• Journal of the Korean Applied Science and Technology
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• v.12 no.2
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• pp.151-156
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• 1995

The influences of fluorophor, scatterer, absorber in turbid material by light scattering were interpreted for the scattered fluorescence intensity and wavelength, it has been studied the molecular properties by laser induced fluorescence spectroscopy. It has been found that the effects of optical properties in scattering media by the optical parameters(${\mu}_{s}$, ${\mu}_{a}$, ${\mu}_{t}$). The value of scattering coefficient ${\mu}_{s}$ is large by means of the increasing particles of scatterer, it has been found that the slope decays exponentially as a function of distance from laser source to detector. It may also aid in designing the best model for oil chemistry, laser medicine and application of medical engineering.

• Journal of the Korean Applied Science and Technology
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• v.12 no.2
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• pp.145-150
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• 1995

The Kinetics velocity for hydrolysis reaction of vanillylidene imine derivatives has been measured by ultra-violet ray spectrophotometer in 20wt% $dioxane-H_2O$ at $25^{\circ}C$. It was measured the reaction rate Constant of vanillylidene imine derivatives that can be applied widely following to pH-change at $25^{\circ}C$. Final products that hydrolyzed the vanillylidene imine certified in vanillin and aniline derivative, and the effect of substitution radical that has affected on hydrolysis reaction was largely promoted to reaction rate by electron attrating group in acidity and electron donoring group in basic. From the results of rate constant to hydrolysis reaction, substituent radical effect and final products. It has certified the hydrolysis reaction mechanism of vanillylidene imine derivatives.

• Proceedings of the Korea Environmental Mutagen Society Conference
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• 2002.05a
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• pp.108-108
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• 2002

• Journal of Photoscience
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• v.12 no.3
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• pp.135-136
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• 2005

We confirmed that the 1 compound, N,N'-di(p-dimehylaniline)benza1d-1,4-diimine, with two imine bond showed a reversible trans-cis photoisomerization which was recovered to the original state in 8 minutes through the spectroscopic studies.

• Communications of the Korean Mathematical Society
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• v.12 no.1
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• pp.135-144
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• 1997

The purpose of this paper is to find all $K_1$ -minimal ideals of a sandwich semigroup of closed functions.

• Communications of the Korean Mathematical Society
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• v.12 no.4
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• pp.829-839
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• 1997

We study the Betti numbers, the Bass numbers and the resolution of modules under the change of rings. For modules of finite homological dimension, we study the Euler characteristic of them.

• Journal of the Korean Mathematical Society
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• v.12 no.1
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• pp.63-70
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• 1975

• Proceedings of the Optical Society of Korea Conference
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• 2004.07a
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• pp.12-13
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• 2004

• Magazine of the Korea Institute for Structural Maintenance and Inspection
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• v.16 no.1
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• pp.12-18
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• 2012

• Analytical Science and Technology
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• v.12 no.3
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• pp.1027-1046
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• 1999