• A series of zirconolite ceramics Ca1-xCexZrTi2-2xAl2xO7 were prepared. All the solid solution ( x = 0–0.35) adopted zirconolite-2M (C2/c) structure. XANES data revealed that Ce was partially reduced to Ce3+ oxidation state. The most favourable phase assemblage found for composition with 0.20. stoichiometry Ca 1-x ZrTi 2-2x Al 2x O 7 0–0.35), considered as a host immobilisation separated pluto...

Background: Adult onset Still’s disease (AOSD) is uncommon condition regarding which sparse published data are available from India. Methods: Retrospective study of 6 patients, who presented with pyrexia of unknown origin (PUO) seen over a 7-year period who were diagnosed to have AOSD after a thorough work-up. Results: Their mean age was 24.6 (range 18-38) years; there were four males. Mean dur...

Radiation-induced pulmonary carcinogenesis was compared in female Wistar rats following either inhalation exposure to alpha-emitting (239)PuO(2) aerosols, whole-body or thoracic X-ray irradiation. Dose-dependent survival reduction was correlated with increased malignant lung tumors at doses over 0.45 Gy, reaching the maximum incidence of 90% at 6.6-8.5 Gy in (239)Pu-exposed rats. While the diff...

For over 80 years, plutonium dioxide has been routinely produced via thermal decomposition of hydrated plutonium(IV) oxalate. Despite the longstanding utility this process, chemical structures starting materials and intermediates during conversion remain ill-defined. To help resolve uncertainty, we measured high-resolution Raman infrared spectra Pu(C 2 O 4 ) ·6H that was heated to 25, 100, 220,...