• 제목/요약/키워드: Environmental issue

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LCI DB를 활용한 해체공사 환경경제성 평가 (Evaluation of Environmental Economics on Dismantling Projects Using LCI DB)

  • 권석현;김경주;김병수;김상범
    • 한국건설관리학회:학술대회논문집
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    • 한국건설관리학회 2008년도 정기학술발표대회 논문집
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    • pp.233-238
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    • 2008
  • 우리나라는 경제규모에 비해 환경오염물질 배출량이 많으며, 이는 에너지 다소비업종의 비중 증가에 따른 것이다. 이에 따라 에너지 다소비업종 중 하나인 건설 관련 공사에 대한 효율적인 에너지 절약이 이루어지지 않는 문제점이 대두되고 있다. 뿐만 아니라 근래 노후화된 건축물의 해체공사가 빈번하며, 이러한 상황에서 좀 더 나은 에너지 절약효과를 갖기 위해서는 건설공사의 전과정(Life Cycle) 중 해체단계에서 발생하는 에너지소비량, 환경오염물질 배출량, 환경비용등에 관한 기본적인 DB 구축 및 활용방안 개발이 필요할 것이다. 이에 본 연구에서는 지식경제부와 환경부에서 제시하는 LCI DB를 활용하여 해체공사시 발생하는 환경오염물질 배출량을 산출하고 환경오염물질별 환경비용을 환산하여 건축물 해체공사에 대한 환경경제성을 평가하고자 하였다. 이를 위해 관련 자료조사, 기존 문헌연구 및 현장조사 등을 실시하였고 이들 수집자료의 분석결과를 바탕으로 사례대상인 건축물의 환경경제성을 평가하였다.

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낙동강 유역의 친환경 하천 준설을 위한 환경창 수립 방안 (Environmental Windows Setting Method for Environmental-Friendly River Dredging in Nakdong River Basin)

  • 정안철;김성원;김민석;정관수
    • 환경정책연구
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    • 제14권4호
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    • pp.45-61
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    • 2015
  • 국내의 하천 환경은 4대강 사업 이후로 많은 변화가 예상되며, 이 과정에서 하천관리기법 역시 변화가 요구되고 있다. 준설이 그 대표적 예라고 할 수 있지만 준설은 2차 환경피해의 우려가 있다. 이를 위해서 준설의 사회 환경적으로 미치는 부정적인 영향을 최소화하기 위하여 미국의 환경창 제도를 한국에 적용시켜보았다. 자료의 부족을 극복하기 위해 통계학적 기법을 이용한 방안을 제시하였으며, 낙동강 강정고령보 하류부에 적용해보았다. 그 결과, 1개월 동안 준설하는 경우에는 3월에 수행하는 것이 최적으로 나타났으며, 8개월 동안 준설하는 경우에는 8월에 수행하는 것이 최적인 것으로 나타났다. 여기에 홍수기를 고려했을 경우에는 8개월 동안 준설에 대해서 10월에 시작하는 것이 최적인 것으로 나타났다. 환경창 제도와 같이 비구조적 방법은 친환경 준설장비를 개발하는 등의 구조적 방법보다 제도만 잘 정비된다면 단기간에 효과를 볼 수 있으며, 친환경 준설장비를 개발하면서 소요되는 막대한 예산을 절감할 수 있다는 장점이 있으므로 환경창을 준설규정을 수립하는 데 있어서 참고할 수 있을 것으로 판단된다. 환경창의 국내 적용은 하천준설에 대한 연구가 미비했던 국내에 기초자료로써 제공될 수 있을 것으로 판단된다.

