Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
See detailDifferent techniques to study the conformation of surfactins at interfaces
Deleu, Magali ULg; Gallet, Xavier; Brasseur, Robert et al

Poster (2001)

Detailed reference viewed: 3 (0 ULg)
Peer Reviewed
See detailDifferent treatments of linseed of culled cows and young bulls
Robaye, Vincent ULg; Dotreppe, Olivier ULg; Cabaraux, Jean-François ULg et al

in 58th Annual Meeting of the European Association for Animal Production (2007)

Detailed reference viewed: 11 (3 ULg)
Peer Reviewed
See detailDifferent universality classes for SOC in models driven by extremal dynamics
Vandewalle, Nicolas ULg; Ausloos, Marcel ULg

in Europhysics Letters [=EPL] (1997), 37(1), 1-6

We investigate a simple growth model. The model considers the growth of trees driven by extremal dynamics. Self-organized criticality (SOC) exhibited by the model is discussed. We point out that this tree ... [more ▼]

We investigate a simple growth model. The model considers the growth of trees driven by extremal dynamics. Self-organized criticality (SOC) exhibited by the model is discussed. We point out that this tree-like model does not seem to belong to any already studied SOC universality class. This is shown through a discussion of the dynamics and the so-called gap equation which does not hold here. [less ▲]

Detailed reference viewed: 11 (1 ULg)
Full Text
Peer Reviewed
See detailDifférentes estimations du libre parcours moyen en acoustique des salles : influence sur l’estimation de l’énergie acoustique par un modèle de diffusion
Foy, Cédric; Billon, Alexis ULg; Valeau, Vincent et al

Conference (2006, April)

La plupart des outils de prévision en acoustique des salles sont basés sur le principe du tir de rayons. La précision des résultats dépend alors du nombre de rayons choisi, nécessairement important quand ... [more ▼]

La plupart des outils de prévision en acoustique des salles sont basés sur le principe du tir de rayons. La précision des résultats dépend alors du nombre de rayons choisi, nécessairement important quand la géométrie simulée est grande et/ou disproportionnée, ce qui implique alors des temps de calcul élevés. Pour ce type de géométrie, une méthode alternative, basée sur la résolution numérique d’une équation de diffusion, permet en revanche de réaliser des prévisions acoustiques au prix d’un coût numérique modeste. Ce modèle repose en particulier sur un coefficient de diffusion caractérisant la pièce. Ce coefficient est théoriquement proportionnel au libre parcours moyen (LPM) du local considéré, vérifiant classiquement l’expression 4V/S (V étant le volume de la salle, S la surface des parois). Il est souvent admis que cette valeur est valide pour une salle de dimensions homogènes et dans le cas d’un champ réverbéré diffus. Néanmoins, dans la présente étude nous montrons que pour des locaux particulièrement allongés ou plats, l’atténuation sonore, directement dépendante du coefficient de diffusion, est surestimée par ce modèle. Il en est de même pour des locaux dont la loi de réflexion aux parois s’écarte d’une loi de Lambert. Ainsi, afin d’améliorer les performances du modèle de diffusion, la solution envisagée consiste d’une part, à réaliser un calcul numérique préliminaire du LPM et d’autre part, à considérer les approches analytiques alternatives du LPM rencontrées dans la littérature. La méthode numérique retenue est basée sur le suivi de particules sonores, et permet d’établir le LPM à partir de l’ensemble des distances de collision entre deux parois, pour des conditions de réflexion quelconques. Les résultats de ces approches analytiques et numériques sont présentés en terme d’atténuation sonore pour un local plat et un local allongé, et sont comparés à ceux issus d’autres méthodes numériques. [less ▲]

