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See detail'Dolomite lime effects on acid forest soils: traditional and molecular approaches
Carnol, Monique ULg

Conference (2000, November)

The study of biogeochemical processes in soil has long been restricted by the techniques available for investigating the micro-organisms concerned. In particular, isolated nitrifying bacteria are not ... [more ▼]

The study of biogeochemical processes in soil has long been restricted by the techniques available for investigating the micro-organisms concerned. In particular, isolated nitrifying bacteria are not active in culture media below pH 5.5-6.0, and it is not clear to what extent these strains, if at all, are active in the acid soils of temperate forests. Since DNA/RNA based microbiological techniques do not require isolation of bacterial strains, they provide a new, powerful approach to gain insight into the nitrification process. We therefore combined the use of a large scale field experiment and laboratory soil incubations with molecular analysis of the nitrifying bacterial community to investigate the effect of dolomite lime on the nitrification process in the soil of the Belgian Ardenne. In this area, soils are naturally poor in magnesium and liming at moderate doses has been suggested to alleviate soil acidification and nutritional deficiencies. However, possible side effects needed to be evaluated, in particular on the nitrification process. As nitrification may be linked to soil acidification, cation leaching, aluminium mobilisation and N2O emission, increased knowledge is essential when evaluating effects of global environmental change and management strategies on forest ecosystems. The effects of dolomite lime (3-5 T/ha) were investigated at the watershed (80 ha, mainly Picea abies), plot (Quercus petraea and Picea abies stands) and laboratory level. Runoff chemistry, soil solution, net nitrate production in the laboratory and the community structure of ammonium oxidising bacteria (by PCR amplification of 16S-RNA genes, Denaturing Gradient Gel Electrophoresis - DGGE, sequence analysis and hybridisation) were analysed. In the watersheds, consequences on runoff water chemistry were minor. However, in the plot study, soil solution nitrate concentrations were significantly increased through liming in the Quercus plots. Increased net nitrification in the Quercus stand was confirmed by potential net nitrification measurements in the laboratory, whereas soil pH rose in both stands. The impact of liming on potential net nitrification was not related to a shift in the 16S rDNA DGGE community profile of ammonia-oxidising bacteria. The DDGE profile, combined with hybridisation and sequencing of cut out bands revealed a dominance of Nitrosomonas europea-like sequences and a minor presence of Nitrosospira cluster 2-like sequences. These results contrast with several reports suggesting a dominance of Nitrosospira-like organisms among ammonia oxidiser communities in acid soils. Our study reflects the great potential of combining new molecular techniques with conventional methods for improving our knowledge on the ecology of biogeochemical processes. [less ▲]

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See detailDolphins of the Bay
Vermeulen, Els ULg; Balbiano, Alejandro; Suarez, Hilda

Book published by LosBiologos Ediciones - 1 (2014)

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See detailDomain Decomposition Methods for Time-Harmonic Electromagnetic Waves with High Order Whitney Forms
Marsic, Nicolas ULg; Waltz, Caleb; Lee, Jin-Fa et al

in IEEE Transactions on Magnetics (2016), 52(3),

Classically, domain decomposition methods (DDM) for time-harmonic electromagnetic wave propagation problems make use of the standard, low order, Nédélec basis functions. This paper analyzes the ... [more ▼]

Classically, domain decomposition methods (DDM) for time-harmonic electromagnetic wave propagation problems make use of the standard, low order, Nédélec basis functions. This paper analyzes the convergence rate of DDM when higher order finite elements are used for both volume and interface discretizations, in particular when different orders are used in the volume and on the interfaces. [less ▲]

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See detailDomain generality of serial order processing in short-term memory : Evidence from musical and verbal domains.
Majerus, Steve ULg; Gorin, Simon ULg

Conference (2014, May 27)

Recent models of verbal short-term memory (STM) propose a distinction between item storage processes, which are viewed as domain-specific, and order storage processes, which are considered by some authors ... [more ▼]

Recent models of verbal short-term memory (STM) propose a distinction between item storage processes, which are viewed as domain-specific, and order storage processes, which are considered by some authors to be domain-general, at least as regards verbal and visual STM domains. Here we provide further evidence for domain-specific item STM processes and domain-general order STM processes by comparing item and order processing in verbal and musical STM domains. The musical domain is particularly relevant here given its reliance on different kinds of sequential processes (e.g., tones successions, rhythm). Using an interindividual differences approach, we administered to a group of young healthy adults different tasks requiring retention of item identity for words or tones, and tasks requiring retention of serial order information for word sequences or note sequences, as well as a task measuring retention abilities for rhythmic information. For the item STM tasks, we observed strong intercorrelations for within-domain WM measures, but not between-domain WM measures, after controlling for general WM abilities. For the serial order STM tasks, we observed a specific association with the rhythm STM task. These results highlight the importance of temporal sequential processes, as measured by the rhythm STM task, as a driving factor of domain-general STM processes in verbal and musical domains. They furthermore confirm the domain-specificity of item STM processes. [less ▲]

