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pro vyhledávání: '"Wan-Sang Kim"'
Publikováno v:
Journal of The Korean Society of Civil Engineers. 33:1143-1151
Reasonable methods are needed to predict the noise level of new/existing roads and to select means of noise reduction. In this study, the noise reduction effects of both soundproof walls and quiet pavements were predicted. The noise reduction effects
Publikováno v:
Molecular Crystals and Liquid Crystals. 464:93/[675]-101/[683]
We synthesized 25,26,27,28-tetrakis(mercaptobuthoxy)-5,11,17,23-[2,2′-thioxy(o-phenylene)thioxy-piperidino]calix[4]arene [1], 25,26,27,28-tetrakis(mercaptobuthoxy)-5,11,17,23-[2,2′-thioxy(o-phenylene)thioxy-amino]calix[4]arene [2] and 25,26,27,28