직물을 구성하는 실의 시각적 혼색 효과

채영주 ( Youngjoo Chae ) 한국의류학회 2019 한국의류학회지 Vol.43 No.3

This research investigated the effect of individual yarn colors on the perception of overall colors of yarn-dyed woven fabrics. The way the colors of yarn-dyed woven fabrics are perceived is known as visual color mixing: when the different colored yarns juxtaposed on the fabric surface are observed from some distance away, they are visually mixed in our eyes and perceived as a solid color. However, we can still see individual yarn colors that make the fabrics look obviously different from actual solid colors. To quantify this visual color mixing effect, twenty-one sateen fabrics were produced in a wide range of colors using cyan, magenta, and yellow yarns, and the colors were measured instrumentally. The obtained colorimetric values were converted into solid color images on a CRT monitor. Then, the physical fabrics were scanned, and the scanned images were displayed on the monitor with solid color images in pairs for visual color difference evaluation. The woven and solid colors in each pair were of physically identical color; however, the visual color difference was as large as 4.81 ΔE^*_ab on average. A visual color difference model was proposed by considering this parametric effect of individual yarn colors.

한국에서 유통 중인 산화형 염모제의 중금속 농도에 관한 연구

최채만 ( Chae Man Choi ),홍미선 ( Mi Sun Hong ),이윤정 ( Yun Jung Lee ),김화순 ( Hwa Soon Kim ),김현정 ( Hyun Jung Kim ),김정헌 ( Jung Hun Kim ),채영주 ( Young Zoo Chae ) 대한화장품학회 2013 대한화장품학회지 Vol.39 No.3

2012년 1월에서 10월 사이에 전국에서 유통 중인 산화형 염모제(1제) 125개 제품에서 납(Pb), 비소(As), 카드뮴(Cd), 크롬(Cr), 망간(Mn), 니켈(Ni), 구리(Cu)의 농도 측정과 국산, 수입산 및 헤나별, 성상별, 색상별로 비교해 봄으로써 이에 관련된 분야의 기초자료를 제공하고자 본 연구를 시행하였다. 분석된 전체 염모제의 평균 중금속 농도는 납 0.211 μg/g, 비소 0.051 μg/g, 카드뮴 0.008 μg/g, 크롬 0.954 μg/g, 망간 6.250μg/g, 니켈 0.591 μg/g, 구리 0.544 μg/g으로 측정되었으며 납, 비소의 경우 우리나라 화장품 안전기준 등에 관한 규정에서 허용기준인 납 20 μg/g, 비소 10 μg/g보다 낮은 수치이다(식품의약품안전처 고시 제2013-24호). 또한 헤나 염모제는 통계적으로 유의한 차이를 보였으며(p < 0.05), 납 1.264 μg/g, 비소 0.267 μg/g, 카드뮴 0.025 μg/g, 크롬 4.055 μg/g, 망간 72.044 μg/g, 니켈 3.076 μg/g, 구리 4.640 μg/g으로 국산 및 수입 염모제보다 높았다. 염모제의 성상별 중금속 농도는 통계적으로 유의한 차이를 보였으며(p < 0.05), 크림과 액체 타입에서 크롬이 각각 0.708 μg/g, 0.478 μg/g로 가장 높았고, 분말타입에서는 망간이 60.041 μg/g로 높았다. 염모제의 색상별 중금속 농도는 통계적으로 유의한 차이를 보이지 않았으며, 노란색의 경우 납, 크롬이 높은 평균 농도를 보였고, 적색과 분홍색의 염모제는 크롬, 갈색과 흑색은 망간이, 녹색은 니켈이 높은 평균 농도를 나타내었다. This study was aimed to provide the fundamental data about oxidized hair color products. For this reason, we collected 125 oxidized hair color products, which were distributed in domestic market from January to October, 2012, and measured the heavy metal concentrations of lead, arsenic, cadmium, chromium, manganese, nickel, copper in the samples. Results were compared by domestic, foreign, henna, type and color. The average metal concentrations were as follows; 0.211 μg/g for lead, 0.008 μg/g for cadmium, 0.051 μg/g for arsenic, 0.954 μg/g for chromium, 6.250 μg/g for manganese, 0.591 μg/g for nickel and 0.544 μg/g for copper. In case of lead and arsenic, the concentrations were much less than the regulated amount (20 μg/g and 10 μg/g, respectively) suggested by MFDS (Ministry of Food and Drug Safety). In henna (p < 0.05), the concentrations were significantly higher than those of other domestic and foreign oxidized hair color products as follows; 1.264 μg/g for lead, 0.267 μg/g for arsenic, 0.025 μg/g for cadmium, 4.055 μg/g for chromium, 72.044 μg/g for manganese, 3.076 μg/g for nickel and 4.640 μg/g for copper. Statistically, it showed that the heavy metal concentrations were quite different for the different types of hair color products. The cream and liquid type products had the highest average concentration in chromium (0.708 μg/g, 0.478 μg/g, respectively). On the other hand, powder type products showed the highest concentration in manganese (60.041 μg/g). In addition, the concentrations of heavy metals and the color of products are not quite correlated. It was shown that average concentrations of lead and chromium were higher for yellow, chromium for red and pink, manganese for brown and black, and nickel for green.

