Ostafiichuk B. K. UkraineIvano-Frankovsk Carpathian National University of V. Stefanik, 57, Shevchenko St., Ivano-Frankovsk, 76025 Author's articles Property modification of activated carbon used in capacitor рroduction Effect of Laser Irradiation on Electrochemical Activity TiO2 Dielectric qualities of lithium iron spineless doped by ion Mg+ on basis of impedance temperature researches