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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Levizzari, Riccardo;

    Il report presenta gli elementi utili per la pianificazione dello studio della Zona Non Satura (ZNS), nel contesto delle analisi di sicurezza per il futuro Deposito Nazionale per i rifiuti radioattivi.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ENEA Open Archive
    Other ORP type . 2017
    Data sources: ENEA Open Archive
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      ENEA Open Archive
      Other ORP type . 2017
      Data sources: ENEA Open Archive
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ENEA Open Archive
    Other ORP type . 2012
    Data sources: ENEA Open Archive
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      ENEA Open Archive
      Other ORP type . 2012
      Data sources: ENEA Open Archive
  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Rizzo, Antonietta; Piccoli, Angela;

    Il presente documento riassume gli aspetti rilevanti emersi durante la partecipazione ai lavori del WGB-40 del CTBTO, tenutosi a Vienna dal 18 Marzo al 5 Aprile 2013.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ENEA Open Archive
    Other ORP type . 2013
    Data sources: ENEA Open Archive
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    ENEA Open Archive
    Other ORP type . 2013
    Data sources: ENEA Open Archive
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      ENEA Open Archive
      Other ORP type . 2013
      Data sources: ENEA Open Archive
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      ENEA Open Archive
      Other ORP type . 2013
      Data sources: ENEA Open Archive
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Murra, D.; Aquilini, M.; Bollanti, S.; Di Lazzaro, P.; +4 Authors

    Le lunghezze d’onda comprese tra 200 e 280 nanometri, intervallo spettrale denominato UV-C, sono particolarmente adatte a debellare batteri e virus in quanto tale radiazione spezza i legami proteici e può danneggiare in modo irreversibile le catene del DNA/RNA. Sino a poco tempo fa, le sorgenti UV-C disponibili in commercio erano lampade a gas, basate tipicamente su deuterio, xenon, vapori di mercurio, o eccimeri. Queste lampade funzionano a tensioni piuttosto elevate, sono fragili e hanno tempi di accensione di diversi minuti prima di arrivare a regime ed emettere la potenza nominale. La disponibilità di LED (Light Emitting Diodes, dispositivi a stato solido) che emettono radiazione nell’intervallo dell’UV-C consente oggi di realizzare una “lampada”, basata su una matrice di tali sorgenti, che utilizza un alimentatore a bassa tensione, può essere disegnata in configurazioni geometriche adattabili ad ogni esigenza, si accende istantaneamente ed è meccanicamente molto robusta. In questo Rapporto Tecnico sono illustrati il progetto, la realizzazione e la caratterizzazione di una lampada a LED UV-C e del relativo alimentatore. È inoltre brevemente descritto un esperimento, a scopo fitosanitario, in cui tale lampada è stata utilizzata. Optical radiation with wavelengths between 200 and 280 nanometers, in the UV-C range, is particularly suitable for eradicating bacteria and viruses, as this radiation breaks protein bonds and can irreversibly damage DNA/RNA chains. Until recently, the commercial UV-C sources were gas lamps, typically based on deuterium, xenon, mercury vapor, or excimers. All of these lamps operate at quite high voltages, are fragile and require several minutes of warming up before working at full power. The availability of solid-state LEDs (Light Emitting Diodes) that emit radiation in the UV-C range allows a “lamp” to be made by assembling an array of such light sources, which uses a low-voltage power supply, can be designed in geometric configurations adaptable to any need, turns on/off instantly and is robust. This Technical Report illustrates the work done at ENEA Frascati on the design and assembly of a UVC LED lamp and of its power supply, its characterization and application to a phytosanitary experiment.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Chierici, R.; Di Gregorio, A.; Provaroni, R.; Meloni, C.; +5 Authors

