Showing papers on "Sodium metavanadate published in 1999"
TL;DR: In vitro metavanadate exposure regulates two distinct, yet related intracellular signaling pathways important in initiating inflammatory responses in these cells: activation of the NADPH oxidase complex with subsequent increased ROI synthesis, and (2) enhanced tyrosine phosphorylation of cellular proteins.
40 citations
TL;DR: Potassium sodium metavanadate, KNa(VO3)2, crystallizes with the pyroxene structure and is made up of VO4 tetrahedral chains, NaO6 octahedra and KO8 dodecahedra.
Abstract: Potassium sodium metavanadate, KNa(V03)2, crystallizes with the pyroxene structure and is made up of V04 tetrahedral chains, NaO 6 octahedra and KO 8 dodecahedra. The chains of corner-sharing V04 tetrahedra are crosslinked through the NaO 6 octahedra and KO 8 dodecahedra to form a three-dimensional structure with the K + and Na + cations, which lie on twofold axes, situated in the void space. The coordination around the Na + ion is close to normal octahedral, while the O atoms coordinated to the K + ion are arranged approximately in a dodecahedral fashion.
4 citations
Journal Article•
3 citations
TL;DR: In this paper, the authors measured the effect of sintered discs on DC conduction in the temperature range 150 −450°C and calculated the activation energy of the dipoles involved in relaxation.
Abstract: Impedance of sintered discs of 0·1, 0·25, 0·4 mol% of sodium metavanadate was measured in the frequency range 10 kHz-1 MHz and in the temperature region from room temperature (=30°C) to 450°C. AC conductivity was calculated from the data. DC conductivity was measured in the temperature range 150–450°C. Debye type of relaxation effects were observed in the dielectric loss. The activation energy of the dipoles involved in relaxation was estimated. The activation energy for AC conduction in the temperature above 380°C was calculated. These values are larger than the activation energy of pure sodium metavanadate sample. The relaxation phenomenon observed is explained.