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문화재 보존 및 복원에 사용되는 천연 광물성안료의 물성평가 - 석청(石靑)중심으로
박주현,정혜영,고인희,정서린,조아현,Park, Ju-Hyun,Jeong, Hye-Yeong,Go, In-Hee,Jeong, Sir-Lin,Jo, A-Hyeon 국립문화재연구소 2015 保存科學硏究 Vol.36 No.-
문화재 수리, 복원재료 및 회화용으로 사용되는 천연광물성 무기안료인 석청의 물리적 특성을 연구하였다. 본 연구를 위해 시중에서 유통되고 있는 청색계열의 안료(KA-한국, JA, JB, JC-일본, CA, CB, CC-중국)를 선정하였다. 연구에 앞서 XRD, XRF분석을 통하여 안료의 결정구조 및 조성을 확인하였으며, 본 연구에 사용된 안료는 Azurite가 주원료임이 확인되었다. 조성물을 확인한 안료는 입도, 색도, 비중, 흡유량 등 물리적 특성을 평가하였으며, 입도에 따른 물리적 특성의 변화를 확인하였다. 안료는 입도가 작아짐에 따라 명도는 커지고, 청색도는 커지다가 다시 작아지는 특성이 있으며, KA가 안료번호에 따라 가장 잘 분급되어 있음을 알 수 있었다. 비중은 입자크기가 커질수록 커지고, 흡유량은 입자크기가 작아질수록 커졌다. 이러한 결과를 토대로 안료의 기초적인 물리적 특성을 규명하고 나아가 문화재 수리, 복원에 선택적으로 사용하는데 도움이 될 것으로 기대한다. The purpose of this study is to analyse the properties of natural mineral pigments used in restoration and conservation of cultural assets. For this study blue-based pigments that are sold in market were selected. The component analysis using by XRF and XRD shows that blue pigment consist of Azurite. And each specimens were evaluated particle size, chromaticity, specific gravity and oil-absorption according to rating system of pigments particle size. Results show that the value of L* increase with the decrease in particle size. The results suggest that the physical properties which is specific gravity, oil-absorption and chromaticity depend on the particle sizes of pigments. When it comes to particle size of pigments decreased by increasing the number of rating system. In addition, the chromaticity related to particle size. The result from this study expects to be used as useful referencing data for conservation and restoration of cultural heritage and understanding phenomena of the properties according to various particle size of Seokcheong pigment.
수온별 아질산 급성 노출에 따른 넙치, Paralichthys olivaceus의 혈액학적 성상 및 혈장성분의 영향
홍수민 ( Su-min Hong ),조아현 ( A-hyun Jo ),김다은 ( Da-eun Kim ),박연숙 ( Yeon-sook Park ),이혜성 ( Hye-sung Lee ),전유현 ( Yu-hyeon Jeon ),김석렬 ( Seok-ryel Kim ),김대희 ( Dae-hee Kim ),강예재 ( Yue Jai Kang ),김준환 ( Jun-hwan 한국어병학회 2021 한국어병학회지 Vol.34 No.2
Olive flounder (Paralichthys olivaceus) (Weight 110.9±17.1 g, length 22.3±1.2 cm) were exposed to waterborne nitrite at 0, 30, 60, 120, 240, 480 and 960 mg NO<sub>2</sub> <sup>-</sup>/L according to water temperature at 20℃ and 25℃ for 96 hours. The lethal concentration 50 (LC<sub>50</sub>) of olive flounder, P. olivaceus exposed to waterborne nitrite was 513.87 mg NO<sub>2</sub> <sup>-</sup>/L at 20℃ and 208.35 mg NO<sub>2</sub> <sup>-</sup>/L at 25℃, which means a significant difference in LC<sub>50</sub> by the water temperature. Hemoglobin and hematocrit were significantly decreased by waterborne nitrite exposure. The inorganic component, plasma calcium, was significantly decreased, and the organic components such as plasma glucose and cholesterol were significantly decreased showing a similar tendency with calcium. In enzymatic components, the AST and ALP were also significantly decreased by nitrite exposure. The results of this study indicate that exposure to nitrite can affect the survival and hematological physiology of P. olivaceus, and the effect of exposure to nitrite had a significant effect on nitrite toxicity depending on the water temperature.
수인성 암모니아 급성노출에 의한 향어, Cyprinus carpio nudus의 반수치사농도, 혈액학적 성상 및 혈장성분의 영향
정지호,은지수,주창훈,조아현,홍수민,김준환,Jeong, Ji-Ho,Eun, Ji-Su,Joo, Chang-Hoon,Jo, A-Hyun,Hong, Su-Min,Kim, Jun-Hwan 한국어병학회 2022 한국어병학회지 Vol.35 No.1
Mirror carp, Cyprinus carpio nudus (weight 26.2±3.1 g, length 11.8±0.5 cm) were exposed to waterborne total ammonia nitrogen (TAN) at 0, 2, 4, 8, 16, 32, 64 and 128 mg TAN/L. The lethal concentration 50 (LC<sub>50</sub>) of mirror carp, C. carpio nudus exposed to waterborne ammonia was 60.38 mg TAN/L. The red blood cell (RBC) count was significantly reduced by ammonia exposure, whereas there was no significant changes in the hemoglobin concentration and hematocrit value. In the plasma components, glucose, total protein, aspartate aminotransferase (AST) and alkaline phosphatase (ALP) were significantly increased by ammonia exposure. The results of this study suggest that the ammonia exposure to C. carpio nudus affects the survival rates, hematological parameters and plasma components as toxicity.
수인성 아질산 급성 노출에 따른 잉어, Cyprinus carpio의 반수치사농도, 혈액학적 성상 및 혈장성분의 영향
박소원 ( So-won Park ),안수민 ( Su-min An ),조아현 ( A-hyun Jo ),김준환 ( Jun-hwan Kim ) 한국어병학회 2023 한국어병학회지 Vol.36 No.2
Common carp (Cyprinus carpio) (Weight 23.05 ± 6.98 g, Length 12.65 ± 1.38 cm) were exposed to waterborne nitrite at 0, 50, 100, 200, 400 and 800 mg NO<sub>2</sub><sup>-</sup>/L for 96 hours. The lethal concentration 50 (LC<sub>50</sub>) of C. carpio exposed to waterborne nitrite was 398.6 mg NO<sub>2</sub><sup>-</sup>/L. Hemoglobin, hematocrit and RBC count were significantly decreased by waterborne nitrite exposure. The MCV (mean mean corpuscular volume) (μl), MCH (mean corpuscular hemoglobin) (pg) and MCHC (mean corpuscular hemoglobin concentration) (%) were significantly increased. The inorganic component, plasma calcium, was significantly increased, and the organic components such as plasma cholesterol and total protein were significantly increased showing a similar tendency with calcium. In enzymatic components, the AST and ALT were also significantly increased by nitrite exposure. The results of this study indicate that exposure to nitrite can affect the survival and hematological physiology of C. carpio.