• 제목/요약/키워드: Color analyzer

검색결과 156건 처리시간 0.023초

요분석 스트립의 정색반응에 대한 색도좌표 보정 (The Compensation of Chromaticity Coordinates on Primary Color Reaction of Urine Strips)

  • 김재형;조진욱;남상희
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2001년도 추계학술대회 논문집 Vol.14 No.1
    • /
    • pp.320-323
    • /
    • 2001
  • A computer simulation was performed to distinguish quantitatively a color reaction in a urine analysis systems by using the spectral power distribution of LEDs. the spectral reflectance of a urine strip. and the spectral sensitivity of photodiode. The CIE tristimulus values and CIE chromaticity coordinates ware modified to be conformable with real color reactions in a urine strips. Results on color simulation showed a of real color in comparison with those obtained by Colorimeter CM2C(Color Savvy).

  • PDF

Isoindoline계 황색 화합물의 환경친화적 합성 및 이의 특성 (Eco-friend Synthesis of Isoindoline Yellow Compound and its Properties)

  • 김송혁;김재환;양석원;이원기;이근대;박성수
    • 공업화학
    • /
    • 제26권1호
    • /
    • pp.74-79
    • /
    • 2015
  • 본 연구에서는 계면활성제를 사용하지 않는 친환경적 방법으로 붉은 계통의 노란 색상을 띄는 높은 내열성을 가진 isoindoline 화합물을 합성하기 위하여 다양한 반응 온도에서 여러 구조의 isoindoline 유도체를 첨가하여 합성한 후, 이를 고압 반응기에서 온도, 시간을 조절하여 결정화하였다. 시료들의 화학적 구조, 입자 형상 및 크기, 색상, 광학적 특성은 각각 FT-IR, FE-SEM 및 PSA, 색차계, UV-Vis 분광기, 제타 포텐샬을 이용하여 측정하여 비교 분석하였다. 유도체를 첨가한 후 결정화 처리하여 높은 내열성, 균일한 입도분포, 우수한 분산성의 isoindoline 화합물을 수득하였고 합성 조건에 따른 색상 변화 경향성을 확인할 수 있었다.

용매 열처리법을 통한 diketopyrrolopyrroles 화합물의 안료화 및 그 특성 (Pigmentation of Diketopyrrolopyrroles Compound through Solvent Thermal-treatment and Its Property)

  • 김재환;양석원;김대성;우관주;이근대;박성수
    • 공업화학
    • /
    • 제25권4호
    • /
    • pp.357-362
    • /
    • 2014
  • 본 연구에서는 높은 은폐력과 선명한 색상을 나타내는 diketopyrrolopyrroles (DPP) red 254 안료를 제조하기 위하여 미리 합성한 DPP red 254 crude를 용매 열처리 온도, 유도체 첨가 또는 볼밀링 조건들이 조합된 용매 열처리 공정을 통하여 얻어진 시료들의 물성을 비교 분석하였다. 시료의 특성은 FT-IR, UV-Vis 분광기, TEM, PSA, BET surface area analyzer, viscometer 및 spectrophotometer를 이용하여 분석하였다. 합성한 DPP red 254 crude를 볼밀링 나노화하고 용매 열처리하는 방법이 매우 효과적인 안료화 공정임을 확인하였다.

Ion-plating법에 의하여 TiN 피막처리된 교정용 장치물의 변색성 및 내식성 (DISCOLORATION AND CORROSION RESISTANCE OF TiN-COATED ORTHODONTIC APPLIANCES PRODUCED BY ION-PLATING METHOD)

  • 김진희;권오원;최영윤
    • 대한치과교정학회지
    • /
    • 제23권3호
    • /
    • pp.327-340
    • /
    • 1993
  • The purpose of this study was to estimate the possibility of practical application of TiN ion-plating method on orthodontic appliances. TiN was coated on the surface of orthodontic stainless steel roll band by means of ion-plating method, and colorimetric properties of its obtained TiN film were investigated by using color analyzer. Also its corrosion and discoloration properties were compared with those of non ion-plated stainless steel roll band by using immersion test, which was done in 1N HCl solution for 10 days. Both weight changes and surface corrosion appearances of specimens for each day were respectively investigated by using electronic weighing machine and SEM(Scanning Electron Microscope). The discoloration degress of TiN-coated specimens immersed in 1N HCl solution were investigated by using color analyzer and then judged by N.B.S.(National Bureau of Standard) Unit. The results of this study were summarized as follows. o TiN ion-plated films showed the hue of 5Y, the value of 7, and the chroma of 3 by Munsell notations. o The weight losses and surface changes of TiN ion-plated specimens immersed in 1N HCl solution were less than those of non ion-plated specimens. It was shown, therefore, that the corrosion resistance was significantly improved by TiN ion-plating. o The discoloration degrees of non ion-plated specimens were too significant to be examined by color analyzer, while those of TiN ion-plated specimens were slight when judged by N.B.S. Unit. It was also apparent, therefore, that the anti-discoloration property was significantly improved by TiN ion-plating.

  • PDF

천연색 사진용 Magenta 발색제의 합성과 발색현상에 관한 연구 (A Study on the Synthesis of Magenta Coupler for Color Photograph and Color Development)

  • 김영찬;이병대
    • 한국응용과학기술학회지
    • /
    • 제23권1호
    • /
    • pp.92-97
    • /
    • 2006
  • In this paper, magenta coupler was prepared by the reaction of 1-(2,4,6-Trichlorophenyl)-3-(5-amino-2-chloroanilino)-5-pyrazolone with 2,4-di-tert-pentyl-phenoxy butanoyl chloride in the presence of pyridine. The product was identified by using various analytical tools such as melting point, elemental analyzer, IR spectrophotometer, UV-Vis spectrophotometer and GC-mass spectrometer. The reaction of magenta coupler with CD-3 (color development agent) was shown magenta color.

