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Triglyceride의 洗滌性에 關한 硏究 : 基質의 影響 Correlating the substrates
鄭惠嫄 한국의류학회 1984 한국의류학회지 Vol.8 No.1
The effects of Temperature on the removal of triglyceride were studied with soaps having various chain lengths of alkyl group. Cellophane, polyester film and alkali-treated polyester film were soiled with tripalmitin, tagged with C^14, and detergency was evaluated by analysing the tripalmitine on the fabric before and after washing by means of liquid scintillation counting. The results were as following: 1) Triglyceride was completely removed from cellophane in distilled water without surfactant at any temperature, because of the hydrophillic nature of cellulose. The detergency of triglyceride from polyester film fully depended on the state of tripalmitin. The detergency of alkali treated polyester film was better than that of untreated polyester film at lower temperature due to increased hydrophilicity, but worse at higher temperature due to the diffusion of molten tripalmitin into the grooves, formed by alkali treatment. 2) The detergency from polyester film was increased with elevating temperature and after reaching some optimum detergencies, the detergencies were rather decreased with increasing temperature. The temperatures of optimum detergency were shifted to higher with increasing chain length of alkyl group. 3) When the soiled film was baked at 60℃ and 70℃ for 20 min, the detergency vs. temperature was much the same as the case of without-baking. These results indicate that the detergency of triglyceride was largely correlated with the suspending power of surfactants at low temperature and with state of soil and hydrophilicity of substrates with elevating temperature.
과민성이 남녀 중학생의 문제행동에 미치는 영향 : 행동활성화체계와 행동억제체계의 조절효과
정혜원,이주영 한국인지행동치료학회 2021 인지행동치료 Vol.21 No.1
본 연구에서는 과민성이 남녀 중학생의 문제행동에 어떠한 영향을 미치는지 알아보고 행동활 성화체계(BAS)와 행동억제체계(BIS)가 과민성과 내재화 문제 및 외현화 문제 간의 관계를 조 절하는지 검증하고자 하였다. 이를 위해서 12세∼15세 사이의 중학생 186명(남학생 85명, 여 학생 101명)으로부터 수집된 자료를 바탕으로 분석을 실시하였으며 그 결과는 다음과 같다. 첫째, 여학생이 남학생에 비해 유의하게 높은 과민성, BIS, 내재화 문제 수준을 보였다. 둘째, 남녀 모두 과민성, BIS가 높을수록 내재화 문제가 높게 나타났고, 과민성, BAS, BIS가 높을수 록 외현화 문제가 높게 나타났다. 셋째, 위계적 회귀분석에서 남학생 집단에서만 과민성과 내 재화 문제 간 관계에서 BAS의 조절효과가 유의하였다. 이는 남학생 집단에서 BAS의 수준에 따라 과민성이 내재화 문제에 미치는 효과가 상이할 가능성을 시사한다. 마지막으로, 과민성 이 외현화 문제에 미치는 영향에 대한 BAS 및 BIS의 조절효과는 남녀 모두 유의하지 않았으 며, 남녀 모두 외현화 문제에 대해서는 각 변인의 직접 효과만이 유의하였다. 끝으로 본 연구 결과의 이론적, 임상적 의의와 한계점에 대해 논의하였다. This study aims to identify how irritability affects middle school students’ behavioral problems and whether behavioral activation system(BAS) or behavioral inhibition system(BIS) moderates the relationship between the irritability and behavioral problems. For this purpose, this study analyzed the data collected from 186 middle school students at age 12 to 15 (85 boys and 101 girls), and the results of analysis are as follows. First, the girls’ irritability, BIS and internalizing problem were significantly higher than boys’. Second, for both boys and girls, the internalizing problem was higher when the irritability and BIS was high. Also, as the level of the irritability, BAS, and BIS increased, the level of externalizing problem increased. Third, in the hierarchical regression analysis, the moderating effects of BAS was significant only for boys in the relationship between the irritability and internalizing problem. This finding suggests that the effect of irritability on the internalizing problem varies depending on the levels of BAS for boys. Fourth, the moderating effects of the BAS and BIS were not significant for boys nor girls in the relationship between the irritability and externalizing problem. However, for both boys and girls, only the direct effect of the irritability, BAS and BIS were significant for externalizing problem. Finally, based on the findings, the theoretical and clinical implications as well as the limitations of the study were discussed.
효소세제에 첨가한 과탄산나트륨이 세척효과에 미치는 영향
정혜원,유지혜,방종호 한국의류학회 2002 한국의류학회지 Vol.26 No.7
Changes in laundering habits and the efficacy claims made for oxygen bleach added to detergents necessitate a deeper investigation into the testing of the washing efficacy of detergents and washing process. The effect of the addition of a sodium percarbonate and bleach activator TAED to an enzyme containing detergent on the soil removal and antimicrobial properties were investigated with the measuring of residual H_2O_2. The addition of sodium percarbonates to enzyme containing detergent lowered the soil removal of EMPA 116 cloth. But sodium percarbonates had greater effects on that of colored stained cloths such as EMPA 115 and artificially soiled with wine and red pepper while they were presoaked at 20℃ or higher for 30 minutes or longer. Most of hydrogen peroxide was remained after washing. Over 99.9% of Staphylococcus aureus on the cotton cloth was removed in every washing solutions, but the cloth washed with eazyme containing detergent or detegent with oxygen bleach didn't show the antimicrobial property.
체외수정 및 배양에서 Ham's F-10 배양액과 Medi-Cult 배양액의 비교
정혜원 梨花女子大學校 醫科大學 醫科學硏究所 1996 EMJ (Ewha medical journal) Vol.19 No.1
The media for assisted fertilization from Medi-Cult is based on a Synthetic Serum Replacement(SSR). The main principle of SSR is a metal iron buffer containing a balanced mixture of iron and trace metals. Recently, Synthetic Serum Supplement(SSS) and Medi-cult are commonly used. These synthetic substitutes have some advandages, such as safty from viral contamination and no needs of bioassay. To compare the usefulness between the Medi-cult and Ham's F-10 supplemented with fetal cord serum for the culture medium of in vitro fertilization, fertilization rate, cleavage rate and pregnancy rate were studied. It is concluded that Medi-cult was better than Ham's F-10 supplemented with fetal cord serum according to fertilization rate, cleavage rate, pregnancy rate and ongoing pregnancy, but that differences did not have statistical significance.