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APC was founded in 1981 by three MIT Lincoln Lab electronic power engineers. Originally, the engineers focused on solar power research and development. [2] When government funding for their research ended, APC shifted its focus to power protection by introducing its first UPS in 1984.
This article requires significant re-work. It is woefully incomplete. Do not rely on it. Premature atrial contraction (PAC), also known as atrial premature complexes (APC) or atrial premature beats (APB), are a common cardiac dysrhythmia characterized by premature heartbeats originating in the atria.
Advanced process control (APC) refers to several proven advanced control techniques, such as feedforward, decoupling, and inferential control. APC can also include Model Predictive Control, described below. APC is typically implemented using function blocks or custom programming capabilities at the DCS level.
There are several solutions to reduce the THD I in a double-conversion UPS: Classic solutions such as passive filters reduce THD I to 5%–10% at full load. They are reliable, but big and only work at full load, and present their own problems when used in tandem with generators. An alternative solution is an active filter.
APC tablet, analgesic compound of aspirin, phenacetin, and caffeine Argon plasma coagulation , an endoscopic technique for controlling hemorrhage Atrial premature complexes , a type of premature heart beat or irregular heart beat or arrhythmia which start in the upper two chambers of the heart
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The aPTT-based APC resistance test involves a modified aPTT test performed in the presence and absence of activated protein C (APC). [1] [5] The ratio of these aPTT values is calculated and is called the APC sensitivity ratio (APCsr) or simply APC ratio (APCr). [1] [5] This ratio is inversely related to the degree of APC resistance. [7]
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