통합 검색 | Korea Science

Prasanna, T.S.R.;Raju, K. Mohana
- 대한화학회지
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- 제56권1호
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- pp.74-77
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- 2012
A new catalytic system has been developed in the synthesis of bis(indolyl)methanes using cyclic phosphonic acid anhydride(T3P). Short reaction time, simplicity of isolation, safe catalyst and high yields of product are the features.
https://doi.org/10.5012/jkcs.2012.56.1.074 인용 PDF KSCI KPUBS HTML

윤병도;김민회;정재윤
- 대한전기학회:학술대회논문집
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- 대한전기학회 1988년도 전기.전자공학 학술대회 논문집
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- pp.98-101
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- 1988
The purpose of the paper is to operate a high-dynamic-performance for ac servo system. It is describes a characteristics and stability regions by linearized control system of squarriel-cage induction motor. Designed control system are compose to slip-frequency vector control for controlled a scandary interlinked flux by PWM inverter.
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Hong, Won-Eui;Lee, Joo-Yeol;Kim, Bo-Kyung;Ro, Jae-Sang
- 한국정보디스플레이학회:학술대회논문집
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- 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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- pp.459-462
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- 2007
An electric field was applied to a conductive layer to induce Joule heating in order to carry out the crystallization of amorphous silicon. Polycrystalline silicon was produced through a solid state transformation within the range of a millisecond. Uniformly distributed grains were obtained due to enormously high heating rate.
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천광수;김학진
- 전력전자학회:학술대회논문집
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- 전력전자학회 2007년도 하계학술대회 논문집
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- pp.343-346
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- 2007
Recently, many nations have released standard such as EN61000-3-2 to impose a limit on the harmonic current to prevent distortion of AC line and to save energy. Also, the limit on the harmonic current makes use of a trade barrier. Therefore, Power factor correction must have been suitable for a limit on the harmonic current. This paper presents AC servo motor drive to have merits of high power factor for Desk-Top Robot.
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