Online dynamic analysis

Figure 15.13 A time course of MFI index estimated during microfiltration of 0.5% cross-linked S. cerevisiae suspension under AP= 61 kPa by online dynamic analysis.

Ryan C G and Jamieson D N 1993 Dynamic analysis—online quantitative PIXE microanalysis and its use in overlap-resolved elemental mapping Nucl. Instrum. Methods B 77 203... 

For failures of pipes belonging to the ring, the pressure regulation time is characterized by assuming a pressure increase rate of 2 mbar/h and using the results of the fluid-dynamic analysis which provides the minimum pressure increase AP to be actuated at the supply node so that all online nodes are served. 

The rotors can be preloaded with lyophilized reagents, which can be dynamically dissolved by the addition of buffer to the spinning rotor. Multiple samples can then be introduced into each of the radial cuvettes, or a single sample can be dynamically apportioned between the multiple cuvettes, each of which contain reagents for a different enzyme reaction. Consequently, multiple samples can be monitored for the same enzyme activity, or several different enzyme activities can be measured for the same sample. The very fast data reduction offered by the online computer provides the operator with printed results as soon as the analysis is complete. This approach provides highly precise data (Table II). 

The catalysts were tested in the dehydrogenation of tetrahydrothiophene (DHN of THT), the hydrodesulphurization of thiophene (HDS of thiophene) and the hydrogenation of biphenyl (HN of BP). The reactions were carried out in the vapor phase using dynamic flow microreactors equipped with an automatic online analysis. Reaction conditions are given in Table 1. 

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