서울 강남지역 채소류 경작지의 토양 중 잔류농약 실태조사

최채만(Chae-Man Choi),육동현(Dong-Hyeon Yook),홍채규(Chae-Kyu Hong),김태랑(Tae-Rang Kim),황영숙(Young-sook Hwang),황인숙(In-Sook Hwang),김정헌(Jung-Hun Kim),김무상(Mu-Sang Kim),채영주(Young-zoo Chae) 한국농약과학회 2011 농약과학회지 Vol.15 No.2

서울지역 급성위장관염 환자 및 지하수에서 분리한 A형 로타바이러스의 유전자형

김은정,김무상,채영주,천두성,Kim, Eun-Jeung,Kim, Moo-Sang,Chae, Young-Zoo,Cheon, Doo-Sung 한국미생물학회 2011 미생물학회지 Vol.47 No.4

2009년부터 2010년까지 서울지역에서 산발적으로 발생한 급성위장관염 환자에 대하여 효소면역측정법(ELISA)을 이용하여 로타바이러스를 검출하였다. 총 1,916건 중 로타바이러스는 354건(18.4%)이 검출되었다. RT-PCR을 이용하여 유전자형 분석을 실시한 결과 P6G[4] (35%), P8G[3] (28%), P8G[1] (24%), P4G[2] (10%), P8G[9] (3%)로 나타났다. 서울지역 지하수 70지점을 대상으로 효소면역측정법을 이용하여 로타바이러스를 조사한 결과 2 지점에서 양성으로 검출되었으며, RT-PCR을 이용하여 유전자형 분석을 실시한 결과 P8G[3]로 나타났다. 이러한 연구결과는 서울지역 로타바이러스 질환의 예방을 위한 기초자료로 활용될 것으로 기대된다. Fecal specimens from acute gastroenteritis in Seoul from 2009 to 2010 were collected and then tested for the presence of Group A Rotavirus by ELISA. Among a total of 1,916 samples investigated, 354 samples (18.4%) were positive. The predominant genotypes of positive samples were confirmed as P6G[4] (35%), P8G[3] (28%), P8G[1] (24%), P4G[2] (10%), P8G[9] (3%), respectively. Among a total of 70 ground water samples investigated, 2 samples (2.8%) were positive. The genotypes of positive samples were confirmed as P8G[3] (100%). By this molecular investigation, genotypic distribution associated with rotavirus will be used for control and prevention of rotavirus related diseases.

서울지역 집단식중독 환자에서 검출된 노로바이러스의 유행양상

김은정,김무상,채영주,천두성,Kim, Eun-Jeung,Kim, Moo-Sang,Chae, Young-Zoo,Cheon, Doo-Sung 한국미생물학회 2012 미생물학회지 Vol.48 No.2

