• Proceedings of the Korean Environmental Sciences Society Conference
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• 2018.10a
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• pp.170-170
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• 2018

• 전기의세계
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• v.65 no.9
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• pp.16-26
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• 2016

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2015.10a
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• pp.523-524
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• 2015

• Water for future
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• v.52 no.6
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• pp.22-26
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• 2019

• The Korean Journal of Food And Nutrition
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• v.12 no.2
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• pp.191-191
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• 1999

A Purge & Trap Concentrator was used to analyze various volatile organic compounds(VOCs) in wat-er. The object of this study was to observe the purge efficiency of 40 VOCs in water according to the change of parameters (purge time drypurge time sample temperature) and to determine the optimum condition for VOCs using the purge & Trap concentrator interfaced with a narrow capillary connected to a gas chromatography/mass spectrometry. The optimum condition of purge and trap is as follows: purge time at 11min drypurge time at 5min sample temperature at 6$0^{\circ}C$ at constant purge flow (40mol/min) constant desorption flow(20ml/min) desorption temperature(2$25^{\circ}C$) and desorption time (1min) At this analytical condition the detection limits of VOCs was in the range of 0.1~0.5$\mu$g/ml and the purge efficiency of each compound was over 70%.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1996.04a
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• pp.242-242
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• 1996

The influence of glucocorticoids on the secretory responses of catecholamines (CA) evoked by acetylcholine (ACh), DMPP, McN-A-343, excess K$\^$+/ and Bay-K-8644 from the isolated perfused rat adrenal gland and to clarify the mechanism of its action. The perfusion of the synthetic glucocorticoid dexamethasone (10-100 uM) into an adrenal vein for 20min produced relatively a dose-dependent inhibition in CA secretion evoked by ACh (5.32mM), excess K$\^$+/ (56mM), DMPP (a selective nicotinic receptor agonist, 100uM for 2min), McN-A-343 (a muscarinic receptor agonist, 100uM for 4min), Bay-K-8644 (a calcium channel activator, 10 uM for 4min) and cyclopiazonic acid (a releaser of intracellular Ca$\^$2+/, 10uM for 4min).

• The Korean Journal of Food And Nutrition
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• v.11 no.6
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• pp.662-666
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• 1998

The effects of 0.5∼1.0% acetic acid, 0.5% laurice acid, or 0.5% monolaurine against Vibrio cholerae non 01 in flatfish strips stored at 15$^{\circ}C$ were assessed. Control strips were dipped in diatilled water only for 3 min. All treatments significantly (P<0.05) reduced the levels of V. cholerae at initial day. The counts of V. cholerae in flatifish treated with either lauric acid or monolurine were a significantly different (P<0.05) from those of acetic acid treatment after 2 days of storage. The counts of V. cholerae in treatments of 0.5% laurice acid after dipping in 1.0% acetic acid for 3 min were lower than those of treatments with 0.5% luarice acid for 3 min after dipping in 0.5% acetic acid for 3 min. Treatments with 0.5% monolurine for 3 min were not effective in lowering (P<0.05) the counts of V. cholerae after 3 days compared to the control.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 1995.11a
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• pp.97-101
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• 1995

GaN films were prepared on Si(111) substrates by hydride vapor phase epitaxy (HVPE) on HCl-NH$_3$-N$_2$gas system. Effects of HCl gas flow rate on the film investigate under deposition conditions of flow time of 10min, 20min, 30min. The deposition rate increased with increasing HCl gas flow rate in the range of 10cc/min to 40cc/min and deposition time. Strung (00.2) oriented GaN film was obtained at a lower HCl flow rate and improved of the surface morphology.

• Journal of the Korean Institute of Intelligent Systems
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• v.14 no.6
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• pp.776-782
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• 2004

Generally, Max-Min CRI (Compositional Rule of Inference ) method by Zadeh and Mamdani is used in the conventional fuzzy inference. However, owing to the problems of Max-Min CRI method, the inference often results in significant error regions specifying the difference between the desired outputs and the inferred outputs. In this paper, I propose a New Max-Min CRI method which can solve some problems of the conventional Max-Min CRI method. And then this method is simulated in a D.C.series motor, which is a bench marking system in control systems, and showed that the new method performs better than the other fuzzy inference methods.

• 한국생물공학회:학술대회논문집
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• 2002.04a
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• pp.489-492
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• 2002

We have performed batch chromatography experiments to calculate parameters which are used to design SMB chromatography system. Isotherms of S- and R-ketoprofen enantiomers were gained from small amount loading experiments in a column, and flow rate of four zones of SMB chromatography were calculated using mass balance equations. As a results, diameter and length of columns were 10mm and 600mm, and flow rate of each zone were as follows; $Q_{Feed}$=1.00ml/min ,$Q_{Elu}$=2.81ml/min ,$Q_{Raf}$=1.81ml/min ,$Q_{Ext}$=2.00ml/min , and $Q_{Rec}^{TMB}$=10.75ml/min , From the Darcy's equation, the pressure drop in whole columns of SMB chromatography was 128bar.