References of "Scientific journals"      in Complete repository Arts & humanities   Archaeology   Art & art history   Classical & oriental studies   History   Languages & linguistics   Literature   Performing arts   Philosophy & ethics   Religion & theology   Multidisciplinary, general & others Business & economic sciences   Accounting & auditing   Production, distribution & supply chain management   Finance   General management & organizational theory   Human resources management   Management information systems   Marketing   Strategy & innovation   Quantitative methods in economics & management   General economics & history of economic thought   International economics   Macroeconomics & monetary economics   Microeconomics   Economic systems & public economics   Social economics   Special economic topics (health, labor, transportation…)   Multidisciplinary, general & others Engineering, computing & technology   Aerospace & aeronautics engineering   Architecture   Chemical engineering   Civil engineering   Computer science   Electrical & electronics engineering   Energy   Geological, petroleum & mining engineering   Materials science & engineering   Mechanical engineering   Multidisciplinary, general & others Human health sciences   Alternative medicine   Anesthesia & intensive care   Cardiovascular & respiratory systems   Dentistry & oral medicine   Dermatology   Endocrinology, metabolism & nutrition   Forensic medicine   Gastroenterology & hepatology   General & internal medicine   Geriatrics   Hematology   Immunology & infectious disease   Laboratory medicine & medical technology   Neurology   Oncology   Ophthalmology   Orthopedics, rehabilitation & sports medicine   Otolaryngology   Pediatrics   Pharmacy, pharmacology & toxicology   Psychiatry   Public health, health care sciences & services   Radiology, nuclear medicine & imaging   Reproductive medicine (gynecology, andrology, obstetrics)   Rheumatology   Surgery   Urology & nephrology   Multidisciplinary, general & others Law, criminology & political science   Civil law   Criminal law & procedure   Criminology   Economic & commercial law   European & international law   Judicial law   Metalaw, Roman law, history of law & comparative law   Political science, public administration & international relations   Public law   Social law   Tax law   Multidisciplinary, general & others Life sciences   Agriculture & agronomy   Anatomy (cytology, histology, embryology...) & physiology   Animal production & animal husbandry   Aquatic sciences & oceanology   Biochemistry, biophysics & molecular biology   Biotechnology   Entomology & pest control   Environmental sciences & ecology   Food science   Genetics & genetic processes   Microbiology   Phytobiology (plant sciences, forestry, mycology...)   Veterinary medicine & animal health   Zoology   Multidisciplinary, general & others Physical, chemical, mathematical & earth Sciences   Chemistry   Earth sciences & physical geography   Mathematics   Physics   Space science, astronomy & astrophysics   Multidisciplinary, general & others Social & behavioral sciences, psychology   Animal psychology, ethology & psychobiology   Anthropology   Communication & mass media   Education & instruction   Human geography & demography   Library & information sciences   Neurosciences & behavior   Regional & inter-regional studies   Social work & social policy   Sociology & social sciences   Social, industrial & organizational psychology   Theoretical & cognitive psychology   Treatment & clinical psychology   Multidisciplinary, general & others     Showing results 601 to 700 of 44502     2 3 4 5 6 7 8 9 10 11 12     Lignin extraction from Mediterranean agro-wastes: Impact of pretreatment conditions on lignin chemical structure and thermal degradation behaviorManara, Panagiota; Zabaniotou, Anastasia; Vanderghem, Caroline et alin Catalysis Today (2014), 223Three different types of Mediterranean, agro-industrial wastes (olive kernels, grape pomace/seeds, peach kernels), were subjected to two pretreatment processes, a chemical/organosolv and a physicochemical ... [more ▼]Three different types of Mediterranean, agro-industrial wastes (olive kernels, grape pomace/seeds, peach kernels), were subjected to two pretreatment processes, a chemical/organosolv and a physicochemical one. The organosolv process included lignocellulosic biomass treatment with formic acid/acetic acid/water (30/50/20, v/v%), for 3 h at 107 °C, while the physicochemical method was conducted by immersing the biomass in a water/ethanol (8/92, v/v%), H2SO4 0.32 M, solvent and further exposing the slurry to microwave irradiation (maximum 250 W) for 1/2 h at 150 °C. Both processes were evaluated regarding the achieved delignification and the purity of the extracted lignins. The effect of the pretreatment processes onto the structure and thermal decomposition behavior of the extracted lignins was investigated via FT-IR and TGA analysis, respectively. The objective of the research work was to investigate potential valorization routes for these biomass agro-residues in the context of a biorefinery, focusing on lignin extraction. The pretreatment results showed that the obtained lignins, derived from both procedures, were of high purity (>82 wt%). Under the organosolv procedure, peach kernel delignification showed the maximum value (∼16 wt%), while under microwave pretreatment, olive kernel delignification showed the maximum value (∼35 wt%). Grape pomace/seeds appeared to be the most resistant in both treatments. [less ▲]Detailed reference viewed: 22 (13 ULg) Aging Reduces the Stimulating Effect of Blue Light on Cognitive Brain FunctionsDaneault, Véronique; Hébert, Marc; Albouy, Geneviève et alin Sleep (2014)Detailed reference viewed: 22 (1 ULg) Brominated and phosphorus flame retardants in White-tailed Eagle Haliaeetus albicilla nestlings: Bioaccumulation and associations with dietary proxies (δ13C, δ15N and δ34S)Eulaers, Igor; Jaspers, Veerle; Halley, Duncan et alin Science of the Total Environment (2014), 478Very little is known on the exposure of high trophic level species to current-use brominated (BFRs) and phosphorus flame retardants (PFRs), although observations on their persistence, bioaccumulation ... [more ▼]Very little is known on the exposure of high trophic level species to current-use brominated (BFRs) and phosphorus flame retardants (PFRs), although observations on their persistence, bioaccumulation potential, and toxicity have been made. We investigated the accumulation of BFRs and PFRs, and their associations with dietary proxies (δ13C, δ15N and δ34S), in plasma and feathers of White-tailed Eagle Haliaeetus albicilla nestlings from Trøndelag, Norway. In addition to accumulation of a wide range of polybrominated diphenyl ether (PBDE) congeners in both plasma and feathers, all non-PBDE BFRs and PFRs could be measured in feathers, while in plasma only two of six PFRs, i.e. tris-(2-chloroisopropyl) phosphate (TCIPP) and tris-(2,3-dichloropropyl) phosphate (TDCPP) were detected. PFR concentrations in feathers (0.95-3,000 ng g-1) were much higher than selected organochlorines (OCs), such as polychlorinated biphenyl 153 (CB 153; 2.3-15 ng g-1) and dichlorodiphenyldichloroethylene (p,p’-DDE; 2.3-21 ng g-1), PBDEs (0.03-2.3 ng g-1) and non-PBDE BFRs (0.03-1.5 ng g-1). Non-significant associations of PFR concentrations in feathers with those in plasma (P≥0.74), and their similarity to reported atmospheric PFR concentrations, may suggest atmospheric PFR deposition on feathers. Most OCs and PBDEs, as well as tris(chloroethyl) phosphate (TCEP), tris(phenyl) phosphate (TPHP) and tri-(2-butoxyethyl) phosphate (TBOEP) were associated to δ15N and/or δ13C (all P≤0.02). Besides δ15N enrichment, δ34S was depleted