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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 ...
Photopolymerization devises light intensity relation with physical translucid barriers use
(2020)
Abstract:
Nowadays, the use of halogen or light emission diode (LED) devices in dental attention is constant for almost any oral treatment. The need of providing an adequate light intensity for a correct photopolymerization ...
Woody plant encroachment constrains regeneration of ground-layer species in a neotropical savanna from seeds
(2022-01-01)
Woody plants have been encroaching into savannas on a global scale. Global climatic changes, along with changes to disturbance regimes, are considered to be the main drivers of this process. Particularly, many formerly ...
The Epstein-Glaser causal approach to the light-front QED(4). I: Free theory
(Elsevier B.V., 2014-12-01)
In this work we present the study of light-front field theories in the realm of the axiomatic theory. It is known that when one uses the light-cone gauge pathological poles (k(+))(-n) arises, demanding a prescription to ...
Carbon balance under a changing light environment
(Springer, 2020)
The natural environment of Antarctic seaweeds is characterized by changing seasonal light conditions. The ability to adapt to this light regime is one of the most important prerequisites for their ecological success. Thus, ...
Encapsulants for light-emitting diodes from visible light-cured epoxy monomers
(Wiley, 2013-01-16)
During the last decade, light-emitting diodes (LEDs) have replaced incandescent, fluorescent, and neon lamps due to their ability to produce high luminosity at low currents and voltages. LEDs are currently encapsulated by ...
Distinct germination responses may contribute to the distribution pattern of two Moquiniastrum species in different phytophysiognomies from the Brazilian savanna
(Elsevier B.V., 2016-08-01)
Understanding how germination traits can influence the distribution pattern of adult plants is still an important issue for seed ecologists and biologists. Here, we evaluated if seed germination responses to abiotic factors ...
Blue light attenuation mediates morphological and architectural acclimation of Vitis vinifera cv. Malbec to shade and increases light capture
(2018-10)
Grapevine is one of the most important fruit crops worldwide. Vineyard management practices affect light interception and spectral characteristics inside the canopy. Plant photoreceptors drive shade acclimation responses ...
Condições de iluminação em ambientes de uma escola de educação profissional de São José dos Pinhais
(Universidade Tecnológica Federal do ParanáCuritibaDepartamento Acadêmico de Construção Civil, 2014-04-14)
The concerns of light and environments has always been an important issue for mankind from its earliest times. Nowadays it is widely discussed in multiple Engineering areas. The working place and the environment’s lighting ...
Desenvolvimento de um módulo compacto de LED para substituir lâmpada de descarga em luminária de iluminação pública: Luminária Isla
(Universidade Tecnológica Federal do ParanáCuritibaDepartamento Acadêmico de Eletrotécnica, 2015-02-12)
This paper proposes the replacement of a discharge lamp by a LED compact module in a specific public lighting luminaire of Curitiba city. This aims to reduce energy consumption, to increase the useful life, the quality and ...