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Hospital Lighting System Using Energy Efficient Light Sources
Journal of the Association of Engineers, India, 2017Lighting in hospital facilities should support the visual performance of hospital workers such as doctors and nurses who need to examine and observe patients, dispense medication, perform as per clinical procedures, and view displays and papers clearly.
Kamalika Ghosh, Snehargha Roy
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Efficient electric vehicle lighting using LEDs
Southcon/96 Conference Record, 2002Electric vehicles are very energy conscience. Replacing the inefficient incandescent lights with more efficient lights, such as light emitting diodes (LED), would conserve energy and help increase the vehicle's range. Because LEDs produce light at the needed wavelength for automotive use, less energy is consumed by the lighting fixture when compared to
Young, William R., Wilson, William
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An Adjusted Two‐Leaf Light Use Efficiency Model for Improving GPP Simulations Over Mountainous Areas
Journal of Geophysical Research: Atmospheres, 2020Recently, light use efficiency (LUE) models have been widely used for calculating gross primary productivity (GPP). Unfortunately, these models are only suitable for flat areas without considering the topographic effects on plant photosynthesis.
Xinyao Xie, Ainong Li
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Oecologia, 2010
Light absorption and use efficiency (LAUE mol mol(-1), daily gross photosynthesis per daily incident light) of each leaf depends on several factors, including the degree of light saturation. It is often discussed that upper canopy leaves exposed to direct sunlight are fully light-saturated. However, we found that upper leaves of three temperate species,
Kohei, Koyama, Kihachiro, Kikuzawa
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Light absorption and use efficiency (LAUE mol mol(-1), daily gross photosynthesis per daily incident light) of each leaf depends on several factors, including the degree of light saturation. It is often discussed that upper canopy leaves exposed to direct sunlight are fully light-saturated. However, we found that upper leaves of three temperate species,
Kohei, Koyama, Kihachiro, Kikuzawa
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High Illumination Efficiency Linear Light Source Using Light Emitting Diodes
Japanese Journal of Applied Physics, 2007We propose a linear light source using light emitting diode (LED) and a light diffusion bar for linear illumination. In order to get high illumination efficiency, the following factors of the illumination system have been investigated: (1) the effect of the diffusion area, (2) the effect of the relative size of LED and the light diffusion bar.
Di Feng +4 more
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, 2020
Maximal light-use efficiency (LUE), ɛmax, is a measure of the conversion efficiency of the photosynthetically active radiation absorbed by plants to net primary productivity (NPP), based on the principle that an optimal plant productive capability exists
Hugejiletu Jin +9 more
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Maximal light-use efficiency (LUE), ɛmax, is a measure of the conversion efficiency of the photosynthetically active radiation absorbed by plants to net primary productivity (NPP), based on the principle that an optimal plant productive capability exists
Hugejiletu Jin +9 more
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PHYSIOLOGICAL BASIS FOR LIGHT USE EFFICIENCY MODELS
Acta Horticulturae, 2002Modeling whole canopy photosynthesis is a fundamental step in orchard modeling. Simplification of this step is desirable in order to obtain practical and effective models. Light use efficiency models are very simple models of crop productivity, which are based on the proportionality between net primary productivity (NPP) and absorbed photosynthetically
A. Rosati, T.M. DeJong, G. Esparza
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Enhanced Echo Retrieval Efficiency Using Ultraslow Light
Advanced Photonics, 2011Using ultraslow light phenomenon, we report two-orders of magnitude enhanced photon echo efficiency in a rare-earth doped solid medium, where the enhancement is due to lengthened photon-atom interaction time in a dilute optical medium.
J. Hahn, B. S. Ham
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Light Conversion Efficiency of Calcium Tungstate Using A Light Intensifier Tube
Applied Optics, 1970A technique which may be used to determine the light conversion efficiency (defined below) of thin fluorescent crystals is presented. The illuminance associated with the visible spectrum emitted by the material under a pulse of x rays and incident on a light intensifier tube is amplified by the tube and is eventually recorded by a photographic film ...
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Estimating the seasonal maximum light use efficiency
SPIE Proceedings, 2014Light use efficiency (LUE) is a key parameter in estimating gross primary production (GPP) based on global Earth-observation satellite data and model calculations. In current LUE-based GPP estimation models, the maximum LUE is treated as a constant for each biome type. However, the maximum LUE varies seasonally.
Kanako Muramatsu +3 more
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