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See detailLes délocalisations industrielles. Pour une clarification d’un phénomène connu et controversé
Merenne-Schoumaker, Bernadette ULg

in Wackermann, Gabriel (Ed.) Nouveaux espaces et systèmes urbains, Livre jubilaire en hommage au Professeur Bernard Dézert (1998)

Quatre objectifs : proposer une définition du concept de délocalisation, tenter de mesurer l'importance des délocalisations industrielles, chercher à les expliquer et s'interroger sur leurs futurs ... [more ▼]

Quatre objectifs : proposer une définition du concept de délocalisation, tenter de mesurer l'importance des délocalisations industrielles, chercher à les expliquer et s'interroger sur leurs futurs possibles [less ▲]

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See detailDelocalization of ultracold atoms in a disordered potential due to light scattering
Nowak, Boris; Kinnunen, Jami J.; Holland, Murray J. et al

in Physical Review. A (2012), 86

We numerically study the expansion dynamics of ultracold atoms in a one-dimensional disordered potential in the presence of a weak position measurement of the atoms. We specifically consider this position ... [more ▼]

We numerically study the expansion dynamics of ultracold atoms in a one-dimensional disordered potential in the presence of a weak position measurement of the atoms. We specifically consider this position measurement to be realized by a combination of an external laser and a periodic array of optical microcavities along a waveguide. The position information is acquired through the scattering of a near-resonant laser photon into a specific eigenmode of one of the cavities. The time evolution of the atomic density in the presence of this light-scattering mechanism is described within a Lindblad master equation approach, which is numerically implemented using the Monte Carlo wave function technique. We find that an arbitrarily weak rate of photon emission leads to a breakdown of Anderson localization of the atoms. [less ▲]

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See detailDelphinidin-3-O-glucoside and delphinidin-3-O-rutinoside mediate the redoxsensitive caspase 3-related pro-apoptotic effect of blackcurrant juice on leukaemia Jurkat cells
Leon-gonzalez, Antonio; Sharif, Tanveer; Kayali, Asaad et al

in Journal of Functional Foods (2015), 17

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See detailDelta and deep basin Jurassic deposits from Iran: relationship between magnetic susceptibility and facies
Sardar Abadi, Mehrdad ULg; Da Silva, Anne-Christine ULg; Zamanzadeh

in Abstract 4eme Congrès Français de Stratigraphie, Strati2010, Paris, France, 30 Augustus – 2 September (2010)

This study concerns, the Kashafrud Formation from Kopet Dagh Basin in its type section, which corresponds to the first Jurassic sedimentary cycle in Iran,. Sedimentary studies were carried out to propose ... [more ▼]

This study concerns, the Kashafrud Formation from Kopet Dagh Basin in its type section, which corresponds to the first Jurassic sedimentary cycle in Iran,. Sedimentary studies were carried out to propose a paleoenvironmental model of the sedimentary succession. Furthermore, magnetic susceptibility (MS) measurements were performed and compared with sedimentological evolution. The MS curve evolution is related to the abundance of magnetic minerals, which itself is related to lithogenic supplies which could be related mostly to sea level and climatic changes. Theoretically, a regression will lead to a more important proportion of landmass exposed and so to an increase of detritic minerals in the sedimentary system and so to an increasing MS. A transgression will decrease MS (Ellwood et al., 2000). Palaeoenvironments of this Jurassic succession from base to top are: flood dominated delta, deep basin deposits, silisiclastic and mixed silisiclastic and carbonate shoreface deposits. Comparison between facies evolution and MS curve shows that the facies which are deposited in delta and shoreface zones have low MS values; on the contrary basinal deposits are presenting high MS values. The facies deposited in mixed silisiclastic and carbonate shoreface have lowest MS values. So it appears that the deeper basinal deposits have the highest MS values and the shallower deltaic and shorelines facies have the lowest MS values, in opposition with theoretical background. This could be related to water agitation and sedimentation rate during deposition. In the deltaic and shoreface environments, a high water agitation could prevent the detritic particles to settle and a high sedimentary rate could dilute the magnetic minerals (see Da Silva et al., 2009). It actually seams that the carbonate production in the upper parts of the studied interval has led to a dramatic decrease in MS values. This study clearly shows the significant role of MS in environmental analysis, and the importance of a strong sedimentological background. Ellwood, B.B., Crick, R.E., El Hassani, A., Benoist, S.L. & Young, R.H., 2000. Magnetosusceptibility event and cyclostratigraphy method applied to marine rocks: detrital input versus carbonate productivity. Geology, 28: 1135-1138. Da Silva, A.-C., Mabille, C. & Boulvain, F., 2009. Influence of sedimentary setting on the use of magnetic susceptibility: examples from the Devonian of Belgium. Sedimentology, 56: 1292-1306. [less ▲]