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양이온성 고분자(polyethylenimine)가 코팅된 알지네이트/폐바이오매스 복합 흡착소재를 사용한 유해 미세조류 Microcystis aeruginosa의 제거 (Removal of Microcystis aeruginosa using polyethylenimine-coated alginate/waste biomass composite biosorbent)

  • 김호선;변종웅;최인태;박윤환;김석;최윤이
    • 환경생물
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    • 제37권4호
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    • pp.741-748
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    • 2019
  • 본 연구에서는 바이오매스 폐기물인 Corynebacterium glutamium을 Alg를 이용한 고정화와 PEI 표면개질 과정을 통하여 유해 미세조류인 Microcystis aeruginosa를 제거할 수 있는 흡착소재인 PEI-AlgBF를 개발하였다. 녹조의 발생단계에 상관없이 PEI-AlgBF는 수계로부터 M. aeruginosa를 성공적으로 제거할 수 있었으며 유해조류 제거과정에서 M. aeruginosa 세포의 파괴를 유발하지 않았다. 흡착소재의 표면적은 M. aeruginosa의 제거효율에 매우 큰 영향을 주는 주요인자로 확인할 수 있었다. PEI-AlgBF를 사용한 M. aeruginosa 흡착/제거 방식은 기존 기술에 비하여 환경영향성이 낮기 때문에 보다 안전하고 안정적인 유해조류의 제어 방식이 될 것이다.

사출성형공정에서 엘라스토머 재생재의 유동성 (The Fluidity of the Recycled Thermoplastic Elastomer on the Injection Molding process)

  • 노병수;한성렬;정영득
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 2007년도 춘계학술대회 논문집
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    • pp.179-182
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    • 2007
  • In recent, recycling of plastic material has became a major issue due to the landfills and environmental problem. This study investigated fluidity of thermoplastic vulcanizate(TPV), which is for automobile component parts such as weather strip in order to replace ethylene propylene rubber (EPDM). So, using the spiral flow test mold and panel cover mold, we conducted an experiment on fluidity of TPV with injection molding. As results of injection molding experiment, the recycled TPV's flow length was a little bit longer than virgin TPV and a case of panel cover, the filled weight was almost same quantity.

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새로운 조형현상으로서의 표피적 경향에 관한 연구 (A Study on Skin Tendency as New Design Phenomena in Contemporary Environments)

  • 서정연
    • 한국실내디자인학회논문집
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    • 제40호
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    • pp.26-33
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    • 2003
  • Contemporary architecture has two different movements that one is the utilization of digital technology and the other is the inclination to nature. After deconstructivism in architecture, the tendency of design shows the fusion between digitalism and organicism and as a consequence the phenomena of 'skin expression' has emerged which can be thought as 'organic digitalism' or 'digital organicism'. The definition of skin tendency in environmental design is the design of nature based on the technology. As a result, the surface becomes the design issue compared to structure and the momentum for new aesthetic value. There are post-structuralism, complex system theory and the organic architecture as theoretical background for the tendency of skin expression. Specially the ideas of post-structural philosophy has effected deeply to the formation of its movement and also offered the theoretical nutrition for digital architecture. The characteristics of the skin tendency can be analyzed as topological transformation, smooth continuum, deterritorialization, ecological response system, and tactility. These design characteristics has combined with conventional material and design vocabulary to transform and develope new spatial conception.

3-Monochloro-1,2-propanediol(3-MCPD)의 안전성 및 위해성 평가 (Safety and Risk Assessment of 3-Monochloro-1,2-propanediol (3-MCPD))

  • 이병무
    • Toxicological Research
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    • 제18권1호
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    • pp.1-11
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    • 2002
  • 3-Monochloro-1,2-propanediol(3-MCPD) is currently being a matter of concern because of its toxicity. 3-MCPD produced during the acid hydrolysis of soybean products has been reported to be mutagenic, neurotoxic, nephrotoxic and spermatotoxic. Howerer, the carcinogenicity of 3-MCPD is a controversial issue over the past several decades. 3-MCPD characteristically showed a variety of toxicities in reproductive system such as, decrease in sperm number and sperm motility, infertility, loss of sperm function, and weight decrease in ovary. Due to the toxicity of 3-MCPD, exposure to 3-MCPD has been proposed to be reduced to as low a level as technologically feasible. 3-MCPD can be detected in soy sauce or non-soy sauce products. The legal limit for 3-MCPD this year has been suggested to be 20 ppb($\mu\textrm{g}$/kg)in the European Community. In Korea, the permissible level of 3-MCPD is expected to be 0.3 ppm. In this study, 3-MCPD was toxicologically evaluated in terms of risk assessment in humans.

