Concentration/time profile substrates

Figure 7. Concentration-time profiles during 1-hexyne hydrogenation over 0.4wt.% Pd/ACF. Reaction conditions 0.5kmol/ 1-hexyne in n-heptane (lOOmL) substrate-to-Pd molar ratio of 23,000 303 K pressure of 1.3 MPa 1500 rpm.

Assay of Homogenate for Aldrin Epoxidation. The following experimental sequence was designed to determine the optimum in vitro conditions for aldrin epoxidation in larval whole body homogenates 1) the effect of component chemicals generally included in an incubation mixture, 2) a pH profile, 3) a temperature profile, 4) a molarity profile, 5) a reaction time profile, 6) a larval concentration (enzyme concentration) profile, 7) a substrate concentration profile, and 8) a restudy of the effects of component chemicals in the initial incubation mixture (Step 1) upon aldrin epoxidation under optimum conditions as defined by steps 2-7 above. The effect of PBO, FMN, and FAD upon enzyme activity was also tested. 

Fig. 124. Intensity versus time profile obtained in GD-MS analysis of a Cr-Ni multilayer system on Si substrate (a) discharge current and (b) single-ion monitoring profiles of A Si, B Cr and C Ni (I), and concentration versus depth profile calculated from measurements (II). (Reprinted with permission from Ref. [613]).

Figure 1.9-1. Concentration vs time profile for the emission of DEGME from a water-based lacquer system for furniture coating. The substrate was particle board covered with oak veneer. Test chamber conditions 23 °C, 45 % rel. humidity, 1 h air exchange, Im /m loading (Fuhrmann and Salthammer, 1998).

Fig. 5 Longitudinal ccaicentration profiles of dissolved owgen, DOC (mn/1) in Reactor A durinn H.Polymorrtia cultivation at different cultivation times,t.Substrate concentration 5 g/1 ethanol (under strong owgen transfer limited growth).

All these experiments were carried out at such low scan rates that the outside diffusion layer of the cosubstrate (on the order of 105 A) is much larger than the film thickness. An experimental test for knowing whether this condition is fulfilled is that the plateau of S-shaped catalytic current then observed is much larger than the reversible cosubstrate peak observed in the absence of substrate i icat. Under these conditions, the concentration profiles within the film (bottom of Figure 5.30) do not depend on time. 

The input signal consists of two concentration profiles of the substrates partaking. Si and S2. In this study it was assumed that each of these concentration profiles can either follow the pattern described in Figure 4.2 or be constant. The output signal is defined as the time course of concentration of any component in the network. Thus, this network can potentially produce 4 -I- 2 output signals. 

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