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Heart failure with preserved ejection fraction (HFpEF) is a form of heart failure in which the ejection fraction – the percentage of the volume of blood ejected from the left ventricle with each heartbeat divided by the volume of blood when the left ventricle is maximally filled – is normal, defined as greater than 50%; [1] this may be measured by echocardiography or cardiac catheterization.
Marne, David J. McGraw Hill's National Electrical Safety Code (NESC) 2023 Handbook. McGraw-Hill Education. The 2023 NESC Handbook represents a next-generation tool for the professional who needs to understand the NESC. The handbook was developed for use at many levels in the electric and communication industries, including those involved in ...
The National Electrical Code (NEC), or NFPA 70, is a regionally adoptable standard for the safe installation of electrical wiring and equipment in the United States. It is part of the National Fire Code series published by the National Fire Protection Association (NFPA), a private trade association . [ 1 ]
The National Electrical Manufacturers Association (NEMA) [5] is the largest trade association of electrical equipment manufacturers in the United States. [6] Founded in 1926, it advocates for the industry and publishes standards for electrical products.
The NEC contracts now form a suite of contracts, with NEC being the brand name for the "family" of contracts. [16] When it was first launched in 1993, it was simply the "New Engineering Contract". This specific contract has been renamed the "Engineering and Construction Contract" which is the main contract used for any construction based project.
NEC-4 modified NEC-3 to better model very small antennas, like those on cell phones and WiFi routers. The most recent version, 4.2, includes a better version of the Sommerfeld model used in NEC-3 for in- and near-ground wires, added current sources instead of just voltage sources as in earlier models, and used a new memory management system ...
The National Electrification Administration (NEA; Filipino: Pambansang Pangasiwaan ng Elektripikasyon) is a government-owned and controlled corporation (GOCC) attached to the Department of Energy of the Philippines tasked in the full implementation of the rural electrification program (REP) and reinforce the technical capability and financial viability of the 121 rural electric cooperatives (ECs).
Disney's Animated Storybook (stylized as Disney's Animated StoryBook, and also known as Disney's Story Studio) [1] is a point-and-click adventure interactive storybook video game series based on Walt Disney feature animations and Pixar films that were released throughout the 1990s.