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Cobalamin/Vitamin B12 (Cbl) is an essential vitamin, supplied mainly as hydroxocobalamin (OHCbl) by animal products, including cows' milk. Cyanocobalamin (CNCbl) is the usual form in vitamin pills. The aim was to explore absorption and tissue accumulation of two Cbl forms, administered alone or bound to milk protein.We synthesized labeled OH[57Co]Cbl from commercially available CN[57Co]Cbl. Recombinant...
The intention of this paper is to investigate the residual polarization in PVDF and its interrelation with pyroelectricity by comparing simultaneously measured pyroelectric and fractional thermally stimulated current (TSDC) currents and to clarify the role of charges in these processes.
Sandwich structures consisting of porous PTFE films clamped between two FEP Teflon films show large quasi- static piezoelectric coefficients due to high residual polarization formed by breakdown charges trapped at the interfaces between the two dielectrics. At the same time, the stability of polarization and the piezocoefficient is limited by rather high mobility of positive charges in FEP films....
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