Post photo effect

The ratio kjkp can also be obtained, from relation (55). This is a somewhat difficult, but relatively accurate method [34]. Reliable determination of the instantaneous rate during polymerization decay is not simple. The measurements are much easier when the pre- and post-effects are alternated in close order. An elegant way of producing such conditions is illumination of photo-initiated polymerization either with intermittent switching or by the motion of the polymerizing mixture in bands of light and darkness. 

All-weather solar cells, and the effect of post-plasma enhanced chemical vapour deposition photo-assisted annealing on multicrystalline silicon solar cells have been discussed. ... 

Fortunately, serious local infections are rare, as the peeling agents, especially phenol, are germicidal. Moreover, the skin on the face is rich in blood vessels and has effective defenses against infections. With age, however, there are fewer blood vessels in the face and the skin becomes more susceptible to external aggression. Infections seem to develop more readily and are more serious when peels are performed in a hospital setting, because of the presence of multiresistant strains. I am fortunate enough not to have any dramatic photos of post-peel infections to show, but many cases of secondary infection and scratch lesions from streptococci, staphylococci and Pseudomonas have been... 

As mentioned above, some amide monomers are easily converted into their living propagating radicals when they undergo photo-sensitized polymerization with DBPO in benzene or dioxane at room temperature. Therefore, it is of interest to examine the post-effect in the photo-sensitized polymerization of the amide monomers. Fig. 4 shows the results obtained in the post-polymerizations of AAm in dioxane and NMMAm in benzene at room temperature . As it can be seen from the figure, a small post-effect was observed in the AAm polymerization. On the other hand, no... 

---