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초음파 봉제와 심 실링된 투습 방수 원단의 물리적 성질
나미희,최규락,마대천,심명희,남복규,이대훈,Na, Mihee,Choi, Kuelak,Ma, Daechun,Shim, Myounghee,Nam, Bokgyu,Lee, Daehoon 한국섬유공학회 2013 한국섬유공학회지 Vol.50 No.1
New techniques of ultrasonic welding and seam sealing have been developed instead of conventional sewing method to improve the performance of seam part of outdoor. The effects of the welding speed, seam sealing speed and washing cycle on the physical properties of seamed fabrics were investigated in this paper. The tenacity of seamed fabrics by welding after seam sealing process is about 70% of the tenacity of the seamed fabrics by conventional sewing after seam sealing process. The increase in speed of welding and seam sealing causes decrease in tenacity of seamed fabrics. The hydrostatic resistance and water vapor transport phenomena of welded fabrics are also discussed. The washing process affects the properties of seamed fabrics very slightly.
나미희 ( Mi Hee Na ),김희숙 ( Hee Sook Kim ),최종명 ( Jong Myoung Choi ) 대한가정학회 2013 Human Ecology Research(HER) Vol.51 No.2
The purpose of this research was to examine the subjective evaluation of sensory images and preferences according to the mechanical properties of linen and ramie fabrics for summer shirts. 54 male and female teachers evaluated the sensory images and preferences of 6 specimens of linen and ramie fabrics sold on the market. For statistical analysis, factor analysis, Mann-Whitney and Kruskal-Wallis test, Pearson correlation, and regression were used. The results were as follows: The sensory images of shirt fabrics were classified into 5 factors: ``smoothness``, ``stiffness``, ``elasticity``, ``dry/coolness``, and ``wetness``. There were partially significant differences by the gender and age in the sensory images for the shirt fabrics. Females were more sensitive than males for the ``stiffness``, ``elasticity``, and ``wetness`` factor and the evaluators in their 20`s felt fabrics were stiffer. The sensory images showed many correlations with the mechanical properties of fabric mostly. The preferences of tactile and purchase were no different according to the gender and age. They preferred a thin and soft sensory image as like ramie/cotton blended fabric and bamboo fabric for summer shirts. The significant sensory image factors affecting tactile preference were ``smoothness``, ``dry/coolness``, and ``elasticity``, and the ones affecting purchase preference were ``smoothness``, ``stiffness``, ``dry/coolness``, and ``elasticity``. W, WT, MMD, and G properties of the mechanical properties of fabrics affected the tactile preference for summer shirt fabrics.
자일로올리고당의 섭취가 변 내 비피더스 균수, Lactic Acid 농도와 지질대사에 미치는 영향
나미희(Na Mi Hee),김우경(Kim Woo Kyoung) 韓國營養學會 2007 Journal of Nutrition and Health Vol.40 No.2
This study investigated the effects of xylooligosaccharide on feces bifidobacteria proliferation, lactic acid concentration and lipid metabolism in healthy woman. Fourteen volunteers were randomly assigned to 2 groups : 1.4 g/day xylooligosaccharide intake group, 2.8 g/day xylooligosaccharide intake group. The duration of the study was 28 days. The amount of feces and excretion time were not affected by xylooligosaccharide intake. The color of feces changed to yellow brown, and hardness of stool and effort to evacuation were reduced by xylooligosaccharide intake. Xylooligosaccharide intake reduced the fecal pH significantly after 14 days in 2.8 g/day intake group (p<0.05). The number of fecal bifidobacteria were significantly increased after 28 days in 1.4 g/day intake group (p<0.05), and in 2.8 g/day intake group, the number of fecal bifidobacteria significantly increased after 14 days (p<0.05). Water contents of feces were not affected by xyloolgosacchride intake. The fecal triglyceride and cholesterol concentrations were increased in 2.8 g/day intake group (p<0.05), and in 1.4 g/day intake group, fecal cholesterol concentration only was increased (p<0.05). The fecal lactic acid concentration was significantly increased in 2.8 g/day intake group (p<0.05). Serum trigly-ceride, cholesterol and glucose concentration were significantly decreased in 2.8 g/day intake group (p<0.05). In conclusion, xylooligosaccharide dietary supplementation may be beneficial to gastrointestinal health and lipid metabolism, and 2.8 g/day intake was more effective than 1.4 g/day intake. (Korean J Nutrition 40(2): 154~161, 2007)
김은애,나미희,안미영 연세대학교 생활과학연구소 1995 生活科學論集 Vol.9 No.-
The purpose of this study was to examine the impact of moisture content of napped fabric on the warm/cool feeling. For the experiment, four specimens, one woven fabric of cotton and three knit fabrics of cotton, acryilics, and polyester were used before and after napping. Moisture contents varied from 0 to 100%. For the objective test, Qmax the maximum absorption rate of heat flow, was measured using KES-FB Thermolabo Ⅱ. Subjective sensory tests were performed with 10 female subjects to compare the warm/cool feeling of the specimens. Results showed that the napping decreased the Qmax values irrespective of the type of fiber. As the moisture content of the specimens increased, the Qmax value increased. However, the difference of Qmax before and after napping was different among the specimens and showed higher values with the knit fabrics. The correlation between Qmax and the paired comparison of the subjective ratings was high for all test fabrics. On the other hand, when the napped cotton (flannel) and acrylics (fleece) were compared, cotton showed a higher correlation coefficient than acrylics, which was attributed to the hydrophilic property of the cotton fiber and the difficulty of subjects to judge the warm/cool feeling of the hydrophobic fiber.
김희숙,나미희 대한가정학회 2012 International Journal of Human Ecology Vol.13 No.1
This research investigated the influences of structural characteristics such as fabrics, mechanical properties, and subjective sensory images on the off-line and on-line preferences to women’s spring/summer suits fabrics to extract the most effective factor towards preference as well as analyze the preferential off-line and on-line differences to predict the exact texture image on-line. Objective evaluations were done for the measurement of the mechanical properties of fabrics using Kawabata’s Evaluation System and subjective evaluations were done with 109 female subjects who value the off-line and on-line sensory image of suit fabrics. For statistical analysis, factor analysis, cluster analysis, t-test, ANOVA, and regression were used. The results were as follows. The preference scores on-line were generally higher than those off-line. For the structural characteristics of fabrics, differences of thickness were observed according to preference clusters, and the preference increased as thickness was lowered off-line and on-line. For mechanical properties, WC influenced off-line and on-line preferences. Fabrics with low compression energy were preferred; however, the effect of SMD was observed off-line only. In subjective sensory images, the ‘smoothness’ image influenced off-line and on-line preferences the most. All sensory images influenced the off-line preferences; however,the effects of ‘flexibility’ and ‘weight’ were not shown on-line.