• Title, Summary, Keyword: 환경매체

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환경정책 - 2014년 환경보건정책방향

  • Lee, Ho-Jeung
    • Bulletin of Korea Environmental Preservation Association
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    • pp.5-7
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    • 2014
  • 환경보건정책의 영역은 대기, 수질 등 환경매체에 배출된 오염물질이 수용체인 인간에 도달하여 건강피해를 야기하는 일련의 과정을 규명하여 예방 관리하는 폭넓은 범위를 차지하고 있다. 환경보건정책은 다른 매체별 환경정책에 비해 뒤늦게 출발하였지만 깨끗하고 안전한 환경을 보전하여 국민의 건강을 보호하기 위해서는 앞으로도 환경보건정책에 대한 지속적인 관심과 투자가 필요하다.

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A Preservation of Materials for the Records (자료매체의 보존성)

  • 신종순;최찬호
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.12 no.2
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    • pp.71-84
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    • 2001
  • The purpose of this study is to provide the methods of preservation for paper, microfilm, digital media. First of all, for acidic papers produced in 19~20 centuries, this study evaluates and analyses deterioration and factors causing deterioration. For book, also, environmental condition for preservation, and a preservation mechanism through acid-free procedure were suggested. Second for microfilm, it emphasized physical and chemical properties, oxidised substance during developing film, materials related to preservation. Third, for digital storages, storage conditions and needs, such as life-cycle and capacity were introduced.

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Fate Analysis and Impact Assessment for Vehicle Polycyclic Aromatic Hydrocarbons (PAHs) Emitted from Metropolitan City Using Multimedia Fugacity Model (다매체거동모델을 이용한 대도시 자동차 배출 Polycyclic Aromatic Hydrocarbons (PAHs) 거동 해석 및 영향평가)

  • Rhee, Gahee;Hwangbo, Soonho;Yoo, ChangKyoo
    • Korean Chemical Engineering Research
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    • v.56 no.4
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    • pp.479-495
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    • 2018
  • This study was carried out to research the multimedia fate modeling, concentration distribution and impact assessment of polycyclic aromatic hydrocarbons (PAHs) emitted from automobiles, which are known as carcinogenic and mutation chemicals. The amount of emissions of PAHs was determined based on the census data of automobiles at a target S-city and emission factors of PAHs, where multimedia fugacity modeling was conducted by the restriction of PAHs transfer between air-soil at the impervious area. PAHs' Concentrations and their distributions at several environmental media were predicted by multimedia fugacity model (level III). The residual amounts and the distributions of PAHs through mass transfer of PAHs between environment media were used to assess the health risk of PAHs at unsteady state (level IV), where the sensitivity analyses of the model parameter of each variable were conducted based on Monte Carlo simulation. The experimental result at S-city showed that Fluoranthene among PAHs substances are the highest residual concentrations (60%, 53%, 32% and 34%) at all mediums (atmospheric, water, soil, sediment), respectively, where most of the PAHs were highly accumulated in the sediment media (more than 80%). A result of PAHs concentration changes in S-city over the past 34 years identified that PAHs emissions from all environmental media increased from 1983 to 2005 and decreased until 2016, where the emission of heavy-duty vehicle including truck revealed the largest contribution to the automotive emissions of PAHs at all environment media. The PAHs concentrations in soil and water for the last 34 years showed the less value than the legal standards of PAHs, but the PAHs in air exceeded the air quality standards from 1996 to 2016. The result of this study is expected to contribute the effective management and monitoring of toxic chemicals of PAHs at various environment media of Metropolitan city.

The Application conditions and the Improvement plan of Integration class of elementary school (초등학교 통합학급의 정보매체 활용실태 분석 및 개선방안)

