Guided elastic waves in a pre-stressed compressible interlayer.

The propagation of guided elastic waves in a pre-stressed elastic compressible layer embedded in a different compressible material is examined. The waves propagate parallel to the planar layer interfaces as a superposed dynamic stress state on the statically pre-stressed layer and host material. The underlying stress condition in the two materials is characterized by equibiaxial in-plane deformations with common principal axes of strain, one of the axes being perpendicular to the layering.

Evaluation of the silicon phthalocyanine pc 4 for photodynamic bone marrow purging.

The silicon phthalocyanine Pc 4 was tested as a photosensitizer for the selective photoinactivation of malignant cells in bone marrow transplantation samples. Using a murine model system, incubation of 1.5×107 cells/mL with 15 nM Pc 4 followed by exposure to red light (λ>600 nm, fluence of 18 J/cm2) was shown to result in a greater than 6 log10 reduction of the clonogenic growth for the murine cell lines ABE-8.