Results 21 to 30 of about 5,765,441 (310)

LED-to-LED based VLC systems [PDF]

Proceedings of the Workshop on Internet of Lights, 2021
Visible light communication (VLC) is an emerging short-range wireless communication technology using the unlicensed light spectrum. Light Emitting Diode (LED) is used as VLC transmitter, while photodiodes or image sensors are used as receiver, depending on the applications and hardware constraints.
Muhammad Sarmad Mir, Behnaz Majlesein, Borja Genovés Guzmán, Julio Francisco Rufo Torres, Domenico Giustiniano   +4 more
openaire   +4 more sources

Evaluation of Machine Learning Feature Selection Techniques for Total Organic Carbon Prediction Using Well Logs in Source Rock Determination [PDF]

E3S Web of Conferences
The selection of appropriate input features is essential to the optimization of Machine Learning model performance, as it enhances prediction accuracy while lowering computational overhead in complex systems.
Longman Fodio S., Ojulari Rasheed O., Olatomiwa Olaniyi J., Abubakar Abdullahi, Abubakar Mudi, Balarabe Husaini J., Edeh Ifeanyichukwu, Yikarebogha Yibudongha, Joshua Olabisi O., Olulesho Stephanie I.   +9 more
doaj   +1 more source

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., Fay, Cormac, Fernández-Ramos, M.D., Diamond, Dermot, Benito-Lopez, Fernando, Capitán-Vallvey, Luis Fermin   +5 more
openaire   +5 more sources

To Be Led Astray?

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., Oosten, R.M.R. van, Theerens, A.C.   +2 more
openaire   +2 more sources

Experimental study of light output power for vertical GaN-based light-emitting diodes with various textured surface and thickness of GaN layer

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, Hyun Soo Lim, Hyun-Don Song, Sung-Hoon Jung, Hyun Kyong Cho, Ho-Ki Kwon, Myeong Seok Oh   +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 Conferences
This 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, Taue Shuji, Tokizane Yu, Hase Eiji, Minamikawa Takeo, Yasui Takeshi   +5 more
doaj   +1 more source

Ultrasensitive detection of SARS-CoV-2 nucleocapsid protein using large gold nanoparticle-enhanced surface plasmon resonance

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, Taira Kajisa, Masayuki Ono, Yoshiya Miyasaka, Yuichi Hasegawa, Atsushi Saito, Kunihiro Otsuka, Ayuko Sakane, Takuya Sasaki, Koji Yasutomo, Rina Hamajima, Yuta Kanai, Takeshi Kobayashi, Yoshiharu Matsuura, Makoto Itonaga, Takeshi Yasui   +15 more
doaj   +1 more source

Single-pixel birefringence imaging based on dual-comb spectroscopic polarimetry [PDF]

EPJ Web of Conferences
This 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, Hase Eiji, Shibuya Kyuki, Asahara Akihumi, Tokizane Yu, Minamikawa Takeo, Yasui Takeshi   +6 more
doaj   +1 more source

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, Wai Pang Ng, Richard Binns, Ahmed Abd El Aziz   +3 more
openaire   +4 more sources

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, David A Ross, Ross David A   +2 more
core   +1 more source