• Korean Journal of Organic Agriculture
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• v.22 no.4
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• pp.841-854
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• 2014

This study aimed to analyze the selection criteria and priority settings for solid culture medium used in hydroponic crop production in farm households. Expert brain storming was carried out to extract solid culture medium selection criteria for hydroponic farming. As a result, 3 criteria of economy (cost), productivity, and environment, and 9 factors were extracted. A questionnaire survey of hydroponic farm households was conducted in Gyeonggi, Gangwon, and Chooncheong provinces. AHP analysis of the hydroponic solid culture medium selection criteria identified productivity as the most important criterion, chosen by 58.7% of the respondents, followed by economy (28.4%) and environment (12.9%). The 9 factors were rated by the respondents in the following decreasing order of importance: 1, crop yield (28.3%); 2, pest occurrence (18.5%); 3, maintenance/management costs (12.0%); 4, convenience of maintenance/management (13.4%); 5, initial investment cost (11.6%); 6, material energy consumption (6.5%); 7, waste recyclability (4.0%); 8, waste disposal costs (3.4%); and 9 environmental emissions (1.81%). These results imply that hydroponic farm households consider cultivation-related quality factors more important than economic factors, such as price of culture medium or installation cost.

• Korean Journal of Organic Agriculture
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• v.8 no.1
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• pp.69-78
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• 1999

Three antagonistic bacterial strains against Valsa ceratosperma, one of the apple tree pathogens, were isolated from the nature and investigated. Out of the about 3,000 species of microorganisms which was isolated from the nature, the 3 strains designated as CH219, CH220 and CH245 were selected through the test of their antagonistic activity. The antagonists showed over 50% of antifungal activity against the growth of Valsa ceratosperma on PDA plates and, by the treatment of the culture broth and the heat-treated culture filtrate of it, showed over 95% of antifungal activity. When we tested on the medium which contained their culture filtrate or heat-treated culture filtrate, the antagonists strongly inhibited Valsa ceratosperma. In bioassay on the apple trees, the antagonists also showed their antifungal activity.

• Journal of the Korean Society of Food Culture
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• v.9 no.3
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• pp.289-301
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• 1994

The purpose of this study was to investigate housewives' perception, interest and consumption of organic food, and to identify the variables influencing on them. The sample was selected from 411 housewives living in Seoul from 1st of September to 20th of September in 1993. Used statistical methods were frequency, percentage, mean, Cronbach's ${\alpha}$, factor analys, ANOVA, Duncan's multiple range test, t-test, correlation, regression analysis and Path analysis. The major results are as follows: 1) Housewives' perception degree of organic food in its variety, easy availability and contribution to health was relatively high level, but price level, reliability and packing condition was somewhat low level. Out of housewives' many images of organic food, taste health care, quality and necessity factors can be implicated. 2) Housewives' interest degree of organic food is somewhat high level 3) Housewives' consumption degree of organic food was relatively low level and was affected by their perception of oraganic food. 4) Frequency to use seasonings was the major independent variable which influenced to housewives' perception degree of organic food, while recognition on enviornmental contamination was the major independent variable which influenced to their interest degree of organic food, and their total perception on organic food was the major independent variable which influenced to their consumption degree of oragnic food. Therefore, it is considered that their total perception to it can decide the demand of organic food 5) Housewives' perception and interest degree of it was the major intervening variable which influenced to their consumption degree of oragnic food.

• Applied Biological Chemistry
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• v.40 no.2
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• pp.107-111
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• 1997

To recover protopectinase (PPase) secreted from Bacillus subtilis IFO 12113, culture filtrate of the microorganism was treated with acetone, methanol, and ethanol, respectively. In the case of treatment with acetone at a ratio of 1: 1 (culture filtrate: acetone, v/v), PPase was purified 1.7-fold with 59.2% recovery The recovery of PPase was increased by increasing the acetone concentration. PPase was purified 4-fold with 100% recovery when the culture filtrate was precipitated with methanol at a ratio of 1 : 2 (culture filtrate: methanol, v/v). However, recovery of PPase was decreased by increasing the methanol concentration. PPase was purified 13.5-fold resulting in 68% recovery by the addition of ethanol with the final ratio 1 : 1(culture filtrate: ethanol, v/v) to the supernatant, which was obtained after precipitation of the culture filtrate with ethanol at a ratio of 1 : 0.5. These results show that methanol treatment is better than other organic solvent treatments for the simple recovery of PPase, whereas fractionated treatment of ethanol can recover PPase with higher purification fold.

• Journal of Digital Convergence
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• v.17 no.2
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• pp.47-57
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• 2019

This study analyze whether the organizational learning culture affects the firm's dynamic capacity and whether the dynamic capacity mediates the relationship between organizational learning culture and management performance. Respectively. First, "The more organizational structure is organic, the higher the integrated relocation capacity and learning capacity. Organizations with organic organizational structures were found to have the ability to successfully adapt to external changes because there is a practice that is not tied to formal processing or procedures. Second, it can be seen that there is a positive (+) influence on the relocation capacity among the dynamic competence of the learning culture of the corporate organization. Third, both sub-factors of dynamic competence have positive (+) influence on business performance. Also, there was no mediating effect of dynamic competence related to learning culture.

