Zobrazeno 1 - 10
of 158
pro vyhledávání: '"O. A. Pinto"'
Autor:
Diego Paiva Pires, Eduardo R. deAzevedo, Diogo O. Soares-Pinto, Frederico Brito, Jefferson G. Filgueiras
Publikováno v:
Communications Physics, Vol 7, Iss 1, Pp 1-8 (2024)
Abstract The quantum speed limit (QSL) is a fundamental lower bound on the evolution time for quantum systems, and its tightness has been observed to be dependent on the properties of the physical process. However, experimental studies exploring the
Externí odkaz:
https://doaj.org/article/d901a63d5396484cbf64b1e99fc21d51
Autor:
Pua ʻO Eleili Pinto, Reni Soon
Publikováno v:
Journal Committed to Social Change on Race and Ethnicity, Vol 10, Iss 1 (2024)
ʻŌiwi birthing practices are intimate relationships between family, community, and the environment. They support the physical, spiritual, emotional, and mental health of the whole family. In the Hawaiian Kingdom, with the introduction of institutio
Externí odkaz:
https://doaj.org/article/44aba0104ce64c2f85426688838dbe93
Publikováno v:
IEEE Access, Vol 10, Pp 82106-82118 (2022)
The objective of this work is to reduce the torque ripple and vibration in Switched Reluctance Motor (SRM) drives. To achieve such a goal, a two-step approach is proposed. In the first step, the reference current is profiled using an optimization met
Externí odkaz:
https://doaj.org/article/d01e7060ac6a4721b3f30eae94be771e
Autor:
Fernanda R. Vieira, Nuno V. Gama, Dmitry V. Evtuguin, Carlos O. Amorim, Vitor S. Amaral, Paula C. O. R. Pinto, Ana Barros-Timmons
Publikováno v:
Polymers, Vol 15, Iss 5, p 1074 (2023)
Rigid polyurethane foams (RPUFs) were synthesized using exclusively lignin-based polyol (LBP) obtained via the oxyalkylation of kraft lignin with propylene carbonate (PC). Using the design of experiments methodology combined with statistical analysis
Externí odkaz:
https://doaj.org/article/9b3217416690450aba09783cf777c4b1
Autor:
O. Harrington Pinto, M. S. P. Kelley, G. L. Villanueva, M. Womack, S. Faggi, A. McKay, M. A. DiSanti, C. Schambeau, Y. Fernandez, J. Bauer, L. Feaga, K. Wierzchos
Publikováno v:
The Planetary Science Journal, Vol 4, Iss 11, p 208 (2023)
Centaurs are minor solar system bodies with orbits transitioning between those of trans-Neptunian scattered disk objects and Jupiter-family comets (JFCs). 39P/Oterma (39P) is a frequently active centaur that has recently held both centaur and JFC cla
Externí odkaz:
https://doaj.org/article/60bc8005e8fb451c9bada803daa7c185
Autor:
Fernanda R. Vieira, Nuno V. Gama, Ana Barros-Timmons, Dmitry V. Evtuguin, Paula C. O. R. Pinto
Publikováno v:
ChemEngineering, Vol 6, Iss 6, p 95 (2022)
This study aimed to develop new rigid polyurethane foams (RPUFs) for thermal insulation based on kraft lignin, the main by-product of the pulp and paper industry. Crude lignin-based polyol (LBP) was obtained via the oxyalkylation of kraft lignin usin
Externí odkaz:
https://doaj.org/article/593dad8f84a146639653828749a5e94a
Autor:
Fernanda Rosa Vieira, Nuno Gama, Sandra Magina, Ana Barros-Timmons, Dmitry V. Evtuguin, Paula C. O. R. Pinto
Publikováno v:
Polymers, Vol 14, Iss 23, p 5305 (2022)
Lignin-based polyol was obtained via oxyalkylation reaction with propylene carbonate using eucalyptus kraft lignin isolated from the industrial cooking liquor by the Lignoboost® procedure. This lignin-based polyol (LBP) was used without purification
Externí odkaz:
https://doaj.org/article/02bdaeeed4924ad6835f9cbe8e6a4462
Autor:
Denilson Ferreira, João O. P. Pinto, Luiz E. B. da Silva, Marcio L. M. Kimpara, Luigi Galotto
Publikováno v:
Energies, Vol 15, Iss 23, p 9051 (2022)
The energy balance constitutes a powerful management instrument for government agencies, as it offers an overview of the energy situation of the country (or region) and serves as a guide for energy policies and monitoring of these policies. Although
Externí odkaz:
https://doaj.org/article/eca69a93b9414f35a205c5e3d3055db8
Publikováno v:
Energies, Vol 15, Iss 17, p 6409 (2022)
This paper describes the use of a Cascaded H-Bridge Multilevel Inverter to deal with the problem of partial shading in a photovoltaic system connected to the grid. Combined with the topology, it proposes the use of a virtual synchronous generator for
Externí odkaz:
https://doaj.org/article/3544aef851c942ce974b26f8ac0fafaf
Publikováno v:
Revista Brasileira de Ensino de Física, Vol 43 (2021)
O matemático Gregory Galperin desenvolveu, em seu artigo “Playing Pool with π”, um incrível método para calcular os dígitos do número π, com precisão arbitrária, fazendo uso de um sistema elementar da Física em Mecânica Clássica: coli
Externí odkaz:
https://doaj.org/article/cf0eac71656942a5bf37b7704fa209f5