Results 251 to 260 of about 87,522 (313)
Photochemical strategies in divalent samarium catalysis. [PDF]
Beilstein J Org ChemKuribara T, Nemoto T.
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A low-cost three-wavelength illumination system for camera-based photoplethysmography imaging. [PDF]
HardwareXLabuda M +3 more
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Some of the next articles are maybe not open access.
A LED–LED-based photoplethysmography sensor
Physiological Measurement, 2007A high sensitivity, low power and low cost sensor has been developed for photoplethysmography (PPG) measurement. It uses standard light emitting diodes (LEDs) as both light emitter and detector, pulse-based signal conversion techniques instead of the classical analogue-to-digital convertors (ADCs) and a general purpose microcontroller for the ...
Stojanovic, Radovan, Karadaglic, Dejan
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2014
Your organization is structured around the formal co-operation of employees, customers, and partners for their mutual social, economic, and cultural benefit.
David Cushman, Jamie Burke
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Your organization is structured around the formal co-operation of employees, customers, and partners for their mutual social, economic, and cultural benefit.
David Cushman, Jamie Burke
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ACM SIGGRAPH 2019 Studio, 2019
Imagine an LED that turns itself on and off in response to light levels, or one that you can blow out like a candle. These are circuits you can build with just an Arduino, a resistor, an LED and a little code. In this workshop, we examine some surprising properties of LEDs to create systems that sense light, temperature and wind.
Paul H. Dietz, Jennifer (Ginger) Alford
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Imagine an LED that turns itself on and off in response to light levels, or one that you can blow out like a candle. These are circuits you can build with just an Arduino, a resistor, an LED and a little code. In this workshop, we examine some surprising properties of LEDs to create systems that sense light, temperature and wind.
Paul H. Dietz, Jennifer (Ginger) Alford
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LEDs and Use of White LED for Lighting
2014LED is an acronym for “light emitting diode.” The first important fact is that LED is an electronic component, a diode, a component that can conduct current in one direction and not the other. As many other electronics components, controlling a LED is an easy topic, in order to obtain different behavior. Due to the fact that a LED must produce light, a
Reggiani A, Farini A
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