Content Analysis of Food Advertising Directed at Korean Children

  • Kim, Sora;Han, Eun-Jin
    • International Journal of Human Ecology
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    • 제13권2호
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    • pp.101-111
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    • 2012
  • Children have become the target of intense and specialized food advertising efforts. This study examines the content of TV food advertising and discussed possible concerns from the perspective of children. A total of 102 ads were collected from two cable networks aimed at children. Most of the food ads used emotional appeals and did not provide information clues such as nutrition values. Ads with high sales pressure and celebrity endorsements appeared frequently and the ads for snack foods and high-carbohydrate bakery products were dominant. Understanding food ads can be a significant indicator to establish the orientation of consumer ad education and build educational programs appropriate for children. The issue that appears conspicuous in child targeted advertising and marketing is the childhood obesity and food advertising relation; subsequently, there is a need to evolve advertising that targets children into a positive educational information source.

알칼리부여제의 회복에 따른 시멘트 경화체의 충진성에 관한 실험적 연구 (An Experimental Study on the Packing Ability of Hardened Cement Paste According to Penetrate by Alkalization Agent)

  • 김광기;공민호;박선길;김우재;송병창;정강진
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2002년도 가을 학술발표회 논문집
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    • pp.823-828
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    • 2002
  • Concrete used up to date semipermanent architecture material but now day concrete early deterioration emboss social issue because of construction structure and environmental factor. so, many study of deterioration concrete construction improve durability used impregnation alkalization agent. Impregnation alkalization agent deterioration concrete construction spray infiltration or diffusion improve alkali and filler inter minuteness void elaborateness constitution concrete. but many study of harding concrete change inter minuteness void that Is insufficiency also, To study of method recover shape impregnation alkalization agent apply deterioration concrete construction. impregnation alkalization agent infiltration according to test of porosity, premeameter, absorption.

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경기도 남부지역 지표오존농도의 시계열모형 연구 (Analysis of Time Series Models for Ozone at the Southern Part of Gyeonggi-Do in Korea)

  • 이훈자
    • 한국대기환경학회지
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    • 제23권3호
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    • pp.364-372
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    • 2007
  • The ozone concentration is one of the important environmental issue for measurement of the atmospheric condition of the country. In this article, two time series ARE models, the direct ARE model and applied ARE model have been considered for analyzing the ozone data at southern part of the Gyeonggi-Do, Pyeongtaek, Osan and Suwon monitoring sites in Korea. The result shows that the direct ARE model is better suited for describing the ozone concentration in all three sites. In both of the ARE models, eight meteorological variables and four pollution variables are used as the explanatory variables. Also the high level of ozone data (over 80 ppb) have been analyzed at the Pyeongtaek, Osan and Suwon monitoring sites.

전문대학 정보화수준 평가시스템 연구 (Informatization Evaluation System Model for Colleges)

  • 김용식
    • 경영과정보연구
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    • 제12권
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    • pp.37-52
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    • 2003
  • An informatization evaluation is becoming a major issue among vocational colleges, as the 21th century begins. This century is characterized as Knowledge and Information era. Thus it is popular for administrative organizations to use Information Technologies as major tool to innovate themselves. The main objective of this study is develop evaluation indexes on applications of information technologies for vocational colleges because they must operate their education services by using management principles. Four major indexes were recommended to evaluate their information environment of educational service as follows. 1. Strategic Information System 2. Environmental Factors of Information System 3. Informational Resources 4. Utilization of Information Technologies Each index has 4 variables to identify the level of informatization and every variable is consisted of several questions. Such an evaluation system will be applied for vocational colleges to know their own situation of IT application and to develop managerial strategies by using IT. This system also will be useful to compare you with your potential competitors and to find appropriate polices of IT application by measuring the indexes at different points of time.

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