Fecal specimens from acute gastroenteritis in Seoul from 2003 to 2007 were collected and then tested for the presence of Norovirus by RT-PCR. Among a total of 4,685 samples investigated, 383 samples (8.2%) were positive. The analysis of outbreaks related norovirus contamination occurred from 2003 to 2007 in Seoul revealed 57 cases happened during investigated period. Seasonal prevalence showed winter season predominant characteristics of pattern of epidemics by long term investigation for norovirus infections. The incidence of norovirus infection in the case of acute gastroenteritis by catering food in school were 32%, by food in general restaurant were 29%. This epidemiological investigation in Seoul was strongly needed for control and prevention of outbreaks related with norovirus by forecasting disease epidemics. 2003년부터 2007년까지 서울지역 집단식중독 환자에 대하여 RT-PCR을 이용하여 노로바이러스를 검출하였으며, 총 4,685건 중 노로바이러스가 383건(8.2%)이 검출되었다. 식중독 발생 사례는 2003년부터 2007년까지 57사례가 발생하였다. 계절별 유행양상은 겨울철에 가장 많이 검출되었다. 섭취장소별 유행양상은 학교급식 중 위탁경영에 의한 발생이 32%로 나타났으며, 일반음식점에 의한 발생이 29%로 나타났다. 본 연구는 서울지역 노로바이러스성 식중독 관리를 위한 기초자료로 활용될 수 있을 것으로 기대된다.

서울시 수계시설에서 분리된 Legionella pneumophila의 분자역학적 특성

전수진,정지헌,승현정,김창규,진영희,오영희,최성민,채영주,Jeon, Su Jin,Jung, Ji Hun,Seung, Hyun Jung,Kim, Chang Kyu,Jin, Young Hee,Oh, Young Hee,Choi, Sung Min,Chae, Young Zoo 한국환경보건학회 2013 한국환경보건학회지 Vol.39 No.2

Objectives: The genus Legionella is common in aquatic environments. Some species of Legionella are recognized as potential opportunistic pathogens for human, notably Legionella pneumophila that causes, Legionellosis. Thus, we investigated the contamination of Legionella pneumophila on water supply systems in Seoul, including cooling towers, public baths, hospitals and fountains. Methods: The existence of 16S rRNA and mip gene of L. pneumophila was confirmed in the genome of the isolated strains by PCR. Results: During the summer season of 2010 and 2011, Legionella pneumophila were detected from 163 samples (21.1%) out of 772 samples collected. Among the 163 strains of L. pneumophila, eighty one isolates belonged to serogroup 1 (57.4%), 23 isolates were serogroup 5 (16.3%), 21 isolates were serogroup 6 (14.9%), 8 isolates were serogroup 2 (5.79%), and 8 isolates were identified in serogroup 3 (5.7%). Through PFGE (pulsed-field gel electrophoresis) analysis using Sfi I, genetic types of L. pneumophila were classified into five (A to E) patterns by the band similarity with excess of 70% from public baths. Conclusions: The PFGE patterns of the serotypes showed a tendency for diversity of L. pneumophila. Our results suggest the existence of serological and genetic diversity among the L. pneumophila isolates.

GC-ECD와 GC-MSD를 이용한 유니코나졸 잔류실태조사

김은정(Eun-Jeung Kim),홍채규(Chae-Kyu Hong),최수정(Su-Jeong Choi),이윤정(Yun-Jeong Lee),황인숙(In-Sook Hwang),김무상(Moo-Sang Kim),채영주(Young-Zoo Chae) 한국식품과학회 2013 한국식품과학회지 Vol.45 No.3

간장의 속성제조를 위한 간장국의 고온분해

류병호(Beung-Ho Ryu),조경자(Kyung-Ja Cho),채영주(Young-Ju Chae),박춘옥(Choon-Ok Park) 한국식품영양과학회 1993 한국식품영양과학회지 Vol.22 No.2

