• Title/Summary/Keyword: Substitute

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On the Restrictions of BMO

  • Kang, Hyeon-Bae;Seo, Jin-Keun;Shim, Yong-Sun
    • Journal of the Korean Mathematical Society
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    • v.31 no.4
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    • pp.703-707
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    • 1994
  • Since John and Nirenberg introduced the BMO in early 1960 [JN], it has been one of the most significant function spaces. The significance of BMO lies in the fact that BMO is a limiting space of $L^p (p \longrightarrow \infty)$, or a proper substitute of $L^\infty$. A dual statement of this would be that the Hardy space $H^1$ is a proper substitute of $L^1$.

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Preliminary Study for Optimum Mix Design of Concrete Incorporating Waste Foundry Sand (폐주물사를 혼입한 콘크리트의 최적배합설계를 위한 기초적 연구)

  • Park, Je-Seon;Kim, Tae-Kyung
    • Journal of Industrial Technology
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    • v.16
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    • pp.25-30
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    • 1996
  • The waste foundry sand might be recycled in concrete, resulting in energy saving and environmental protection. An half Factorial Experiments were performed with the variables of W/C ratio, S/A, Sand/Waste foundry sand ratio and Slump as a preliminary study for optimum mix design of concrete. The results show that then W/C ratio is the most important factor to the concrete strength. The substitute of waste foundry sand up to 30% has little influence, saying that it can substitute the fine aggregate without damaging the concrete properties.

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Preliminary Study for Optimum Mix Design of Concrete Incorporating Waste Basalt (현무암을 혼입한 콘크리트의 최적배합설계를 위한 기초적 연구)

  • Jung, Young-Hwa;Kim, Tae-Kyung
    • Journal of Industrial Technology
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    • v.16
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    • pp.39-44
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    • 1996
  • The waste basalt might be recycled in concrete, resulting in energy saving and environmental protection. An half Factorial Experiments were performed with the variables of W/C ratio, S/A, Crushed stone/Basalt ratio and Slump as a preliminary study for optimum mix design of concrete. The results show that the W/C ratio is the most important factor to the concrete strength. The substitute of waste basalt up to 100% has little influence, saying that it can substitute the coarse aggregate without damaging the concrete properties.

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Technical Development using High Strength Steel of mP Type on Automobile Parts (TRIP형 고장력강판의 부품적용 기술개발)

  • 류성지;이상제;이규현;이문용
    • Journal of Welding and Joining
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    • v.20 no.3
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    • pp.46-53
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    • 2002
  • The expolitation of substitute material and new manufacturing technology of the automobile body panel for next generation cars have been steadily professed by advanced automobile companies. High strength steel of TRIP (Transformation of Induced Plasticity) type is developed in response to demands about crash safety and high strength of automobile. In this study, basic technologies can fix up problems occurring on the mass production and applied to the other forming methods will be prepared through rasping a property of TRIP material.

Preliminary Study for Optimum Mix Design of Concrete Incorporation Waste Foundary Sand (폐주물사를 혼입한 콘크리트의 최적 배합설계를 위한 기초적 연구)

  • 백민경;이주형;김태경;윤경구;박제선
    • Proceedings of the Korea Concrete Institute Conference
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    • 1996.10a
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    • pp.58-63
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    • 1996
  • The waste foundry sand might be recycled in concrete, resulting in energy saving and environmental protection. An half Factorial Exprements were performed with the variables of W/C ratio, S/A, Sand/Waste foundry sand ratio and Slump as a preliminary study for optimum mix design of concrete. The results show that the W/C ratio is the most important factor to the concrete strength. The substitute of waste foundry sand up to 30% has little influence, saying that it can substitute the fine aggregate without damaging the concrete properties.

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Biodegradable Inorganic-Organic Composite Artiticial Bone Substitue -Part2. Collagen purification and its physical and biological properties-

  • Hwal Suh
    • Journal of Biomedical Engineering Research
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    • v.15 no.3
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    • pp.341-346
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    • 1994
  • To develop an artificial bone substitute that is gradually degraded and replaced by the regenerated natural bone, the authors designed a composite that is consisted of calcium phosphate and collagen. To use as the structural matrix of the composite, collagen was purified from human umbilical cord. The obtained collagen was treated by pepsin to remove telopeptides, and finally, the immune-free atel- ocollagen was produced. The cross linked atelocollagen was highly resistant to the collagenase induced collagenolysis. The cross linked collagen demonstrated an improved tensile strength.

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Analysis of the Decision Making of Landlord in Cubical Substitute Lot (입체환지시 토지 소유자의 의사결정에 대한 수리적 해석 - 도시설계 및 개발의 관점으로 -)

  • Lee, Won-Young;Choi, Chang-Gyu
    • The Journal of the Korea Contents Association
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    • v.9 no.2
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    • pp.439-445
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    • 2009
  • This study has tries to define the structure of cubical substitute lot development and develope the logical tool for GIS(Geographic Information System). The research has found such important variables as the gap of land price, FARIfloor area ratio), LBR(land burden ratio) and etc. Among those variables, current land price and increasing rate of the price could not be controled by the developer and governments. LBR and FAR, however, could be negotiated and regulated by those shareholders. The result could define the control variables in cubical substitute lot which should be included in the future system for the development tool. The outcome could give the objective ground for local governments, landlords, and engineering companies which involve the cubical subsititute lot.