Detailed reference viewed: 227 (2 ULg)
Full Text
Peer Reviewed
See detailDifférentes facettes de la maladie de type Alzheimer
Salmon, Eric ULg

in Revue Médicale de Liège (2008), 63

Les maladies de type Alzheimer sont fréquentes. Les efforts réalisés en recherche clinique pour en améliorer le diagnostic précoce sont justifiés par les espoirs de traitements étiologiques. Dès à présent ... [more ▼]

Les maladies de type Alzheimer sont fréquentes. Les efforts réalisés en recherche clinique pour en améliorer le diagnostic précoce sont justifiés par les espoirs de traitements étiologiques. Dès à présent cependant, un diagnostic précoce est justifié par la possibilité de ralentir les conséquences symptomatiques de la maladie. Bien que l’évolution extrêmement variable soit fort préoccupante pour le patient et son entourage, l’objectif thérapeutique est d’adapter les conditions de vie aux capacités du patient (et de ses proches) et de maintenir une qualité de vie optimale. [less ▲]

Detailed reference viewed: 198 (21 ULg)
Full Text
Peer Reviewed
See detailLes différentes fonctions de la résolution de problèmes sont-elles présentes dans l’enseignement primaire en Communauté française de Belgique ?
Demonty, Isabelle ULg; Fagnant, Annick ULg

in Dorier, J-L.; Coutat, S. (Eds.) Enseignement des mathématiques et contrat social : enjeux et défis pour le 21 e siècle – Actes du colloque EMF2012 (2012)

Detailed reference viewed: 86 (8 ULg)
Full Text
See detailLes différentes fonctions du sol
Renneson, Malorie ULg; Colinet, Gilles ULg; Lienard, Amandine ULg et al

Conference given outside the academic context (2010)

Detailed reference viewed: 65 (13 ULg)
Full Text
See detailLes différentes formes de la contraction du myocarde ventriculaire
Fredericq, Léon ULg

in Archives Internationales de Physiologie (1929), XXXI

Detailed reference viewed: 11 (0 ULg)
Full Text
Peer Reviewed
See detailLes différentes manières de dire "jamais" en grec ancien
Denizot, Camille ULg

in Bulletin de la Société de Linguistique de Paris (2011), 106(1), 183-220

Le grec ancien dispose d’au moins quatre manières d’exprimer la négation adverbiale temporelle «ne...jamais»: οὐ...ποτέ, οὐ...πώποτε (en un seul mot ou en deux mots), οὐδέποτε et οὐδεπώποτε. En nous ... [more ▼]

Le grec ancien dispose d’au moins quatre manières d’exprimer la négation adverbiale temporelle «ne...jamais»: οὐ...ποτέ, οὐ...πώποτε (en un seul mot ou en deux mots), οὐδέποτε et οὐδεπώποτε. En nous appuyant sur un corpus de prose oratoire classique (Lysias et Démosthène), nous tentons de rendre compte de l’emploi d’une série en πώποτε (souvent traduite par «ne...jamais encore») à côté d’une série en ποτέ. Pour ce faire, nous mettons en évidence des différences de plusieurs sortes entre les deux séries. Il existe en effet des différences syntaxiques, puisque πώποτε est un terme à polarité négative, tout comme πώ qui entre dans sa formation, et des différences sémantiques, particulièrement aspectuelles et modales, liées au sens de πώ (habituellement traduit par «ne...pas encore»). Avec la série en πώποτε, sur le plan aspectuel, le procès négatif est susceptible de devenir positif au-delà d’un moment de référence défini dans le discours, et sur le plan modal, ce procès négatif s’oppose à un procès positif auquel on aurait pu s’attendre. La particularité du grec ancien provient des cas où l’indéfini πώ, terme à polarité négative, impose une lecture de πώποτε comme un indéfini de libre choix («jamais, à quelque moment que ce soit») et non comme un adverbe de phase («jamais encore»). [less ▲]

Detailed reference viewed: 101 (0 ULg)
Full Text
Peer Reviewed
See detailLes différentes modalités d’évaluation en accompagnement collectif.
Bernard, Nicolas; Faulx, Daniel ULg

in Education Permanente (in press)

