Discharge activity

Kanazawa, S., Chang, J.S., Round, G. et al. (1997) Removal of NOx from flue gas by corona discharge activated methane radical showers, J. Electrostatics 40 41, 651-6. 

The histaminergic neurons have several well-developed primary and secondary dendrites that overlap with each other. Furthermore, long dendrites from histaminergic neurons located close to the mammillary recess or to the basal surface of the mammillary body appear to penetrate into the ependymal layer and make contact with cerebrospinal fluid. Thus, it is likely that neuroactive substances such as cytokines, present in the cerebrospinal fluid, may influence the discharge activity of TMN neurons (Wada et al., 1991). Unlike the dopaminergic neurons, which are known to release dopamine from their dendrites, there is no evidence that these histaminergic dendrites store and/or release HA. 

Vanni-Mercier and colleagues (Vanni-Mercier et al., 2003) investigated the pharmacological effects of H3 receptor ligands on the discharge activity of presumed... 

Suaud-Chagny, M. R., K. Chergui, G. Chouvet, and Francois Gonon. 1992. "Relationship Between Dopamine Release in the Rat Nucleus Accumbens and the Discharge Activity of Dopaminergic Neurons During Local In Vivo Application of Amino Acids in the Ventral Tegmental Area." Neuroscience 49 63-72. 

Ferrichrome iron transport in the enteric bacteria affords an experimentally feasible model for mechanistic studies. The ligand is rugged and can be labeled to high specific activity by microwave discharge activation of tritium gas. The labile ferric ion can be replaced with chromium to yield the kinetically stable isostructural chromic complex, chromichrome (61). Assuming this analog has the transport properties of the iron complex, its 3H counts would be an index of the behavior of... 

Figure 21.4 SEM micrographs of (a) as-received FRP substrate, (b) glow discharge activated (0.15 volume fraction copper), and (c) electroless copper plated surface (xlOOO).

In this section a model describing the discharge activity inside the gas film is presented. The aim is to describe the evolution of the current with time and... 

To describe the stochastic process of the discharge activity, one introduces P n,t), the probability that n discharges had been initiated until time t ... 

Not only is the probability of discharge d of interest, but also the current evolution with time. From the description of the current evolution with time one can deduce the mean current, which is easily accessible experimentally and is important to evaluate the quantity of heat generated by the process. From the description of the stochastic process of the discharge activity given previously, the current can be computed. In order to obtain the current evolution equation, an auxiliary random variable n(t) defined by the time derivation of the random variable N(t) is introduced ... 

This evolution equation allows the description of the current during discharge activity with time. In particular, the mean current and the fluctuations in the current can be calculated, as shown in next section. Both quantities are important for the application of electrochemical discharges to machining. 

In order to further study the discharge activity, one has to compute the standard deviation of the current. Therefore, let us start with... 

From these two relations, one can see how the fluctuations in the current increase with the number of discharges per unit time Xd and therefore with the terminal voltage. The discharge activity, in terms of the mean current, becomes less stable with increasing terminal voltage. 

An active cathode (direct polarity machining) or active anode (reverse polarity machining) [63] can be used as a tool, of which the use of the former is most popular. As the discharge activity, and especially the discharge mechanism, differs for an active cathode and anode, the machining performances will also be different. 

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