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See detailDelta down compared with delta pulse as an indicator of volaemia during intracranial surgery
Deflandre, Eric; Bonhomme, Vincent ULg; Hans, Pol ULg

in British Journal of Anaesthesia (2008), 100(2), 245-250

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See detailThe Delta Ori Very Large Project: X-ray Emission and Stellar Variability
Corcoran, Michael F.; Nichols, J. S.; Moffat, A. F. et al

in American Astronomical Society Meeting Abstracts (2014, January 01)

Delt Ori is the nearest massive, single-lined eclipsing binary (O9. II+OB, $P=5^{d}.7324$). High resolution X-ray spectrometry combined with high-precision photometry from space offers a unique ... [more ▼]

Delt Ori is the nearest massive, single-lined eclipsing binary (O9. II+OB, $P=5^{d}.7324$). High resolution X-ray spectrometry combined with high-precision photometry from space offers a unique opportunity to geometrically measure the dynamics of the shocked gas around the primary star. We summarize our recent campaign of phase-constrained high-resolution X-ray spectra obtained with the CHANDRA/HETGS plus high-precision optical photometry with MOST. These observations provide local measurement of the distribution of the embedded, X-ray emitting shocks in the wind of an O star via radial velocity variations and occultation effects, along with standard $f/i$ ratio diagnostics, and enable us to look for correlations with the broad-band photometric variability. We discuss how these observations can help determine the primary star's clumping-corrected mass loss rate, and resolve critical uncertainties in our understanding of the connection between stellar and mass loss parameters. [less ▲]

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See detailDelta-baryon electromagnetic form factors in lattice QCD
Alexandrou, C.; Korzec, T.; Koutsou, G. et al

in Physical Review. D, Particles, Fields, Gravitation, and Cosmology (2009), D79

We develop techniques to calculate the four $\Delta$ electromagnetic form factors using lattice QCD, with particular emphasis on the subdominant electric quadrupole form factor that probes deformation of ... [more ▼]

We develop techniques to calculate the four $\Delta$ electromagnetic form factors using lattice QCD, with particular emphasis on the subdominant electric quadrupole form factor that probes deformation of the $\Delta$ . Results are presented for pion masses down to approximately 350 MeV for three cases: quenched QCD, two flavors of dynamical Wilson quarks, and three flavors of quarks described by a mixed action combining domain-wall valence quarks and dynamical staggered sea quarks. The magnetic moment of the $\Delta$ is compared with chiral effective field theory calculations and the $\Delta$ charge density distributions are discussed. [less ▲]

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See detailDeltaNp63 isoform-mediated beta-defensin family up-regulation is associated with (lymph)angiogenesis and poor prognosis in patients with squamous cell carcinoma.
Suarez-Carmona, Meggy ULg; Hubert, Pascale ULg; Gonzalez, Arnaud ULg et al

in Oncotarget (2014), 5(7), 1856-1868

Beside a role in normal development/differentiation, high p63 immunoreactivity is also frequently observed in squamous cell carcinoma (SCC). Due to the complexity of the gene, the role of each p63 isotype ... [more ▼]

