• Title/Summary/Keyword: Tae-bo

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Microwave Dielectric Properties of CaZr(BO3)2 Ceramics (CaZr(BO3)2 세라믹스의 마이크로웨이브 유전특성)

  • Nam, Myung-Hwa;Kim, Hyo-Tae;Kim, Jong-Hee;Nahm, Sahn
    • Journal of the Korean Ceramic Society
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    • v.44 no.5 s.300
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    • pp.173-178
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    • 2007

  • The microstructure and microwave dielectric properties of dolomite type borates, $CaZr(BO_3)_2$ ceramics prepared by conventional mixed oxide method were explored. The sintering temperature of $CaZr(BO_3)_2$ ceramics could be reduced from $1150^{\circ}C\;to\;925^{\circ}C$ with little amount of sintering additives. Microwave dielectric properties of 3 wt% $Bi_2O_3-CuO$ added $CaZr(BO_3)_2$ ceramics sintered at $925^{\circ}C$ were $K{\approx}10.4,\;Q{\times}f{\approx}80,000GHz\;and\;TCF{\approx}+2ppm/^{\circ}C$. Thus obtained LTCC tape was co-fired with Ag paste for compatibility test and revealed no sign of Ag reaction with the ceramics. Therefore, $CaZr(BO_3)_2$ ceramics is considered as a possible candidate material for low temperature co-fired multilayer devices.

  • https://doi.org/10.4191/KCERS.2007.44.5.173 인용 PDF KSCI

Study on Prescription and Formation of SoAEuiBang and DongEuiBoGam (소아의방(小兒醫方)과 동의보감(東醫寶鑑)의 편제와 처방에 대한 연구)

  • Kim, Cho-Young;Chang, Gyu-Tae
    • The Journal of Pediatrics of Korean Medicine
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    • v.24 no.1
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    • pp.65-76
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    • 2010

  • Objectives In the later period of Choseon dynasty, korean pediatrics became a pivot part of medicine. SoAUiBang was the most important book in that era. DongEuiBoGam was the most widely read of all oriental medicine books and published in early days of the Choseon dynasty. Therefore, this comparative study on the prescription and formation of SoAUiBang and DongEuiBoGam could be a useful way to understand SoAUiBang's characteristics. Methods This study was based on SoAUiBang and DongEuiBoGam, two literatures of oriental medicine. Results 1. Formation of SoAUiBang had a similar aspect with that of DongEuiBoGam's and enlarged the area of pediatrics by featuring general medical books. However, its formation did not follow the DongEuiBoGam's, but had its unique formation. It tried to include all diseases of pediatrics in the system of DongEuiBoGam. Plus, smallpox and measles belonged to the epidemic diseases were excluded from the area of pediatrics. 2. Comparing SoAUiBang's prescription of some important diseases with DongEuiBoGam's, it was almost a prescription based on DongEuiBoGam's prescription. However, adjustment of herbs and dosages could not be found in any oriental medicine books including DongEuiBoGam. Conclusions SoAUiBang maintained the traditional Oriental medicine based on author's scholarly creativeness. In addition, it also inherited the lineage of medicine in Korea along with the pedigree of DongEuiBoGam. Therefore, SoAUiBang should be re-evaluated as a medicine book that opened a new field of pediatric and had great academic values.

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