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Cation Exchange - Crossref

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Last Updated: 10 January 2023

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Simultaneous Monitoring of Monoclonal Antibody Variants by Strong Cation-Exchange Chromatography Hyphenated to Mass Spectrometry to Assess Quality Attributes of Rituximab-Based Biotherapeutics

Here, we use an established SCX-MS method to identify and compare two rituximab-based biotherapeutics, the maker MabTherae's product Redituxu2122 and its Indian copy product Redituxu2122. The study examined molecular differences between the two drug samples in terms of C-terminal lysine variants, glycosylation patterns, and other common and acidic variants. Therae of galactosylated and sialylated glycoforms was evidently elevated in galactosylated and sialylated glycoforms, according to MabTherae's, while Redituxu2122 showed elevated amounts of oligomannose and afucosylated glycoforms, as well as a heightened number of oligosylated glycoforms. This report demonstrates the ability of this fast SCX-HPLC-MS system to compare different pharmaceutical samples and assess some of their quality characteristics.

Source link: https://doi.org/10.3390/ijms22169072


Organic-Inorganic Novel Green Cation Exchange Membranes for Direct Methanol Fuel Cells

Commercializing direct methanol fuel cells necessitates the development of cost-effective cation exchange membranes. Zirconium phosphate was obtained from the impregnation process and characterized by energy dispersive X-ray analysis, Fourier's transform infrared spectroscopy, and transmission electron microscopy, and then added as a bonding and doping agent into the polymer mixture in different proportions. In addition, the methanol permeability of the membranes was reduced with increasing zirconium phosphate content.

Source link: https://doi.org/10.3390/en14154686


A rice tonoplastic calcium exchanger, OsCCX2 mediates Ca2+/cation transport in yeast

Rice genome encoded four CCXs and only OsCCX2 transcript showed variable expression under abiotic stresses and Ca 2+ starvation conditions. The OsCCX2 localized to tonoplast and reduces the Ca 2+ sensitivity of K667 yeast mutants under elevated CaCl 2 conditions. In comparison to AtCCXs, OsCCX2-expressing yeast cells in Osck2, Li+, Fe 2+, Zn 2+, and Co 2+ show tolerance to excess Na +, Li +, Fe 2+, Zn 2+, and Co 2+, as well as divalent cations in yeast.

Source link: https://doi.org/10.1038/srep17117


Permethyl Cobaltocenium (Cp*2Co+) as an Ultra-Stable Cation for Polymer Hydroxide-Exchange Membranes

Here we offer the permethyl cobaltocenium [ 2 Co + or Cp * 2 Co + ] as ultra-stable organic cation for polymer HEMs. Compare to the parent cobaltocenium [2 Co + or Cp 2 Co + ], Cp * 2 Co + has significantly higher stability and basicity relative to its parent company. [ 2 Co + or Cp 2 Co + ], but Cp 2 Co + ], Cp 2 Co + ; Cp 2 Co + ] has a lot more durability and basicity. We demonstrated the possibility of covalently transferring Cp * 2 Co + cation to polymer backbone with polymer backbone and prepared Cp * 2 Co + -functionalized membranes as well as polysulfone. We used polysulfone as an example, and produced Cp * 2 Co + -functionalized membranes.

Source link: https://doi.org/10.1038/srep11668


Atomistic understanding of cation exchange in PbS nanocrystals using simulations with pseudoligands

In simulations, interactions of cations with ligands and solvent molecules are largely ignored. PbS nanocrystal exchange reveals a good deal with experimental results on the cation exchange of PbS nanocrystals, in which Pb ions are partially replaced by Cd ions from solution. Pb ions are kicked out by exchanged Cd interstitials and migrate through interstitial sites, aided by local restrictions at core and point defects, according to our simulations. At elevated temperatures, we also predict that high-pressure environments promote significantly enhanced cation exchange reactions.

Source link: https://doi.org/10.1038/ncomms11503


Multicolour synthesis in lanthanide-doped nanocrystals through cation exchange in water

Abstract: The rise in demand for lanthanide-doped luminescent nanocrystals in a variety of fields depends on the design of a robust synthetic protocol that allows rapid, just-in-time nanocrystal preparation. The luminescence characteristics of the nanocrystal template can be easily adjusted by mixing the process of cation exchange with energy migration, preserving the original nanocrystal template's size, morphology, and crystal phase.

Source link: https://doi.org/10.1038/ncomms13059


Measurement of Cation Exchange Capacity (CEC) of Plant Cell Walls by X-Ray Microanalysis (EDX) in the Transmission Electron Microscope

The number of certain negative charges of plant cell walls is a significant measure in studies investigating plant tissue uptake of ions, particularly in roots. Differences in the CEC of various tissue species are masked by traditional methods of determination, general tissue analysis, bulk tissue, the results are the mean of many cells, and various tissue types' CECs are determined. To remove exchangeable cations, the gun and fine root tissue of Picea abies was acid washed. pH 4. 0, tissue blocks or semithin tissue sections were loaded with 0. 2 mM CaCl 2, AlCl 3, or Pb 2 in tissue blocks or semithin tissue sections. The binding capacity was evidently higher for Al than for Ca in most P. abies shoot tissues, although Ca was higher for Ca.

Source link: https://doi.org/10.1017/s1431927607070420


Investigating the Performance of a Zinc Oxide Impregnated Polyvinyl Alcohol-Based Low-Cost Cation Exchange Membrane in Microbial Fuel Cells

In a single chambered microbial fuel cell, the current research examined the manufacturing and application of lithium –doped zinc oxide-impregnated polyvinyl alcohol proton exchange membrane separator. A higher power generation in MFC was demonstrated by PVA-ZnO-Li with 2. 0% Li incorporation, which resulted in higher power generation in MFC. The effect of oxygen crossing on the membrane cathode assembly area was investigated using coulombic efficiency and current density. When acetate wastewater was treated in MFC with a PVA-ZnO-Li-based MCA, the maximum power density of 6. 3 W/m3 was achieved.

Source link: https://doi.org/10.3390/membranes13010055


Boosting Zn||I2 Battery’s Performance by Coating a Zeolite-Based Cation-Exchange Protecting Layer

Highlights From coating zeolite protecting layers, High-performance Zn||I2 batteries were established. Abstract The intrinsically safe Zn||I2 battery, one of the most popular options for replacement traditional Pb-acid batteries, is also suffering from short shelf and cycling life due to the uncontrolled I 3 u2212 shuttling and complex parasitic reactions on Zn anodes. Given the fact that almost all these harmful processes end on Zn anodes' surfaces, upgrading Zn anodesu2019 surface with protecting layers would be one of the most simple and effective ways to restrain these processes. While blocking anions and electrolyte from passing through, the negatively charged cavities in the zeolite lattice make migration channels for Zn 2+ highly available. This low-cost cation-exchange security layer can prevent self-discharge, anode corrosion/passivation, and Zn dendrite growth, while also reducing Zn||I 2 batteries's streamlined life, high coulombic efficiency, and large capacity.

Source link: https://doi.org/10.1007/s40820-022-00825-5

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions