• Proceedings of the Korean Magnestics Society Conference
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• 2017.05a
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• pp.99-100
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• 2017

• Proceedings of the Korean Magnetic Resonance Society Conference
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• 2000.01a
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• pp.44-46
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• 2000

• Analytical Science and Technology
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• v.6 no.2
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• pp.181-195
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• 1993

The purpose of this research is to improve the density and the hardness of the SUS alloys for wear resistant materials. The dependence of the density, shrinkage ratio and hardness of various alloys on the sintering temperature and composition were examined. Alloys added with 3% Ti shows the most proper sintering properties of shrinkage ratio and the hardness which is enough to substitute for existing high price materials.

• Korean Journal of Crystallography
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• v.12 no.1
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• pp.14-19
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• 2001

Effects of electric-field-induced lattice distortion on the polarization and strain were investigated in Pb(Mg/sub 1/3/Nb/sub 2/3)O₃ relaxor ferroelectric ceramics in the temperature range of -50℃∼90℃. The ratio of residual strain and polarization (S/sub r//P/sub r/ rarely depends on the temperature. However, the ratio of the electric field included strain and polarization (S/sub induced//P/sub induced/) increased as the temperature decreases below phase transition temperature. To explain these experimental results, a simple rigid ion model concentrating on only Bo/sub 6/ octahedron was suggested.

• Korean Journal of Acupuncture
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• v.35 no.4
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• pp.210-225
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• 2018

Objective : This research is aimed to compare the three sets of Dongin(K-1, K-2, K-3) to Chosun and Chinese acupuncture bronze men, and through literature review of acupuncture points and meridians to see how acupuncture of Chosun affected the Japan's acupuncture bronze men. Methods : Using 3D scanning, we compared the location of acupoints by the proportional bone measurement method of the three sets of Dongin to those of Chosun and China. We also compared the meridians and acupuncture points of the three sets of Dongin to Doningyosodo. Results : Dongin K-1 and K-2 have all the unique characteristics of ChimGuemDongIn. Their heads were made about 30% larger than the location of points by the proportional bone measurement method and their necks were shortened to get the right proportion. Their gender was not specified. Their hands were sticking forward, and knees were slightly bent, and the arms and legs were carefully crafted to record acupuncture points. Dongin K-1 and K-2 marked the meridians and acupuncture points according to Doningyosodo. In particular, BL39 in Dongin K-1 and K-2 has been marked as in ChimGeumDongIn, which is considered to have come from DongUiBoGam. These characteristics do not exist in Chinese acupuncture bronze men. The location of points by the proportional bone measurement method was marked on the right side of the Dongin K-3, while the eight extra meridians were marked on the left side. Conclusions : In summary, Dongin K-1 and K-2 indicate the Japanese history of acupuncture which may have influenced from Chosun.

• Journal of Haehwa Medicine
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• v.17 no.1
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• pp.129-136
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• 2008

This study was performed to investigate the cause, symptom, treatment of carpal tunnel syndrome through Western medicine and Dong-Eui-Bo-Kham(東醫寶鑑). Results & conclusions 1. Carpal tunnel syndrome is a common peripheral nerve entrapment syndrome that is characterixed by pain, numbness, sensory disturbance along the dsitribution of the meridian nerve in hand 2. Treatment of carpal tunnel syndrome have included wrist immobilization, anti-inflammatory drug, local injection of steroid, nerve block and surgical decompression. 3. Carpal tunnel syndrome seems to be similar with numbness(痺證). The causes were usually pathogenic Wind, Cold, Dampness. 4．Acupuncture, herbal medicine, herbal acupuncture were used for treatment of carpal tunnel syndrome. We considered that more study to find various and effective methods oriental medicine for carpal tunnel syndrome should be made.

• Proceedings of the Korean Society of Life Science Conference
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• 2007.10a
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• pp.114.1-114.1
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• 2007

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• Journal of Environmental Health Sciences
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• v.26 no.4
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• pp.105-109
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• 2000

The purpose of this study is to investigate on the water quality of the upper region of Wonchun stream located in Suwon city by chemical analysis and EROD-microbioassay methods using rat hepatoma cell line H4IIE. The water samples were collected at 6 sampling sites from sept. to Nov. 1999 and determined the quantitative toxic effects. Higher levels of BO $D_{5}$, CO $D_{Cr}$ and CO $D_{Mn}$ were determined at M6 site where the influent contains domestic and industrial wastewater. EROD activity of water samples was ranged from 3.43$\pm$0.08 to 9.05$\pm$0.10 pmol/mg protein/min. High correlation with EROD activities and COD values was observed. From the results, the upper region of Wonchun stream water area was presumed to be highly polluted with various persistent organic chemicals.s.

• Journal of Electrochemical Science and Technology
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• v.10 no.3
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• pp.294-301
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• 2019

The quasi-solid-state hybrid electrolytes were synthesized by chemical cross-linking reaction of methacrylate-functionalized $SiO_2$ ($MA-SiO_2$) and tetra (ethylene glycol) diacrylate in aqueous electrolyte. A quasi-solid-state electrolyte synthesized by 6 wt.% $MA-SiO_2$ exhibited a high ionic conductivity of $177mS\;cm^{-1}$ at room temperature. The electrochemical $H_2$ sensor assembled with quasi-solid-state electrolyte showed relatively fast response and high sensitivity for hydrogen gas at ambient temperature, and exhibited better durability and stability than the liquid electrolyte-based sensor. The simple construction of the sensor and its sensing characteristics make the quasi-solid-state hydrogen sensor promising for practical application.

• Proceedings of the Korea Association of Crystal Growth Conference
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• 1998.06a
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• pp.111-114
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• 1998

Lithium Niobate {{{{ { LiNbO}_{ 3} }}}} single crystals grown by Czichralski method at the congruent composition, have ferroelectric microdomains. These microdomins were investigated by chemical etching with hydrofluoric acid (HF) AND NITRIC ACID ({{{{ { HNO}_{3 } }}}}), and by us ing optical microscopy, scanning electron microscopy and atomic force microscopy