• Analytical Science and Technology
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• v.17 no.4
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• pp.302-307
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• 2004

Determination of actinides in the environmental sample requires separation of each element. This procedure is tedious and time consuming. And also, the detection limits of some nuclides using alpha spectrometry are rather higher. To overcome the lower detection limit and complicated separation procedure, a simple analytical technique for the determination of actinide isotopes in the environmental samples was developed and applied to IAEA and NIST reference sediment samples. For the separation of actinides from matrix, anion exchange resin and TRU-spec extraction chromatography resin were used and chemical yields were obtained using natural uranium, thorium, $^{242}Pu$ and $^{243}Am$ tracers. For overcoming the higher detection limits of U and Th in alpha spectrometry, neutron activation analysis was applied. Using combined method, the detection limit was increased about 10 times. The activity values of each isotope were consistent with the reference values reported by IAEA and NIST.

• 한국문화재보존과학회:학술대회논문집
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• 2006.11a
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• pp.73-80
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• 2006

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2005.11a
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• pp.273-274
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• 2005

• 대한방사선방어학회:학술대회논문집
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• 2011.11a
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• pp.126-127
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• 2011

• Proceedings of the Korean Nuclear Society Conference
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• 1999.05a
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• pp.295-296
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• 1999

• The Magazine of the IEIE
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• v.21 no.8
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• pp.30-38
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• 1994

본고에서는 TFT LCD의 중요한 issue가 되고 있는 대형화와 full color 실현을 위해 저반사화 기술, 고개구율화 기술, 광시야각 기술 및 back light unit, color filter, 구동 IC등의 주요 핵심 부품 기술등의 최근 기술 동향 및 향후 나아갈 방향에 대하여 살펴보았다.

• The Korean Publising Journal, Monthly
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• s.231
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• pp.11-11
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• 1998

최근 새로운 시각과 주제별로 접근한 역사서 출간이 활발하다. 상업발달사, 국경획정연구, 당쟁과 사화, 전쟁과 반란 등 단일한 주제를 깊이 다룬 책들이 한 시대의 역사를 조명하고 있다. 특히 전쟁의 역사를 살핀 책들은 변혁사를 통해 새로운 정치구조에 대한 역학구조를 다뤄 흥미롭다.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2016.10a
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• pp.421-422
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• 2016

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2003.10a
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• pp.146-151
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• 2003

Reduced Activation Ferritic/Martenstic (RAFs) are leading candidates for structural materials of D-T fusion reactor. One of The RAFs, JLF-1 (9Cr-2W-V, Ta) has been developed and proved to have good resistance against high-fluency neutrino irradiation and good phase stability. Recently, in order to clarify the strengthening mechanical at high temperature, a new scheme to improve high temperature mechanical properties is desired. Therefore, the creep properties and creep life prediction by Larson-Miller Parameter method for JLF-1 to be used for fusion reactor materials or other high temperature components were presented at the elevated temperatures of $500^{\circ}C$, $550^{\circ}C$, $600^{\circ}C$, $650^{\circ}C$ and $704^{\circ}C$. It was confirmed experimentally and quantitatively that a creep life predictive e벼ation at such various high temperatures was well derived by LMP.

• Journal of Ocean Engineering and Technology
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• v.18 no.2
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• pp.58-63
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• 2004

Reduced Activation Ferritic/Martensitic Steels (RAFs) are leading candidntes for structural materials of a D-T fusion reactor. One of the RAFs, JLF-l (9Cr-2W-V, Ta) has been developed and has shown to have good resistance against high-fluency neutrino irradiation and good phase stability. Recently, in order to clarify the strengthening mechanisms at high temperatures, a new scheme to improve high temperature mechanical properties is desired. Therefore, the test technique development of high temperature creep behaviors for this material is very important. In this paper, the creep properties and creep life prediction, using the Larson-Miler parameter method for JLF-l to be used for fusion reactor materials or other high temperature components, are presented at the elevated temperatures of 50$0^{\circ}C$, 55$0^{\circ}C$, $600^{\circ}C$, $650^{\circ}C$ and 704$^{\circ}C$. It was confirmed, experimentally and quantitatively, that a creep life predictive equation, at such various high temperatures, is well derived mr the LMP method.