References of "2006"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailModelling weathering processes at the catchment scale: The WITCH numerical model
Godderis, Y.; François, Louis ULg; Probst, A. et al

in Geochimica et Cosmochimica Acta (2006), 70(5), 1128-1147

A numerical model of chemical weathering in soil horizons and underlying bedrock (WITCH) has been coupled to a numerical model of water and carbon cycles in forest ecosystems (ASPECTS) to simulate the ... [more ▼]

A numerical model of chemical weathering in soil horizons and underlying bedrock (WITCH) has been coupled to a numerical model of water and carbon cycles in forest ecosystems (ASPECTS) to simulate the concentration of major species within the soil horizons and the stream of the Strengbach granitic watershed, located in the Vosges Mountains (France). For the first time, simulations of solute concentrations in soil layers and in the catchment river have been performed on a seasonal basis. The model is able to reproduce the concentrations of most major species within the soil horizons, as well as catching the first-order seasonal fluctuations of aqueous calcium, magnesium and silica concentrations. However, the WITCH model underestimates concentrations of Mg2+ and silica at the spring of the catchment stream, and significantly underestimates Ca2+ concentration. The deficit in calculated calcium can be compensated for by dissolution of trace apatite disseminated in the bedrock. However, the resulting increased Ca2+ release yields important smectite precipitation in the deepest model layer (in contact with the bedrock) and subsequent removal of large amount of silica and magnesium from solution. In contrast, the model accurately accounts for the concentrations of major species (Ca, Mg and silica) measured in the catchment stream when precipitation of clay minerals is not allowed. The model underestimation of Mg2+ and H4SiO4 concentrations when precipitation of well crystallized smectites is allowed strongly suggests that precipitation of well crystallized clay minerals is overestimated and that more soluble poorly crystallized and amorphous materials may be forming. In agreement with observations on other watersheds draining granitic rocks, this study indicates that highly soluble trace calcic phases control the aqueous calcium budget in the Strengbach watershed. (c) 2005 Elsevier Inc. All rights reserved. [less ▲]

Detailed reference viewed: 40 (3 ULg)
Full Text
Peer Reviewed
See detailSérologie infectieuse: interprétation des résultats et pièges à éviter
Huynen, Pascale ULg; Hayette, Marie-Pierre ULg; Melin, Pierrette ULg et al

in Revue Médicale de Liège (2006), 61(12), 827-833

In Medical Microbiology, in addition to the direct methods of indentification of infectious agentss, the serologic indirect techniques by quantification of antibodies have extremely useful in infectiology ... [more ▼]

In Medical Microbiology, in addition to the direct methods of indentification of infectious agentss, the serologic indirect techniques by quantification of antibodies have extremely useful in infectiology, for the diagnosis and the therapeutic or vaccination follow-up as well as for epidemiologic enquiries, serodiagnosis methods have significantly improved. Meanwhile, results may reveal hard to interpret, especially when are tries to specify the time of the beginning of an infection. The results require in the majority of the cases to be compared on two subsequent serum samples, to observe a possible increase in antibodies level. In addition, the infectious serology results may not be considered as the only element of final diagnosis. In all cases, they have to be interpreted and challenged against the clinical context. [less ▲]

Detailed reference viewed: 72 (8 ULg)
Full Text
Peer Reviewed
See detailPatrons, gens d'affaires et banquiers. Hommages à Ginette Kurgan-van Hentenryk
Geerkens Provin, Eric ULg

in Cahiers d'Histoire du Temps Présent = Bijdragen tot de Eigentijdse Geschiedenis (2006), 17

Detailed reference viewed: 50 (5 ULg)
Peer Reviewed
See detailL'endoctrinement affectif du citoyen, La politique sous l'éclairage des sciences psychologiques: Préface
Hermans, Michel ULg

in Pleyers, Gordy (Ed.) L'endoctrinement affectif du citoyen, La politique sous l'éclairage des sciences psychologiques (2006)

Detailed reference viewed: 18 (3 ULg)
Full Text
Peer Reviewed
See detailOn the application and interpretation of Keeling plots in paleo climate research - Deciphering δ 13C of atmospheric CO 2 measured in ice cores
Köhler, Peter; Fischer, Hubertus; Schmitt, Jochen et al

in Biogeosciences (2006), 3(4), 539-556

The Keeling plot analysis is an interpretation method widely used in terrestrial carbon cycle research to quantify exchange processes of carbon between terrestrial reservoirs and the atmosphere. Here, we ... [more ▼]

