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백서 가토 및 닭에 있어서 그 연령에 따라 조직내 Dehydroascorbic Acid Reductase 활성에 대한 연구
김현옥,사혜순,송정식 ( Hyun Ock Kim,Hae Soon Sa,Chung Suk Song ) 생화학분자생물학회 1973 BMB Reports Vol.6 No.3
Dehydro-L-ascorbic acid reductase (DHA-reductase) activities in various tissues of rats, rabbits and chicken were determined and the following results were obtained: 1) Among the DHA-reductase activities in liver, brain, kidney, small intestine, muscle and adrenal of rats, rabbits and chicken, the highest activity was found in adrenal and the lowest activity in muscle of each animal. The DHA-reductase activities in liver, brain and small intestine were lower than that in adrenal, but were higher than that in muscle of each animal and the activity in kidney was slightly lower than those in liver, brain and small intestine. 2) DHA-reductase activities were decreasing immediately after the birth but soon were increasing in liver of rats and rabbits, but the DHA-reductase activity in liver of chicken was increasing immediately after the birth. 3) DHA-reductase activity in rats was found only in cytosol.
정혜원,사미현,송유선,송화순,Chung, Hae-Won,Sa, Mi-Hyun,Song, Yu-Seon,Son, Wha-Soon 한국섬유공학회 2009 한국섬유공학회지 Vol.46 No.5
A drum-type washing machine washes more effectively and consumes less water than the other type washing machines. We need to find the most effective washing conditions to increase the rinsing performance with the reduced amount of rinsing liquid in the drum-type washing machine. In order to determine the most effective washing conditions on the rinsing performance, we have considerd the following factors: main-washing liquid ratio, spin-drying time, spin speed during spin-drying, rinsing liquid ratio, number of rinses, rinsing time, and load of fabric. We also compared the rinsing performance between a controlled wash cycle of the drum-type washing machine and a standard wash cycle of a commercial pulsator-type washing machine. We measured the electrical conductivity of the liquid which was extracted from the fabric after the main-wash and each number of rinse. Increasing the number of rinses was the most important factor in increasing the rinsing performance. Then the rinsing liquor ratio, the main-washing liquid ratio, the load of the fabric, and the spin speed during spin-drying had a decreasing effect on the rinsing performance in that order. In our research the rinsing time and the spin-drying time did not show meaningful difference. The rinsing performance of the drum-type washing machine with a lower rinsing liquor ratio could be the same as or better than that of the pulsator-type washing machine because of the lager drum radius and a much higher spin speed.
백서 가토 및 닭에 있어서 그 년령에 따라 조직내 Dehydroascorbic Acid Reductase 활성에 대한 연구
김현옥,사혜순,송정석,Kim, Hyun-Ock,Sa, Hae-Soon,Song, Chung-Suk 생화학분자생물학회 1973 한국생화학회지 Vol.6 No.3
백서 가토 및 닭의 여러장기에서 dehydro-L-ascorbic acid reductase(DHA-reductase)의 활성을 측정하고 다음과 같은 결과를 얻었다. 1) 백서 가토 및 닭의 각 동물의 간, 뇌, 신, 소장, 근육, 부신에서 DHA-reductase 활성은 모두 부신에서 높았고, 근육에서 가장 낮았다. 간, 뇌, 소장에서 DHA-reductase 활성은 부신에서 보다는 낮고, 근육에서 보다는 높았다. 그리고 신장에서는 간, 뇌, 소장에서 보다 약간 낮았다. 2) 간에서 DHA-reductase 활성은 백서와 가토에서는 생후 일차 떨어지다가 다시 증가 하였고, 닭에서 생후 처음부터 증가 하였다. 3) 백서에서 DHA-reductase 활성은 cytosol에만 있었다. Dehydro-L-ascorbic acid reductase (DHA-reductase) activities in various tissues of rats, rabbits and chicken were determined and the following results were obtained: 1) Among the DHA-reductase activities in liver, brain, kidney, small intestine, muscle and adrenal of rats, rabbits and chicken, the highest activity was found in adrenal and the lowest activity in muscle of each animal. The DHA-reductase activities in liver, brain and small intestine were lower than that in adrenal, but were higher than that in muscle of each animal and the activity in kidney was slighly lower than those in liver, brain and small intestine. 2) DHA-reductase activities were decreasing immediately after the birth but soon were increasing in liver of rats and rabbits, but the DHA-reductase activity in liver of chicken was increasing immediately after the birth. 3) DHA-reductase activity in rats was found only in cytosol.
헹굼성 평가를 위한 세액의 전기전도도 측정과 기존 방법의 비교
정혜원,사미현,송화순,송유선,Chung, Hae-Won,Sa, Mi-Hyun,Song, Wha-Soon,Song, Yu-Seon 한국섬유공학회 2008 한국섬유공학회지 Vol.45 No.4
Drum-type washing machines are gaining in popularity because they have the advantages of a higher washing performance and water conservation. On the other hand, drum-type machines, which have a lower wash liquor-to-fabric ratio, call into question rinsing efficiency. Though rinsing performance is one of the most important factors in effective washing, a criterion method for measuring the rinsing performance has not yet been established. We have used existing methods to evaluate the rinsing performances. In addition, we suggest a method of measuring the electrical conductivity of detergent solutions and verify the relationships with the existing methods. The load was washed once and rinsed from 0 to 5 times. After rinsing, the load was moved to the higher spin extractor, and the extracted solution was measured for alkalinity (IEC 60456), PBIS concentration (AS/NZS 2040.1), LAS concentration, pH and the electrical conductivity of the NaCl solution (KS C 9608) to evaluate the rinsing efficiency. Moreover, LAS in the fabric after the rinsing process was extracted with water by soxhlet and measured. After each step in the laundering process, the load was spun at 600 rpm, 800 rpm or 1000 rpm. Except for the pH method, every other method, which was expressed per unit fabric weight, almost showed the same tendencies as the number of rinses increased. Though, the method of measuring the electrical conductivity of the detergent solutions especially showed the highest correlation with other methods, that method is labor efficient. Therefore measuring the electrical conductivity of detergent solution in this fashion was an efficient way to evaluate rinsing performance.