Results 31 to 40 of about 16,868 (292)

An Artificial Neural Network to Eliminate the Detrimental Spectral Shift on Mid-Infrared Gas Spectroscopy

Sensors, 2023
We demonstrate the successful implementation of an artificial neural network (ANN) to eliminate detrimental spectral shifts imposed in the measurement of laser absorption spectrometers (LASs).
Sanghoon Chin, Jérôme Van Zaen, Séverine Denis, Enric Muntané, Stephan Schröder, Hans Martin, Laurent Balet, Steve Lecomte   +7 more
doaj   +1 more source

Recent Development of Gas Sensing Platforms Based on 2D Atomic Crystals

Research, 2021
Sensors, capable of detecting trace amounts of gas molecules or volatile organic compounds (VOCs), are in great demand for environmental monitoring, food safety, health diagnostics, and national defense. In the era of the Internet of Things (IoT) and big
Jiacheng Cao, Qian Chen, Xiaoshan Wang, Qiang Zhang, Hai-Dong Yu, Xiao Huang, Wei Huang   +6 more
doaj   +1 more source

Sol-gel based sensor for selective formaldehyde determination [PDF]

, 2010
We report the development of transparent sol–gels with entrapped sensitive and selective reagents for the detection of formaldehyde. The sampling method is based on the adsorption of formaldehyde from the air and reaction with β- diketones (for ...
Kanatharana, Proespichaya, Thavarungkul, Panote, Higson, Seamus P. J., Bunkoed, Opas, Davis, Frank   +4 more
core   +1 more source

Gas Sensor Based on 3-D WO3 Inverse Opal: Design and Applications

Sensors, 2017
A three-dimensional inverse opal (3DIO) WO3 architecture has been synthesized via a simple sacrificial template method. Morphology features of the 3DIO were characterized by scanning electron microscope (SEM) and its structure was characterized by X-ray ...
Ruiqing Xing, Yang Du, Xiaonan Zhao, Xiu Zhang   +3 more
doaj   +1 more source

Novel Au Nanoparticle-Modified ZnO Nanorod Arrays for Enhanced Photoluminescence-Based Optical Sensing of Oxygen

Sensors, 2023
Novel optical gas-sensing materials for Au nanoparticle (NP)-modified ZnO nanorod (NR) arrays were fabricated using hydrothermal synthesis and magnetron sputtering on Si substrates.
Baosheng Du, Meng Zhang, Jifei Ye, Diankai Wang, Jianhui Han, Tengfei Zhang   +5 more
doaj   +1 more source

Optimization measurement of hydrogen gas concentration by using high accuracy TDLAS [PDF]

EPJ Web of Conferences
Trace gas measurement is crucial for maintaining safety, quality control, and environmental protection across various industries. Tunable diode laser absorption spectroscopy (TDLAS) is frequently used for trace gas analysis due to its superior ...
Xiafukaiti Alifu, Lagrosas Nofel, Ogita Masakazu, Oi Nobuhiko, Ichikawa Yuji, Sugimoto Sachiyo, Asahi Ippei, Yamaguchi Shigeru, Shiina Tatsuo   +8 more
doaj   +1 more source

Optical fibre long period grating based selective vapour sensing of volatile organic compounds [PDF]

, 2010
The chemical sensing capabilities of an optical fibre long period grating (LPG) coated with a functional material are explored. The LPG period and coating thickness are chosen such that the mode transition region, characteristic of LPGs coated with ...
Tatam, Ralph P., Higson, Seamus P. J., Topliss, Stephen M., James, Stephen W., Davis, Frank   +4 more
core   +1 more source

Direct effects of ocean alkalinity enhancement in the Baltic Sea–results from in-silico experiments

Frontiers in Climate
To achieve carbon neutrality, ocean alkalinity enhancement (OAE) is currently being researched as a marine option for carbon dioxide removal (CDR). The approach of releasing calcite near the sediments and using the effect of enhanced mineral solubility ...
Anna-Adriana Anschütz, Jannine M. Lencina-Avila, Gregor Rehder, Bronwyn Cahill, Thomas Neumann, Hagen Radtke   +5 more
doaj   +1 more source

Investigation of the Frequency Shift of a SAD Circuit Loop and the Internal Micro-Cantilever in a Gas Sensor

Sensors, 2010
Micro-cantilever sensors for mass detection using resonance frequency have attracted considerable attention over the last decade in the field of gas sensing.
Zheng You, Jiahao Zhao, Peng Li, Shijie Yu, Liu Guan   +4 more
doaj   +1 more source

Comparative inverse analysis of satellite (MOPITT) and aircraft (TRACE-P) observations to estimate Asian sources of carbon monoxide [PDF]

, 2004
We use an inverse model analysis to compare the top-down constraints on Asian sources of carbon monoxide (CO) in spring 2001 from (1) daily MOPITT satellite observations of CO columns over Asia and the neighboring oceans and (2) aircraft observations of ...
D. G. Streets, Glen W. Sachse, Palmer, P. I., Sachse, G. W., Gille, J. C., Nehrkorn, T., Heald, C. L., Colette L. Heald, John C. Gille, Ross N. Hoffman, Jacob, D. J., Hoffman, R. N., Jones, D. B. A., Logan, J. A., Dylan B. A. Jones, Daniel J. Jacob, Streets, D. G., Thomas Nehrkorn, Paul I. Palmer, Jennifer A. Logan   +19 more
core   +1 more source