• Rapid Communication in Photoscience
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• 제2권1호
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• pp.31-33
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• 2013

The irradiation of electron-beam onto bis-(diphenylphosphino)methane, ethane, propane and butane initiated phenyl-shift from a phosphine to another phosphine atom and subsequent fragmentation resulted in the formation of triphenylphosphine derivative as key intermediate. The mechanism of those processes is speculated.

• 대한수학회보
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• 제44권4호
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• pp.701-708
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• 2007

In this paper we characterize the boundedness, compactness and closedness of the range of the weighted composition operators on Lorentz spaces L(p,q), $1.

• 대한수학회논문집
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• 제15권4호
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• pp.707-714
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• 2000

The authors aim at presenting a presumably new transformation formula involving generalized hypergeometric series by making use of series rearrangement technique which is one of the most effective methods for obtaining generating functions or other identities associated with (especially) the hypergeometric series. They also consider a couple of interesting special cases of their main result.

• Journal of Photoscience
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• 제3권2호
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• pp.61-64
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• 1996

Photoaddition reactions of p-quinones to 1, 4-diphenylbubl-en-3-yne (BEY) have been investigated. Irradiation (300 nm) of BEY and 1, 4-benzoquinones in dichloromethane afforded quinone methides. I rradiation of 1, 4-naphthoquinone and BEY leaded to the formation of unstable spiro oxetene intermediate, followed by the rearrangement to give quinone methide, and finally the oxidative photocyclization. In contrast, irradiation 2, 3-dichloro-1, 4-naphthoquinone (or anthraquinone) and BEY yielded another type of quinone methides in one pot.

• Archives of Pharmacal Research
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• 제13권2호
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• pp.201-203
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• 1990

The efficient synthetic routes to cis-1-ethenyl-2-hydroxymethyl-cyclohexane, an useful synthetic intermediate, have been described. Access to the cis-disubstituted cyclo hexane is gained through the Clasen rearrangment and selective DHP protection of diol respectively.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 추계학술대회 논문집
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• pp.1646-1651
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• 2004

This primary study describes some proposition of restoration and rehabilitation of rail station and station impact area for efficient use. Therefore, I reviewed the functions and roles about rail station and other railway facilities related with urban structures and development, and also analysed the case studies about realignment of rail station, and then, suggested primary management plan of efficient railway installation. This study has some bounds and limits owing to the descriptive reviews but not detailed analyses. Hereafter, I am planning to consider the management plan for efficient railway installation use as coinciding with specific city characteristic and comprehensive plan such as rearrangement of the station.

• 한국CDE학회논문집
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• 제14권3호
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• pp.137-149
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• 2009

For recent years, there has been significant research achievement on the feature-based multiresolution modeling technique along with widely application of three-dimensional feature-based CAD system in the areas of design, analysis, and manufacturing. The research has focused on several topics: topological frameworks for representing multiresolution solid model, criteria for the LOD, generation of valid models after rearrangement of features, and applications. This paper surveys the relevant research on these topics and suggests the future work for dissemination of this technology.

• Bulletin of the Korean Chemical Society
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• 제30권5호
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• pp.1147-1151
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• 2009

The synthetic route of novel 3′-C-methyl carbodine analogue is described. The construction of tertiary alcohol at 3′- position of carbodine analogues was successfully made via sequential [3,3]-sigmatropic rearrangement, ring-closing metathesis (RCM) and stereoselective dihydroxylation reactions starting from ethyl glycolate.

• 한국환경성돌연변이발암원학회:학술대회논문집
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• 한국환경성돌연변이발암원학회 2002년도 Current Trends in Toxicological Sciences
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• pp.82-82
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• 2002

• 한국세라믹학회지
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• 제27권8호
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• pp.1020-1026
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• 1990

The effect of heating rate on the microstructural evolution during sintering of PZT ceramics has been investigated. In case of PZT powder compacts containing excess of PbO, fast heating caused incomplete rearrangement of solid grains in a liquid, resulting in lower density and inhomogeneous pore shape ; on contrary, slow heating resulted in better densification. In contrast, in case of compacts without excess PbO, the densification was enhanced by fast heating due to suppression of the grain growth.