Yoshiyasu Fujimoto

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Particleboard specimens with various particle sizes were conditioned into two ranges: low and high moisture content. One set was investigated for internal bond (IB) strength and acoustic emission (AE) events during tensile tests perpendicular to the plane and the other for ultrasonic wave transmission characteristics in the thickness direction. The(More)
The aluminum coordination state in bismuth doped silica glass, which has new broad infrared emission at 1.3 lm regions, was investigated by using Al NMR, and it is demonstrated that 6-fold coordinated aluminum ions with corundum structure are dominant in bismuth doped silica glass until Bi2O3 concentrations of 1.0 mol% with Al2O3. The aluminum ion(More)
Particleboard (PB), oriented strand board (OSB), and medium-density fiberboard (MDF) were subjected to various climatic conditions at four sites (Morioka, Tsukuba, Okayama, and Miyakonojo; sites 1, 2, 3, and 4, respectively) in Japan. The reduction in the nail-head pull-through strength and lateral nail resistance strength (both strengths combined are(More)
At present, few laser sources are available in the vacuum ultraviolet (VUV) region and most of them are either complicated or expensive. Among these are excimer lasers based on rare gas dimers [1]. However, limited tunability and the use of e-beam excitation impose serious experimental restrictions. Tunable radiation can be generated from nonlinear methods(More)
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