00692nam0 2200229 450 00001385920180518120354.020080701d1912----km-y0itay50------bagerDEaf------001yyLehrbuch der sphärischen Astronomievon L. de BallLeipzigW. Engelmann1912xv, 387 p., [2] c. di tav.ill.29 cmAstronomia sfericaDidattica520.219Ball,L. : de631640ITUNIPARTHENOPE20080701RICAUNIMARC000013859520.2/1079404PISTLehrbuch der sphärischen Astronomie1203235UNIPARTHENOPE01698nam 2200505Ia 450 991069693590332120230902161912.0(CKB)5470000002383534(OCoLC)637174598(EXLCZ)99547000000238353420100604d2009 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierSimulated tip rub testing of low-density metal foam[electronic resource] /Cheryl L. Bowman, Michael G. JonesCleveland, Ohio :National Aeronautics and Space Administration, Glenn Research Center,[2009]1 online resource (41 pages) illustrationsNASA TM- ;2009-215818Title from title screen (viewed on June 3, 2010)."December 2009."Includes bibliographical references (page 14).NASA technical memorandum ;2009-215818.Metal foamsnasatPorositynasatAcoustic attenuationnasatAcoustic propertiesnasatAbsorption spectranasatDurabilitynasatMetal foams.Porosity.Acoustic attenuation.Acoustic properties.Absorption spectra.Durability.Bowman Cheryl L1390435Jones Michael G76135NASA Glenn Research Center.GPOGPOBOOK9910696935903321Simulated tip rub testing of low-density metal foam3451477UNINA