    Lumière è un Progetto sviluppato da ENEA con l’obiettivo di promuovere l’efficienza energetica nel settore dell’illuminazione pubblica al fine di razionalizzarne e ridurne i consumi di energia elettrica e, conseguentemente, contenerne le emissioni di CO2 in atmosfera. Dedicato ed indirizzato principalmente ai Comuni italiani, nelle persone dei loro sindaci e pubblici amministratori, punta al miglioramento dell’efficienza energetica, della sostenibilità ambientale e delle prestazioni funzionali ed illuminotecniche degli impianti di pubblica illuminazione, i quali consumi, gestione e stato di fatto, sono spesso rispettivamente, sproporzionati inadeguati ed obsolescenti. L’attività progettuale, partita dall’analisi del settore e dal coinvolgimento strutturato di tutti i soggetti direttamente ed indirettamente implicati nei processi di gestione del servizio di pubblica illuminazione, è pervenuta alla definizione di quel percorso che, standardizzato e supportato, dovrebbe idealmente garantire una gestione efficiente e sostenibile degli impianti oltre che una corretta programmazione e realizzazione degli interventi volti alla loro riqualificazione. L’adozione di una metodologia operativa, l’innalzamento del livello di conoscenza e competenza gestionale dell’impianto da parte dei suoi diretti responsabili, lo sviluppo di appositi format operativi e standard di riferimento e la conversione di una rete scollegata di operatori pubblici e privati ed iniziative disgiunte e solitarie in Network strutturati ed operativamente integrati e coordinati, sono stati e sono al tempo stesso, gli strumenti, gli obiettivi ed i principali risultati, rispettivamente sviluppati, perseguiti e conseguiti dal Progetto nel corso della sua realizzazione. In particolare le attività sviluppate in questa annualità si sono concentrate: - Nel perfezionamento e completamento di quel processo operativo ideale che, denominato come “Un percorso in salita per una bolletta in discesa”, dovrebbe costituire una valida guida al miglioramento della gestione energetica, operativa, illuminotecnica e prestazionale degli impianti di pubblica illuminazione; - nella sperimentazione e perfezionamento di appositi format e standard operativi, denominati “strumenti di supporto e/o prodotti Lumière” che, strutturati in funzione del processo operativo proposto, dovrebbero promuoverne e facilitarne l’avviamento ed il conseguimento; - nel completamento e perfezionamento delle Linee Guida quale Manuale di facile consultazione comprendente, in forma semplificata, tutte quelle tematiche che devono essere affrontate e dovrebbero far parte del bagaglio culturale di coloro ai quali è demandata la gestione degli impianti; - nella diffusione ed assessment di quei “prodotti ed attività” già operativi, sia in forma definitiva sia in forma sperimentale quali: le schede d’illuminazione pubblica base (IP) e impianto significativo (IS), le Linee Guida Economico-Finanziarie, i Workshop, i Convegni, le Manifestazioni e lo sviluppo di proposte progettuali. L’attività, grazie al confronto diretto con tutti i soggetti che interagiscono nei processi di gestione degli impianti, ha consentito sia di verificare l’efficacia e la validità delle proposte sia di colmarne le lacune e perfezionarne la conformità alle esigenze dei destinatari e degli obiettivi prefissati. L’impostazione di una “filosofia” di gestione del servizio di pubblica illuminazione, in grado di garantire una “correttezza” procedurale, funzionale ed operativa, a tutela degli interessi di coloro che gli impianti li gestiscono, li riqualificano, li illuminano e li vivono, rappresenta il tentativo e la proposta Lumière per un servizio più efficiente, sostenibile ed innovativo.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ENEA Open Archive
    Other ORP type . 2012
    Data sources: ENEA Open Archive
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      ENEA Open Archive
      Other ORP type . 2012
      Data sources: ENEA Open Archive
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Nicolini, Daniele; Giannuzzi, Giuseppe Mauro; Miliozzi, Adio;