in nestlings from fjords, inherently close to an urbanised centre. As such, both may have been a spatial proxy for anthropogenic disturbance, possible confounding their use as dietary proxy. [less ▲]Detailed reference viewed: 13 (1 ULg) Biostratigraphic significance of brachiopods near the Devonian–Carboniferous boundaryMottequin, Bernard ; Brice, Denise; Legrand-Blain, Mariein Geological Magazine (2014), 151The biostratigraphic significance of selected uppermost Famennian (Upper Devonian) and lower Tournaisian (Mississippian) brachiopod genera, belonging to the orders Rhynchonellida (e.g. Araratella ... [more ▼]The biostratigraphic significance of selected uppermost Famennian (Upper Devonian) and lower Tournaisian (Mississippian) brachiopod genera, belonging to the orders Rhynchonellida (e.g. Araratella), Spiriferida (e.g. Sphenospira, Prospira), Spiriferinida (Syringothyris) and Productida (except Chonetidina), is discussed. Owing to the difficulties of identifying productidine and strophalosiidine genera, in contrast to rhynchonellides and spiriferides, the biostratigraphic potential of the former has generally been overlooked. Brachiopods flourished in neritic environments that were unfavourable for conodonts and ammonoids. In the absence of the latter traditional marker fossils, they are potentially important for locating the Devonian–Carboniferous boundary in shallow water depositional settings in conjunction with rugose corals and foraminifers. On a worldwide scale, further work is required to reach a better assessment of the aftermath of the Hangenberg biological Crisis on brachiopods, notably in revising the faunas from the classical areas of the Famennian and Tournaisian stages in Western Europe. [less ▲]Detailed reference viewed: 26 (12 ULg) divand-1.0: n-dimensional variational data analysis for ocean observationsBarth, Alexander ; Beckers, Jean-Marie ; Troupin, Charles et alin Geoscientific Model Development [=GMD] (2014), 7A tool for multidimensional variational analysis (divand) is presented. It allows the interpolation and analysis of observations on curvilinear orthogonal grids in an arbitrary high dimensional space by ... [more ▼]A tool for multidimensional variational analysis (divand) is presented. It allows the interpolation and analysis of observations on curvilinear orthogonal grids in an arbitrary high dimensional space by minimizing a cost function. This cost function penalizes the deviation from the observations, the deviation from a first guess and abruptly varying fields based on a given correlation length (potentially varying in space and time). Additional constraints can be added to this cost function such as an advection constraint which forces the analysed field to align with the ocean current. The method decouples naturally disconnected areas based on topography and topology. This is useful in oceanography where disconnected water masses often have different physical properties. Individual elements of the a priori and a posteriori error covariance matrix can also be computed, in particular expected error variances of the analysis. A multidimensional approach (as opposed to stacking 2-dimensional analysis) has the benefit of providing a smooth analysis in all dimensions, although the computational cost is increased. Primal (problem solved in the grid space) and dual formulations (problem solved in the observational space) are implemented using either direct solvers (based on Cholesky factorization) or iterative solvers (conjugate gradient method). In most applications the primal formulation with the direct solver is the fastest, especially if an a posteriori error estimate is needed. However, for correlated observation errors the dual formulation with an iterative solver is more efficient. The method is tested by using pseudo observations from a global model. The distribution of the observations is based on the position of the ARGO floats. The benefit of the 3-dimensional analysis (longitude, latitude and time) compared to 2-dimensional analysis (longitude and latitude) and the role of the advection constraint are highlighted. The tool divand is free software, and is distributed under the terms of the GPL license (http://modb.oce.ulg.ac.be/mediawiki/index.php/divand). [less ▲]Detailed reference viewed: 79 (8 ULg) l'hypothermie induite dans l'encéphalopathie anoxo-ischémique du nouveau-néBARREA, Christophe ; Seghaye, Marie-Christine ; Battisti, Oreste in Percentile (2014)Detailed reference viewed: 8 (1 ULg) Choisir des cas exemplaires. La Strategic litigation face aux discriminationsLejeune, Aude ; Orianne, Jean-François in Déviance et Société (2014)Strategic litigation is one of the methods used by equal opportunity agencies in Europe to promote rights. Looking at the organizational level, this article aims to show how and under which circumstances ... [more ▼]Strategic litigation is one of the methods used by equal opportunity agencies in Europe to promote rights. Looking at the organizational level, this article aims to show how and under which circumstances strategic litigation is deemed relevant to fight employment discrimination in Belgium and on which grounds and arguments exemplary cases are chosen. The article also highlights possible changes in the mobilizations of courts and the judicial arena. [less ▲]Detailed reference viewed: 49 (11 ULg) The Rank Minrelation CoefficientMeyer, Patrick in Quality Technology & Quantitative Management (2014), 11Detailed reference viewed: 10 (2 ULg) Un monde entre accélération et incertitudesSantander, Sébastian in Interventions Economiques = Papers in Political Economy (2014)Detailed reference viewed: 17 (5 ULg) Erratum: SN 2007uy − metamorphosis of an aspheric Type Ib explosionRoy, Rupak in Monthly Notices of the Royal Astronomical Society (2014)The supernovae (SNe) of Type Ibc are rare and the detailed characteristics of these explosions have been studied only for a few events. Unlike Type II SNe, the progenitors of Type Ibc have never been ... [more ▼]The supernovae (SNe) of Type Ibc are rare and the detailed characteristics of these explosions have been studied only for a few events. Unlike Type II SNe, the progenitors of Type Ibc have never been detected in pre-explosion images. So, to understand the nature of their progenitors and the characteristics of the explosions, investigation of proximate events are necessary. Here we present the results of multi-wavelength observations of Type Ib \sn\ in the nearby ($\sim$ 29.7 Mpc) galaxy NGC 2770. Analysis of the photometric observations revealed this explosion as an energetic event with peak absolute $R$ band magnitude $-18.5\pm0.16$, which is about one mag brighter than the mean value ($-17.6\pm0.6$) derived for well observed Type Ibc events. The SN is highly extinguished, \ebv\ = 0.63$\pm$0.15 mag, mainly due to foreground material present in the host galaxy. From optical light curve modeling we determine that about 0.3 \msun\ radioactive $^{56}$Ni is produced and roughly 4.4 \msun\ material is ejected during this explosion with liberated energy $\sim 15\times10^{51}$ erg, indicating the event to be an energetic one. Through optical spectroscopy, we have noticed a clear aspheric evolution of several line forming regions, but no dependency of asymmetry is seen on the distribution of $^{56}$Ni inside the ejecta. The SN shock interaction with the circumburst material (CSM) is clearly noticeable in radio follow-up, presenting a Synchrotron Self Absorption (SSA) dominated light curve with a contribution of Free Free Absorption (FFA) during the early phases. Assuming a Wolf-Rayet (WR) star, with wind velocity $\ga 10^3 {\rm km~s}^{-1}$, as a progenitor, we derive a lower limit to the mass loss rate inferred