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See detailThe new gravitational lens candidate Q 1208+1011 and the importance of high quality data.
Magain, Pierre ULg; Surdej, Jean ULg; Vanderriest, C. et al

in The Messenger (1992), 67

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See detailA new heuristic approach to deal with discrete variables in optimal power flow computations
Capitanescu, Florin ULg; Wehenkel, Louis ULg

in IEEE Power Tech conference (2009, July)

This paper proposes a new heuristic approach to deal with discrete variables in an optimal power flow (OPF). This approach relies on the first order sensitivity of the objective and inequality constraints ... [more ▼]

This paper proposes a new heuristic approach to deal with discrete variables in an optimal power flow (OPF). This approach relies on the first order sensitivity of the objective and inequality constraints with respect to the discrete variables. The impact of a discrete variable change on the objective and inequality constraints is aggregated into a merit function. The proposed approach searches iteratively for better discrete variable settings as long as the problem solution can be improved. We provide numerical results with the proposed approach on four test systems up to 1203 buses and for the OPF problem of active power loss minimization. [less ▲]

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See detailA new hierarchical approach for dynamic state prediction and filtering in electric power systems
Mallieu, Didier; Rousseaux, Patricia ULg; Van Cutsem, Thierry ULg et al

in Proceedings of the IFAC Symposium on Power Systems and Power Plant Control (1986)

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See detailNew high resolution pollen record from Hautes-Fagnes.
Danu, Mihaela; Streel, Maurice; Allan, Mohammed ULg et al

in Analele Stiintifice ale Universitatii "Alexandru Ioan Cuza". Sectiunea Sociologie si Asistenta Sociala = Scientific Annals of the “Alexandru Ioan Cuza” University. Sociology and Social Work Section (2013), 59(1), 15-25

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See detailA new high-order high-frequency integral equation method for the solution of scattering problems. I. Single scattering configurations
Bruno, O.; Geuzaine, Christophe ULg; Reitich, F.

in Proceedings of the 20th Annual Review of Progress in Applied Computational Electromagnetics, ACES 2004 (2004)

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See detailA new high-order high-frequency integral equation method for the solution of scattering problems. II. Multiple scattering configurations
Bruno, O.; Geuzaine, Christophe ULg; Reitich, F.

in Proceedings of the 20th Annual Review of Progress in Applied Computational Electromagnetics, ACES 2004 (2004)

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See detailNew high-resolution pollen record from Hautes-Fagnes Belgium
Danu, M; Streel, Maurice ULg; Allan, M et al

in Scientific Annals of the “Alexandru Ioan Cuza” University. (New series) Section 2 Vegetal Biology (2013), 59(1), 15-25

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See detailNew Histochemical and Ultrastructural Observations on Normal Bovine Tonsils
Velinova, Maria; Thielen, Caroline ULg; Mélot, France ULg et al

in Veterinary Record : Journal of the British Veterinary Association (2001), 149(20), 613-7

Samples of normal bovine palatine tonsils were examined by light and electron microscopy. Like human tonsils, they were composed of crypts, subepithelial areas, follicles, and T-dependent zones, but their ... [more ▼]

Samples of normal bovine palatine tonsils were examined by light and electron microscopy. Like human tonsils, they were composed of crypts, subepithelial areas, follicles, and T-dependent zones, but their well-developed capsule subdivided the lymphoid tissue by connective septa. B cells formed the major lymphoid component. The follicles and T-dependent zones had morphological and histochemical features typical of peripheral lymph organs. Follicular dendritic cells were isolated and shown to be similar to human follicular dendritic cells. [less ▲]

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See detailNew hope for CSWS/ESES treatment: Topiramate?
Symann, S.; Rucquoy, M.; Misson, Jean-Paul ULg et al

in European Journal of Paediatric Neurology : Official Journal of the European Paediatric Neurology Society (1999)

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See detailNew host and geographical distribution for the pearlfish Carapus mourlani (Pisces, Carapidae) with a discussion on Carapini nomenclature and biogeography
Parmentier, Eric ULg; Mercier, Annie; Hamel, Jean-François

in Copeia (2006), 2006

Specimens of the pearlfish Carapus mourlani (Carapidae) were observed for the first time in association with the sea cucumber Isostichopus fuscus (Holothuroidea: Echinodermata) along the coast of Ecuador ... [more ▼]

Specimens of the pearlfish Carapus mourlani (Carapidae) were observed for the first time in association with the sea cucumber Isostichopus fuscus (Holothuroidea: Echinodermata) along the coast of Ecuador. Out of 4345 sea cucumbers collected from various depths between 5 and 60 m, 12 harbored a pearlfish either in the coelomic cavity, the respiratory tree, or the digestive tract, yielding a prevalence of ca. 0.0028. The presence of C. mourlani appeared to be detrimental to the holothurian host in some cases. Side effects resulting from coelomic cavity infections included less advanced gonad maturity (reduced gonadal tubule diameter and length, lower ratio of mature oocytes) and a significant proportion of necrotic and shriveled gonadal tubules, devoid of gametes. Aside from discussing this evidence, the present paper briefly describes the biology of the pearlfish, its relationship with the host, and its daily activity cycle. [less ▲]

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See detailA new HPLC method for the assay of alkaloids in Strychnos nux-vomica and Strychnos ignatii
Gadi Biala, Rose; Tits, Monique ULg; Wauters, Jean-Noël ULg et al

in Fitoterapia (1996), 67(2), 163-165

A reversed-phase high performance liquid chromatographic procedure was developed for the qualitative and quantitative analysis of the alkaloids in S. nux-vomica and S. ignatii.

