• 한국기계가공학회지
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• 제15권5호
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• pp.100-108
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• 2016

In various industries, many researches studies have been done in using nano thin film fabrication technology. In the field of printed electronics, various electronic devices can be fabricated using a direct printing process of on multiple functional materials. It has the advantages of low prices, environment-friendly environmentally friendly, flexibleility, large scale, mass production produced, simple process and so on. In this study, a viable thin film fabrication technology has beenwas introduced using the surface acoustic wave mechanism for thin film deposition. Fabrication of thin films using organic, inorganic and composite of organic/inorganic materials have been were analyzed through the experimental research. In this experiment, organic material MEH:PPV, inorganic material ZnO and composite material MEH:PPV/ZnO have been depo sited as thin films.

• 한국재료학회:학술대회논문집
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• 한국재료학회 2007년도 추계학술발표대회 및
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• pp.24.2-24.2
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• 2007

• 한국유기농업학회지
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• 제22권1호
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• pp.129-145
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• 2014

서양금혼초의 군락 형성에 따른 경쟁적 우세원인을 규명하고 친환경농자재 개발을 위한 기초자료로 제공하고자 생육특성과 Allelopathy 효과를 알아보았다. 서양금혼초의 생육특성은 예초지역과 비예초지역간의 묘조(苗條) 수, 지상부 직경과 화주 수를 비교한 결과 예초지역의 묘조(苗條) 수, 지상부의 직경과 화주수가 비예초지역보다 높은 것으로 조사되었고, 서양금혼초의 수용성 추출액에 대한 레드클로버(Trifolium pratense), 들묵새(Festuca myuros), 도깨비바늘(Bidens bipinnata) 등 실험식물 14종 대해 발아와 생장 실험 결과 일반적으로 수용성 추출액의 농도가 증가함에 따라 검정식물의 발아율, 유식물의 뿌리털, shoot, root의 생장이 억제되었고 검정식물의 종류와 부위에 따라 억제정도에 있어서 차이를 보였다. 또한 서양금혼초의 수용성 추출액에 대한 실험곰팡이의 생장에 있어서는 Pythium속, Phytophthora속은 수용성 추출액의 농도가 높아짐에 따라 성장이 억제되는 경향을 보인 반면, Rhizoctonia속인 경우에는 농도가 높아짐에 따라 생장억제 현상이 뚜렷하지 않았다. 이와 같은 결과를 종합하여 보면 서양금혼초의 예초는 서양금혼초의 Split현상을 유도하여 더 많은 영양번식과 종자번식을 일으켜 군락을 형성하고, 서양금혼초에 함유된 allelochemicals에 의해 타 식물체의 발아와 생장, 미생물의 생장 등에 관여하기 때문에 제주도내 생태계에서 경쟁적 우위를 점하고 있으며, 친환경농자재로서의 활용 가능성이 있는 것으로 판단되었다.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2005년도 춘계학술발표대회 논문집
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• pp.207-211
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• 2005

This research is aimed to study the finishing material applied in interior space for improving residential environment. First of all, it finds out what is 'Sick Building Syndrome' and 'Sick House Syndrome', how harmful to human body about indoor air pollution substance (such as volatility organic compound, formaldehyde) and investigate the effect when the environment-friendly finishing material is used. Secondly, classify and examine all kind of finishing material applied in interior space. Finally, after emphasize the importance of environment-friendly finishing material from domestic or overseas, this research suggest the basic information of environment-friendly finishing material in order to use in the future buildings.

