Abstract
What is Brazil's official name?
Brazil
Hamza River Palace Billboard Brasil 1923 in Brazil Brazil's federal law 8112
Hamza_River-Abstract Palace-Brazil Billboard_Brasil-Abstract 1923_in_Brazil-Events Brazil's_federal_law_8112-Abstract
Hamza River (Portuguese: "Rio Hamza") is an unofficial name for what seems to be a slowly flowing aquifer in Brazil, approximately long. Its discovery was announced in 2011. The unofficial name is in honour of scientist Valiya Mannathal Hamza, of Brazil's National Observatory, who has undertaken research on the region for four decades. 
The Brazilian new capital, Brasília, hosts modern palaces, most designed by the city's architect Oscar Niemeyer. The Alvorada Palace is the official residence of the Brazil's president. The Planalto Palace is the official workplace. The Jaburu Palace is the official residence of Brazil's vice-president. 
Billboard Brasil is a monthly Brazilian magazine launched on October 10, 2009, with a print-run of over 40,000 copies. It is distributed nationwide by Brazil's biggest distributor Dinap. The "Billboard" charts printed in the magazine and on its website are accepted as Brazil's official charts. 
 "date unknown" *The Brazilian Society of Chemistry is founded. *Brazil's first radio broadcasting station, the Radio Society of Rio de Janeiro, is founded; it is still working under the name Rádio MEC.  
Brazil's federal law 8112 of 1990 is the statute of civil servants of the Union.  