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See detailA relict bank vole lineage highlights the biogeographic history of the Pyrenean region in Europe
Deffontaine Deurbroeck, Valérie ULg; Ledevin, Ronan; Fontaine, Michaël ULg et al

in Molecular Ecology (2009)

The Pyrenean region exhibits high levels of endemism suggesting a major contribution to the phylogeography of European species. But, to date, the role of the Pyrenees and surrounding areas as a glacial ... [more ▼]

The Pyrenean region exhibits high levels of endemism suggesting a major contribution to the phylogeography of European species. But, to date, the role of the Pyrenees and surrounding areas as a glacial refugium for temperate species remains poorly explored. In the current study, we investigated the biogeographic role of the Pyrenean region through the analyses of genetic polymorphism and morphology of a typical forest-dwelling small mammal, the bank vole (Myodes glareolus). Analyses of the mitochondrial cytochrome b gene and the third upper molar (M(3)) show a complex phylogeographic structure in the Pyrenean region with at least three distinct lineages: the Western European, Spanish and Basque lineages. The Basque lineage in the northwestern (NW) Pyrenees was identified as a new clearly differentiated and geographically localized bank vole lineage in Europe. The average M(3) shape of Basque bank voles suggests morphological differentiation but also restricted genetic exchanges with other populations. Our genetic and morphological results as well as palaeo-environmental and fossils records support the hypothesis of a new glacial refugium in Europe situated in the NW Pyrenees. The permissive microclimatic conditions that prevailed for a long time in this region may have allowed the survival of temperate species, including humans. Moreover, local differentiation around the Pyrenees is favoured by the opportunity for populations to track the shift of the vegetation belt in altitude rather than in latitude. The finding of the Basque lineage is in agreement with the high level of endemic taxa reported in the NW Pyrenees. [less ▲]

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See detailNew combinations in the Amblystegiaceae
Vanderpoorten, Alain ULg; Hedenäs, L.

in Journal of Bryology (2009), 31

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See detailBiodiversity of three representative groups of the Antarctic zoobenthos - Coping with change (BIANZO II)
Raes, Maarten; Vanreusel, Ann; Pasotti, Francesca et al

Report (2009)

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See detailContribution to the applied territorial intelligence: reasoned catalog of territorial information available on internet and sources in Europe
Devillet, Guénaël ULg; Breuer, Christophe ULg

in International Conference of Territorial Information. Papers on Tools and Methods of Territorial Intelligence. (2009)

This article gives a report on the territorial collection of information for the local actors in the whole of Europe (EU 27). It deals with various sources available in Europe in a centralized and ... [more ▼]

This article gives a report on the territorial collection of information for the local actors in the whole of Europe (EU 27). It deals with various sources available in Europe in a centralized and decentralized way. An inventory was carried out for indicators selected within the framework of the method CATALYSE of confrontation of the populations needs with the services available to answer it. Various examples of information sources for the territories (“observatories”) are also putted forward. The reasoned catalog treats methods of cartographic representation for the various indicators. It also highlights the variability of the indicators definitions according to the European suppliers, and the difficulties of harmonization and use. [less ▲]

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See detailEmergence of a territory project for the districts of huy and Waremme (Belgium): tools, participation and construction
Breuer, Christophe ULg; Devillet, Guénaël ULg; Merenne-Schoumaker, Bernadette ULg

in International Conference of Territorial Information. Papers on Tools and Methods of Territorial Intelligence. (2009)

The emergence of a territory project built and shared by the actors implies the use of special methods which make it possible to transcend the private interest for the benefit of a territorialized ... [more ▼]

The emergence of a territory project built and shared by the actors implies the use of special methods which make it possible to transcend the private interest for the benefit of a territorialized community good. The example of the territorial project for the districts of Huy and Waremme (Belgium, 2007) makes it possible to put forward useful and diversified methods to cause and frame the debates, while taking into account the number, the representativeness and the diversity of the actors in a strongly diversified territory. It deals with the integration of the territorial observation in a territories development process and in the confrontation of the theoretical and pragmatic approaches. [less ▲]

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See detailD1-like dopamine receptor density in nuclei involved in social behavior correlates with song in a context-dependent fashion in male European starlings.
Heimovics, Sarah A.; Cornil, Charlotte ULg; Ball, Gregory F. et al

in Neuroscience (2009), 159(3), 962-73

Research in songbirds shows that singing behavior is regulated by both brain areas involved in vocal behavior as well as those involved in social behavior. Interestingly, the precise role of these regions ... [more ▼]

Research in songbirds shows that singing behavior is regulated by both brain areas involved in vocal behavior as well as those involved in social behavior. Interestingly, the precise role of these regions in song can vary as a function of the social, environmental and breeding context. To date, little is known about the neurotransmitters underlying such context-dependent regulation of song. Dopamine (DA) modulates highly motivated, goal-directed behaviors (including sexually motivated song) and emerging data implicate DA in the context-dependent regulation of singing behavior. This study was performed to begin to examine whether differences in DA receptors may underlie, in part, context-dependent differences in song production. We used autoradiographic procedures to label D1-like and D2-like DA receptors to examine the relationship between DA receptor density and singing behavior in multiple contexts in male European starlings (Sturnus vulgaris). Within a breeding context (when testosterone (T) was high), D1-like receptor density in the medial preoptic nucleus (POM) and midbrain central gray (GCt) negatively correlated with song used to attract a female. Additionally in this context, D1-like receptor density in POM, GCt, medial bed nucleus of the stria terminalis (BSTm), and lateral septum (LS) negatively correlated with song likely used to defend a nest box. In contrast, in a non-breeding context (when T was low), D1-like receptor density in POM and LS positively correlated with song used to maintain social flocks. No relationships were identified between song in any context and D2-like receptor densities. Differences in the brain regions and directional relationships between D1-like receptor binding and song suggest that dopaminergic systems play a region and context-specific role in song. These data also suggest that individual variation in singing behavior may, in part, be explained by individual differences in D1-like receptor density in brain regions implicated in social behavior. [less ▲]

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See detailTowards a system of territorial intelligence: geographical indicators and data for European actors
Breuer, Christophe ULg; Devillet, Guénaël ULg

in International Conference of Territorial Information. Papers on Tools and Methods of Territorial Intelligence. (2009)

This article deals with the realization of a territorial information gate for the European actors. It defines the sources of territorial information and the files allowing the cartography of the ... [more ▼]

This article deals with the realization of a territorial information gate for the European actors. It defines the sources of territorial information and the files allowing the cartography of the administrative and statistical cuttings. The acquisition cost of information is also putted forward. It establishes the link between the technical realization of an interactive interface of webmapping and the problem of the data and metadata management. [less ▲]

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See detailEvidence-based guidelines for the use of biochemical markers of bone turnover in the selection and monitoring of bisphosphonate treatment in osteoporosis: a consensus document of the Belgian Bone Club.
Bergmann, Pierre; Body, Jean-Jacques; Boonen, Steven et al

in International Journal of Clinical Practice (2009), 63(1), 19-26

OBJECTIVES: To review the clinical value of bone turnover markers (BTM), to initiate and/or monitor anti-resorptive treatment for osteoporosis compared with bone mineral density (BMD) and to evaluate ... [more ▼]

OBJECTIVES: To review the clinical value of bone turnover markers (BTM), to initiate and/or monitor anti-resorptive treatment for osteoporosis compared with bone mineral density (BMD) and to evaluate suitable BTM and changes in BTM levels for significance of treatment efficiency. METHODOLOGY: Consensus meeting generating guidelines for clinical practice after review and discussion of the randomised controlled trials or meta-analyses on the management of osteoporosis in postmenopausal women. RESULTS: Although the correlation between BMD and BTM is statistically significant, BTM cannot be used as predictive markers of BMD in an individual patient. Both are independent predictors of fracture risk, but BTM can only be used as an additional risk factor in the decision to treat. Current data do not support the use of BTM to select the optimal treatment. However, they can be used to monitor treatment efficiency before BMD changes can be evaluated. Early changes in BTM can be used to measure the clinical efficacy of an anti-resorptive treatment and to reinforce patient compliance. DISCUSSION: Determining a threshold of BTM reflecting an optimal long-term effect is not obvious. The objective should be the return to the premenopausal range and/or a decrease at least equal to the least significant change (30%). Preanalytical and analytical variability of BTM is an important limitation to their use. Serum C-terminal cross-linked telopeptide of type I collagen (CTX), procollagen 1 N terminal extension peptide and bone specific alkaline phosphatase (BSALP) appear to be the most suitable. Conclusion: Consensus regarding the use of BTM resulted in guidelines for clinical practice. BMD determines the indication to treat osteoporosis. BTM reflect treatment efficiency and can be used to motivate patients to persist with their medication. [less ▲]

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See detailCompte rendu bibliographique
Salzburger, Romain ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2009)

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See detailTerritorial information, shapefiles and indicators accessibles for actors until commune and infra communal levels
Breuer, Christophe ULg; Devillet, Guénaël ULg

in Papers on Tools and Methodes of Territorial Information (2009)

This article presents the carried out researches within the framework of the creation of an indicators gate for the local actors. We evaluate in this one the accessible territorial data for the actors ... [more ▼]

This article presents the carried out researches within the framework of the creation of an indicators gate for the local actors. We evaluate in this one the accessible territorial data for the actors, and the cartographic files of the administrative or statistical entities to represent them. We analyze the sources of information, and determine its accessibility in the various countries of the European Union. We moreover deal with problems of the relevant territorial scales and cartographic representation of the data. [less ▲]

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See detailInfra-local level : accessibility and management of territorial information
Breuer, Christophe ULg; Devillet, Guénaël ULg

(2009)

This article deals with socio-economic and geographical data available for the local actors of the infra-communal level. The statistical data and cuttings are analyzed.

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See detailQuantitative Characterization of Pore Corrugation in Ordered Mesoporous Materials Using Image Analysis of Electron Tomograms
Gommes, Cédric ULg; Friedrich, Heiner; Wolters, Mariska et al

in Chemistry of Materials (2009), 21

Electron tomography and image analysis are combined to characterize ordered mesoporous silica SBA-15. The morphology of the mesopores with average diameter 6 nm is analyzed in terms of cylinders having ... [more ▼]

Electron tomography and image analysis are combined to characterize ordered mesoporous silica SBA-15. The morphology of the mesopores with average diameter 6 nm is analyzed in terms of cylinders having variable radii and centers that are statistically centered on the points of a distorted hexagonal lattice. The variations in the mesopore centers and radii add up and result in pore wall corrugation with amplitude of 1.6 nm. The correlation length of the corrugation along the pore axis was found to be 4-5 nm. The amplitude of the corrugation compared well with the 1.9 nm thick microporous corona obtained from X-ray diffraction (XRD). In general, the present approach provides a detailed microscopic 3D model of nanostructured materials that complements macroscopic measurements such as physisorption and XRD. [less ▲]

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See detailComputer-aided integrated design for machines with varying dynamics
da Silva, Maira M; Bruls, Olivier ULg; Swevers, Jan et al

in Mechanism & Machine Theory (2009), 44(9), 1733-1745

This paper discusses the integrated design of mechatronic systems with varying dynamics, such as serial and parallel machine tools. This characteristic affects the machine stability and performance. A ... [more ▼]

This paper discusses the integrated design of mechatronic systems with varying dynamics, such as serial and parallel machine tools. This characteristic affects the machine stability and performance. A computer-aided integrated design methodology is proposed and validated on a pick-and-place robot. It consists of two main steps: (i) the derivation of reduced models from a flexible multibody model and (ii) the systematic robust control design. Eventually, the integrated design of the system, considering both structural and control parameters, can be performed. [less ▲]

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See detailA diagnostic m-test for distributional specification of parametric conditional heteroscedasticity models for financial data
Lejeune, Bernard ULg

in Journal of Empirical Finance (2009), 16(3), 507-523

This paper proposes a convenient and generally applicable diagnostic m-test for checking the distributional specification of parametric conditional heteroscedasticity models for financial data such as the ... [more ▼]

