906 research outputs found
Accordo di collaborazione ENEA-FN per "Realizzazione di pannelli e campioni in SiCf/SiC per caratterizzazioni fisico-meccaniche" LAC 073 R378
No full textScopo della presente relazione e quello di descrivere il lavoro intermedio svolto all’interno dell’Accordo di collaborazione tra ENEA ed FN S.p.A. relativo alla realizzazione di pannelli e campioni di SiC/SiC. Il processo CVI (Chemical VApuor Infiltration) si articola in una prima fase in cui si preparano le preforme in autoclave e si deposita un interfase di carbonio sulle fibre. Dopo le preforme vengono densificate utilizzando
dei precursori alo stato di vapore o gassoso. I prodotti della decomposizione si depositano sulle superfici esterne del fibre delle preforme. Tale processo aumenta progressivamente il diametro delle fibre con la formazione di una matrice cristallina.
In questa fase il controllo delle temperature nel forno costituisce un parametro fondamentale. Per questa ragione si è eseguita una certificazione che accertasse l’uniformità delle temperature all’interno del forno. Sono state costruite attrezzature per poter sostenere ed densificare i singoli yarns che compongono il tessuto plane weave al fine di farne una caratterizzazione meccanica. Sono state realizzate le preforme dei pannelli e dei tubi e le attrezzature per il loro sostegno per la successiva densificazione
Accordo di collaborazione ENEA-FN per "Realizzazione di pannelli e campioni in SiCf/SiC per caratterizzazioni fisico-meccaniche" LAC 073 R380
No full textScopo della presente relazione e quello di descrivere la fase conclusiva del lavoro svolto all’interno dell’Accordo di collaborazione tra ENEA ed FN S.p.A. relativo alla realizzazione di pannelli e campioni di SiC/SiC. Il processo CVI (Chemical VApuor Infiltration) si articola in una prima fase in cui si preparano le preforme in autoclave e si deposita un interfase di carbonio sulle fibre. Dopo le preforme vengono densificate
utilizzando dei precursori allo stato di vapore o gassoso. I prodotti della decomposizione si depositano sulle superfici esterne del fibre delle preforme. Tale processo aumenta progressivamente il diametro delle fibre con la formazione di una matrice cristallina. In questa fase sono stati definiti i parametri ottimali per l’infiltrazione di carbonio e per l’infiltarzione del carburo di silicio, tale lavoro ha portato alla definizione delle procedure operative LAC 073 N238 e LAC 073 N241
D.H. Lawrence, La Volpe, traduzione e cura di Stefania Michelucci, edizione bilingue
No full textIt is the bilingual and critical edition of D.H. Lawrence's The Fox in the series, Elsinore, Collana di Classici Inglesi, edited and translated by Stefania Michelucci
The volume consists of a long introduction to the text, pp 11-37, of a biographical article on the author and his work (l'autore e l'opera), pp. 39-45), of a note to the text (pp. 47-48) (English and Italian, page to page, pp. 49-227) of explicatory notes (pp. 229-243) and of a biographical section (pp. 245-252)
Quality control facilities for large optical reflectors at ENEA-Casaccia for physics application
No full textThe paper describes the quality control facilities for large optical reflectors available at ENEA-Casaccia. Commercial and custom spectrophotometers allow to measure the reflectance; specular and diffused for flat samples, and specular for the full-size reflector. In the case of spherical shape, the 2f and the pin-hole optical tests give a quick evaluation of the focusing effectiveness and the curvature uniformity, respectively. An optical profilometer allows to accurately measure the reflector profile and its deviations from the project specifications
Radiation activities and application of ionizing radiation on cultural heritage at ENEA Calliope gamma facility (Casaccia R.C., Rome, Italy)
No full textAbstract
Since the 1980s, research and qualification activities are being carried out at the 60Co gamma Calliope plant, a pool-type irradiation facility located at the Research Centre ENEA-Casaccia (Rome, Italy). The Calliope facility is deeply involved in radiation processing research and on the evaluation and characterization of the effects induced by gamma radiation on materials for different applications (crystals, glasses, optical fibres, polymers and biological systems) and on devices to be used in hostile radiation environment such as nuclear plants, aerospace and high energy physics experiments. All the activities are carried out in the framework of international projects and collaboration with industries and research institutions. In the present work, particular attention will be paid to the cultural heritage activities performed at the Calliope facility, focused on two different aspects: (a) conservation and preservation by bio-deteriogen eradication in archived materials, and (b) consolidation and protection by degraded wooden and stone porous artefacts consolidation.</jats:p
Ricordo di Stefania Rossi Minutelli
No full textThe author commemorates Stefania Rossi Minutelli – librarian at the Marciana National Library from 1971 to 2005, who died on october 10th, 2008 – remembering her professional career and her role within the Italian Library Association.L'autore ricorda con affetto e stima professionale Stefania Rossi Minutelli – bibliotecaria marciana dal 1971 al 2005, scomparsa nell'ottobre 2008 – ripercorrendo il tratto di strada fatto insieme all'interno dell'Associazione Italiana Biblioteche e del mondo bibliotecario italiano
