C
Claus J. Nielsen
Researcher at University of Oslo
Publications - 529
Citations - 12937
Claus J. Nielsen is an academic researcher from University of Oslo. The author has contributed to research in topics: Infrared spectroscopy & Raman spectroscopy. The author has an hindex of 44, co-authored 526 publications receiving 12076 citations. Previous affiliations of Claus J. Nielsen include University of Copenhagen & Vienna University of Technology.
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Products and mechanisms of the gas-phase reactions between NO3 and a series of alkenes
TL;DR: In this article, products and mechanisms for the gas phase reactions of NO3 radicals with a series of alkenes in air have been studied and the product distribution was found to be dependent on the alkyl substitution pattern around the double bond.
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The High-Resolution FTIR Far-Infrared Spectrum of Vinylamine
TL;DR: The far-infrared spectrum of formamide (HCONH2) has been recorded at high resolution and over 9000 vibration-rotation lines assigned and molecular parameters from the rovibrational analyses of the unperturbed 12(1)0 out-of-plane vibration band have been obtained.
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A study of the IR and UV-Vis absorption cross-sections, photolysis and OH-initiated oxidation of CF3CHO and CF3CH2CHO
TL;DR: In this paper, the effective quantum yields of photolysis and reaction rate coefficients for CF3CHO and CF3CH2CHO were measured under pseudo-natural conditions in the European simulation chamber, Valencia, Spain.
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Updated global warming potentials and radiative efficiencies of halocarbons and other weak atmospheric absorbers
Øivind Hodnebrog,Borgar Aamaas,Jan S. Fuglestvedt,G. Marston,Gunnar Myhre,Claus J. Nielsen,Marit Sandstad,Keith P. Shine,Timothy J. Wallington +8 more
TL;DR: In this paper, the radiative efficiencies (RE) and global warming potentials (GWP) values for compounds where experimental infrared absorption spectra are available are presented, based on a revised Pinnock curve, which gives RE as a function of wavenumber.
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Gas-Phase Reactions of Nopinone, 3-Isopropenyl-6-oxo-heptanal, and 5-Methyl-5-vinyltetrahydrofuran-2-ol with OH, NO3, and Ozone
TL;DR: In this paper, the rate constants of the reactions of nopinone, IPOH, and 5-methyl-5-vinyltetrahydrofuran-2-ol (MVT) were determined by long path FT-IR spectroscopy, and the oxidation products from the reactions between the OH radical and pinonaldehyde were investigated using GC−MS and HPLC.