Residual magnetization

Signals from geometry, residual magnetism or slow permeability changes are reduced or eliminated. 

Figure A2.3.26 Mean-field and quasi-eheinieal approximations for the speeifie heat and residual magnetization of a square lattiee d= 2) eompared to the exaet results.

Gadolinium and dysprosium, both elements of the lanthanide family, differ in the electronic occupancy of their f-shells. As a result, they are very similar chemically but very different magnetically. The relaxivity 1/Tx of Dy-DTPA is as low as 0.1 1/mol s However, dysprosium has a pronounced ability to influence transiently the residual magnetic susceptibility of tissues as it passes through. This effect of Dy-DTPA seems to be ideal for cerebral perfusion imaging and may be useful for the quantitation of partial occlusions and reperfusion. 

Anomalies in the power wiring are a common cause of stray magnetic fields in commercial buildings and hospitals. Neutral-to-ground connections downstream of the main bonding connection cause some of the neutral current to return via the ground path. This path is not predictable and results in residual magnetic fields due to mismatch in the supply and return currents to the various electrical circuits in the... 

If the field is removed, there is a residual magnetization or remanence, Br. A reverse field, //, (coercive force), is required to demagnetize the material. The area enclosed by the B-H curve (hysteresis) is the energy loss per cycle, and the... 

Figure 4.15 Relative transmission T (called here the collecting efficiency ) of a CMA as a function of the kinetic energy of the electrons. The solid curve guides the eye through the experimental data. For energies higher than 4eV the transmission is constant, below this value it drops to zero (the cut-off effect due to disturbances in the performance of the analyser caused by residual magnetic fields and inhomogeneities of electrical fields, see Sections 4.5.2 and 4.5.3). Reprinted from J. Electron Spectrosc. Relat. Phenom., 15, Samson, 257 (1979) with kind permission of Elsevier Science - NL, Sara Burgerhartstraat 25, 1055 KV Amsterdam, The Netherlands.

Disturbances due to inhomogeneities in electric fields and to residual magnetic fields on electrons of low kinetic energy also occur in this mode of operation. They... 

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