CFR › Title 45 › Part 680Part 680 — National Science Foundation Rules of PracticeSubpart A — Rules of Practice for the National Science Foundation§ 680.10— Definitions; cross-references to employee ethical conduct standards and financial disclosure regulations.§ 680.11— Staff involvement with NSF proposals and awards.§ 680.12— One-year NSF post-employment restrictions.§ 680.13— Purposes for “substitute” requirements.