Displacement imaging

One possibility to visualize fluid transport directly in the fixed bed by means of a series of time-encoded displacement images is given by the spin tagging technique... 

The forward problem is the calculation of displacement fields from input viscoelasticity parameters. The latter describe correctly the investigated object if the calculated and measured displacement images converge. 

Sade LE, Kanzaki H, Severyn D, Dohi K, Gorcsan J, III. Quantification of radial mechanical dyssynchrony in patients with left bundle branch block and idiopathic dilated cardiomyopathy without conduction delay by tissue displacement imaging. Am. J. Cardiol. 2004 94 514-8. 

Sieve analysis using standard mesh screens is commonly used to determine particle size and size distribution of pellets and the reader is referred to standard texts for further information (61). Several types of densities have been defined for pellets based on interparticulate (void fraction) and intraparticulate pore volumes and include true, apparent, effective, bulk and tapped. The bulk and tapped densities may be obtained using simple devices, such as that used to evaluate granulations in tableting, while the true and apparent densities need more complex techniques based on mercury intrusion, gas flow, powder displacement, imaging or minimum fluidization velocity (62). 

Problems have also been observed at resist coat due to substrate nonwetting or oleophobicity. This problem is independent of the more commonly occurring pattern lifting (see Fig. 3 for examples of missing or displaced images) adhesion failure problem, which is observed after resist exposure and development. We will also focus on work addressing these latter two specific problem areas in this paper. 

The model system is a cube of glassy polymer with 3D periodic boundaries, filled with chain segments at a density corresponding to the experimental value for the considered polymer. The entire contents of the cube are formed from a single parent chain with the chemical structure of the polymer. The cube can thus be considered as part of an infinite medium, consisting of displaced images of the same chain, as shown on Fig. 58. 

OTHER IMAGING METHODS 5.1. -Space and displacement imaging... 

U. TaDarek, E. Rapp, H. van As, E. Bayer, Using NMR displacement imaging to characterize electroosmotic flow in porous media. Magn. Reson. Imaging, 2001, 19, 453 56. 

Fig. 20.9. a-c Atlanto-axial rotatory fixation (AARF) with composite axial CTs and 3D reconstruction showing a Type 2 AARF. d Diagrammatic representation of AARF Type 1, rotatory fixation without anterior displacement (occurs within normal range of motion). Type 1, rotatory fixation with atlas displacement of up to 5 mm. Type 3, anterior displacement of more than 5 mm. Type 4, posterior displacement. Image modified from Banit and Murrey (2005)... 

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