TY JOUR TI DEPENDENCE OF THE MEAN AND DISPERSION OF GRAIN WIDTH OF SILICON CARBIDE BLACK GRINDING POWDERS ON THE MESH SIZE OF A PASS SIEVE KW regional innovation system KW scientific and technological development KW “triple helix” concept KW innovation system KW business KW power KW higher education institution. JO Bulletin of Bryansk state technical university AU Petrukhina, N.. PY 2016 IS 2016 PB Bryansk State Technical University