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See detailRossiter-McLaughlin effect measurements for WASP-16, WASP-25 and WASP-31★
Brown, D J A; Cameron, A Collier; Anderson, D R et al

in Monthly Notices of the Royal Astronomical Society (2012)

We present new measurements of the Rossiter-McLaughlin (RM) effect for three Wide Angle Search for transiting Planets (WASP) planetary systems, WASP-16, WASP-25 and WASP-31, from a combined analysis of ... [more ▼]

We present new measurements of the Rossiter-McLaughlin (RM) effect for three Wide Angle Search for transiting Planets (WASP) planetary systems, WASP-16, WASP-25 and WASP-31, from a combined analysis of their complete sets of photometric and spectroscopic data. We find a low-amplitude RM effect for WASP-16 (T[SUB]eff[/SUB]= 5700 ± 150 K), suggesting that the star is a slow rotator and thus of an advanced age, and obtain a projected alignment angle of ?. For WASP-25 (T[SUB]eff[/SUB]= 5750 ± 100 K), we detect a projected spin-orbit angle of λ= 14°.6 ± 6°.7. WASP-31 (T[SUB]eff[/SUB]= 6300 ± 100 K) is found to be well aligned, with a projected spin-orbit angle of λ= 2°.8 ± 3°.1. A circular orbit is consistent with the data for all three systems, in agreement with their respective discovery papers. We consider the results for these systems in the context of the ensemble of RM measurements made to date. We find that whilst WASP-16 fits the hypothesis of Winn et al. that 'cool' stars (T[SUB]eff[/SUB] < 6250 K) are preferentially aligned, WASP-31 has little impact on the proposed trend. We bring the total distribution of the true spin-orbit alignment angle, ψ, up to date, noting that recent results have improved the agreement with the theory of Fabrycky & Tremaine at mid-range angles. We also suggest a new test for judging misalignment using the Bayesian information criterion, according to which WASP-25 b's orbit should be considered to be aligned. [less ▲]

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See detailEarly Jezirah 3b Pottery from Tell Beydar. Selected Inventories from latest excavation campaigns
Mas, Juliette ULg; Gavagnin, Katia

Conference (2012, April)

Since 1992, excavations at Tell Beydar have offered the opportunity to explore an urban centre of the Upper Khabur region. The extensive exploration of the EJZ 3b levels gave us access to the urbanism and ... [more ▼]

Since 1992, excavations at Tell Beydar have offered the opportunity to explore an urban centre of the Upper Khabur region. The extensive exploration of the EJZ 3b levels gave us access to the urbanism and the architecture of the city as well as its material culture, especially the pottery. The assemblages presented in this paper were exclusively found directly on the floors of various buildings (of a public, domestic, religious, offi- cial nature) and inside a grave. Most of these inventories consist of complete vessels discovered either intact or smashed but restorable. The aim of this paper is to investigate if, or to what extent, the intra-site distribution of the morphological repertoire of Beydar IIIb ceramic is related to its context of use. [less ▲]

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See detailEthique et renseignement
Cools, marc; Debruyne, Emmanuel; Franceus, Frank et al

in Cahiers d'études du Renseignement (2012), 1

Périodique réalisé par le Belgian Intelligence studies center sur base du colloque intitulé: Ethique et renseignement

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See detailInfluence of drying and hydrothermal treatment of corn on the denaturation of salt-soluble proteins and color parameters
Odjo, Sylvanus; Malumba Kamba, Paul ULg; Dossou, Joseph et al

in Journal of Food Engineering (2012), 109(3), 561-570

The effect of heat treatments (drying and hydrothermal treatment) on the extractability of salt-soluble protein (SSP) was assessed using Promatest methodology for corn kernels heated between 60 C and 120 ... [more ▼]

The effect of heat treatments (drying and hydrothermal treatment) on the extractability of salt-soluble protein (SSP) was assessed using Promatest methodology for corn kernels heated between 60 C and 120 C. During drying, the evolution of the grain moisture content is fitted using the analytical solution of Fick equation developed by Crank (1979) for spherical material. The decrease of extractible salt-soluble protein during heating is forecasted using a first and a second order ordinary differential equation. It was found that temperature; moisture content and time of processing greatly influence the kinetic denaturation of SSP of corn kernels. The evolution of extractible SSP content of corn kernels during drying at high temperature is more correctly described with second order kinetic than with the first order kinetic reaction. The Hunterlab color parameters of corn also vary during drying. Lightness and color intensity decrease while yellowness, redness, chroma and hue angle increase through drying time. Most of these Hunterlab color parameters are highly correlated with the salt-soluble proteins content and therefore could be used as indicators of excessive heat treatment and denaturation of salt-soluble proteins in corn kernels [less ▲]

