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See detailExcretion and reexcretion of thermosensitive and wild-type strains of infectious bovine rhinotracheitis virus after co-infection or two successive infections.
Thiry, Etienne ULg; Brochier, B.; Saliki, J. et al

in Veterinary Microbiology (1985), 10(4), 371-80

Twelve cattle were divided into 2 groups. The first was intranasally co-infected with 2 strains of infectious bovine rhinotracheitis virus (Bovine herpesvirus 1; BHV 1): the thermosensitive vaccine strain ... [more ▼]

Twelve cattle were divided into 2 groups. The first was intranasally co-infected with 2 strains of infectious bovine rhinotracheitis virus (Bovine herpesvirus 1; BHV 1): the thermosensitive vaccine strain IBR/ts RLB106 and a Belgian field isolate IBR/Cu5. Reactivation of BHV 1 was induced by dexamethasone treatment 2 months later and again 5 months later for 3 animals that only reexcreted small quantities of virus during the first dexamethasone treatment. The second group was intranasally infected with IBR/Cu5. Two months later, an attempt to reinfect this group with IBR/ts RLB106 failed. Four months after the primary infection, these cattle were treated with dexamethasone. Except after reinfection and at the beginning or the end of the (re)excretion periods, excreted and reexcreted viruses replicated at 35, 37 and 40 degrees C, indicating the presence of the wild-type virus. Only one isolate, out of 116 cloned from the nasal exudates collected during the excretion and reexcretion periods, expressed the thermosensitive phenotype. This isolate was characterized by its mean plaque size as the IBR/ts RLB106 strain. The epizootiological significance of these findings is discussed, with emphasis on the weak spreading capacity of the ts vaccine strain and the possibility of emergence of recombinant viruses. [less ▲]

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See detailExcretion of purine derivatives in urine of Belgian Blue bulls following duodenal infusion of purines from Torula yeast.
Beckers, Yves ULg; Thewis, André ULg

in Giesecke, D. (Ed.) Proceedings of the Society of Nutrition Physiology (1994, September)

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See detailExcursion à l'orée de la chasse gardée du juge constitutionnel : La cour constitutionnelle et le contrôle de la constitutionnalité des arrêtés-lois de temps de guerre, des arrêtés-lois de pouvoirs extraordinaires et des décrets du Congrès national
Behrendt, Christian ULg

in Revue de la Faculté de Droit de l'Université de Liège (2007)

The article gives an overview upon the jurisprudence of the Belgian constitutional court in matters of decree-laws and extraordinary decree-laws.

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See detailExcursion à Werbomont (commune de Ferrières) le 5 août 1989. Prospection du carré I.F.B.L. G7.55.13.
Rouxhet, Serge ULg

in Natura Mosana (1990), 43(2), 50-53

Prospection floristique sur un carré d'un kilomètre de côté au nord-ouest de Werbomont (commune de Ferrières, province de Liège), réalisée le 5 août 1989. 250 espèces et sous-espèces ont été notées.

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See detailExcursion dans le Dévonien inférieur et la base du Dévonien moyen dans le Massif de la Vesdre
Dejonghe, L.; Hance, L.; Gerrienne, Philippe ULg et al

Conference (1991)

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See detailExcursion de la Société Royale de Botanique de Belgique et de La ligue belge pour la protection de la nature dans les cercles d’Eupen et de Malmédy
Fredericq, Léon ULg

in Bulletin de la Société Royale de Botanique de Belgique = Bulletin van de Koninklijke Belgische Botanische Vereniging (1920)

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See detailExcusabilité du failli, libération du conjoint et protection de son patrimoine propre
Pasteger, David ULg

in Revue de Droit Commercial Belge [= RDC] = Tijdschrift voor Belgisch Handelsrecht [=TBH] (2011)

"Le conjoint du failli, qui est codébiteur avec celui-ci d’une dette contractée avant la faillite par les deux époux et qui est dès lors personnellement tenu, est libéré de son obligation à cette dette ... [more ▼]

