• Title/Summary/Keyword: yang-tai

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Second Harmonic Conversion of Nd:YAG Laser using $KH_2PO_4(KDP)$ Crystal ($KH_2PO_4(KDP)$ 결정을 이용한 Nd:YAG 레이저의 제3고조파 변환)

  • Chang, Yong-Moo;Kim, Byung-Tai;Kang, Hyung-Boo
    • Proceedings of the KIEE Conference
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    • 1989.07a
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    • pp.633-636
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    • 1989
  • The simulation results of the third harmonic conversion with 1.064 um Nd :YAG laser using polarization mismatch method are reported. The third harmonic conversion efficiency was over 65% for the Gaussian incident pulse of $300{\sim}400MW/cm^2$ peak intensity, and over 80% for $3{\sim}4GW/cm^2$ peak intensity pulse. The dependence of the third harmonic conversion efficiency' on the variation of incident polarization angle ${\theta}_p$ and angular discrepancy ${\Delta}{\theta}$ of phase matched angle ${\theta}_m$ is discussed.

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The Characteristics of Circulation in the Coastal Area of Jeju Harbor Using the Three Dimensional Ocean Circulation Model (3차원 해수유동모델에 의한 제주항 연안해역의 해수순환 특성)

  • Yang, Tai-Hoek;Yang, Sung-Kee
    • Journal of Environmental Science International
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    • v.20 no.6
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    • pp.679-686
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    • 2011
  • The characteristics of circulation in the coastal area of Jeju Harbor in Korea was examined using the Princeton Ocean Model(POM) with a sigma coordinate system. The result of numerical analysis well corresponded to the observed current data. The velocity at offshore was stronger compared to coastal area during the both period of in maximum flood and maximum ebb of spring tide. According to mean wind velocity, the tidal velocity at the shallow area of Jocheon was slightly increasing during maximum ebb. The effect of wind on the circulation was stronger in shallow area and showed rapid change with depth.

An historic study on the school that attached importance to moxibustion (주중구법파(注重灸法派)에 관(關)한 역사적(歷史的) 고찰(考察)("불론허실한열(不論虛實寒熱) 무소불의(無所不宜)" 구법파(灸法派)를 중심(中心)으로))

  • Lim, Han-Je;Yoon, Jong-Hwa
    • Journal of Acupuncture Research
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    • v.17 no.2
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    • pp.53-68
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    • 2000
  • As compared with acupuncture, The moxibustion occurred differently in the background of formation and also disagreed in the process of development. From the Jin(晉) dynasty to the Song(宋) dynasty, The school that attached importance to moxibustion had occupied superority by far and had schemed the development of moxibustion. But after the Song(宋) dynasty, The school that attached importance to acupuncture rose. Therefore, The school that attached importance to moxibustion, even if the power decreased, still had kept in existence and had achieved the development of moxibustion. Especially, Among the chinese physicians that recognized "Moxibustion can cure all disease, so don't discuss the weakness the firmness the chills the fever and cauterize the skin" till the Song(宋) dynasty, Ge Hong(葛洪) put in order the basic theory for moxibustion in (A handbook of prescriptions for emergencies). Wang Tao(王燾) only respected the moxibustion and said "Moxibustion has a strange effect, then all acupuncture herb-med(medical decoction) herb-ex are unattainable to it" in volume 14 (Medical secrets of an official). Dou Cai(實材) insisted that moxibustion is prime for supporting the Yang(陽) and always must be cauterized with moxa on Guan Yuan(關元) Qi Hai(氣海) Ming Guan(命關), Zhons Wan(中脘) etc. for supporting the Yang of Pi Shen(脾腎) in

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