The silica microspheres coated with a thin layer of Er-doped phosphate glass are fabricated and whispering-gallery modes (WGMs) with quality factor of 8 × 106 in the 780 nm band are obtained. We demonstrate that the microsphere can form single-mode and multi-mode microlaser in communication-band with a pumping laser of wavelength 780 nm band. Moreover, the representative lateral emission distributed modes in the microsphere can be directly observed via the upconverted photoluminescence.
Spontaneous mutation at the adenine phosphoribosyl transferase (APRT) locus in clone 707 of the Friend cell line was examined. The frequency of cells resistant to 2,6-diaminopurine (DAP) was found to be 2.6 × 10−5 with a mutation rate of 1.81 Cheap Nike Roshe Run Mesh
× 10−6 cell−1 generation−1. APRT activities in 9 DAP-resistant clones were found to vary between 0 and 27% the level observed in wild-type cells. It is suggested that clone 707 cells are heterozygous or functionally hemizygous at the APRT locus.
Many different rules for decision making have been introduced in the literature. We show that a notion of Cheap Nike Free Run Uk generalized expected utility proposed in [F. Chu, J.Y. Halpern, Great expectation. Part I: On the customizability of generalized expected utility, in: Proc. IJCAI-03, Acapulco, Mexico, 2003] is a universal decision rule, in the sense that it can essentially all other decision rules. This approach gives us a general technique for designing new decision rules as well as providing a framework for comparing decision rules to each other.