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- Dinh, T Quang, Keiji Goto, Toru Kawano, Toyohiko Ishihara
- 2011

We have derived a novel uniform asymptotic solution for the transmitted and scattered waves when the cylindrical wave is incident on a plane dielectric interface from the denser dielectric medium. We have confirmed the validity of the uniform asymptotic solution by comparing with the reference solution obtained numerically.

We derive the novel asymptotic solutions for the scattered field when a cylindrical wave is incident on a coated conducting cylinder with a thin lossy dielectric material. We show that the extended UTD (uniform geometrical theory of diffraction) solution and the modified UTD solution derived by retaining the second order term are uniformly applicable in the… (More)

- Dinh T Quang, Keiji Goto, Toyohiko Ishihara
- 2012

—In this paper, we shall derive a time-domain asymp-totic solution for the transmitted Gaussian pulse wave observed in the rarer medium when the Gaussian pulse is incident on a plane dielectric interface from the denser medium. The validity of the time-domain asymptotic solution is confirmed by comparing with the reference solution calculated numerically.… (More)

- Shan Zhang, Yoshimasa Takeda, Shingo Hagioka, Keiji Goto, Kiyoshi Morita
- Acta medica Okayama
- 2004

To elucidate the mechanism by which hyperbaric oxygen (HBO2) induces electrical discharge, changes in the extracellular concentrations of GABA and glutamate were measured every 5 min using a microdialysis technique in rats during a period of exposure to HBO2 (5 atm abs). Electrical discharge was observed at 28 +/- 4 min after the onset of exposure. Though… (More)

- Toru Kawano, Keiji Goto, Toyohiko Ishihara
- 2011

The uniform asymptotic solution with higher-order terms for the scattered fields by the discontinuity of the impedance surface has been derived. The validity of the asymptotic solution has been confirmed by comparing with the reference solution calculated numerically. The physical interpretation of the asymptotic solution is also clarified.

- Le Hoang Loc, Keiji Goto
- 2012

—We derive two kinds of uniform asymptotic solutions for the high-frequency scattered field when a cylindrical wave is incident on a coated conducting cylinder covered by a thin lossy dielectric material. We show that the extended UTD (uniform geometrical theory of diffraction) solution and the modified UTD solution derived by retaining the higher order… (More)