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See detailA domain of TEL conserved in a subset of ETS proteins defines a specific oligomerization interface essential to the mitogenic properties of the TEL-PDGFR beta oncoprotein.
Jousset, C.; Carron, C.; Boureux, A. et al

in EMBO Journal (1997)

TEL is a novel member of the ETS family of transcriptional regulators which is frequently involved in human leukemias as the result of specific chromosomal translocations. This study shows that the amino ... [more ▼]

TEL is a novel member of the ETS family of transcriptional regulators which is frequently involved in human leukemias as the result of specific chromosomal translocations. This study shows that the amino-terminal domain conserved in a subset of the ETS proteins has evolved to generate a specialized protein-protein interaction interface which is likely to be an important determinant of their specificity as transcriptional regulators. [less ▲]

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See detailDomain of validity of a 1D second order perturbative approach for the effects of rotation on stellar oscillations
Ouazzani, R*-M; Goupil, M*-J; Dupret, Marc-Antoine ULg et al

in Communications in Asteroseismology (2009), 158

At rotational velocities such as that of upper Main Sequence stars - between 50 to 200 km/s - the effects of rotation on oscillation frequencies must be included. Considering the accuracy reached by ... [more ▼]

At rotational velocities such as that of upper Main Sequence stars - between 50 to 200 km/s - the effects of rotation on oscillation frequencies must be included. Considering the accuracy reached by available ground-based and space observations, the aim of this study is to determine the limits - in terms of rotational velocity - of a perturbative approach to model the effects of rotation on oscillation frequencies. We thus compare the oscillation frequencies computed by 1D second order perturbative methods to the ones obtained in Reese et al. (2006) - direct integration of a 2D eigenvalue system. To do so, we use polytropic models (N=3) in uniform rotation, and we discuss the results for a beta Cephei star (8.2 M_{o}, 5.04 R_{o}). [less ▲]

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See detailDomain oriented model reduction of signal transduction models
Conzelmann, H.; Saez-Rodriguez, J.; Sauter, T. et al

Poster (2004, October)

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See detailDomain-specific regular acceleration
Boigelot, Bernard ULg

in International Journal on Software Tools for Technology Transfer (2012), 14(2), 193-206

The regular model-checking approach is a set of techniques aimed at exploring symbolically infinite state spaces. These techniques proceed by representing sets of configurations of the system under ... [more ▼]

The regular model-checking approach is a set of techniques aimed at exploring symbolically infinite state spaces. These techniques proceed by representing sets of configurations of the system under analysis by regular languages, and the transition relation between these configurations by a transformation over such languages. The set of reachable configurations can then be computed by repeatedly applying the transition relation, starting from a representation of the initial set of configurations, until a fixed point is reached. In order for this computation to terminate, it is generally needed to introduce so-called acceleration operators, the purpose of which is to explore in one computation step infinitely many paths in the transition graph of the system. A simple form of acceleration operator is one that is associated to a cycle in the transition graph, computing the set of states that can be obtained by following this cycle arbitrarily many times. The computation of acceleration operators is strongly dependent on the type of the data values that are manipulated by the system, and on the symbolic representation chosen for handling sets of such values. In this survey, we describe acceleration operators suited for the regular state-space exploration of systems relying on FIFO communication channels, as well as those based on integer and real variables. [less ▲]

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See detailDomaine boisé du Sart Tilman (ULg) : Valorisation énergétique de la biomasse ligneuse en adéquation avec une gestion multifonctionnelle
Rondeux, Jacques ULg; Schillings, Thomas ULg

Scientific conference (2012, November 06)

During winter 2010-2011, a forest inventory was performed within a part of the forest belonging to the University of Liège (ULg, Belgium) located near Sart Tilman. The aim of this inventory was to ... [more ▼]

During winter 2010-2011, a forest inventory was performed within a part of the forest belonging to the University of Liège (ULg, Belgium) located near Sart Tilman. The aim of this inventory was to quantify the fire-wood which is available for producing wood-chips. The results of the inventory and the production process of wood-chips are detailed. [less ▲]

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See detailLe domaine de chasse de Bombo-Lumene : un espace naturel en péril aux frontières de Kinshasa
Vermeulen, Cédric ULg; Lanata, F.