The Keeling plot analysis is an interpretation method widely used in terrestrial carbon cycle research to quantify exchange processes of carbon between terrestrial reservoirs and the atmosphere. Here, we analyse measured data sets and artificial time series of the partial pressure of atmospheric carbon dioxide (pCO(2)) and of delta C-13 of CO2 over industrial and glacial/interglacial time scales and investigate to what extent the Keeling plot methodology can be applied to longer time scales. The artificial time series are simulation results of the global carbon cycle box model BICYCLE. The signals recorded in ice cores caused by abrupt terrestrial carbon uptake or release loose information due to air mixing in the firn before bubble enclosure and limited sampling frequency. Carbon uptake by the ocean cannot longer be neglected for less abrupt changes as occurring during glacial cycles. We introduce an equation for the calculation of long-term changes in the isotopic signature of atmospheric CO2 caused by an injection of terrestrial carbon to the atmosphere, in which the ocean is introduced as third reservoir. This is a paleo extension of the two reservoir mass balance equations of the Keeling plot approach. It gives an explanation for the bias between the isotopic signature of the terrestrial release and the signature deduced with the Keeling plot approach for long-term processes, in which the oceanic reservoir cannot be neglected. These deduced isotopic signatures are similar (-8.6 parts per thousand) for steady state analyses of long-term changes in the terrestrial and marine biosphere which both perturb the atmospheric carbon reservoir. They are more positive than the delta C-13 signals of the sources, e.g. the terrestrial carbon pools themselves (similar to -25 parts per thousand). A distinction of specific processes acting on the global carbon cycle from the Keeling plot approach is not straightforward. In general, processes related to biogenic fixation or release of carbon have lower y-intercepts in the Keeling plot than changes in physical processes, however in many case they are indistinguishable (e.g. ocean circulation from biogenic carbon fixation). [less ▲]

Detailed reference viewed: 76 (9 ULg)
Full Text
Peer Reviewed
See detailMyeloperoxidase concentration in bronchoalveolar lavage fluid from healthy horses and those with recurrent airway obstruction
Art, Tatiana ULg; Franck, Thierry ULg; Lekeux, Pierre ULg et al

in Canadian Journal of Veterinary Research = Revue Canadienne de Recherche Vétérinaire (2006), 70(4), 291-296

The aim of this work was to measure the myeloperoxidase (MPO) concentration in bronchoalveolar lavage (BAL) fluid collected from horses with recurrent airway obstruction (RAO), both in crisis and in ... [more ▼]

The aim of this work was to measure the myeloperoxidase (MPO) concentration in bronchoalveolar lavage (BAL) fluid collected from horses with recurrent airway obstruction (RAO), both in crisis and in remission, as well as from healthy horses. Seven horses with RAO were exposed to moldy hay until the maximum change in pleural pressure was greater than 1.5 kPa. At that point, BAL was performed, and the total cell counts and percentages in the fluid were immediately determined. To measure the MPO concentration in BAL-fluid supernatant, we used a specific enzyme-linked immunosorbent assay with polyclonal antibodies against equine MPO. The tests were repeated on the horses with RAO after they had spent 2 mo on pasture. Six healthy horses serving as controls underwent the same tests. The absolute and relative neutrophil counts and the MPO concentration in the BAL fluid were significantly greater in the horses with an RAO crisis than in the control horses. After 2 mo on pasture, the horses that had been in RAO crisis were clinically normal, and their neutrophil counts and MPO levels in BAL fluid had significantly decreased; during remission their neutrophil counts were not significantly different from those in the healthy horses, but their MPO concentration remained significantly higher. This study showed that determining the MPO concentration in a horse's BAL fluid is technically possible and that during remission from RAO the concentration remains higher than normal. Thus, MPO may be a marker of neutrophil presence and activation in the lower airways. [less ▲]

Detailed reference viewed: 64 (12 ULg)
Peer Reviewed
See detailEchinoderm skeletons record sea temperatures
Ranner, Herwig; Ladrière, Ophélie ULg; Navez, Jacques et al

Poster (2006)

Detailed reference viewed: 11 (2 ULg)
Full Text
See detailALADDIN: an optimized ground-based precursor for DARWIN
Coudé du Foresto, Vincent; Absil, Olivier ULg; Barillot, Marc et al

in Aime, C.; Vakili, F. (Eds.) Direct Imaging of Exoplanets: Science & Techniques (2006)

The ALADDIN concept is an integrated Antarctic-based L-band experiment whose purpose is to demonstrate nulling interferometry and to prepare the DARWIN mission. Because of their privileged location, the ... [more ▼]

The ALADDIN concept is an integrated Antarctic-based L-band experiment whose purpose is to demonstrate nulling interferometry and to prepare the DARWIN mission. Because of their privileged location, the relatively modest collectors (1 m) and baseline (up to 40 m) are sufficient to achieve a sensitivity (in terms of detectable zodi levels) which is about twice better than that of a nulling instrument on a large interferometer (such as GENIE at the VLTI), and to reach the 20-zodi threshold value identified to carry out the DARWIN precursor science. These numbers are based on a preliminary design study by Alcatel Alenia Space and were obtained using the same simulation software as the one employed for GENIE. The integrated design enables top-level optimization and full access to the light collectors for the duration of the experiment, while reducing the complexity of the nulling breadboard. [less ▲]

Detailed reference viewed: 6 (1 ULg)
Full Text
Peer Reviewed
See detailLipid-Destabilising Properties Of A Peptide With Structural Plasticity
Lorin, A.; Thomas, Annick ULg; Stroobant, V. et al

in Chemistry and Physics of Lipids (2006), 141(1-2), 185-96

The Chameleon peptide (Cham) is a peptide designed from two regions of the GB1 protein, one folded as an alpha-helix and the other as a beta structure. Depending on the environment, the Cham peptide ... [more ▼]

