Szukana fraza: [Abstrakt = "Complex research of structural and electrokinetic characteristics of nano\- and the ultraporous glasses prepared from sodium borosilicate \(SBG\) glass DV1\-Sh in KCl background solutions of various concentrations in a wide pH range has been performed. It is shown that for ultraporous membranes with the sizes of porous channels r in the range 10–70 nm appreciable electroosmotic flows and a good agreement of electrokinetic potential values determined by three different methods are observed. It is established that for nanoporous \(r < 10 nm\) glass membranes change of electroosmotic flow velocity with time is due to the development of concentration polarization."]