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See detailA new HPLC method to quantify alliin, the major sulfur compound in garlic
DETHIER, Bérénice ULg; Laloux, Morgan ULg; Hanon, Emilien et al

Poster (2012, February 10)

Garlic is recognized for centuries for its health benefits, mostly linked to its sulfur- components. Among the products extracted from the cloves, alliin retained our attention. Alliin was synthesized ... [more ▼]

Garlic is recognized for centuries for its health benefits, mostly linked to its sulfur- components. Among the products extracted from the cloves, alliin retained our attention. Alliin was synthesized. This process leads to two stereoisomers. Their HPLC separation was the aim of this work. The method described in the literature (amino column, detection at 210 nm) showed a resolution of 1,1 between the isomers. A second method was developed: the stationary phase was porous graphitic carbon and a water-ACN gradient was used for the elution. It provided a resolution of 3,2, was shorter and underwent the validation process. The method leads to satisfying results. The separation is excellent, and the validation criteria are fulfilled. This may be valuable for future research on garlic. [less ▲]

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See detailA new hybrid approach for modelling groundwater flow in karst aquifers
Willems, Thibault ULg; Hakoun, Vivien ULg; Renard, Philippe et al

Conference (2015, September)

Groundwater flow modelling in karst aquifers represents a real challenge that requires adapted methods. The applicability of an innovative hybrid approach for modelling groundwater flow in karst aquifers ... [more ▼]

Groundwater flow modelling in karst aquifers represents a real challenge that requires adapted methods. The applicability of an innovative hybrid approach for modelling groundwater flow in karst aquifers, namely the Hybrid Finite Element Mixing Cell (HFEMC) method, is evaluated. The hybrid approach consists in combining a classical finite element (FE) model, to model slow flow in the rock matrix, with spatially distributed lumped reservoirs, to model fast flow in the karst conduits network. Water exchanges between the rock matrix and the conduits network are accounted for by means of an internal Fourier boundary conditions (BC). This BC (1st order exchange relation) allows to control the magnitude of water transfers between fast and slow flow domains. We tested the applicability of the HFEMC method on a schematic synthetic domain and on a real karst system. In the synthetic case analysis, we discussed dynamic processes of groundwater storage occurring in the karst system during a recharge pulse. The study focuses on the influence of selected parameters on representative variables such as the discharge curve of the karst system or pressure and mass transfers between conduits and rock matrix sub-domains. In this way, an inversion of the hydraulic gradient between karst conduits and the surrounding rock matrix is shown to occur during the recharge pulse. This phenomenon results in a temporary storage of water from conduits to the rock matrix, which impacts the modelled discharge curve. The first test performed on a real study site, the Noiraigue spring karst system (Jura mountains, Switzerland), exemplify the use of two separated lumped reservoirs for describing the conduits network, which allows to consider two base levels in the karst system. It also points out the challenges to face when modelling a complex natural karst system with the HFEMC approach. The results obtained show that the HFEMC approach is a good candidate to model groundwater flow in karst aquifers. [less ▲]

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See detailA new hybrid exchange-correlation functional for accurate prediction of the electronic and structural properties of ferroelectric oxides
Bilc, Daniel ULg; Orlando, R.; Shaltaf, R. et al

in Physical Review. B, Condensed Matter and Materials Physics (2008), 77

Using a linear combination of atomic orbitals approach, we report a systematic comparison of various density functional theory (DFT) and hybrid exchange-correlation functionals for the prediction of the ... [more ▼]

Using a linear combination of atomic orbitals approach, we report a systematic comparison of various density functional theory (DFT) and hybrid exchange-correlation functionals for the prediction of the electronic and structural properties of prototypical ferroelectric oxides. It is found that none of the available functionals is able to provide, at the same time, accurate electronic and structural properties of the cubic and tetragonal phases of BaTiO3 and PbTiO3. Some, although not all, usual DFT functionals predict the structure with acceptable accuracy, but always underestimate the electronic band gaps. Conversely, common hybrid functionals yield an improved description of the band gaps, but overestimate the volume and atomic distortions associated with ferroelectricity, giving rise to an unacceptably large c/a ratio for the tetragonal phases of both compounds. This supertetragonality is found to be induced mainly by the exchange energy corresponding to the generalized gradient approximation (GGA) and, to a lesser extent, by the exact exchange term of the hybrid functional. We thus propose an alternative functional that mixes exact exchange with the recently proposed GGA of Wu and Cohen [Phys. Rev. B 73, 235116 (2006)] which, for solids, improves over the treatment of exchange of the most usual GGA's. The new functional renders an accurate description of both the structural and electronic properties of typical ferroelectric oxides. [less ▲]

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See detailNew Hypotheses on serial offender's spatial behaviour
Trotta, Marie ULg

in Pundt, Hardy; Bernard, Lars (Eds.) Proceedings 1st AGILE PhD School (2012, March)

Geographic profiling is a methodology used to delineate a prior search area for a serial offender. Two new hypotheses integrating recent researches on offender’s behaviour are proposed to broaden the ... [more ▼]

Geographic profiling is a methodology used to delineate a prior search area for a serial offender. Two new hypotheses integrating recent researches on offender’s behaviour are proposed to broaden the applicability of the techniques of geographic profiling to commuters and irregular patterns of crimes. The journeysto- crime variance and place attractiveness will be successively integrated in GP methods. In order to evaluate the variance of the journeys-to-crime on real road network, a method based on least square adjustment in raster mode is developed. A real case of serial rapes illustrates the effectiveness of those assumptions for a non-uniform pattern of crimes. [less ▲]

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