scholarly journals LED Lighting System

2003 ◽  
Vol 87 (Appendix) ◽  
pp. 229-230
Author(s):  
Hide Warashina ◽  
Makarand “Chips”Chipalkatti
Keyword(s):  
Lighting System ◽  
Led Lighting

scholarly journals Destabilization of Immersed Dense Granular Material Submitted to Localized Fluidization: An Experimental and Numerical Study

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Aboubacar Sidiki Dramé ◽  
Li Wang ◽  
Yanping Zhang
Keyword(s):  
Granular Material ◽  
Granular Medium ◽  
Experimental Approach ◽  
Solid Phase ◽  
Numerical Study ◽  
Lighting System ◽  
Led Lighting ◽  
Hydrogel Beads ◽  
Static Regime ◽  
As Solid Phase

An alternative experimental approach and a numerical analysis for the study of destabilization by localized fluidization of an immersed dense granular material are presented. To visualize the evolutions of the internal structure of the granular medium, the hydrogel beads, composed of about 99% of water and having substantially the same refraction indexes, are used as solid phase. A LED lighting system is used in place of a laser lighting system. As a result, the optical access restriction of porous structure is removed. A real economic alternative for the experimental study of fluid-grain coupling during destabilization by localized fluidization of a granular material is created. The experimental phenomenology presented in the literature is verified: the system passes successively through three different stationary regimes: static regime, fluidized cavity regime, and fluidized chimney regime. Some restrictions of using hydrogel beads as particles in the study of liquid-solid interaction are also discussed.

scholarly journals Optical Characterization of Japanese Papers for Application in the LED Lighting System with Human Sensitivity

2008 ◽  
Vol 32 (2) ◽  
pp. 218-221 ◽  
Author(s):  
Atsushi MOTOGAITO ◽  
Katsuhide MANABE ◽  
Yuuki YAMANAKA ◽  
Narito MACHIDA ◽  
Hideto MIYAKE ◽  
...  
Keyword(s):  
Optical Characterization ◽  
Lighting System ◽  
Led Lighting

scholarly journals Application of Wireless Power Transmission Led Lighting System in Propagation of Chrysanthemum and Strawberry

2016 ◽  
Vol 34 (4) ◽  
pp. 617-630
Author(s):  
N.B. NAM ◽  
N.P. HUY ◽  
V.Q. LUAN ◽  
H.T. TUNG ◽  
D.T. NHUT
Keyword(s):  
Power Transmission ◽  
Dry Weight ◽  
Fluorescent Light ◽  
Portable Devices ◽  
Lighting System ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Light Emitting ◽  
Led Lighting

ABSTRACT Wireless power transmission has been recently used to charge batteries in portable devices. This is the first study to combine this technology with light-emitting diodes (WPT-LP) for plant tissue culture application. We also present the comparison of the in vitro growth of chrysanthemum and strawberry plantlets under the new LED lighting system; LED - Uni-Pack (LP) system; LED tube and fluorescent light (FL). The results showed that fresh weight (1.42 g), dry weight (118.67 mg), plant height (5.68 cm), leaf area (3.59 cm2) and chlorophyll content (47.9 μg g-1) of chrysanthemum plantlets under the WPT-LP system were higher than those under FL and LED tube. Similar results were also recorded on the strawberry plantlets. Our results suggested that utilizing WPT-LP system saves the culture space considerably compared with the conventional downward lighting system with fluorescent lamps. The results also indicated that the subsequent growth and development of chrysanthemum and strawberry plantlets derived from WPT-LP system were either equal to or better than those from LP system under LED tube or FL.

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