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See detailWildlife conservation at Madagascar - A global overview
Wilmet, Leslie ULg; Vermeulen, Cédric ULg; Beudels Jamar, Roseline C.

Scientific conference (2015, October 13)

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See detailA lysine cluster in domain II of Bacillus subtilis PBP4a plays a role in the membrane attachment of this C1-PBP
Vanden Broeck, Arnaud; Van Der Heiden, Edwige ULg; Sauvage, Eric ULg et al

in PLoS ONE (2015)

In PBP4a, a Bacillus subtilis class-C1 penicillin-binding protein (PBP), four clustered lysine (K) residues, K86, K114, K119, and K265, protrude from domain II. Replacement of these amino acids with ... [more ▼]

In PBP4a, a Bacillus subtilis class-C1 penicillin-binding protein (PBP), four clustered lysine (K) residues, K86, K114, K119, and K265, protrude from domain II. Replacement of these amino acids with glutamine (Q) residues by site-directed mutagenesis yielded Mut4KQ PBP4a. When produced in Escherichia coli without its predicted Sec-signal peptide, wildtype (WT) PBP4a was found mainly associated with the host cytoplasmic membrane, whereas Mut4KQ PBP4a remained largely unbound. After purification, the capacities of the two proteins to bind to B. subtilis membranes were compared. The results were similar to those obtained in E. coli: in vitro, a much higher percentage of WT PBP4a than of Mut4KQ PBP4a was found to interact with B. subtilis membranes. Immunodetection of PBP4a in B. subtilis membrane extracts revealed that a processed form of this PBP (as indicated by its size) associates with the B. subtilis cytoplasmic membrane. In the absence of any amphiphilic peptide in PBP4a, the crown of positive charges on the surface of domain II is likely responsible for the cellular localization of this PBP and its attachment to the cytoplasmic membrane. [less ▲]

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See detailWiMUAS: New inventory method to perform wildlife counts with UAS and review the large datasets
Linchant, Julie ULg; Lhoest, Simon ULg; Semeki, Jean et al

Conference (2015, October 13)

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See detailPopulation density evaluation of Lepilemur mittermeieri in the Northwest Madagascar - Ampasindava peninsula
Commans, Morgane; Wilmet, Leslie ULg; Vermeulen, Cédric ULg

Scientific conference (2015, October 13)

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See detailCaractérisation géologique et mécanique d'une paroi rocheuse à Wegnez en vue de son excavation et de sa stabilisation
Delvoie, Simon ULg; Bertrand, François ULg; Collin, Frédéric ULg

Report (2015)

La caractérisation détaillée du massif rocheux a été réalisée à partir de mesures in situ et en laboratoire. Ces données sont ensuite utilisées dans l'analyse de stabilité du massif rocheux (stabilité d ... [more ▼]

La caractérisation détaillée du massif rocheux a été réalisée à partir de mesures in situ et en laboratoire. Ces données sont ensuite utilisées dans l'analyse de stabilité du massif rocheux (stabilité d'ensemble et stabilité de blocs selon un joint de discontinuité). L'étude présente également une analyse en vue d'estimer la ou les techniques d'excavation adéquates. [less ▲]

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See detailCulture dans l'agenda post-2015: l'anatomie d'une mobilisation internationale
Vlassis, Antonios ULg

Scientific conference (2015, October 13)

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See detailTracks as a non-invasive tool for monitoring large carnivores
Authelet, Manon ULg; Vermeulen, Cédric ULg

Conference (2015, October 13)

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See detailAutour de L'Année dernière à Marienbad
Lorent, Fanny ULg

Conference given outside the academic context (2015)

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See detailEfficiency of shaft sealing for CO2 sequestration in coal mines
Bertrand, François ULg; Charlier, Robert ULg; Collin, Frédéric ULg et al

in International Workshop on Geomechanics and Energy: The Ground as Energy Source and Storage (2015, October 13)

This work examined the efficiency of a shaft sealing system for the CO2 sequestration in abandoned coal mines. The particular case of the coal mine of Anderlues was considered. The performed simulation ... [more ▼]

This work examined the efficiency of a shaft sealing system for the CO2 sequestration in abandoned coal mines. The particular case of the coal mine of Anderlues was considered. The performed simulation took into account the anisotropic behaviour of shale and the presence of coalbeds. [less ▲]

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See detailL'enseignant face à la théorie du complot
Jamin, Jérôme ULg

Scientific conference (2015, October 13)

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See detailEpithelial-to-mesenchymal transition (EMT)-regulated soluble factors mediate tumor angiogenesis and myeloid cell recruitment
Suarez-Carmona, M; Bourcy, M; Lesage, J et al

Conference (2015, October 13)

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See detailControl of CXCL8/IL-8 expression by ZO-1:
Lesage, J; Suarez-Carmona, M; Grelet, S et al

Poster (2015, October 12)

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See detailData Product Specification Proposal for Architectural Heritage Documentation with Photogrammetric Techniques: A Case Study in Brazil
Campos, Mariana; Tommaselli, Antonio; Ivanova, Ivana et al

in Remote Sensing (2015), 7(10), 13337-13363

Photogrammetric documentation can provide a sound database for the needs of architectural heritage preservation. However, the major part of photogrammetric documentation production is not used for ... [more ▼]

