Results 31 to 40 of about 3,473,302 (276)

Three-dimensional radiative transfer effects on airborne and ground-based trace gas remote sensing [PDF]

Atmospheric Measurement Techniques, 2020
Air mass factors (AMFs) are used in passive trace gas remote sensing for converting slant column densities (SCDs) to vertical column densities (VCDs).
M. Schwaerzel, M. Schwaerzel, C. Emde, D. Brunner, R. Morales, T. Wagner, A. Berne, B. Buchmann, G. Kuhlmann   +8 more
doaj   +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

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

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +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

Extracellular vesicle lipidomics liquid biopsy reveals systemic and tumor microenvironment metabolic reprogramming in ovarian cancer

Molecular Oncology, EarlyView.
Extracellular vesicle (EV) lipidomic profiling of plasma and ascites from patients with high‐grade serous ovarian cancer and of ovarian cancer cell lines reveals enrichment of triglycerides (TGs), diacylglycerols (DGs), phosphatidylcholine (PCs), sphingomyelins (SMs), reflecting tumor metabolic reprogramming.
Shikha Rani, Dominic Guanzon, Andrew Lai, Katherin Scholz‐Romero, Sarah Reed, Edita Ritmejeryte, Rohan Lourie, Naven Chetty, Kaltin Ferguson, Carlos Salomon   +9 more
wiley   +1 more source

Multi-species trace gas sensing with dual-wavelength QCLs [PDF]

Applied Physics B, 2018
Instrumentation for environmental monitoring of gaseous pollutants and greenhouse gases tends to be complex, expensive, and energy demanding, because every compound measured relies on a specific analytical technique. This work demonstrates an alternative approach based on mid-infrared laser absorption spectroscopy with dual-wavelength quantum cascade ...
P. Morten Hundt, Béla Tuzson, Oleg Aseev, Chang Liu, Philipp Scheidegger, Herbert Looser, Filippos Kapsalidis, Mehran Shahmohammadi, Jérôme Faist, Lukas Emmenegger   +9 more
openaire   +1 more source