Effective aperture width

Fig 4.5 Effective aperture width distribution with increasing sieving time. 

The effective aperture width of a grating is the width of an individual groove (d) multiplied by the total number of grooves (N) and by cos r (r is the angle of reflection) ... 

All the parameters and parameter groups discussed above may vary due to temperature variation. Carbol et al. (2002) have studied the temperature dependence of sorption parameters for cesium. However, the definite trend of variation of sorption parameters when temperature changes is still unclear. In this study, we therefore do not consider the variation of the sorption parameters with temperature. The porosity is also assumed to be unchanged by temperature. We focus our study mainly on the influences of temperature on the width of the effective aperture and the parameter group K (mainly through the variation of the diffiisivity D). 

Table 31 Dispersion and bandpass values of a commercial instrument using an echelle grating with 79 groovesmm, with a blaze angle of 6T 26, and having the parent line at the 42nd order. Effective aperture of the spectrometer is f/8. The width of the entrance slit is 80 ptm, and the width of the exit slit is 40 fJm. (Unicam Analytical Systems Ltd.)...

It investigates that the aperture width increase with the JRC and decrease with the JMC, and the flow conductivity varies correspond with the aperture, and also the effective of the seepage model has been clarified. Meanwhile, the seepage model should be researched in detail from the seepage tests. And it should be considered and expected that the seepage model could be applied to the mine excavation and other engineering projects. 

The field in the forward sector can basically be obtained approximately by integration of the incident field over the aperture width as discussed in Section 2.9.2. Note, however, that the entire pattern in Fig. 8.1 was obtained from the SPLAT program and therefore is as exact as the method of moments. In other words, the effect of edge currents is rigorously observed. See also Section 8.5. 

There are two other serious physics questions relating to cusp ended reactors which are still unresolved. One is that of the sheath thickness. If the sheath broadens to an ion gyroradius, the performance is degraded appreciably (Table 1), and it seems doubtful that even 6 = 2r could be maintained as an effective aperture loss width during the burn cycle. Finally, the question of suppression of electron conduction along the field lines needs to be carefully considered. 

For a given aperture width between the screen bars the cut size and the selectivity of the screening operation can be modified by varying the flow velocity and solids concentration of the slurry. Reduction of the velocity increases the cut size and the probability that oversize particles will be present in the fines, while the probability of undersize particles being present in the coarse rejects is correspondingly reduced. Increasing the flow velocity produces the opposite effects. 

How is the efficiency influenced by the BGE Peak I broadening is the result of different processes in CZE I occurring during migration [in addition, extracolumn effects contribute to peak width (e.g., that stemming from the width and shape of the injection zone, or the -f. aperture of the detector cell)]. If the system behaves I linearly, the individual peak variances (the second mo-9 ments), o j, are additive according to a... 

The varying incident beam aperture has minimal effect on the resolution of the instrument due to excellent focusing. As shown in Figure 3.35, right, the average full width at half maximum (FWHM) increases from -0.073 to -0.077° (i.e. only by -5%) when the divergence slit aperture increases from 0.05° to completely opened (i.e. by as much as -10,000%). The dependence of the FWHM on the slit opening saturates at wide apertures, whieh is consistent with the full illumination of the specimen when DS exceeds 1°. 

When the Michelson interferometer with finite aperture is not properly adjusted nonlinear phase errors arise These phase errors are no longer linearly dependent on the wave number v, and they cause an asymmetric distortion of the interferogram (Figs, 40b and 41). It should be noted that all illustrations in connection with errors (Figs. 39, 40 and 41) have been produced by computer simulation (cf. Appendix 1). In order to make the essential features as clear as possible the effects of finite resolution etc. are left out where they have not necessarily to be included. In these cases, the resolution width /d is given in the figure (Figs. 39a—c). In Fig. 41, the error correction is demonstrated with finite... 

The most widely used design is the inclined vibrating screen. These use decks at some 15° to 20° to the horizontal mounted on a vibrating frame to transport materials across and through the screen. Such screens can be used in series to produce a number of sized fractions. Alternatively, multi-deck screens can be used, in which two, three, or even four decks are mounted on one frame, with the largest aperture mat being at the top and the smallest at the bottom of the frame (Fig. 5.8). With all designs, the material should be fed uniformly across the width of the deck at a steady rate to maximise the effectiveness of the screen. 

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