• Title/Summary/Keyword: Kyung Keun

검색결과 2,034건 처리시간 0.023초

Prostatic Retention Cyst in an Intact Male Golden Retriever

  • Kang, Jong-Il;Kim, Jin-Ho;Park, Soo-Kyung;Lim, Pyo;Ham, Sung-Keun;Kim, Won-Hong;Kim, Ho-Jun;Jang, Seung-Jun;Hong, In-Seon;Na, Eung-Sic;Baek, Ji-Na
    • 한국임상수의학회:학술대회논문집
    • /
    • 한국임상수의학회 2006년도 춘계학술대회
    • /
    • pp.126-126
    • /
    • 2006
  • PDF

INVESTIGATION OF DOMAIN STRUCTURES IN $LiNbO_3$ SINGLE CRYSTALS GROWN BY CZOCHRALSKI METHOD

  • Do, Won-Joong;Kyung Joo;Shin, Kwang-Bo;Auh, Keun-Ho
    • 한국결정성장학회:학술대회논문집
    • /
    • 한국결정성장학회 1998년도 PROCEEDINGS OF THE 14TH KACG TECHNICAL MEETING AND THE 5TH KOREA-JAPAN EMGS (ELECTRONIC MATERIALS GROWTH SYMPOSIUM)
    • /
    • pp.111-114
    • /
    • 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

  • PDF

EFFECT OF POLING ON THE PHYSICAL PIEZOELECTRIC PROPERTIES OF $LiNbO_3$

  • Han, Ji-Woong;Kyung Joo;Shim, Kwang-Bo;Auh, Keun-Ho
    • 한국결정성장학회:학술대회논문집
    • /
    • 한국결정성장학회 1998년도 PROCEEDINGS OF THE 14TH KACG TECHNICAL MEETING AND THE 5TH KOREA-JAPAN EMGS (ELECTRONIC MATERIALS GROWTH SYMPOSIUM)
    • /
    • pp.133-136
    • /
    • 1998
  • Undoped and 5mol%MgO DOPED {{{{ { LiNbO}_{ 3} }}}} were grown by floating zone method. The grown crystals were poled to c-azis in different electric conditions. Ferroelectric domain patterns related to the poling conditions were investigated by chemical etching and the poling effects on the piezoelectric in the undoped and MgO doped Crystals were studied.

  • PDF

스카이브릿지를 이용한 RC 주거용 건물의 진동제어 (Vibration Control of RC Residential Building Structure Using Sky-Bridge)

  • 안상경;오정근
    • 한국콘크리트학회:학술대회논문집
    • /
    • 한국콘크리트학회 2006년도 춘계학술발표회 논문집(I)
    • /
    • pp.450-453
    • /
    • 2006
  • Coupling adjacent building with supplemental damping devices is a developing method of reduced structural response due to wind and seismic excitations. The philosophy is to allow structures, vibrating at different frequencies, to exert control forces upon one another to reduce the overall responses of the system. This paper studies the effect of installing vibration control devices of two high rise building structures(49 stories and 42 stories) connected by sky-bridge. According to the analysis results the use of sky-bridge can be effective in increasing damping ratio of the system.

  • PDF