TY JOUR TI ULTRASONIC PROCESSING IMPACT UPON DETERGENT FOAM FIRMNESS KW washing KW pollution KW detergent KW ultrasound KW foam JO Bulletin of Bryansk state technical university AU Dem'yanushko, I.V. AU Luzhnov, Y.M. AU Karcov, S.K. AU Suhov, A.V. AU Kramarenko, A.Y. PY 2019 IS 2019 PB Bryansk State Technical University