• Journal of the Korean Chemical Society
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• v.56 no.1
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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.

• Proceedings of the KIEE Conference
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• 1988.07a
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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.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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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.

• Proceedings of the KIPE Conference
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• 2007.07a
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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.

• JOURNAL OF ELECTRICAL WORLD
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• no.2 s.86
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• pp.16-21
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• 1984

• Fashion Information and Technology
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• v.11
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• pp.11-19
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• 2014

• Proceedings of the Korean Ceranic Society Conference
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• 1986.12a
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• pp.66-81
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• 1986

• Fashion Information and Technology
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• v.7
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• pp.22-26
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• 2010

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2010.03a
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• pp.94-95
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• 2010

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2005.09a
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• pp.66-75
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• 2005