• Title/Summary/Keyword: 미장

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연-아연광산 지역 내 복토된 광미장 부지 농작물(벼)의 체내 중금속 오염도

  • 이평구;신영식;최상훈
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2004.09a
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    • pp.168-171
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    • 2004
  • 과거 광미장으로 사용되었던 곳을 복토 후 농경지로 전환한 지역을 대상으로 채취한 벼의 중금속 체내 흡수도를 평가하고자 하였다. 오염된 논에서 채취한 벼 뿌리의 중금속 함량은 배경 뿌리시료에 비교하면, Cd 65배, Pb 24배, Zn 15배, As 8.4배, Ni 3.5배, Cu 2.3배, Mn 2.1배 및 Cr 1.6배가 더 축적되어 있었다. 줄기의 경우, 배경 줄기시료에 비교하여 Pb 10.2배, Cd 5.4배, Zn 4.2배, Wi 1.9배, Cu 1.5 배, Cr 1.3배 높은 것으로 나타났다. 논토양으로부터 뿌리로 흡수되는 중금속 함량은 매우 큰 것으로 나타났으나, 뿌리로부터 줄기로의 체내 흡수도는 급격하게 감소하는 것으로 나타났다.

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A Study on the Absorption Characteristics of Soil Block and Soil Plaster as Eco-Friendly Building Materials (친환경 건축재료로서의 흙벽돌과 흙미장의 흡음 특성에 관한 연구)

  • Hwang, Seong Il;Chu, Mun Ki;Hwang, hey joo;Oh, yang ki
    • KIEAE Journal
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    • v.7 no.3
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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.

A Study on Factors Affecting Changes in Estimating Standards in Plaster Work (미장공사의 품기준 변화 요인에 관한 연구)

  • Oh, Jae-Hoon;An, Bang-Yul
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2019.05a
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    • pp.232-233
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    • 2019
  • The plater work in the standard of estimate presents a variety of construction types. However, there is a part that does not fit the change of specification standards and on-site construction status, and it was revised in 2019's standard of estimate. In this study, we analyzed in detail the factors affecting the changes in estimating standards in the plater work. There were changes in the specification standards previously presented as primary coat, secondary coat, and formal coat as well as changes in on-site construction status such as thickness according to the number of plastering. Therefore, it is analyzed that the estimating standards can be classified by the number of finishes according to the site conditions by reflecting the analysis of the specification standards and site application status, and suggesting the finishing standards according to the number of plastering.

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Effect of the Silica's Size on Physical Properties of Outside Insulation Covering Plaster Mortar (규사의 크기가 외단열 마감용 미장 모르타르의 물성에 미치는 영향)

  • Choi, Su-Young;Ju, Hee-Jeong;Park, Jin-Sang;Oh, Jung-Hwan;Bae, Ki-Sun;Oh, Sang-Kun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2013.11a
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    • pp.175-176
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    • 2013
  • Nowadays, energy-saving has become important in the construction industry. Above all things, outside insulation on buildings is important in measure of energy-saving. However, its insulation performance is degraded by the problem of that Cement-polymer modified waterproof coatings are used mostly for covering plaster mortar. In this study, we examine the optimum size of the silica and how does silica's size effect on physical properties of outside insulation covering plaster mortar.

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A Study on the Basic Properties of Exterior Insulation Plasterer Finishing Materials by Addition of Calcium Carbonate Powder (탄산칼슘계 분말 첨가에 따른 외단열 미장 마감재의 기초물성에 관한 연구)

  • Shin, Joung-Hyeon;Jo, Su-Yeon;Jung, Ui-In;Kim, Bong-Joo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.05a
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    • pp.213-214
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    • 2021
  • External insulation method is used to conserve energy of buildings. However, the current external insulation method uses organic insulating materials to become a diffusion path in case of fire. In this study, the purpose of this study is to provide basic data on the required performance of the plastering material according to the CaCO3 powder addition of the finishing material of the external insulation method. In Figure 1, when powder was added, the adhesion strength decreased by 30% to 35% at 10% and 0% to 50% at 20% compared to Plain. In Figure 2, the moisture permeability increases approximately twice when powder is added. The results for the water absorption coefficient are shown in Figure 3.

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The Characteristics of the Change in dry Contraction Length of Dry Mortar for Each Cosmetic Period using an Improved Durometer (개량형 Durometer를 활용한 미장시기별 Dry Mortar의 건조수축 길이변화 특성)

  • Han, Soo-Hwan;Hyun, Seung-Yong;Hwang, Yin-seung;Yoon, Chi-Whan;Han, Min-Cheol;Han, Cheon-Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.11a
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    • pp.190-191
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    • 2021
  • This study is conducted to provide a method to estimate the setting time and early age compressive strength using D type durometer.Test results indicated that the use of D type Durometer attached with modified needle, which was designed to secure improved accuracy in setting and compressive strength, enables to estimate setting time and the compressive strength at early age.

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Al 예방을 위한 종계장의 차단방역

  • 김윤호
    • Proceedings of the Korea Society of Poultry Science Conference
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    • 2004.05a
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    • pp.51-56
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    • 2004
  • 농장 건설시 사전 위생 계획서 작성 (1) 계사내벽 세척 살균이 용이해야 한다. 천장과 내벽은 갈바륨 철판으로 한다. 계사바닥은 시멘트로 하고 표면을 기계 미장하여 매끄럽게 한다.(중략)

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Desktop Documentary & Database Narrative (데스크톱 다큐멘터리와 데이터베이스 내러티브)

  • Cha, Minchol;Lee, Sanghoon
    • The Journal of the Convergence on Culture Technology
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    • v.4 no.3
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    • pp.75-86
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    • 2018
  • Desktop Documentary is a new documentary mode which uses a screen capture technology to complete the multitasking process of the creator who searches in the Internet Open Archive instead of shooting with a camera and remixes the selected multimedia contents using a computer interface. In this paper, we explore the desktop documentary that transforms potential archives into database narratives in the new media environment, converts cinematic mise-en-$sc{\grave{e}}ne$ into computational mise-en-interface, and transcends the boundaries between creation and criticism through creative mechanism as curation through stream of consciousness. We also examine the concept, type and characteristics of the desktop documentary which emerges since 2010s as an experimental attempt of new media art, a new hybrid genre of mainstream horror film, a new mode of fiction film, a new mockumentary style, and a new form of video essay and audiovisual critique.