I work on Full-Text RSS which can help convert abbreviated feeds into full-text versions. The idea is you'll get a new feed URL from Full-Text RSS to use instead of the original partial feed in your news reader or application.

Free to try here: http://ftr.fivefilters.org/ and code for a slightly older version available here: https://bitbucket.org/fivefilters/full-text-rss/src/master/