Characterization of g-radiation induced polymerization in ethyl methacrylate and methyl acrylate monomers solutions
No full textThe present work is focused on the Î3-radiation induced polymerization of ethyl methacrylate (EMA) and methyl acrylate (MA) monomers mixture to obtain a co-polymer with specific features. The effect of the irradiation parameters (radiation absorbed dose, dose rate) and of the environmental atmosphere on the features of the final products was investigated. Attenuated Total Reflectance - Fourier Transform Infrared Spectroscopy (ATR-FTIR) and Nuclear Magnetic Resonance high-resolution analyses of hydrogen and carbon nuclei (1H and 13C NMR) were applied to follow the Î3-induced modifications by monitoring the co-polymerization process and allowed the irradiation parameters optimization. Diffusion-Ordered NMR (DOSY-NMR) data were used to evaluate the co-polymers polydispersity and polymerization degree. Since the last parameter is strongly influenced by the Î3 radiation and environmental conditions, a comparison among samples prepared and irradiated in air and under nitrogen atmosphere was carried out. In presence of oxygen, higher radiation was required to obtain a full solid co-polymer since a partial amount of energy released to the samples was involved in competitive processes, i.e. oxygen-containing free radicals formation and primary radicals recombination. Irrespectively to the environmental atmosphere, more homogeneous samples in term of polymerization degree dispersion was achieved at lower dose rates. At radiation absorbed doses higher than those needed for the formation of the co-polymer, while in case of samples irradiated in air heavy depolymerization was verified, a sensible increase of the samples stability was attained if the irradiation was performed under nitrogen atmosphere
Controllable gamma-ray sensitivity of Ag-doped and/or AgI-modified Ge-Ga-S glasses
No full textGamma-ray (gamma-ray) sensitivity has been studied in Ag-doped and/or AgI-modified Ge-Ga-S glasses. The sensitivity is controllable in terms of silver presence. Compared to the silver-free sample, the AgI-modified glass shows greater sensitivity to gamma-ray irradiation regarding larger change in the transmission spectra (Delta T), whereas improved resistance to gamma-ray irradiation occurs in the silver-doped AgI-modified glass with only 1 mol% silver metal being intentionally added
The Global Art Gallery Report with Richard Taittinger, Magnus Resch, Stefania Bortolami, and James Fuentes
No full textModerator: Magnus Resch Book Author and Art Entrepreneur
Panelists:
Stefania Bortolami, Gallery Owner
James Fuentes, Gallery Owner
Richard Taittinger, Gallery Owner
The Global Art Gallery Report is the first and the most wide-ranging report on today\u27s commercial art galleries. Published by Phaidon, it is the first insight of its kind, presenting a detailed and comprehensive portrait of today\u27s gallery scene. In a panel discussion, Magnus Resch will discuss his findings with gallerists Jeffrey Deitch, Stefania Bortolami and James Fuentes. Panelists will shine a light on the future of the art gallery.
Founded in 1969, the Sotheby’s Institute of Art is the first and foremost graduate school for the study of art and its markets. With more than 6,000 alumni working internationally in art fairs, galleries, museums, auction houses, and nonprofits, the Institute’s alumni are shaping the future of the art industry. Past guest speakers at the Institute have included artists, such as: Ulay and Jaša, Dan Graham, Alexandre Singh, Glenn Ligon, Sanford Biggers, Carolee Schneemann, Dara Birnbaum, Alfredo Jaar, Ahmed Alsoudani; and art industry experts from Sotheby’s, Art Basel, Paddle8, Auctionata, Armory Show, Artsy, Whitney Museum, Swiss Institute, MoMA, and others.https://digitalcommons.sia.edu/speaker/1007/thumbnail.jp
A Human Rights Approach to Environmental Health
No full textThis chapter explores the interface between health and the environment through the human rights prism, focusing on the environmental dimension of the right to health and on the now widely recognized right to a healthy, safe and clean environment. To this end, the chapter intends to offers a comprehensive analysis of the relevant provisions contained in human rights treaties and the obligations stemming therefrom. The review of these legal sources is completed by a critical assessment of the case law produced by regional human rights bodies and their evolutive interpretation of individual rights and corresponding State obligations in this field, with a special focus on the case law of the European Court of Human Rights. The aim of this legal analysis is to evaluate the added value of a human rights approach to environmental health litigation, with a view to best achieving the overarching goal of public health protection from environmental harm. The author highlights that human rights can be used in court as effective tools to protect public health against the adverse effects of environmental degradation and severe pollution. She also stresses that the potential of human rights bodies in the field of environmental health is yet fully unexpressed, but further positive developments towards the protection of collective and intergenerational rights related to the environment and human health can be achieved thanks to the dynamic and evolutive approach adopted by these bodies and through the virtuous circle created by judicial cross-fertilization
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