Stable Po2-region of ordered perovskites Ca2FeMoO6 and Sr2FeMoO6 at 1200°C

Stable Po₂-region of the title compounds at 1200°C has been determined via an isothermal gravimetry. Ca₂FeMoO₆ was stable within the region $\text{?8.9 ≧}\text{log Po}{}_2\text{≧ ?12.5}$, decomposed by reduction into a triphasic mixture of CaO + Mo + ε-Fe₃Mo₂, and by oxidation into a biphasic mixture of CaMoO₄ (Scheelite structure) + CaFeO_2.5 (Brownmillerite structure). Sr₂FeMoO₆ was stable within the region $\text{?9.8 ≧}\text{log Po}{}_2\text{≧ ?13.5}$, decomposed by reduction into SrO + Mo + ε-Fe₃Mo₂ and by oxidation into SrMoO₄ (Scheelite structure) + SrMoO_3?x (non-stoichiometric perovskite structure).     

Candida costochondral osteomyelitis, report of a case and review of the literature

A 49-year-old man was admitted to the hospital with swelling and redness overlying the left anterior chest wall. He had been treated by percutaneous transluminal coronary recanalization for acute myocardial infarction with central venous catheter one year and four months earlier. Since then, he had had no symptoms. An incision and drainage was performed and specimen showed acute and chronic granulation tissue containing pus with involvement of underlying left third rib and cartilage. Candida albicans was cultured from the drainage specimen. Treatment with fluconazole was began. The lesion failed to clear following incision and drainage, continuing to exude pus, then open surgical excision and curettage of the cartilage and rib was performed. After 2 months of therapy, the lesion had resolved. This is a rare case of candida costochondral osteomyelitis without a definite proof of former hematogenous candida infection.