Praseodymium and copper cation-exchange capacities of neutral-detergent fibres relative to composition and fermentation kinetics

1986 ◽  
Vol 37 (7) ◽  
pp. 666-672 ◽  
Author(s):  
Michael I. McBurney ◽  
Michael S. Allen ◽  
Peter J. Van Soest
Keyword(s):  
Cation Exchange ◽  
Copper Cation ◽  
Fermentation Kinetics

scholarly journals Mechanistic insight into copper cation exchange in cadmium selenide semiconductor nanocrystals using X-ray absorption spectroscopy

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Alex Khammang ◽  
Joshua T. Wright ◽  
Robert W. Meulenberg
Keyword(s):  
Cation Exchange ◽  
Absorption Spectroscopy ◽  
Cooperative Behavior ◽  
Semiconductor Nanocrystals ◽  
Copper Cation ◽  
Energy Materials ◽  
X Ray ◽  
Data Points ◽  
X Ray Absorption

AbstractIn terms of producing new advances in sustainable nanomaterials, cation exchange (CE) of post-processed colloidal nanocrystals (NCs) has opened new avenues towards producing non-toxic energy materials via simple chemical techniques. The main processes governing CE can be explained by considering hard/soft acid/base theory, but the detailed mechanism of CE, however, has been debated and has been attributed to both diffusion and vacancy processes. In this work, we have performed in situ x-ray absorption spectroscopy to further understand the mechanism of the CE of copper in solution phase CdSe NCs. The x-ray data indicates clear isosbestic points, suggestive of cooperative behavior as previously observed via optical spectroscopy. Examination of the extended x-ray absorption fine structure data points to the observation of interstitial impurities during the initial stages of CE, suggesting the diffusion process is the fundamental mechanism of CE in this system.

Cation exchange capacity, cell wall composition and fermentation kinetics in forages

1994 ◽  
Vol 39 (1) ◽  
pp. 101-104
Author(s):  
E. Salimei ◽  
P.J. Van Soest ◽  
B.I. Giner Chavez ◽  
O. Pedron ◽  
V. Dell'Orto ◽  
...  
Keyword(s):  
Cell Wall ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Cell Wall Composition ◽  
Fermentation Kinetics

First-Principles Comparison of Proton and Divalent Copper Cation Exchange Energy Landscapes in SSZ-13 Zeolite

2018 ◽  
Vol 122 (41) ◽  
pp. 23564-23573 ◽  
Author(s):  
Sichi Li ◽  
Hui Li ◽  
Rajamani Gounder ◽  
Anthony Debellis ◽  
Imke B. Müller ◽  
...  
Keyword(s):  
Cation Exchange ◽  
First Principles ◽  
Copper Cation ◽  
Exchange Energy ◽  
Energy Landscapes ◽  
Divalent Copper

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

The Temperature and Counter-ion Dependency of Cation Exchange Equilibria

1960 ◽  
Vol 25 (1_2) ◽  
pp. 81-89 ◽  
Author(s):  
O. D. Bonner ◽  
G. Dickel ◽  
H. Brümmer
Keyword(s):  
Cation Exchange ◽  
Counter Ion
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