References of "2006"
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See detailRépartition et écologie des reptiles sur le réseau ferroviaire en Wallonie
Graitson, Eric ULg

in Bulletin de la Société Herpétologique de France (2006), 120

In Wallonia, railways constitute valuable habitats for reptile conservation. All autochthonous species have colonized these man-made habitats, but their presence and abundance largely vary among the ... [more ▼]

In Wallonia, railways constitute valuable habitats for reptile conservation. All autochthonous species have colonized these man-made habitats, but their presence and abundance largely vary among the natural regions and the kinds of railways. Reptiles are more frequent along railways with remaining rails than along dismounted unused ways, which represents one half of the network. Although representing only a small part of the network, the unused railways not dismounted are particularly rich in reptiles. This is also the case of some active lines in sunny areas of large valleys and in some large switchyards. Anguis fragilis is the most widespread species on the Walloon railways, but P o d a rcis muralisis the most abundant. In Wallonia, railways seemed to have contributed to the local, more rarely regional, dispersion of at least five species of reptiles: Anguis fragilis, Lacerta agilis, Podarcis muralis, Zootoca viviparaa and Coronella austriaca. Some of these species – specifically Podarcis muralis– have most probably colonized new regions through unexpected transportation by merchandise cars. Finally, reptile populations inhabiting the Walloon railways face several threads. [less ▲]

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See detailSpotlight on nail histomycology.
Pierard, Gérald ULg; Quatresooz, Pascale ULg; Arrese Estrada, Jorge ULg

in Dermatologic Clinics (2006), 24(3), 371-4

The misdiagnosis of onychomycosis delays the proper treatment of the nail condition. Nail histomycology refers to the microscopic examination of histologic sections prepared from nail clippings for the ... [more ▼]

The misdiagnosis of onychomycosis delays the proper treatment of the nail condition. Nail histomycology refers to the microscopic examination of histologic sections prepared from nail clippings for the purpose of detecting the presence of fungi. This laboratory method is the most sensitive procedure for the diagnosis of onychomycosis. It allows for the visualization of the precise location of the invasive fungus inside the nail apparatus. The method also distinguishes various shapes of the fungal cells, in particular filamentous fungi, yeasts, conidia, and sporodochia. The correct diagnosis provided by histomycology combined with culture not only allows for more efficient expenditure of funds and services but also is important for the timely alleviation of the disorder. [less ▲]

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See detailDiscrimination of shifts in a soil microbial community assosciated with TNT-contamination using a functional ANOVA of 16S rRNA hybridized to oligonucleotide microarrays
Eyers; Smoot, J. C.; Smoot, L. M. et al

in Environmental Science & Technology (2006), 40

A functional ANOVA analysis of the thermal dissociation of RNA hybridized to DNA microarrays was used to improve discrimination between two soil microbial communities. Following hybridization of in vitro ... [more ▼]

A functional ANOVA analysis of the thermal dissociation of RNA hybridized to DNA microarrays was used to improve discrimination between two soil microbial communities. Following hybridization of in vitro transcribed 16S rRNA derived from uncontaminated and 2,4,6- trinitrotoluene contaminated soils to an oligonucleotide microarray containing group- and species-specific perfect match (PM) probes and mismatch (MM) variants, thermal dissociation was used to analyze the nucleic acid bound to each PM-MM probe set. Functional ANOVA of the dissociation curves generally discriminated PM-MM probe sets when Td values (temperature at 50% probe-target dissociation) could not. Maximum discrimination for many PM and MM probes often occurred at temperatures greater than theTd. Comparison of signal intensities measured prior to dissociation analysis from hybridizations of the two soil samples revealed significant differences in domain-, group-, and species-specific probes. Functional ANOVA showed significantly different dissociation curves for 11 PM probes when hybridizations from the two soil samples were compared, even though initial signal intensities for 3 of the 11 did not vary. [less ▲]

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See detailCutaneous myospherulosis and membranous lipodystrophy: extensive presentation in a patient with severe steroid-induced dermal atrophy.
Flagothier, Caroline ULg; Pierard, Gérald ULg; Quatresooz, Pascale ULg

in Journal of the European Academy of Dermatology & Venereology (2006), 20(4), 457-60

Myospherulosis is a rare disorder that may develop in various organs including the skin. It is characterized by a typical histological presentation resulting from the interaction between erythrocytes and ... [more ▼]

Myospherulosis is a rare disorder that may develop in various organs including the skin. It is characterized by a typical histological presentation resulting from the interaction between erythrocytes and lipids. We present a case of cutaneous myospherulosis associated with membranous lipodystrophy. The lesions were supervening on severe steroid-induced skin atrophy upon which ointments had been applied. [less ▲]

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See detailOrigine biogénétique des triterpènes pentacycliques présents dans la sécrétion défensive de Platyphora Kollari (Chrysomelidae)
Ghostin, Jean; Laurent, Pascal ULg; Daloze, Désiré et al

Poster (2006)

Les chrysomèles sont des insectes phytophages brillement colorés qui représentent une des famille (Chrysomelidae) les plus importante de l'ordre des coléoptères. Etant aposématiques, ils sont facilement ... [more ▼]

Les chrysomèles sont des insectes phytophages brillement colorés qui représentent une des famille (Chrysomelidae) les plus importante de l'ordre des coléoptères. Etant aposématiques, ils sont facilement repérables par des prédateurs potentiels et ont, au cours de l'évolution, développé des mécanismes de défense chimique élaborés. La découverte de glycosides triterpéniques basés sur le squelette oléanane a soulevé le problème de leur origine biogénétique. En effet, il est bien connu que les insectes ne possèdent pas la squalène synthase, une enzyme indispensable à la formation des stéroïdes et des triterpènes pentacycliques. Dès lors, une biosynthèse de novo de ce type de dérivé est peu probable. Par ailleurs, l'analyse de la plante hôte des chrysomèles a montré que la séquestration des glycosides au départ de cette plante est également exclue. Une troisième possibilité serait que l'insecte utilise un précurseur provenant de son alimentation pour fabriquer ses substances défensives. Un tel précurseur pourrait être la b-amyrine identifiée chez différentes plantes hôtes des chrysomèles ou l'acide oléanolique dont la structure de base se retrouve au niveau des triterpènes défensifs. Enfin, l'analyse des plantes hôtes a montré que celles-ci contiennent à la fois de la b-amyrine et de l'a-amyrine dans un rapport 1,76/1. Cependant aucun glycoside triterpénique basé sur le squelette ursane n'a été isolé jusqu'à présent chez les chrysomèles, ce qui suggère un mécanisme de transport sélectif en faveur de la b-amyrine. Dans le cadre de ce travail, nous présenterons les synthèses d'a-amyrine, de b-amyrine et d'acide oéanolique trideutériés, ainsi que les résultats d'incorporation des deux premiers précurseurs chez Platyphora kollari. [less ▲]

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See detailSolid-state NMR study of modified clay and polymer/clay nanocomposites
Grandjean, Jean ULg

in Clay Minerals (2006), 41

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See detail60 h of anhepatic state without neurologic deficit
Detry, Olivier ULg; De Roover, Arnaud ULg; Delwaide, Jean ULg et al

in Transplant International (2006), 19(9), 769-769

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See detailCorrelation of Experimental and Numerical Results on Electrostatically Actuated Micro-Beams
Rochus, Véronique ULg; Rixen, Daniel; Golinval, Jean-Claude ULg

in Technical Proceedings of the 2006 NSTI Nanotechnology Conference and Trade Show (2006), 3

The aim of this paper is to validate numerical simula- tions of electromechanical coupling in micro-structures using some experimental results. The micro-structures studied here consist in a micro-bridge ... [more ▼]

