Výsledky vyhledávání - "Alfred F. Noels"

Seismic solar models from Ledoux discriminant inversions

Autor: Jørgen Christensen-Dalsgaard, A. V. Oreshina, G. Buldgen, Sébastien Salmon, Alfred F. Noels, Richard Scuflaire, Patrick Eggenberger, Thierry Corbard, V. A. Baturin

Publikováno v: Buldgen, G, Eggenberger, P, Baturin, V A, Corbard, T, Christensen-Dalsgaard, J, Salmon, S J A J, Noels, A, Oreshina, A V & Scuflaire, R 2020, ' Seismic solar models from Ledoux discriminant inversions ', Astronomy and Astrophysics, vol. 642, A36 . https://doi.org/10.1051/0004-6361/202037980
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 642, pp.A36. ⟨10.1051/0004-6361/202037980⟩
Astronomy and Astrophysics-A&A, 2020, 642, pp.A36. ⟨10.1051/0004-6361/202037980⟩
Astronomy & Astrophysics

The Sun constitutes an excellent laboratory of fundamental physics. With the advent of helioseismology, we were able to probe its internal layers with unprecedented precision. However, the current state of solar modelling is still stained by tedious

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::045b0cc9012fef4ccf1c9f7940b7b87c
https://pure.au.dk/portal/da/publications/seismic-solar-models-from-ledoux-discriminant-inversions(81c62168-040a-4c0d-89ad-7015985868c7).html

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Apsidal motion in the massive binary HD 152248 -- Constraining the internal structure of the stars

Autor: Marc-Antoine Dupret, Gregor Rauw, Sophie Rosu, Alfred F. Noels, M. Farnir, Sylvia Ekström

Apsidal motion in massive eccentric binaries offers precious information about the internal structure of the stars. This is especially true for twin binaries consisting of two nearly identical stars. We make use of the tidally induced apsidal motion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01e98d2b6ba3df1e7641ca4ed1a60207

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Testing the effects of opacity and the chemical mixture on the excitation of pulsations in B stars of the Magellanic Clouds

Autor: Josefina Montalbán, Thierry Morel, Sébastien Salmon, Andrea Miglio, Alfred F. Noels, Marc-Antoine Dupret

Publikováno v: Monthly Notices of the Royal Astronomical Society. 422:3460-3474

The B-type pulsators known as \beta Cephei and Slowly Pulsating B (SPB) stars present pulsations driven by the \kappa mechanism, which operates thanks to an opacity bump due to the iron group elements. In low-metallicity environments such as the Mage

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3d413214812d264305b65373e9eda69
https://doi.org/10.1111/j.1365-2966.2012.20857.x

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Chemistry of Methyl 1-Butyl-Cyclopropene-3-Carboxylate: The Role of Transition Metal in Reaction Control: Rhodium-Catalysed Synthesis of a Bicyclobutane, Coppercatalysed Dimerisation, Selective (Tl+++) Oxidation

Autor: André J. Hubert, Roger Warin, N. Conde-Petiniot, Alfred F. Noels, Philippe Teyssie

Publikováno v: Bulletin des Sociétés Chimiques Belges. 95:649-654

Some typical reactions of a cyclopropenecarboxylate(I) were tentatively controlled by the use of transition metal catalysts. The reaction of (I) with methyl diazoacetate (DAM) afforded a dihydropyrazine(III) which was further dehydrogenated photochem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::daf1f3862bfa372750ed749f15560f74
https://doi.org/10.1002/bscb.19860950808

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Transition-Metal-Catalysed Reactions of Diazoesters: Synthesis of Chrysanthemic and Permethric Acid Esters by Cyclopropanation of Conjugated Dienes

Autor: Philippe Teyssie, André J. Hubert, Alfred F. Noels, A. J. Anciaux, Albert Demonceau

Publikováno v: Bulletin des Sociétés Chimiques Belges. 93:949-952

Pyrethroid precursors (permethric and chrysanthemic acid esters) are efficiently synthesized by rhodium(II)-catalysed cyclopropanation of the properly substituted conjugated diene. Reaction selectivities depend on both the catalyst counter-ion and th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4fb66a792b075ab170aab976d7e7b1cc
https://doi.org/10.1002/bscb.19840931104

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Transition-Metal-Catalysed Reactions of Diazoesters. Insertion into C-H Bonds of Paraffins Catalysed by Bulky Rhodium(II) Carboxylates: Enhanced Attack on Primary C-H Bonds

Autor: Philippe Teyssie, André J. Hubert, Albert Demonceau, Alfred F. Noels

Publikováno v: Bulletin des Sociétés Chimiques Belges. 93:945-948

Rhodium(II) carboxylates associated with bulky ligands catalyse the insertion of carbalkoxycarbenes (generated from diszoesters) into C-H bonds of normal and branched alkanes with selectivities differing substantially from those associated with non-b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b22d7fb71a9ee86117df8f10c030b140
https://doi.org/10.1002/bscb.19840931103

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Novel Platinum(II)-Diaminobiotin Complexes. Their Synthesis and Characterisation

Autor: André J. Hubert, N. Nihant, Alfred F. Noels

Publikováno v: Bulletin des Sociétés Chimiques Belges. 100:497-502

The diaminobiotin ligand 1 (cis-3, 4-diamino-2-tetrahydrothiophene valeric acid) was reacted with potassium chloroplatinate and with diaquodiammine platinum(II) cation 3 to yield new platinum complexes which were coordinated in a bidentate fashion th

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https://doi.org/10.1002/bscb.19911000702

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CoRoT's view of newly discovered B-star pulsators: results for 358 candidate B pulsators from the initial run's exoplanet field data

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2009, 506, pp.471-489. ⟨10.1051/0004-6361/200911884⟩
Astronomy & Astrophysics, 506, 471-489
Astronomy & Astrophysics, 506, 1, pp. 471-489
Astronomy and Astrophysics

We search for new variable B-type pulsators in the CoRoT data assembled primarily for planet detection, as part of CoRoT's Additional Programme. We aim to explore the properties of newly discovered B-type pulsators from the uninterrupted CoRoT space-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8dda338014114fcd160618be43d21073
https://hdl.handle.net/2066/75326

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New tripodal iminophosphorane-based ethylene oligomerization catalysts

Autor: Alfred F. Noels, Federica Benvenuti, Laurence Beaufort, Lionel Delaude

Publikováno v: Journal of Molecular Catalysis A: Chemical. 283:77-82

Seven transition-metal complexes of general formula RC ( C H 2 NP ⁡ R ′ 3 ) 3 ) M X 2 based on new tripodal iminophosphorane ligands were investigated as initiators for the oligomerization of ethylene in the presence of aluminum co-catalysts usin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ef70f1d52be7d2e155416542bcda315
https://doi.org/10.1016/j.molcata.2007.12.012

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Synthesis of N-heterocyclic carbene precursors bearing biphenyl units and their use in ruthenium-catalyzed ring-opening metathesis polymerization

Autor: Alfred F. Noels, Lionel Delaude, Anna Maj, Albert Demonceau

Publikováno v: Journal of Organometallic Chemistry. 692:3048-3056

A range of new imidazolium and imidazolinium chlorides bearing biphenyl units on their nitrogen atoms was synthesized. They differed by the electron-withdrawing or -donating nature and the steric bulk of the substituents on their aromatic rings. Thes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5e4fc3dc6a8e2f20eed7d98cceb5548
https://doi.org/10.1016/j.jorganchem.2007.03.027

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