The Chameleon peptide (Cham) is a peptide designed from two regions of the GB1 protein, one folded as an alpha-helix and the other as a beta structure. Depending on the environment, the Cham peptide adopts an alpha or a beta conformation when inserted in different locations of GB1. This environment dependence is also observed for tilted peptides. These short protein fragments, able to destabilise organised system, are mainly folded in beta structure in water and in alpha helix in a hydrophobic environment, like the lipid bilayer. In this paper, we tested whether the Cham peptide can be qualified as a tilted peptide. For this, we have compared the properties of Cham peptide (hydrophobicity, destabilising properties, conformation) to those of tilted peptides. The results suggest that Cham is a tilted peptide. Our study, together the presence of tilted fragments in transconformational proteins, suggests a relationship between tilted peptides and structural lability. [less ▲]

Detailed reference viewed: 16 (2 ULg)
Full Text
Peer Reviewed
See detailPreliminary development of real time PCR for quantification of Erwinia species infecting potato tubers.
Massart, Sébastien ULg; Moh, A.; Roussel, S. et al

in Communications in agricultural and applied biological sciences (2006), 71(3 Pt B), 1171-1173

Detailed reference viewed: 11 (0 ULg)
Peer Reviewed
See detailSound production mechanism in carapid fish: first example with a slow muscle
Parmentier, Eric ULg; Lagardère, Jean-Paul; Vandewalle, Pierre ULg et al

Conference (2006)

Detailed reference viewed: 6 (0 ULg)
See detailLes clauses d'un contrat de vie commune d'un couple non marié
Dehalleux, Virginie ULg

in Leleu, Yves-Henri (Ed.) Aspects actuels de la programmation patrimoniale dans la famille (2006)

Detailed reference viewed: 25 (0 ULg)
Full Text
Peer Reviewed
See detailRecurrent pancreatitis in mitochondrial cytopathy.
DEBRAY, François-Guillaume ULg; Drouin, Eric; Herzog, Denise et al

in American Journal of Medical Genetics. Part A (2006), 140(21), 2330-5

Diabetes mellitus and exocrine insufficiency are the commonest pancreatic manifestations of mitochondrial diseases. In contrast, pancreatitis has rarely been described in mitochondrial syndromes. We ... [more ▼]

Diabetes mellitus and exocrine insufficiency are the commonest pancreatic manifestations of mitochondrial diseases. In contrast, pancreatitis has rarely been described in mitochondrial syndromes. We report on a patient with Kearns-Sayre syndrome and recurrent episodes of acute pancreatitis for which no explanation could be found other than the associated mitochondrial dysfunction. Interestingly, pharmacological disruption of mitochondrial metabolism in various models as well as in patients can cause pancreatitis, further supporting this association. A diagnosis of pancreatitis should be considered in any patients with mitochondrial disease and recurrent abdominal pain. [less ▲]

Detailed reference viewed: 13 (0 ULg)
Full Text
Peer Reviewed
See detailStealth Distributed Hash Table: A robust and flexible super-peered DHT
Brampton, A.; MacQuire, A.; Rai, I. A. et al

in Proceedings of the 2006 ACM CoNEXT conference (2006)

Detailed reference viewed: 2 (0 ULg)
Full Text
Peer Reviewed
See detailLa PESD après l'échec constitutionnel européen
Dumoulin, André ULg

in Sur, Serge (Ed.) Annuaire français de relations internationales 2006 (2006)

La crise autour du Traité constitutionnel a épargné la Politique européenne de sécurité et de défense. Le Conseil européen va devoir néanmoins récupérer certaines avancées de la PESD qui avait été ... [more ▼]

La crise autour du Traité constitutionnel a épargné la Politique européenne de sécurité et de défense. Le Conseil européen va devoir néanmoins récupérer certaines avancées de la PESD qui avait été introduite directement dans ce document à haute valeur symbolique. Au-delà d’une visibilité pragmatique de l’UE en matière de missions civilo-militaires, la PESD pourrait être autant soutenue que fragilisée par de nouvelles configurations organiques imposées par les événements institutionnels européens : structure de coopération ad hoc, noyaux durs, cercles thématiques, union dans l’union. Toutes configurations qui complexifient la lecture d’une Union européenne « sans frontières ». [less ▲]

Detailed reference viewed: 24 (0 ULg)
See detail1798: contre les républicains français, une identité belge a posteriori
Raxhon, Philippe ULg; van Ypersele, Laurence

in Bruneel, Claude; Bernard, Bruno (Eds.) Les prémices de l'identité belge avant 1830? (2006)

Detailed reference viewed: 28 (3 ULg)
Full Text
Peer Reviewed
See detailRésumé CEDH, 11 octobre 2005, NA et autres c. Turquie
Delnoy, Michel ULg

in Aménagement - Environnement (2006), 2

Detailed reference viewed: 14 (1 ULg)