Sodium-potassium interdiffusion in potassium-rich alkali feldspar I: Full diffusivity tensor at 850 C
نویسندگان
چکیده
منابع مشابه
Lattice strain across Na–K interdiffusion fronts in alkali feldspar: an electron back-scatter diffraction study
Cation exchange experiments between gem quality sanidine [Formula: see text] and KCl melt produced chemical alteration of alkali feldspar starting at the grain surface and propagating inwards by highly anisotropic Na-K interdiffusion on the alkali sublattice. Diffusion fronts developing in b-direction are very sharp, while diffusion fronts within the a-c-plane are comparatively broad. Due to th...
متن کاملSodium-potassium-chloride cotransport.
Obligatory, coupled cotransport of Na(+), K(+), and Cl(-) by cell membranes has been reported in nearly every animal cell type. This review examines the current status of our knowledge about this ion transport mechanism. Two isoforms of the Na(+)-K(+)-Cl(-) cotransporter (NKCC) protein (approximately 120-130 kDa, unglycosylated) are currently known. One isoform (NKCC2) has at least three altern...
متن کاملActive Sodium and Potassium Transport in High Potassium and Low Potassium Sheep Red Cells
The kinetic characteristics of the ouabain-sensitive (Na + K) transport system (pump) of high potassium (HK) and low potassium (LK) sheep red cells have been investigated. In sodium medium, the curve relating pump rate to external K is sigmoid with half maximal stimulation (K(1/2)) occurring at 3 mM for both cell types, the maximum pump rate in HK cells being about four times that in LK cells. ...
متن کاملSodium and potassium regulate endothelial phospholipase C-γ and Bmx.
The amount of Na(+) and K(+) in the diet promotes significant changes in endothelial cell function. In the present study, a series of in vitro and in vivo experiments determined the role of Na(+) and K(+) in the regulation of two pleckstrin homology domain-containing intracellular signaling molecules, phospholipase C (PLC)-γ1 and epithelial and endothelial tyrosine kinase/bone marrow tyrosine k...
متن کاملSodium potassium hydrogen citrate, NaKHC6H5O7
The crystal structure of sodium potassium hydrogen citrate has been solved and refined using laboratory X-ray powder diffraction data, and optimized using density functional theory techniques. The Na(+) cation is six-coordinate, with a bond-valence sum of 1.17. The K(+) cation is also six-coordinate, with a bond-valence sum of 1.08. The distorted [NaO6] octahedra share edges, forming chains alo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: American Journal of Science
سال: 2014
ISSN: 0002-9599
DOI: 10.2475/09.2014.02