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See detailQu'est-ce que le moyen age?
Kurth, Godefroid ULg

Book published by Bloud (n.d.)

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See detailRecherches sur les proportions d'acide carbonique contenues dans l'air
Spring, Walthère ULg; Roland, Léon

in Mémoires couronnés et autres Mémoires publiés par l'Académie Royale des Sciences, des Lettres et des Beaux-arts de Belgique (n.d.), XXXVII

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See detailSpleen : analyse textuelle d’un poème de Léon-Paul Fargue
Tilkin, Françoise ULg; Mathonet, Anne

in Espace pour un humanisme européen (n.d.)

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See detailA Review of the Dempster-Shafer Theory of Evidence
Verly, Jacques ULg

Scientific conference (n.d.)

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See detailCours de chimie générale : Notions préliminaires
Spring, Walthère ULg

Learning material (n.d.)

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See detailZinc D-Ala-D-Ala carboxypeptidase
Ghuysen, Jean-Marie ULg

in CLAN MD (n.d.)

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See detailRetrieval of ethane from ground-based FTIR solar spectra using improved spectroscopy: recent burden increase above Jungfraujoch
Franco, Bruno ULg; Bader, Whitney ULg; Toon, G. C. et al

in Journal of Quantitative Spectroscopy & Radiative Transfer (n.d.)

An improved spectroscopy is used to implement and optimize the retrieval strategy of ethane (C2H6) from ground-based Fourier Transform Infrared (FTIR) solar spectra recorded at the high-altitude station ... [more ▼]

An improved spectroscopy is used to implement and optimize the retrieval strategy of ethane (C2H6) from ground-based Fourier Transform Infrared (FTIR) solar spectra recorded at the high-altitude station of Jungfraujoch (Swiss Alps, 46.5° N, 8.0° E, 3580m a.s.l.). The improved spectroscopic parameters include C2H6 pseudo-lines in the 2720-3100 cm-1 range and updated line parameters for methyl chloride and ozone. These improved spectroscopic parameters allow for substantial reduction of the fitting residuals as well as enhanced information content. They also contribute to limiting oscillations responsible for ungeophysical negative mixing ratio profiles. This strategy has been successfully applied to the Jungfraujoch solar spectra available from 1994 onwards. The resulting time series is compared with C2H6 total columns simulated by the state-of-the-art chemical transport model GEOS-Chem. Despite very consistent seasonal cycles between both data sets, a negative systematic bias relative to the FTIR observations suggests that C2H6 emissions are underestimated in the current inventories implemented in GEOS-Chem. Finally, C2H6 trends are derived from the FTIR time series, revealing a statistically-significant sharp increase of the C2H6 burden in the remote atmosphere above Jungfraujoch since 2009. Evaluating cause of this change in the C2H6 burden, which may be related to the recent massive growth of shale gas exploitation in North America, is of primary importance for atmospheric composition and air quality in the Northern Hemisphere. [less ▲]

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