Results 31 to 40 of about 73,275 (316)
Characterization and reliability of blue and white GaN-based LEDs submitted to current and thermal stress [PDF]
, 2022 The aim of this thesis work is to analyze reliability of blue and white GaN-based commercial LEDs. Reliability is indeed one of the key factors for devices success in the market of lighting solutions.
Bugno, Paolo
core
The influence exerted by LEDs and fluorescent tubes, of different colors, on regenerative processes and morphogenesis of Rebutia heliosa in vitro cultures [PDF]
Journal of Central European AgricultureThe paper traces how the light source and light color influence the regenerative processes and morphogenesis in vitro cultures of Rebutia heliosa. To establish the vitroculture of R.
Teodora Iuliana VIDICAN +7 more
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Applied Sciences, 2020 Light stimulation and biofloc technology can be combined to improve the efficiency and sustainability of tilapia production. A 73-day pilot experiment was conducted to investigate the effect of colored light on growth rates and nutritional composition of
Daniela Lopez-Betancur +5 more
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The Use of EnergySaving Ultraviolet Electrical Equipment in Agriculture
Сельскохозяйственные машины и технологии, 2022 It was noted that the optical radiation in the ultraviolet (UV) range plays an important role in agricultural production, and a lack of it leads to the deterioration of animal productivity.Research purpose The study aims to substantiate the parameters of
L. Yu. Yuferev
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Thin-film photonic crystal LEDs with enhanced directionality
, 2010 The use of photonic crystals for light extraction from light-emitting diodes (LEDs) gives the possibility to shape the farfield emission pattern. This is of particular interest for étendue-limited LED applications that require a more directional ...
Bergenek, Krister
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Operational field lighting optimization studies to maximize biological imaging contrast
St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2019 Using an experimental setup based on a dynamically controlled led lighting system, the optimal lighting conditions for contrast imaging of biological tissues in surgical operations were investigated.
Aladov Andrei +7 more
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Enhancing Capacity for Low Emission Development Strategies (EC-LEDS) Fact Sheets [PDF]
, 2013 Countries around the world face the challenge of maintaining long-term sustainable economic growth and development under the threat of climate change. By identifying and pursuing a sustainable development pathway now, they are better positioned to reach ...
Butheau, M., Sandor, D., Watson, A.
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, 2023 419429Thermo-mechanical reliability is one major challenge in solid-state lighting for automotive applications. Mismatches in the coefficients of thermal expansion (CTE) between high-power LED packages and substrates paired with temperature changes ...
Zippelius, Andreas +4 more
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Pump less wearable microfluidic device for real time pH sweat monitoring [PDF]
, 2009 This paper presents the fabrication and the performance of a novel, wearable, robust, flexible and disposable microfluidic device which incorporates micro-Light Emitting Diodes (μ-LEDs) as a detection system, for monitoring in real time mode the pH of ...
Benito-Lopez, F. +11 more
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The effect of radiation of LED modules on the growth of dill (Anethum graveolens L.)
Open Life Sciences, 2016 Light quality is thought to affect the growth and development of plants. We examined how light influences the growth and content of some chemical compounds in dill (Anethum graveolens L.). The plants were grown under different light quality. The share of
Frąszczak Barbara +3 more
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