CATALYTIC CONVERTER FAILURES: If a catalytic converter needs replacing, one of the problems below most likely contributed to its failure. Engine Tune-Up Required. A number of problems could occur to the catalytic converter as the result of an engine that is out of tune.
View Full Document. - Habituation : refers to gradual reduction in the strength of a response due to repetitive stimulation.
T2 * relaxation refers to the decay of transverse magnetization seen with gradient-echo (GRE) sequences. T2 * relaxation is one of the main determinants of image contrast with GRE sequences and forms the basis for many magnetic resonance (MR) applications.2 * is shorter than T2 (Fig 1), and their relationship can be expressed by the following equation (3), where Î³ is the gyromagnetic ratio: 1/T2 * = 1/T2 + Î³ Î´B inhom, or 1/T2 * = 1/T2 + 1/T2â², where 1/T2â² = Î³ Î´B inhom, and Î´B inhom is the magnetic field inhomogeneity across a voxel.