Selective ion separation via capacitive deionization (CDI) is of relevance because its environmental and industrial applications in water purification softening, heavy metal removal, resource recovery. Conventionally, carbon electrodes ion-selective membranes have been used for selective removal anions cations. In this study, we engineered a CDI cell with two identical NiHCF electrodes, separat...

The effects of monovalent cations on calcium uptake by fragmented sarcoplasmic reticulum have been clarified. Homogenization of muscle tissue in salt-containing solutions leads to contamination of this subcellular fraction with actomyosin and mitochondrial membranes. When, in addition, inorganic cations are contributed by the microsomal suspension and in association with nucleotide triphosphate...

p‘ MANGOS, JOHN A., AND NONA K. MCSHERRY. Micropuncture study of excretion of water and electrolytes by the pancreas. Am. J. Physiol. 22 l(2) : 496-503. 197 l.‘I’he monovalent ionic composition of the primary secretory (acinar) fluid and the transductal fluxes of monovalent ions and water in the duct system of the rat and rabbit pancreas were investigated by using micropuncture and microanalyti...

Yeast cells deficient in the transcriptional activator Imp2p are viable, but display marked hypersensitivity to a variety of oxidative agents. We now report that imp2 null mutants are also extremely sensitive to elevated levels of the monovalent ions, Na+ and Li+, as well as to the divalent ions Ca2+, Mn2+, Zn2+, and Cu2+, but not to Cd2+, Mg2+, Co2+, Ni2+, and Fe2+, as compared to the parent s...

Corrcspondence/Reprint request: Dr. Ferenc Horkay, Ph.D .. Section oo Tissue Biophysics and Biomimetics, National Institutes of Health, Bldg. 13, Room 3WJ6B, 13 South Drive, Bethcsda, MD 20892, USA.E-mail:[email protected] Abstract The effect of cations on the osmotic properties of chemically cross-linked sodium polyacrylate hydrogels has been investigated. The variation of the osmotic swell...

Phospholipid bilayer membranes were bathed in a decimolar solution of monovalent ions, and the conductance produced by neutral carriers of these monovalent cations and anions was used to assess the electric potential at the surface of the membrane. When the bilayers were formed from a neutral lipid, phosphatidylethanolamine, the addition of alkaline earth cations produced no detectable surface ...

Both calcium and caffeine induced calcium release from actively loaded heavy sarcoplasmic reticulum vesicles were studied to analyze the dependence of both activities on the composition of the release medium with respect to monovalent anions. Calcium is unable to induce net calcium release while caffeine remains effective as releasing agent when the experimental media contain neither chloride n...

A theoretical model of polyelectrolyte gels is presented to study continuous and discontinuous volume phase transitions induced by changing salt concentration in the external solution. Phase diagrams are constructed in terms of the polymer–solvent interaction parameters, external salt concentration, and concentration of fixed charges. Comparisons with previous experiments for an ionized acrylam...