New solutions to a multi-objective benchmark problem of induction heating: an application of computational biogeography and evolutionary algorithms

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Inactivating SARS-CoV-2 Using 275 nm UV-C LEDs through a Spherical Irradiation Box: Design, Characterization and Validation

We report on the design, characterization and validation of a spherical irradiation system for inactivating SARS-CoV-2, based on UV-C 275 nm LEDs. The system is designed to maximize irradiation intensity and uniformity and can be used for irradiating a volume of 18 L. To this aim: (i) several commercially available LEDs have been acquired and analyzed; (ii) a complete optical study has been carried out in order to optimize the efficacy of the system; (iii) the resulting prototype has been characterized optically and tested for the inactivation of SARS-CoV-2 for different exposure times, doses and surface types; (iv) the result achieved and the efficacy of the prototype have been compared with similar devices based on different technologies. Results indicate that a 99.9% inactivation can be reached after 1 min of treatment with a dose of 83.1 J/m2

Numerical FEM Models for the Planning of Magnetic InductionHyperthermia Treatments With Nanoparticle

A numerical FEM model of a magnetic fluid hyperthermia (MFH) treatment on an hepatocellular carcinoma (HCC) metastasis has been simulated. Starting from actual CT images of the patient, a 3-D geometry of the anatomical district has been reconstructed and a coupled electromagnetic and thermal transient analysis has been performed, in order to predict the temperature distribution during the treatment. The in vivo effect of blood perfusion has also been implemented through the Pennes's model. Various simulations have been carried out, based on different particle sizes and concentrations, as well as different exciting field intensities

Permanent Magnet Heater for Special Applications

none2nononeForzan, Michele; Dughiero, FabrizioForzan, Michele; Dughiero, Fabrizi

Numerical FEM models for the planning of magnetic induction hyperthermia treatments with nanoparticles

A numerical FEM model of a magnetic fluid hyperthermia (MFH) treatment on an hepatocellular carcinoma (HCC) metastasis has been simulated. Starting from actual CT images of the patient, a 3D geometry of the anatomical district has been reconstructed and a coupled electromagnetic and thermal transient analysis has been performed, in order to predict the temperature distribution at the end of the treatment. The in vivo effect of blood perfusion has also been implemented through the Pennes\u2019s model. Various simulations have been carried out, based on different particle sizes and concentrations, as well as different exciting field intensities

Transient Magnetisc FEM Analysis for the Prediction of Electrodynamic Forces in Transformers with Magnetic Shunts

Summary form only given. The magnetic core of a transformer for welding devices has a moving magnetic shunt. The shunt can assume several different positions to modify the flux leakage values. These transformers are made to supply high current values: saturation of the magnetic core leads to strongly deformed voltage and current