The aim of this paper is to validate numerical simula- tions of electromechanical coupling in micro-structures using some experimental results. The micro-structures studied here consist in a micro-bridge and two cantilever micro-beams. Multi-physics models of micro-electro- mechanical systems (MEMS) based on the ¯nite ele- ment method (FEM) are used to model the strongly coupled electro-mechanical interactions and to perform static analyses taking into account large displacements. In all the cases treated here the numerical results are in very good agreement with the experimental results. [less ▲]

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See detailEffects of a single injection of a progesterone receptor antagonist during the third month of gestation in sheep
Taverne, M. A. M.; Regeling, J. I.; Sulon, Joseph ULg et al

in Reproduction in Domestic Animals (2006), 41(4), 310

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See detailLa chronologie de Biryuchya Balka (Région de Rostov, Russie)
Otte, Marcel ULg; Matyukhin, Alexander; Flas, Damien ULg

in Rannyaya pora verkhnego Paleolita evrazii: obtcheié i lokalnoié (2006)

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See detailL'émission trading à la Cour d'arbitrage, Commentaire de C.A., 92/2006
Pâques, Michel ULg

in Aménagement - Environnement (2006), 4

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See detailThe Critical Neighbourhood Range for Asymptotic Overlay Connectivity in Ad Hoc Networks
Calomme, Sandrine; Leduc, Guy ULg

in Ad Hoc & Sensor Wireless Networks (2006), 2(2), 169-187

We first motivate the use of ad hoc overlays. In particular, we argue that overlay routing could play a role in the spreading of ad hoc networks. We then define a simple criterion for neighbourhood: two ... [more ▼]

We first motivate the use of ad hoc overlays. In particular, we argue that overlay routing could play a role in the spreading of ad hoc networks. We then define a simple criterion for neighbourhood: two overlay nodes are neighbours if and only if there exists a path between them of at most R hops, and R is called the (overlay) neighbourhood range. A small R may result in a disconnected overlay, while an unnecessarily large R would generate extra control traffic. We are interested in the minimum R ensuring overlay connectivity, the so-called critical R. We study conditions on R to achieve asymptotic connectivity of the overlay almost surely, i.e. connectivity with probability 1 when the number of nodes in the underlying ad hoc network tends to infinity (so-called dense networks) or when the size of the field tends to infinity (socalled sparse networks), under the hypothesis that the underlying ad hoc network is itself asymptotically almost surely connected. For dense networks, we derive a necessary and sufficient condition on R, and for sparse networks we derive distinct necessary and sufficient conditions that are however asymptotically tight. These conditions, though asymptotic, shed some light on the relation linking the critical R to the number of nodes n, the field size the radio transmission range r and the overlay density D (i.e., the proportion of overlay nodes). These conditions can be considered as approximations when the number of nodes (resp. the field) is large enough. Since r is considered as a function of n or l , we are able to study the impact of topology control mechanisms, by showing how the shape of this function impacts the critical R. [less ▲]

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See detailEffect of sampling method and culture conditions on the result of fungal culture in the diagnosis of canine sino-nasal aspergillosis.
Legarrérès, A.; Clercx, Cécile ULg; Mignon, Bernard ULg et al

in Proceedings of the 24th VCRS meeting (2006)

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See detailThe left intraparietal sulcus and verbal short-term memory: Focus of attention or serial order ?
Majerus, Steve ULg; Poncelet, Martine ULg; Van der Linden, Martial ULg et al

in Neuroimage (2006), 32(2), 880-891

One of the most consistently activated regions during verbal short-term memory (STM) tasks is the left intraparietal sulcus (IPS). However, its precise role remains a matter of debate. While some authors ... [more ▼]

