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Time reduction of light curing: Influence on conversion degree and microhardness of orthodontic composites
(Elsevier B.V., 2014-07-01)
Introduction: The aim of this study was to assess the influence of curing time and power on the degree of conversion and surface microhardness of 3 orthodontic composites. Methods: One hundred eighty discs, 6 mm in diameter, ...
Light- and time-dependent polymerization of dual-cured resin luting agent beneath ceramic
(Taylor & Francis AsOsloNoruega, 2008)
Crystal-field effects in Er 3 + - and Yb 3 + -doped hexagonal NaYF 4 nanoparticles
(American Physical Society, 2017-10-17)
Since the up-conversion phenomenon in rare-earths (REs) doped NaYF4 is strongly affected by the crystal electric field (CF), determining the CF parameters, wave functions, and scheme of the energy levels of the RE J ...
Towards a single photon frequency conversion
(Instituto Nacional de Astrofísica, Óptica y Electrónica, 2015)
Nanopartículas superparamagnéticas de óxido de ferro modificadas com Ln3+: preparação, caracterização estrutural, espectroscópica e magnética
(Universidade Federal de São Paulo, 2022-11-25)
O estudo e desenvolvimento de materiais nanoparticulados tem despertado o interesse da comunidade cientifica, como possíveis aplicações em áreas da engenharia, indústria e tecnologia. As nanopartículas superparamagnéticas ...
Study Of Multicomponent Fluoro-phosphate Based Glasses: Ho3+ As A Luminescence Center
(ELSEVIER SCIENCE BVAMSTERDAM, 2015)
Evaluation of the potential feedstock for biojet fuel production: Focus in the Brazilian context
(2022-01-01)
The Brazilian aviation sector aiming to reduce its greenhouse emissions up to 37% by 2030 and up to 43% by 2050 (compared to 2005) using alternative fuels. For this reason, the evaluation of potential feedstock was made ...
Dynamic modeling of the CO2 emissions behavior by fossil fuel combustion during the land sequence preparation and pre-harvest activities in a sugar cane crop
(Universidad del ValleColombia, 2017-01-30)
(Eng) This paper presents the results of a study pursuing the evaluation of the CO2 emissions behavior by fossil fuel combustion from the agricultural equipment used during the land sequence preparation and pre-harvest ...