M. Ohhashi

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Our operative experience of reconstruction of the skull base using a silicone plate during rhinoseptoplastic transsphenoidal surgery is described. A suitably shaped plate can be easily and quickly made from a large silicone block of the type that is widely used in cosmetic surgery. The plates can be distinguished on magnetic resonance images(More)
OBJECTIVES The purpose of this study was to examine the bonding effect of polyvalent alcohols as dentine primers without a methacrylate group, which may cause contact dermatitis. METHODS The efficacy of polyvalent alcohols as dentine primers was estimated by measuring the wall-to-wall polymerization contraction gap width of a light-activated resin(More)
  • Ogawa Yuichi, Himura Haruhikor, +11 authors Yoshida Zenshol
  • 2001
Relaxation phenomena have been observed in many plasma experiments, and some theoretical explanations have been presented. Recently Mahajan-Yoshida has discovered a new relaxation state based on two-fluid plasma theory, and proposed a possibility for confining high-beta plasmas. In this theory two fluids (electron and ion) shouldrelax to the conditions;V(More)
Nonlinear interaction of an intense electromagnetic (EM) beam with relativistically hot electron–positron plasma is investigated by invoking the variational principle and numerical simulation, resting on the model of generalized nonlinear Schrödinger equation with saturating nonlinearity. The present analysis shows the dynamical properties including the(More)
This paper presents an architecture for fast evaluation of unary functions such as reciprocal, square root and reciprocal square root. The theory behind the architecture has been presented in [1]. The paper shows the results of extensive simulation that have allowed us to implement the architecture with minimum chip count and maximum accuracy. The accuracy(More)
Interaction of an intense electromagnetic (em) beam with a relativistic electron-positron (e-p) plasma is investigated. It is shown that the thermal pressure brings about a fundamental change in the dynamics-localized, high amplitude, em field structures, not accessible to a cold (but relativistic) plasma, can now be formed under well-defined conditions.(More)
OBJECTIVES The effects of the duration of cleaning and priming on the marginal adaptation of a light-activated resin composite in a cylindrical dentine cavity were examined by measuring the width of the wall-to-wall polymerization contraction gap. METHODS The dentine cavity was cleaned with ethylene diamine tetra-acetic acid (EDTA) and primed 35 vol%(More)
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