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INFO: Full form for SCU is Strong-cobb Unit in Physics Related category
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INFO: Full form for IET is Integrated Energy Technique in Physics Related category
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INFO: Full form for FND is Folded Normal Density in Physics Related category
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INFO: Full form for LVE is Light Vibrational Energy in Physics Related category
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INFO: Full form for KIP is Kenya Ict Policy in Physics Related category
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INFO: Full form for IFD is Internal Force Deflection in Physics Related category
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INFO: Full form for IFD is Indentation Force Deflection in Physics Related category
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Fractional flow reserve (FFR) is a technique used in coronary catheterization to measure pressure differences across a coronary artery stenosis (narrowing, usually due to atherosclerosis) to determine the likelihood that the stenosis impedes oxygen delivery to the heart muscle (myocardial ischemia).

Fractional flow reserve is defined as the pressure after (distal to) a stenosis relative to the pressure before the stenosis. The result is an absolute number; an FFR of 0.80 means that a given stenosis causes a 20% drop in blood pressure. In other words, FFR expresses the maximal flow down a vessel in the presence of a stenosis compared to the maximal flow in the hypothetical absence of the stenosis.

INFO: Full form for FFP is Field-free Point in Physics Related category
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INFO: Full form for FAST is Force, Angle, Speed, Torque in Physics Related category
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The electron transport chain (ETC; respiratory chain) is a series of protein complexes that transfer electrons from electron donors to electron acceptors via redox reactions (both reduction and oxidation occurring simultaneously) and couples this electron transfer with the transfer of protons (H+ ions) across a membrane. The electron transport chain is built up of peptides, enzymes, and other molecules.

The flow of electrons through the electron transport chain is an exergonic process. The energy from the redox reactions creates an electrochemical proton gradient that drives the synthesis of adenosine triphosphate (ATP). In aerobic respiration, the flow of electrons terminates with molecular oxygen being the final electron acceptor. In anaerobic respiration, other electron acceptors are used, such as sulfate.

In the electron transport chain, the redox reactions are driven by the difference in the Gibbs free energy of reactants and products. The Gibbs free energy can be related to a quantity called the redox potential. The complexes in the electron transport chain harvest the energy of the redox reactions that occur when high-energy reactants convert to lower energy products and electrons are transferred from a lower redox potential to a higher redox potential, by creating an electrochemical gradient of ions. It is this electrochemical gradient that drives the synthesis of ATP via coupling with oxidative phosphorylation with ATP synthase.

In eukaryotic organisms the electron transport chain, and site of oxidative phosphorylation, is found on the inner mitochondrial membrane. The energy released by the reaction of oxygen with reduced compounds such as cytochrome c and (indirectly) NADH and FADH is used by the electron transport chain to pump protons into the intermembrane space, generating the electrochemical gradient over the inner mitochondrial membrane. In photosynthetic eukaryotes, the electron transport chain is found on the thylakoid membrane. Here, light energy drives the reduction of components of the electron transport chain and therefore causes subsequent synthesis of ATP. In bacteria, the electron transport chain can vary over species but it always constitutes a set of redox reactions that are coupled to the synthesis of ATP, through the generation of an electrochemical gradient, and oxidative phosphorylation through ATP synthase.

INFO: Full form for SEAM is Spatially Extended Anchor Mechanism in Physics Related category
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INFO: Full form for RHF is Restricted Hartree Fock in Physics Related category
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INFO: Full form for DBG is Disease Biophysics Group in Physics Related category
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INFO: Full form for TBDM is Tissue Bubble Diffusion Model in Physics Related category
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INFO: Full form for THR is Thru Hole Reflow in Physics Related category
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INFO: Full form for THR is Total Heat Rejection in Physics Related category
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INFO: Full form for UAM is United Atom Model in Physics Related category
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INFO: Full form for MICE is Muon Ionisation Cooling Experiment in Physics Related category
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INFO: Full form for PASS is Particle Accelerator Security System in Physics Related category
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INFO: Full form for FTS is Fusion Termination Shockwave in Physics Related category
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INFO: Full form for CERN is Conseil Europ in Physics Related category
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INFO: Full form for CERN is Conseil European Pour La Recherch in Physics Related category
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INFO: Full form for HPI is Hybrid Polarization Interferometry in Physics Related category
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