from the radio data as $\dot{M} \ga 2.4\times10^{-5}$ \msun\,~yr$^{-1}$, which is consistent with the results obtained for other Type Ibc SNe bright at radio frequencies. [less ▲]Detailed reference viewed: 8 (3 ULg) Seasonal and depth-related biodiversity of leaf epiphytic Cheilostome Bryozoa in a Mediterranean Posidonia oceanica meadowLepoint, Gilles ; Balancier, Boris; Gobert, Sylvie in Cahiers de Biologie Marine (2014), 55(1), : Epiphytes living fixed on Posidonia oceanica L. (Delile) are important faunal and floral components of seagrass meadow ecosystems. They are involved as main actors in trophic web and major ecosystem ... [more ▼]: Epiphytes living fixed on Posidonia oceanica L. (Delile) are important faunal and floral components of seagrass meadow ecosystems. They are involved as main actors in trophic web and major ecosystem processes of this endangered coastal habitat. This paper aims to assess the seasonality and the bathymetric variability of epiphytic Bryozoa which are the most important animal group in terms of both diversity and abundance living on P. oceanica leaves. Posidonia shoots were collected from the Revellata Bay (Corsica, France) in four seasons from 7 to 30 m depth. Colony densities reached more than 87000 colonies. m-2 at 10 m depth in spring. The bryozoan species distribution and abundance changed substantially according to seasons and depths, being maximum in spring and minimal in winter. Dominant colony morphotypes change according to depth, probably in relation with water motion gradient. This confirms that there are bathymetric and seasonal variability for different epiphytic organisms colonizing the Posidonia leaves. This enlightens the importance to protect Posidonia meadow on its full depth extension and in its connectivity with other habitats to conserve optimal epiphytic biodiversity and functions. [less ▲]Detailed reference viewed: 25 (7 ULg) Indian Institutions in the Early 1980s: The Pre-history of the Great TransformationMaiorano, Diego in Modern Asian Studies (2014)In 1989 India’s political system underwent a process of profound change which affected the entire institutional setup of the country. Power was radically redistributed, as it began to flow from the ... [more ▼]In 1989 India’s political system underwent a process of profound change which affected the entire institutional setup of the country. Power was radically redistributed, as it began to flow from the central government to the states, and from the Prime Minister Office to the other institutions of the state. The paper seeks to show how things worked on the eve of such a redrawing of India’s institutional setup, by analysing the sever institutional crisis which occurred during Mrs Gandhi’s final term in office as India’s Prime Minister. In addition, an effort is made to link the working of India’s institutions to the configuration of the party system, thus stressing the importance of political dynamics in the functioning of parliamentary democracies. [less ▲]Detailed reference viewed: 9 (2 ULg) Cardiovascular safety of strontium ranelate: real-life assessment in clinical practice.Donneau, Anne-Françoise ; Reginster, Jean-Yves in Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA (2014), 25Detailed reference viewed: 20 (12 ULg) The impact of lexical frequency on sentence comprehension in children with specific language impairmentLeclercq, Anne-Lise ; Majerus, Steve ; Jacob, Laura et alin Research in Developmental Disabilities (2014), 35Children with SLI generally exhibit poor sentence comprehension skills. We examined the specific impact of grammatical complexity and lexical frequency on comprehension performance, yielding contrasting ... [more ▼]Children with SLI generally exhibit poor sentence comprehension skills. We examined the specific impact of grammatical complexity and lexical frequency on comprehension performance, yielding contrasting results. The present study sheds new light on sentence comprehension in children with SLI by investigating a linguistic factor which has attracted little research interest: the impact of the lexical frequency of known words on sentence comprehension. We also examined the impact of grammatical complexity and sentence length by independently varying these two factors. Fifteen children with SLI, 15 age- and IQ-matched controls, and 15 controls matched on lexical and grammatical skills, performed sentence comprehension tasks in which three linguistic factors were manipulated: lexical frequency (sentences containing words of either low or high lexical frequency), grammatical complexity (sentence containing either a subject relative clause or an object relative clause) and sentence length (either short or long sentences). Results indicated that children with SLI performed more poorly overall compared to age- and IQmatched children and to lexical and morphosyntactic age-matched children. However, their performance was not more affected by either sentence length or clause type than that of control children. Only lexical frequency affected sentence comprehension to a greater extent in children with SLI relative to the control groups, revealing that SLI children’s sentence comprehension abilities are particularly affected by the presence of lowfrequency but familiar words. [less ▲]Detailed reference viewed: 15 (3 ULg) Monitoring batch lipase catalyzed interesterification of palm oil and fractions by differential scanning calorimetryDanthine, Sabine ; DeClercq, Nathalie; Dewettinck, Koen et alin Journal of Thermal Analysis and Calorimetry (2014)Detailed reference viewed: 10 (0 ULg) The mitochondrial respiratory chain of the secondary green alga Euglena gracilis shares many additional subunits with parasitic Trypanosomatidae.Perez, Emilie ; Lapaille, Marie; Degand, Herve et alin Mitochondrion (2014)The mitochondrion is an essential organelle for the production of cellular ATP in most eukaryotic cells. It is extensively studied, including in parasitic organisms such as trypanosomes, as a potential ... [more ▼]The mitochondrion is an essential organelle for the production of cellular ATP in most eukaryotic cells. It is extensively studied, including in parasitic organisms such as trypanosomes, as a potential therapeutic target. Recently, numerous additional subunits of the respiratory-chain complexes have been described in Trypanosoma brucei and Trypanosoma cruzi. Since these subunits had apparently no counterparts in other organisms, they were interpreted as potentially associated with the parasitic trypanosome lifestyle. Here we used two complementary approaches to characterise the subunit composition of respiratory complexes in Euglena gracilis, a non-parasitic secondary green alga related to trypanosomes. First, we developed a phylogenetic pipeline aimed at mining sequence databases for identifying homologs to known respiratory-complex subunits with high confidence. Second, we used MS/MS proteomics after two-dimensional separation of the respiratory complexes by Blue Native- and SDS-PAGE to both confirm in silico predictions and to identify further additional subunits. Altogether, we identified 41 subunits that are restricted to E. gracilis, T. brucei and T. cruzi, along with 48 classical subunits described in other eukaryotes (i.e. plants, mammals and fungi). This moreover demonstrates that at least half of the subunits recently reported in T. brucei and T. cruzi are actually not specific to Trypanosomatidae, but extend at least to other Euglenozoa, and that their origin and function are thus not specifically associated with the parasitic lifestyle. Furthermore, preliminary biochemical analyses suggest that some of these additional subunits underlie the peculiarities of the respiratory chain