Zobrazeno 1 - 10
of 12
pro vyhledávání: '"K C, Oliveira"'
Autor:
Karine K. C. Oliveira-Farias, Renata S. Farias, Miguel A. S. Neto, Marília E. de Souza, Leonardo L. Calado, Martin A. Montes, Ana P. S. Lima, Paulino Martinez, Maria R. M. Coimbra
Publikováno v:
Hydrobiologia. 849:1645-1658
Publikováno v:
Revista de Ensino de Ciências e Matemática. 12:1-18
A pandemia da Covid-19 provocou questionamentos e intensa busca por adaptação às aulas remotas emergenciais. A busca por metodologias para tornar o Ensino de Ciências mais dinâmico e próximo da realidade dos alunos inquietou muitos professores.
Publikováno v:
Eletrônica de Potência, Vol 12, Iss 2 (2007)
This paper presents a comparative study among maximum power point tracking methods for photovoltaic systems. The comparison takes into account steady state error, dynamic response and efficiency in a large power range. In special, an extensive biblio
Externí odkaz:
https://doaj.org/article/9dbeca0a154e4ae1841b742c44204703
Publikováno v:
Brazilian Journal of Petroleum and Gas. 11:239-254
Diatomite or diatomaceous earth is a sedimentary rock composed mainly of diatom siliceous skeletons with high porosity that is often used in adsorption processes. This work investigates the enhancement of diatomite properties using microemulsion syst
Publikováno v:
Brazilian Journal of Petroleum and Gas. 8:81-88
Produced waters are complex mixtures which contain a large number of contaminants including finely dispersed oil, metals, and gases such as H2S and CO2, that are originated from oil and natural gas. This work examines the use of solvent extraction to
Autor:
G. Coutinho, Emanoel Gomes de Moura, Alana das Chagas Ferreira Aguiar, K. M. Pinheiro, A. K. C. Oliveira
Publikováno v:
Soil Use and Management. 28:370-377
The efficiency in the use of nitrogen (N) and potassium (K) may be severely limited in soils with high rates of nutrient loss and that also tend to harden and restrict root growth. The choice of legume residues should take into account the nutrient s
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The main contribution of this paper is the proposal of new modulation techniques for three-phase transformerless neutral point clamped inverters to eliminate leakage currents in photovoltaic systems without requiring any modification on the multileve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3dba5a0c86cb4d8a5262fe338e45923
Publikováno v:
XI Brazilian Power Electronics Conference.
In this paper is proposed modulation techniques for reducing leakage current in grounded photovoltaic panels for three-phase transformerless neutral point clamped inverters, which appear if there is no galvanic isolation between the photovoltaic syst
Autor:
B, Bianco, I T N, Verreschi, K C, Oliveira, A D, Guedes, B B, Galera, M F, Galera, C P, Barbosa, M V N, Lipay
Publikováno v:
Scandinavian journal of immunology. 72(3)
Individuals with Turner syndrome (TS) clearly have an increased risk for autoimmune diseases. Recently, an allelic variation (C1858T) of the PTPN22 gene was revealed to be associated with the development of autoimmunity. Thus, the aim of this study w
Publikováno v:
2010 IEEE International Symposium on Industrial Electronics.
In some photovoltaic applications it is possible to remove the transformer of the system in order to reduce losses, cost and size. In transformerless systems the photovoltaic module parasitic capacitance can introduce leakage currents in which the am