• Title/Summary/Keyword: Green life

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Prediction of End of Life Photovoltaic Modules with Feed in Tariff (발전차액제도가 고려된 태양광 폐모듈 발생량 예측)

  • Park, Jongsung;Lim, Cheolhyun;Kim, Wooram;Park, Byungwook;Lee, Jin-seok;Lee, Sukho
    • Current Photovoltaic Research
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    • v.8 no.1
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    • pp.39-43
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    • 2020
  • In this study, we predict the generation of end-of-life photovoltaic modules when Feed in Tariff applied, in Republic of Korea. Based on the installation of photovoltaic modules, we prepared three different senarios in order to estimate the generation of end-of-life photovoltaic modules. The senarios are i) early worn-out, ii) mid worn-out and iii) late-worn out senario. We selected the mid worn-out senario to estimated the amount of end-of-life photovoltaic modules in this study. Establishment of the end-of-life module generation scenario predicted generation of end-of-life photovoltaic module, and forecasted generation amount of end-of-life module to which Feed in Tariff was applied in consideration of installed photovoltaic modules installed by Feed in Tariff support. The generation of Feed in Tariff-applied end-of-life modules increased from 2021 to 2025 compared to without Feed in Tariff, and since then, the Feed in Tariff-applied end-of-life modules were generated as waste modules during the relevant period (2021 ~ 2025).

The Relevance of the Area of Home Economics in Practical Arts (Technology & Home Economics) Curriculum to Green Growth Education (실과(기술.가정)교육과정 가정생활영역에서의 녹색성장교육 관련성 탐색)

  • Park, Mi-Jeong
    • Journal of the Korean Home Economics Association
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    • v.48 no.9
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    • pp.89-102
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    • 2010
  • The purpose of this research was to elucidate the relevance of the area of home economics in practical arts (technology & home economics) curriculum to green growth education, finding applicable cases of green growth education content in the field of home economics education. Given this base, we performed a survey with people who majored in home economics education and elementary school teachers on how green growth education related to their education. We studied applied cases and performed a survey by open-ended questions that extracts the green growth education content. In synthesizing the results of these studies so far, we have concluded that home economics education is much related to green growth education, and that with a change of people's conceptions when relating school life to household life, home economics can be a very useful subject that can lead to the practice of the green growth education.

Effect of Organic Amendments on Efficacy of Biological Control of Seedling Damping-off of Cucumber with Several Microbial Products (유기물 첨가가 오이 모잘록병에 대한 미생물 제제의 생물학적 방제 효과 증진에 미치는 영향)

  • Lee, Jong-Moon;Do, Eun-Soo;Baik, Su-Bong;Chun, Se-Chul
    • The Korean Journal of Mycology
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    • v.31 no.1
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    • pp.44-49
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    • 2003
  • Several microbial biocontrol products (Greenbiotech Co., Paju, Korea), Green-all T (Trichoderma harzianum), Green-all S(Bacillus sp.) and Green-all G (Streptomyces sp.) were supplemented with organic amendments such as sawdusts and rice hulls to study on efficacy of biological control of seeding damping-off of cucumber caused by Pythium ultimum. Sawdusts amended into potato dextrose agar alone could inhibit in vitro mycelial growth of P. ultimum. All there microbial products of Green-all T, Green-all G and Green-all S significantly reduced seeding damping-off (LSD, P=0.05). However, several amendments such as sawdusts and rice hulls into Green-all T and Green-all S products did not increase efficacy of biological control compared to non-amended treatment. In contrast, supplements of aminodoctor containing several amino acids (Greenbiotech Co., Korea) into Green-all G product significantly increased efficacy of biological control of seeding damping-off, resulting in from 42% to 2% disease incidence in relation to seedling emergence (LSD, P=0.05). Also, amendment of sawdusts into Tricoderma product significantly increased efficacy of biological control as disease index of 5.0 compared to non-amended control of 56.0 in Green-all T product alone. This indicates that organic amendments could increase efficacy of biological control of cucumber seedling damping-off.

Effects of Temperature, Illumination, and Sodium Ascorbate on Browning of Green Tea Infusion

  • Ye, Qian;Chen, Hao;Zhang, Lin Bin;Ye, Jian Hui;Lu, Jian Liang;Liang, Yue Rong
    • Food Science and Biotechnology
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    • v.18 no.4
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    • pp.932-938
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    • 2009
  • Browning of tea infusion is an obstructive factor influencing shelf life of ready-to-drink green tea. Effects of temperature and illumination on the browning of green tea infusion were investigated. It was shown that both elevated temperature and illumination led to the browning of green tea infusion, but temperature had greater effect on infusion color and level of catechins than illumination. The levels of unoxidized catechins such as (-)-epigallocatechin gallate (EGCg), (-)-epigallocatechin (EGC), (-)-epicatechin gallate (ECg), (-)-epicatechin (EC), and total catechins remaining in the tea infusion were significantly correlated to color parameters of the tea infusion. Sodium ascorbate inhibited the infusion browning by suppressing the oxidation of tea catechins and it is considered to be a more suitable preservative for prolonging shelf life of ready-to-drink green tea than ascorbic acid because it has less effect on tea taste. The effects of temperature and illumination on the epimerization of catechins were also discussed.