"Le conjoint du failli, qui est codébiteur avec celui-ci d’une dette contractée avant la faillite par les deux époux et qui est dès lors personnellement tenu, est libéré de son obligation à cette dette par l’effet de l’excusabilité" (Cass., 24 février 2011, R.D.C., 2011, pp. 879 et s.) [less ▲]

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See detail« Excusez-moi, monsieur » : les alexandrins dans La Nausée de Sartre
Purnelle, Gérald ULg

in Poétique, revue de théorie et d'analyse littéraires (2005), 144

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See detail"L'exécution des mesures provisoires"
Lecocq, Pascale ULg

in Van Compernolle, Jacques; Tarzia, G. (Eds.) Les meusres provisoires en droit belge, français et italien. Etude de droit comparé (1998)

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See detailExecutive dysfunction in Alzheimer's disease
Collette, Fabienne ULg; Van der Linden, Martial ULg; Salmon, Eric ULg

in Cortex : A Journal Devoted to the Study of the Nervous System & Behavior (1999), 35(1), 57-72

Executive functioning was examined in 20 patients with Alzheimer's disease (AD) and 20 normal elderly subjects. The results showed that AD patients present lower performance compared to control subjects ... [more ▼]

Executive functioning was examined in 20 patients with Alzheimer's disease (AD) and 20 normal elderly subjects. The results showed that AD patients present lower performance compared to control subjects in all executive tasks, confirming that some executive deficits may be present in the first stages of the disease. A factorial analysis suggested that these deficits can be related to two domains of the executive functions: the inhibition abilities and the capacity to co-ordinate simultaneously storage and processing of information. Moreover, the performance on these factors is correlated to different anterior and posterior cortical areas. [less ▲]

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See detailExecutive dysfunction in dementia
Collette, Fabienne ULg

Conference (2003, December)

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See detailExecutive dysfunctions in hypothyroidism and major depression
Constant, Eric; Adam, Stéphane ULg; Daumerie, Chantal et al

in Annals of General Psychiatry (2006, February 28), 5(Suppl 1), 565

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See detailExecutive function and grey matter atrophy in healthy aging: A voxel-based morphometry analysis
Manard, Marine ULg; Bahri, Mohamed Ali ULg; Salmon, Eric ULg et al

Poster (2014, June)

Introduction Executive functioning is one of the cognitive domain that declines in healthy aging (Salthouse, Atkinson, & Berish, 2003). In addition, neuroimaging studies pointed out diverse ... [more ▼]

Introduction Executive functioning is one of the cognitive domain that declines in healthy aging (Salthouse, Atkinson, & Berish, 2003). In addition, neuroimaging studies pointed out diverse neurobiological modifications associated to normal aging, such as reduced grey and white matter volumes and cortical thickness (Raz & Rodrigue; 2006). In that context, Voxel Based Morphometry (VBM; Ashburner & Friston, 2000) and Partial Least Square (PLS; McIntoch at al., 1996, 2004) were used to investigate the effect of grey matter atrophy on executive abilities in normal aging. Methods Thirty six young (age range: 18-30) and 43 healthy older (age range: 60-78) adults were included in this study. Executive functioning was assessed by inhibition, updating and shifting tasks (Miyake et al., 2000), and a composite score for general executive ability was created. Structural high resolution T1-weighted images were acquired with a 3T head-only scanner using a standard transmit-receive quadrature head coil (Siemens, Allegra, Erlangen, Germany). The structural images were segmented using VBM8 toolbox, normalized to the MNI stereotaxic space and the resulting grey matter volume images were smoothed (Gaussian kernel: FWHM 8mm). PLS analyses were performed to determine regional grey matter volume differences between young and older adults, and next to identify the regional grey matter volumes specifically associated to executive performance in older participants (p<0.001). PLS is a validated multivariate approach that robustly identifies whole brain activity patterns correlated with behavioral data or experimental design (i.e., scores, conditions or tasks). Results Behavioral data showed a significant age-related decline in executive functioning (t=-5.43; p<.001). MRI analyses showed that significant age-related grey matter volume decrease was mostly observed across a large network including frontal, parietal, and temporal regions. Moreover significant positive correlations between the executive score and the grey matter volumes in older participants were found in a subset of these cortical areas: the inferior, middle and superior frontal cortex, the pre and postcentral gyri, the anterior and middle cingulate cortex, the inferior and superior parietal regions, the retrosplenial cortex, and finally, the inferior, middle and superior temporal regions. Discussion This study first replicated that executive abilities decline with age (Salthouse et al., 2003). This age-related executive decline is related to specific cerebral regions within a large fronto-temporo-parietal network sensitive to age. Interestingly, the areas whose atrophy is linked to executive abilities are quite similar to those evidenced in functional neuroimaging studies in young participants (see Collette & Van der Linden, 2002; Collette, Hogge, Salmon, & Van der Linden, 2006 for reviews). Therefore, using PLS multivariate analyses, we demonstrated that executive changes in normal aging are not dependent on atrophy in frontal areas only but rather comes from a grey matter volume decrease in a large antero-posterior brain network. [less ▲]

