Coupling processes between parts

Saturation degree evolution has been reproduced reasonably. It should be pointed out that near the heater a wetting-drying cycle is observed, which is typical of coupled processes. Indeed, that point first increases its saturation degree, due to the water vaporisation that moves from the heater to the outer bentonite areas, and after a few days it dries because of this effect takes place eventually on that point. Finally water from the rock saturates the bentonite and the degree of saturation increases in a continuous manner. This coupling between temperature and water flow (in liquid or gas form) gives this cyclic response in the bentonite zone closer to the heater. This effect depends partly on the amount of water available for vaporisation. In this case, it was assumed that the slot between heater and bentonite blocks (1 cm) was filled initially with water, because of the initial emplacement conditions of the hole. 

The IR spectra as a function of were examined. The spectra did not vary in a monotonic way with stoichiometry. For = 0.66, the IR spectrum exhibited features that were characteristic of an insulator. From < = 0.5 to 0.25, the selected peaks (charge transfer bond, agv4 and b)u) appeared at almost the same position, although phase segregated neutral TCNQ species were observed in the spectrum for = 0.25. Further investigations of the IR spectra revealed energy transfer between the electroactive part and the alkyl chain inside the layer via a two-step coupling process [88,92],... 

The net reaction catalyzed by this enzyme depends upon coupling between the two reactions shown in Equations (3.26) and (3.27) to produce the net reaction shown in Equation (3.28) with a net negative AG°. Many other examples of coupled reactions are considered in our discussions of intermediary metabolism (Part III). In addition, many of the complex biochemical systems discussed in the later chapters of this text involve reactions and processes with positive AG° values that are driven forward by coupling to reactions with a negative AG°. ... 

The binding of PCP to its receptor initiates a series of coupled neurochemical events eventually leading to the expression of behavior. One such coupling reaction was described by BLAUSTEIN as a blockade of transmembrane channels that transport K+ into the neuronal cells. Since K+ movements are part of the process of neurotransmission between neurons, this effect of PCP may explain the results of studies by MARWAH and by JOHNSON, in which several neurotransmitter systems were shown to be involved in the actions... 

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