Akira Osawa

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A new approach is proposed to estimate fine root production, mortality, and decomposition that occur simultaneously in terrestrial ecosystems utilizing sequential soil core sampling or ingrowth core techniques. The calculation assumes knowledge of the decomposition rate of dead fine roots during a given time period from a litter bag experiment. A mass(More)
A block placement program and a routing program for inter-block connection of master-slice LSI's are described. The placement program reduces the total expected wire length, by iterative improvements of block placement and gate assignment to blocks. The routing program employs Lee's algorithm basically, and modifications have been made to increase(More)
To estimate cause-and-effect relationships of decomposition rates of fine root litter up to 2 mm in diameter, we explored the relationships between mass loss rates and substrate litter properties with respect to chemical and morphological dynamics. Mass loss, nitrogen (N) concentration, specific root area (SRA), root tissue density (RTD), and their(More)
PURPOSE The aim of this study was to develop a new diagnostic support system using content-based image-retrieval technology. In this article, we describe the mechanism and preliminary evaluation of this system for use with CT images of solitary pulmonary nodules. MATERIALS AND METHODS With the approval of the institutional review board of Shizuoka Cancer(More)
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