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See detailUse of ionic liquids for biocatalytic synthesis of sugar derivatives
Galonde, Nadine ULg; Nott, Katherine ULg; Debuigne, Antoine ULg et al

in Journal of Chemical Technology & Biotechnology (2012), 87(4), 451-471

Sugar-based compounds are widely used in pharmaceuticals, cosmetics, detergents and food. They are mainly produced by chemical methods, but the use of enzymes as ‘a greener alternative’ to organic ... [more ▼]

Sugar-based compounds are widely used in pharmaceuticals, cosmetics, detergents and food. They are mainly produced by chemical methods, but the use of enzymes as ‘a greener alternative’ to organic synthesis has been investigated for more than 20 years. Due to the low polar substrate solubility in organic solvents compatible with enzymes, research has focused on the application of substitutes for biocatalysis, especially ionic liquids (ILs). After introducing the main properties of ILs and especially their ability to solubilize sugars, this review focuses on one of their applications, the biocatalytic synthesis of carbohydrate derivatives. In this context, they can be used in pure IL systems, in IL/IL systems or in IL/organic solvent systems. Finally, this review provides an update on the environmental fate of ILs. Their exploitation in ‘green’ processes is still limited due to their low degradability but research is currently under way to design new more ‘eco-friendly’ ILs. [less ▲]

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See detailNatural Killer cells - role in local tumor growth and metastasis
Langers, Inge ULg; Renoux, Virginie ULg; Thiry, Marc ULg et al

in Biologics: Targets and Therapy (2012)

Historically, the name of Natural Killer (NK) cells came from their natural ability to kill tumor cells in vitro. From the seventies to date, accumulating data highlighted the importance of NK cells in ... [more ▼]

Historically, the name of Natural Killer (NK) cells came from their natural ability to kill tumor cells in vitro. From the seventies to date, accumulating data highlighted the importance of NK cells in host immune response against cancer and in therapy-induced anti-tumor response. The recognition and the lysis of tumor cells by NK cells are regulated by a complex balance of inhibitory and activating signals. This review summarizes NK cell mechanisms to kill cancer cells, their role in host immune responses against tumor growth or metastasis and their implications in anti-tumor immunotherapies via cytokines, antibodies or in combination with other therapies. The regulatory role of NK cells in autoimmunity is also discussed. [less ▲]

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See detailDynamique forestière et enrichissements forestiers. Site de Mbang. Rapport n° 8.
Doucet, Jean-Louis ULg; Amandé, Jean; Bracke, Charles et al

Report (2012)

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See detailMapping error due to image geometric correction.
Hallot, Eric ULg; Cornet, Yves ULg; Hallot, Pierre ULg

Poster (2012, April)

Nowadays, image processing and GIS tools are more accessible and available to all. Most of diachronical or historical studies use the image geometric correction with several documents like old maps, plans ... [more ▼]

Nowadays, image processing and GIS tools are more accessible and available to all. Most of diachronical or historical studies use the image geometric correction with several documents like old maps, plans or aerial photographs. They are usually based on low-order polynomial equation to perfom these kinds of simplistic uses. Most of commercial softwares provide us a total or by ground control points RMSE but they don’t offer a overview of the spatial error distribution. More this does not guarantee that its significance for the other points of the image. Do not consider these errors can lead to erroneous observations and misinterpretations like historical moving streams or bank erosion rate. Using a least square adjustment (LSA), allow to recalculate the transformation equation from the pairs of control points coordinates. Assuming that residuals are spatially auto-correlated, we can build error vectors whose direction and magnitude symbolize the error at each point of the image. By another way, LSA manage the precision during transformation process by using a stochastic model in addition of the mathematical model during the transformation. This gives us variance on parameters of the transformation. Knowing the precision of all elements and variance/covariance matrix on transformation parameters, we apply variance propagation on the model. As an output, we obtain confidence ellipses on each transformed points, thus a spatial distribution of error for the entire image. Moreover, this leads us to determine statistically if observed movement are significant or not. The represent error is a complex problem that cannot be solved with a quick fix. In this work, we present an interesting example of using well-known topographic methods to solve image processing problems. [less ▲]

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See detailGender and leadership
Cornet, Annie ULg

Speech/Talk (2012)

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See detailInorganic carbon dynamics in coastal arctic sea ice and related air-ice CO2 exchanges
Geilfus, Nicolas-Xavier ULg; Tison, J.-L.; Carnat, G. et al

Poster (2012, April)

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See detailBase de données sols de REQUASUD - 3ème synthèse
Genot, Valérie ULg; Renneson, Malorie ULg; Colinet, Gilles ULg et al

Book published by ASBL REQUASUD - D/2012/8689/1 (2012)

