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2. Professional Fraternity Association - Wikipedia

   en.wikipedia.org/wiki/Professional_Fraternity...

   The Professional Fraternity Association (PFA) is an American association of national, collegiate, professional fraternities and sororities that was formed in 1978.Since PFA groups are discipline-specific, members join while pursuing graduate (law, medicine, etc.) degrees as well as undergraduate (business, engineering, etc.) degrees.

3. Polish Falcons of America - Wikipedia

   en.wikipedia.org/wiki/Polish_Falcons_of_America

   As stated, the local units of the PFA are called "Nests". There were 160 nests in 1979 and 82 in 2016. Regional structures are called "Districts", which must have at least 500 members. The national convention meets quadrennially. Pittsburgh, Pennsylvania has been the headquarters of the group since 1912. [3]

4. Perfluoroether - Wikipedia

   en.wikipedia.org/wiki/Perfluoroether

   PFA tubing is commonly used to handle aggressive chemicals Nafion is a fluoroether with strongly acidic sulfonic acid substituents Acyclic perfluoroethers are analogues of diethylether , e.g. O(C 2 F 5 ) 2 , such perfluoro(2-ethoxyethane)sulfonic acid (PFEESA).

5. Perfluoroalkoxy alkane - Wikipedia

   en.wikipedia.org/wiki/Perfluoroalkoxy_alkane

   PFA offers high melt strength, stability at high processing temperatures, excellent crack and stress resistance and a low coefficient of friction. [1] Similarly enhanced processing properties are found in fluorinated ethylene propylene (FEP), the copolymer of tetrafluoroethylene and hexafluoropropylene . [ 5 ]

6. Somerset DA's wife faces PFA; says she wasn't abused - AOL

   www.aol.com/news/somerset-das-wife-faces-pfa...

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7. Performic acid - Wikipedia

   en.wikipedia.org/wiki/Performic_acid

   Performic acid (PFA) is an organic compound with the formula CH 2 O 3. It is an unstable colorless liquid which can be produced by mixing formic acid with hydrogen peroxide . Owing to its oxidizing and disinfecting action, it is used in the chemical, medical and food industries.

8. Per- and polyfluoroalkyl substances - Wikipedia

   en.wikipedia.org/wiki/Per-_and_polyfluoroalkyl...

   Skeletal structure of PFOS, an effective, persistent and bioaccumulative fluorosurfactant A physical sample of PFOA, appearing as a white solid as seen here in a relatively pure form. It is commonly referred to as the main harmful PFAS chemical and PFOA is responsible for many of the negative health effects commonly associated with PFAS.

9. Progress for America - Wikipedia

   en.wikipedia.org/wiki/Progress_For_America

   Progress for America (PFA) (a 501(c)(4)) and its affiliate Progress for America Voter Fund (PFA-VF) (a 527 committee) are national tax-exempt organizations in the United States. PFA was established in 2001 to support George W. Bush's "Agenda for America".