Results show that PuO(2+x), a high-composition (x </= 0.27) phase containing Pu(VI), is the stable binary oxide in air. This nonstoichiometric forms by reaction of dioxide with water and water-catalyzed oxygen. The PuO(2) + H(2)O rate 0.27 nanomoles per meter squared hour at 25 degrees C; activation energy to 350 C 39 kilojoules mole. Slow kinetics low lattice parameter-composition dependence for fluorite-related PuO(2+x) are consistent failure observe earlier studies. Perplexing aspects...

The thermal conductivity of oxide thin films deposited using dc, rf, and ion-beam sputtering is measured in the temperature range 80--400 K 3\ensuremath{\omega} method. Thermal data for amorphous ${\mathrm{SiO}}_{2}$ are nearly identical to bulk a-${\mathrm{SiO}}_{2}$. Data ${\mathrm{Al}}_{2}$${\mathrm{O}}_{3}$, while having a magnitude dependence similar oxides, show on deposition method; rf an ${\mathrm{Al}}_{2}$${\mathrm{O}}_{3}$ target produces with 35% smaller than prepared by...

Journal Article Total Body Potassium and Gross Composition in Relation to Age Get access T. H. Allen, Ph.D., Ph.D. U. S. Army Medical Research Nutrition Laboratory, Fitzsimons Hospital,Denver, Colorado, The University Of California's Los Alamos Scientific LaboratoryLos Alamos, New Mexico Search for other works by this author on: Oxford Academic PubMed Google Scholar E. C. Anderson, W. Langham, of Gerontology, Volume 15, Issue 4, October 1960, Pages 348–357,...

Once the initial density, D 1 , is noted, a single piece of freshly isolated mammalian tissue analyzed for water and fat. Knowing densities fat, tissue's fat-free 2 dry, 3 can be computed. Among various types soft tissues, since D3 similar, simple relationship shown to exist between content corresponding density. The biological extremes in water:fat:protein system thus operate such way that quantity fat predicted from an equation containing three variables, i.e. weight density its water....

The thermal conductivity of SiO2 and TiO2 optical coatings are measured in the temperature range 80–400 K. For SiO2, sputtered evaporated films 77% 55% bulk value, respectively, independent temperature. Similarly, is 63% TiO2.

Except for bone mineral, the body is shown to belong same water:fat:protein system as its soft tissues. Hence, an equation verified with a variety of freshly isolated tissues can be used estimate fat and so-called total tissue solids. On average, there are 0.784 kg water/kg weight less mineral fat. However, this water content probably fluctuates between extremes 0.816 0.752, in accordance time elapsing since imbibing much water. This causes density fat-free, mineral-free range from 1.050...

Boron–hydrogen bond insertion reactions of N-heterocyclic carbene (NHC) boranes and diazoesters can be catalyzed by NHC-boryl iodides produce stable α-NHC-boryl esters. The conditions the reaction resemble previous rhodium-catalyzed transformations (only catalyst is different); however, mechanisms two are probably very different. new boryl iodide method adept at producing α-substituted-α-NHC-boryl esters, this has led to a family esters with amino acid amino-acid-like side chains.

Relative reactivities of a series neutral ligated boranes L-BH3 (where L is NHC, amine, pyridine, or phosphine) and the cyanoborohydride anion have been assessed in Rh(II)-catalyzed B-H insertion reactions with methyl 2-phenyl-2-diazoacetate. Stable α-boryl ester products were isolated by flash chromatography all cases except for salt product from cyanoborohydride. All substrates either comparable to more reactive than 1,4-cyclohexadiene, which one most C-H reactions. The range reactivity...