[1] In 1916, he served in the position of teacher of chemistry and explosives at the Naval School, including the study of nuclear physics in his curriculum in the year of 1939.

[5] He was appointed Brazil's representative on the UNAEC in 1946, becoming a staunch opponent of the proposals of the Baruch Plan,[5] that could give Americans complete control of the global reserves of thorium and uranium, used later for the mass production of nuclear weapons.

[4] After the discovery of the first American nuclear weapons in 1945, Brazil quickly became one of the largest exporters of uranium to the United States.

[5] From 1947, Álvaro Alberto made several trips to other countries, with the purpose of scientific cooperation in the nuclear area.

[1] Álvaro Alberto met important names for the global scientific community during his career, such as Otto Hahn, Albert Einstein, Alberto Santos-Dumont, Alexander Cadogan, Frederick Osborn among others,[6] leaving a great legacy for the Brazilian and global scientific community, in defending cooperation in nuclear technology for peaceful purposes.