References of "2011"
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See detail2009-2010 Russo-franco-latvian expeditions in the Main Devonian Field (North-western Russia)
Olive, Sébastien ULg; Lebedev, Oleg; Ivanov, Alexander et al

in Lebedev, Oleg; Ivanov, Alexander (Eds.) Palaeozoic Early Vertebrates II - Obruchev Symposium - Abstracts (2011)

In the frame of an international project between the Paleontological Institute of Moscow and the Museum of Paris, a Russo-Franco-Latvian team has been set up to prospect the Main Devonian Field in North ... [more ▼]

In the frame of an international project between the Paleontological Institute of Moscow and the Museum of Paris, a Russo-Franco-Latvian team has been set up to prospect the Main Devonian Field in North-Western Russia (Novgorod and Leningrad Regions). This joined project started in 2009 (one month of field trip), continued in 2010 (one month also) and will end in 2011. The two first years were mainly devoted to the prospecting of historical localities, some discovered and/or exploited by Dmitry Obruchev himself. Such a method is effective but quite time-consuming; i.e. to rediscover the accurate location of the localities by discussing with denizens, to fathom the archives out and to access to non-weathered layers by removing the altered surface. Novgorod and Leningrad Regions are topographically excessively flat. Devonian fields have not been disrupted by tectonic movements and the layers are thus horizontal. Rocks are most often quite unconsolidated (consisting of loose sands or clays) and excavations are thus relatively easy. The lack of relief and the vegetal cover unfortunately lead to few outcrops in the landscape. They are all located along rivers (Lovat’, Syas' and Oredesh rivers for instance) or are represented by outliers. Although most of the localities were easily accessible by cars, others required several kilometers by feet and/or by boat. Roughly 30 localities have been prospected. About one third of them are very interesting such as Borshovo and Goryn' (Luga District) which provided numerous and exquisite fossils of placoderms, agnathans and sarcopterygians. The original locality of the Frasnian tetrapod Obruchevichthys in Russia, Sondala (Leningrad Region), has been rediscovered with near certainty. [less ▲]

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See detailcapitulo 10 : Fundamentos de Física en la Ingeniería Civil: Aprendizaje Basado en Problemas (PBL)
Bueno, M.; Paje, S.E.; Luong, Jeanne ULg

in Najera, A.; Arribas, E. (Eds.) mas experiencias de innovación docente en la enseñanza de la física universitaria (2011)

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See detailQuelques adverbes négatifs en grec ancien sous l'angle du cycle de Jespersen
Denizot, Camille ULg

in Lalies (2011), 31

This article deals with the negative adverbs in Ancient Greek which can take two forms (οὔποτε / οὐδέποτε, οὔπω / οὐδέπω, οὐπώποτε / οὐδεπώποτε). For this purpose, it adopts a diachronic point of view ... [more ▼]

This article deals with the negative adverbs in Ancient Greek which can take two forms (οὔποτε / οὐδέποτε, οὔπω / οὐδέπω, οὐπώποτε / οὐδεπώποτε). For this purpose, it adopts a diachronic point of view (from Homeric poems to IInd A.D.). The adverbs with –δε‐ first appeared as coordinators, and were then employed as reinforced and emphatic forms, and hardly ever as focal forms. These emphatic adverbs finally overtook the corresponding forms without –δε‐, and lost their emphatic characteristics, according to the evolution put forward by Jespersen. When authors from the IInd century A.D. follow the classical pattern, their imitation is shaped by this evolution. [less ▲]

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See detailSynthesis and organocatalytic applications of imidazol(in)ium-2- thiocarboxylates
Hans, Morgan ULg; Wouters, Johan; Demonceau, Albert ULg et al

in European Journal of Organic Chemistry (2011), (35), 7083-7091

Five imidazol(in)ium-2-thiocarboxylates bearing cyclohexyl, mesityl, or 2,6-diisopropylphenyl substituents on their nitrogen atoms were prepared from the corresponding imidazol(in)ium chlorides or ... [more ▼]