One of the most consistently activated regions during verbal short-term memory (STM) tasks is the left intraparietal sulcus (IPS). However, its precise role remains a matter of debate. While some authors consider the IPS to be a specific store for serial order information, other data suggest that it serves a more general function of attentional focalization. In the current fMRI experiment, we investigated these two hypotheses by presenting different verbal STM conditions that probed recognition for word identity or word order and by assessing functional connectivity of the left IPS with distant brain areas. If the IPS has a role of attentional focalization, then it should be involved in both order and item conditions, but it should be connected to different brain regions, depending on the neural substrates involved in processing the different types of information (order versus phonological/orthographic) to be remembered in the item and order STM conditions. We observed that the left IPS was activated in both order and item STM conditions but for different reasons: during order STM, the left IPS was functionally connected to serial/temporal order processing areas in the right IPS, premotor and cerebellar cortices, while during item STM, the left IPS was connected to phonological and orthographic processing areas in the superior temporal and fusiform gyri. Our data support a position considering that the left IPS acts as an attentional modulator of distant neural networks which themselves are specialized in processing order or language representations. More generally, they strengthen attention-based accounts of verbal STM. [less ▲]

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See detailDie Zikadenmetapher in Ingeborg Bachmanns Die Zikaden: Lebensflucht und Lebensmut
Vanhaegendoren, Koen ULg

in Seminar : a Journal of Germanic Studies (2006), 42(2), 135-154

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See detailInter- and intra-guild interactions related to aphids in nettle (Urtica dioica L.) strips closed to field crops.
Alhmedi, A.; Haubruge, Eric ULg; Bodson, Bernard ULg et al

in Communications in Agricultural and Applied Biological Sciences (2006), 71(2 Pt B), 413-23

A field experiment designed to assess the biodiversity related to nettle strips closed to crops, and more particularly the aphid and related beneficial populations, was established in experimental farm ... [more ▼]

A field experiment designed to assess the biodiversity related to nettle strips closed to crops, and more particularly the aphid and related beneficial populations, was established in experimental farm located in Gembloux (Belgium). Margin strips of nettle (Urtica dioica) closed to wheat (Triticum aestivum), green pea (Pisum sativum) and rape (Brassicae napus) fields were investigated. The diversity, abundance of aphids and related predators were analysed according to the plant crop species and the differential pesticide application (treated plot and control). Insects were visually observed every week during all the cultivation season. Two main families of aphidophagous predators were found in all field crops and nettle, the Coccinellidae and Syrphidae. The diversity of the aphidophagous predators was shown to be higher on nettle than in field crops, particularly the Chrysopidae, the Anthocoridae and the Miridae. However, a striking difference of ladybird abundance was observed according to the aphid host plant. In one side, Coccinella septempunctata was much more abundant on Acyrthosiphon pisum infested green pea than on the other host plant species. At the opposite, higher occurrence of Harmonia axyridis was observed on the aphid infested nettle plants than on the crop plants. In particular, none of H. axyridis was found in wheat crop. Also, more than only a significant positive correlation between predator and aphid abundance, specialised relations between particular aphid species and some so-called generalist predators was determined in the fields. Finally, intraguild interactions between the aphidophagous predators was assessed and shown that only a significant negative correlation between Episyrphus balteatus and H. axyridis related to the nettle aphid, Micrlophium carnosum, was observed. The relative distribution of the ladybirds, namely C. septempunctata and H. axyridis according to the host plant, nettle strips and crop plots was discussed in relation to integrated pest management approach. [less ▲]

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See detailMise à forme des matériaux - Première partie
Debongnie, Jean-François ULg

Learning material (2006)

Introduction. Irons metallurgy and alloys classifications (DIN, AFNOR, SAE). Casting practice. Forging. Sheet-metal working. Welding, soldering and oxygen cutting. Polder metallurgy. Unconventional ... [more ▼]

Introduction. Irons metallurgy and alloys classifications (DIN, AFNOR, SAE). Casting practice. Forging. Sheet-metal working. Welding, soldering and oxygen cutting. Polder metallurgy. Unconventional machining processes. [less ▲]

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