173,459 research outputs found
Ester e il fragile potere delle donne
No full textHo analizzato la figura biblica di ester alla luce della ricezione che ne ha avuto nella predicazione pre-tridentin
A Comparative Study of Physicochemical, Dielectric and Thermal Properties of Pressboard Insulation Impregnated with Natural Ester and Mineral Oil
No full textNatural ester is considered to be a substitute of mineral oil in the future. To apply natural ester in large transformers safely, natural ester impregnated solid insulation should be proved to have comparable dielectric strength and thermal stability to mineral oil impregnated solid insulation. This paper mainly focuses on a comparative study of physicochemical, ac breakdown strength and thermal stability behavior of BIOTEMP natural ester/pressboard insulation and Karamay 25# naphthenic mineral oil/pressboard insulation after long term thermal ageing. The physicochemical and dielectric parameters including moisture, acids and the ac breakdown strength of these two oil/pressboard insulation systems at different ageing status were compared. The permittivity and ac breakdown strength of these two oil/pressboard insulation systems at different temperatures were also investigated. And a comparative result of the thermal stability behavior of these two oil/pressboard insulation systems with different ageing status was provided at last. Results show that though natural ester has higher absolute humidity and acidity during the long ageing period, the lower relative humidity of natural ester helps to keep its ac breakdown strength higher than mineral oil. The pressboard aged in natural ester also has higher ac breakdown strength than that aged in mineral oil. The lower relative permittivity ratio of natural ester impregnated paper to natural ester is beneficial to its dielectric strength. Using natural ester in transformer, the resistance to thermal decomposition of the oil/pressboard insulation system could be also effectively improved
Quantitative Analysis Ageing Status of Natural Ester-paper Insulation and Mineral Oil-paper Insulation by Polarization/Depolarization Current
No full textPolarization and Depolarization Current (PDC) technique is an effective tool to assess the condition of oil-paper insulation system in power transformers. So far the PDC behaviors of mineral oil-paper insulation have been widely investigated. However, with the increasing number of transformer choosing natural ester as its insulation oil, it is important to investigate the PDC characteristics of natural ester-paper insulation to see whether the PDC technique can also be used to assess the condition of new insulation system using natural ester in transformers accurately. In this research, natural esterpaper insulation sample and mineral oil-paper insulation sample were subjected to thermally accelerated ageing experiment at 110 °C for 120 days. The PDC characteristics of natural ester-paper insulation sample and mineral oil-paper insulation sample were compared over the ageing process. A new method for assessing the ageing condition of the oil-paper insulation in terms of the depolarization charge quantity was proposed. Results show that the polarization/depolarization current of natural ester-paper insulation sample is higher than that of mineral oil-paper insulation sample with the same ageing intervals. The depolarization charge quantity of both kinds of oil-paper insulation sample is very sensitive to their ageing conditions. There is an exponential relation between the stable depolarization charge quantity of both kinds of oil-paper insulation sample and the degree of polymerization (DP) of paper. The depolarization charge quantity can be used to predict the ageing condition of oil-paper insulation providing the measurement temperature is kept the same
Volo Nove Zero Tre. Emil Zátopek: il viaggio di un atleta
No full textVolo Nove Zero Tre.Emil Zátopek: il viaggio di un atletaprogetto di Stefano Annoni da una suggestione di Renata Molinaritesto di Maddalena Mazzocut-Miscon Stefano Annoni e Daniele Gaggianesiregia Massimiliano Spezianiassistente alla regia Anna Mainidirettrice di produzione Marta GalliProduzione ArteVOX e ASLICO, Teatro Sociale di Comoin collaborazione con l'Università degli Studi di Milanocon il patrocinio del CONI LOMBARDIA e del CONI Comitato Provinciale di Comodi Ester FuocoVolo Nove Zero Tre.Emil Zátopek: il viaggio di un atletaprogetto di Stefano Annoni da una suggestione di Renata Molinaritesto di Maddalena Mazzocut-Miscon Stefano Annoni e Daniele Gaggianesiregia Massimiliano Spezianiassistente alla regia Anna Mainidirettrice di produzione Marta GalliProduzione ArteVOX e ASLICO, Teatro Sociale di Comoin collaborazione con l'Università degli Studi di Milanocon il patrocinio del CONI LOMBARDIA e del CONI Comitato Provinciale di Comodi Ester Fuoc
<i>No se sabe</i>: entrevista a Nilda Ester Radman
No full textEntrevista a la médica veterinaria y bacterióloga clínica industrial Nilda Ester Radman, profesora titular de Parasitología Comparada en la Facultad de Ciencias Veterinarias de nuestra universidad y estudiosa de las enfermedades zoonóticas.Al hacer clic en el enlace que figura en "Documentos relacionados", pueden accederse a todos los trabajos de Nilda Ester Radman presentes en el repositorio.Radio Universidad Nacional de La Plat
Disputatio inauguralis iuridica de iure commerciorum privilegiato
No full textquam ... pro summis in utroque iure honoribus ac privilegiis doctoralibus ... consequendis. Ad diem ... Maii ann. M.DC.XC. publico ac solenni eruditorum examini subiicit Marcus Ester Hamburg. Loco horisque consuetisEnthält 44 ThesenDatum hs. ergänzt: Ad diem 30. MaiiDiss. iur. Basel, 169
Thermal oxidation of vinyl ester and unsaturated polyester resins
No full textThe thermal oxidative ageing of vinyl ester and unsaturated polyester was studied at temperatures ranging from 120 to 160°C and oxygen pressures ranging from 0.02 to 2.0 MPa. The oxidation of both materials was shown to generate anhydrides detected by FTIR spectroscopy, the origin of which being the oxidation of CH group in position of ester, and significant mass loss. According to FTIR study, vinyl ester was shown to be more oxidizable than unsaturated polyesters but this feature is counterbalanced by a lower volatile yield. The thickness of oxidized layer in diffusion limited oxidation regime was hence observed to be higher in Unsaturated Polyester (ca 600 µm) than in Vinyl Ester (ca 200 µm) at 160°C and seems not affected by the presence of high content of fillers.contrat direct Areva T
Postfazione - Gli spettacoli dello «scandalo» . In: CUPPONE R., FUOCO E.. Blasphemia. Il Teatro e il Sacro
No full textRisorgimento italiano/Risorgimento ebraico.
No full textLa mostra, organizzata da Ester Capuzzo e allestita presso "The Umberto Nahon Museum of Italian Jewish Art" di Gerusalemme, rileva lo stretto rapporto tra il Risorgimento italiano cui parteciparono numerosi ebrei degli Stati preunitari e l'emancipazione ebraica portato del movimento nazionale e pone in rilievo il legame ideale tra il processo di unificazione italiana e il sionismo
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