An example of this is the separation of the modification product of serine (Ser) from ethanolamine (Etn) where the decrease in the pH in the feed compartment leads to a decrease in the product purity due to co-transport of alanine (Ala), that becomes charged at low pH.
In addition, at non-physiological pH, collagen molecules become charged as well.
The atmosphere becomes charged with importance.
The surface of ZnO became positively charged at a pH lower than pHzpc; however, a negative charge is expected when the pH is higher than pHzpc.
Thus, the surface of the catalyst becomes positively charged at lower pH, but at higher pH, it becomes negatively charged.
These sites become negatively charged at pH values above approximately 5, depending on the provenance of the kaolinite, and become positively charged at lower pH values, thus conferring an anion exchange capacity to these soils.
The issue has become politically charged at the start of party primaries ahead of next year's presidential election in France, with several leaders on the right and far-right calling for a law prohibiting the full-body swimming costume worn by some Muslim women.
The reason for this decrease in capacity is that the HSA molecules become negatively charged at higher pH values (above the isoelectric point), and the ligands on the polymer are also negatively charged.
While the deputies waited, the dog became loose and charged at the deputies a second time.
Following both environmental or acidic degradation in water, the NB surface becomes less negatively charged at physiological pH than the initial NB (zeta potential −28 ± 2 mV and −19 ± 2 mV for NB-DL and NB-DA, respectively, compared to −45 mV for NB).
