Prof. Dr. Shuichi Okuda<br>
<br>
Research Institute for Advanced Science and Technology (RIAST)<br>
Osaka Prefecture University<br>
1-2 Gakuen-cho, Sakai, Osaka 599-8570<br>
Japan
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phone: +81-72-254-9846<br>
fax: +81-72-254-9938<br>
e-mail: okuda@riast.osakafu-u.ac.jp