01205nam0 2200361 450 00001431120090323173106.020080715d1970----km-y0itay50------baitafreITy-------001yyMetodologia della ricerca sociologicaRaymond BoudonBolognaIl Mulino1970118 p.22 cm<<La >>nuova scienzafondamenti di sociologiaTrad. G. Sani.Ed. italiana a cura di M. Barbagli, A. Parisi.2001<<La >>nuova scienza<<Les >>méthodes en sociologie<in italiano>17245SociologiaRicercheMetodoSociologiaMetodi30117Sociologia301.07219Sociologia e antropologia. Ricerca30121Sociologia e antropologiaBoudon,Raymond45188Barbagli,Marzio070Sani,Giacomo070Parisi,Arturo M. L.070ITUNIPARTHENOPE20080715RICAUNIMARC000014311220/17CNR-612/LNAVA2Methodes en sociologie17245UNIPARTHENOPE02254nam 2200373 450 991013639570332120231206214256.01-5044-0389-410.1109/IEEESTD.1955.7430213(CKB)3710000000613087(NjHacI)993710000000613087(EXLCZ)99371000000061308720231206d1955 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierIEEE Std No 54-1955 IEEE Standard, Test Code, and Recommended Practice for Induction and Dielectric Heating Equipment /Institute of Electrical and Electronics EngineersPiscataway, NJ, USA :IEEE,1955.1 online resource (24 pages)High-frequency heating equipments divide into two main types: (1) those used for dielectric heating, and(2) those used for induction heating. The induction heating equipments again divide into seven types: (1) commercial power line; (2) rotary generator; (3) mercury-arc-converter; (4) gaseous-tube converter; (5) mercury-hydrogen-spark-gap converter; (6) quenched spark-gap converter; (7) vacuum-tube generator. Dielectric heating equipments in general use a vacuum-tube oscillator as a source of radio-frequency power ranging in frequency from 2 megacycles to hundreds of megacycles. At frequencies above about 200 megacycles,the power is generated by devices other than a conventional vacuum tube, such as a magnetron, Klystron or other microwave device. A dielectric heating generator is normally a high-voltage generator, and application requires high-voltage radio-frequency matching techniques. An induction heating generator is essentially a high-current device operating into very low impedance circuits and sometimes requires transformation in the load circuit to provide the desired heating effect.IEEE Std No 54-1955Electric heatingInduction heatingElectric heating.Induction heating.697.045NjHacINjHaclDOCUMENT9910136395703321IEEE Std No 54-19553646328UNINA