• 한국생활과학회지
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• 제21권4호
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• pp.781-790
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• 2012

In midst of growing interest and awareness towards sustainability and being "green", there has been increased demand for sustainable clothing. In the purpose of boosting eco-friendly textiles industry, this research was conducted by investigating environmentally-conscious clothing behavior of university students and assessing their views on eco-friendliness of fibers. Thus, their awareness on recycled polyester fiber was evaluated. The research was conducted by surveying 257 university students residing in Daejeon. The data were analyzed with descriptive statistics, factor analysis, and reliability analysis, using SPSS 19.0. The results were as follows. 1) The majority of the subjects answered "Disposing clothing in the clothing recycling container" to reduce environmental impact. 2) Six factors of eco-friendliness of fiber were extracted as reutilization, unfinishedness, economics, environment preservation, natural materials, and slow fashion by using factor analysis. 3) Subjects scored organic cotton as most eco-friendly among various fibers. Recycled polyester fiber was graded less sustainable than natural fiber, but more eco-friendly than artificial one. 4) In assessment of subject's awareness of recycled polyester fiber, they highly valued on resource-reutilization and economics, but less valued on its hygiene, thermal insulation and health-functionality.

• 한국토양비료학회지
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• 제50권4호
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• pp.318-324
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• 2017

Lime bordeaux mixture (LBM) and lime sulfur mixture (LSM) are representative environmental friendly organic materials for prevention of insect pests in South Korea. Recently, those have been widely used as an alternative for chemical pesticides in eco-friendly farms. However, South Korea has not established even recommendation of LBM and LSM considering the stability of heavy metals in soil. The aim of this study was to evaluate the accumulation of hazardous heavy metals in soil and plant with long-term application of LBM and LSM. Firstly, we investigated the amount of LBM and LSM used per year in several eco-friendly farms to determine a standard application rate of both materials. The pepper plant was grown on the pot in greenhouse for 14 weeks. Both materials were applied at 0, 1, 3, and 9 times of standard application rates (2.56 and $1.28L\;ha^{-1}$ of LBM and LSM per year, respectively). Dry matter yield of pepper and heavy metals (As, Cd, Cu, Hg, Ni, Pb, and Zn) concentration in soil and pepper plant were measured after 14 weeks. Yield of pepper plant did not significantly chang with up to application rate of 1 times, thereafter it markedly decreased with more than 3 times. With increasing LBM and LSM application, the concentration of Cu and Zn in soil significantly increased. Especially, Zn concentration in pepper significantly increased with increasing application rates of both materials. This might resulted in significant decrease in dry matter yield of pepper. The concentrations of those heavy metals in soil did not exceed safety levels ($150mg\;kg^{-1}$ for Cu and $300mg\;kg^{-1}$ for Zn) established by the Korean Soil Environmental Conservation Act as well as concentration of heavy metals in pepper plant by Korean Ministry of Food and Drug Safety. However, particular attention should be paid for heavy metal safety and crop productivity when using LBM and LSM in the organic farm.

• 한국유기농업학회:학술대회논문집
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• 한국유기농학회 2009년도 하반기 학술대회
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• pp.316-316
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• 2009

This study was conducted to investigate the effects of environment-friendly materials on garlic cultivation, and the methods for processing garlic at proper ripening stage to increase its antioxidant properties and market value. The functional properties of garlic and processed black garlic were analyzed in vitro and ex vivo. The ethanol extracts of garlic and black garlic were used in the antioxidant, linoleic acid autooxidation, lipid oxidation and RAW264.7 indicator cell using NO induced activity analyses. Also, toxicity tests by RBL-2H3 and RAW264.7 indicator cell using MTT assay were compared. Obesity inhibition test of garlic and black garlic were also studied.

• 한국유기농업학회지
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• 제22권2호
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• pp.241-254
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• 2014

This case study surveyed management situations of environmentally friendly farming(EFF) producers' organization and their main activities. Farmers are aging as an average age of 55-year old and producing fruit-bearing vegetables. The EFF did not increase farmer's income, however, price and income was stabilized more than that of conventional farming because of contract farming. Farm household liabilities are caused by purchasing agricultural machinery, materials and so on. Farmers of EFF have been also cultivating conventional farming, but they don't plan much conversion intention of conventional farming into EFF owing to lack of differentiated and stable market for their EFF products. And they are guessing that EFF income will increase a little. For increasing of EFF income, they think that it is necessary to reduce production cost, produce high quality production, develop processing foods, enlarge contract farming and so on.

