• Title/Summary/Keyword: Environmental Elements

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Investigation of toxic organic solvent exposure in work places (작업장에서의 유해 유기용제 폭로에 관한 연구)

  • Jo, Young Min;Kang, Sang Wan;Oh, Jong Min
    • Journal of Environmental Impact Assessment
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    • v.9 no.1
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    • pp.75-86
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    • 2000
  • The purpose of this work was to document the conditions regarding organic solvent exposure to the workers in paint industry. Air concentrations of organic solvents were measured by passive personal samplers and analyzed by a gas chromatography. Urine samples for hippuric test were also taken from 330 workers who have worked at seven domestic factories for more than two years. Amongst 25 organic elements detected in the indoor environment of working places, toluene was the most common element, and methanol showed the highest mean concentration(18.2ppm). A few elements including methylethyl ketone and toluene partially exceeded the Korean Permissible Exposure Limit. A lack of environmental facilities such as exhaust ventilation, automatic cleaning system, and personal safety devices at present work plaus brings about various occupational diseases.

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An Study on the Evaluation of Thermal Indoor Environment and Thermal Sensations during Winter and Summer in Elderly Welfare Facilities (老人福祉施設의 冬.夏節期 室內 溫熱環境 測定 및 溫熱感 評價)

  • Kwak, Ho;Ryoo, Woo-Dong;Hwang, Kwang-Il;Hong, Won-Hwa
    • Journal of the Korean housing association
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    • v.14 no.1
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    • pp.19-27
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    • 2003
  • This study aims to survey the living spaces of the welfare facilities for the aged to get the objective relationships between the physical thermal environment and the users' subjective responses. The surveys were made twice in winter and once in summer during 2001 and 2002. An ambient temperature, relative humidity, air velocity, globe temperature were measured as physical elements of thermal environment and the ASHRAE Psychophysical Voting Scale were used as an evaluation index for subjective responses. As the results, the aged respond thermally comfortable, in spite of the differences among important factors such as thermal sensations, humidity sensations and air velocity sensations. Also the physical thermal environmental elements and the subjective responses indices exceed thermal comfort range calculated by PMV(Predicted Mean Vote) and PPD(Predicted Percentage Dissatisfied). It shows that the insulation of walls of the facilities is not enough for heating and cooling seasons, and the indoor environmental control is necessary.

Abundances of Uranium and Radon in Groundwater of Taejeon Area (대전지역 지하수에 함유된 우라늄 및 라돈의 함량)

  • Han, Jeong-Hee;Park, Kye-Hun
    • Economic and Environmental Geology
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    • v.29 no.5
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    • pp.589-595
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    • 1996
  • The concentration of radioactive elements was measured from the groundwater samples of Taejeon Area. U and Rn concentrations of very high level were detected from many places, especially around Yusung. These levels are much higher than the concentration standards for the drinking water proposed by the United States Environmental Protection Agency. However, in Korea, there are no standard levels for the radioactive elements in drinking water yet. We think that it is necessary to provide such standards as soon as possible, and that the determination of radioactive elements in groundwater should be included in the routine analysis items for the drinking water quality, because many people currently use such relatively high level radioactive groundwater as their drinking water, especially around Yusung area.

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Distribution Characteristics of Surface Sediments and Metal Elements in Hampyong Bay, the Southwestern Coast of Korea (함평만 표층퇴적물과 금속원소들의 분포 특성)

  • Youn Seok-Tai;Koh Yeong-Koo;Ryu Sang-Ock
    • Journal of Environmental Science International
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    • v.8 no.6
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    • pp.677-684
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    • 1999
  • To investigate size distribution and metallic elements of surface sediments in Hampyong Bay, the southwestern coast of Korea, sedimentological and geochemical studies on surface sediments are carried out. The surface sediments of Hampyong Bay are classified into gravel, muddy sandy gravel, gravelly muddy sand, gravelly sandy mud, mud facies in accordance with areal characteristics. The coarse sediments are distributed on the subtidal zone along the main tidal channel and southeast intertidal flat of Hampyong Bay. On the other hand, the fine sediments are dominated in northeast and west intertidal flat of Hampyong Bay. Most metallic elements except for Ba in the sediments are closely interrelated with fine sediments and mutually with each element. Ba is maybe related with sandy sediments and inversely related with carbonate contents. Normalized by Al content, the sediment do not show any remarkable metal enrichments influenced by resonable artificial or environmental factors.

