Universidade de Brasília

1 week ago | terra.com.br | |Universidade de Brasília

Dilma Roussef é presidente do Novo Banco do Desenvolvimento (NDB) - popularmente conhecido como Banco do BRICS - desde 2023, e continuará assim até 2030. Agora, no marco da presidência brasileira do BRICS, sua recondução à liderança do banco, ocorrida no final de março, simboliza não apenas a confiança política dos países-membros em sua administração, mas também a aposta na continuidade de uma agenda estratégica voltada à autonomia financeira do grupo.

Jan 9, 2025 | onlinelibrary.wiley.com | Qiang Zhang |Tiago Alves |Universidade de Brasília |Instituto de Geociências

Crescent, elliptical and elongated pockmarks are near-parallel to listric faults. Pockmarks are controlled by the geometry and attributes of listric faults. Differing fluid escape processes relate to two types of pockmarks. The studied pockmarks are evidence for fluid escape occurring since the Miocene. 1 Introduction Pockmarks are seafloor depressions considered as unequivocal indicators of fluid seepage (King and Maclean 1970; Hovland and Judd 1988).

Nov 19, 2024 | link.springer.com | Departamento de Matemática |Universidade de Brasília

AbstractThis paper investigates the degenerate non-local boundary value problem of logistic type $$ \left\{ \begin{array}{l} -\Delta u = \lambda u - b(x)u^p - a(x) u\displaystyle \int _\Omega c(y)|u(y)|^r\,dy \quad \hbox {in}\;\; \Omega , \\ u>0 \quad \text{ in }\;\; \Omega ,\ \ u=0 \quad \text{ on }\;\; \partial \Omega , \end{array} \right.

Oct 17, 2024 | academic.oup.com | Departamento de Física |Campus Gurupi |Instituto de Física |Universidade de Brasília

The magnetic phenomena on the solar surface have been the subject of several investigations over the last 400 years. The early indicator of the solar magnetic activity was the sunspot counting. Currently, the main sunspot indicators are the International Sunspot Number, the Sunspot Group Number, the Total Sunspot Area, and the Photometric Sunspot Index. Several improvements in observational techniques have allowed measuring the magnetic activity using solar/stellar spectra.

Aug 29, 2024 | link.springer.com | Belo Horizonte |Universidade de Brasília

AbstractWe prove that for each \(p\in (1,\infty )\) the energy functional associated with the Dirichlet system $$\begin{aligned} \left\{ \begin{array}{lll} -{\text {div}}(\phi _{p}(\left| \nabla u\right| )\nabla u)=\partial _{1}F(u,v) & \textrm{in} & \Omega ,\\ -{\text {div}}(\phi _{p}(\left| \nabla v\right| )\nabla v)=\partial _{2}F(u,v) & \textrm{in} & \Omega ,\\ u=v=0 & \textrm{on} & \partial \Omega , \end{array} \right.