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See detailThe 12C2/12C13C isotopic ratio in comets C/2001 Q4 (NEAT) and C/2002 T7 (LINEAR)
Rousselot, P.; Jehin, Emmanuel ULg; Manfroid, Jean ULg et al

in Astronomy and Astrophysics (2012), 545

Context. Measuring the carbon isotope abundance ratio in comets allows one to constrain the conditions in the outer protosolar nebula. Different measurements of the [SUP]12[/SUP]C/[SUP]13[/SUP]C ratio ... [more ▼]

Context. Measuring the carbon isotope abundance ratio in comets allows one to constrain the conditions in the outer protosolar nebula. Different measurements of the [SUP]12[/SUP]C/[SUP]13[/SUP]C ratio, using various molecules, have already been published for different solar system objects, such as the Sun, the Earth, the Moon, asteroids, planets, or comets. So far, all these measurements are consistent with [SUP]12[/SUP]C/[SUP]13[/SUP]C ~ 90, but significant differences have been observed. This ratio is remarkably constant in comets (91.0 ± 3.6) for studies based on the CN radical, but it presents stronger variations in studies based on other radicals. <BR /> Aims: This paper aims at measuring the [SUP]12[/SUP]C/[SUP]13[/SUP]C ratio in two bright Oort cloud comets using the [SUP]12[/SUP]C_2 and [SUP]12[/SUP]C[SUP]13[/SUP]C emission lines and an improved method. The ratios will be compared to those obtained for the same comets with another radical, CN. <BR /> Methods: We used the (2,1) and (1,0) bandheads of the [SUP]12[/SUP]C[SUP]13[/SUP]C, near 4723 and 4745 Å to measure the [SUP]12[/SUP]C/[SUP]13[/SUP]C ratio and compared their intensity to the [SUP]12[/SUP]C_2 lines of the same bands. We developed a model for interpreting observational data obtained at high resolution (~70 000) using the 8.2-m Kueyen telescope (UT2) of the Very Large Telescope (VLT) with the Ultraviolet and Visual Echelle Spectrograph (UVES) in two comets: C/2001 Q4 (NEAT) and C/2002 T7 (LINEAR). <BR /> Results: Our modeling has provided [SUP]12[/SUP]C/[SUP]13[/SUP]C = 85 ± 20 for C/2002 T7 (LINEAR) and 80 ± 20 for C/2001 Q4 (NEAT). These values are compatible with previous measurements performed with the CN radical. Based on observations made with ESO Telescopes at the Paranal Observatory under programmes ID 073.C-0525. [less ▲]

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See detail12C2/12C13C isotopic ratio in comets C/2001 Q4(NEAT) and C/2002 T7 (LINEAR)
Rousselot, P.; Jehin, Emmanuel ULg; Manfroid, Jean ULg et al

in EPSC Abstracts 2011 (2011)

The measurement of the carbon isotope abundances ratio in comets allows to constrain the conditions in the outer protosolar nebula. Different measurements of the 12C/13C ratio, using various molecules ... [more ▼]

The measurement of the carbon isotope abundances ratio in comets allows to constrain the conditions in the outer protosolar nebula. Different measurements of the 12C/13C ratio, using various molecules, have already been published for different solar system objects, such as the Sun, the Earth, the Moon, asteroids, planets or comets. So far all these measurements are consistent with 12C/13C' 90 but some significant differences have been seen. In comets this ratio is remarquably constant and equal to 91.0±3.6 [3] for studies based on CN radical but present larger variations with studies based on other radicals [1][5]. In this work we present a new analysis of this ratio, based on two different approachs for modeling the 12C2 and 12C13C emission spectrum and the (1,0) and (2,1) bandheads of 12C13C. Observational data obtained at high resolution (' 70, 000) using the 8.2-m Kueyen telescope (UT2) of the Very Large Telescope (VLT) with the Ultraviolet and Visual Echelle Spectrograph (UVES) instrument have been used to test our modeling and measure the 12C/13C ratio in two different comets: C/2001 Q4(NEAT) and C/2002 T7 (LINEAR). Our modeling and numerical results will be presented. [less ▲]