    La realizzazione di un qualsivoglia sistema solare a concentrazione, sia esso a torre o lineare parabolico od a disco, per una qualsiasi destinazione d’uso (produzione di energia elettrica, realizzazione di processi chimici, etc.) passa sempre attraverso la progettazione del campo solare e, più in particolare, del sistema di concentrazione. Il presente documento si pone l’obiettivo di fornire delle linee guida utili alla progettazione di un generico concentratore solare sulla base del suo inquadramento tipologico e della individuazione del quadro normativo da applicare nelle verifiche progettuali. L’insieme delle leggi, dei decreti, delle circolari e delle raccomandazioni che disciplinano, in Italia, la progettazione di strutture come quella in esame, permette di affrontare con sufficienti margini di sicurezza, le tematiche invariabilmente poste al progettista strutturale e riguardanti sia la funzionalità del concentratore che l’incolumità delle persone che vi operano. Il presente documento si pone l’obiettivo primario di adattare detta normativa al generico concentratore solare sviluppando quelle parti che sono più specifiche della struttura in oggetto come, ad esempio, i carichi ed in particolare le azioni dovute al vento ed alla neve. Per quanto riguarda i metodi di calcolo da adottare, si rinuncia ad utilizzare il metodo delle tensioni ammissibili ma, proiettandosi nel prossimo futuro, si dà indicazione sul modo di utilizzare il metodo degli Stati Limite. The achievement of any concentrated solar power system, either tower or parabolic-trough or dish, for any use (electrical power production, chemical processes, etc.) goes always trough the design of the solar field and, in particular, of the concentration system. The objective of the present document is to supply the guidelines useful for the design of a generic solar concentrator on the base of its typological classification and of the selection of the norms to apply in the design verification. All the laws, the decrees, the circulars and the recommendations that discipline, in Italy, the design of structures like the one under investigation, allow to face with sufficient safety margins, the thematics invariably placed to the structural designer and regarding both the functionality of the concentrator and the security of the persons who operate on it. The main objective of the present work is to adapt the norm to the generic solar concentrator, developing the parts that are specific for the considered structure like, as an example, the loads and, in particular, the actions due to the wind and the snow. As far as the calculation methods to adopt, the method of the Permissible Stresses is rejected and indication on how to use the method of the Limit States is given.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ENEA Open Archive
    Other ORP type . 2006
    Data sources: ENEA Open Archive
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ENEA Open Archivearrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      ENEA Open Archive
      Other ORP type . 2006
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Santoli, Demis; Valdiserri, Massimo; Gianotti, Daniel; Cati, Stefano; +2 Authors

    Relativamente alla caratterizzazione sperimentazione dei generatori di vapore, uno dei principali problemi di sicurezza del progetto di reattore nucleare refrigerato a metallo liquido è la rottura dei tubi del generatore di vapore. Infatti, tale evento può implicare la propagazione di un’onda di pressione nel vessel principale che può causare, direttamente o indirettamente, il danneggiamento di strutture interne al vessel del primario. In caso di grandi o piccole perdite, il vapore rilasciato dal secondario del reattore, a pressione più elevata, può essere trascinato dal flusso principale verso l’ingresso del core, causando inserzioni di reattività. Un altro aspetto rilevante è il fatto che tale evento potrebbe avere un impatto sul sistema di controllo della chimica del refrigerante primario, compromettendone l’affidabilità ed il buon funzionamento. Lo sviluppo di un sistema capace di identificare in tempo la presenza di una piccola rottura nel tubo del generatore di vapore potrebbe essere utilizzata per prevenire il degradare della piccola perdita in SGTR: quindi diminuire la probabilità di quello che è, ad oggi, considerato l’incidente di riferimento per la sicurezza del reattore LFR. Nell’ambito dell’attività PAR 2018 in sinergia con il progetto europeo MAXSIMA, sono stati effettuati test sperimentali per caratterizzare il rilascio attraverso tipiche cricche che possono verificarsi nei tubi pressurizzati di un generatore di vapore, e correlare il tasso di rilascio a segnali rilevati da microfoni, accelerometri ed emettitori acustici.