Five imidazol(in)ium-2-thiocarboxylates bearing cyclohexyl, mesityl, or 2,6-diisopropylphenyl substituents on their nitrogen atoms were prepared from the corresponding imidazol(in)ium chlorides or tetrafluoroborates in a one-pot, two-step procedure involving the in situ generation of free N-heterocyclic carbenes (NHCs) with a strong base followed by trapping with carbonyl sulfide. The resulting NHC•COS zwitterions were isolated in high yields and characterized by IR and NMR spectroscopy. The molecular structure of SIMes•COS was determined by X-ray diffraction analysis. Experimental data and DFT calculations indicated that the negative charge on the thiocarboxylate anion is preferentially delocalized on the sulfur atom. Thermogravimetric analysis showed that the NHC•COS zwitterions undergo thermolysis at temperatures ranging between 110 and 180 °C in the solid state. They are also rather labile in solution. Unlike the related NHC•CS2 betaines, which are highly stable, crystalline materials, they displayed the same type of behavior as the analogous carboxylate adducts, which readily lose their CO2 moiety upon heating or dissolution. Thus, imidazol(in)ium-2-thiocarboxylates acted as convenient NHC precursors in two model organocatalytic transformations. Of the five thiocarboxylates examined, ICy•COS was the most efficient at promoting the acylation of benzyl alcohol with vinyl acetate, whereas SIMes•COS afforded the highest activity in benzoin condensation. [less ▲]

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See detailInfluence of response prepotency strength, general working memory resources, and specific working memory load on the ability to inhibit predominant responses: A comparison of young and elderly participants
Grandjean, Julien ULg; Collette, Fabienne ULg

in Brain & Cognition (2011), 77

One conception of inhibitory functioning suggests that the ability to successfully inhibit a predominant response depends mainly on the strength of that response, the general functioning of working memory ... [more ▼]

One conception of inhibitory functioning suggests that the ability to successfully inhibit a predominant response depends mainly on the strength of that response, the general functioning of working memory processes, and the working memory demand of the task (Roberts, Hager, and Heron, 1994). The proposal that inhibition and functional working memory capacity interact was assessed in the present study using two motor inhibition tasks (Go/No-Go and response incompatibility) in young and older participants. The strength of prepotency was assessed with a short or long training phase for the response to be inhibited. The influence of working memory resources was evaluated by administering the tasks in full versus divided attention conditions. The effect of working memory load was manipulated by increasing the number of target and distracter items in each task. Results showed no effect of prepotency strength, whereas dividing attentional resources and increasing working memory load were associated with greater inhibitory effects in both groups and for both tasks. This deleterious effect was higher for older participants, except in the working memory load condition of the Go/No-Go task. These results suggest an interactive link between working memory and response inhibition by showing that taxing working memory resources increases the difficulty of inhibiting prepotent responses in younger and older subjects. The additional detrimental effect of these factors on healthy elderly subjects was related to their decreased cognitive resources and to their shorter span size. [less ▲]

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See detailThe Mons campaign on OB stars
Morel, Thierry ULg; Rauw, Grégor ULg; Eversberg, T. et al

in Bulletin de la Société Royale des Sciences de Liège (2011), 80

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See detailorigines de la vie: où, quand, comment?
Javaux, Emmanuelle ULg

Speech (2011)

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See detailLUPA: a European initiative taking advantage of the canine genome architecture for unravelling complex disorders in both human and dogs.
Lequarré, Anne-Sophie ULg; Andersson, Leif; Andre, Catherine et al

in Veterinary Journal (2011), 189(2), 155-9

The domestic dog offers a unique opportunity to explore the genetic basis of disease, morphology and behaviour. Humans share many diseases with our canine companions, making dogs an ideal model organism ... [more ▼]

The domestic dog offers a unique opportunity to explore the genetic basis of disease, morphology and behaviour. Humans share many diseases with our canine companions, making dogs an ideal model organism for comparative disease genetics. Using newly developed resources, genome-wide association studies in dog breeds are proving to be exceptionally powerful. Towards this aim, veterinarians and geneticists from 12 European countries are collaborating to collect and analyse the DNA from large cohorts of dogs suffering from a range of carefully defined diseases of relevance to human health. This project, named LUPA, has already delivered considerable results. The consortium has collaborated to develop a new high density single nucleotide polymorphism (SNP) array. Mutations for four monogenic diseases have been identified and the information has been utilised to find mutations in human patients. Several complex diseases have been mapped and fine mapping is underway. These findings should ultimately lead to a better understanding of the molecular mechanisms underlying complex diseases in both humans and their best friend. [less ▲]

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See detailExperience-dependent induction of hypnagogic images during daytime naps: a combined behavioural and EEG study.
Kussé, Caroline ULg; Shaffii, Anahita ULg; Schrouff, Jessica ULg et al

in Journal of Sleep Research (2011)

