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Use of a Light Emitting Diode (LED) Array for Bilirubin Phototransformation
2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, 2005The newborn liver has a limited ability to process unconjugated bilirubin. Thus, infants are prone to an accumulation of unconjugated bilirubin, and can develop jaundice (hyperbilirubinemia). Recently, light emitting diodes (LEDs) which operate in the 410 - 490 nm wavelength range (peak at 475 nm) have been developed.
Harel, Rosen +4 more
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PLANT PHYSIOLOGICAL ACCLIMATION TO IRRADIATION BY LIGHT-EMITTING DIODES (LEDS)
Acta Horticulturae, 2007LEDs may be a suitable light source for future use as assimilation lighting in protected greenhouse cultivation. LEDs have properties which offer advantages compared to other light sources, but which also raise specific research questions. The narrow band spectrum of LEDs enables manufacturers to produce LED based lightsources specifically suitable for
S.W. Hogewoning +8 more
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Is the light emitting diode (LED) an ultimate lamp?
American Journal of Physics, 2000Simple diagrams are used to show the transformation of a thin “slab” of intrinsic semiconductor (direct gap, kelec=khole) from an ideal “flat-band” photopumped recombination-radiation light source into an ultimate lamp, a p–n junction light emitting diode (LED).
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Light emitting diode (LED) red buoy light
'Challenges of Our Changing Global Environment'. Conference Proceedings. OCEANS '95 MTS/IEEE, 2002This report details the results obtained with a small LED package mounted in a circle with a plastic thin film Fresnel lens. A package of 120 LEDs mounted in the above configuration was able to provide a red 4 mile nominal range light. This is the most common range light presently in use on buoys.
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The Application of Light Emitting Diode (
ABSTRACT Background Light‐emitting diode (LED) therapy employs narrow‐spectrum, incoherent light for photobiomodulation in dermatology, offering advantages of safety, non‐invasiveness, and ease of use. This review examines its mechanisms and applications in skin aesthetics, focusing on specific
Ziwei Guo, Kaihua Yuan
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Light-emitting-diode (LED) lighting for greenhouse tomato production
2013The cost of artificial lighting is a major expense in the greenhouse production industry, especially during the winter where supplemental lighting is required to maintain production. Current technology uses broad spectrum high pressure sodium lamps (HPS), which, despite being excellent luminous sources, are not the most efficient light source for plant
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