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See detail13. L'alcool peut-il rendre aveugle ?
Charlier, Corinne ULg; DENOOZ, Raphael ULg; DEVILLE, Marine ULg

in Seutin, Vincent; Scuvée-Moreau, Jacqueline; Quertemont, Etienne (Eds.) L'alcool en questions (2015)

L’alcool remonte le moral. Une petite cuite n’a jamais tué personne. Boire un café atténue l’effet de l’alcool. Le binge drinking est un fléau nouveau… De nombreuses idées reçues, certaines fondées ... [more ▼]

L’alcool remonte le moral. Une petite cuite n’a jamais tué personne. Boire un café atténue l’effet de l’alcool. Le binge drinking est un fléau nouveau… De nombreuses idées reçues, certaines fondées, d’autres pas, sont véhiculées à propos de l’alcool et de ses conséquences. L’alcool soulève aussi de multiples questions : L’alcool est-il une drogue ? L’alcool est-il aphrodisiaque ? L’alcoolisme est-il héréditaire ? Combien l’alcool coûte/rapporte-t-il à la société ? Peut-on guérir de l’alcoolisme ?… Ce livre a pour but de démont(r)er certaines idées reçues sur l’alcool et d’apporter des réponses aux questions que chacun se pose. Les auteurs ne se bornent pas à répondre par vrai ou faux, ils fournissent les explications, appuyées sur l’état des connaissances scientifiques actuelles, qui permettent d’infirmer ou de confirmer ces idées reçues ou de répondre à ces questions. Ils nuancent le propos lorsque la réponse n’est pas de l’ordre du tout ou rien. Il est indéniable que l’excès d’alcool est nuisible à la santé. Il existe cependant une littérature scientifique démontrant des effets positifs sur la santé de la consommation en quantités modérées de certaines boissons alcoolisées. Ce mélange d’effets positifs et négatifs explique que le public a développé une relation d’amour-haine avec l’alcool. Ainsi, les abstinents complets sont parfois qualifiés de rabat-joie. Les alcooliques chroniques (5 à 10 % des occidentaux, selon les études épidémiologiques !) sont, quant à eux, souvent trop vite jugés. Ce qui est certain c’est que l’alcoolo-dépendance est source de beaucoup de souffrances pour la personne et son entourage. Ces 41 réponses à des questions sur l’alcool visent à donner des balises au lecteur, littérature scientifique à l’appui. [less ▲]

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See detail13. L’Organisation des Nations Unies, ses organes et ses institutions spécialisées
Lika, Liridon ULg

in Cornet, Jacques (Ed.) Pratiques des Sciences sociales (2016)

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See detail[131I]iodotropapride: a cerebral dopamine D2 receptor ligand.
Cantineau, R.; Damhaut, Ph; Plenevaux, Alain ULg et al

Poster (1990, August 26)

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See detail132. Intrasellar arachnoïd cysts: diagnosis and treatment
Dubuisson, Annie ULg; Martin, Didier ULg; Bruggeman, L. et al

Conference (1995, May 07)

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See detail139 DOES QUALITY OF RADIOTHERAPY PREDICT OUTCOMES OF MULTICENTRE CLINICAL TRIALS? THE EORTC RADIATION ONCOLOGY GROUP EXPERIENCE.
Fairchild, Alysa; Collette, Laurence; Hurkmans, Coen W. et al

in Radiotherapy & Oncology (2012), 102

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See detail13C NMR des alcaloïdes des Strychnos: les dérivés de l'harmane et de l'usambarensine
Coune, Claude; Angenot, Luc ULg; Denoël, José

in Phytochemistry (1980), 19

13C NMR spectra of some tertiary and quaternary alkaloids are recorded and the signals assigned. Graphic interpretation of off-resonance spectra and substituent shielding effects together with the effect ... [more ▼]

13C NMR spectra of some tertiary and quaternary alkaloids are recorded and the signals assigned. Graphic interpretation of off-resonance spectra and substituent shielding effects together with the effect of Nb-methylation are utilized in the spectral interpretations. [less ▲]