간장을 속성으로 제조할 목적으로 간장국을 고온(40, 45, 50℃) 으로 속성분해 하는 조건을 검토 하였다. 국의 고온분해시 40℃에서 식염 농도가 15%이상, 45℃에서는 12%이상, 50℃에서는 8%이상에서 국 분 해액이 안전하였다. 총질소의 용출은 50℃, 식염농도가 9%일 때 1.75%로 가장 높은 수치를 나타내었다. 환원당은 45℃에서 식염농도가 12%일 때 7.2%이였고, formol질소는 45℃에서 식염농도가 12%일 때 0.9%이었다. 점도는 45℃에서 식염농도가 15%일때 12일 경과시 점도가 제일 양호하였다. 한편 국 분해액에서 추출된 유리 아미노산은 45℃일 때 3268㎎%로서 가장 높았다. 유리 아미노산 중 glutamic acid, leucine, arginine, aspartic acid, lysine, valine 및 phenylalanine이 전체 아미노산의 절반 이상을 차지 하였다. This study aims to construct the conditions of thermal hydrolysis(40, 45, 50℃) of koji for the purpose of rapid soy sauce fermentation. Koji hydrolysate was stable for fermentation, when koji hydrolyzed at 40℃ with 12% NaCl or at 45℃ with 8% NaCl. The highest extracted total nitrogen was 1.75%, when the salt level was 9% and at 45℃. The amount of reducing sugar was 7.2% and that of formol nitrogen was 0.9% when NaCl concentration was 12% and at 45℃. The viscosity of koji hydrolyzate was in good condition with 15% NaCl and at 45℃ until after 12days. On the other hands, free amino acid extracted from koji hydrolyzates showed the highest levels of 3268㎎% at 45℃. Free amino acids consisted of glutamic acid, leucine, arginine, aspartic acid, lysine, valine and phenylalanine which dominated 50% of total amino acids.

GC-NPD 동시분석법을 이용한 유니코나졸 잔류실태조사

김은정(Eun-Jeung Kim),최부철(Bu-Chuhl Choi),최수정(Su-Jeong Choi),홍채규(Chae-Kyu Hong),김은희(Eun-Hee Kim),최재만(Chae-Man Choi),서영호(Young-Ho Seo),황영숙,장미라(Mi-Ra Jang),황인숙(In-Sook Hwang),김무상(Moo-Sang Kim),채영주(Young-Zoo 한국식품과학회 2012 한국식품과학회지 Vol.44 No.3

2011년 6월부터 11월까지 농산물 중 GC-NPD 및 GC-MSD를 이용한 동시 다성분 분석법을 이용하여 uniconazole의 잔류실태조사를 실시하였다. 2011년 6월부터 11월까지 서울지역에 유통되고 있는 농산물 121종 총 3,939건에 대하여 잔류실태조사를 실시한 결과 49건에서 uniconazole이 검출되었다. 품목별로는 겨자채가 69.4%로 가장 많이 검출되었다. Uniconazole의 검출양은 0.09 ㎎/㎏에서 17.89 ㎎/㎏로 나타났다. 본 연구에서는 uniconazole에 대하여 GC-NPD 및 GC-MSD를 이용한 동시분석법의 가능성을 검토하였다. GC-NPD의 검출한계와 정량한계는 각각 0.006 ㎎/㎏와 0.018 ㎎/㎏이었다. 겨자채에 표준용액을 0.5, 5 ㎎/㎏ 농도로 하여 회수율을 측정한 결과 83.4%에서 101.4%까지 양호한 결과를 나타내었다. 본 연구를 통하여 동시분석법으로 보다 효율적인 검사가 가능할 것으로 기대된다. The monitoring of the uniconazole residual pesticide for agricultural products was conducted by multiclass pesticide multiresidue methods. Samples were collected from June to November, 2011. Uniconazole pesticide was detected in 49 samples from a total of 3,939 samples. The amount of uniconazole pesticide ranged from 0.09 to 17.89 ㎎/㎏ in 49 samples. This method was described for the simultaneous determination of uniconazole by gas chromatography with a nitrogen phosphorus detector (GC-NPD) and mass spectrometry (MS). The limit of detection and quantification were 0.006 and 0.018 ㎎/㎏ GC-NPD, respectively. For an evaluation of the GC-NPD method, uniconazole spiked into gyeojachae at a level of 0.5, 5 ㎎/㎏ was determined. The recoveries of uniconazole by the GC-NPD method ranged from 83.4 to 101.4%. The results indicate that the method of simultaneous analysis is applicable to uniconazole analysis.

수도권 지하철 전동차에서의 라돈 농도 분포 조사

전재식(Jae-Sik Jeon),서종원(Jong-Won Seo),전명진(Myung-Jin Jeon),엄석원(Seok-Won Eom),채영주(Young-Zoo Chae) 한국대기환경학회 2012 한국대기환경학회지 Vol.28 No.4