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See detailDoes fluid intelligence protect from age-related decline in cognitive control ?
Manard, Marine ULg; Carabin, Delphine; Collette, Fabienne ULg

in Proceedings of the BAPS - SEPEX meeting (2012, May 11)

Age-related difficulties have been reported on proactive control whereas reactive control seems to remain intact. This study investigated the potential influence of fluid intelligence capacity on the age ... [more ▼]

Age-related difficulties have been reported on proactive control whereas reactive control seems to remain intact. This study investigated the potential influence of fluid intelligence capacity on the age-related decline in proactive control. We used a working memory recognition paradigm involving proactive or reactive cognitive control by manipulating the interference level across items. 80 young adults (18-29 years old) and 80 healthy older adults (60-89 years old) were included. The main results revealed significant effects of age and fluid intelligence capacity on sensitivity to interference. As expected, reactive control performance remained intact with aging (similar interference effect in the two groups). In contrast, we observed a larger interference effect in the proactive condition in aging. Finally, older participants with similar level of fluid intelligence to young adults showed no proactive control age-related decrement. Beyond the fact that this study confirms the selective age-related decline in proactive control, it also indicates that the level of fluid intelligence influences the efficiency of proactive control in aging. [less ▲]

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See detailDoes Fomalhaut A Have an Asteroid-belt Analog?
Su, Kate Y. L.; Rieke, George; Defrere, Denis ULg et al

in American Astronomical Society Meeting Abstracts (2016, January 01)

Fomalhaut plays an important role in the study of debris disks and small bodies in other planetary systems. The proximity and luminosity of the star make key features of its debris like the water ice-line ... [more ▼]

Fomalhaut plays an important role in the study of debris disks and small bodies in other planetary systems. The proximity and luminosity of the star make key features of its debris like the water ice-line easily accessible. Here we present ALMA cycle 1, 870 μm (345 GHz) observation targeted at the inner part of the Fomalhaut system with a synthesized beam of 0.45"x0.37" (~3 AU linear resolution at the distance of Fomalhaut) and a rms of 26 μJy per beam. The high angular resolution and sensitivity of the ALMA data enable us to place strong constraints on the nature of the warm excess revealed by Spitzer and Herschel observations. We detect a point source at the star position with a total flux consistent with thermal emission from the stellar photosphere. No structures that are brighter than 3 σ are detected in the central 15 AUx15 AU region. Modeling the spectral energy distribution using parameters expected for a dust-producing planetesimal belt indicates a radial location in the range ˜8-15 AU. This is consistent with the location where ice sublimates in Fomalhaut, i.e., an asteroid-belt analog. We also provide a new interpretation for the emission structure in the inner 10 AU region revealed by interferometric measurements at 2 and 8-13 μm as dust naturally connected to this proposed asteroid belt by Poynting-Robertson drag, dust sublimation, and magnetically trapped nano grains. [less ▲]

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See detailDoes foraging plasticity favours adaptation to new habitats in fire salamanders? Preliminary data
Manenti, Raoul; Denoël, Mathieu ULg; Ficetola, Gentile Francesco

Conference (2013, August 23)

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See detailDoes formal 0-3 years old child care availability boost employment rate of mothers ? Panel data based evidence from Belgium
Dujardin, Claire; Fonder, Muriel; Lejeune, Bernard ULg

Conference (2016, June 03)

In 2003, a new multi-annual program aimed at increasing the availability of formal child care for 0-3 year old children was launched in Wallonia, the French-speaking part of Belgium. This paper is ... [more ▼]

In 2003, a new multi-annual program aimed at increasing the availability of formal child care for 0-3 year old children was launched in Wallonia, the French-speaking part of Belgium. This paper is interested in evaluating if this increased availability of formal child care resultedin a higher employment rate for women with at least one child under 3. To this end, we use a difference-in-differences approach based on municipality-level panel data, taking advantage of the fact that the increase in availability of formal child care differed greatly across municipalities. We find that the raise in child care availability significantly increased the maternal employment rate, but to a lesser extent than expected, most likely because of a substantial crowding-out effect. [less ▲]