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    ENEA Open Archive
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Morvillo, P.; Diletto, C.; Auriemma, F.; De Rosa, C.;

    La presente attività di ricerca ha avuto l’obiettivo di sviluppare un sistema ibrido innovativo in cui un copolimero a blocchi nanostrutturato è selettivamente caricato con nanoparticelle inorganiche conduttive. I copolimeri a blocchi (BCPs) consistono in macromolecole distinte di due o più omopolimeri, covalentemente legate e che tendono a segregare in microdomini distinti a causa delle loro mutue repulsioni [1, 2]. Questo genera la formazione spontanea di nanostrutture che sono state considerate utili alla creazione di patterns regolari su scala nanometrica e che sono importanti per diverse tecnologie su film sottile [3, 4, 5]. I microdomini dei BCPs nanostrutturati (sfere, cilindri o lamelle) formati spontaneamente per self-assembly [1-5], possono agire da hosts per sequestrare nanofillers di appropriata affinità chimica e geometrica producendo un ordine a lungo raggio nel posizionamento delle nanoparticelle [6]. I BCPs sono, quindi, materiali ideali per agire da “impalcatura” nell’ingegneria di nuovi nanocompositi, dove la distribuzione di particelle guest è guidata dall’ordine della matrice host. Questo genera un assemblaggio gerarchico di nanostrutture ibride organico-inorganico (polimero-metallo) in cui un livello di self-assembly guida il successivo. La chiave per l’ingegneria di questi materiali è l’abilità nel controllare la morfologia finale delle nanostrutture dei BCP e nell’ottenere un’infiltrazione selettiva di nanoparticelle in microdomini specifici delle nanostrutture. Nel presente progetto è stato utilizzato un copolimero a blocchi amorfo, poli(stirene-b-metilmetacrilato) (PS-b-PMMA), con frazione in volume scelta in modo tale da ottenere morfologia di tipo lamellare. Film sottili sono stati preparati mediante spin-coating o drop-casting a Tamb su un substrato trasparente e conduttivo quale ITO (Indium Tin Oxide). La scelta di questo substrato ha consentito di ottenere una orientazione perpendicolare dei microdomini lamellari di PS e PMMA formati per self-assembly. Infine, è stato realizzato un nanocomposito ibrido mediante incorporazione selettiva di nanoparticelle di oro all’interno dei domini di PS utilizzando un processo innovativo basato sull’evaporazione e condensazione di nanoparticelle metalliche [7, 8], le quali diffondono nei domini preferenziali formando nanoparticelle con selettività spaziale sulla superficie del film, in particolare dopo successivi trattamenti di ricottura.

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    ENEA Open Archive
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Marzo, Giuseppe Augusto; Fedeli, Carlo; Capone, Mauro; De Angelis, Giorgio;

    Il presente lavoro prende in esame lo studio delle interazioni chimiche tra combustile e refrigerante in reattori di IV generazione raffreddati a piombo fuso. Nella prima parte (a cura di CIRTEN-PoliMi) sono state determinate mediante metodi computazionali (semi-empirici e DFT) alcune grandezze termodinamiche non note (entropia, calore specifico ed entalpia di formazione e di soluzione) di composti binari e ternari di interesse per la problematica oggetto del presente lavoro. Tali informazioni sono state utilizzate per compilare il database di dati termochimici necessario per valutare la composizione all’equilibrio termodinamico di sistemi combustibile-refrigerante semplificati. Si è quindi effettuata un’analisi preliminare di un sistema MOXirr-Pb semplificato, dove il combustibile irraggiato è stato simulato introducendo del lantanio, quale rappresentante dei prodotti di fissione. Nella seconda parte (a cura di ENEA) viene analizzato, sulla base di prove sperimentali, ciò che accade a seguito del contatto diretto di alcune sostanze – derivanti dalla fissione del combustibile UO2 – con il refrigerante (piombo fuso) in un reattore a piombo. Le prove sperimentali evidenziano come, per le sostanze chimiche prese in esame, non ci sia interazione di tipo chimico, e le stesse si limitino a “galleggiare” sul refrigerante liquido. Vengono anche formulate delle ipotesi su ciò che accadrebbe con l’ossido di uranio. Viene inoltre valutata l’interazione tra elementi di fissione volatili (in particolare cesio e iodio) e piombo fuso in condizioni di normale esercizio. Infine viene proposto un metodo di sintesi del MOF-5, capostipite delle sostanze di nuova generazione capaci di “catturare” i gas di fissione.