Beside a role in normal development/differentiation, high p63 immunoreactivity is also frequently observed in squamous cell carcinoma (SCC). Due to the complexity of the gene, the role of each p63 isotype in tumorigenesis is still confusing. Constitutively produced or induced in inflammatory conditions, human beta-defensins (HbetaDs) are cationic peptides involved in host defenses against bacteria, viruses and fungi. Here, we investigated both the role of p63 proteins in the regulation of HbetaDs and the implication of these antimicrobial peptides in tumor (lymph)angiogenesis. Thus, in contrast to TAp63 isotypes, we observed that DeltaNp63 proteins (alpha, beta, gamma) induce HbetaD1, 2 and 4 expression. Similar results were observed in cancer tissues and cell lines. We next demonstrated that DeltaNp63-overexpressing SCC are associated with both a poor prognosis and a high tumor vascularisation and lymphangiogenesis. Moreover, we showed that HbetaDs exert a chemotactic activity for (lymphatic) endothelial cells in a CCR6-dependent manner. The ability of HbetaDs to enhance (lymph)angiogenesis in vivo was also evaluated. We observed that HbetaDs increase the vessel number and induce a significant increase in relative vascular area compared to negative control. Taken together, the results of this study suggest that DeltaNp63-regulated HbetaD could promote tumor (lymph)angiogenesis in SCC microenvironment. [less ▲]

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See detaildeltaPlotR: An R package for differential item functioning analysis with Angoff's Delta Plot
Magis, David ULg; Facon, Bruno

in Journal of Statistical Software (2014), 59(1), 1-19

Angoff's delta plot is a straightforward and not computationally intensive method to identify differential item functioning (DIF) among dichotomously scored items. This approach was recently improved by ... [more ▼]

Angoff's delta plot is a straightforward and not computationally intensive method to identify differential item functioning (DIF) among dichotomously scored items. This approach was recently improved by proposing an optimal threshold selection and by considering several item purification processes. Moreover, to support practical DIF analyses with the delta plot and these improvements, the R package deltaPlotR was also developed. The purpose of this paper is twofold: to outline the delta plot by describing the original method and its recent improvements in a user-oriented way, and to illustrate the structure and performances of the deltaPlotR package. A real data set about language skill assessment is being analyzed as an illustrative example. [less ▲]

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See detailDelusions from a cognitive psychopathological approach
Laroi, Frank ULg

Scientific conference (2007, December 11)

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See detailDelvaux ou Delvaux de Fenffe, Jean Charles
Opsomer, Carmélia ULg

in Duvosquel, Jean-Marie (Ed.) Nouvelle Biographie nationale (2012)

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See detailDEM modeling of ball mills with experimental validation: influence of contact parameters on charge motion and power draw
Boemer, Dominik ULg; Ponthot, Jean-Philippe ULg

in Computational Particle Mechanics (2016)

Discrete element method simulations of a 1:5-scale laboratory ball mill are presented in this paper to study the influence of the contact parameters on the charge motion and the power draw. The position ... [more ▼]

Discrete element method simulations of a 1:5-scale laboratory ball mill are presented in this paper to study the influence of the contact parameters on the charge motion and the power draw. The position density limit is introduced as an efficient mathematical tool to describe and to compare the macroscopic charge motion in different scenarios, i.a. with different values of the contact parameters. While the charge motion and the power draw are relatively insensitive to the stiffness and the damping coefficient of the linear spring-slider-damper contact law, the coefficient of friction has a strong influence since it controls the sliding propensity of the charge. Based on the experimental calibration and validation by charge motion photographs and power draw measurements, the descriptive and predictive capabilities of the position density limit and the discrete element method are demonstrated, i.e. the real position of the charge is precisely delimited by the respective position density limit and the power draw can be predicted with an accuracy of about 5 %. [less ▲]

