منابع مشابه
Mechanisms of enhanced sulfur tolerance on samarium (Sm)-doped cerium oxide (CeO2) from first principles.
The role of samarium (Sm) 4f states and Sm-perturbed O 2p states in determining the sulfur tolerance of Sm-doped CeO2 was elucidated by using the density functional theory (DFT) + U calculation. We find that the sulfur tolerance of Sm-doped CeO2 is closely related to the modification of O 2p states by the strong interaction between Sm 4f and O 2p states. In particular, the availability of unocc...
متن کاملDetection of Reactive Sulfur Molecules ( S 6 , S 7 , S 9 , S ^ ) in Commercial Sulfur , in Sulfur Minerals , and in Sulfur Melts Slowly Cooled to 20 ° C [ 1 ]
Quantitative analysis by high-pressure liquid chromatography shows that all commercial samples of elemental sulfur besides S8 contain traces of S7 (up to 0.56%) and in some cases also S6, S9, and polymeric sulfur (S«,). Pure S8 can be obtained by recrystallization from CS2. Elemental sulfur minerals also quite often contain traces of S7 (up to 0.3%). Since neither irradiation by daylight at 20 ...
متن کاملMyelotoxicity of samarium Sm 153 lexidronam in patients receiving prior treatment with chemotherapy or radiotherapy.
BACKGROUND The effect of prior treatment with radiotherapy and/or chemotherapy on the myelotoxicity of samarium lexidronam (Sm 153) in patients with metastatic bone lesions and bone pain was described. METHODS Single-institution retrospective chart review of patients receiving Sm 153. The effect of Sm 153 on peripheral white blood cell (WBC), platelet counts, and change from baseline was calc...
متن کاملStatus of Sm Calculations of B → S Transitions
We report recent progress in SM calculations of b → s transitions. We discuss the first NNLL prediction of the B̄ → Xsγ branching ratio, including important additional subtleties due to nonperturbative corrections and logarithmically-enhanced cut effects, and also recent results on the inclusive mode B̄ → Xsll. Moreover, new results on the corresponding exclusive modes are reviewed. Finally, we c...
متن کاملSalute to samarium.
Many years ago while studying for a degree in mineralogy, I was privileged to visit the Russian Ilmen Mountains, host to two minerals from which several rare-earth elements were discovered — monazite ((Ce, La, Nd, Th)PO4), and another mineral that was first described in 1839 by the German mineralogist Gustav Rose. He found uranium and tantalum in its composition and thus proposed the name urano...
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ژورنال
عنوان ژورنال: Journal of Phase Equilibria and Diffusion
سال: 2010
ISSN: 1547-7037,1863-7345
DOI: 10.1007/s11669-010-9790-9