observed in Euglenozoa. [less ▲]Detailed reference viewed: 12 (2 ULg) Brazil’s African strategy is a quest for power, profit and sharing knowledgeSantander, Sébastian in Africa at LSE (2014)Detailed reference viewed: 10 (1 ULg) Associative learning of Nasonia vitripennis Walker (Hymenoptera: Pteromalidae) to methyldisulfanylmethaneFrederickx, Christine ; Verheggen, François ; Brostaux, Yves et alin Journal of Forensic Sciences (2014)Traditional methods of volatile detection used by police typically consist of reliance on canine olfaction. However, dogs have some limitations such as cost of training and time of conditioning. The ... [more ▼]Traditional methods of volatile detection used by police typically consist of reliance on canine olfaction. However, dogs have some limitations such as cost of training and time of conditioning. The possibility of using parasitic wasps for detecting explosives and narcotics has been developed. Moreover, wasps are cheap to produce and can be conditioned with impressive speed for a specific chemical-detection task. We examined the ability of Nasonia vitripennis Walker to learn and respond to methydisulfanylmethane (DMDS), a volatile discriminator of cadaver. The training aimed to form an association between an unconditioned stimulus (pupae) and the conditioned stimulus (odor source). After the training, the time spent of conditioned wasps in the DMDS chamber was measured. Statistical analysis showed that the increasing concentrations involved an increase in the time spent in the chamber containing DMDS. This study indicates that N. vitripennis can respond to DMDS, which provide further support for its development as a biological sensor. [less ▲]Detailed reference viewed: 55 (5 ULg) Le dernier maillon de la chaîne des tourbières des hauts-plateaux ardennais : le projet LIFE+ « restauration des habitats naturels de l’Ardenne liégeoise »Plunus, Julie; Parkinson, Denis ; Frankard, Philippe et alin Forêt Wallonne (2014)Detailed reference viewed: 12 (2 ULg) LakeMIP Kivu: evaluating the representation of a large, deep tropical lake by a set of one-dimensional lake modelsThiery, Wim; Stepanenko, Victor M.; Fang, Xing et alin Tellus : Series A (2014), 66Detailed reference viewed: 6 (1 ULg) Facultative paedomorphosis and the pattern of intra- and interspecific variation in cranial skeleton: lessons from European newts (Ichthyosaura alpestris and Lissotriton vulgaris)Ivanović, Ana; Cvijanović, Milena; Denoël, Mathieu et alin Zoomorphology (2014), 133(1), 99-109Paedomorphosis, the presence of ancestral larval and juvenile traits that occur at the descendent adult stage, is an evolutionary phenomenon that shaped morphological evolution in many vertebrate lineages ... [more ▼]Paedomorphosis, the presence of ancestral larval and juvenile traits that occur at the descendent adult stage, is an evolutionary phenomenon that shaped morphological evolution in many vertebrate lineages, including tailed amphibians. Among salamandrid species, paedomorphic and metamorphic phenotypes can be observed within single populations (facultative paedomorphosis). Despite wide interest in facultative paedomorphosis and polymorphism produced by heterochronic changes (heterochronic polymorphism), the studies that investigate intraspecific morphological variation in facultative paedomorphic species are largely missing. By quantifying the cranium size and development (bone development and remodeling), we investigated the variation at multiple levels (i.e., between sexes, populations and species) of two facultatively paedomorphic European newt species: the alpine and the smooth newt. The pattern of variation between paedomorphs (individuals keeping larval traits at the adult stage) and metamorphs (metamorphosed adult individuals) varied between species and among populations within a single species. The patterns of variation in size and skull formation appear to be more uniform in the alpine than in the smooth newt, indicating that developmental constraints differed between species (more pronounced in alpine than in smooth newt). Our study shows that the cranial skeleton provides detailed insight in the pattern of variation and divergence in heterochronic polymorphism within and between species and open new questions related to heterochronic polymorphism and evolution of cranial skeleton. [less ▲]Detailed reference viewed: 89 (48 ULg) Comparative evaluation of existing and new methods for correcting ocular artifacts in electroencephalographic recordingsKirkove, Murielle ; François, Clémentine ; Verly, Jacques in Signal Processing (2014), 98(C), 102-120EEG signals are often contaminated by ocular artifacts (OAs), in particular when they are recorded for a subject that is, in principle, awake, such as in a study of drowsiness. It is generally desirable ... [more ▼]EEG signals are often contaminated by ocular artifacts (OAs), in particular when they are recorded for a subject that is, in principle, awake, such as in a study of drowsiness. It is generally desirable to detect and/or correct these OAs before interpreting the EEG signals. We have identified 11 existing methods for dealing with OAs. Their study allowed us to create 16 new methods. We performed a comparative performance evaluation of the resulting 27 distinct methods using a common set of data and a common set of metrics. The data was recorded during a driving task of about two hours in a driving simulator. This led to a ranking of all methods, with five emerging clear winners, comprising two existing methods and three new ones. [less ▲]Detailed reference viewed: 19 (5 ULg) Development of the simultaneous detection of Ralstonia solanacearum race 3 and clavibacter michiganensis subsp. Sepedonicus in potato tubers by a multiplex real-time PCR assayMassart, Sébastien ; Nagy, Catherine; Jijakli, Haissam in European Journal of Plant Pathology (2014), 138Detailed reference viewed: 11 (0 ULg) Primary production in a tropical large lake: The role of phytoplankton compositionDarchambeau, François ; Sarmento, Hugo; Descy, Jean-Pierrein Science of the Total Environment (2014), 473-474Detailed reference viewed: 7 (0 ULg) Validation d’un test d’inhibition auprès d’enfants présentant un trouble déficitaire de l’attention avec/sans hyperactivitéCatale, Corinne ; Lejeune, Caroline ; Schmitz, Xavier et alin Canadian Journal of Behavioural Science = Revue Canadienne des Sciences du Comportement (2014), 46(1), 66-72The objective of this study was to assess the development of inhibition in 5-11 years old children with the “Stroop fruit” task (see Archibald & Kerns, 1999; Catale & Meulemans, 2005) and to examine the ... [more ▼]The objective of this study was to assess the development of inhibition in 5-11 years old children with the “Stroop fruit” task (see Archibald & Kerns, 1999; Catale & Meulemans, 2005) and to examine the clinical value of this tool. 346 French-speaking children without any developmental disorders or learning disabilities were included in this study. A clinical group of 25 children with attention deficit and hyperactivity disorder was also assessed with this task. Developmental analyses on age groups show an enhancement of performance in the interference condition between 5 and 8 years old. Furthermore, results also show that the clinical group performed significantly less accurately that the control group for the interference condition, which confirms the clinical interest of this tool. [less ▲]Detailed reference viewed: 111 (15 ULg) Dorsomedial prefrontal metabolism and unawareness of current characteristics of personality traits in Alzheimer’s diseaseJedidi, Haroun ; Feyers, Dorothée ; Collette, Fabienne et alin Social Cognitive and Affective Neuroscience (2014)Anosognosia is a