• Bulletin of the Korean Chemical Society
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• 제27권9호
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• pp.1439-1444
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• 2006

A $Cu^{2+}$ ion-selective membrane microelectrode has been fabricated from poly vinyl chloride (PVC) matrix membrane containing a new symmetrical hexadentate Schiff,s base 2-{1-(E)-2-((Z)-2-{(E)-2-[(Z)-1-(2-hydroxyphenyl)ethylidene]hydrazono}-1-methylpropylidene)hydrazono]ethyl}phenol (HDNOS) as a neutral carrier, Potassium tetrakis(4-chlorophenyl) borate (KTpClPB) as an anionic excluder and o-nitrophenyloctyl ether (NPOE) as a plasticizing solvent mediator. The microelectrode displays linear potential response in the concentration range of $1.0\;{\times}\;10^{-5}-1.0\;{\times}\;10^{-11}$ M of $Cu^{2+}$. The microelectrode exhibits a nice Nernstian slope of 25.9 ${\pm}$ 0.3 mV $decade^{-1}$ in the pH range of 3.1-8.1. The sensor has a relatively short response time in whole concentration ranges ($\sim$5 s). The detection limit of proposed sensor is $5.0\;{\times}\;10^{-12}$ M (320 pg/L), and it can be used over a period of eight weeks. The practical utility of the sensor has been demonstrated by using it as an indicator electrode in the potentiometric titration of $Cu^{2+}$ with EDTA. The proposed membrane electrode was used for the direct determining of $Cu^{2+}$ content in black and red pepper, and in waste water samples.

• Journal of Magnetics
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• 제21권2호
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• pp.255-260
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• 2016

The health effects of environmental and occupational exposure to steady magnetic fields is a matter of concern. The aim of this study was to evaluate the hematologic effects of exposure to steady magnetic fields at the electrolysis unit of a Copper complex. The population under study was the workers of the electrolysis unit of the copper refinery. The average steady magnetic field in the exposure group was 2.5 mT. The blood indices of workers exposure to steady magnetic fields after adjusting for confounders showed decreased white blood cells (except neutrophils) and increase in the number and volume of platelets. Red blood cells did not show any significant difference. Exposure to steady magnetic fields even in proposed safe limits may have hematologic effects on humans. There is a necessity for more research about the safe doses of exposure to magnetic fields.

• Journal of the Korean Wood Science and Technology
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• 제43권1호
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• pp.112-121
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• 2015

국내에서 사용되고 있는 가압주입 처리용 구리 붕소 아졸화합물계의 목재 방부제 Copper Azole (CuAz)의 목재내 주입량별 부후 특성을 조사하였다. 여러 가지 주입량으로 CuAz-2 방부제를 가압주입한 시편을 이용하여 갈색부후균인 부후개떡버섯에 의한 방부효력시험을 실시한 후 질량감소율을 측정하였다. 또한, CuAz-2 처리 시편을 부후개떡 버섯으로 부후시킨 후 광학현미경과 전자현미경으로 부후 특성을 관찰하였다. 그 결과, 부후개떡버섯에 의한 무처리재는 40% 이상의 질량감소율을 보여주었고 실내 부후에 의한 CuAz-2 약제의 방부효력을 나타내는 값은 $1.79{\sim}3.32kg/m^3$이었다. CuAz-2의 주입량에 따라 횡단면, 방사단면, 접선단면에서의 목재조직은 무처리 시편과 비교하여 부후 정도가 다르게 나타났다. 횡단면에서는 조재와 만재부분에서 수직수지구, 방사조직의 부후가 많이 관찰되었고, 방사단면에서는 방사가도관, 방사유세포, 벽공 부분이 부후되어 파괴되었고, 접선단면에서는 방사조직, 수평수지구가 심하게 부후되었다. 따라서 본 연구에서 주입량에 따른 부후 현상이 크게 차이가 난 점 등을 고려하여, 현재의 CuAz-2 주입량에 대한 적정성 검토가 국내 환경에 대해서 이루어져야 할 것으로 생각된다.

• 박물관보존과학
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• 제13권
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• pp.13-22
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• 2012

국립중앙박물관 소장 적의본과 폐슬본은 20세기 초에 제작된 것으로 모두 지본채색되어 있다. 두 본에 사용된 채색 안료 및 염료에 대한 비파괴분석을 통해 채색 재료를 확인하고자 하였다. 채색 안료의 성분분석에는 XRF를 이용하였다. 적의본의 안료 분석결과 백색은 연분, 흑색은 먹, 황색은 석황, 적색은 진사와 연단, 녹색은 구리와 비소화합물 또는 석청과 석황을 혼합하여 사용한 것으로 추정되며 기타색상으로 황동을 사용하였다. 폐슬본에 사용된 백색, 흑색, 황색, 녹색은 적의본에 사용된 안료와 동일하나 적색은 채색 안료에 차이를 보였다. 한편 적의본과 폐슬본에 사용된 청색은 안료의 종류를 확인이 어려우나 연분과 혼합하여 사용한 것으로 추정된다. 또한 적의본의 청색 한지에 대한 UV-Vis 분광분석 결과 인디고(쪽)으로 염색한 것으로 추정되었다.

