생물질의 연구 1 (Studies on antibiotics against Wheat black rust (I))

  • 정영기
    • 미생물학회지
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    • 제19권3호
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    • pp.108-114
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    • 1981
  • In order to isolate microorganisms which produce antibiotics aganist wheat black rust, some bacteria, molds, and actinomycetes were isolated from soils and screened for the production of antibiptics against wheat black rust. Beacuse wheat black rust-puccinia graminis--is a complete parsitic mold which can't grow in artifical medium, new method for the screening of antibiotic producing microorgsnisms against wheat black rust developed by using live leaves of wheat. With new method, a strain No. $480HS_{20}$ which produces a substnace having strong and Puccinia graminis activity and very narrow antimicrobial spectrum was isolated. the substance produced by the strain No.$480HS_{20}$ had better anti Puccinia graminis activity than any other known antifungal antibotics such as kasurgamycin, balasticidins, actidione, antimycin, ologomycin. And the substance was observed to be very stable at heat and ultraviolet light. The strain was indentified as Bacillus subtilis.

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The Characteristics and Change of Colors on Fashion Collections in 1990s

  • Kim, Honey;Kim, Young-In
    • International Journal of Costume and Fashion
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    • 제7권2호
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    • pp.18-31
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    • 2007
  • The purpose of this study is to examine color characteristics and color changes of the fashion collections through 1990s, and to provide the efficient color information for color planning upon fashion themes. For this research, a total of 30,084 colors were collected from Paris, Milan, London, New York Collections in 1990s. Those colors were first measured by the Pantone Textile Color Specifier and COS Color System and spectrophotometer(color eye 580). These measured color values $L^{\ast}a^{\ast}b^{\ast}$of CIE were converted into H V/C of Munsell System, and 12 tones of PCCS with 5 achromatic colors. The characteristics of collected colors were analyzed in general and by place, season and year. The results of the study are as follows : First, the hues of purple blue, yellow red, red, yellow and the tones of grayish, pale, white, black, dark grayish, dull, light grayish appeared mostly. Yellow was shown quite frequently in spring/summer while purple, purple blue, red and yellow red in fall/winter. White, pale, light, light grayish and light gray were shown more frequently in spring/summer while Black, dark grayish, grayish, dark gray and dark in fall/winter. Second, the characteristics of colors by 4 representative places were similar to the general characteristics of colors in 1990's. Third, There were distributed widely Red, Yellow Red, Yellow in the early 1990s, Green Yellow, Green, Blue Green in the mid of 1990s, and Purple Blue, Purple in the late of 1990s. The distribution range of chromatic colors showed wide in both of the early of 1990s and the mid of 1990s for a while, and achromatic colors of grayish, gray and black appeared mostly in the late of 1900s.

한복배색의 조화감에 대한 한.미 여대생의 지각 반응 연구(제3보) -유채색과 무채색을 중심으로- (A Study in the Perception of the Harmony of Coloration in Traditional Korean Dress of Korean and American Students (Part III) - On the Chromatic and Achromatic colors -)

  • 강경자;문주영
    • 한국의류학회지
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    • 제28권7호
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    • pp.962-973
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    • 2004
  • The purpose of this research is to understand the harmony of chromatic and achromatic colors of the traditional Korean dress. The subjects were women's college students in Korea and America. Chromatic colon, red, yellow, and green color, were chosen for the color of the Korean jacket, and achromatic colors were chosen for the color of the skirt, and then the colors' chroma were controlled and value of color was changed. In addition, the three colors of the jacket were combined with four kinds of the colors' tone. Then, the students of both countries assessed about the harmony for 48 colorations which were variously incorporated with the tones of skirt and jacket. The results of research can be summarized as follows. When red jackets were combined with skirts of achromatic colors, students of both counties showed the different views in the range of harmony and disharmony for colorations of white(N9) skin and vivid jacket, and white(N9) skirt and dark jacket, and black(N2) skirt and light jacket, and black(N2) skirt and dull jacket. In the tone of yellow jackets and achromatic skirts, students of both counties showed similar responses in that a light yellow jacket was well matched with dark grey(N4) and black(N2) skirt. While Korean students generally evaluated that coloration was well harmonized when low value color was arranged below, American students thought, that the tones of a harmonized skirt were different, according to the jacket's tones. When green jackets were combined with stills of achromatic colors, colorations that showed their different views of both countries were a white(N9) skirt combined with vivid, light, dull jackets, and a light grey(N7) skirt and dull jacket, and a dark grey(N4) skirt and dark jacket. Among 48 stimuli of coloration on the chromatic and achromatic colors, Korean students evaluated 16sets and American students judged 28 sets as harmonized colors. Therefore, it came to the conclusion that Korean students had the sense of harmonious coloration of more narrow range than American students.