• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.6
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• pp.3742-3752
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• 2015

This study aims to examine and analyze consumers' perception level and purchase behavior of organic clothing goods with. According to their purchase experience of organic clothing goods, it was found that organic textile products for women like sanitary pad were most and purchase frequency of organic clothing goods was mostly once. Among reasons to purchase organic clothing goods, 'for my health' was most. Non-purchase reason was mostly 'I don't know what organic goods are'. Therefore, there were significant awareness differences of organic clothing goods in "health efficiency" between the purchasing group and the non-purchasing group. In addition, there were significant awareness differences of demographic characteristics and organic clothing goods in sex, age, and "health efficiency" of related major items and in "high quality recognition" and "health efficiency" of residential areas.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.4 no.2
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• pp.114-119
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• 2003

This study is to remove several organic pollutants from wastewater by non-dispersive membrane solvent extraction technique. The distribution coefficients of several solvents were determined and the experimental system was operated counter-currently and cocurrently with respect to the aqueous phase and solvent. In these experiments, as the flow rate of aqueous solution inclosed, due to being shortened contact time to solvent, the rate of removal of organic pollutants decreased and as the flow rate of solvent increased, the rate of removal increased. Meanwhile, the rate of removal of organic pollutants for the countercurrent flow system was higher than that for the occurrent flow system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.5 no.2
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• pp.174-185
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• 2004

Organic pollutants (Phenol, 2-Chlorophenol, Nitrobenzene) were separated from wastewater by nondispersive membrane solvent extraction, using a microporous hydrophobic hollow fiber module. The system was operated countercurrently and cocurrently with the aqueous phase flowing through the fiber lumens and the solvent flowing through the shell side. The distribution coefficients of several solvents (MIBK, IPAc, Hexane) were examined and MIBK was selected as an extracting solvent. Separation efficiency of countercurrent flow method was better than that of cocurrent flow method. Also, the overall mass transfer coefficients were determined.

• Korean Journal of Organic Agriculture
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• v.10 no.2
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• pp.1-28
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• 2002

Regarding the dangers to soil, water and air, which come from current agricultural application measures for nitrogen, a sectoral approach for a non-polluting liquid manure utilization cannot be used any longer. Slurry was not any longer considered as a tiresome waste produced of animal husbandry, but as a valuable fertilizer. The goal of the largest possible utilization of slurry on the farm was and still is in the foreground, An Integrated system approach has to be found. leading to a drastic improvement of nutrient utilization and hence to a considerably reduced nutrient use. This can only be expected, if the organic manure can be applicated at times, when losses through leaching and volatilization can be minimized. The necessary investments for such concepts can clearly be reduced through cooperation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.11
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• pp.8001-8011
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• 2015

This study aims to find evaluative criteria of quality on the organic clothes with college student consumers, categorize them, establish the basis of evaluation criteria, and examine the roles of each attribute according to their demographical characteristics and the association between their quality evaluation and their purchase intention. College students' evaluative criteria of quality factors of organic clothes were three factor; "aesthetic symbolism", "mainterance efficiency", and "functionality". As a result, first this study showed significant differences from the evaluation criteria of organic clothes in sex, major and pocket money among demographical characteristics Second, this study found that college student consumers' experience of purchasing organic clothes considered "aesthetic symbolism", "mainterance efficiency", and "functionality" more important compared to non-purchase group. Third, it was found that there might be differences between future purchase intention group and non-repurchase intention group according to evaluation standard of organic clothes. There was significant differences in "functionality" between the two groups.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.1
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• pp.188-198
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• 2018

Since infants' skin is very weak and has poor adaptability to environment, they are vulnerable to dermatitis caused by chemicals. Organic cotton for baby wear with the same functions in inner and outer wears can be considered the most suitable fiber. Therefore, this study analyzes products and colors of Korean and U.S. baby wear brands which use organic cotton. Of the total of seven organic brands of baby wear examined in this study, three were Korean baby wear brands and four were U.S. brands. and design colors of total 331 items were examined on the web. The results of comparative analysis showed that there were more U.S. brands than Korean brands in designs by uses. Color analysis showed that Korean natural cotton color was preferred and Y, G colors are commonly used, but colors of U.S. brands featured increased variety compared with Korean brands. Therefore, the Korean infant and toddler brand using organic cotton requires more diverse designs and delicate and broad colors.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.8
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• pp.5721-5727
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• 2015

Paint must be resistant to the wear and tear of the atmosphere and should maintain its color and finish for a long time. The solvents of paints were organic solvent and water, common artificial source of VOCs(Volatile organic Solvent) include organic solvent. Using of organic solvent paint was decreased in the interior parts of automotive, exterior parts were still used organic solvent paint. Adhesive strength of water-paint was poor to compare with organic solvent paint and peeled off from the base materials, it was big quality problem. In this study, adhesive characteristics of water-paint and silane mixture was investigated. To improve adhesive strength of water-paint, it was necessary to mixing of adhesive material. Adhesive strength was measured using UTM(Universal Test Instrument) by ASTM D1002 and Peeling off condition was by ASTM D3359. Optimal mixing condition of water-paint and silane adhesive were $25^{\circ}C$, 500rpm, 20min., concentration of silane adhesive was 5 wt%.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.4
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• pp.1993-1998
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• 2011

Semiconductor industry needs to have fine patterns in order to fabricate the high density integrated circuit. For nano-scale patterns, hard-mask is used to multi-layer structure which is formed by CVD (chemical vaporized deposition) process. In this work, we prepared single-layer hard-mask by using organic-inorganic hybrid polymer for spin-on process. The inorganic part of hard-mask was much easier etching than photo resist layer. Beside, the organic part of hard-mask was much harder etching than substrate layer. We characterized the optical and morphological properties to the hard mask films using organic-inorganic hybrid polymer, and then etch rate of photo resist layer and hard-mask film were compared. The hybrid polymer prepared from organic and inorganic materials was found to be useful hard-mask film to form the nano-patterns.

• Journal of Environmental Science International
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• v.18 no.7
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• pp.811-817
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• 2009

To determine changes in nitrogen contents and optimal rates as N fertilizer, we investigated nitrogen characteristics in the slurry in the respond to the application of 0, 0.5, and 1 g of ferrous sulfate or alum /25g of dairy slurry. Additions of ferrous sulfate or alum increase total nitrogen, inorganic nitrogen, available nitrogen, and predicted available nitrogen contents in dairy slurry, resulting in reduction in pH. The best results were found in the treatment with 0.5 g of ferrous sulfate or alum /25 g of dairy slurry. In conclusion, the use of ferrous sulfate or alum as on-farm amendment to dairy slurry should be represented an alternative to improve N in dairy slurry.

• Korean Journal of Organic Agriculture
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• v.12 no.3
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• pp.279-302
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• 2004

The purpose of this study is analyze Development policies on environmental- friendly agriculture(EA) and find out some implications. As consumption of environmental-friendly agriculture products increasing, administrative policies on EA began 1997s and it has been generally expanded in Korea. The strategies for EA aim to promote among human beings and between humanity and nature require. In addition, support to develop horizontal and vertical productions-organization, regionalization, and political support must be further developed. The necessary investments for such concepts can clearly be reduced through cooperation.