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Electron paramagnetic resonance (EPR) or electron spin resonance (ESR) spectroscopy is a method for studying materials that have unpaired electrons. The basic concepts of EPR are analogous to those of nuclear magnetic resonance (NMR), but the spins excited are those of the electrons instead of the atomic nuclei. EPR spectroscopy is particularly ...
In 2012–2013, the UNECE EPR Programme undertook a review of a non-UNECE country – Morocco. [7] The EPR of Morocco [8] was carried out in cooperation with UNECA to facilitate the transfer of the EPR methodology and know-how from UNECE to UNECA. [9] In 2017, the UNECE EPR Programme undertook a review of another non-UNECE country – Mongolia.
The OECD review of Chile was conducted in close co-operation with UNECLAC. Co-operation has been extended to the Asian Development Bank (ADB) for the Chinese province of Yunnan in the Greater Mekong region. This paved the way for the OECD review of China, which was carried out as part of the second cycle of reviews.
In electrical engineering, earth potential rise (EPR), also called ground potential rise (GPR), occurs when a large current flows to earth through an earth grid impedance. The potential relative to a distant point on the Earth is highest at the point where current enters the ground, and declines with distance from the source.
An Enlisted Performance Report (EPR) is an evaluation form used by the United States Air Force. Instructions for constructing an EPR appear in chapter 3 of Air Force Instruction 36-2406: Officer and Enlisted Evaluation Systems. The EPR replaced the Airman Performance Report (APR) in the late 1980s. The EPR was replaced by the Enlisted ...
LC (top) and ST (bottom) optical fiber connectors, both with protective caps in place. An optical fiber connector is a device used to link optical fibers, facilitating the efficient transmission of light signals. An optical fiber connector enables quicker connection and disconnection than splicing.
Insurance company ratings explained. Mary Van Keuren. February 19, 2024 at 5:28 AM. ... Shopping around for a new policy is a logical time to review ratings, but you can also check annually when ...
EPR (nuclear reactor), European Pressurised-Water Reactor; EPR paradox (Einstein–Podolsky–Rosen paradox), in physics; Earth potential rise, in electrical engineering; East Pacific Rise, a mid-oceanic ridge; Electron paramagnetic resonance; Engine pressure ratio, of a jet engine; Ethylene propylene rubber