Nonlithium metals such as sodium have attracted wide attention as a potential charge carrying ion for rechargeable batteries. Using in situ transmission electron microscopy in combination with density functional theory calculations, we probed the structural and chemical evolution of SnO2 nanowire anodes in Na-ion batteries and compared them quantitatively with results from Li-ion batteries (Hua...

Colchiceine complexes with Li+, Na+ and K+ cations have been synthesized and studied by 1H and 13C NMR, FT-IR, FAB MS and UV-Vis. It has been shown that colchiceine forms stable complexes especially with lithium cation and the most stable structures of the complexes are those in which the acetamide groups are involved in the coordination process. The structures of the colchiceine complexes with...

The effects of external alkali metal ions on the rate of ouabain binding and on the rate of the Na-K pump were examined in human red blood cells. In Na-containing solutions, K, Cs, and Li decreased the rate of ouabain binding. For K and Cs, the kinetics of this effect were similar to those for their activation of the pump. In Na-free (choline-substituted) solutions the rate of ouabain binding w...

A B S TRAC T The cation selectivity of the Na entry mechanism located in the outer membrane of the bullfrog (Rana catesbeiana) skin epithelium was studied. This selectivity was determined by measuring the short-circuit current when all of the external sodium was replaced by another cation and, also, by noting the relative degree of inhibition that the alkali metal cations produced on Na influx....

We present the positronium formation cross sections for a positron colliding with lithium and sodium for the collision energies from 0.01 eV up to 20 eV by the hyperspherical close-coupling method. For Li, our results agree with the experimental data and with other calculations. Our results for Na remain in agreement with previous close-coupling calculations, but do not support the latest exper...

Encouraged by our previous theoretical results that indicated the stabilization of the HeO unit inside the ferroelectric cavity composed of two parallel LiF dipoles, we have now undertaken the theoretical study for the related noble gas systems, (NgO)(MF)2, Ng = Ar, Kr, Xe, M = Li, Na, K. The computational results indicate that all such molecules constitute local minima, which are protected by ...

The ability of single grain boundaries in YBa2Cu3Ox bicrystalline rings to carry electrical current is found to be significantly enhanced under hydrostatic pressure. Nearly hydrostatic pressures are applied to the alkali metals Li, Na, and K. in a search for superconductivity. Whereas Li becomes superconducting above 20 GPa at temperatures as high as 15 K, no superconductivity was observed abov...

The octaoligoisonucleotide (isoT)2(isoG)4(isoT)2 (I), consisting of isonucleoside units 6'-O-allyl-4'-deoxy-4'-(nucleobase)-2',5'-anhydro-L-mannitol, was synthesized by the phosphotriester approach in solution phase. Based on CD spectra and capillary electrophoresis, it was confirmed that iso-oligomer I could form a parallel intermolecular G-quadruplex structure. K+, Na+ and Li+ can prompt the ...

The original version of this Article contained an error in the order of the authors, where “Xinmei Kang, Ximing Guo, Xingjian Niu, Weiwei An, Suhan Li, Zhaoliang Liu, Yue Yang, Na Wang, Qicheng Jiang, Caichuan Yan, Hui Wang and Qingyuan Zhang” was incorrectly given as “Xinmei Kang, Ximing Guo, Weiwei An, Xingjian Niu, Suhan Li, Zhaoliang Liu, Yue Yang, Na Wang, Qicheng Jiang, Caichuan Yan, Hui ...

A B ST R A C T The effects o f external alkali metal ions on the rate of ouabain binding and on the rate of the Na-K pump were examined in human red blood cells. In Na-containing solutions, K, Cs, and Li decreased the rate of ouabain binding. For K and Cs, the kinetics of this effect were similar to those for their activation of the pump. In Na-free (choline-substituted) solutions the rate of o...