Bimodal speed distribution

Figure 1 Inverse Abel transforms of the SfDz) images observed for photodissociation at 223, 235, and 248 nm. The center-of-mass translational energy releases calculated from these images are also shown. The fast component gradually changes from an isotropic distribution at 223 nm to an anisotropic distribution at 248 nm. The photoabsorption at 248 nm is dominated by a perpendicular transition to A A bimodal speed distribution occurs only in dissociation from the A state.

A striking experimental result is that the speed distribution of S (or the rotational distribution of CO) is bimodal (8,14,15). Since the bending wavefunction of a parent molecule and the rotational distribution of a diatomic fragment can be related by the rotational reflection principle (16), a Gaussian-shaped rotational distribution of CO may be anticipated for a single dissociation channel. The observed bimodal distribution implies that there is bifurcation in dissociation dynamics. The scattering distribution of S atoms observed by ion imaging indicates that the bimodal distribution occurs only for dissociation from the A ( A) state and not for the A ( 2 ) state. The question is why does it occur only from the A ( A) state ... 

The stress magnitude s history of three maker-particles which have different residence time is described in Fig. 7. The curve oscillates periodically due to the screw rotation. We focus on the highest value of the stress level as circled in Fig. 7 and its distribution is estimated by Eq. 4. The bimodal stress distribution is obtained in the case of the rotor at low rotational speed in Fig. 8. The height of the distribution curve corresponds to the flow rate and about half of the polymer melt does not overpass the wingtip at lOOrpm. On the contrary, the KB and rotor at high rotational speed shows uni-modal distribution and uniform stress induced mixing is expected. 

It is seen that the distribution is bimodal, with the coarse mode dominating the aerosol volume concentrations. The 1979 average volume concentration of aerosol less than 10 ym diameter was 32.4 ymVcm. From its large standard deviation, it is clear that the coarse particle mode exhibited considerable variation throughout the year. Records show that high coarse mode volume concentrations accompanied moderate-to-high wind speeds. The coarse material was very likely wind-blown dust of crustal composition. 

Then, by comparing the normalized EPIi and TIRFi curves in the presence of Baf A1, we calculated the kinetic of the movement of SLMVs out of EW field that we can consider as the first step of the endocytic process. The first derivative of the endocytosis curve shows the evolution of the speed of endocytic events during and after the stimulus they start at 600 ms during the stimulus, reach two maxima at 1.2 and 2.8 s and then end after 6 s. The bimodal distribution indicates the existence of two distinct phases of endocytosis and most probably, of two distinct modes of secretion. 

The first improvement in the plant was achieved by reducing the speed of the CBT impeller. A significant increase in mean particle size was achieved ( 50 to 60 p,m), although a bimodal PSD continued to be observed with fines in the 10-20 p,m range. This distribution is shown in Fig. 9-5. Improvements in centrifugation and drying rate were achieved, but the fines content prevented a sufficient increase to achieve the desired productivity. 

---