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See detailNearby galaxies Catalog -- R. B. Tully
Manfroid, Jean ULg

in Ciel et Terre (1988), 104

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See detailThe Nebula around the Luminous Blue Variable WRAY 15-751 as seen by Herschel
Vamvatira-Nakou, Chloi ULg; Hutsemekers, Damien ULg; Royer, P. et al

in Massive Stars: From alpha to Omega (2013, June 01)

To understand the evolution of massive stars it is crucial to study the nebulae associated to Luminous Blue Variables which can reveal the star mass-loss history. We obtained far-infrared Herschel PACS ... [more ▼]

To understand the evolution of massive stars it is crucial to study the nebulae associated to Luminous Blue Variables which can reveal the star mass-loss history. We obtained far-infrared Herschel PACS imaging and spectroscopic observations of the nebula associated with the Luminous Blue Variable star WRAY 15-751. These images revealed a second nebula, bigger and cooler, lying in an empty cavity that probably delineates the remnant of the O-star bubble formed when the star was on the Main Sequence. The dust mass and temperature were derived from the modeling of the far-infrared SED. The analysis of the emission line spectrum revealed that the main nebula consists of a region of photoionised gas surrounded by a thin photodissociation region. Both regions are mixed with dust. The calculated C, N, O abundances, together with the estimated mass-loss rate, show that the nebula was ejected from the star during a Red Supergiant phase. This is compatible with the latest evolutionary tracks for a ~40 Mo star with little rotation. [less ▲]

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See detailNebulae around R Coronae Borealis stars - Clues to their evolutionary status?
Pollacco, D. L.; Hill, P. W.; Houziaux, Léo ULg et al

in Monthly Notices of the Royal Astronomical Society (1991), 248

Imaging and spectroscopy are presented of the classical R CrB star UW Cen obtained when the star was in a deep minimum. These show the presence of a faint reflection nebula, the inner parts of which ... [more ▼]

Imaging and spectroscopy are presented of the classical R CrB star UW Cen obtained when the star was in a deep minimum. These show the presence of a faint reflection nebula, the inner parts of which display two sets of symmetrical 'jets' centered on the star. The possibilities of whether the nebular structure can be associated with last thermal pulse evolution, white dwarf merger, or the mechanism causing the characteristic R CrB minima are discussed. [less ▲]

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See detailThe nebular spectra of two slow novae, DQ Herculis and RT Serpentis.
Swings, Polydore ULg; Struve, Otto

in Astrophysical Journal (1940), 92

The spectrum of Nova Herculis has been measured in the region λλ 3200-6700, and many new lines have been identified. The character of the spectrum has not changed greatly since the observations by Adams ... [more ▼]

The spectrum of Nova Herculis has been measured in the region λλ 3200-6700, and many new lines have been identified. The character of the spectrum has not changed greatly since the observations by Adams and Joy in 1935-1936, but the increased separation between the two visual components of the Nova has now made it possible to observe separately the two spectra. The ionization seems to be identically the same in the two objects, but some differences in the structure of the lines was noticed. Spectra taken with the slit along the major axis of the elongated image show a marked depression between the two outside components of the emission lines, while at least the preceding component of the binary shows a fairly strong central component between the two outside components. The observations are sensitive to conditions of seeing, and it is not possible at this stage to unravel the true nature of the spectroscopic structure of the lines. The spectrum of Nova Serpentis, which had an outburst in 1909 and which is known to have developed abnormally slowly, was last described by Joy in 1931. Since that time the spectrum has undergone marked changes: the lines of [Fe III], which were strong in 1931, are very weak on our spectrogram. Instead, [Ne III], [Ne V], and [Fe VI] are strong, in addition to H, He I, He II, and [O III]. [less ▲]

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See detailNebulised salbutamol administered during sputum induction improves bronchoprotection in patients with asthma
Delvaux, Muriel ULg; Henket, Monique ULg; Lau, L. et al

in Thorax (2004), 59(2), 111-115

Background: Inhalation of hypertonic or even isotonic saline during sputum induction may cause bronchospasm in susceptible patients with asthma, despite premedication with 400 mug inhaled salbutamol ... [more ▼]

