• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2005.11a
• /
• pp.213-213
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• 2005

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2009.05a
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• pp.198-198
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• 2009

• Proceedings of the Korean Society of Embryo Transfer Conference
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• 2006.10a
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• pp.34-35
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• 2006

• 대한예방의학회:학술대회논문집
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• 2004.10a
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• pp.78.2-79
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• 2004

• 대한예방의학회:학술대회논문집
• /
• 2004.10a
• /
• pp.29.2-30
• /
• 2004

• 대한두경부종양학회:학술대회논문집
• /
• 2003.11a
• /
• pp.227-227
• /
• 2003

• Proceedings of the Korean Institute of Surface Engineering Conference
• /
• 2015.11a
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• pp.281-281
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• 2015

PCB(printed circuit board) 제조 공정이 복잡해지고 부품의 고집적화로 Chip, ICD 등 부품 및 가공 크기가 작아져 Open Fail, short 등 다양한 불량이 나타난다. 본 연구에서는 이러한 불량의 원인을 규명하고 해결하기 위하여, 전자현미경을 이용하여 불량 PCB 분석을 진행 하였다.

• 연구논문집
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• s.28
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• pp.137-143
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• 1998

In the case of a boiler, scale is made in the tube by the chemical reactions of Ca and Mg ions contained in the water, and heat transfer rate is reduced because of increasement of heat resistance in the pipe of the heat flow. Thus it brings to reduce the energy efficiency and to make environmental pollution by the use of chemicals for the prevention and removement of scale. In this paper, we discussed the design of electronic generator for dual ultrasonic transmitters and analyzed the effect of scale prevention by ultrasound.

• Korea Information Processing Society Review
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• v.15 no.2
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• pp.113-122
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• 2008

• 대한생식의학회:학술대회논문집
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• 2001.06a
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• pp.77-78
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• 2001