Exact and Earth Sciences |
Recent Submissions
-
Large amplitude oscillations in a trapped dissipative electron gas
(2018) [Journal article]A collisional trapped non-neutral plasma is described by a hydrodynamical model in onedimensional geometry. For suitable initial conditions and velocity fields, the Lagrangian variables method reduces the pressure dominated ... -
Obliquely propagating electromagnetic waves in magnetized kappa plasmas
(2016) [Journal article]Velocity distribution functions (VDFs) that exhibit a power-law dependence on the high-energy tail have been the subject of intense research by the plasma physics community. Such functions, known as kappa or superthermal ... -
Stationary to nonstationary transition in crossed-field devices
(2016) [Journal article]The previous results based on numerical simulations showed that a cold electron beam injected in a crossed field gap does not reach a time independent stationary state in the space charge limited regime [P. J. Christenson ... -
Quasilinear analysis of loss-cone driven weakly relativistic electron cyclotron maser instability
(1995) [Journal article]This paper presents a quasilinear analysis of the relativistic electron cyclotron maser instability. Two electron popUlations are assumed: a low-temperature background component and a more energetic loss-cone population. ... -
Funções quadráticas e tecnologías móveis : ações cooperativas em um experimento no ensino médio
(2019) [Journal article]O presente texto é resultado de uma pesquisa realizada com estudantes do ensino médio e tratou da temática do ensino e aprendizagem de funções quadráticas. O celular, e seu uso em sala de aula, com o aplicativo de matemática ... -
Aprender a ensinar : memórias de professoras normalistas
(2018) [Journal article]O artigo apresenta registros comentados das falas de oito ex-alunas do Instituto de Educação General Flores da Cunha, de Porto Alegre, sobresuas memórias do Curso Normal e do início da docência no curso primário, entre os ... -
Partial characterization of graphs having a single large Laplacian eigenvalue
(2018) [Journal article]The parameter (G) of a graph G stands for the number of Laplacian eigenvalues greater than or equal to the average degree of G. In this work, we address the problem of characterizing those graphs G having (G) = 1. Our ... -
Optimal cut-off points for waist circumference in the definition of metabolic syndrome in Brazilian adults : baseline analyses of the Longitudinal Study of Adult Health (ELSA-Brasil)
(2018) [Journal article]Background: Waist circumference (WC) has been incorporated in the definition of the metabolic syndrome (MetS) but the exact WC cut-off points across populations are not clear. The Joint Interim Statement (JIS) suggested ... -
Lung cancer : changes in histology, gender, and age over the last 30 years in Brazil
(2017) [Journal article]Objective: To describe the trends in tumor histology, gender and age among patients with non-small cell lung cancer (NSCLC) treated with lung resection. The histology of lung cancer has changed in developed countries, and ... -
Evolução e elementos-chave do sistema de farmacovigilância do Brasil : uma revisão de escopo a partir da criação da Agência Nacional de Vigilância Sanitária
(2018) [Journal article]Esta revisão de escopo objetiva descrever e caracterizar o sistema de farmacovigilância do Brasil (SINAF) e averiguar o atendimento aos requisitos mínimos propostos pela Organização Mundial da Saúde para um desempenho ...
RSS 1.0