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See detailDoes formal child care availability for 0-3 year olds boost mothers' employment rate? Panel data based evidence from Belgium
Dujardin, Claire; Fonder, Muriel; Lejeune, Bernard ULg

E-print/Working paper (2015)

In 2003, a new multi-annual program aimed at increasing the availability of formal child care for 0-3 year old children was launched in Wallonia, the French-speaking part of Belgium. This paper is ... [more ▼]

In 2003, a new multi-annual program aimed at increasing the availability of formal child care for 0-3 year old children was launched in Wallonia, the French-speaking part of Belgium. This paper is interested in evaluating if this increased availability of formal child care resulted in a higher employment rate for women with at least one child under 3. To this end, we use a difference-in-differences approach based on municipality-level panel data, taking advantage of the fact that the increase in availability of formal child care differed greatly across municipalities. We find that the raise in child care availability significantly increased the maternal employment rate, but to a lesser extent than expected, most likely because of a substantial crowding-out effect. [less ▲]

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See detailDoes gestational diabetes influence foetal organ function ?
Guffins, Amandine ULg; FARHAT, Nesrine ULg; GKIOUGKI, Evangelia ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 99

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See detailDoes high school program choice affect academic performance? Evidence for Economics
Lefevre, Mélanie ULg

Conference (2015, April 02)

This study evaluates the impact of the choice of the Economics elective course in secondary school on the performance in Economics at the University level. While several studies look at the impact on ... [more ▼]

This study evaluates the impact of the choice of the Economics elective course in secondary school on the performance in Economics at the University level. While several studies look at the impact on performance of the number of hours of mathematics in secondary school, less has been made regarding the impact of the secondary school Economics program. We match survey data from 360 students enrolled in the first year of the bachelors program in HEC-Management School of University of Liège, with administrative data and exam results. The methodological challenge is that students who choose Economics elective course in secondary school are likely to be different, in terms of motivation, from other students. To get rid of this potential bias, we approximate motivation using self-reported reasons for the choice of the elective courses, but also participation to non-mandatory tests and preparations before the exam. We also control for several individual characteristics (socio-economic background, age, gender, secondary school fixed effect, etc.) in order to compare students with similar abilities. Preliminary analysis shows that students who have chosen Economics elective course in the last year of secondary school do not perform better, or worse, at their University Economics exam, when controlling for the number of hours of mathematics they had in secondary school, as well as other individual characteristics. However, they are less likely to report their bachelor Economics course as being “difficult”. Overconfidence of students with higher previous economic knowledge may explain why they do not perform better than their peers. [less ▲]

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See detailDoes Human Capital Impact Differently the Opportunity Perception and the Business Creation? The Case of Spain
Aliaga Isla, Rocio ULg

in Baptista, Rui; Leitao, Joao (Eds.) Entrepreneurship, Human Capital, and Regional Development (2015)

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See detailDoes Imidacloprid Seed-Treated Maize Have an Impact on Honey Bee Mortality?
Nguyen, Bach Kim ULg; Saegerman, Claude ULg; PIRARD, Catherine ULg et al

in Journal of Economic Entomology (2009), 102(2), 616-623

Beekeepers suspected maize. Zea mays L., treated with imidacloprid to result in substantial loss of honey bee (Hymenoptera: Apidae) colonies in Belgium. The objective of this study was to investigate the ... [more ▼]

Beekeepers suspected maize. Zea mays L., treated with imidacloprid to result in substantial loss of honey bee (Hymenoptera: Apidae) colonies in Belgium. The objective of this study was to investigate the potential impact of maize grown from imidacloprid-treated seeds on honey bee mortality. A survey of 16 apiaries was carried out, and all maize fields treated or not with imidacloprid were located within a radius of 3,000 m around the observed apiaries. Samples of honey, beeswax, and bees were collected in three colonies per apiary and analyzed for pesticide contain by liquid chromatography-tandem mass spectrometry and gas chromatography-tandem mass spectrometry. We first found significant correlation between the number of colonies per apiary and the mortality rates in an apiary. In addition, this mortality rate was inversely correlated with the surface of maize fields treated and not with imidacloprid, suggesting that this pesticide do not interact with bees fitness. Moreover, a very large number of our samples contained acarcides either prohibited or ineffective against varroa destructor (Anderson & Trueman) (Acari: Varroidae), suggesting that the treatment method used by the beekeepers to be inadequate for mite control. Our results support the hypothesis that imidacloprid seed-treated maize has no negative impact on honey bees. [less ▲]

