Results 41 to 50 of about 925,626 (245)

Spectral Calibration for TEMPO (Tropospheric Emissions: Monitoring of Pollution): Algorithm Description and Trending of Spectral Performance

Earth and Space Science
The Tropospheric Emissions: Monitoring of Pollution (TEMPO) instrument provides continuous, high‐resolution observations of atmospheric pollutants over North America from geostationary orbit.
Weizhen Hou, Xiong Liu, John C. Houck, Heesung Chong, Christopher Chan Miller, David E. Flittner, James L. Carr, Kelly Chance, Huiqun Wang, Gonzalo González Abad, Caroline R. Nowlan, Jun Wang, Junsung Park, Nischal Mishra, John E. Davis, Raid M. Suleiman, Jean Fitzmaurice   +16 more
doaj   +1 more source

Preflight calibration of the Chinese Environmental Trace Gases Monitoring Instrument (EMI) [PDF]

Atmospheric Measurement Techniques, 2018
An environmental trace gases monitoring instrument (EMI) is a nadir-viewing wide-field imaging spectrometer, which aims to quantify the global distribution of tropospheric and stratospheric trace gases, and is planned to be launched on 9 May 2018. The
M. J. Zhao, F. Q. Si, H. J. Zhou, S. M. Wang, Y. Jiang, W. Q. Liu   +5 more
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Continuous Hue-Based Self-Calibration of a Smartphone Spectrometer Applied to Optical Fiber Fabry-Perot Sensor Interrogation

Sensors, 2020
Smartphone-based optical spectrometers allow the development of a new generation of portable and cost-effective optical sensing solutions that can be easily integrated into sensor networks.
Aleksandr Markvart, Leonid Liokumovich, Iurii Medvedev, Nikolai Ushakov   +3 more
doaj   +1 more source

Mn2+-activated dual-wavelength emitting materials toward wearable optical fibre temperature sensor

Nature Communications, 2022
Dual-wavelength emission materials can provide fluorescence intensity ratio technology with self-calibration features; their fabrication however, remains a challenge.
Enhai Song, Meihua Chen, Zitao Chen, Yayun Zhou, Weijie Zhou, Hong-Tao Sun, Xianfeng Yang, Jiulin Gan, Shi Ye, Qinyuan Zhang   +9 more
doaj   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

FEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey, Miriam Livier Llamas‐García, Gabriela M. Montero‐Morán, Leticia Santos, Samuel Lara‐González   +4 more
wiley   +1 more source

Modular Critical Element Recycling Platform Using a Nanoporous Additively Manufactured Gyroid

Advanced Engineering Materials, EarlyView.
A modular recycling platform integrates 3D‐printed nanoporous gyroid structures to enable efficient critical element recovery. This system utilizes a hierarchical architecture, combining macroscopic channels with polymerization‐induced nanoscale porosity. By systematically tuning structural wall thickness and resin formulation, the platform achieves an
Xiangyu Gao, Keldy Mason, Mert Gülçür, Rachel Paddock‐Lamb, Prince Alvin Fofanah, Zachariah A. Page, Michael Cullinan   +6 more
wiley   +1 more source

Concept for improved radiometric calibration of radiance sources at the CHB facility [PDF]

, 2010
The Calibation Home Base (CHB) is a facility for the calibration of airborne imaging spectrometers such as APEX, ROSIS and in the future ARES, and for field spectrometers. Absolute radiometric calibration in the spectral range of 350–2500 nm is currently
Schötz, Paul, Fries, Jochen, Gege, Peter, Haschberger, Peter, Lenhard, Karim, Schwarz, Christian, Schwarzmaier, Thomas   +6 more
core  

Measurement of Wavelength-Resolved Light Absorption by Aerosols Utilizing a UV-VIS Extinction Cell [PDF]

, 2005
The principle, technical details, and performance of the long path extinction spectrometer (LOPES), a new folded-path extinction cell with a spectral range from the mid-UV (200 nm) to the near infrared (1015 nm), is presented.
Schurath, Ulrich, Klein, Karl-Friedrich, Thielmann, Axel, Schurath, U., Möhler, Ottmar, Schmid, O., Gimmler, M., Schmid, Otmar, Fritzsche, L., Andreae, M. O., Petzold, Andreas, Fritzsche, Lutz, Schnaiter, M., Mohler, O. M., Thielmann, A., Helas, Günther, Andreae, Meinrat O., Petzold, A., Helas, G., Schnaiter, Martin, Gimmler, Melanie, Linke, Claudia, Klein, K. F., Linke, C.   +23 more
core   +1 more source

High‐Resolution Corrosion Fingerprinting of Alloy Libraries via Microdroplet Spectroelectrochemistry

Advanced Engineering Materials, EarlyView.
Ionic‐liquid microdroplet spectroelectrochemistry enables stable, localized electrochemical measurements over extended timescales. By coupling impedance spectroscopy, wetting analysis, finite‐element simulations, and operando Raman spectroscopy, it disentangles geometrical and electrochemical effects, opening new opportunities for rapid corrosion ...
Ekaterina Kurchavova, Oumaïma Gharbi, Mireille Turmine, Vincent Vivier   +3 more
wiley   +1 more source