This study characterizes hypnagogic hallucinations reported during a polygraphically recorded 90-min daytime nap following or preceding practice of the computer game Tetris. In the experimental group (N ... [more ▼]

This study characterizes hypnagogic hallucinations reported during a polygraphically recorded 90-min daytime nap following or preceding practice of the computer game Tetris. In the experimental group (N = 16), participants played Tetris in the morning for 2 h during three consecutive days, while in a first control group (N = 13, controlling the effect of experience) participants did not play any game, and in a second control group (N = 14, controlling the effect of anticipation) participants played Tetris after the nap. During afternoon naps, participants were repetitively awakened 15, 45, 75, 120 or 180 s after the onset of S1, and were asked to report their mental content. Reports content was scored by three judges (inter-rater reliability 85%). In the experimental group, 48 out of 485 (10%) sleep-onset reports were Tetris-related. They mostly consisted of images and sounds with very little emotional content. They exactly reproduced Tetris elements or mixed them with other mnemonic components. By contrast, in the first control group, only one report out of 107 was scored as Tetris-related (1%), and in the second control group only three reports out of 112 were scored as Tetris-related (3%; between-groups comparison; P = 0.006). Hypnagogic hallucinations were more consistently induced by experience than by anticipation (P = 0.039), and they were predominantly observed during the transition of wakefulness to sleep. The observed attributes of experience-related hypnagogic hallucinations are consistent with the particular organization of regional brain activity at sleep onset, characterized by high activity in sensory cortices and in the default-mode network. [less ▲]

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See detailEffective spin model for interband transport in a Wannier-Stark lattice system
Plötz, Patrick; Schlagheck, Peter ULg; Wimberger, Sandro

in European Physical Journal D -- Atoms, Molecules, Clusters & Optical Physics (2011), 63

We show that the interband dynamics in a tilted two-band Bose-Hubbard model can be reduced to an analytically accessible spin model in the case of resonant interband oscillations. This allows us to ... [more ▼]

We show that the interband dynamics in a tilted two-band Bose-Hubbard model can be reduced to an analytically accessible spin model in the case of resonant interband oscillations. This allows us to predict the revival time of these oscillations which decay and revive due to inter-particle interactions. The presented mapping onto the spin model and the so achieved reduction of complexity has interesting perspectives for future studies of many-body systems. [less ▲]

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See detailLa contradiction des motifs : réflexions à partir du droit belge
Henry, Frédéric ULg; Caprasse, Olivier ULg

in Revue de l'Arbitrage (2011)

La contradiction des motifs d'une sentence arbitrale ne devrait pas être assimilée à l'absence de ses motifs et ne pas conduire à l'annulation de la sentence

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See detailLe compromis en politique
Nachi, Mohamed ULg

in Nachi, Mohamed (Ed.) Actualité du compromis: La construction politique de la différence (2011)

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See detailEffects of light on cognitive brain responses depend on circadian phase and sleep homeostasis.
Vandewalle, Gilles ULg; Archer, Simon N; Wuillaume, Catherine et al

in Journal of biological rhythms (2011), 26(3), 249-59

Light is a powerful modulator of cognition through its long-term effects on circadian rhythmicity and direct effects on brain function as identified by neuroimaging. How the direct impact of light on ... [more ▼]

Light is a powerful modulator of cognition through its long-term effects on circadian rhythmicity and direct effects on brain function as identified by neuroimaging. How the direct impact of light on brain function varies with wavelength of light, circadian phase, and sleep homeostasis, and how this differs between individuals, is a largely unexplored area. Using functional MRI, we compared the effects of 1 minute of low-intensity blue (473 nm) and green light (527 nm) exposures on brain responses to an auditory working memory task while varying circadian phase and status of the sleep homeostat. Data were collected in 27 subjects genotyped for the PER3 VNTR (12 PER3(5/5) and 15 PER3(4/4) ) in whom it was previously shown that the brain responses to this task, when conducted in darkness, depend on circadian phase, sleep homeostasis, and genotype. In the morning after sleep, blue light, relative to green light, increased brain responses primarily in the ventrolateral and dorsolateral prefrontal cortex and in the intraparietal sulcus, but only in PER3(4/4) individuals. By contrast, in the morning after sleep loss, blue light increased brain responses in a left thalamofrontoparietal circuit to a larger extent than green light, and only so in PER3(5/5) individuals. In the evening wake maintenance zone following a normal waking day, no differential effect of 1 minute of blue versus green light was observed in either genotype. Comparison of the current results with the findings observed in darkness indicates that light acts as an activating agent particularly under those circumstances in which and in those individuals in whom brain function is jeopardized by an adverse circadian phase and high homeostatic sleep pressure. [less ▲]