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See detailDoes implicit memory during anaesthesia persist in children?
Lopez, Ursula; Habre, w; Laurencon, M. et al

in British Journal of Anaesthesia (2009), 102(3), 37984

Background. Recent studies suggest that implicit memory (especially perceptual implicit memory) persists during adequate general anaesthesia in adults. Studies in children, however, have failed to ... [more ▼]

Background. Recent studies suggest that implicit memory (especially perceptual implicit memory) persists during adequate general anaesthesia in adults. Studies in children, however, have failed to demonstrate implicit memory during general anaesthesia, possibly because of differences in methodological design. We therefore designed a prospective study with the aim of evaluating implicit memory in children undergoing general anaesthesia, using a perceptual memory test based on the mere exposure effect, previously tested in a control group. Methods. Twelve infrequent neutral words were played 12 times in a random sequence via headphones to 36 children aged 8–12 yr during elective or emergency surgery. The children were not premedicated, and general anaesthesia was maintained with isoflurane. The word presentation started immediately after the surgical incision. Within 36 h after the stimulus presentation, the memory was assessed by using a forced-choice preference judgement task. Time constraint and word deterioration with a low-pass filter were used to prevent the subjects from utilizing intentional retrieval. The implicit memory score was obtained by calculating the proportion of target words preferred, which was compared with the chance level (0.5). Results. The percentage of correct responses given by the children was comparable with the chance level. The memory score was mean (SD) 0.48 (0.16) (95% CI 0.43–0.53). Conclusions. The use of a perceptual implicit memory test based on the mere exposure procedure in children failed to reveal any evidence of implicit memory under general anaesthesia. [less ▲]

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See detailDOES INCREASING LEVEL OF CONDENSED DISTILLERS SOLUBLES (PROTIWANZE®) SUPPLEMENTATION AFFECT MILK PRODUCTION IN DAIRY CATTLE ?
Lessire, Françoise ULg

Poster (2011, September 08)

INTRODUCTION The objective of this study was to evaluate whether introducing the condensed distillers solubles Protiwanze® (PW) at different concentrations in dairy cows diet induces changes in milk ... [more ▼]

INTRODUCTION The objective of this study was to evaluate whether introducing the condensed distillers solubles Protiwanze® (PW) at different concentrations in dairy cows diet induces changes in milk production. MATERIAL AND METHODS Three herds (72 Holstein and 25 Brown Swiss, DIM = 101 ± 57; daily milk production = 34.90 ± 8.40 L) received successively two RTM differing in PW content for 4 weeks, including a 7-day transition: 0% and 10% on a dry matter basis for Herd 1 and 10% and 15% for Herd 2 and 3. Both concentrations were distributed alternatively and repeated twice, each cow being its own control. Rations were formulated to meet energy and nitrogen requirements. During each testing period, animals were scored (Body Condition, Rumen Fill, Fecal Consistency, Undigested Fraction according to Zaaier (2001)) and their milk production and composition were measured by the Dairy Herd Improvement. RESULTS AND CONCLUSION Increasing the level of PW did not significantly change milk production in any Herd: Values were for Herd 1 at PW0%: 33.08 ± 0.76 L, at 10%: 31.66 ± 0.68 L, for Herd 2 at PW10%: 32.85 ± 0.93 L and at 15%: 32.37 ± 0.89, for Herd 3 at PW10%: 28.71 ± 1.21 L and at 15%: 31.80 ± 1.16. In Herd 1, milk urea decreased from 243.80 ± 4.55 mg/L for PW0% to 218.05 ± 4.03 mg/L for PW10%, (p<0.01), while fat percentage increased from 3.38% ± 0.09 (PW0%) to 3.77% ± 0.08 (PW10%) (p<0.01). Concerning scores, unconclusive changes were observed. Although increasing level of PW in dairy cows diet did not change milk production or composition, it is profitable since PW is 30-40% cheaper than other protein supplements like soya and canola meals. Moreover, it allowed to lower milk cost price by 1,5 eurocent per liter, when used at higher concentration. [less ▲]