L’accompagnement collectif constitue un mode de développement des individus et des équipes qui bénéficie aujourd’hui d’une abondante littérature méthodologique et théorique. Bien que cette question soit ... [more ▼]

L’accompagnement collectif constitue un mode de développement des individus et des équipes qui bénéficie aujourd’hui d’une abondante littérature méthodologique et théorique. Bien que cette question soit moins documentée actuellement, l’accompagnement collectif met en jeu également des démarches d’évaluation qui viennent en appui du processus. Basé sur quatre études de cas, cet article propose une modélisation des différentes possibilités d’évaluations, triées en fonction de quatre critères (niveaux, temporalités, contenus, formes). Chaque modalité est illustrée à l’aide d’un cas fil rouge. Cela débouche sur une multiplicité de possibilités d’application de l’évaluation au service de l’accompagnement. Nous terminons par discuter comment cette pratique peut être théorisée en termes de posture épistémologique. [less ▲]

Detailed reference viewed: 18 (0 ULg)
Full Text
Peer Reviewed
See detailLes différentes significations du mot "provision"
Bourgeois, Marc ULg

in Les provisions comptables et fiscales (2015)

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailLes differentes voies d'abord de l'oreillette gauche
RADERMECKER, Marc ULg; Limet, Raymond ULg

in Revue Médicale de Liège (2004), 59(9), 504-8

The knowledge of the anatomy of the atria and interatrial septum permits different routes to approach the left atrioventricular valve. The Waterston's or Sondegaard's groove approach is the most ... [more ▼]

The knowledge of the anatomy of the atria and interatrial septum permits different routes to approach the left atrioventricular valve. The Waterston's or Sondegaard's groove approach is the most frequently used, but other approaches such as Dubost'transseptal technique, vertical transseptal approach (Berreklouw-Guiraudon), biatrial inferior transseptal approach (Couetil) or Saksena's approach may be relevant in special situations. It is the purpose of this article to review the anatomic and technical basis of these different approaches and their respective merits. [less ▲]

Detailed reference viewed: 34 (0 ULg)
Peer Reviewed
See detailDifferential diagnosis of tachypnea in newborn calves : a field study
Rollin, Frédéric ULg; Dardenne, A; Danlois, F et al

in In Proceedings of the World Assoc. Buiatrics Congress (1998)

Detailed reference viewed: 87 (3 ULg)
Full Text
Peer Reviewed
See detailDifferential accumulation of mRNA for immediate early genes and heat shock genes in heart after ischaemic injury.
Plumier, Jean-Christophe ULg; Robertson, H. A.; Currie, R. W.

in Journal of Molecular and Cellular Cardiology (1996), 28(6), 1251-60

Ischaemic injury leads to the expression of heat shock and immediate early genes. Here the localization of this induction is examined by in situ hybridization analysis in serial sections of buffer ... [more ▼]

Ischaemic injury leads to the expression of heat shock and immediate early genes. Here the localization of this induction is examined by in situ hybridization analysis in serial sections of buffer-perfused isolated rat heart after 30 min of coronary artery occlusion. The accumulation of mRNA for hsc70, hsp70, c-fos, c-jun, and Erg-1 was localized coincidently and was restricted to the ischaemic area of the heart. mRNA for these genes was undetectable at the end of the ischaemic period (no reperfusion). After 30 min of reperfusion, accumulation of mRNA for hsc70, hsp70, c-fos, and c-jun was detectable and increased with further reperfusion. Within the area labelled for these gene products was a central area of less intense labelling which corresponded to the necrotic zone. The immediate early gene product, jun-B, was localized in both the ischaemic and the non-ischaemic area of the hearts. These results suggest that the area of the heart where heat shock and immediate early gene transcripts accumulate, while injured, recovers transcriptional activity, and that the central area where minimal heat shock and immediate early gene transcripts accumulate, does not recover transcriptional activity and is irreversibly injured. [less ▲]

