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Development of Crosslinked Cational Starches and Evaluation of Their Performance in the Microparticle Retention System

  • Kim, Tae-Young;Lee, Hak-Lae
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.31 no.5
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    • pp.24-30
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    • 1999
  • Crosslinked corn starches were prepared to increase their molecular weights and their performance as a component of Compozil system was evaluated and compared with that of potato starches. It was shown that greater improvements in retention and strength properties could be achieved when crosslinded cationic corn starches rather than conventional cationic potato starches were used especially at high conductivity because of their molecular rigidity.

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A Study on the Electronic Development for Fluorescent Lamp (형광등용 전자식 점등기 개발에 관한 연구)

  • Park, Jin-Hyung;Sea, Jin-Yun;Jang, Yong-Hae;Sin, Sea-Yun;Baek, Hyung-Lae;Go, Geum-Bea
    • Proceedings of the KIEE Conference
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    • 2003.04a
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    • pp.300-302
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    • 2003
  • Fluorescent lamp converts electrical energy Into light energy. Generally we use both electronic ballast and glow starter method in the house. We developed 40W electronic starter and its characteristic is verified by experiments. The efficiency of ballast is improved by using the LC Parallel reasonance circuit at input stage and LC series reasonance circuit at out-put stage.

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A Control Algorithm for Wafer Edge Exposure Process

  • Park, Hong-Lae;Joon Lyou
    • 제어로봇시스템학회:학술대회논문집
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    • 2002.10a
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    • pp.55.4-55
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    • 2002
  • In the semiconductor fabrication, particle contamination is wide-spread and one of major causes to yield loss. Extensive testing has revealed that even careful handling of wafers during processing may cause photo-resist materials to flake off wafer edges. So, to remove the photo-resist at the outer 5mm of wafers, UV(Ultraviolet) rays are exposed. WEE (Wafer Edge Exposure) process station is the system that exposes the wafer edge as prespecified by controlling the positioning mechanism and maintaining the light intensity level In this work, WEE process station has been designed so as to significantly lower the amount of particle contamination which occurs even during the most r...

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A Study on Bidding Strategy Model of Combined Cycle Plants in Korean Electricity Market (우리나라 전력시장에서 복합화력 발전의 입찰전략 수립 모형 연구)

  • Kim, Sang-Hoon;Lee, Kwang-Ho;Jeong, Lae-Hyuk
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.550-551
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    • 2008
  • 복합화력발전은 여러 가지 장점으로 오늘날 많이 사용되는 발전방식이며, 가스터빈과 스팀터빈의 결합으로 여러 운전 Mode를 갖는다. 본 연구에서는 이러한 특성을 고려하여 복합화력 발전사와 시장운영자와의 관계를 분석하고, 복합화력발전사가 운전 Mode 선택을 전략변수로 사용하는 입찰전략 수립 모형을 제시한다.

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