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Perception of the Professionals for the Environment-Friendly Apartments (환경친화 공동주택에 대한 전문가인식 변화 연구)

  • Ryu, Ji-Won;Park, Won-Gyu
    • Journal of the Korean housing association
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    • v.18 no.4
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    • pp.89-96
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    • 2007
  • This study was intended to examine the change in the perception of the professionals for the environment-friendly apartments. After result of implementing the question survey against the professionals two times, the degree of importance in the environment-friendly design elements didn't show any significant change. However, it showed the degree of maturity on the concept of environment-friendly development is widely spreaded in terms of social, economic and environmental aspects. Based on the description of such results, the conclusion can be deduced as follow; 1) Presumably it would require 5 years for the diffusion of the concept of environment-friendly apartments and 10 years for the construction of developing its materialization and settlement respectively, 2) The proper density would be designed in $150{\sim}200%$ in view of the environmental and economic aspects. 3) It is necessary to change the existing system into the District Unit oriented planning & design method in order to apply the environmental design elements in smooth manner.

Simulation of corroded RC structures using a three-dimensional irregular lattice model

  • Kim, Kunhwi;Bolander, John E.;Lim, Yun Mook
    • Structural Engineering and Mechanics
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    • v.41 no.5
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    • pp.645-662
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    • 2012
  • Deteriorative effects of steel corrosion on the structural response of reinforced concrete are simulated for varying degrees of corrosion. The simulation approach is based on a three-dimensional irregular lattice model of the bulk concrete, in which fracture is modeled using a crack band approach that conserves fracture energy. Frame elements and bond link elements represent the reinforcing steel and its interface with the concrete, respectively. Polylinear stress-slip properties of the link elements are determined, for several degrees of corrosion, through comparisons with direct pullout tests reported in the literature. The link properties are then used for the lattice modeling of reinforced concrete beams with similar degrees of corrosion of the main reinforcing steel. The model is successful in simulating several important effects of steel corrosion, including increased deflections, changes in flexural cracking behavior, and reduced yield load of the beam specimens.

Environmental Assessment of Heavy Metals Anna Abandoned Metalliferous Mine in Korea (국내 휴/폐광 금속황산 주변의 중금속 환경오염 평가)

  • 정명채;정문영;최연왕
    • Economic and Environmental Geology
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    • v.37 no.1
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    • pp.21-33
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    • 2004
  • The objective of this study is to review of environmental assessment of heavy metals derived from various metalliferous mines in Korea. As a results of national wide research for heavy metal contaminations in the vicinity of metalleferous mines, the main contaminants are mine waste materials including tailings. From the materials, toxic elements including As, Cd, Cu, Pb and Zn can be dispersed into downstream through wind and water. Thus, soils around the mines contain elevated levels of those elements, which are over the guide values for environmental regulation of soils in Korea. Arsenic is one of the most important elements contaminated by mining activities, to a less extent, Cd, Cu, Pb and Zn. In spite of remediation works for some metal mines by the government, there are still lots of abandoned mines which are necessary for reclamation of mining sites. This study also includes that metal concentrations in soils and tailings can be varied upon various decomposition methods including 0.1N HC1 and aqua regia and sequential extraction scheme, with differences in each element, too. This may be due to geochemical characteristics of the elements, such as solubility, mobility and chemical forms in the geochemical environment. Finally, it is suggested that a certain organization should be runned by Korean government for management of abandoned mines.

