It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope O-17 (Oxygen, atomic number Z = 8, mass number A = 17). Landolt-Brnstein Homepage Introduction Index...
where gi and gj are the statistical weights of the two levels involved, nj is the atom number density of the lower level-j (at the center of the plasma), Tg is the gas temperature, M is the atomic mass, and R is the gas constant. The effective branching fraction now becomes (16)...
At 46 percent of the mass, oxygen is the most plentiful element inEarth’scrust. The proportion of oxygen by volume in the atmosphere is 21 percent and by weight inseawateris 89 percent. In rocks, it is combined with metals and nonmetals in the form of oxides that are acidic (such as...
[112,113]. Due to the synergistic between oxygen vacancies andLDHnanosheets, Ni-based LDH@ZIF-67-VO/NF catalysts show higher specific surface area and abundant active sites. Therefore, NiCo-LDHs@ZIF-67-VO/NF nanostructures can provide easy mass diffusion and rapid charge transfer, thus ...
Giauque WF, Johnston HL (1929a) An isotope of oxygen of mass 17 in the Earth’s atmosphere. Nature 123:831GIAUQUE, W.F. and JOHNSTONE, H.L. (1926b) An isotope of oxygen of Mass 17 in the Earth's atmosphere. Nature, London, v.123, p.831....
Pure gases (Westfalen 5.0) were dosed into the quartz tube reactor by individual mass-flow controllers (Bronckhorst). Images of the catalyst surface were acquired every 17.5 s with the large field detector of the ESEM at acceleration voltages of 7.5–10 kV and a chamber pressure of 16...
[17,18,19]. A regenerative fuel cell which operates in two modes of hydrogen production (electrolyzer cell mode) and power production (fuel cell mode) is able to provide an economical means for efficient long-term energy storage and on-demand conversion back to electrical energy only with the...
Application of mass and energy balance regularities in fermentation (p1595-1621) Material and energy balances for fermentation processes are developed based on the facts that the heat of reaction per electron transferred to oxygen for a wide variety of organic molecules, the number of available elect...
A C12A7 single crystal heated in 40% 17O-enriched gas showed the hyperfine splitting due to a 17O3− nucleus. This fact clearly indicates that O3− is formed via the reaction of an O2 molecule in the atmosphere with a free oxygen ion as given by Eq. (1.1). The angular variations...
Negative ions of cometary origin have been detected in the coma of comet 1P/Halley, though without sufficient mass resolution to distinguish individual ions25. Three broad peaks were observed, which were denoted as the 17-, 30- and 100-a.m.u. peaks. Chaizy et al.24 argued that the ...