• Journal of Plant Biotechnology
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• v.43 no.1
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• pp.138-145
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• 2016

To find the optimal propagation condition for endangered Cypripedium macranthos Sw., also known as lady's slipper orchid, the effect of various organic additives on in vitro germination, protocorm formation and seedling growth was investigated during asymbiotic seed culture. When $100ml{\cdot}L^{-1}$ coconut water was added to the basal medium, the highest germination rate and protocorm formation rate were achieved, with 70.8% and 74.2% respectively. Supplementation of phloem sap from birch tree or maple tree also showed a facilitating effect to improve the germination and protocorm development. With $100ml{\cdot}L^{-1}$ birch sap or maple sap, both the germination and protocorm formation rates were roughly more than 65% and 68%. The roots and buds of the seedlings grew vigorously in the medium containing $100ml{\cdot}L^{-1}$ coconut water or phloem sap, in particular, their bud formation rates increased by more than 70%. Addition of banana powder and peptone could not create a more significantly favorable culture condition, and non-addition had the worst results. Our results demonstrated that proper organic amendments such as coconut water and phloem sap might be preferred to in vitro germination and the growth of seedlings developed from the protocorm of C. macranthos Sw. during asymbiotic seed culture.

• The Research Journal of the Costume Culture
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• v.25 no.3
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• pp.315-326
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• 2017

The purpose of this study is to investigate the design methods and characteristics of papercraft fashion from 2001 to 2015. The study has been conducted through theoretical research and case study. Overall, types of papercraft expressions are classified into the following four categories: narrative papercraft fashion, organic papercraft fashion, variable papercraft fashion, and recycling papercraft fashion. The characteristics and aspects of each type of papercraft is described below. First, narrative papercraft fashion expresses as factual description of the natural environment. These works convey fantastic image by showing fairy tale animals or plants using paper folding or cutting. Second, organic papercraft fashion creates a futuristic shape by expressing organic parts in nature. Also, it often depicts future-oriented images by repeatedly representing organic shapes using uniform patterns in nature. Third, variable papercraft fashion expresses a variety of changing shapes through a flexible design based on the style of wearing. This variation may be accomplished through changeable dress connected to human gestures. Variable papercraft represents play-fulness, which conveys enjoyment to the wearer and the audience. Fourth, recycling papercraft fashion uses paper materials of the past, and recreates them into artworks through handicraft techniques. Recycling papercraft conveys high value added fashion by dissolving the material into pulp.

• Journal of the Korean Society of Food Culture
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• v.30 no.6
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• pp.813-817
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• 2015

Consumers have recently shown great interest in organic foods since they are considered to have higher antioxidant activity compared to conventionally farmed foods. The purpose of this study was to evaluate the general characteristics of organic and conventional spinach, such as length, weight, color, moisture contents, and antioxidant capacity based on ABTS radical scavenging activity, total phenol, and flavonoid contents. Spinach that was used in this study was grown conventionally and organically in Po-Hang, Korea. As the results, conventional spinach showed higher values for length, weight (p<0.001), and moisture content (p<0.05). For antioxidant capacity, organically grown spinach showed higher antioxidant activity than the conventional group based on total phenol and flavonoid contents, but only total flavonoid content was significantly different (p<0.05). For ABTS radical scavenging activity, the conventional group showed a slightly higher capacity, but the difference was not significant. Thus, the organic farming system in spinach showed similar or slightly higher antioxidant activities.

• Korean Institute of Interior Design Journal
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• v.15 no.1 s.54
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• pp.63-70
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• 2006

This study investigates and analyzes natural traits in Gaudi's architectural designs on the assumption that the naturalism in his architectural designs has been built heavily on regional cultural background. In particular, focusing on four buildings Gaudi designed in his late years, this study distinguishes between natural traits found in ornaments and details, and natural traits as organic expression of form. This study shows, first, with regard to natural traits in ornaments and details, organic motives were applied to patterns, plastic objects, and parts of the building. Second, natural traits in organic expression of form were reflected by typifying $Catalu\tilde{n}a$ regional nature, using curved lines of organic shapes and realizing lively natural creatures. It is remarkable that Gaudi developed his architectural designs as unique magic naturalism based on his imagination. And In this century 'Regional Culture' gets more important in architectural designs. Gaudi's architectural works can be appreciated to represent very well $Catalu\tilde{n}a$ regional cultural identity by using properly its natural motives and objects.

• Journal of the Korean Society of Food Culture
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• v.36 no.1
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• pp.103-109
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• 2021

The study was conducted to identify the anti-inflammatory and anti-cancer effects in sprouts of mouse-eyed bean (Rhynchosia nulubilis), ginseng (Panax ginseng), perilla (Perilla frutescens), broccoli (Brassica oleracea var. italica), and lettuce (Lactuca sativa) grown with organic germanium concentrate. Western blot analysis was performed to assess the anti-inflammatory activity of the extract. All extracts exhibited noticeable anti-oxidant activity, indicating a significant correlation between the germanium content and anti-oxidant activity (p<0.05). In particular, rat-eyed bean sprouts with the highest germanium content showed significant anti-inflammatory activity (p<0.05) by significantly inhibiting the expression of the inflammatory complexes, NLRP3, cytokines IL-1β and caspase-1. Ginseng and broccoli sprouts showed strong anti-cancer properties and had high anti-oxidant effects (p<0.001). Germanium-concentrated water allows the mass production of agricultural products containing high concentrations of organic germanium. Agricultural produce grown with germanium concentrate add organic germanium to various physiological active ingredients, increasing the anti-oxidant and anti-cancer effects. These results strongly suggest that agricultural products containing high germanium concentrations can be used as novel health supplements to improve health.