Understanding the corrosion of uranium is important for its safe, long-term storage. Uranium metal corrodes rapidly in air, but the exact mechanism remains subject to debate. Atom Probe Tomography was used to investigate the surface microstructure of metallic depleted uranium specimens following polishing and exposure to moist air. A complex, corrugated metal-oxide interface was observed, with ...

the comparison of total and ionised serum calcium level in preeclamptic pregnant women and the women with normal pregnancy   z. salari md1*, n. eftekhari md2     1- assistan professor, dept of gynecology, university of medical sciences, kerman, iran 2- associated professor, dept of gynecology, university of medical sciences, kerman, iran     background: preeclampsia remains one of the important...

Abstract Zirconium alloys are common fuel claddings in nuclear fission reactors and susceptible to the effects of hydrogen embrittlement. There is a need be able detect image at atomic scale gain experimental evidence necessary fully understand Through use deuterium tracers, atom probe tomography (APT) spatially locate scale. Previous works have highlighted issues with quantifying concentration...

Simple synthetic routes to regioselectively deuterated tris[2-(dimethylamino)ethyl]amine (Me6TREN) variants are described. Imine formation with formaldehyde-d2 from tris(2-aminoethyl)amine (TREN) and subsequent reductions NaBD4 afforded N[CH2CH2N(CD3)2]3 or d18-Me6TREN in 79 % yield. A trisubstitution protocol 2-bromo-N,N-dimethylacetamide ammonium carbonate reduction of the N(CH2CONMe2)3 inter...

The first representative of a novel class mixed-anionic compounds, the sulfate hydride Na3SO4H, and corresponding deuteride Na3SO4D were obtained from solid-state reaction NaH or NaD with dry Na2SO4. Precise control is required, because too harsh conditions lead to reduction sulfide. A combined X-ray neutron diffraction study revealed that compound crystallizes in tetragonal space group P4/nmm ...

convulsion is one of the most common problems in children and hypocalcemia is one the most frequent etiological items in children’s convulsion. corrected qt (qtc) in ekg is prolonged in hypocalcemia, so it can be a useful tool for evaluation of serum ionized calcium. in three groups (first seizure, multiple seizures, without seizure or control ) every 25 cases, qtc, serum ionized ca, total ca, ...