%0 Journal Article %T MEASURING THE DEGREE BLACK SURFACE BY COMPARISON RADIATIVE FLUX %A Nekrasov, A.S. %A Kuzmin, A.A. %A Romanov, N.N. %K comparison method, thermal radiation, radiation flow, thermal stability, emissivity, experimental installation %J Problems of risk management in the technosphere %D 2017 %N 2017 %P 6 %I Saint-Petersburg University of State Fire Service of Emercom of Russia