Results 1 to 10 of about 468,387 (267)

SnO2 Highly Sensitive CO Gas Sensor Based on Quasi-Molecular-Imprinting Mechanism Design

open access: yesSensors, 2015
Response of highly sensitive SnO2 semiconductor carbon monoxide (CO) gas sensors based on target gas CO quasi-molecular-imprinting mechanism design is investigated with gas concentrations varied from 50 to 3000 ppm.
Chenjia Li   +3 more
doaj   +3 more sources

A Cloud-Scale View of the Molecular Gas Disk in the Whirlpool Galaxy and Beyond [PDF]

open access: yesEPJ Web of Conferences, 2022
The nearby galaxy M51 (also known as the Whirlpool galaxy) hosts an iconic grand-design spiral pattern and both IRAM facilities conducted the first cloud-scale (∼50 pc resolution) survey of the molecular gas reservoir across a the disk of a massive star ...
Schinnerer Eva   +8 more
doaj   +1 more source

The Molecular Clouds in a Section of the Third Galactic Quadrant: Cloud Catalog

open access: yesThe Astronomical Journal, 2023
We present results of cloud catalogs of ^12 CO, ^13 CO, and C ^18 O ( J = 1–0) in a section of the third Galactic quadrant over (195° < l < 220°, ∣ b ∣ < 5°) from the Milky Way Imaging Scroll Painting project.
Chen Wang   +8 more
doaj   +1 more source

Mutual inhibition effect of sulfur compounds in the hydrodesulfurization of thiophene, 2-ethylthiophene and benzothiophene ternary mixture

open access: yesScientific Reports, 2021
The hydrodesulphurization of a model component and equimolar ternary mixture of thiophene, 2-ethylthiophene and benzothiophene over sulphided CoMo/γ-Al2O3 and CoMo/γ-Al2O3-Nb2O5 catalysts were investigated in a fixed bed flow reactor.
Catalina Calin   +6 more
doaj   +1 more source

Broadband Time-Resolved Absorption and Dispersion Spectroscopy of Methane and Ethane in a Plasma Using a Mid-Infrared Dual-Comb Spectrometer

open access: yesSensors, 2020
Conventional mechanical Fourier Transform Spectrometers (FTS) can simultaneously measure absorption and dispersion spectra of gas-phase samples. However, they usually need very long measurement times to achieve time-resolved spectra with a good spectral ...
Muhammad Ali Abbas   +5 more
doaj   +1 more source

3D Modeling of the Molecular Gas Kinematics in Optically Selected Jellyfish Galaxies

open access: yesThe Astrophysical Journal, 2023
Cluster galaxies are subject to the ram pressure exerted by the intracluster medium, which can perturb or even strip away their gas while leaving the stars undisturbed.
Cecilia Bacchini   +11 more
doaj   +1 more source

Molecular bridge-mediated ultralow-power gas sensing

open access: yesMicrosystems & Nanoengineering, 2021
We report the electrical detection of captured gases through measurement of the quantum tunneling characteristics of gas-mediated molecular junctions formed across nanogaps.
Aishwaryadev Banerjee   +8 more
doaj   +1 more source

VERTICO II: How H i-identified Environmental Mechanisms Affect the Molecular Gas in Cluster Galaxies

open access: yesThe Astrophysical Journal, 2022
In this VERTICO early science paper we explore in detail how environmental mechanisms, identified in H i , affect the resolved properties of molecular gas reservoirs in cluster galaxies.
Nikki Zabel   +19 more
doaj   +1 more source

Sensitive Spectroscopy of Acetone Using a Widely Tunable External-Cavity Quantum Cascade Laser

open access: yesSensors, 2018
We employed a single-mode, widely tunable (~300 cm−1) external-cavity quantum cascade laser operating around 8 µm for broadband direct absorption spectroscopy and wavelength modulation spectroscopy where a modulation frequency of 50 kHz was ...
Faisal Nadeem   +4 more
doaj   +1 more source

The State of the Molecular Gas in Post-starburst Galaxies

open access: yesThe Astrophysical Journal, 2023
The molecular gas in galaxies traces both the fuel for star formation and the processes that can enhance or suppress star formation. Observations of the molecular gas state can thus point to when and why galaxies stop forming stars.
K. Decker French   +9 more
doaj   +1 more source

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