Tin(II) alkoxides (Sn(OR)2, R=CH3, C2H5 and C4H9) were synthesized. I.R., H-NMR, mass and Mössbauer spectra are reported and discussed in terms of possible solid and solution state structures. The molecular weight of the butoxy compound is determined in methylene chloride solution and indicates a dimeric substance.
In this paper a relation between graphs and finite integer-pair sequences is established. Necessary and sufficient conditions under which a given finite sequence of pairs of integers can realize a graph are found. Results are extended to diagraphs.
In this paper, we show the existence of the strong solutions for the coupled suspension bridge equations. Furthermore, existence of the strong global attractors is investigated using a new semigroup scheme. Since the solutions of the coupled Air Max 2012 Prix
equation have Air Max 95 Pas Cher no higher regularity and the semigroup associated with the solutions is not continuous in the strong Hilbert space, the results are new and appear to be optimal.
The technique of staged reduction herniorrhaphies, without the ancillary use of pneumoperitoneum or of synthetic prosthetic sheeting, is a practical method for the management of huge ventral hernias. In 12 patients treated in this fashion, the success rate was satisfactorily high. No deaths occurred, and complications were few and relatively minor.