Search

Your search keyword '"Cavallini, Andrea"' showing total 767 results
Start Over Author "Cavallini, Andrea"
767 results on '"Cavallini, Andrea"'

160. Physics of electrical treeing in Silicon Gel

Author

Cavallini, Andrea, Mancinelli, Paolo <1988>, Cavallini, Andrea, and Mancinelli, Paolo <1988>

Abstract

Silicone gel is commonly employed in electrical insulation, especially in power module encapsulation. In the recent years, the increase of the operation voltage of this application led to a higher electrical stress on the silicone gel, thus, electrical treeing has become a serious issue to the reliability of power modules. In this research, the degradation produced by the electrical treeing has been evaluated dividing it into two main parts: the tree inception and the tree growth, which have been assessed for different waveforms of the applied voltage. The tree inception, the preliminary stage of this phenomenon, has been tested and an innovative model has been proposed explaining this stage. The tree growth has been evaluated in function of the waveform voltage obtaining useful comparisons between the possible electrical stresses. This thesis highlights the peculiar behavior of silicone gel under high electric field and furnishes useful guidelines for designing and testing the electrical insulation made by silicone gel.

Published
2017

161. Fundamental Study and Modeling of Nanofluids

Author

Cavallini, Andrea, Negri, Fabrizio <1989>, Cavallini, Andrea, and Negri, Fabrizio <1989>

Abstract

In spite of all the recent studies, the insulating materials employed for high voltage (HV) transformer manufacturing are still those in use since several decades. For the fluid insulation, mineral oil (MO) still dominates thanks to its excellent dielectric and cooling performances. Anyway, since it is a carcinogenic agent, the electric industry searched alternatives for applications where environmental concerns are of greater concern (e.g., offshore equipment, trains). In this context, many efforts have been done to study green uids, mostly natural and synthetic esters, to replace MO. However, green alternatives have a low resistance to electrical discharge propagation. Some researchers have started to experiment with MO-based nano uids (i.e., colloidal solutions of nanoparticles in a base fluid), with the aim of improving the MO heat exchange capabilities. They have started to study nano fluids because of their outstanding thermal properties, but these fluids should be excellent also regarding all the electrical properties, ranging from the power losses to the discharge propagation resistance. Target of this thesis is to perform a fundamental study aimed at understanding if nanofluids are a real possible alternative for mineral oil.

Published
2017

163. RNA isolation from the milk of dairy ewes for transcriptome analysis

Author

Vangelisti, Alberto, Giordani, Tommaso, Natali, Lucia, Serra, Andrea, Conte, Giuseppe, Mele, Marcello, Ranieri, Annamaria, and Cavallini, Andrea

Subjects
RNA isolation, milk somatic cells, Soil Science, linseed, Agronomy and Crop Science, transcriptome, dairy ewes, Food Science, linseed, milk somatic cells, RNA isolation, transcriptome
Published
2016

171. Cultivar-specific transcriptome prediction and annotation in Ficus carica L.

Author

Solorzano Zambrano, Liceth, primary, Usai, Gabriele, additional, Vangelisti, Alberto, additional, Mascagni, Flavia, additional, Giordani, Tommaso, additional, Bernardi, Rodolfo, additional, Cavallini, Andrea, additional, Gucci, Riccardo, additional, Caruso, Giovanni, additional, D'Onofrio, Claudio, additional, Quartacci, Mike Frank, additional, Picciarelli, Piero, additional, Conti, Barbara, additional, Lucchi, Andrea, additional, and Natali, Lucia, additional

Published
2017
Full Text
View/download PDF

180. The genome sequence and transcriptome of Potentilla micrantha and their comparison to Fragaria vesca (the woodland strawberry)

Author

Buti, Matteo, primary, Moretto, Marco, additional, Barghini, Elena, additional, Mascagni, Flavia, additional, Natali, Lucia, additional, Brilli, Matteo, additional, Lomsadze, Alexandre, additional, Sonego, Paolo, additional, Giongo, Lara, additional, Alonge, Michael, additional, Velasco, Riccardo, additional, Varotto, Claudio, additional, Šurbanovski, Nada, additional, Borodovsky, Mark, additional, Ward, Judson A, additional, Engelen, Kristof, additional, Cavallini, Andrea, additional, Cestaro, Alessandro, additional, and Sargent, Daniel James, additional

Published
2017
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results