complex symptom corresponding to a lack of awareness of one’s current clinical status. Anosognosia for cognitive deficits has frequently been described in Alzheimer’s disease (AD), while ... [more ▼]Anosognosia is a complex symptom corresponding to a lack of awareness of one’s current clinical status. Anosognosia for cognitive deficits has frequently been described in Alzheimer’s disease (AD), while unawareness of current characteristics of personality traits has rarely been considered. We used a well-established questionnaire-based method in a group of 37 AD patients and in healthy controls to probe self- and hetero-evaluation of patients’ personality and we calculated differential scores between each participant’s and his/her relative’s judgments. A brain-behavior correlation was performed using FDG-PET images. The behavioral data showed that AD patients presented with anosognosia for current characteristics of their personality and their anosognosia was primarily explained by impaired third perspective taking. The brain-behavior correlation analysis revealed a negative relationship between anosognosia for current characteristics of personality and dorsomedial prefrontal cortex (dMPFC) activity. Behavioral and neuroimaging data are consistent with the view that impairment of different functions subserved by the dMPFC (self-evaluation, inferences regarding complex enduring dispositions of self and others, confrontation of perspectives in interpersonal scripts) plays a role in anosognosia for current characteristics of personality in AD patients. [less ▲]Detailed reference viewed: 27 (14 ULg) Strontiohurlbutite, SrBe2(PO4)2, a new mineral from Nanping no. 31 pegmatite, Fujian Province, Southeastern ChinaRao, C; Wang, R; Hatert, Frédéric et alin American Mineralogist (2014), 99Detailed reference viewed: 9 (2 ULg) Epidemiological and nonclinical studies investigating effects of iron in carcinogenesis-A critical reviewBeguin, Yves ; Aapro, M.; Ludwig, H. et alin Critical Reviews in Oncology/Hematology (2014), 89The efficacy and tolerability of intravenous (i.v.) iron in managing cancer-related anemia and iron deficiency has been clinically evaluated and reviewed recently. However, long-term data in cancer ... [more ▼]The efficacy and tolerability of intravenous (i.v.) iron in managing cancer-related anemia and iron deficiency has been clinically evaluated and reviewed recently. However, long-term data in cancer patients are not available; yet, long-term i.v. iron treatment in hemodialysis patients is not associated with increased cancer risk. This review summarizes epidemiological and nonclinical data on the role of iron in carcinogenesis. In humans, epidemiological data suggest correlations between certain cancers and increased iron exposure or iron overload. Nonclinical models that investigated whether iron can enhance carcinogenesis provide only limited evidence relevant for cancer patients since they were typically based on high iron doses as well as injection routes and iron formulations which are not used in the clinical setting. Nevertheless, in the absence of long-term outcome data from prospectively defined trials in i.v. iron-treated cancer patients, iron supplementation should be limited to periods of concomitant anti-tumor treatment. [less ▲]Detailed reference viewed: 8 (1 ULg) SHIP2 signaling in normal and pathological situations: Its impact on cell proliferation.Elong Edimo, W; Schurmans, Stéphane ; Roger, PP et alin Advances in Biological Regulation (2014), 54Phosphoinositide 5-phosphatases are critical enzymes in modulating the concentrations of PI(3,4,5)P3, PI(4,5)P2 and PI(3,5)P2. The SH2 domain containing inositol 5-phosphatases SHIP1 and SHIP2 belong to ... [more ▼]Phosphoinositide 5-phosphatases are critical enzymes in modulating the concentrations of PI(3,4,5)P3, PI(4,5)P2 and PI(3,5)P2. The SH2 domain containing inositol 5-phosphatases SHIP1 and SHIP2 belong to this family of enzymes that dephosphorylate the 5 position of PI(3,4,5)P3 to produce PI(3,4)P2. Data obtained in zebrafish and in mice have shown that SHIP2 is critical in development and growth. Exome sequencing identifies mutations in the coding region of SHIP2 as a cause of opsismodysplasia, a severe but rare chondrodysplasia in human. SHIP2 has been reported to have both protumorigenic and tumor suppressor function in human cancer very much depending on the cell model. This could be linked to the relative importance of PI(3,4)P2 (a product of SHIP2 phosphatase activity) which is also controlled by the PI 4-phosphatase and tumor suppressor INPP4B. In the glioblastoma cell line 1321 N1, that do not express PTEN, lowering SHIP2 expression has an impact on the levels of PI(3,4,5)P3, cell morphology and cell proliferation. It positively stimulates cell proliferation by decreasing the expression of key regulatory proteins of the cell cycle such as p27. Together the data point out to a role of SHIP2 in development in normal cells and at least in cell proliferation in some cancer derived cells. [less ▲]Detailed reference viewed: 21 (7 ULg) Jupiter's MagnetotailKrupp, Norbert; Kronberg, Elena; Radioti, Aikaterini in AGU Monograph (2014)Detailed reference viewed: 11 (2 ULg) Simulation and optimization of a CHP biomass plant and district heating networkSartor, Kevin ; Quoilin, Sylvain ; Dewallef, Pierre in Applied Energy (2014)Biomass Combined Heat and Power (CHP) plants connected to district heating (DH) networks are recognized nowadays as a very good opportunity to increase the share of renewable sources into energy systems ... [more ▼]Biomass Combined Heat and Power (CHP) plants connected to district heating (DH) networks are recognized nowadays as a very good opportunity to increase the share of renewable sources into energy systems. However, as CHP plants are not optimized for electricity production, their operation is profitable only if a sufficient heat demand is available throughout the year. Most of the time, pre-feasibility studies are based on peak power demand and business plans only assume monthly or yearly consumption data. This approach usually turns out to overestimate the number of operating hours or oversize the plant capacity. This contribution presents a methodology intended to be simple and effective that provides accurate estimations of economical, environmental and energetic performances of CHP plants connected to district heating networks. A quasi-steady state simulation model of a CHP plant combined with a simulation model of the district heating network installed on the Campus of the University in Liège (Belgium) is used as an application framework to demonstrate the effectiveness of the selected approach. Based on the developed model and actual consumption data, several scenarios for energy savings are considered and ranked. The potential energy savings and resulting energy costs are estimated enabling more general conclusions to be drawn on the opportunity of using district heating networks in urban districts for Western Europe countries. [less ▲]Detailed reference viewed: 19 (4 ULg) La culture comme objetBadir, Sémir in Semiotica (2014), 198La culture peut-elle être un objet d’étude à part entière ? Les sciences de la culture le donnent implicitement à penser par leur intitulé même, à l’instar de ce qu’ont poursuivi, à l’égard de leurs ... [more ▼]La culture peut-elle être un objet d’étude à part entière ? Les sciences de la culture le donnent implicitement à penser par leur intitulé même, à l’instar de ce qu’ont poursuivi, à l’égard de leurs objets respectifs, les sciences de l’homme, de la société et de la vie. Une telle objectivation, toutefois, ne va pas de soi, les caractères définitoires de la culture — à la fois comme totalité et