About OKABE TOORU
About 東大 生産技研 サステイナブル材料国際研究セ
About recycling
About Neodymium
About rare metal
About rare earth element
About constraint condition (restriction)
About Technology
About technology development
About Dysprosium
About resource
About character (group theory)
About environmental constraint
About profitability
About utilization
About reuse
About rare earth
About conversion to resource
About recycle technology
About natural resource
About Magnetic materials
About Separation methods in general
About レアメタル
About リサイクル
About 開発
About 動向