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See detailThe 13C- vs the 15N-leucine infusion technique for the determination of the ileal endogenous N losses in pigs.
Leterme, Pascal; Thewis, André ULg; Seve, Bernard

in Lindberg, J. E.; Ogle, Brian (Eds.) Digestive Physiology of Pigs (1997)

Some methodological aspects of the isotope dilution technique using 15N-leucine as a marker of the endogenous N secretions (choice of the precursor pool, time of blood collection, estimation of the ... [more ▼]

Some methodological aspects of the isotope dilution technique using 15N-leucine as a marker of the endogenous N secretions (choice of the precursor pool, time of blood collection, estimation of the isotopique equilibrium) were studied in pigs. Their effect on the estimation of the ileal endogenous N flow was limited. When 15N-leucine was replaced by 13C-leucine, the ileal endogenous N flow obtained with 13C was much lower than that obtained with 15N (1.4 vs 5.7g N/kg DM intake, respectively). The validity of the 13C-leucine infusion technique is questioned. [less ▲]

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See detail13C/12C and fatty acids measurements in Posidonia oceanica beds.
Dauby, Patrick ULg; Lejaer, Christine; Antoine, Nathalie et al

Conference (1992, February)

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See detail13C/12C measurements in Posidonia oceanica beds
Dauby, Patrick ULg

Conference (1993, January)

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See detail13e Festival Images sonores : musique électronique live
Bawin, Marc-Henri ULg

Article for general public (2011)

Du 15 au 17 décembre 2011 se tiendra le 13e festival de musique électronique live et musique mixte Images Sonores. 3 soirées dans la salle du Théâtre Universitaire Royal de Liège pour découvrir des pièces ... [more ▼]

Du 15 au 17 décembre 2011 se tiendra le 13e festival de musique électronique live et musique mixte Images Sonores. 3 soirées dans la salle du Théâtre Universitaire Royal de Liège pour découvrir des pièces hors normes et rencontrer de jeunes talents. [less ▲]

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See detail13ième activité du CDS - Evaluation formative
Colaux, Catherine ULg

Report (2007)

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See detail14 steps to writing clearly
Van Damme, Hendrik ULg; Ceelen, W.; Detry, Olivier ULg et al

in Acta Chirurgica Belgica (2009), 109

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See detailA 14,000 yr elemental and lead isotopis record in a peat core in the south of Poland –results and interpretation
Tudyka, K.; De Vleeschouwer, F.; Pazdur, A. et al

Poster (2010)

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See detail14-3-3 testing in diagnosing Creutzfeldt-Jakob disease: a prospective study in 112 patients.
Lemstra, A. W.; van Meegen, M. T.; Vreyling, J. P. et al

in Neurology (2000), 55(4), 514-6

OBJECTIVE: To study the sensitivity and specificity of 14-3-3 testing in a prospective series of patients suspected of having Creutzfeldt-Jakob disease (CJD). BACKGROUND: The 14-3-3 protein immunoassay on ... [more ▼]

OBJECTIVE: To study the sensitivity and specificity of 14-3-3 testing in a prospective series of patients suspected of having Creutzfeldt-Jakob disease (CJD). BACKGROUND: The 14-3-3 protein immunoassay on CSF has favorable test characteristics as a premortem diagnostic tool in CJD. However, the 14-3-3 protein is a normal cellular protein expressed in various tissues, and its presence in CSF reflects extensive destruction of brain tissue as in CJD, but also in ischemic stroke and meningoencephalitis. METHODS: 14-3-3 was tested in the CSF of a prospective series of 110 consecutive patients suspected of having CJD. RESULTS: The sensitivity was 97% and the specificity was 87% in this series. False-positive results were mainly caused by stroke and meningoencephalitis. CONCLUSION: The 14-3-3 protein is a highly sensitive and specific marker for CJD when used in the appropriate clinical context. [less ▲]

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See detail14. Les Institutions économiques internationales
Lika, Liridon ULg

in Cornet, Jacques (Ed.) Pratiques des Sciences sociales (2016)

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