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Three generations of luminous devices: a comparison in search of energy efficiency and ecologyca re
(4th International Congress on Alternative Energies, 2013-10-15)
ln this work a comparison is made between three generations of luminous devices, in order to have a quantitative estimation about the advantages of the new technologies on illumination sources based on Light Emitting Oiodes ...
Behavior of broilers reared under monochromatic and fluorescent light sources
(2016-01-01)
The study aimed to evaluate the behavior of broiler chickens reared in the blue and red light emitting diode (LED), using a fluorescent light as a control. The bird behaviors were recorded at 28, 35 and 42 d of grow-out ...
Assessment of the effectiveness of light-emitting diode and diode laser hybrid light sources to intensify dental bleaching treatment
(Informa Healthcare, 2011-05-01)
Objective. To evaluate the effectiveness of the color change of hybrid light-emitting diode (LED) and low-intensity infrared diode laser devices for activating dental bleaching and to verify the occurrence of a color ...
Assessment of the effectiveness of light-emitting diode and diode laser hybrid light sources to intensify dental bleaching treatment
(Informa Healthcare, 2011-05-01)
Objective. To evaluate the effectiveness of the color change of hybrid light-emitting diode (LED) and low-intensity infrared diode laser devices for activating dental bleaching and to verify the occurrence of a color ...
Luminária de LED com controle automatizado de luminosidade
(Universidade Tecnológica Federal do ParanáCornelio ProcopioEngenharia Elétrica, 2013)
This paper has as its main target the creation os a luminaire that uses as illumination source light emitting diodes (LED) and has an automatic brightness control in accordance with the brightness already existent in ...
Efficient green-emitting Tb3+-doped di-ureasil coating phosphors for near-UV excited light-emitting diodes
(2020-03-01)
Light-emitting diodes (LEDs) are replacing conventional lighting sources, like incandescent and fluorescent lamps, due to their higher efficiency, lower energy consumption and environmental friendliness characteristics. ...
Luminária de LED com controle automatizado de luminosidade
(Universidade Tecnológica Federal do ParanáCornelio ProcopioBrasilTecnologia em Automação IndustrialUTFPR, 2013-12-17)
The effect of halogen bulb and light-emitting diode light curing units on temperature increase and fibroblast viability [version 1; peer review: 1 approved, 1 approved with reservations]
(2021-01-01)
produced by halogen bulb (HAL) and light-emitting diode (LED) light curing units (LCUs) by irradiating dentin discs (0.5 mm and 1 mm thickness), and to evaluate their cytotoxic effects on fibroblast culture in the presence ...