Buscar
Mostrando ítems 1-10 de 8160
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 ...
Variation in canopy structure, leaf area, light interception and light use efficiency among Eucalyptus clones
(2020-05-01)
Differences in growth rates between Eucalyptus clones depend on differences in the acquisition of resources, and the efficiency of using resources to produce carbohydrates and grow wood. We examined differences in canopy ...
Proposal of LED-based linear lighting systems with low power consumption and high light distribution for laying hens
(Elsevier B.V., 2020-02-01)
The commercial production of eggs demands artificial illumination for reproductive stimulation of birds. The lighting systems currently used have limitations when applied in aviaries and need improvements to enable energy ...
Effects on Light Efficiency in Discharge and Solid-State Lighting Operation, Supplied by No-Sinusoidal Voltage
(Ieee-inst Electrical Electronics Engineers Inc, 2016-05-01)
The widespread use of discharge lamps and solid-state lighting is justified by its high-energy efficiency. However, the massive use causes degradation of power quality provided. In this context, the objective was the ...
Patterns of resource use efficiency in relation to intra-specific competition, size of the trees and resource availability in ponderosa pine
(Elsevier Science, 2014-01)
Patterns of resource use efficiency (RUE) in relation to intra-specific competition, size of the trees and resource availability are under debate. Also, the relationship between RUE and growth efficiency (GE) seems to be ...
Blue light attenuation mediates morphological and architectural acclimation of Vitis vinifera cv. Malbec to shade and increases light capture
(Pergamon-Elsevier Science Ltd, 2019-01)
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 ...
Distributed architecture proposal for efficient energy management of road lighting in urban environments
(Springer Science and Business, 2021)
The energy management in urban and interurban lighting is currently, mainly, based on a centralised or clustered model. The control is mainly based on the level of brightness needed to circulate, without taking into account ...
Combining Thickness Reduction and Light Trapping for Potential Efficiency Improvements in Perovskite Solar Cells
(Wiley VCH Verlag, 2018-03)
In this contribution it is shown that the efficiency of perovskite solar cells based on CH3NH3PbI3 can be increased further by combining thickness reduction of the perovskite layer and light trapping. A physical model for ...