scholarly journals Correction to “High Selectivities among Monovalent Cations in Dialysis through Cation-Exchange Membranes Coated with Polyelectrolyte Multilayers”

2021 ◽  
Author(s):  
Liu Yang ◽  
Chao Tang ◽  
Muhammad Ahmad ◽  
Andriy Yaroshchuk ◽  
Merlin Bruening
Keyword(s):  
Cation Exchange ◽  
Polyelectrolyte Multilayers ◽  
Monovalent Cations

scholarly journals High Selectivities among Monovalent Cations in Dialysis through Cation-Exchange Membranes Coated with Polyelectrolyte Multilayers

2018 ◽  
Vol 10 (50) ◽  
pp. 44134-44143 ◽  
Author(s):  
Liu Yang ◽  
Chao Tang ◽  
Muhammad Ahmad ◽  
Andriy Yaroshchuk ◽  
Merlin L. Bruening
Keyword(s):  
Cation Exchange ◽  
Polyelectrolyte Multilayers ◽  
Monovalent Cations

Cation exchange in cell walls of gram-positive bacteria

1976 ◽  
Vol 22 (7) ◽  
pp. 975-982 ◽  
Author(s):  
Robert E. Marquis ◽  
Kathleen Mayzel ◽  
Edwin L. Carstensen
Keyword(s):  
Cation Exchange ◽  
Cell Walls ◽  
Divalent Cations ◽  
Teichoic Acid ◽  
Dry Weight ◽  
High Ionic Strength ◽  
Monovalent Cations ◽  
Anionic Sites ◽  
Gram Positive Bacteria ◽  
Anionic Groups

The relative affinities of various cations for anionic sites in isolated, bacterial cell walls were assessed by means of a technique involving displacement of one cation by another. The affinity series determined was [Formula: see text]. High affinity was correlated with low mobility of the bound ions in an electric field. The net cation-exchange capacities of walls isolated from a variety of bacteria were estimated by preparing the magnesium forms of the walls, washing them well with deionized water to remove supernumerary ions, and then completely displacing the magnesium with Na+ or H+. Total amounts of magnesium displaced varied from 73 μmol per gram dry weight, for walls of the teichoic acid-deficient 52A5 strain of Staphylococcus aureus to about 520 μmol per gram for Bacillus megaterium KM walls. The amount of displacable magnesium was inversely related to the physical compactness of the walls, except for walls of Streptococcus mutans GS-5. It was found that magnesium or calcium ions can each neutralize, or pair with, two anionic groups in walls suspended in ion-deficient media. Previous work had indicated that these ions may pair with only one anionic group at high ionic strength. Therefore, it appeared that there is a great deal of flexibility in the arrangement of charged groups in the wall. It was concluded also that for cells growing in commonly used laboratory media, which generally contain large excesses of monovalent versus divalent cations, there is a mix of small, cationic counterions in the wall and that monovalent cations may predominate even though the wall has higher affinity for divalent ions.

Effects of monovalent cations on IAA- and FC-stimulated proton-cation exchange in pea stem segments

1976 ◽  
Vol 7 (3) ◽  
pp. 199-209 ◽  
Author(s):  
P. Lado ◽  
F. Rasi-Caldogno ◽  
R. Colombo ◽  
M.I. De Michelis ◽  
E. Marrè
Keyword(s):  
Cation Exchange ◽  
Monovalent Cations ◽  
Stem Segments

scholarly journals Highly selective separations of multivalent and monovalent cations in electrodialysis through Nafion membranes coated with polyelectrolyte multilayers

Polymer ◽  
2016 ◽  
Vol 103 ◽  
pp. 478-485 ◽  
Author(s):  
Nicholas White ◽  
Maria Misovich ◽  
Elena Alemayehu ◽  
Andriy Yaroshchuk ◽  
Merlin L. Bruening
Keyword(s):  
Polyelectrolyte Multilayers ◽  
Monovalent Cations ◽  
Nafion Membranes ◽  
Selective Separations

scholarly journals Modification of Cation-Exchange Membranes with Polyelectrolyte Multilayers to Tune Ion Selectivity in Capacitive Deionization

2020 ◽  
Vol 12 (31) ◽  
pp. 34746-34754 ◽  
Author(s):  
Sevil Sahin ◽  
Jouke E. Dykstra ◽  
Han Zuilhof ◽  
Rafael L. Zornitta ◽  
Louis C.P.M. de Smet
Keyword(s):  
Cation Exchange ◽  
Ion Selectivity ◽  
Polyelectrolyte Multilayers ◽  
Capacitive Deionization

Adsorption of polyelectrolyte multilayers imparts high monovalent/divalent cation selectivity to aliphatic polyamide cation-exchange membranes

2017 ◽  
Vol 537 ◽  
pp. 177-185 ◽  
Author(s):  
Yan Zhu ◽  
Muhammad Ahmad ◽  
Liu Yang ◽  
Maria Misovich ◽  
Andriy Yaroshchuk ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Divalent Cation ◽  
Polyelectrolyte Multilayers ◽  
Cation Selectivity ◽  
Aliphatic Polyamide

Cation-exchange behaviour of barium on dowex 50W-X8 separation from mixtures

1960 ◽  
Vol 23 ◽  
pp. 441-445 ◽  
Author(s):  
S KHOPKAR ◽  
A DE
Keyword(s):  
Cation Exchange ◽  
Exchange Behaviour

The Effect of Calcium and Magnesium on Rabbit Blood Platelet Aggregation in Vitro

1964 ◽  
Vol 12 (01) ◽  
pp. 179-200 ◽  
Author(s):  
Torstein Hovig
Keyword(s):  
Platelet Aggregation ◽  
Cation Exchange ◽  
Calcium Concentration ◽  
Blood Platelets ◽  
Blood Platelet ◽  
Rabbit Blood ◽  
Calcium And Magnesium ◽  
Induced Aggregation ◽  
Blood Platelet Aggregation

SummaryThe effect of calcium and magnesium on the aggregation of rabbit blood platelets in vitro was studied, with the following results:1. Platelet aggregation induced by ADP or collagen could be prevented by EGTA or EDTA. The aggregating effect was restored by recalcification. The effect was also restored by addition of magnesium in EDTA-PRP, but not in EGTA-PRP unless a surplus of calcium was present.2. Calcium remained in concentrations of the order of 0.15–0.25 mM after dialysis or cation exchange of plasma. Aggregation of washed platelets resuspended in such plasma could not be produced with ADP or collagen, unless the calcium concentration was increased or that magnesium was added.3. The adhesiveness of blood platelets to collagen was reduced in EGTA-PRP and EDTA-PRP. Release of ADP from platelets influenced by collagen could not be demonstrated either in EGTA-PRP (presence of magnesium) or in EDTA-PRP.4. It is concluded that calcium is a necessary factor both for the reaction leading to release of ADP and for the the aggregation produced by ADP.5. Thrombin induced aggregation of washed platelets suspended in tris-buffered saline in the presence of calcium. No effect of magnesium could be observed unless small quantities of calcium were present.

Hydrous oxides and their cation-exchange properties

1965 ◽  
Vol 15 (10) ◽  
pp. 445-448 ◽  
Author(s):  
C. Heitner-Wirguin ◽  
A. Albu-Yaron
Keyword(s):  
Cation Exchange ◽  
Hydrous Oxides ◽  
Exchange Properties
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