Fuzzy Models of Choice of Prevention Schemes for the Occurrence and Development of Gangrene of the Lower Extremities.

The study focuses on the choice of prevention schemes of the appearance and recurrence of gangrene of the lower extremities, depending on any of the degrees of confidence that the patient will have gangrene or will experience its relapse. The degree of confidence is determined using the fuzzy logic of decision making on the relevant membership functions. For each of the selected classes, an appropriate prevention scheme has been developed, the effectiveness of which was tested using the theory of measuring latent variables and the synthesis of mathematical models of their choice depending on the degree of risk of the occurrence and recurrence of lower extremities gangrene.

Kinetics of Cr to Cr ion valence transformations and intra-lattice cation exchange of Cr in Cr,Ca:YAG ceramics used as laser gain and passive Q-switching media.

This paper focuses on the kinetics of Cr formation in Cr,Ca:YAG ceramics prepared by solid-state reaction sintering. The kinetics of Cr formation was studied by annealing of Cr,Ca:YAG ceramics in ambient air under different temperatures at different times, resulting in the transformation of Cr to Cr. The activation energy (E) of Cr oxidation determined by the Jander model was 2.