• 제목/요약/키워드: Yasui operation

검색결과 2건 처리시간 0.014초

Staged Repair after Hybrid Palliation for Interrupted Aortic Arch with Systemic Outflow Tract Obstruction

  • Lee, June;Kim, Yong Han;Lee, Cheul
    • Journal of Chest Surgery
    • /
    • 제52권1호
    • /
    • pp.32-35
    • /
    • 2019
  • Surgical management of interrupted aortic arch (IAA) with systemic outflow tract obstruction is clearly a challenge. If both ventricles are adequate, the Yasui operation is a useful option. Otherwise, a staged approach through initial hybrid palliation and delayed biventricular repair, tailored to the degree of obstructed outflow, serves to avoid a high-risk neonatal procedure. Herein, we present a patient with IAA and severe systemic outflow tract obstruction whose treatment involved hybrid palliation, followed by a Yasui operation.

Effect of Sheath Structure on Operating Stability in an Anode Layer Thruster

  • Yasui, Shinsuke;Yamamoto, Naoji;Komurasaki, Kimiya;Arakawa, Yoshihiro
    • 한국추진공학회:학술대회논문집
    • /
    • 한국추진공학회 2004년도 제22회 춘계학술대회논문집
    • /
    • pp.245-250
    • /
    • 2004
  • The discharge current oscillation has been measured for various hollow anode widths and its axial positions using a 1㎾-class anode layer hall thruster. As a result, there were thresholds of magnetic flux density for stable discharge. The plasma structure inside the hollow anode was numerically analyzed using the fully kinetic 2D3V Particle-in-Cell (PIC) and Direct Simulation Monte Carlo (DSMC) methods. The results reproduced both stable and unstable operation modes. In the stable operation case, which corresponds to the case with low magnetic flux, the plasma penetrated into the hollow anode deeper than the case with higher magnetic flux density case. This suggests that comparably large substantial anode area should contribute to stable operation.

  • PDF