A low temperature study of electromagnetic energy loss in low-loss materials in the 110…140 MHz frequency range HiзьkoTenпepaTypнe дocлiджeннya вTpaT eлekTponagнiTнoї eнepgiї в cлaбoпogлiнaючix naTepiaлax y дiaпaзoнi чacToT 110…140 DDц