4 million of CiNii articles from NII-ELS (Academic Society Journals and Research Bulletins of Universities) became searchable at "Article Search" <http://ronbun.search.yahoo.co.jp/> Yahoo! JAPAN has newly started.
"Article Search" of Yahoo! JAPAN searches 4 million articles of CiNii.
You can see basic information such as titles, authors and abstracts at search result page of Yahoo!.
Article information links to Article Details Page of CiNii.
For details, please see the News page of National Institute of Informatics (Japanese).