Results 31 to 40 of about 124,907 (379)

Assessing the long-term variability of acetylene and ethane in the stratosphere of Jupiter [PDF]

open access: yesIcarus, 2018, 2018
Acetylene (C$_2$H$_2$) and ethane (C$_2$H$_6$) are both produced in the stratosphere of Jupiter via photolysis of methane (CH$_4$). Despite this common source, the latitudinal distribution of the two species is radically different, with acetylene decreasing in abundance towards the pole, and ethane increasing towards the pole.
arxiv   +1 more source

Interstitial pneumonitis after acetylene welding: A case report

open access: yesInternational Journal of Occupational Medicine and Environmental Health, 2014
Acetylene is a colorless gas commonly used for welding. It acts mainly as a simple asphyxiant. In this paper, however, we present a patient who developed a severe interstitial pneumonitis after acetylene exposure during aluminum welding.
Miran Brvar
doaj   +1 more source

A Tunable Optoelectronic Oscillator with Phase-to-Amplitude Modulation Transformation via an Acetylene Reference Cell

open access: yesPhotonics, 2023
Operation modes of the optoelectronic oscillator (OEO), based on a phase electrooptic modulator with an acetylene reference cell as a photonic filter, have been investigated.
Vladimir Lebedev   +8 more
doaj   +1 more source

Discovery of allenyl acetylene, H2CCCHCCH, in TMC-1. A study of the isomers of C5H4 [PDF]

open access: yes, 2021
We present the discovery in TMC-1 of allenyl acetylene, H2CCCHCCH, through the observation of nineteen lines with a signal-to-noise ratio ~4-15. For this species, we derived a rotational temperature of 7 +/- 1 K and a column density of (1.2 +/- 0.2)e13 cm-2.
arxiv   +1 more source

Vinylation of a Secondary Amine Core with Calcium Carbide for Efficient Post-Modification and Access to Polymeric Materials

open access: yesMolecules, 2018
We developed a simple and efficient strategy to access N-vinyl secondary amines of various naturally occurring materials using readily available solid acetylene reagents (calcium carbide, KF, and KOH).
Konstantin S. Rodygin   +2 more
doaj   +1 more source

Jupiter in the ultraviolet: acetylene and ethane abundances in the stratosphere of Jupiter from Cassini observations between 0.15 and 0.19 $μ$m [PDF]

open access: yes, 2020
At wavelengths between 0.15 and 0.19 $\mu$m, the far-ultraviolet spectrum of Jupiter is dominated by the scattered solar spectrum, attenuated by molecular absorptions primarily by acetylene and ethane, and to a lesser extent ammonia and phosphine. We describe the development of our radiative transfer code that enables the retrieval of abundances of ...
arxiv   +1 more source

Identification of single-site gold catalysis in acetylene hydrochlorination [PDF]

open access: yes, 2017
There remains considerable debate over the active form of gold under operating conditions of a recently validated gold catalyst for acetylene hydrochlorination.
Catlow, C. Richard A.   +14 more
core   +3 more sources

Effect of acetylene links on electronic and optical properties of semiconducting graphynes [PDF]

open access: yesarXiv, 2021
The family of graphynes, novel two-dimensional semiconductors with various and fascinating chemical and physical properties, has attracted great interest from both science and industry. Currently, the focus of graphynes is on graphdiyne, or graphyne-2. In this work, we systematically study the effect of acetylene, i.e., carbon-carbon triple bond, links
arxiv  

Infrared spectrum and stability of a π-type hydrogen-bonded complex between the OH and C2H2 reactants [PDF]

open access: yes, 2004
A hydrogen-bonded complex between the hydroxyl radical and acetylene has been stabilized in the reactant channel well leading to the addition reaction and characterized by infrared action spectroscopy in the OH overtone region. Analysis of the rotational
Davey, James B.   +4 more
core   +2 more sources

Theoretical study of the effect of halogen substitution in molecular porous materials for CO2 and C2H2 sorption

open access: yesAIMS Materials Science, 2018
Grand canonical Monte Carlo (GCMC) simulations of carbondioxide (CO$_2$) and acetylene (C$_2$H$_2$) sorption were performed in MPM-1-Cl and MPM-1-Br, two robust molecular porous materials (MPMs) that were synthesized by the addition of adenine to CuX$_2$
Douglas M. Franz   +3 more
doaj   +1 more source

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