스마트폰을 이용한 휴대용 색차계와 입도계 개발 (Development of Portable Colorimeter and Size Analyzer by Using Smartphone)

  • 유상규;박현민;김현구;김사염;송시몬
    • 한국가시화정보학회지
    • /
    • 제17권3호
    • /
    • pp.19-23
    • /
    • 2019
  • The purpose of this research is to develop a facile measurement system for colorimetric analysis for zinc powder and size analyzer for zeolite particles in order to reduce the process time for their characteristic analysis. We present facile smartphone-based analysis methods to measure and estimate the size of zinc power by using colorimeteric method and the size of zeolite particles by using ImageJ program which is an open-source program. The results show a possibility of our methods to replace the previous professional analysis processes with them.

황색 발색제의 합성과 발색현상에 관한 연구 (Studies on the Synthesis of Yellow Coupler and Color Development)

  • 김영찬
    • 한국응용과학기술학회지
    • /
    • 제29권1호
    • /
    • pp.116-121
    • /
    • 2012
  • 본 연구에서 황색 발색제는 피리딘 존재 하에 ${\alpha}$-pivaloyl-2-chloro-5-amino- acetaniline hydrogen chloride와 1-hexadecane sulfonyl chloride를 반응시켜 얻었다. 이 물질은 다양한 분석장비를 이용하여 녹는점, 원소분석기, 적외선분석기, 자외선분석기, 질량분석기로 확인하였다. 황색 발색제를 CD-3(발색현상주약)와 반응시키면 황색이 나타났다.

Color Evolution in Single Crystal Colored Cubic Zirconias With Annealing Atmosphere and Temperature

  • Song, Jeongho;Noh, Yunyoung;Song, Ohsung
    • 한국세라믹학회지
    • /
    • 제53권4호
    • /
    • pp.450-455
    • /
    • 2016
  • Color change in single-crystal, yellow, red, purple, and colorless cubic zirconias (CZs) was investigated as a function of annealing in vacuum and air atmosphere at $800-1400^{\circ}C$ for 30 min, for development of a damascene process of plugging a precious metal paste at the elevated temperature. Coloring-element contents of the CZs were evaluated using WD-XRF, and the color change determined visually by naked eye, and using a digital camera and UV-Vis-NIR color analyzer. WD-XRF showed that all of the CZs had cubic-phase stabilizer elements and coloring elements. All CZs that underwent vacuum annealing exhibited a slight color change at $<900^{\circ}C$, while their colors began to change to black at $1100^{\circ}C$, and became opaque black at $1400^{\circ}C$. After air annealing, there was almost no color change up to $1400^{\circ}C$. Since red and purple CZs showed greater color difference (CD) values than the others, the degree of CD is likely to depend on the original color of the CZ due to the different stabilities of their coloring elements during annealing. Based on our results, it is suggested that annealing in air at $<900^{\circ}C$ is advantageous, and assorted colored CZs can be used for precious metal damascene.

PDP TV에서 인간 시각을 고려한 최적의 White Balance 구현 (A White Balance System for PDP TV)

  • 정기백;구본철
    • 대한전자공학회:학술대회논문집
    • /
    • 대한전자공학회 2003년도 신호처리소사이어티 추계학술대회 논문집
    • /
    • pp.363-366
    • /
    • 2003
  • We propose the system that automatically adjusts the white balance on display products to a standard value according to several nations. We replace manual or semi-auto method with fully automatic method using windows application program. And we use RS-232C serial interface to communicate PC with display products which we want to adjust white balance. The PC generates patterns for measuring color information and Color Analyzer measures color and brightness. This value is transmitted through RS-232C serial interface to PC. The PC's algorithm analyzes this information and then decides which RGB Gain value is best for optimal white balance. This RGB Gain value is transmitted through RS-232C serial interface to display products. The modified color value is measured again and feed back to PC. This sequence is repeated until optimum white balance is obtained.

  • PDF

Automatic Extraction of Blood Flow Area in Brachial Artery for Suspicious Hypertension Patients from Color Doppler Sonography with Fuzzy C-Means Clustering

  • Kim, Kwang Baek;Song, Doo Heon;Yun, Sang-Seok
    • Journal of information and communication convergence engineering
    • /
    • 제16권4호
    • /
    • pp.258-263
    • /
    • 2018
  • Color Doppler sonography is a useful tool for examining blood flow and related indices. However, it should be done by well-trained operator, that is, operator subjectivity exists. In this paper, we propose an automatic blood flow area extraction method from brachial artery that would be an essential building block of computer aided color Doppler analyzer. Specifically, our concern is to examine hypertension suspicious (prehypertension) patients who might develop their symptoms to established hypertension in the future. The proposed method uses fuzzy C-means clustering as quantization engine with careful seeding of the number of clusters from histogram analysis. The experiment verifies that the proposed method is feasible in that the successful extraction rates are 96% (successful in 48 out of 50 test cases) and demonstrated better performance than K-means based method in specificity and sensitivity analysis but the proposed method should be further refined as the retrospective analysis pointed out.