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See detailDEM time series of an agricultural watershed
Pineux, Nathalie ULg; Lisein, Jonathan ULg; Swerts, Gilles ULg et al

in Geophysical Research Abstracts (2014), 16

the field data come from plot scale studies, the watershed scale seems to be more appropriate to understand them. Currently, small unmanned aircraft systems and images treatments are improving. In this ... [more ▼]

the field data come from plot scale studies, the watershed scale seems to be more appropriate to understand them. Currently, small unmanned aircraft systems and images treatments are improving. In this way, 3D models are built from multiple covering shots. When techniques for large areas would be to expensive for a watershed level study or techniques for small areas would be too time consumer, the unmanned aerial system seems to be a promising solution to quantify the erosion and deposition patterns. The increasing technical improvements in this growth field allow us to obtain a really good quality of data and a very high spatial resolution with a high Z accuracy. In the center of Belgium, we equipped an agricultural watershed of 124 ha. For three years (2011-2013), we have been monitoring weather (including rainfall erosivity using a spectropluviograph), discharge at three different locations, sediment in runoff water, and watershed microtopography through unmanned airborne imagery (Gatewing X100). We also collected all available historical data to try to capture the “long-term” changes in watershed morphology during the last decades: old topography maps, soil historical descriptions, etc. An erosion model (LANDSOIL) is also used to assess the evolution of the relief. Short-term evolution of the surface are now observed through flights done at 200m height. The pictures are taken with a side overlap equal to 80%. To precisely georeference the DEM produced, ground control points are placed on the study site and surveyed using a Leica GPS1200 (accuracy of 1cm for x and y coordinates and 1.5cm for the z coordinate). Flights are done each year in December to have an as bare as possible ground surface. Specific treatments are developed to counteract vegetation effect because it is know as key sources of error in the DEM produced by small unmanned aircraft systems. The poster will present the older and more recent changes of relief in this intensely exploited watershed and notably show how unmanned airborne imagery might be of help in DEM dynamic modelling to support soil conservation research. [less ▲]

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See detailDemain ne meurt jamais, ou les « écofictions » décryptées. Compte rendu de CHELEBOURG Christian, Les écofictions. Mythologies de la fin du monde »
Stienon, Valérie ULg

in Culture, le Magazine Culturel de l'Université de Liège (2012)

Les mises en garde catastrophistes sur l’avenir écologique de la planète font partie de notre quotidien culturel et audio-visuel depuis une bonne décennie. Des imaginaires multiples en résultent. Ils ... [more ▼]

Les mises en garde catastrophistes sur l’avenir écologique de la planète font partie de notre quotidien culturel et audio-visuel depuis une bonne décennie. Des imaginaires multiples en résultent. Ils constituent les résidus médiatiques de ces discours et représentations convergeant dans l’urgence d’une situation planétaire trop complaisamment présentée comme courant à sa perte. Christian Chelebourg les baptise « écofictions » et les soumet avec virtuosité à une salutaire lecture qui révèle tout à la fois leurs fondements narratifs et leurs implications sociales. [less ▲]

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See detailDemain, quelles orientations pour les co-produits ?
Beckers, Yves ULg

Conference (2002, April 19)

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See detailDemand for flexibility in the power system under different shares of renewable generation
Spisto, Amanda; Möbius, Thomas; Quoilin, Sylvain ULg

in European Energy Market (EEM), 2015 12th International Conference on the (2015, May)

In 2014 EU leaders agreed on a new framework for 2030 for climate change and energy policies. By 2030 targets renewable power in the European market should be at least 27% of the EU's energy consumption ... [more ▼]

In 2014 EU leaders agreed on a new framework for 2030 for climate change and energy policies. By 2030 targets renewable power in the European market should be at least 27% of the EU's energy consumption. This major change will require the deployment of flexible technologies to ensure stability and security of supply. In this paper we study the role of electricity storage and renewable power curtailment as possible options in providing flexibility when high shares of renewable enter the system. We simulate the Italian power market with a power dispatch model developed in GAMS. Our results for the benchmark scenario show that increases in shares of renewables are associated with increases in the demand for flexibility. When we add one storage plant in three zones at a time - SUD, SICI, NORD - demand for flexibility, respectively does not change, reduces and increases compared to the benchmark. [less ▲]

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