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Perfluoroalkoxy alkanes (PFA) are fluoropolymers. They are copolymers of tetrafluoroethylene (C 2 F 4 ) and perfluoroethers (C 2 F 3 OR f , where R f is a perfluorinated group such as trifluoromethyl (CF 3 )).
The Professional Footballers' Association (PFA) is the trade union for professional footballers in England and Wales.. Founded in 1907, it is the world's oldest professional sports trade union, [2] with approximately 5,000 current members each season, including players from the Premier League, EFL and Women's Super League. [3]
.pfa, Printer Font ASCII, a file extension for PostScript Printer Font ASCII; Predictive failure analysis, a technology for hard disk health monitoring, the predecessor of S.M.A.R.T. Portable Format for Analytics, a JSON-based file format for encoding data analytics, such as data mining models.
Per- and polyfluoroalkyl substances (also PFAS, [1] PFASs, [2] and sometimes referred to as "forever chemicals" [3] [4]) are a group of synthetic organofluorine chemical compounds that have multiple fluorine atoms attached to an alkyl chain; there are 7 million such chemicals according to PubChem. [5]
The Professional Footballers' Association Men's Players' Player of the Year (often called the PFA Men's Players' Player of the Year, the Players' Player of the Year, or simply the Player of the Year) is an annual award given to the player who is adjudged to have been the best of the year in English football. [1]
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.
Paraformaldehyde (PFA) is the smallest polyoxymethylene, the polymerization product of formaldehyde with a typical degree of polymerization of 8–100 units. Paraformaldehyde commonly has a slight odor of formaldehyde due to decomposition. Paraformaldehyde is a poly-acetal.
The Professional Footballers' Association Merit Award (often called the PFA Merit Award, or simply the Merit Award) is an award given by the Professional Footballers' Association (the PFA) for meritorious service to football. [1] The award was first given in 1974, and was won (jointly) by Bobby Charlton and Cliff Lloyd.