Chromosome Aberration Test of Water Extract of Decaffeined Green Tea using Supercritical Carbon Dioxide with Mammalian cell line (초임계이산화탄소를 이용한 탈카페인녹차 열수추출물의 포유동물 세포주를 이용한 염색체이상시험)

  • Koo, Yun-Chang;Lee, Hyun-Sun;Park, Byung-Gyu;Kim, Eun-Jin;Lee, Sun-Joo;Kim, Kyoung-Hoen;Kim, Young-Suk;Chung, Young-Shin;Lee, Kwang-Won
    • Environmental Mutagens and Carcinogens
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    • v.26 no.4
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    • pp.119-124
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    • 2006
  • There are $10{\sim}30%$ polyphenol and $2{\sim}4%$ caffeine in green tea. Caffeine is a kind of alkaloid containing nitrogen which cause stimulation, impatience, headache, insomnia, low birth weight infant. Because of these negative effect, decaffeined beverage came out and decaffeined coffee already have a big market since 1970s. Having proving the physiologic functions of green tea, high consumption of coffee is shifting to green tea. Because of the carcinogenic effect of the organic solvents, decaffeine processing with supercritical carbon dioxide has industrialized and have an advantage in environment-friendly and minimized flavor loss. Decaffeined green tea using supercritical carbon dioxide is considered to be safe but there are not enough study. We investigated the chromosome aberration test with mammalian cell line, CHL. When the cells were treated with 5000, 2000, 1000 ${\mu}g/ml$ and compared with the negative controls, there were no significant(P>0.05) increased chromosome aberration. Same results was observed when adding S9 mixture or not. As a result, water extract of decaffeined green tea using supercritical carbon dioxide does not induce chromosome aberration.

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Land Cover Change and Urban Greenery Prediction in Jabotabek by using Remote Sensing

  • Zain, Alinda-Medrial;Takeuchi, Kazuhiko;Tsunekawa, Atsushi
    • Journal of the Korean Institute of Landscape Architecture International Edition
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    • no.1
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    • pp.59-66
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    • 2001
  • The tremendous growth of population and physical development in the largest urban agglomeration in Indonesia -the Jakarta Metropolitan Region, also known as Jabotabek (Jakarta, Bogor, Tanggerang, Bekasi)- has created many environmental problems, such as land use conversion, increasing urban temperature, water and air pollution, intrusion of seawater, and flooding. These problems have become more serious as the urban green space (trees, shrubs, and groundcovers) has decreased rapidly with the urbanization process. Urban green space directly benefits the urban environment through ameliorating air pollution, controlling temperature, contributing to the balance of the hydrological system, and providing space for recreation and relaxation. Because there is little hard data to support the claim of decreasing greenery in Jabotabek, it is necessary to measure the amount of urban green space. The paper describes the spatial analysis of urban green space within Jabotabek through the use of a geographical information system (GIS). We used GIS and remote sensing to determine land cover change and predicted greenery percentage. Interpretation of Landsat data for 1972, 1983, 1990, and 1997 showed that Jabotabek has experiences rapid development and associated depletion of green open space. The proportion of green open space fell by 23% from 1972 to 1997. We found a low percentage of urban green space in the center of Jakarta but a high percentage in fringe area. The amount of greenery is predicted by the Ratio Vegetation Index (RVI) model: predicted greenery (%) = [146.04] RVI - 134.96. We consider that our result will be useful for landscape planning to improve the environment of Jabotabek.

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Content Analyses of Green Life-Teaching Materials in Korean and Japanese High School Home Economics Textbooks (한.일 고등학교 가정교과서 녹색생활 학습자료 분석)

  • Cho, Jae-Soon;Park, Mi-Jeong;Jang, Sang-Ock;Lee, Yon-Suk
    • Journal of Korean Home Economics Education Association
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    • v.23 no.1
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    • pp.19-36
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    • 2011
  • The purpose of this paper was to explore the teaching materials in the Korean and Japanese high school Home Economics textbooks from the perspective of green life education. Although sustainable living at home has been emphasized as one of the main issues of Home Economics since the first curriculum period, green growth education has reinforced in the 2009 revised curriculum. The content analyses had been done to explore the teaching materials of five areas in the 6 Korean and 4 Japanese high school Home Economics textbooks through two checking steps. The material form of table-figure-pictures was the most frequently shown in both Korean and Japanese textbooks. Green life-teaching materials were more likely in the area of household management/consumer activity than in any other ones. All textbooks of both countries have included the green life-teaching materials according to the elements of contents mentioned in the curricula. The quantity and contents of the materials were some what differ by textbooks, so home economics teacher need to cross check the all textbooks to select useful information although the textbooks have included various types of green materials over the 5 areas. Home Economics curriculum need to actively and concretely include the green growth educational elements suggested by the previous study.

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A Study on the Evaluation Method of Green Remodeling Considering LCA and LCC (LCA 및 LCC를 고려한 환경친화적 리모델링의 평가방법에 관한 연구)

  • Lee, Gwan-Ho;Kim, Nam-Gyu;Rhee, Eon-Ku
    • Journal of the Korean Solar Energy Society
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    • v.23 no.1
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    • pp.57-67
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    • 2003
  • This study aims to presents Evaluation Method of Green Remodeling that analyze the value of environment through expense, using the method of life cycle cost and life cycle assessment simultaneously. The results of this study are summarized as follows. Evaluation Model developed in this study can convert economical value of environment into cost by integrating. In addition, the model can apply as a useful tool to estimation of economical design alternative as well as quantification of environmental loads and costs. Evaluation Model presented In this study observe energy consumption and the environmental load emission with qualification, it can forecast effect of environmental cost that cost estimation is expected to be added to energy cost rate by being possible. Synthetically, when Estimation Model and computer program that developed in this study is applies to the construction industry; reasonable management of environmental load is convenient at each step of Green Remodeling. In addition, at preliminary design phase, practical use may be possible by reasonable yardstick about various alternatives and improvement of design alternatives likewise by grasping environmental effect.