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Repeating unit of polyphthalamide. Polyphthalamide (aka.PPA, [1] High Performance Polyamide) is a subset of thermoplastic synthetic resins in the polyamide family defined as when 55% or more moles of the carboxylic acid portion of the repeating unit in the polymer chain is composed of a combination of terephthalic (TPA) and isophthalic (IPA) acids. [2]
A power purchase agreement (PPA), or electricity power agreement, is a long-term contract between an electricity generator and a customer, usually a utility, government or company. [ 1 ] [ 2 ] PPAs may last anywhere between 5 and 20 years, during which time the power purchaser buys energy at a pre-negotiated price.
Public Policy and Administration, an academic journal on public administration, often abbreviated as PPA; Paraguayan People's Army, a group considered a terrorist organization by the Paraguayan state; Parti du Peuple Algerien, an Algerian political party; Philadelphia Parking Authority, a parking agency in Pennsylvania, United States
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PPA is a metastable polymer known for its ease of synthesis and rapid depolymerization. In addition, its properties can be easily influenced and manipulated upon either functionalizing the phthalaldehyde monomer with different groups, most efficiently, electron withdrawing groups, or employing different functional groups as end caps. 3
The class, designed with a high level of modularity and automation, is going to be delivered in a full, a light+ and a light configuration in terms of different sensors and equipment embarked and can perform multiple functions, ranging from patrol with sea rescue capacity to civil protection operations and, in its most highly equipped version, first line fighting vessel.
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Purchase price allocation (PPA) is an application of goodwill accounting whereby one company (the acquirer), when purchasing a second company (the target), allocates the purchase price into various assets and liabilities acquired from the transaction.