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See detailDoes insulin release kinins in rats?
Damas, Jacques ULg; Garbacki, Nancy ULg; Lefebvre, P. J.

in European Journal of Pharmacology (2005), 525(1-3), 154-160

Rat uterus maintained in situ was used as a bioassay of kinins possibly released in vivo by hyperglycaemia or insulin. Intravenous injections of bradykinin induced contractions of rat uterus which were ... [more ▼]

Rat uterus maintained in situ was used as a bioassay of kinins possibly released in vivo by hyperglycaemia or insulin. Intravenous injections of bradykinin induced contractions of rat uterus which were suppressed by HOE 140, a bradykinin B-2 receptor antagonist. Des-Arg(9)-bradykinin, a kinin B-1 receptor agonist, did not elicit any response. After propranolol, the effects of bradykinin were enhanced and dose-dependent. This potentiation did not appear in adrenalectomized rats. Captopril, an angiotensin-converting enzyme (ACE) inhibitor, largely increased the effects of bradykinin. In animals pretreated with propranolol, captopril and atosiban, an oxytocin antagonist, intravenous infusion of glucose induced hyperglycaemia and after a delay increased the uterine contractile activity. This contractile effect of glucose was abolished by HOE 140. Infusion of insulin with glucose induced contractions of the uterus. These responses did not appear or were suppressed by HOE 140 or by soya bean trypsin inhibitor (SBTI), a plasma kallikrein inhibitor. These results are direct evidence that insulin induces a release of kinins. (c) 2005 Elsevier B.V. All rights reserved. [less ▲]

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See detailDoes Insulin resistance in acromegaly differ from that in diabetes?
Beckers, Albert ULg

Scientific conference (2004, May)

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See detailDoes insuline resistance in acromegaly differ from that in diabetes ?
Beckers, Albert ULg

in Growth and Beyond Workshop Summary : 16-17 May 2004 (2004, May)

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See detailDoes intergroup deliberation foster intergroup appreciation? Evidence from two deliberative experiments in deeply divided Belgium
Caluwaerts, Didier; Reuchamps, Min ULg

Conference (2012, July)

In this paper, we set out to determine whether the link between deliberation and transformation (or between process and outcome) is as straightforward as deliberative democracy assumes. More specifically ... [more ▼]

In this paper, we set out to determine whether the link between deliberation and transformation (or between process and outcome) is as straightforward as deliberative democracy assumes. More specifically, our research question is threefold: (1) whether a high quality of deliberation does indeed lead to changes in attitudes, (2) whether a high quality of deliberation can lead to a higher appreciation of the members of the outgroup, and above all (3) whether group composition matters. We thus want to push the research on the transformative effects a little further, into political psychology grounds, and see whether these effects can also take place in deliberation between diametrically opposed groups. Our aim is thus not only to test the link between deliberation and transformation, but also to see whether deliberation can have its transformative effects in high conflict settings, i.e. in more real-life settings. Based on findings from two deliberative experiments organized in deeply divided Belgium, we argue that the quality of deliberation (and the perceived quality of deliberation) are only weakly linked to changes in outgroup attitudes, and that the main variable explaining shifts towards more positive outgroup feelings is actually the group composition. Participants who are confronted with the other side are less likely to hold more negative views of the outgroup after the deliberation. [less ▲]

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See detailDoes isolated systolic or diastolic nocturnal fall of blood pressure have a signification?
Saint-Remy, Annie ULg; Moonen, Martial; Rorive, Georges ULg

in Journal of Hypertension (Supplement) (1997), 15(suppl 4), 190

Detailed reference viewed: 19 (4 ULg)