  • Lee, Hwan-Seung;Kim, Young-Ki
    • 한국정보교육학회:학술대회논문집
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    • pp.466-474
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    • 2004
  • 초등학교 통합학급에서의 교육은 과거의 분리교육에서 벗어나 포함교육을 지향하고 있다. 어느 정도의 장애를 떠나 일반학급에서 통합교육을 받고자 한다면 수용하고 그에 해당하는 교육과정과 필요한 지원을 하여야 한다. 특히 통합학급에서 아이들에게 교육하는데 있어서 정보매체를 활용한다면 교육적 효과는 다른 매체 보다 뛰어남을 알 수 있다. 과거의 셈하기와 읽기, 쓰기 교육에서 벗어나 생활중심의 교육이 강조되고 있는 취지에 적절한 정보매체를 활용한다면 보다 질 높은 교육이 이루어짐은 당연할 것이다. 하지만 통합학급의 특수교육 대상아동의 경우 여러 장애를 가지고 있으며 그 유형에 따라 다양한 매체들을 필요로 한다. 하지만 통합학급 환경은 그 필요성과는 달리 어떤 것들을 구비하고 있으며, 활용 실태는 어떻게 되는지 기준 안이 다소 미흡한 것으로 나타나고 있다. 그에 따른 통합학급의 정보매체의 활용실태 분석을 통하여 장애아동 유형별 갖추어야할 시설과 환경 및 자료들은 어떤 것들이 있는지 개선방안을 본 연구를 통해 제시해보고자 하는데 있다.

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The Research of Banner Ads′ for transmitting efficient information (효과적인 정보전달을 위한 배너광고에 관한 연구)

  • 신진희;홍찬석
    • Proceedings of the Korea Society of Design Studies Conference
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    • pp.56-57
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    • 1999
  • 인터넷은 일반 초보자들이 사용하기 쉬운 정보검색 도구의 개발, 상호작용이 가능한 멀티미디어 환경, 다양하고 무한한 정보와 쉬운 정보창출 등과 같은 장점 때문에 지속적인 성장을 하여왔다. 인터넷이 실험매체로서의 모색단계에서 벗어나 본격적인 매체로 성장하고 있는 가운데 기존 4대 매체(신문, 잡지, TV, 라디오)에 이어 제5의 매체로 서서히 자리 매김을 하여 가고 있음을 의미하며 이는 기존 매체의 대중 전달과는 달리 'one-on-one' 매체라는 인터넷의 특징이 광고의 패러다임 전이를 요구하고 있는 것이다.(중략)

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Human Health Risk, Environmental and Economic Assessment Based on Multimedia Fugacity Model for Determination of Best Available Technology (BAT) for VOC Reduction in Industrial Complex (산업단지 VOC 저감 최적가용기법(BAT) 선정을 위한 다매체 거동모델 기반 인체위해성·환경성·경제성 평가)

  • Kim, Yelin;Rhee, Gahee;Heo, Sungku;Nam, Kijeon;Li, Qian;Yoo, ChangKyoo
    • Korean Chemical Engineering Research
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    • v.58 no.3
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    • pp.325-345
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    • 2020
  • Determination of Best available technology (BAT) was suggested to reduce volatile organic compounds (VOCs) in a petrochemical industrial complex, by conducting human health risk, environmental, and economic assessment based on multimedia fugacity model. Fate and distribution of benzene, toluene, ethylbenzene, and xylene (BTEX) was predicted by the multimedia fugacity model, which represent VOCs emitted from the industrial complex in U-city. Media-integrated human health risk assessment and sensitivity analysis were conducted to predict the human health risk of BTEX and identify the critical variable which has adverse effects on human health. Besides, the environmental and economic assessment was conducted to determine the BAT for VOCs reduction. It is concluded that BTEX highly remained in soil media (60%, 61%, 64% and 63%), and xylene has remained as the highest proportion of BTEX in each environment media. From the candidates of BAT, the absorption was excluded due to its high human health risk. Moreover, it is identified that the half-life and exposure coefficient of each exposure route are highly correlated with human health risk by sensitivity analysis. In last, considering environmental and economic assessment, the regenerative thermal oxidation, the regenerative catalytic oxidation, the bio-filtration, the UV oxidation, and the activated carbon adsorption were determined as BAT for reducing VOCs in the petrochemical industrial complex. The suggested BAT determination methodology based on the media-integrated approach can contribute to the application of BAT into the workplace to efficiently manage the discharge facilities and operate an integrated environmental management system.

Flow Experiences and Distorted Sense of Time in Computer-Mediated Environment : Comparative Study of Media Environments (컴퓨터 매개환경에서의 Flow 경험과 시간감각의 왜곡 : 매체환경 간 비교연구)

  • Jang, Phil-Sik
    • The Journal of the Korea Contents Association
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    • v.7 no.4
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    • pp.83-90
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    • 2007
  • Flow theory has been borrowed from psychology to address positive user experiences with computers and Internet. The flow experience in computer-mediated environment (CME) has been correlated to increased communication, loaming, exploratory behavior and positive affect. A comparative experiment between CME and traditional paper-pencil environment was conducted to verify whether particular environments or interfaces are more conducive to yielding flow among users. The results showed that there were no differences in flow dimensions except 'enjoyment' between CME and paper-pencil environment. But the distorted senses of time among users were significantly different between the media environments.