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    ENEA Open Archive
    Other ORP type . 2014
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    Authors: Antonelli, Andrea; Bassini, Serena;

    Nell’ambito dell’Accordo di Programma ENEA-MiSE, sono state condotte prove di corrosione in piombo liquido statico di rivestimenti di interesse per i sistemi LFR. I rivestimenti studiati sono Ta, Al2O3 e TiN. Il ricoprimento di Ta è stato prodotto da Tantaline con metodo CVD (Chemical Vapor Deposition), il ricoprimento di Al2O3 da IIT (Istituto Italiano di Tecnologia) con tecnica PLD (Pulsed Laser Deposition) e il ricoprimento di TiN da CSM con tecnica arc-PVD. Le prove di corrosione sono state condotte alle temperature di 480 e 550°C per una durata di 1000 ore. Le prove sono state eseguite, inoltre, con alta (10-4 % in peso) e bassa (10-9 – 10-8 % in peso) concentrazione di ossigeno in piombo per valutare l’effetto sull’ossidabilità dei rivestimenti. In questo report sono descritti i risultati ottenuti nelle prove.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Levizzari, Riccardo;

    Il report presenta gli elementi utili per la pianificazione dello studio della Zona Non Satura (ZNS), nel contesto delle analisi di sicurezza per il futuro Deposito Nazionale per i rifiuti radioattivi.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Rizzo, Antonietta; Piccoli, Angela;

    Il presente documento riassume gli aspetti rilevanti emersi durante la partecipazione ai lavori del WGB-40 del CTBTO, tenutosi a Vienna dal 18 Marzo al 5 Aprile 2013.

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    ENEA Open Archive
    Other ORP type . 2013
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    Authors: Murra, D.; Aquilini, M.; Bollanti, S.; Di Lazzaro, P.; +4 Authors

    Le lunghezze d’onda comprese tra 200 e 280 nanometri, intervallo spettrale denominato UV-C, sono particolarmente adatte a debellare batteri e virus in quanto tale radiazione spezza i legami proteici e può danneggiare in modo irreversibile le catene del DNA/RNA. Sino a poco tempo fa, le sorgenti UV-C disponibili in commercio erano lampade a gas, basate tipicamente su deuterio, xenon, vapori di mercurio, o eccimeri. Queste lampade funzionano a tensioni piuttosto elevate, sono fragili e hanno tempi di accensione di diversi minuti prima di arrivare a regime ed emettere la potenza nominale. La disponibilità di LED (Light Emitting Diodes, dispositivi a stato solido) che emettono radiazione nell’intervallo dell’UV-C consente oggi di realizzare una “lampada”, basata su una matrice di tali sorgenti, che utilizza un alimentatore a bassa tensione, può essere disegnata in configurazioni geometriche adattabili ad ogni esigenza, si accende istantaneamente ed è meccanicamente molto robusta. In questo Rapporto Tecnico sono illustrati il progetto, la realizzazione e la caratterizzazione di una lampada a LED UV-C e del relativo alimentatore. È inoltre brevemente descritto un esperimento, a scopo fitosanitario, in cui tale lampada è stata utilizzata. Optical radiation with wavelengths between 200 and 280 nanometers, in the UV-C range, is particularly suitable for eradicating bacteria and viruses, as this radiation breaks protein bonds and can irreversibly damage DNA/RNA chains. Until recently, the commercial UV-C sources were gas lamps, typically based on deuterium, xenon, mercury vapor, or excimers. All of these lamps operate at quite high voltages, are fragile and require several minutes of warming up before working at full power. The availability of solid-state LEDs (Light Emitting Diodes) that emit radiation in the UV-C range allows a “lamp” to be made by assembling an array of such light sources, which uses a low-voltage power supply, can be designed in geometric configurations adaptable to any need, turns on/off instantly and is robust. This Technical Report illustrates the work done at ENEA Frascati on the design and assembly of a UVC LED lamp and of its power supply, its characterization and application to a phytosanitary experiment.

