Results 21 to 30 of about 4,950,651 (314)
Experimental Characterization of RGB LED Transceiver in Low-Complexity LED-to-LED Link [PDF]
Sensors, 2020 This paper proposes a low-complexity and energy-efficient light emitting diode (LED)-to-LED communication system for Internet of Things (IoT) devices with data rates up to 200 kbps over an error-free transmission distance up to 7 cm. The system is based on off-the-shelf red-green-blue (RGB) LEDs, of which the red sub-LED is employed as photodetector in
Mariam M. Galal +3 more
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TSEG - The Low Countries Journal of Social and Economic History, 2022 The Dutch Drankwet (hereinafter: Liquor Act) of 1881, the result of decades of temperance activism, was met with much criticism — little had come of the national legislation’s aim to reduce the consumption of alcohol. Even so, did this also mean that little changed in the sale of alcohol? This article examines how the Liquor Act was implemented locally
Schmidt, A. +2 more
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LED–LED portable oxygen gas sensor [PDF]
Analytical and Bioanalytical Chemistry, 2012 A portable instrument for oxygen determination, based on the quenching of phosphorescent octaethylporphyrin by gaseous O(2), has been developed using the fluorimetric paired emitter-detector diode technique (FPEDD). The instrument configuration consists of two light-emitting diodes (LEDs) facing each other, with an interchangeable support containing a ...
Perez de Vargas-Sansalvador, Isabel M. +5 more
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LED Receiver Impedance and Its Effects on LED-LED Visible Light Communications [PDF]
2018 IEEE International Conference on Communications Workshops (ICC Workshops), 2018 This paper experimentally demonstrates that the AC impedance spectrum of the LED as a photodetector heavily depends on the received optical power, which may cause the impedance mismatch between the LED and the post trans-impedance amplifier. The optical power dependent impedance of the LED is well fitted by a modified dispersive carrier transport model
Shang-Nin Li, Boyang Huang, Zhengyuan Xu
openaire +2 more sources
AIP Advances, 2012 The light output power (LOP) of vertical-type GaN-based light emitting diodes (LED) with surface roughness (texture) can be changed by texture size, density, and thickness of GaN film or by the combined effects of texture formation and thickness of GaN ...
Ho-Sang Kwack +6 more
doaj +1 more source
High-Sensitivity and High-Precision RI Sensing Using THz-Comb-Based Frequency Multiplication and Dual-Comb Active-Dummy Temperature Compensation [PDF]
EPJ Web of ConferencesThis paper presents a novel optical-comb-based refractive index sensor that simultaneously achieves high-sensitivity and high-precision by combining THz-comb-based frequency multiplication with active-dummy temperature compensation in a dual-comb ...
Higaki Masayuki +5 more
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Approaches to sex education: peer-led or teacher-led? [PDF]
, 2008 David Ross discusses a new study of school-based peer-led sex education in London and whether it reduced unintended teenage ...
Ross, David A +2 more
core +1 more source
Single-pixel birefringence imaging based on dual-comb spectroscopic polarimetry [PDF]
EPJ Web of ConferencesThis study presents a spectroscopic polarimetric imaging system that integrates single-pixel imaging (SPI) with dual-comb spectroscopic polarimetry (DCSP) to achieve scan-less birefringence mapping.
Tanimura Shogo +6 more
doaj +1 more source
Scientific Reports, 2022 The COVID-19 pandemic has created urgent demand for rapid detection of the SARS-CoV-2 coronavirus. Herein, we report highly sensitive detection of SARS-CoV-2 nucleocapsid protein (N protein) using nanoparticle-enhanced surface plasmon resonance (SPR ...
Taka-aki Yano +15 more
doaj +1 more source
Ecological corridors in spatial planning: lessons from over 10 years of contract-based experiences in the French Alps [PDF]
Sciences, Eaux & Territoires, 2021 Ten years after the introduction of laws resulting from a national consultative process (Grenelle de l'Environnement) in which ecological connectivity was strongly promoted, what can we say about the creation of “corridors” as a new element in spatial ...
QUÉTIER, Fabien +3 more
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