Cold-setting ability

Our first and foremost concern is to dissipate the exothermic heat away from the reactor. This requires that we have the ability to bypass the feed preheaters such that excess heat from the process is not carried back with the reactor feeds. We introduce a set of bypass valves along with temperature controllers as shown in Fig. 5.15, We have elected to install the bypass valves on the cold side to lower the investment cost and facilitate maintenance. We also get better temperature control of the cold stream leaving the preheaters. In Fig. 5.15 we show the stream temperatures at the valve inlets as well as the control points. These data were obtained from the T-H diagram provided by Terrill and Douglas (1987a). Even though we bypass on the cold side, we see that one of the bypass valves has to operate at a temperature over 330°C,... 

The earlier results on the differences between cells from the cheeks, the mouth floor, and the tongue were further validated with an increase in the number of normal volunteers in this study. Of the 93 volunteers in the data set, 19 samples were deemed "normal for cheek, 20 for mouth floor, and 17 for tongue, with the different numbers because of the cellularity of samples and the concomitant ability to prepare a sample from the contents of the swab. Normal samples, in this context, were defined as samples collected from volunteers who indicated no use of tobacco or medications, no recent or active cold sores, no history of mononucleosis or abnormal oral infections, and no HPV vaccination. The entire data set from these volunteers comprise 13 651 cell spectra. Based on the number of cells in the smallest data set, 3500 spectra were selected randomly from each data set for the PCA analysis. 

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