comme singularité — dérogent à l’objectivation scientifique ordinaire. Dans un premier temps, on commence par considérer trois tentatives d’objectivation de la culture menées en sémiotique, sous le rapport de la sémiosphère (Lotman), de l’esthésie (Rastier) et de la langue. Le crédit accordé à la troisième tentative nous invite à interroger, dans un second temps, le rapport entre langue, texte et culture à partir de la distinction théorique proposée par Hjelmslev entre analyse et fragmentation. Langue, texte et culture sont fonction d’un seul objet empirique pour lesquelles différentes focalisations sont possibles. C’est une fonction restreinte et analytique qui règle le rapport des textes à la langue ; au contraire c’est une fonction extensive, fragmentée et synthétique qui laisse voir les textes comme des œuvres insérées dans les pratiques de la culture. [less ▲]Detailed reference viewed: 8 (0 ULg) Climate-controlled palynofacies and miospore biostratigraphy of the Early Devonian Jauf Formation, northern Saudi ArabiaBreuer, Pierre; Leszczynski, S.; Miller, M.A. et alin Review of Palaeobotany and Palynology (2014), ?The Jauf Formation miospore succession is synthesized in terms of paleoenvironments and sequence stratigraphy. The data set for this study is obtained from four overlapping, continuously cored, and ... [more ▼]The Jauf Formation miospore succession is synthesized in terms of paleoenvironments and sequence stratigraphy. The data set for this study is obtained from four overlapping, continuously cored, and extensively sampled, boreholes that for a 940 ft composite section. The Jauf Formation ranges in age from late Pragian to latest Emsian. The palynological assemblages, recognized herein, provide the basis for recognizing depositional environments present in the Early Devonian of northern Saudi Arabia. Transgressive – regressive cycles are indicated, not only by lithology but by marked changes in the marine to terrestrially dominated palynological assemblages. Flooding events are recognized by the replacement of spore dominated assemblages by organic-walled microphytoplankton. The maximum flooding interval for the Jauf is reinterpreted based on a correlative event consisting of diverse acritarchs and abundant chitinozoans. [Add details on the paly and sequence stratigraphy here. No.cycles and order.] The new northern Gondwanan biozonation developed by Breuer and Steemans (2012) and used here allows a high-resolution regional biozonation for the Arabian Plate and more intercontinental [?] correlation of the Jauf Formation with other Gondwanan and Euramerican localities. One new spore genus (Zonohilates) and four spore species (Insculptospora maxima, Camarozonotriletes alruwailii, Devonomonoletes crassus and Zonohilates vulneratus) are newly proposed. [less ▲]Detailed reference viewed: 58 (6 ULg) Understanding the performance of the FLake model over two African Great LakesThiery, Wim; Martynov, Andrey; Darchambeau, François et alin Geoscientific Model Development [=GMD] (2014), 7Detailed reference viewed: 5 (0 ULg) A modeling approach to determine the importance of dynamic regulation of plant hydraulic conductivities on the water uptake dynamics in the soil-plant-atmosphere systemLobet, Guillaume ; Pagès, Loïc; Draye, Xavierin Ecological Modelling (2014), (0), 1-11Detailed reference viewed: 12 (3 ULg) Estimation of the error density in a semiparametric transformation modelColling, Benjamin; Heuchenne, Cédric ; Samb, Rawane et alin Annals of the Institute of Statistical Mathematics (2014)Detailed reference viewed: 12 (0 ULg) Lack of isocitrate lyase in Chlamydomonas leads to changes in carbon metabolism and in the response to oxidative stress under mixotrophic growth.Plancke, Charlotte; Vigeolas, Hélène ; Hohner, Ricarda et alin The Plant journal : for cell and molecular biology (2014), 77(3), 404-417Isocitrate lyase is a key enzyme of the glyoxylate cycle. This cycle plays an essential role in cell growth on acetate, and is important for gluconeogenesis as it bypasses the two oxidative steps of the ... [more ▼]Isocitrate lyase is a key enzyme of the glyoxylate cycle. This cycle plays an essential role in cell growth on acetate, and is important for gluconeogenesis as it bypasses the two oxidative steps of the tricarboxylic acid (TCA) cycle in which CO2 is evolved. In this paper, a null icl mutant of the green microalga Chlamydomonas reinhardtii is described. Our data show that isocitrate lyase is required for growth in darkness on acetate (heterotrophic conditions), as well as for efficient growth in the light when acetate is supplied (mixotrophic conditions). Under these latter conditions, reduced acetate assimilation and concomitant reduced respiration occur, and biomass composition analysis reveals an increase in total fatty acid content, including neutral lipids and free fatty acids. Quantitative proteomic analysis by 14 N/15 N labelling was performed, and more than 1600 proteins were identified. These analyses reveal a strong decrease in the amounts of enzymes of the glyoxylate cycle and gluconeogenesis in parallel with a shift of the TCA cycle towards amino acid synthesis, accompanied by an increase in free amino acids. The decrease of the glyoxylate cycle and gluconeogenesis, as well as the decrease in enzymes involved in beta-oxidation of fatty acids in the icl mutant are probably major factors that contribute to remodelling of lipids in the icl mutant. These modifications are probably responsible for the elevation of the response to oxidative stress, with significantly augmented levels and activities of superoxide dismutase and ascorbate peroxidase, and increased resistance to paraquat. [less ▲]Detailed reference viewed: 32 (19 ULg) Die Deutschsprachige Gemeinschaft und die sechste StaatsreformBehrendt, Christian ; Vrancken, Martin in Europäisches Journal für Minderheitenfragen (2013), Jahr 2013Detailed reference viewed: 58 (15 ULg) Developing a Global Food Security PolicyPaveliuc Olariu, Codrin in Advances in Agriculture & Botanics (2013), 5(3), 169-173The world agrifood system continues to be in a vulnerable state as we fast approach the 2015 deadline for the Millennium Development Goal of halving the proportion of people suffering from hunger ... [more ▼]The world agrifood system continues to be in a vulnerable state as we fast approach the 2015 deadline for the Millennium Development Goal of halving the proportion of people suffering from hunger. Although a number of countries have made important changes towards developing food related policies, at the level of the global community, the challenge of food (in)security has not been able push policy makers to develop a common solution to be applied, solution that could include the regional and national specificities registered around the world, while also integrating a global view of increasing agricultural productivity, higher farm competitiveness and without relinquishing the national or individual right for food governance. [less ▲]Detailed reference viewed: 10 (3 ULg) Food scarcity as a trigger for civil unrestPaveliuc Olariu, Codrin in Advances in Agriculture & Botanics (2013), 5(3), 174-178Throughout history, there have been periods of civil unrest. From religious wars to wars of conquest, historians believe that the causes of wars are closely related with religious, political or economic ... [more ▼]Throughout history, there have been periods of civil unrest. From religious wars to wars of conquest, historians believe that the causes of wars are closely related with religious, political or economic reasons. But when we discuss about civil unrest inside a country with the power of transforming it into a civil war and expanding at regional level, the triggering