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See detailExecutive functions
Collette, Fabienne ULg; Van der Linden, Martial ULg

in Morris, R. G.; Becker, J. T. (Eds.) The cognitive Neuropsychology of Alzheimer's disease (2004)

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See detailExecutive functions in normal aging: Impact of cognitive reserve and objective physical activity
Gilsoul, Jessica ULg; Simon, Jessica ULg; Collette, Fabienne ULg

Poster (2015, May 28)

It is now acknowledged that there exists a large inter-individual variability in age-related cognitive changes. According to Stern (2009), the cognitive reserve built up throughout the life span will make ... [more ▼]

It is now acknowledged that there exists a large inter-individual variability in age-related cognitive changes. According to Stern (2009), the cognitive reserve built up throughout the life span will make seniors more or less resilient to the deleterious effects of aging on cognition, with seniors having a high level of cognitive reserve being more prone to successfully cope with cognitive and neuronal changes. Currently, few studies have focused on the specific effects of different factors of cognitive reserve on cognition. Consequently, the objective of this study is to determine the impact of four determinants of cognitive reserve on executive functions in normal aging. Sixty-eight healthy participants aged 60 to 80 were enrolled. Regarding executive functions, Inhibition (Stroop test, Hayling test, TAP Incompatibility subtest), Shifting (TAP Flexibility subtest, Plus-Minus task), and Updating (Letter-Number Sequencing subtest from MEM III, Letter memory task, 2-back task) were assessed (Miyake et al., 2000). Cognitive reserve was measured by questionnaires assessing educational level, occupation, leisure activities and physical activity. Moreover, an accelerometer allowed quantitative measure of physical activity by recording body movements during two weeks. Group comparisons (p<0.05) showed that seniors with a high level of cognitive reserve (measured by a global composite z-score) have better updating abilities (Letter memory task and updating composite score). In order to test the influence of each cognitive reserve factor on executive functions, simple linear regressions (p<0.05) were performed. The results showed that the educational level accounts for a significant part of the variance in flexibility (TAP Flexibility) and updating (Letter-Number sequencing, 2-back and composite score). The occupational level accounts significantly for the variance of the updating composite score. Regarding the quantitative physical activity, the mean number of minutes per day in moderate or intense physical activity significantly predicted the updating composite score. These results indicate that the level of cognitive reserve is related to abilities in some executive tests, particularly updating abilities. Importantly, all aspects of cognitive reserve are not associated with the three executive processes. This indicates a specificity of the protective effect of cognitive reserve on executive abilities. [less ▲]

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See detailExecutive Summary of the of Solar Influences Data Centre Space Weather Pilot Project
Vanlommel, P.; Stegen, Koen; Warnant, René ULg et al

Report (2005)

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See detailExégèse de Paul. D. 39,3 (de aqua et aquae pluviae arcendae), 2,6
Gerkens, Jean-François ULg

in Tijdschrift voor Rechtsgeschiedenis (1995), 63(1995/1), 11-26

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See detailExegi monumentum… Notes sur Chronique des sentiments d'Alexander Kluge
Pieron, Julien ULg

Article for general public (2013)

Detailed reference viewed: 9 (2 ULg)