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See detailAnticipatory Modeling and Simulation for Inter Regional Security
Dubois, Daniel ULg; Asproth, Viveca; Stig C, Holmberg et al

Conference (2012, April)

Detailed reference viewed: 48 (4 ULg)
See detailIntroduction générale
Bouhon, Frédéric ULg; Reuchamps, Min ULg

in Bouhon, Frédéric; Reuchamps, Min (Eds.) Les systèmes électoraux de la Belgique (2012)

Cette introduction ouvre un ouvrage collectif consacré aux systèmes électoraux de la Belgique. Elle insiste sur le caractère multidisciplinaire de l'étude des questions électorales qui est proposée dans ... [more ▼]

Cette introduction ouvre un ouvrage collectif consacré aux systèmes électoraux de la Belgique. Elle insiste sur le caractère multidisciplinaire de l'étude des questions électorales qui est proposée dans le livre et en présente le plan. [less ▲]

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See detailUne cellule d'encadrement pour les producteurs transformateurs
Helleputte, Murielle ULg; De Laubier, Juliette ULg; Di Tanna, Sybille ULg et al

in Wallonie Elevages (2012), 4

La Cellule Qualité Produits Fermiers possède un guichet unique auquel le producteur-transformateur peut s'adresser pour toute question relative à son projet de diversification. En fonction de la demande ... [more ▼]

La Cellule Qualité Produits Fermiers possède un guichet unique auquel le producteur-transformateur peut s'adresser pour toute question relative à son projet de diversification. En fonction de la demande, il est dirigé vers le ou les pôles compétents. [less ▲]

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See detailMotor fatigue measurement by distance-induced slow down of walking speed in multiple sclerosis
PHAN BA, Remy ULg; CALAY, Philippe ULg; GRODENT, Patrick ULg et al

in PLoS ONE (2012), 7(4), 34744

Background: Motor fatigue and ambulation impairment are prominent clinical features of people with multiple sclerosis (pMS). We hypothesized that a multimodal and comparative assessment of walking speed ... [more ▼]

Background: Motor fatigue and ambulation impairment are prominent clinical features of people with multiple sclerosis (pMS). We hypothesized that a multimodal and comparative assessment of walking speed on short and long distance would allow a better delineation and quantification of gait fatigability in pMS. Objectives: To compare 4 walking paradigms: the timed 25-foot walk (T25FW), a corrected version of the T25FW with dynamic start (T25FW+), the timed 100-meter walk (T100MW) and the timed 500-meter walk (T500MW). Methods: Thirty controls and 81 pMS performed the 4 walking tests in a single study visit. Results: The 4 walking tests were performed with a slower WS in pMS compared to controls even in subgroups with minimal disability. The finishing speed of the last 100-meter of the T500MW was the slowest measurable WS whereas the T25FW+ provided the fastest measurable WS. The ratio between such slowest and fastest WS (Deceleration Index, DI) was significantly lower only in pMS with EDSS 4.0-6.0, a pyramidal or cerebellar functional system score reaching 3 or a maximum reported walking distance !4000m. Conclusion: The motor fatigue which triggers gait deceleration over a sustained effort in pMS can be measured by the WS ratio between performances on a very short distance and the finishing pace on a longer more demanding task. The absolute walking speed is abnormal early in MS whatever the distance of effort when patients are unaware of ambulation impairment. In contrast, the DI-measured ambulation fatigability appears to take place later in the disease course. [less ▲]

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See detail"Les testaments"
Moreau, Pierre ULg

in Chroniques notariales, vol. 55 (2012)

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See detailDynamic interaction between lymphoid tyrosine phosphatase and C-terminal Src kinase controls T cell activation
Tautz, Lutz; Vang, Torkel; Liu, Wallace et al

in FASEB Journal (2012, April), 26

Lymphoid tyrosine phosphatase (LYP) and C-terminal Src kinase (CSK) are negative regulators of signaling mediated through the T cell antigen receptor (TCR) and are thought to act in a cooperative manner ... [more ▼]

Lymphoid tyrosine phosphatase (LYP) and C-terminal Src kinase (CSK) are negative regulators of signaling mediated through the T cell antigen receptor (TCR) and are thought to act in a cooperative manner when forming a complex. Here, we show that dissociation of the LYP/CSK complex is necessary for recruitment of LYP to lipid rafts, where it down-modulates TCR-mediated signaling. Our findings may also explain the reduced TCR signaling associated with a single nucleotide polymorphism, which confers increased risk for autoimmunity and results in the expression of a LYP allele that can no longer bind CSK. Development of a potent and selective chemical probe of LYP allowed us to confirm that the observed down-modulation of TCR-induced signaling was due to the LYP catalytic activity. Our compound also represents a starting point for the development of a LYP-based treatment of autoimmunity. [less ▲]

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