This paper proposes a convenient and generally applicable diagnostic m-test for checking the distributional specification of parametric conditional heteroscedasticity models for financial data such as the customary Student t GARCH model. The proposed test is based on the moments of the probability integral transform of the innovations of the assumed model. Monte-Carlo evidence indicates that our test performs well both in terms of size and power. An empirical example illustrates the practical usefulness of the test and some of its possible extensions are outlined. [less ▲]

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See detailLarge ring 1,3-bridged 2-azetidinones: experimental and theoretical studies
Urbach, Allan; Dive, Georges ULg; Tinant, Bernard et al

in European Journal of Medicinal Chemistry (2009), 44

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See detailHistopathological diagnosis of a type vii mucopolysaccharidosis after pregnancy termination.
Delbecque, Katty ULg; Gaillez, Stephanie ULg; Schaaps, Jean-Pierre ULg

in Fetal & Pediatric Pathology (2009), 28(1), 1-8

Type VII mucopolysaccharidosis is a very rare recessive lysosomal storage disease. We diagnosed a type VII MPS in a case of severe fetal hydrops after pregnancy termination at 23 weeks of gestation. The ... [more ▼]

Type VII mucopolysaccharidosis is a very rare recessive lysosomal storage disease. We diagnosed a type VII MPS in a case of severe fetal hydrops after pregnancy termination at 23 weeks of gestation. The diagnosis was suspected on histopathological examination by the presence of foam cells in many viscera and foamy placental Hofbauer cells. Enzyme assay on cultured amniotic cells showed a markedly deficient beta-glucuronidase activity, thus confirming the diagnosis. This report shows the importance of a precise necropsy diagnosis in nonimmune hydrops because of putative implications for genetic counseling and prenatal diagnosis in subsequent pregnancies. [less ▲]

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See detailLa fin de la récréation pour l'opérateur historique? Annotation de la décision du Conseil de la concurrence dans l'affaire Belgacom/Scarlet, 7 novembre 2008
Petit, Nicolas ULg; Daems, Ief

in revue de la concurrence belge (2009), (3),

Le Conseil belge de la concurrence a décidé de subordonner l'autorisation de la concentration entre Belgacom et Scarlet à la mise en oeuvre de diverses mesures correctives structurelles et ... [more ▼]

Le Conseil belge de la concurrence a décidé de subordonner l'autorisation de la concentration entre Belgacom et Scarlet à la mise en oeuvre de diverses mesures correctives structurelles et comportementales. [less ▲]

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See detailUnemployment and retirement in a model with age-specific heterogeneity
Lefebvre, Mathieu ULg

E-print/Working paper (2009)

This paper presents a model where young and old workers compete for one type of jobs in the presence of retirement opportunity. Within this framework, we show that increased retirement opportunities (such ... [more ▼]

This paper presents a model where young and old workers compete for one type of jobs in the presence of retirement opportunity. Within this framework, we show that increased retirement opportunities (such as early retirement) has most of the time a depressing impact on the unemployment rate. Indeed the number of vacancies posted by firms is influenced by the probability that an old worker is going into retirement. We show that the degree to which younger workers are influenced by retirement of older workers depends on the relative productivity of young and older workers. It is only when older workers are much more productive than young workers that retirement may benefi t to unemployment. [less ▲]

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See detailMagnetically controlled superconducting weak links
Van de Vondel, J.; Silhanek, Alejandro ULg; Raes, B. et al

in Applied Physics Letters (2009), 95(3),

We have designed and characterized a magnetic template which can be switched between chains of parallel and antiparallel field distribution by applying an in-plane magnetic field. The parallel field ... [more ▼]

We have designed and characterized a magnetic template which can be switched between chains of parallel and antiparallel field distribution by applying an in-plane magnetic field. The parallel field profile creates highly mobile vortex channels in a superconducting film deposited on top, reproducing the behavior of a weak link as evidenced by the presence of Shapiro steps in the current-voltage characteristics under rf excitation. The Josephson coupling can be fully suppressed by changing the field distribution to the antiparallel state. As a result, a reversible ON/OFF switch for magnetically induced weak links has been demonstrated. [less ▲]

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