• KIEAE Journal
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• 제7권3호
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• pp.57-62
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• 2007

Most of current building materials are made of organic compounds or at least made with chemical treatments. Though easy to use and comparatively pay less, those materials are generally not enviornmentally sound. VOC is one of harmful effects. On contrary, natural materials such as soil are usually eco-friendly, and environmentally sustainable as well if not treated in autoclaves. Acoustica materials made of such environmentally sound and sustainable could be widely used. It is aimed to prove that soil based materials could be effectively used in acoustical fields rather than the other usual materials. Experiments with various types of soil blocks and soil plaster were performed. It is proved that the soil plaster has better apsorption features than cement plaster. Soil blocks have higher absorption cofficients than soil plaster, due to the thickness, and the absorption characteristics can be controlled by the design of the blocks.

• 현장농수산연구지
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• 제16권1호
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• pp.37-53
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• 2014

본 연구의 목적은 농업후계자들이 대학에서 전문교육을 받고 귀향한 후 친환경농업을 실천하는 데 따른 어려움을 파악하고 이를 해결할 수 있는 방안을 검토하는 데 있다. 본 연구의 조사대상은 전체 한농대 졸업생 감귤농가 24명 중에서 친환경농업을 실천하고 있거나 실천 경험이 있는 총 8명 중 조사에 응한 6농가이며, 개방형 설문지에 의한 사례 연구 방식으로 분석되었다. 사례농가들의 영농실태 분석결과, 이들은 기후변화 및 시장개발에 대응하기 위해 작목전환과 경영의 다각화를 도모하고 있으며, 농법으로는 한 농가만이 무농약 수준의 친환경농업을 희망하고 있고 대부분 유기재배를 지향하고 있다. 사례농가의 경영비 분석결과, 자재비 기준으로 물재비는 더 적게 들지만 관행농업과 같은 수준의 상품성을 얻기 위해서는 노력비가 더 들어가야 하는 것으로 조사되었다. 친환경농업의 생산량은 관행농업에 비해 20-50% 정도 감소하며, 판매가격은 10-50% 높은 것으로 나타났다. 친환경 감귤농가의 애로사항으로는 유기농업 기술 부족과 친환경농업에 적합한 판로부족이며 규모확대를 위한 토지구입이 어려운 것은 제주 농업이 갖는 특수한 제약조건이다. 졸업생 농가의 친환경농법으로의 전환은 부모님과의 합의가 어려운 문제로 나타나고 있으며, 친환경농업 기술을 자문 받을 수 있는 지역의 창구가 없다는 점이 지적되었다. 졸업생농가가 친환경농법으로 전환하기 위해서는 농업기술원 및 농업기술센타를 중심으로 친환경농업 선진농가와의 연계를 통해서 지속적인 기술교육과 자문이 이루어질 수 있도록 가칭 '제주 친환경 생태 유기농업 포럼'을 구성하여 기술자문 및 현장애로 기술이 개발 보급될 필요가 있다. 친환경 감귤의 적정 가격과 판로를 확보하기 위해서는 제주 지역의 로컬푸드와 연계된 판매활동과 육지의 로컬푸드와의 연계도 필요하다. 안전성과 신선도의 가치를 소비자가 신뢰하고 구매할 수 있는 다양한 유통채널을 확보해야 한다. 대부분의 사례농가의 소득증대를 위해서 장기적으로 체험이나 관광과 연계할 수 있는 6차농업의 농장경영을 구상할 필요가 있다. 다양한 품종의 감귤을 도입하여 다양성을 확보하고 체험 및 관광과 연계시켜 생태 유기농장으로 발전해 가야 한다. 이를 위해서는 국내외 선진 농장을 벤치마킹하고 정책사업과 연계할 수 있는 기반을 조성해야 한다. 한국농수산대학에서는 제주지역 졸업생들이 친환경 유기농업을 통해서 경영의 안정을 꾀하고 지역농업의 리더가 될 수 있도록 연구기관 및 보급기관과 연계하여 제주지역에 맞는 지원 프로그램을 개발하고 이를 바탕으로 졸업 후에도 지속적으로 새로운 정보와 기술을 제공해야 한다.