Detailed reference viewed: 13 (0 ULg)
Full Text
Peer Reviewed
See detailDifferential Acute Impacts of Sleeve Gastrectomy, Roux-en-Y Gastric Bypass Surgery and Matched Caloric Restriction Diet on Insulin Secretion, Insulin Effectiveness and Non-Esterified Fatty Acid Levels Among Patients with Type 2 Diabetes.
Thomas, Felicity Louise ULg; Smith, Greg C.; Lu, Jun et al

in Obesity surgery (2016)

BACKGROUND: Bariatric surgery is an increasingly common option for control of type 2 diabetes (T2D) and obesity. Mechanisms underlying rapid improvement of T2D after different types of bariatric surgery ... [more ▼]

BACKGROUND: Bariatric surgery is an increasingly common option for control of type 2 diabetes (T2D) and obesity. Mechanisms underlying rapid improvement of T2D after different types of bariatric surgery are not clear. Caloric deprivation and altered levels of non-esterified fatty acid (NEFA) have been proposed. This study examines how sleeve gastrectomy (SG), Roux-en-Y gastric bypass (GBP) or matched hypocaloric diet (DT) achieves improvements in T2D by characterising components of the glucose metabolism and NEFA levels before and 3 days after each intervention. METHODS: Plasma samples at five time points during oral glucose tolerance test (OGTT) from subjects with T2D undergoing GBP (N = 11) or SG (N = 12) were analysed for C-peptide, insulin and glucose before surgery and 3-day post-intervention or after DT (N = 5). Fasting palmitic, linoleic, oleic and stearic acid were measured. C-peptide measurements were used to model insulin secretion rate (ISR) using deconvolution. RESULTS: Subjects who underwent GBP surgery experienced the greatest improvement in glycaemia (median reduction in blood glucose (BG) from basal by 29 % [IQR -57, -18]) and the greatest reduction in all NEFA measured. SG achieved improvement in glycaemia with lower ISR and reduction in all but palmitoleic acid. DT subjects achieved improvement in glycaemia with an increase in ISR, 105 % [IQR, 20, 220] and stearic acid. CONCLUSIONS: GBP, SG and DT each improve glucose metabolism through different effects on pancreatic beta cell function, insulin sensitivity and free fatty acids. [less ▲]

Detailed reference viewed: 9 (2 ULg)
Full Text
Peer Reviewed
See detailDifferential anti-influenza activity among allelic variants at the Sus scrofa Mx1 locus
Palm, Mélanie; Leroy, Michael; Thomas, Anne et al

in Journal of Interferon & Cytokine Research (2007), 27(2), 147-155

A promising way to oppose infectious challenges would be to improve the resistance of the target species through genetic selection. Theoretically, a candidate gene is available against influenza viruses ... [more ▼]

A promising way to oppose infectious challenges would be to improve the resistance of the target species through genetic selection. Theoretically, a candidate gene is available against influenza viruses since a resistance trait was fortuitously discovered in the A2G mouse strain. This trait was demonstrated to be correlated with the expression of a specific isoform of the type I interferon (IFN)-dependent protein MX, an isoform coded by a specific allele at the mouse Mx1 locus. Two allelic polymorphisms were described recently in the Sus scrofa homologous gene. In this study, the frequencies and distribution of both alleles were evaluated among European domestic pig and wild boar populations by PCR-RFLP, and the anti-influenza activity conferred by both MX1 isoforms was evaluated in vitro using transfection of Vero cells followed by flow cytometric determination of the fraction of influenza virus-infected cells among MX-producing and MX-nonproducing cell populations. A significant difference in the anti-influenza activity brought by the two MX1 isoforms was demonstrated, which suggests that a significant improvement of innate resistance of pigs by genetic selection might be feasible provided the differences found here in vitro are epidemiologically relevant in vivo. [less ▲]