factors have yet to be discovered. From the period of the Qing Dinasty (1644-1911) in China to the Great Depression in the 1930s in the USA or the beginning of the second World War in France, these periods have two common points: civil unrest and food shortages. [less ▲]Detailed reference viewed: 21 (1 ULg) Is the multicolored Asian ladybeetle, Harmonia axyridis, the most abundant natural enemy to aphids in agroecosystems?Vandereycken, Axel ; Durieux, Delphine ; Joie, Emilie et alin Journal of Insect Science [=JIS] (2013), 13(158), 1-14The multicolored Asian ladybeetle, Harmonia axyridis Pallas (Coleoptera: Coccinellidae), was introduced into Western Europe in the late 1990s. Since the late 2000s, this species has been commonly ... [more ▼]The multicolored Asian ladybeetle, Harmonia axyridis Pallas (Coleoptera: Coccinellidae), was introduced into Western Europe in the late 1990s. Since the late 2000s, this species has been commonly considered one of the most abundant aphid predators in most Western European coun- tries. In spite of the large amount of research on H. axyridis, information concerning its relative abundance in agroecosystems is lacking. This study aims to evaluate the abundance of H. axyridis within the aphidophage community in four crops situated in southern Belgium: wheat, Triticum aestivum L. (Poales: Poaceae), corn, Zea mays, potato, Solanum tuberosum (Solanales: Solanaceae), and broad bean Vicia faba (Fabales: Fabaceae). In order to assess the species diver- sity, the collected data were analyzed by considering (1) the species richness and (2) the evenness according to the Shannon diversity index. Eleven aphidophages were observed in every invento- ried agroecosystem, including five abundant species: three coccinellids, the seven-spotted ladybug, Coccinella septempunctata L. (Coleoptera: Coccinellidae), the 14-spotted Ladybird, Propylea quatuordecimpunctata, and H. axyridis; one hoverfly, the marmalade hoverfly, Episyr- phus balteatus De Geer (Diptera: Syrphidae); and one lacewing, the common green lacewing, Chrysoperla carnea Stephens sensu lato (= s.l.) (Neuroptera: Chrysopidae). Harmonia axyridis has been observed to thrive, breed, and reproduce on the four studied crops. Harmonia axyridis is the most abundant predator of aphids in corn followed by C. septempunctata, which is the main aphid predator observed in the three other inventoried crops. In wheat and potato fields, H. axyridis occurs in low numbers compared to other aphidophage. These observations suggest that H. axyridis could be considered an invasive species of agrosystems, and that potato and wheat may intermittently act as refuges for other aphidophages vulnerable to intraguild predation by this invader. Harmonia axyridis is not the most abundant aphid predator in the main Belgian crops. [less ▲]Detailed reference viewed: 16 (4 ULg) Assessment of pfcrt 72-76 haplotypes eight years after chloroquine withdrawal in Kinshasa, Democratic Republic of CongoMvumbi, Dieudonné; BOREUX, Raphaël ; SACHELI, Rosalie et alin Malaria Journal (2013), 12BACKGROUND: In 2001, the World Health Organization (WHO) has recommended the use of artemisinin-based combination therapy (ACT) as the first-line treatment of uncomplicated malaria cases, as monotherapies ... [more ▼]BACKGROUND: In 2001, the World Health Organization (WHO) has recommended the use of artemisinin-based combination therapy (ACT) as the first-line treatment of uncomplicated malaria cases, as monotherapies had become ineffective in many parts of the world. As a result, the Democratic Republic of Congo (DRC) withdrew chloroquine (CQ) from its malaria treatment policy in 2002 and an artesunate (AS)-amodiaquine (AQ) combination became the ACT of choice in DRC in 2005. AQ-resistance (AQR) has been reported in several parts of the world and mutations in codons 72-76 of the Plasmodium falciparum chloroquine-resistance transporter (pfcrt) gene have been strongly correlated with resistance, especially mutations encoding the SVMNT haplotype. This haplotype was first identified in Southeast Asia and South America but was recently reported in two African countries neighbouring DRC. These facts raised two questions: the first about the evolution of CQ resistance (CQR) in DRC and the second about the presence of the SVMNT haplotype, which would compromise the use of AQ as a partner drug for ACT. METHODS: A total of 213 thick blood films were randomly collected in 2010 from a paediatric clinic in Kinshasa, DRC. Microscopy controls and real-time polymerase chain reaction (RT-PCR) were performed for Plasmodium species identification. Haplotypes of the pfcrt gene were determined by sequencing. RESULTS: The K76T mutation was detected in 145 out of 198 P. falciparum-positive samples (73.2%).In these 145 resistant strains, only the CVIET haplotype was detected. CONCLUSIONS: This study is the first to assess the molecular markers of resistance to CQ and AQ after the introduction of ACT in DRC. The results suggest first that CQR is decreasing, as wild-type pfcrt haplotypes were found in only 26.8% of the samples and secondly that the SVMNT haplotype is not yet present in Kinshasa, suggesting that AQ remains valid as a partner drug for ACT in this region. [less ▲]Detailed reference viewed: 22 (6 ULg) Sémiotique de la communication en co-présence et à distance. Du textualisme à la sémiotique des pratiquesDondero, Maria Giulia ; Angenot, Valérie ; Joachim, Guillaume et alin Interfaces Numériques (2013), 2(3), 531-567This article aims to challenge and reflect on the theories issued by both textualist semiotics and the semiotics of practices. Our reflexion shall focus, on the one hand, on synchronic communication in ... [more ▼]This article aims to challenge and reflect on the theories issued by both textualist semiotics and the semiotics of practices. Our reflexion shall focus, on the one hand, on synchronic communication in copresence and, on the other hand, on virtual participative remote collaboration by means of digital interfaces. In high-level collaborative activities —such as remote architectural project developments— the practices of the partners involved in the communication process are conditioned by intrinsic material constraints; they have to gradually readapt to the constantly renewed dynamics of the predicative structures in order to ensure communication efficiency. One of the main purposes of this paper consists in exploring the theoretical propositions and methodologies connected to practices, as proposed by Jacques Fontanille’s semiotics (2008) and by Jacques Theureau’s ergonomics of the “course of action” (2006). The results of these theoretical reflections will be tested through their application to a specific corpus, in an aim to confront the efficiency of such proposals with a case study. Multimodality and the role played by the different types of utterances in the efficiency of communication, as well as the adaptation of the semiotic practices to the digital interfaces also fall under the scope of this paper. Besides, the authors propose a reflection on potential mediations between the ongoing practices and their objectivation through textualisation and notation. [less ▲]Detailed reference viewed: 31 (7 ULg) On the Encoding of Proteins for Disordered Regions PredictionBecker, Julien ; Maes, Francis; Wehenkel, Louis in PLoS ONE (2013)Disordered regions, i.e., regions of proteins that do not adopt a stable three-dimensional structure, have been shown to play various and critical roles in many biological processes. Predicting and ... [more ▼]Disordered regions, i.e., regions of proteins that do not adopt a stable three-dimensional structure, have been shown to play various and critical roles in many biological