Background: Inhalation of hypertonic or even isotonic saline during sputum induction may cause bronchospasm in susceptible patients with asthma, despite premedication with 400 mug inhaled salbutamol delivered by pressurised metered dose inhaler (pMDI). The bronchoprotection afforded by additional inhaled salbutamol administered through the ultrasonic nebuliser during sputum induction was investigated. Methods: Twenty patients with moderate to severe asthma underwent sputum induction by inhaling saline 4.5% (or 0.9% if post-bronchodilation forced expiratory volume in 1 second (FEV1) <65% predicted) for 10 minutes according to two protocols given 1 week apart in random order. At visit A the patients received 400 mg salbutamol administered through a pMDI + spacer 20 minutes before induction while at visit B the premedication was supplemented by 1500 mg nebulised salbutamol inhaled throughout the induction procedure. Both the investigator and the patients were blind to the nebulised solution used. FEV1 was recorded during sputum induction at 1, 3, 5, and 10 minutes. Sputum cell counts and histamine, tryptase and albumin levels in the supernatants were determined. Results: The mean (SE) maximal reduction in FEV1 over the 10 minute period of sputum induction was 11.7 (2.8)% at visit A, which was significantly greater than at visit B (2.6 (1.2)%; mean difference 9% (95% CI 2.7 to 15.4), p < 0.01). Total and differential sputum cell counts as well as albumin, tryptase, and histamine levels did not differ between the two visits. Conclusion: The addition of inhaled salbutamol through an ultrasonic nebuliser markedly improves bronchoprotection against saline induced bronchoconstriction in patients with moderate to severe asthma undergoing sputum induction without affecting cell counts and inflammatory markers. [less ▲]

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See detailNebulized Anti-IL-13 Monoclonal Antibody Fab' Fragment Reduces Allergen-Induced Asthma
Hacha, Jonathan ULg; Tomlinson, K; Maertens, Ludovic ULg et al

in American Journal of Respiratory Cell and Molecular Biology (2012), sous presse

Rationale: Interleukin-13 (IL-13) is a prototypic Th2 cytokine and a central mediator of the complex cascade of events leading to asthmatic phenotype. Indeed, IL-13 plays key roles in IgE synthesis ... [more ▼]

Rationale: Interleukin-13 (IL-13) is a prototypic Th2 cytokine and a central mediator of the complex cascade of events leading to asthmatic phenotype. Indeed, IL-13 plays key roles in IgE synthesis, bronchial hyperresponsiveness, mucus hypersecretion, subepithelial fibrosis and eosinophil infiltration. Objectives: We assessed the potential efficacy of inhaled anti-IL-13 monoclonal antibody Fab' fragment on allergen-induced airway inflammation, hyperresponsiveness and remodeling in an experimental model of allergic asthma. Anti-IL-13 Fab' was administered to mice as a liquid aerosol generated by inExpose® inhalation system in a tower allowing a nose-only exposure. Methods: BALB/c mice were treated by PBS, anti-IL-13 Fab' or A33 Fab' fragment and subjected to ovalbumin (OVA) exposure for 1 and 5 weeks (short term (ST) and long term (LT) protocols). Measurements and Main Results: Our data demonstrate a significant anti-asthma effect following nebulization of anti-IL-13 Fab' in a model of asthma driven by allergen exposure as compared to saline and non-immune Fab fragments. In short and long terms protocols, administration of the anti-IL-13 Fab' by inhalation significantly decreased bronchial responsiveness to methacholine, BALF eosinophilia, inflammatory cell infiltration in lung tissue, and many features of airway remodeling. Levels of pro-inflammatory mediators and matrix metalloprotease levels were significantly lower in lung parenchyma of mice treated with anti-IL-13 Fab'. Conclusions: These data demonstrate that an inhaled anti-IL-13 Fab' significantly reduces airway inflammation, hyperresponsiveness and remodeling. Specific neutralization of IL-13 in the lungs using an inhaled anti-IL-13 Fab' could represent a novel and effective therapy for the treatment of asthma. [less ▲]

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See detailUne nécessaire formation des enseignants-chercheurs ?
Poumay, Marianne ULg

Scientific conference (2011, March 21)

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See detailLa nécessité d'un inventaire du patrimoine culturel immatériel
Lempereur, Françoise ULg

in Géants d'ici et d'ailleurs (2012, January), (6-7), 24-30

Destinée essentiellement aux institutions et groupements qui ont en charge la sauvegarde du patrimoine culturel immatériel, cette présentation rapide justifie l'inventorisation de ce patrimoine, en ... [more ▼]

