Low temperature magnetic, thermal, and transport measurements in Ca2-xSrxRuO4 clarify the appearance of a cluster glass phase, after the evolution of a nearly ferromagnetic heavy-mass Fermi liquid from the spin-triplet superconductor Sr2RuO4. As the Mott transition is approached across a 2nd-order structural transition, both the magnetization and specific heat decrease considerably while the transport scattering rate diverges. A metamagnetic transition to a highly spin polarized state, with a local moment S=1/2, is observed. We argue that an orbital rearrangement with Ca substitution changes itinerant ferromagnetism to antiferromagnetism of localized moments.

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Impetigo contagiosa staphylogenes is commonly treated by administering a combination of nadi‰oxacin and tetracycline ointments. However, it is not clear whether nadi‰oxacin and tetracycline are stable after mixing. The purpose of this study was to evaluate the stability of these agents in combination. We also evaluated changes in antibacterial activity after mixing. Mixing the two ointments caused tetracycline to change from yellow to brown in the admixture. Furthermore, the tetracycline content in the ointment decreased in a time-dependent manner, to about 40％ at 288 h after mixing. In addition, the nadi‰oxacin content in the ointment did not change 288 h after mixing. In an alkaline environment (pH 9.0 and 11.0), the tetracycline content decreased and the color of tetracycline changed to brown. These results suggest that sodium hydroxide, which is an additive in nadi‰oxacin ointment, in‰uences the content of tetracycline. We evaluated the chemical sensitivity of Staphylococcus aureus using disk tests. Nadi‰oxacin and tetracycline ointment showed the largest radius of inhibition circle, followed by the admixture 0 h after mixing and the admixture 72 h after mixing. These results suggest that the antibacterial activity is inhibited by the admixture. We propose that pharmacists should avoid mixing nadi‰oxacin with tetracycline ointment in the treatment of impetigo contagiosa staphylogenes and should take care to avoid interactions caused by additives in the ointments.