Detailed reference viewed: 12 (2 ULg)
Full Text
Peer Reviewed
See detailDifferential asteroseismic study of seismic twins observed by CoRoT. Comparison of HD 175272 with HD 181420
Ozel, N.; Mosser, B.; Dupret, Marc-Antoine ULg et al

in Astronomy and Astrophysics (2013), 558

Context. The CoRoT short asteroseismic runs give us the opportunity to observe a large variety of late-type stars through their solar-like oscillations. We report the observation and modeling of the F5V ... [more ▼]

Context. The CoRoT short asteroseismic runs give us the opportunity to observe a large variety of late-type stars through their solar-like oscillations. We report the observation and modeling of the F5V star HD 175272. <BR /> Aims: Our aim is to define a method for extracting as much information as possible from a noisy oscillation spectrum. <BR /> Methods: We followed a differential approach that consists of using a well-known star as a reference to characterize another star. We used classical tools such as the envelope autocorrelation function to derive the global seismic parameters of the star. We compared HD 175272 with HD 181420 through a linear approach, because they appear to be asteroseismic twins. <BR /> Results: The comparison with the reference star enables us to substantially enhance the scientific output for HD 175272. First, we determined its global characteristics through a detailed seismic analysis of HD 181420. Second, with our differential approach, we measured the difference of mass, radius and age between HD 175272 and HD 181420. <BR /> Conclusions: We have developed a general method able to derive asteroseismic constraints on a star even in case of low-quality data. This method can be applied to stars with interesting properties but low signal-to-noise ratio oscillation spectrum, such as stars hosting an exoplanet or members of a binary system. The CoRoT space mission, launched on 2006 December 27, was developed and is operated by the CNES, with participation of the Science Programs of ESA, ESAs RSSD, Austria, Belgium, Brazil, Germany and Spain. [less ▲]

Detailed reference viewed: 8 (0 ULg)
Full Text
Peer Reviewed
See detailDifferential c-fos expression in the brain of male Japanese quail following exposure to stimuli that predict or do not predict the arrival of a female
Taziaux, Mélanie ULg; Lopez, J.; Cornil, Charlotte ULg et al

in European Journal of Neuroscience (2007), 25(9), 2835-2846

We investigated the effects of presenting a sexual conditioned stimulus on the expression of c-fos in male Japanese quail. Eight brain sites were selected for analysis based on previous reports of c-fos ... [more ▼]

We investigated the effects of presenting a sexual conditioned stimulus on the expression of c-fos in male Japanese quail. Eight brain sites were selected for analysis based on previous reports of c-fos expression in these areas correlated with sexual behaviour or learning. Males received either paired or explicitly unpaired presentations of an arbitrary stimulus and visual access to a female. Nine conditioning trials were conducted, one per day, for each subject. On the day following the ninth trial, subjects were exposed to the conditional stimulus (CS) for 5 min. Conditioning was confirmed by analysis of rhythmic cloacal sphincter movements (RCSM), an appetitive sexual behaviour, made in response to the CS presentation. Subjects in the paired condition performed significantly more RCSM than subjects in the unpaired group. Brains were collected 90 min following the stimulus exposure and stained by immunolhistochemistry for the FOS protein. Significant group differences in the number of FOS-immunoreactive (FOS-ir) cells were found in two brain regions, the nucleus taeniae of the amygdala (TnA) and the hippocampus (Hp). Subjects in the paired condition had fewer FOS-ir cells in both areas than subjects in the unpaired condition. These data provide additional support to the hypothesis that TnA is implicated in the expression of appetitive sexual behaviours in male quail and corroborate numerous previous reports of the involvement of the hippocampus in conditioning. Further, these data suggest that conditioned and unconditioned sexual stimuli activate different brain regions but have similar behavioural consequences. [less ▲]

Detailed reference viewed: 17 (3 ULg)