Destinée essentiellement aux institutions et groupements qui ont en charge la sauvegarde du patrimoine culturel immatériel, cette présentation rapide justifie l'inventorisation de ce patrimoine, en définit les responsabilités et propose une méthodologie de collectage et de mise à disposition publique des contenus [less ▲]

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See detailNécessité de nouveaux critères de remboursement pour traiter l'ostéoporose en Belgique
Bruyère, Olivier ULg; Bergmann, Pierre; Body, Jean-Jacques et al

in Ortho-Rhumato (2012), 10(5), 3

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See detailNécessité des études paléoécologiques pour une gestion raisonnée des tourbières hautes
Hindryckx, Marie-Noëlle ULg; Damblon, Freddy; Schumacker, René ULg

in Région wallonne, conservation de la nature (Ed.) colloque "Gérer la nature?" travaux n° 15 (1990)

A l'exemple des Hautes Fagnes, nous proposons de se baser sur une série d'études paléoécologiques pour entreprendre une gestion raisonnée des tourbières : cartographie et études comparatives de la ... [more ▼]

A l'exemple des Hautes Fagnes, nous proposons de se baser sur une série d'études paléoécologiques pour entreprendre une gestion raisonnée des tourbières : cartographie et études comparatives de la végétation et de son évolution; études hydrologiques de nappes et études paléoécologiques (pollens, macrorestes végétaux, charbons, taux d'humification et datations). Quelques pistes de solutions à la dégradation des tourbières hautes sont proposées. [less ▲]

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See detailNécessité et utopie
Campus, Ferdinand ULg

Speech (1951)

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See detailNécessité logique et nécessité réelle. Le concept de loi chez Windelband et Rickert
Dewalque, Arnaud ULg

Scientific conference (2005, January 28)

A travers les concepts de "Sollen" et de "Müssen", les néokantiens Heinrich Rickert et Wilhelm Windelband ont tenté de thématiser la distinction entre deux formes de nécessité: la nécessité logique (qui ... [more ▼]

A travers les concepts de "Sollen" et de "Müssen", les néokantiens Heinrich Rickert et Wilhelm Windelband ont tenté de thématiser la distinction entre deux formes de nécessité: la nécessité logique (qui se manifeste notamment dans le fait de "devoir juger") et la nécessité réelle (qui se manifeste dans les lois naturelles). [less ▲]

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See detailNecessity of phenotypic classification of inflammatory bowel disease.
Louis, Edouard ULg; VAN KEMSEKE, Catherine ULg; Reenaers, Catherine ULg

in Best practice & research. Clinical gastroenterology (2011), 25 Suppl 1

Inflammatory bowel diseases (IBD) are classically divided in Crohn's disease (CD) and ulcerative colitis (UC). However, these two entities are still heterogeneous and a further classification in ... [more ▼]

Inflammatory bowel diseases (IBD) are classically divided in Crohn's disease (CD) and ulcerative colitis (UC). However, these two entities are still heterogeneous and a further classification in subphenotypes is necessary. Clinical subphenotypes are easy to use, do not necessitate complicated tests and can already give very important information for the management of the patients. In CD, clinical subphenotypes are based on age at diagnosis, disease location and disease behaviour. Age at diagnosis allows to differentiating paediatric CD, classical young adult onset and more seldom CD of the elderly. These categories are associated with a different risk of development of complications and disabling disease and may have partly different pathophysiology. The classification on disease behaviour, including stricturin, penetrating or uncomplicated disease may have an impact on reponse to medical treatment and need for surgery. Finally the classification based on location is particularly relevant since it has been associated with different types of complications. Particularly ileal disease has been associated with the risk of surgery and colonic (particularly rectal) disease, with the risk of perianal disease. In UC, the classification in subphenotypes is essentially based on disease location, distinguishing proctitis, left-sided colitis and extensive colitis. This subclassification also has a very significant clinical relevance since extensive colitis has been associated with and increased risk of colon cancer, colectomy and even in some studies, mortality. [less ▲]

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See detailNecessity to compare the bacterial transcription factors beyond the HTH motif
Rigali, Sébastien ULg

Scientific conference (2002)

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See detailThe neck domain of myosin V
Terrak, Mohammed ULg; Staford, Walter; Lu, Renne

in Biophysical Journal (2004), 86

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See detailNécrologie : Dominique Keiffer
Kurth, Godefroid ULg

in Revue de l'Instruction Publique en Belgique (1902)

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