in Parcs & Réserves (2006), 61(2), 4-8

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See detailLe domaine infra-rouge en spectroscopie astronomique
Swings, Polydore ULg; Migeotte, M.

in Ciel et Terre (1939), 55

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See detailDomaine public, domaine privé, biens des pouvoirs publics
Pâques, Michel ULg

Book published by Larcier (2008)

Detailed reference viewed: 359 (31 ULg)
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See detailLe domaine universitaire de Liège et son patrimoine architectural
Frankignoulle, Pierre ULg

in Compain Gajac, Catherine (Ed.) Les campus universitaires 1945-1975. Architecture et urbanisme. Histoire et sociologie. Etat des lieux et Perspectives (2014)

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See detailLe domaine universitaire du Sart Tilman Propositions d’aménagement de la zone Nord
Prégardien, Michel ULg; Collette, Jean-Pierre ULg

in Les Cahiers de l’Urbanisme (2008), 68

Il est désormais nécessaire de reconsidérer l’organisation du domaine universitaire du Sart Tilman, campus de l’Université de Liège, non seulement en se replaçant dans le contexte de l’époque actuelle ... [more ▼]

Il est désormais nécessaire de reconsidérer l’organisation du domaine universitaire du Sart Tilman, campus de l’Université de Liège, non seulement en se replaçant dans le contexte de l’époque actuelle, mais aussi dans l’optique d’une démarche prospective. Le présent article se concentre sur l’intervention dans la zone Nord, partie la plus peuplée du domaine, point d’entrée de l’université et donc limite stratégique entre la ville et son université. [less ▲]

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See detailLes domaines d'activité du géomètre belge
Billen, Roland ULg

Article for general public (2012)

Detailed reference viewed: 43 (10 ULg)
See detailDomaines de Gospinal & Coquenfange a Sart-lez-Spa : rapport adressé a M. le ministre de l'intérieur
Malaise, Constantin ULg

Book published by Impr. de A. Mertens et fils (1868)

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See detailDomains and maturation processes that regulate the activity of ADAMTS-2, a metalloproteinase cleaving the aminopropeptide of fibrillar procollagens types I-III and V
Colige, Alain ULg; Ruggiero, Florence; Vandenberghe, Isabel et al

in Journal of Biological Chemistry (2005), 280(41), 34397-34408

Processing of fibrillar collagens is required to generate collagen monomers able to self-assemble into elongated and cylindrical collagen fibrils. ADAMTS-2 belongs to the "A disintegrin and ... [more ▼]

Processing of fibrillar collagens is required to generate collagen monomers able to self-assemble into elongated and cylindrical collagen fibrils. ADAMTS-2 belongs to the "A disintegrin and metalloproteinase with thrombospondin type 1 motifs" (ADAMTS) family. It is responsible for most of the processing of the aminopropeptide of type I procollagen in the skin, and it also cleaves type II and type III procollagens. ADAMTS are complex secreted enzymes that are implicated in various physiological and pathological processes. Despite accumulating evidence indicating that their activity is regulated by ancillary domains, additional information is required for a better understanding of the specific function of each domain. We have generated 17 different recombinant forms of bovine ADAMTS-2 and characterized their processing, activity, and cleavage specificity. The results indicated the following: (i) activation of the ADAMTS-2 zymogen involves several cleavages, by proprotein convertases and C-terminal processing, and generates at least seven distinct processed forms; (ii) the C-terminal domain negatively regulates enzyme activity, whereas two thrombospondin type 1 repeats are enhancer regulators; (iii) the 104-kDa form displays the highest aminoprocollagen peptidase activity on procollagen type I; (iv) ADAMTS-2 processes the aminopropeptide of alpha1 type V procollagen homotrimer at the end of the variable domain; and (v) the cleaved sequence (PA) is different from the previously described sites ((P/A)Q) for ADAMTS-2, redefining its cleavage specificity. This finding and the existence of multiple processed forms of ADAMTS-2 strongly suggest that ADAMTS-2 may be involved in function(s) other than processing of fibrillar procollagen types I-III. [less ▲]

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See detailDomestic garden plant diversity in Bujumbura, Burundi: role of the socio-economical status of the neighborhood and alien species invasion risk
Bigirimana, J; Bogaert, Jan ULg; De Cannière, C et al

in Landscape & Urban Planning (2012), 107

Detailed reference viewed: 31 (1 ULg)
See detailDomestic Service and the Emergence of a New Conception of Labour in Europe, Proceedings of the Servant Project. Volume 2
Pasleau, Suzanne ULg; Schopp, Isabellle; Sarti, Raphaella

Book published by Les Editions de l'Université de Liège (2005)

Detailed reference viewed: 26 (1 ULg)