• Title/Summary/Keyword: finishing

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Development of New Hybrid Technique of Protective Finishing for the Prevention of Deterioration in Concrete Structures (콘크리트 구조물의 열화방지를 위한 보호마감 복합화 신기술의 개발)

  • 하기주;최민권;신종학;김기태;홍호용;이영범
    • Proceedings of the Korea Concrete Institute Conference
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    • 2001.05a
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    • pp.739-744
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    • 2001
  • In this study, experimental research was carried out to develop protective finishing, coating materials and new hybrid technique for deteriorating prevention and high durability in concrete structures. It had sufficiently recommended performance for the protective finishing method of concrete structures through testings. This is more progressive double membrane method than single membrane type designed by conventional method. It was found that this hybrid construction method had very excellent performance to improve the durability of existing concrete structures and attain the beauty of concrete structures.

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Development for Finishing Method of Concrete Structures Applying Metal Spraying System (금속용사 시스템을 이용한 콘크리트 구조물의 마감공법 개발)

  • 이한승
    • Proceedings of the Korea Concrete Institute Conference
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    • 2001.11a
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    • pp.1225-1228
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    • 2001
  • The purpose of this study is to develop for finishing method of concrete structures applying metal spraying system. In the experiments, the pull out tests were conducted using the specimen which was applied by various surface treatment of concrete substrate. As a result, it was confirmed that the adhesion strength of metal spray was effected by surface condition of concrete and the construction of primer or the coarse surface agent to the concrete substrate is very effective to the new finishing method of concrete for the metal spraying system.

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Implementation of Sequence Finishing Program for Efficient Sequence Analysis (효율적인 서열 분석을 위한 sequence finishing program의 구현)

  • Moon, Sang-Hoon;Jung, Woo-Cheol;Kim, Jin
    • Proceedings of the Korea Information Processing Society Conference
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    • 2003.05b
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    • pp.927-930
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    • 2003
  • Automated sequencer로부터 얻게된 서열은 PCR이나 sequencing의 영향 등으로 기존의 자료 또는 분자생물학자가 원하는 서열과는 조금씩 차이점을 나타내게 되고, 이를 보정하기 위해 수작업으로 처리하게 된다. 이는 아주 간단함 작업임에도 불구하고 30분에서 1시간, 많게는 몇 시간씩 걸리는 불편함을 감수하고 있다. 본 논문에서는 분자 생물학자들이 효율적으로 서열을 분석하게 하는 sequence finishing program의 구현에 관하여 논의하였다.

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Flame Retardant Finishing for Nylon Fabric with Phosphate Compound (인 화합물에 의한 나일론 직물의 방염가공)

  • 김수창
    • Textile Coloration and Finishing
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    • v.10 no.4
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    • pp.30-36
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    • 1998
  • The need for the effective flame retardant finishing for synthetic fiber Is required. This paper is focussed on the analysis of physical properties of nylon 6 fabric treated with tris(2-chloroethyl) phosphate(TCEP) in comparision with the untreated fabric. In order to evaluate the flame retardance effect, limiting oxygen index and burn rate were determined. Above 20% add-on of TCEP on nylon 6 fabric, reasonable flame retardancy was observed. Thermal stability of the treated nylon 6 fabric was evaluated by TGA. It seems that TCEP acts via a condensed phase mechanism. Tenacity and moisture regain of the treated fabrics were not changed and washfastness of those was excellent.

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Improvement of Serviceability of Waterproof and Moisture-permeable Nylon Fabric (투습방수 나일론 직물의 기능성 부여가공에 관한 연구)

  • 김성동;김삼수
    • Textile Coloration and Finishing
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    • v.7 no.1
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    • pp.23-31
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    • 1995
  • Changes of the properties of waterproof and moisture-permeable nylon fabric were investigated when softener, anti-static agents, anti-biosis agents were added to the polyurethane resin solution, and when they were applied after resin coating. The adding method of finishing agents into polyurethane layer resulted in an increase in water permeability but a severe decrease in peeling strength. It was found that the desired functionality such as softness, anti-staticity, anti-biosis were successfully introduced into waterproof and moisture-permeable nylon fabric by after-treatment of finishing agents.

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Syntheses of Infrared Absorbing Nickel Complex Dyes (적외흡수 니켈 착체색소의 합성)

  • Kim, Sung-Hoon;Lim, Yong-Jin
    • Textile Coloration and Finishing
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    • v.3 no.3
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    • pp.29-33
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    • 1991
  • Some ir absorbing nickel complex dyes were synthesized by the reaction of phenylene diamines, 2-aminobenzenethiols and 2-aminobenzene selenols, tetrathiols with nickel (II) chloride. These dyes absorbed ir light, but those from phenylene diamines absorbed at 780-800 nm which is the most favorable wavelength region for semiconductor laser optical recording dye medium.

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Study on the Characteristics of Precision Electrochemical Polishing by Using Lorentz's Principle (로렌츠원리에 의한 초정밀 전해연마 특성에 관한 연구)

  • 김정두
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 1995.10a
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    • pp.82-85
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    • 1995
  • Magnetic-electrolytic-abrasive polishign(MEAP) systemwas newly developed and the finishing characteristics of Cr-coated roller was analyzed. The paper describes the operational principle of MEAP system and magnetic field effect on the MEAP process by experimental results. The finishing characteristics and optimal finishing condition for Cr-coated roller were experimented and analyzed.

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Automatic Tetrahedral Mesh Generation using 3-D Operators (3-D 오퍼레이터를 이용한 사면체 요소망의 자동 생성)

  • 권기연;채수원;이병채
    • Korean Journal of Computational Design and Engineering
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    • v.9 no.1
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    • pp.27-34
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    • 2004
  • A tetrahedral mesh generation scheme using 3-D operators has been presented. The proposed scheme employs new 3-D operators such as rearranging and modified finishing operators in addition to the previous trimming, wedging, digging, splitting and finishing operators. These new operators have been introduced in order to increase the stability of mesh generation process. Check processings with surrounded element edges and faces have also been optimized by employing a searching algorithm. Sample meshes are constructed to demonstrate the mesh generating capability of the proposed algorithm.

Tension Control System for Hot Strip Mills (열간 압연 공정에서의 장력 제어시스템)

  • 박성한;안병준;황이철;홍신표;이만형
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.169-169
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    • 2000
  • The modeling for the looper of a hot strip finishing mill to control the tension of the strip is presented. The looper is an arm pushing against the strip between stands in a tandem mill to keep the strip tension constant and to isolate the interactions of the adjacent stands. Tension is influenced by the difference in mass flow through the up stream and down-stream rolling stands. Tension is critical to strip quality, influencing width, gauge, and shape. This paper presents how looper angle and strip tension are controlled for a hot strip finishing mill.

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