환경저부하형 신절연/소호매체 개발 동향

  • 이동희
    • Electrical & Electronic Materials
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    • v.13 no.2
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    • pp.48-52
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    • 2000
  • 우수한 절연성능과 소호성능을 가진 SF6 가스의 사용이 지구온난화 문제를 배경으로 국제적으로 규제되는 경향에 있다. 이 과정에서 환경을 배려한 차세대의 전력기기·시스템을 구축하기 위해 새로운 절연·소호매체의 개발이 시급한 과제로 대두되어 있다. 본 고에서는 SF6 대체가스의 절연특성에 관한 연구 동향과 SF6 대체가스의 아크 차단특성에 관한 연구 동향 등을 살펴보고, 향후 환경저부하형 신절연/소호매체 개발을 위한 연구 가제 등에 대해 기술해 보았다.

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Modeling for the fate of Organic Chemicals in a Multi-media Environment Using MUSEM (다매체 환경 모델 MUSEM을 이용한 유해화학물질의 환경거동예측 모델링)

  • Roh, Kyong-Joon;Kim, Dong-Myung
    • Journal of the Korean Society for Marine Environment & Energy
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    • v.10 no.4
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    • pp.201-210
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    • 2007
  • Pollution by chemical substances such as POPs, EDCs and PBTs in the ecosystem has become more complex and varied, increasing the possibility of irreversible damage to human health or the ecosystem. It is necessary to have a exposure assessment in a multi-media environment for various chemical substances is required for efficient management. This study applied MUSEM(Multi-media Simplebox-systems Environmental Model), a multimedia environmental model that can simultaneously evaluate the possibility of exposure of hundreds of chemical substances in order to efficiently manage chemical substances that can have negative impact on human health or ecological environment through environmental contamination. MUSEM executed the modeling for Japan by setting all 47 prefectures of japan as the regional area for 62 chemical substances and the rest of the territory of japan, excluding regional area, as the continental area and made the estimation of concentration among environment media in each administrative area and made the sensitivity analysis on Tokyo area. The results of simulation for chemical distribution showed that most of the target chemicals located in water region. The result of sensitivity analysis for octanol-water partition rate showed that the concentration change of soil in urban/industrial area and sediment in freshwater was high. In the case of sensitivity analysis for degradation rate showed that the concentration change of freshwater, soil in urban/industrial area, and sediment in freshwater was high.

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A Study and Analysis on Tritium Radioactivity and Environmental Behavior in Domestic NPPs (국내 원전 삼중수소 방사능 배출 및 환경 거동에 대한 분석 및 고찰)

  • Han, Sang Jun;Lee, Kyeong Jin;Yeom, Jeong Min;Shin, Dae Tewn
    • Journal of Radiation Protection and Research
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    • v.40 no.4
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    • pp.267-276
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    • 2015
  • Several analyses on tritium that is the largest release of gas or liquid radioactive waste from domestic PWR and PHWR NPPs were carried out, such as release comparison, directional frequency of wind and tritium behavior changes in environmental samples. First of all, analysis result showed that tritium released from PHWR was more than ten times as gas and double to three times as liquid in comparison to PWR in 2013. Independent release management in NPP units is needed to precisely control and analyze tritium, since there were 2 units of some NPPs having the same amount of release during analysis. In analysis on frequency of wind direction, average range showed 1.7 to 11.5% by 16-point compass. In case of analysis on sampling points by wind direction, Result showed most of the sampling points are right in places. However, There are some areas needed to examine. In analysis on tritium concentration changes in environmental samples, tritium concentration near NPPs was higher than one far away from NPPs. In case of environmental samples far from PWR, a trace of tritium occur. While, tritium concentration near NPPs was more than or equal to one further from PHWR. In conclusion, tritium occurs considerably in PHWR and is lower than standard in samples. but, it is still detected. Therefore, it is needed to strengthen control in system in NPPs and to consistently monitor tritium in environment.