Buscar
Mostrando ítems 11-20 de 932
Second-order dielectric stopping of ions in a free-electron gas
(American Physical Society, 2001-12)
The energy lost by a heavy projectile, with charge ZP, moving in a free-electron gas is studied within the framework of the dielectric formalism. In this model, the potential induced by the projectile is expanded in a ...
Melhoria para a visualização de eventos e alarmes gerados durante uma parada de emergência em uma unidade geradora hidrelétrica
(Universidade Tecnológica Federal do ParanáCuritibaDepartamento Acadêmico de Eletrônica, 2015-02-10)
The operation of a hidroelectic powerplant must obbey the rules of regulation institutions, and this rules control the time that a porwerplant can stay out of operation. Then, at a programmed stop, the operator is responsable ...
Rotational double-beam piezoelectric energy harvester impacting against a stop
(Elsevier, 2019-12)
In this paper, a low-frequency rotational piezoelectric energy harvester is proposed to operate out of resonance with the incorporation of a flexible stop. A numerical scheme is developed for the analysis of the contact ...
Stopping cross sections of TiO2 for H and He ions
(Springer, 2014-07)
Stopping cross sections of TiO2 films were measured for H and He ions in the energy intervals200−1500 keV and 250−3000 keV, respectively, using the Rutherford backscattering technique. Theoreticalcalculations were performed ...
Electronic stopping power of Ti, V and Cr ions in Ge and Au at 150–500 keV/u energies
(2017)
© 2017 Elsevier B.V.In this paper new experimental data are presented for the stopping power of Ti, V and Cr ions in Ge and Au, in the 150–500 keV/u energy range. The heavy ions at low energies are produced from the elastic ...
Electronic stopping power calculation for water under the Lindhard formalism for application in proton computed tomography
(2016-07-07)
Because of the behavior that charged particles have when they interact with biological material, proton therapy is shaping the future of radiation therapy in cancer treatment. The planning of radiation therapy is made up ...
Controle e supervisão de fonte ininterrupta de energia híbrida
(Universidade Federal de Santa MariaBrasilEngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia ElétricaCentro de Tecnologia, 2017-02-13)
This work presents contributions to the modeling, control and management of an
hybrid uninterrupted power supply (UPS) based on Otto cycle power generator set and
lead acid battery bank. The proposed configuration is ...