Search

Your search keyword '"Rizzo, Enrico"' showing total 12 results
Start Over Author "Rizzo, Enrico"
12 results on '"Rizzo, Enrico"'

4. The Campbell Model as a Tool to Introduce Students to AC Loss Calculation in Superconductors

Author

Grilli, Francesco, Rizzo, Enrico, Karlsruhe Institute of Technology (KIT), and Université de Lorraine

Subjects
AC losses, Maxwell's equations, critical state model, Condensed Matter::Superconductivity, [SPI.NRJ]Engineering Sciences [physics]/Electric power, element method, finite, superconductors
Abstract

International audience; A finite-element model implemented in the open-source FreeFem++ program is presented, with the aim of introducing students to the calculation of AC losses in superconductors. With this simple approach, students can learn about the critical state model used to describe the macroscopic electromagnetic behavior of superconductors and the importance of several factors influencing the AC losses of superconductors.

Published
2021

6. Simulations for the optimization of High Temperatur Superconductor current leads for nuclear fusion applications

Author

Rizzo, Enrico and Noe, M.

Subjects
Computational thermal Fluid Dynamics, Condensed Matter::Superconductivity, Nuclear fusion, current lead, Numerical simulation, ddc:620, High Temperature Superconductor, Quantitative Biology::Genomics, Engineering & allied operations
Abstract

Techniques based on numerical simulations have been applied to the analysis of the heat exchanger and the High Temperature Superconductor (HTS) module of HTS current leads. In the first case correlations have been derived for the meander flow geometry. In the second case steady state and transient thermal-electric models have been validated. Both techniques are used to design and optimize HTS current leads. The correlations were applied to a predictive analysis of the ITER HTS current leads.

Published
2013
Full Text
View/download PDF

10. Analysis and Performance Assessment for a 68 kA HTS Current Lead Heat Exchanger.

Author

Rizzo, Enrico, Heller, Reinhard, Savoldi Richard, Laura, and Zanino, Roberto

Subjects
*HIGH temperature superconductivity, *HEAT exchangers, *THERMAL hydraulics, *ELECTRIC currents, *HEAT transfer
Abstract

In this paper we extend the recently developed CtFD strategy for the analysis of the thermal-hydraulics of a meander flow type heat exchanger, validated against the Wendelstein7-X (W7-X) High Temperature Superconductor (HTS) current lead prototype experiment, to the case of a heat exchanger for a 68 kA HTS current lead. We aim to assess the optimized operative conditions and the influence of different geometrical configurations on the performance of the heat exchanger. [ABSTRACT FROM PUBLISHER]

Published
2012
Full Text
View/download PDF

11. CtFD Analysis of HTS Current Lead Fin-Type Heat Exchanger for Fusion Applications.

Author

Richard, Laura Savoldi, Class, Andreas, Fietz, Walter H., Heller, Reinhard, Rizzo, Enrico, and Zanino, Roberto

Subjects
COMPUTATIONAL fluid dynamics, HIGH temperature superconductivity, HEAT exchangers, NUCLEAR fusion, FLUID dynamics
Abstract

We apply a recently proposed Computational thermal Fluid Dynamics (CtFD) strategy to the analysis of a meander-flow path (MF) fin-type heat exchanger (HX), to be used in the HTS current leads for the LTS coils of both the W7-X stellarator and the JT-60SA tokamak. A mock-up of the HX was tested at the Karlsruhe Institute of Technology providing the database for the validation of the computational model. The hydraulic characterization of the mock-up is considered first, and then the heat transfer characteristic is analyzed. [ABSTRACT FROM AUTHOR]

Published
2010
Full Text
View/download PDF

12. The Effect of Curcumin on Idiopathic Parkinson Disease: A Clinical and Skin Biopsy Study

Author

Vincenzo Donadio, Alex Incensi, Giovanni Rizzo, Enrico Fileccia, Francesco Ventruto, Antonella Riva, Domenico Tiso, Martino Recchia, Veria Vacchiano, Rossella Infante, Giovanna Petrangolini, Pietro Allegrini, Silvia Avino, Roberta Pantieri, Barbara Mostacci, Patrizia Avoni, Rocco Liguori, and Vincenzo Donadio, Alex Incensi, Giovanni Rizzo, Enrico Fileccia, Francesco Ventruto, Antonella Riva, Domenico Tiso, Martino Recchia, Veria Vacchiano, Rossella Infante, Giovanna Petrangolini, Pietro Allegrini, Silvia Avino, Roberta Pantieri, Barbara Mostacci, Patrizia Avoni, Rocco Liguori

Subjects
α-Synuclein, Curcumin, Biopsy, General Medicine, Clinical scale, Pathology and Forensic Medicine, Parkinson disease, Cellular and Molecular Neuroscience, Dietary supplement, Neurology, Skin biopsy, Humans, Neurology (clinical), Skin, Protein misfolding
Abstract

There are currently no standardized therapies for Parkinson disease (PD). Curcumin shows anti-amyloidogenic properties in vitro and may be a promising treatment for PD. We evaluated the effects of curcumin supplementation on clinical scales and misfolded, phosphorylated α-synuclein (p-syn) accumulation in skin biopsies in 19 PD patients who received curcumin supplementation for 12 months and 14 PD patients to treated with curcumin. The patients underwent autonomic (COMPASS-31), motor (MDS-UPDRS and H&Y) and nonmotor (NMSS) questionnaires and skin biopsies to evaluate clinical involvement and p-syn load in skin nerves at the beginning and the end of study. Curcumin and curcuminoid levels were assayed in plasma and CSF. Supplemented patients showed detectable CSF curcuminoid levels that were lower than those in plasma. They showed a decrease of COMPASS-31 and NMSS scores, and a slight p-syn load decrease versus untreated patients who displayed a worsening of these parameters despite increased levodopa doses. Multiple regression models showed a significant effect of curcumin supplementation in decreasing the worsening of the clinical parameters and p-syn load at after curcumin treatment. These data suggest that curcumin can cross the blood-brain barrier, that it is effective in ameliorating clinical parameters and that it shows a tendency to decrease skin p-syn accumulation in PD patients.

Published
2022

Catalog

Books, media, physical & digital resources
See catalog results