background: in this study we have prepared the iga solution from normal human plasma using plasma fractionation and ion exchange chromatography. materials and methods: using fractionation of plasma with cold ethanol (starting with 8% ethanol), fraction iii was prepared as a suitable source for iga preparation. then it was treated with caprylic acid for separation of impurities. for enrichment o...

The mixed-anion fluorosulfide Yb3F4S2 was examined as a solid electrolyte for all-solid-state fluoride-ion batteries. synthesized compound by solid-state reaction under vacuum contained Yb2O2S impurities, which originated from the starting materials. conduction properties of are discussed herein based on electrochemical impedance and DC blocking measurements, indicate mixed ionic electrical Yb3...

Aseries of uni- and multidimensional variants of the dipolar exchange-assisted recoupling (DEAR) NMR experiment is described and applied to determinations of (13)C-(14)N dipolar local field spectra in amino acids and dipeptides. The DEAR protocol recouples nearby nuclei by relying on differences in their relative rates of longitudinal relaxation, and has the potential to give quantitative geome...

Abstract The possibility to co‐intercalate sodium ions together with various glymes in graphite enables its use as a negative electrode material sodium‐ion batteries (SIBs). However, the storage mechanism and local interactions appearing during this reaction still needs further clarification. 1 H, 13 C 23 Na ex situ solid‐state NMR (ss‐NMR) experiments are performed obtain insights into dependi...

Two model compounds, lithium imidazolium (LiIm) and lithium 2-undecylimidazolium (und-LiIm), were synthesized. These materials are chosen as models of potential lithium ion conductors for use as electrolytes in lithium batteries. Solid-state NMR was used to provide information on the microscopic interactions including ionic mobility and ring reorientations which govern the efficiency of conduct...

Crystalline complexes of S-tert-butylisothiuronium perchlorate ( t-BuSC(NH2),C104) and 18-crown-6 (18C6) and 1,3-xylyl-18-crown-5 (1,3X18C5) with a 1:l stoichiometry were obtained via extraction. X-ray diffraction analysis showed that in the solid state the guest molecule is coordinated via one of the two NH, groups to the crown ether. The second NH2 group is bound to the anion. 'H NMR spectros...