• 패션비즈니스
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• 제23권2호
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• pp.62-76
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• 2019

The importance of color is increasing in modern life and we call such present age that is 'color age'. These day that all areas of life are being getting fashionize, ordinary people as well as design specialist are required of culture and knowledge about color. Color design education is important curriculum at liberal arts course and in special design trainning course. Color expresses by hue, value and chroma in Munsell color system. But design spot is using mainly hue and tone color system. Therefore it is very important that educate tone concept in color design education. When think influence that increase of color, we must develop hue and tone color system in suitable for color design education. This research designed usable 'Hue and Tone 313 Colot System' for efficeint sensual color education. Also I designed 313 color papers with attached the Munsell notation which could reappear the spare color paper when needed. The 10 hues classification of this system are Red, Yellow Red, Yellow, Green Yellow, Green, Blue Green, Blue, Purple Blue, Purple, Red Purple. The 19 tones classification of this system are vivid, light, standard, deep, pale, soft, dull, dark, very pale, light grayish, medium grayish, dark grayish, very dark, off White, off Pale, off Light Gray, off Medium Gray, off Dark Gray, off Black. The special colors of this system are gold, silver and copper.

• 센서학회지
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• 제6권5호
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• pp.407-413
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• 1997

기판온도 $300^{\circ}C$에서 열증착법에 의해 p형 <100> Si 기판위에 CuPc(Copper Phthalocyanine) 결정 박막을 증착하였다. X선 회절분석으로부터 CuPc 박막은 a-축 방향으로 성장하였음을 알 수 있었다. CuPc분자들이 기판면위에 수직인 CuPc/Si박막의 광전특성을 조사하기 위하여 수직방향의 전류-전압 (I-V) 특성을 기판 Si의 특성과 비교 관찰하였다. 저항성 접촉을 위해 기판인 p형 Si위에 전극으로 Au를 증착시켰다. Au/Si 접합에 빛을 조사한 결과 전류는 증가하지만 광기전력효과는 관찰되지 않았다. p형 반도체인 CuPc 박막과 기판 p-Si의 접합은 장벽을 형성하지 않기 때문에 빛을 조사하지 않았을 때의 I-V 특성은 저항성을 나타낸다. 빛을 조사하였을 때 CuPc/Si 접합의 증가된 광전류는 Si 웨이퍼보다 현저하게 큰 것을 알 수 있다. 따라서 CuPc 층이 600 nm 파장에서의 붉은 빛을 현저하게 흡수하여 광전류에 기여하는 다량의 광캐리어를 형성함을 알 수 있다. CuPc/Si 박막은 $J_{sc}$ (short-circuit photocurrent) $4.29\;mA/cm^{2}$와 $V_{oc}$ (open circuit photovoltage) 12 mV의 광기전력 특성을 보여준다.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2000년도 제31회 춘계학술대회
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• pp.54-61
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• 2000

A method and results of classification of 4 types metallic wear debris were presented by using their color features. The color image of wear debris was used (or the initial data, and the color properties of the debris were specified by HSI color model. Particle was characterized by a set of statistical features derived from the distribution of HSI color model components. The initial feature set was optimized by a principal component analysis, and multidimensional scaling procedure was used for the definition of classification plane. It was found that five features, which include mean values of H and S, median S, skewness of distribution of S and I, allow to distinguish copper based alloys, red and dark iron oxides and steel particles. In this work, a method of probabilistic decision-making of class label assignment was proposed, which was based on the analysis of debris-coordinates distribution in the classification plane. The obtained results demonstrated a good availability for the automated wear particle analysis.

• 한국염색가공학회지
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• 제6권2호
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• pp.40-46
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• 1994

In order to study the properties of cochineal color, variation of uv, visible spectra by pH, dyeing properties on the silk in several dyeing conditions and thermodynamic parameter were investigated. Cochineal colors had an unusual to pH, especially had instability in alkali condition. An increase in the dyeing temperature and in time resulted in an increase in the dye content of silk fibers. Concentration of cochineal color in the silk fiber was related to pH and the maximum exhaustion of cochineal colors showed at about pH 3. The value of apparent diffusion coefficients and standard affinities of dyeing increased with the increase of dyeing temperature. The standard heats of dyeing(ΔH°), variation of entropy(ΔS°) and activation energy(E/sub act/) were caculated to be -1.72kcal/mo1, -3.77cal/mo1ㆍdeg and 1.26kcal/mo1, respectively. Silk fabrics were dyed bright red by tin chloride, reddish purple by copper sulfate, and bluish gray by iron sulfate, respectively. Lightfastness of silk fabrics mordanted by metal ion was weak.

• 한국의류산업학회지
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• 제6권2호
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• pp.239-244
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• 2004

On the whole the various medium colors were developed by repeat dyeing with different colorants after dyeing with one colorant in case of natural dyeing. In this study, in order to obtain various colors on wool fabrics with Gardenia and Sappan wood colorants, pre-mordanting and combination dyeing were carried out. Gardenia and Sappan wood used as natural colorants for combination dyeing showed good miscibility in dye bath, Metal compounds containing alum, copper and iron were used for pre-mordants. The various medium colors such as yellow-red were obtained according to various metal compounds for pre-mordants and various mixing portion of these natural colorants. The surface reflactance spectra and color characteristics of wool fabrics by mordanting and combination dyeing were investigated.

• 대한화학회지
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• 제15권4호
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• pp.183-189
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• 1971

Stoichiometry of hydrazine-bromate reaction has been studied in acid media of varying compositions, elucidating the effects of bromide and chloride ions in sulfuric acid, perchloric acid, hydrochloric acid, and hydrobromic acid at varying concentrations of hydrogen ion and cupric ion. The study shows that the number of red-ox equivalent consumed by one mole of hydrazine becomes practically 4.00 if the concentrations of bromide and hydrogen ions are kept higher than 0.1M and 6M, respectively. The presence of copper tends to reduce the bromate consumption by hydrazine in an irregular manner, but such an effect becomes unimportant if the concentrations of bromide and hydrogen ions are kept sufficiently high.