Environmental Cognition of Buddhism in the View of the Environmental Psychology(I) -Formation of Concept- (환경심리 측면에서 본 불교의 대상인식(I) -개념설정을 중심으로-)

  • 김태경;최기수
    • Journal of the Korean Institute of Landscape Architecture
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    • v.20 no.3
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    • pp.21-32
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    • 1992
  • This paper is studied on the concept of environmental cognition on accordance with the oriental(especially Buddhism) process of thinking. The Yeongiron(theroy : one of th most famous philosophy of Buddhism, the theory of cause and occasion) consists of the upgam-yeongi, the aroeyasik-yeongi, the chinyeo-yeongi and the pupkye-yeongi. And the concept of these theory are as follows: The conceptural elements of upgam-yeongi consist of sack(色), soo(受), sand(想), hand(行), sik(識). The elements connects with the western environmental psychology such as sack and objects, soo and stimuli, sand and perception, hand and cognition, sik and behavior. Similarly, aroeyasik-yeongi that consist of sangbun(相分), kyunbun(見分), chajungbun(自證分), chungjajungbun(證自證分) connects with objects, perception, cognition, behavior too. The chinyeo-yeongi divide into smase(三細) and yukchu(육추), the samse consist of mumyungupsang(無 明業相), nungyunsand(能見相), kyungyesand(境界相) and the yukchu consist of chisang(智相), sangsoksang(相續相), chipchisang(執取相), kyemyungjasang(計明字相), kiupsang(起業相), upgyegosang(業繫苦相). These elements are relates with the concept of western environmental psychology from objects to behavior too. Pupkye-yeongi represent a characteristic of objects itself rather than a process of environmental cognition. However this study has limitations that the religion and scientific methods should be compare. sack(色) : an elements of it's derivation, all kinds of material soo(受) : a function of reception, feeling sang(想) : a representation of a thought in the mind hang(行) : mental operation sik(識) : a function of judgement sangbun(相分) : the thing in itself kyunbun(見分) : a reflection in the mind chajungbun(自證分) : confirmation of kyunbun chungjajungbyn(證自證分) : self-consciousness through self-examination mumyungupsang(無明業相) : a state of mixture with the object and the subject nungyunsang(能見相) : an operation of the subject kyungyesang(境界相) : a formation of object chisang(智相) : the beginning of distinction sangsoksang(相續相) : a judgement chipchisang(執取相) : a rsponse kiupsang(起業相) : have a influence to the next behavior upgyegosang(業界苦相) : retribution

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The Effects of Green Marketing Activities of New Energy Vehicle Companies on Purchase Intention: Focused on the Mediating Effects of Environmental Involvement (신에너지 자동차 기업의 그린마케팅 활동이 구매의도에 미치는 영향: 환경관여도의 매개효과를 중심으로)

  • Lyu, Yang;Jin, Chunhua
    • Journal of Digital Convergence
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    • v.20 no.5
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    • pp.93-98
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    • 2022
  • This research emphasized that the importance of green marketing activities elements such as green product, green price, green place, and green promotion. Moreover, it focused on verifying the effects of these four elements on purchase intention through environmental involvement. To verify this, an empirical analysis was conducted on Chinese consumers who have experienced or are considering purchasing a new energy vehicle. The research results are as follows. First, all four elements of green marketing activities improve environmental involvement. Second, environmental involvement was found to increase the level of purchase intention. Third, environmental involvement has a partial mediating effects in the relationship between the four elements of green marketing activities and purchase intention. Finally, the limitations of this study and future research directions were discussed.

A Revision of Evaluation Chart and an Evaluation of Site-Based Environmental Education Programs (체험환경교육 프로그램 보고서 평가틀의 개선 및 프로그램 평가)

  • Park, Tae-Yoon;Noh, Kyung-Im;Jung, Cheol
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.7 no.5
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    • pp.1-11
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    • 2004
  • The purposes of this study are to revise an site-based environmental education(EE) Program evaluation chart and to evaluate site-based EE programs using the chart. For revising the evaluation chart, several elements in the former chart were changed, infused, deleted, integrated, or split. The points of some elements in the former chart were also changed. The revised chart consist of 38 elements in 6 areas: purpose and goal, teaching and learning plan, teaching and learning process, educational effect and programs evaluation, Program characteristic, and program operation. Using the revised chart, the researchers evaluated 159 site-based EE programs, funded by the Korean Ministry of Environment in 2002. The result indicated that the mark of 'teaching and learning plan' area is higher than other areas, while the mark of 'educational effect and programs evaluation' is the lowest. On the basis of evaluation, the researchers offered some recommendations for the Korean site-based EE programs.