ELIAS FELIPE DE CARVALHO
2 resultados
Resultados de Busca
Agora exibindo 1 - 2 de 2
Artigo IPEN-doc 29153 GHG emissions, present energies, future with storage2022 - PENIN Y SANTOS, S.; CARVALHO, ELIAS F.Before the previous 252 years almost all human tasks depended on human muscles. The steam engine accelerates the intensive use of natural resources and in this period the ppm of CO2 in the atmosphere increased by 48%. The population was 750-800mi. The rapid growth to 7.8 billion, now on much better terms including food, uses approximately 615 Exa Joules (EJ) to meet its needs in electricity, transport, heating and industries, as well as to produce food. To stop hazardous emissions, a radical matrix change is underway. Solar, wind and other renewable energy must replace fossil fuels while maintaining the quality of energy, especially electrical energy. This article addresses these issues.Artigo IPEN-doc 28203 Determination of 238-U and 232-Th in soil samples collected near the Amazon Tall Tower Observatory, Brazilian Amazon2021 - TAPPIZ, B.; SILVA, P.S.C.; CARVALHO, E.F.; BOTIA, S.; LINHARES, H.M.S.M.D.; OSTERMANN, C.K.; BUSTILLOS, O.V.