Silicon environment studies using

None of these techniques is novel in concept, yet none had been adopted for 29si studies before our work (X> 8 > ) Use of a very hi Bq (in our case 11.75 T) is essential to achieve maximiim dispersion, since otherwise spectral overlap is a problem for all solutions except those at very high pH and/or very low concentration. Enrichment in 29si not only improves the S/N, but also introduces splittings in the spectrum for many silicon environments due to (si. Si) spin-spin coupling. Homonuclear decoupling then enables bands due to nuclei in the same chemical species to be... 

Surface spectroscopic examination of hydrated frozen silicone polymers is useful in the study of polymer structure as a function of hydration. Most surface spectroscopies utilize an ultrahigh vacuum, which is a hydrophobic environment. By freezing a polymer into its hydrated configuration and then examining it a UHV environment, it is possible to examine qualitatively and quantitatively the chemical structure of the hydrated polymer. This allows understanding of the hydrated polymer structure following plasma treatment and further refinement of the plasma chemical process. 

Since the Initial work of White (IQ), the Bell System and other major semiconductor users have extensively used silicones In the protection of numerous thin-film and thlck-fllm devices (24.25). The materials primarily have been condensation-cure silicones In xylene dispersion. The performance of encapsulated semiconductors used within the Bell System Is well documented (26). and studies continually In process support the use of silicones for the prevention of electronic component deterioration under conditions similar to the In-vlvo environment. 

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