1. Graduate School of Science and Technology Kumamoto University Kurokami Kumamoto 860‐8555 Japan
2. Faculty of Advanced Science and Technology Kumamoto University Kurokami Kumamoto 860‐8555 Japan
3. Graduate School of Science University of Tokyo Tokyo 113‐0033 Japan
4. Center for Water Cycle, Marine Environment and Disaster Management Kumamoto University Kurokami Kumamoto 860‐8555 Japan
5. Institute of Transformative Bio‐Molecules (WPI‐ITbM) Nagoya University Nagoya 464‐8601 Japan
6. National Institute for Basic Biology and SOKENDAI (Graduate School for Advanced Studies) Okazaki 444‐8585 Japan
7. Institute of Pulsed Power Science Kumamoto University Kumamoto 860‐8555 Japan