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See detailStudy of the information delivery by general practitioners and rheumatologists to patients with acute low back pain.
Henrotin, Yves ULg; Moyse, Dominique; Bazin, Thierry et al

in European Spine Journal (2011), 20(5), 720-30

Providing information to patients regarding appropriate management of LBP is a crucial component of primary care and treatment of low back pain (LBP). Limited knowledge is available, however, about the ... [more ▼]

Providing information to patients regarding appropriate management of LBP is a crucial component of primary care and treatment of low back pain (LBP). Limited knowledge is available, however, about the information delivered by physicians to patients with low back pain. Hence, this study aimed at evaluating (1) the self-reported practices of French physicians concerning information about patients with acute LBP (2) the consistency of these practices with the COST B13 guidelines, and (3) the effects of the delivery of a leaflet summarizing the COST B13 recommendations on the management of patient information, using the following study design: 528 French physicians [319 general practitioners (GP) and 209 rheumatologists (RH)] were asked to provide demographic information, responses to a Fear Avoidance Beliefs questionnaire adapted for physicians and responses to a questionnaire investigating the consistency of their practice with the COST B13 guidelines. Half of the participants (163 GP and 105 RH) were randomized to receive a summary of the COST B13 guidelines concerning information delivery to patient with low back pain and half (156 GP and 104 RH) were not given this information. The mean age of physicians was 52.1 +/- 7.6 years, 25.2% were females, 75% work in private practice, 63.1% reported to treat 10-50 patients with LBP per month and 18.2% <10 per month. The majority of the physicians (71.0%) reported personal LBP episode (7.1% with a duration superior to 3 months). Among the 18.4% (97) of the physicians that knew the COST B13 guidelines, 85.6% (83/97) reported that they totally or partially applied these recommendations in their practice. The average work (0-24) and physical activity (0-24) FABQ scores were 21.2 +/- 8.4 and 10.1 +/- 6.0, respectively. The consistency scores (11 questions scored 0 to 6, total score was standardized from 0 to 100) were significantly higher in the RH group (75.6 +/- 11.6) than in GP group (67.2 +/- 12.6; p < 0.001). The delivery of a summary of the COST B13 guidelines significantly improved the consistency score (p = 0.018). However, a multivariate analysis indicated that only GP consistency was improved by recommendations' delivery.The results indicated that GP were less consistent with the European COST B13 guidelines on the information of patients with acute LBP than RH. Interestingly, delivery of a summary of these guidelines to GP improved their consistency score, but not that of the RH. This suggests that GP information campaign can modify the message that they deliver to LBP, and subsequently could change patient's beliefs on LBP. [less ▲]

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See detailAnalysis of insurance claims after vascular surgery: a tool for quality improvement?
Kolh, Philippe ULg

in European Journal of Vascular and Endovascular Surgery (2011), 42(4), 506-7

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See detailIL28B polymorphism and the control of hepatitis C virus infection: ready for clinical use?
Orlent, Hans; Reynaert, Hendrik; Bourgeois, Stefan et al

in Acta Gastro-Enterologica Belgica (2011), 74(2), 317-322

Polymorphisms in the region of the interleukin-28B (IL28B) gene have recently been associated with spontaneous and treatment induced clearance of hepatitis C virus infection. The specific mechanisms of ... [more ▼]

Polymorphisms in the region of the interleukin-28B (IL28B) gene have recently been associated with spontaneous and treatment induced clearance of hepatitis C virus infection. The specific mechanisms of how IL28B polymorphisms affect HCV suppression remain unknown. It is a matter of ongoing debate how to incorporate the IL28B data into the current treatment algorithms with pegylated interferon-alpha and ribavirin. The eventual role of the IL28B genotype in new therapeutic regimes with direct antiviral agents needs to be explored in the ongoing and future clinical studies with these agents. [less ▲]

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See detailLa validité de la clause hybride en arbitrage
Henry, Frédéric ULg

in Journal des Tribunaux (2011)

cet article traite de la validité des clauses hybrides en droit belge

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