Results 11 to 20 of about 242,318 (140)
Obras subterrâneas nos aproveitamentos hidroelétricos em Portugal
Geotecnia, 2021 As obras subterrâneas encontram-se associadas aos aproveitamentos hidroelétricos nos seus elementos principais: na barragem, contribuindo na satisfação das exigências de comportamento estrutural e hidráulico-operacional, e na central e circuito ...
Celso Lima +4 more
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Influence of different acid etchings on the superficial characteristics of Ti sandblasted with Al2O3 [PDF]
Materials Research, 2013 Some implant manufactures use Al2O3 instead TiO2 powder to sandblast the machined dental implant, because Al2O3 powder is commercially more easily available and is cheaper than TiO2 powder.
Bruno Ramos Chrcanovic +2 more
doaj +1 more source
A fuzzy method for the usability evaluation of nuclear medical equipment
Brazilian Journal of Radiation Sciences, 2021 To avoid errors when handling nuclear medical equipment, it is important to develop products with a high degree of usability. This can be achieved by performing usability evaluations in the product development process to detect and mitigate potential ...
Cláudio Henrique dos Santos Grecco +4 more
doaj +1 more source
Polímeros, 2014 A produção de materiais que apresentem alto desempenho em suas aplicações exige avanços tecnológicos e científicos. Os elevados valores de resistência à tração e módulo de elasticidade, aliados à flexibilidade, baixa densidade e alta razão de aspecto ...
Kássio André Lacerda +5 more
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A Method for the evaluation of knowledge management systems
Brazilian Journal of Radiation Sciences, 2021 The explicit and tacit knowledge of workers constitute as valuable resources, as they enable organizations to perform their functions successfully. Such knowledge is derived from the qualification and experience of workers.
Claudio Henrique dos Santos Grecco +4 more
doaj +1 more source
Technical and economic assessment of trash recovery in the sugarcane bioenergy production system
Scientia Agricola, 2013 Mechanized sugarcane (Saccharum spp.) harvest without burning has been increasingly adopted in Brazil, increasing trash availability on the field. This study aims at showing the importance of using an integrated framework tool to assess technical and ...
Terezinha de Fátima Cardoso +10 more
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Revista Águas Subterrâneas, 2018 This study is a comparison of methodologies to determine the concentration of radon (222Rn) found in natural water sources used by the population of the cities of Poços de Caldas and Águas da Prata in the Poços de Caldas Plateau, in southeastern Brazil ...
Flavio Henrique de Souza Moreira +4 more
doaj +1 more source
Identification of Material Properties and Optimal Design of Magnetically Shielded Rooms
Magnetochemistry, 2021 In this paper, we propose an optimal design procedure for magnetically shielded rooms. Focusing on multi-layer ferromagnetic structures, where inner layers operate at very low magnetic field, we propose an identification method of the magnetic material ...
Aldo Canova +4 more
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Assessment of sugarcane trash for agronomic and energy purposes in Brazil
Scientia Agricola, 2013 Due to new possibilities for using sugarcane (Saccharum spp.) trash for electricity generation, and the production of 2nd generation ethanol and others chemicals, the interest for its recovery has increased. However, the question of how much trash can be
Henrique Coutinho Junqueira Franco +8 more
doaj +1 more source
, 2020 Falar de Geopolítica do Petróleo é falar dos cenários e dinâmicas políticas globais referentes ao principal recurso natural contemporâneo, que esteve em boa parte dos últimos tempos em disputa pelas grandes potências econômicas internacionais.
FGV Energia
core +2 more sources