Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Joaquim Monteiro"'
Publikováno v:
Energies, Vol 17, Iss 6, p 1375 (2024)
Hydrogen storage in high-pressure tanks can be performed with different filling strategies. Many studies have been carried out on supplies with increasing pressure rates. The present work aims to carry out CFD numerical simulations, using Ansys Fluen
Externí odkaz:
https://doaj.org/article/344b2fe26d494118a5b2c440677fb92a
Publikováno v:
Energies, Vol 14, Iss 19, p 6299 (2021)
With the global warming of the planet, new forms of energy are being sought as an alternative to fossil fuels. Currently, hydrogen (H2) is seen as a strong alternative for fueling vehicles. However, the major challenge in the use of H2 arises from it
Externí odkaz:
https://doaj.org/article/b259e3f460f94a2ab9fe6e94537fa1b1
Publikováno v:
Energies, Vol 12, Iss 12, p 2324 (2019)
One of the main power quality issues that can affect variable speed drives (VSDs) is the occurrence of voltage sags on their AC power supply. Voltage sags can affect the inverter nominal operation, leading to a malfunction of the AC motor. This paper
Externí odkaz:
https://doaj.org/article/c8d05f3b7d00410d990b6d6743c02fed
Autor:
Andresa Baptista, Carlos Pinho, Gustavo Pinto, Leonardo Ribeiro, Joaquim Monteiro, Tiago Santos
Publikováno v:
Energies, Vol 12, Iss 9, p 1762 (2019)
The use of hydrogen as an alternative to fossil fuels for vehicle propulsion is already a reality. However, due to its physical characteristics, storage is still a challenge. There is an innovative way, presented in this study, to store hydrogen in c
Externí odkaz:
https://doaj.org/article/8c652e54d0cd4ed99d449dbf9883e812
Publikováno v:
Energies, Vol 10, Iss 6, p 779 (2017)
This paper proposes a Direct Matrix Converter operating as a Unified Power Flow Controller (DMC-UPFC) with an advanced control method for UPFC, based on the Lyapunov direct method, presenting good results in power quality assessment. This control met
Externí odkaz:
https://doaj.org/article/0cce4fa3f15e443ebfd9aeadbf0e3002
Publikováno v:
Acta Médica Portuguesa, Vol 23, Iss 5 (2010)
The objective of the current study was to adapt and validate the Roland Morris disability questionnaire (RMDQ) to the Portuguese patients because there are no European Portuguese psychometric instruments to evaluate patients suffering from low back p
Externí odkaz:
https://doaj.org/article/fe7b91d4564e4722ab8488fcb0c4598a
Autor:
Carla Costa, Gustavo Rocha, Marta Grilo, Ricardo Bianchi, Tânia Sotto Mayor, Joaquim Monteiro, Hercília Guimarães
Publikováno v:
Acta Médica Portuguesa, Vol 23, Iss 3 (2010)
Tumors affecting the fetus and newborn differ from those found in older children and adults, leading to new diagnostic and therapeutic challenges.To evaluate the main clinical aspects related to neonatal tumors.Retrospective analysis of clinical data
Externí odkaz:
https://doaj.org/article/1d9c137aadf14409a70b18b68a92885c
Publikováno v:
Acta Médica Portuguesa, Vol 22, Iss 5 (2009)
clinicians must be aware of the wide range of disorders causing acute abdomen in the newborn, a frequent condition that causes challenging problems from many aspects.to evaluate our incidence of acute abdomen in the newborn, main aetiologies, antenat
Externí odkaz:
https://doaj.org/article/54b43d12cfe7465d84e6c1efe02ec344
Publikováno v:
REAd, Vol 23, Iss 1, Pp 179-205
RESUMO Esse artigo objetivou analisar, comparativamente, as reações de clientes bancários a investimentos centrados no seu interesse e em iniciativas de responsabilidade socioambiental. Visando ter um referencial comparativo por tipo de empresa, f
Externí odkaz:
https://doaj.org/article/75e15d77558940bda7941e24cb2ab95d
Publikováno v:
Hydrogen Electrical Vehicles. :11-46