Photogrammetric documentation can provide a sound database for the needs of architectural heritage preservation. However, the major part of photogrammetric documentation production is not used for subsequent architectural heritage projects, due to lack of knowledge of photogrammetric documentation accuracy. In addition, there are only a few studies with rigorous analysis of the requirements for photogrammetric documentation of architectural heritage. In particular, requirements focusing on the geometry of the models generated by fully digital photogrammetric processes are missing. Considering these needs, this paper presents a procedure for architectural heritage documentation with photogrammetric techniques based on a previous review of existing standards of architectural heritage documentation. The data product specification proposed was elaborated conforming to ISO 19131 recommendations. We present the procedure with two case studies in the context of Brazilian architectural heritage documentation. Quality analysis of the produced models were performed considering ISO 19157 elements, such as positional accuracy, logical consistency and completeness, meeting the requirements. Our results confirm that the proposed requirements for photogrammetric documentation are viable. [less ▲]

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See detailUne histoire politique de l'Allemagne de la fin du 19e siècle à nos jours
Brüll, Christoph ULg

Conference given outside the academic context (2015)

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See detailStéréotypes et préjugés : une réalité scolaire ?
Grandjean, Geoffrey ULg

Conference given outside the academic context (2015)

Detailed reference viewed: 27 (4 ULg)
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See detailPhotométrie de haute précision dans l'infrarouge d'exoplanètes en transit
Lanotte, Audrey ULg

Doctoral thesis (2015)

The exploration of new lands has always been and is still an appealing quest of the Mankind. Today, these new worlds we are talking about are several light years away from us, and are called exoplanets ... [more ▼]

The exploration of new lands has always been and is still an appealing quest of the Mankind. Today, these new worlds we are talking about are several light years away from us, and are called exoplanets. Recently discovered, it is possible to study their structures, as well as their atmospheric compositions and properties, without the need to resolve their light from their host star. This is indeed possible when a planet regularly pass in front (transit) or behind (occultation) its host star from our point of view. The study of exoplanets and of their atmosphere is of prime importance. It could inform us on present conditions during their formation and evolution, and thus help us to characterise planets in our own Solar system. The characterisation of the orbital and atmospheric properties of transiting exoplanets is among the main goal of this thesis. We use observations in the infrared band, wherein exoplanet spectra present many atmospheric molecular transition features. However several infrared instrument systematics, particularly those on-board the Spitzer telescope (3.6–24 μm), have already led to divergent conclusions on the nature of planetary atmospheres it targeted, depending on the way these systematics were treated. Hence this thesis focuses on the high-precision infrared data reduction and analysis of transiting exoplanets. Our goal is to obtain accurate and non-ambiguous measurements for the characterisation of exoplanets through the recombination of their emission and transmission spectra. Meanwhile, we attempt to better understand the behaviour of infrared detectors in preparation for future missions in this wavelength range, such as the James Webb Space Telescope. This work is organised around the characterisation of the GJ 436 planetary system based on the data reduction and reanalysis of Spitzer observations and of CoRoT-2 with the help of ground-based and Spitzer observations. We use and optimise the partial deconvolution photometry program DECPHOT, fully appropriate to separate the stellar flux contributions from each other and from that of the sky, which is particularly important in the infrared. Besides, we improve aperture photometry. Then we use the Markov chain Monte Carlo algorithm developed by the Liège team to analyse the light curves produced by these two measurement techniques, in addition to radial velocity measurements that were also available for these systems. We introduce new features, including a mo- delisation of one of the Spitzer systematics, and a phase curve model adapted to eccentric planetary orbit. Our GJ 436b analysis rules out the presence of the two planetary companion candidates proposed recently in the literature. Contrary to former studies that were in disagreement, we measure an occultation depth at 3.6 μm that is independent of the light curve reduction, thanks to our modelisation of the intrapixel effect. We point out a weak stellar activity of its host star and suggest a metal rich atmosphere. Our CoRoT-2 b study leads to a very high emission measurement at 2.09 μm, which highlights an atmosphere in chemical and/or local thermodynamical disequilibrium. It may indicate the emission of H+3 , which results from high extreme UV stellar radiation or planetary aurora emission. [less ▲]

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See detailAnalysis and comparison of different modeling approaches for the simulation of a micro-scale organic Rankine cycle power plant
Dickes, Rémi ULg; Dumont, Olivier ULg; Legros, Arnaud ULg et al

Conference (2015, October 12)

When simulating a system based on the organic Rankine cycle (ORC), different modeling methods can be used to predict its performance. Each method is characterized by advantages, limitations and a level of ... [more ▼]

When simulating a system based on the organic Rankine cycle (ORC), different modeling methods can be used to predict its performance. Each method is characterized by advantages, limitations and a level of complexity. This contribution aims to assess the impact of the modeling approach on the performance prediction of ORC systems. To this end, a 2.8 kWe ORC unit is investigated as case study. In this paper, the components of the test bench are modeled using different approaches of increasing complexity and each model is calibrated using experimental data from the test rig. The goodness of fit as well as the benefits and limitations of each modeling methods are analyzed and discussed. [less ▲]

Detailed reference viewed: 106 (21 ULg)