Grafting enhancement

Recent preliminary studies (8,9) indicate that when specific inorganic salts such as lithTum perchlorate and nitrate are used to replace mineral acid, analogous grafting enhancement is observed in the styrene polyethylene system, representative results being shown in Table III. Since this salt work, the first... 

Several decades ago, two studies showed that, as compared to dense vascular grafts, porous grafts enhanced the formation of a stable neointima as well as the growth of... 

Bohn MC, Cupit L, Marciano F, Gash DM (1987) Adrenal grafts enhance recovery of striatal dopaminergic fibers. Science 257 913-916. 

Tuszynski, M. H., Buzsaki, G., and Gage, F. H., Nerve growth factor infusions combined with fetal hippocampal grafts enhance reconstruction of the lesioned septohip-pocampal projection, Neuroscience, 36, 33, 1990. 

The graft copolymerization reaction is carried out by bringing the activated base polymer film into contact with the monomer in liquid or vapor form. The use of solvents in radiation grafting enhances the accessibility of monomer to the grafting sites due to the ability of the solvent to swell the base polymer. In poor swelling solvents, surface grafting occurs due to the slow down in monomer diffusion within the polymer. However, in good solvents. 

The stability for ORR of the 16.1% Rh catalyst was investigated under the same conditions as the sulfided Rh catalysts prepared by DP followed by H2S treatment. The 16.1% Rh catalyst showed a smaller half wave potential shift (0.012 V) than the Rh-900 sample (0.019 V) after a stability test for 24 h (Fig. 4) while with a more positive onset potential than the Rh-900. The results indicate that the grafted sample is more stable than the Rh-900 (rtem = 8.7 nm, rxrd = 8.0 nm) even with a much smaller particle size (rtem = 7nm, rxrd 3 mn). Hence, we can conclude that grafting enhances the stability of the Rh catalysts. 

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