00865nam a2200253 i 450099100023833970753620020509164034.0000220s1976 it ||| | ita b11329889-39ule_instPARLA204562ExLDip.to Filosofiaita370.1931Borghi, Lamberto24611Scuola e comunità /Lamberto BorghiFirenze :La nuova Italia,1976XIII, 363 p. ;20 cmEducatori antichi e moderni ;186Scuola e società.b1132988901-03-1701-07-02991000238339707536LE005IF XL C 3912005000256363le005-E0.00-l- 01210.i1150287301-07-02Scuola e comunità274811UNISALENTOle00501-01-00ma -itait 0101799nam 2200481Ia 450 991069725700332120230902161853.0(CKB)5470000002386352(OCoLC)664148715(EXLCZ)99547000000238635220100915d2006 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierAssessments of mechanical and life limiting properties of two candidate silicon nitrides for stirling convertor heater head applications[electronic resource] /Sung R. Choi, David L. KrauseCleveland, Ohio :National Aeronautics and Space Administration, Glenn Research Center,[2006]1 online resource (18 pages) illustrationsNASA TM- ;2006-214089Title from title screen (viewed on Sept. 15, 2010)."January 2006."Includes bibliographical references (pages 16-18).NASA technical memorandum ;2006-214089.Mechanical propertiesnasatSilicon nitridesnasatHeatersnasatStirling cyclenasatLife (durability)nasatMechanical properties.Silicon nitrides.Heaters.Stirling cycle.Life (durability)Choi Sung R912845Krause David L1406107NASA Glenn Research Center.GPOGPOBOOK9910697257003321Assessments of mechanical and life limiting properties of two candidate silicon nitrides for stirling convertor heater head applications3489614UNINA