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    Authors: Chierici, R.; Di Gregorio, A.; Provaroni, R.; Meloni, C.; +5 Authors

    Lumière è un Progetto sviluppato da ENEA con l’obiettivo di promuovere l’efficienza energetica nel settore dell’illuminazione pubblica al fine di razionalizzarne e ridurne i consumi di energia elettrica e, conseguentemente, contenerne le emissioni di CO2 in atmosfera. Dedicato ed indirizzato principalmente ai Comuni italiani, nelle persone dei loro sindaci e pubblici amministratori, punta al miglioramento dell’efficienza energetica, della sostenibilità ambientale e delle prestazioni funzionali ed illuminotecniche degli impianti di pubblica illuminazione, i quali consumi, gestione e stato di fatto, sono spesso rispettivamente, sproporzionati inadeguati ed obsolescenti. L’attività progettuale, partita dall’analisi del settore e dal coinvolgimento strutturato di tutti i soggetti direttamente ed indirettamente implicati nei processi di gestione del servizio di pubblica illuminazione, è pervenuta alla definizione di quel percorso che, standardizzato e supportato, dovrebbe idealmente garantire una gestione efficiente e sostenibile degli impianti oltre che una corretta programmazione e realizzazione degli interventi volti alla loro riqualificazione. L’adozione di una metodologia operativa, l’innalzamento del livello di conoscenza e competenza gestionale dell’impianto da parte dei suoi diretti responsabili, lo sviluppo di appositi format operativi e standard di riferimento e la conversione di una rete scollegata di operatori pubblici e privati ed iniziative disgiunte e solitarie in Network strutturati ed operativamente integrati e coordinati, sono stati e sono al tempo stesso, gli strumenti, gli obiettivi ed i principali risultati, rispettivamente sviluppati, perseguiti e conseguiti dal Progetto nel corso della sua realizzazione. In particolare le attività sviluppate in questa annualità si sono concentrate: - Nel perfezionamento e completamento di quel processo operativo ideale che, denominato come “Un percorso in salita per una bolletta in discesa”, dovrebbe costituire una valida guida al miglioramento della gestione energetica, operativa, illuminotecnica e prestazionale degli impianti di pubblica illuminazione; - nella sperimentazione e perfezionamento di appositi format e standard operativi, denominati “strumenti di supporto e/o prodotti Lumière” che, strutturati in funzione del processo operativo proposto, dovrebbero promuoverne e facilitarne l’avviamento ed il conseguimento; - nel completamento e perfezionamento delle Linee Guida quale Manuale di facile consultazione comprendente, in forma semplificata, tutte quelle tematiche che devono essere affrontate e dovrebbero far parte del bagaglio culturale di coloro ai quali è demandata la gestione degli impianti; - nella diffusione ed assessment di quei “prodotti ed attività” già operativi, sia in forma definitiva sia in forma sperimentale quali: le schede d’illuminazione pubblica base (IP) e impianto significativo (IS), le Linee Guida Economico-Finanziarie, i Workshop, i Convegni, le Manifestazioni e lo sviluppo di proposte progettuali. L’attività, grazie al confronto diretto con tutti i soggetti che interagiscono nei processi di gestione degli impianti, ha consentito sia di verificare l’efficacia e la validità delle proposte sia di colmarne le lacune e perfezionarne la conformità alle esigenze dei destinatari e degli obiettivi prefissati. L’impostazione di una “filosofia” di gestione del servizio di pubblica illuminazione, in grado di garantire una “correttezza” procedurale, funzionale ed operativa, a tutela degli interessi di coloro che gli impianti li gestiscono, li riqualificano, li illuminano e li vivono, rappresenta il tentativo e la proposta Lumière per un servizio più efficiente, sostenibile ed innovativo.

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