• Title/Summary/Keyword: Liner Conference

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토양안정제에 의한 폐기물 매립장 차수재의 수리전도도 특성

  • 임은진;이재영;이복일
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2002.09a
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    • pp.390-393
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    • 2002
  • Many researchers have studied for the barrier liner in the landfill that is mixed with clay mineral, native soils and solidified agent. However, they have a littel but problems for safety construction and maintenance as a bottom liner systems in the landfill. In this paper the authors studied the effects on hydraulic conductivity by electric-chemical ion-exchange agent that is a soil stabilization agent(Sulphonated Oil), The application of the soil stabilization agent to meet the hydraulic conductivity of clay liner in landfill is possible if the additive quantity and a proper reaction time is determined relevantly in the laboratory test.

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US/European Shipping Regulatory Development and Its Impact on Liner Shipping Industry (미국과 유럽의 해운산업 규제완화와 그 영향)

  • Yang, Jung-Ho
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.28
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    • pp.39-61
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    • 2005
  • Historically shipping conference has enjoyed antitrust immunity in consideration of the importance of liner service in international trade in that it is essential to ensure stable movement of international freight. However, shipping deregulation which has been carried out for last decades in the US and EU has caused significant changes to the liner shipping market. In fact, most of shipping conferences have broken up or transformed as discussion agreement since shipping regulatory reform. However, on the other hands, it is also true that it has contributed to developmore efficient and responsive negotiating process that are better tailored to the needs of individual shippers.

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Heat calculation in the slotted cooling liner (슬롯형 냉각라이너에서의 열해석)

  • Jeong, Hae-Seung;Hwang, Ki-Young;Yoon, Hyun-Gull
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • 2010.11a
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    • pp.642-647
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    • 2010
  • Film cooling is used to protect thermally the inner wall of combustion chamber exposed to hot gas in air-breathing propulsion system and specially film cooling using slotted cooling liner has been investigated to improve the cooling characteristics for a long time. In this paper results from gas dynamic and heat transfer calculations were presented in the combustion area and cooling area of multi-slotted cooling liner.

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Thermal Characteristics in a Gas Turbine Combustion Liner with Firing Temperature of 1600K (1600K급 가스터빈 연소실에서의 열특성 해석)

  • Yun, Nam-Geon;Kim, Kyung-Min;Jeon, Yun-Heung;Lee, Dong-Hyun;Cho, Hyung-Hee;Kim, Moon-Young
    • Proceedings of the KSME Conference
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    • 2008.11b
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    • pp.2984-2988
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    • 2008
  • Numerical analyses are carried out in order to understand complex thermal characteristics of a gas turbine combustor liner such as combustion gas temperatures, wall temperatures and heat transfer distributions. As results, The maximum internal and external heat transfer is $2218W/m^2K$ and $2358W/m^2K$, respectively. The combustion gas temperatures range is 673K to 1760K. A range of temperature on TBC is 676K to 1382K. Lastly, temperature range on outer surface of combustion liner cooled by compressed air is 676K to 1188K.

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Chemical Compatibility of Solidified Liner Materials (매립장 고화차수재의 화학용액과의 반응특성)

  • 정하익;조진우;임재상;김상길
    • Proceedings of the Korean Geotechical Society Conference
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    • 2002.03a
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    • pp.343-346
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    • 2002
  • The chemical compatibility of leachate with the two natural materials was analyzed by performing the hydraulic conductivity test. The selected liner materials were natural marine clay and weathered soil sampled from Kimpo wastefill and Daehwa Dong, Kyonggi Do, respectively. PARAFIX, which is mainly composed of paraffin, cement, stearic acid, PVA etc., was used as solidifying agent. The chemical solutions used in the test were 10% acetic acid, 10% methanol, and real leachate from Kimpo wastefill and the results of tests were compared with that of distilled water. The results of tests show that hydraulic conductivity of solidified clay was increased slightly with permeation of acetic acid, methanol and the increase of hydraulic conductivity was not shown with permeation of leachate, distilled water and in case of weathered soil. Based on the tests, it is ascertained that the tested liner materials can be stable with the solution of low concentration.

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Manufacture of Water-Resistant Corrugated Board Boxes for Agricultural Products in the Cold Chain System

  • Jo, Jung-Yeon;Min, Choon-Ki;Shin, Jun-Seop
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • 2006.06b
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    • pp.459-463
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    • 2006
  • For the purpose of developing liner board for water-resistant corrugated board in the cold chain system, several types of base paper for corrugated board were purchased from the market and 6 different boards were produced in the paperboard mill by applying the chemicals on the base paper. Then, water-moisture resistant performance and physical properties of the boards were evaluated and compared each other. The liner board which is dried at high temperature with pressure by the Condebelt showed a superior performance in strength over conventional liner boards. Strength of the board increased by surface chemical treatment up to 60% of compressive strength and 30% of bursting strength. Starch insolubilization with Ammonium-Zirconium -Carbonate and surface coating with a surface size and a moisture resistant chemical on CK paper showed the best result. Therefore, this method was recommended to produce the outer liner board for water -resistant corrugated board.

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Evaluation of Physical Properties of Liner and Cover Material Crystalline admixture (결정질혼화제를 함유한 광산차수재 물성평가)

  • Cho, Yong-Kwang;Kim, Jin-Sung;Kim, Chun-Sik;Jo, Sung-Hyun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.05a
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    • pp.227-228
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    • 2021
  • There are various problems caused by environmental pollution around the abandoned mines. In addition, they are exposed to the risk of safety accidents due to sinkholes caused by ground subsidence. Therefore, the ground is stabilized through the filling and construction of abandoned mines using industrial by-products. However, in the case of Backfill Material, secondary pollution caused by acidic drainage and leachate is not suppressed. To solve this problem, the liner and cover material is first installed. Therefore, in this study, the watertightness of the liner and cover material was improved by mixing crystalline admixtures by content.

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