processes. Predicting and understanding their formation is therefore a key sub-problem of protein structure and function inference. A wide range of machine learning approaches have been developed to automatically predict disordered regions of proteins. One key factor of the success of these methods is the way in which protein information is encoded into features. Recently, we have proposed a systematic methodology to study the relevance of various feature encodings in the context of disulfide connectivity pattern prediction. In the present paper, we adapt this methodology to the problem of predicting disordered regions and assess it on proteins from the 10th CASP competition, as well as on a very large subset of proteins extracted from PDB. Our results, obtained with ensembles of extremely randomized trees, highlight a novel feature function encoding the proximity of residues according to their accessibility to the solvent, which is playing the second most important role in the prediction of disordered regions, just after evolutionary information. Furthermore, even though our approach treats each residue independently, our results are very competitive in terms of accuracy with respect to the state-of-the-art. A web-application is available at http://m24.giga.ulg.ac.be:81/x3Disorder. [less ▲]Detailed reference viewed: 7 (3 ULg) Compte-rendu de l'ouvrage de S. Gaudet, N. Burlone, M. Lévesque (dir.): Repenser la famille et ses transitions. Repenser les politiques publiques.Schnitzler, Marie in Lectures (2013)Detailed reference viewed: 11 (0 ULg) Reintroduction of the invasive mosquito species Aedes albopictus in Belgium in July 2013Boukraa, Slimane ; Raharimalala, Fara Nantenaina ; Zimmer, Jean-Yves et alin Parasite (Paris, France) (2013), 20(54), Since its first report in 2000, the invasive mosquito Aedes albopictus was not found any more during the different entomological inspections performed at its place of introduction in Belgium between 2001 ... [more ▼]Since its first report in 2000, the invasive mosquito Aedes albopictus was not found any more during the different entomological inspections performed at its place of introduction in Belgium between 2001 and 2012. In July 2013, one adult male was captured at the same site (a platform of imported used tires located in Vrasene, Oost-Vlaanderen Province), during a monitoring using CO2-baited trap. This finding suggests the reintroduction of the species in Belgium via the used tire trade. [less ▲]Detailed reference viewed: 64 (19 ULg) Modeling of Wastewater Sludge Drying with Determination of Diffusivity MoistureBennamoun, Lyes ; Fraikin, Laurent ; Salmon, Thierry et alin Journal of Residuals Science and Technology [=JRST] (2013), 10(4), 165Detailed reference viewed: 7 (2 ULg) Influence of ovarian hormones on cortical spreading depression and its suppression by L-kynurenine in rat.Chauvel, Virginie ; Schoenen, Jean ; Multon, Sylvie in PLoS ONE (2013), 8(12), 82279Migraine is sexually dimorphic and associated in 20-30% of patients with an aura most likely caused by cortical spreading depression (CSD). We have previously shown that systemic L-kynurenine (L-KYN), the ... [more ▼]Migraine is sexually dimorphic and associated in 20-30% of patients with an aura most likely caused by cortical spreading depression (CSD). We have previously shown that systemic L-kynurenine (L-KYN), the precursor of kynurenic acid, suppresses CSD and that this effect depends on the stage of the estrous cycle in female rats. The objectives here are to determine the influence of ovarian hormones on KCl-induced CSD and its suppression after L-KYN by directly modulating estradiol or progesterone levels in ovariectomized rats. Adult female rats were ovariectomized and subcutaneously implanted with silastic capsules filled with progesterone or 17β-estradiol mixed with cholesterol, with cholesterol only or left empty. Two weeks after the ovariectomy/capsule implantation, the animals received an i.p. injection of L-KYN (300 mg/kg) or NaCl as control. Thirty minutes later CSDs were elicited by applying KCl over the occipital cortex and recorded by DC electrocorticogram for 1 hour. The results show that both estradiol and progesterone increase CSD frequency after ovariectomy. The suppressive effect of L-KYN on CSD frequency, previously reported in normal cycling females, is not found anymore after ovariectomy, but reappears after progesterone replacement therapy. Taken together, these results emphasize the complex role of sex hormones on cortical excitability. The CSD increase by estradiol and, more surprisingly, progesterone may explain why clinically migraine with aura appears or worsens during pregnancy or with combined hormonal treatments. [less ▲]Detailed reference viewed: 17 (10 ULg) La cloche Lovinfosse du Trésor de la Cathédrale de LiègeMarganne, Marie-Hélène ; Mélard, Marcin Bloc-Notes : Bulletin périodique du Trésor de la Cathédrale de Liège (2013), 37Examen de la cloche de bronze J.F. Lovinfosse 1818 provenant du Couvent des Filles de la Croix, rue Hors-Château, à Liège, et conservée au Trésor de la Cathédrale de Liège.Detailed reference viewed: 20 (6 ULg) Poly(acrylic acid)-block-poly(vinyl alcohol) anchored maghemite nanoparticles designed for multi-stimuli triggered drug releaseLiu, Ji ; Detrembleur, Christophe ; Debuigne, Antoine et alin Nanoscale (2013), 5(23), 11464-11477Original core/corona nanoparticles composed of amaghemite core and a stimuli-responsive polymer coating made of poly(acrylic acid)-block-poly(vinyl alcohol) macromolecules were fabricated for drug ... [more ▼]Original core/corona nanoparticles composed of amaghemite core and a stimuli-responsive polymer coating made of poly(acrylic acid)-block-poly(vinyl alcohol) macromolecules were fabricated for drug delivery system (DDS) application. This kind of DDS aims to combine the advantage of stimuli-responsive polymer coating, in order to regulate the drug release behaviours under different conditions and furthermore, improve the biocompatibility and in vivo circulation half-time of the maghemite nanoparticles. Drug loading capacity was evaluated with methylene blue (MB), a cationic model drug. The triggered release of MB was studied under various stimuli such as pH, ionic strength and temperature. Local heating generated under alternating magnetic field (AMF) application was studied, and remotely AMF-triggered release was also confirmed, while a mild heating-up of the release medium was observed. Furthermore, their potential application as magnetic resonance imaging (MRI) contrast agents was explored via relaxivity measurements and acquisition of T2-weighted images. Preliminary studies on the cytotoxicity against mouse fibroblast-like L929 cell line and also their cellular uptake within human melanoma MEL-5 cell line were carried out. In conclusion, this kind of stimuli-responsive nanoparticles appears to be promising carriers for delivering drugs to some tumour sites or into cellular compartments with an acidic environment. [less ▲]Detailed reference viewed: 28 (9 ULg) Pubertal timing after neonatal diethylstilbestrol exposure in female rats: Neuroendocrine vs peripheral effects and additive role of prenatal food restriction.Franssen, Delphine ; Ioannou, Yiannis S.; Alvarez-Real, Alexandra et alin Reproductive toxicology (Elmsford, N.Y.) (2013)We studied the effects of neonatal exposure to diethylstilbestrol (DES) on pubertal timing in female rats. We examined associated neuroendocrine changes and effects of prenatal food restriction. Age at ... [more ▼]We studied the effects of neonatal exposure to diethylstilbestrol (DES) on pubertal timing in female rats. We examined associated neuroendocrine changes and effects of prenatal food restriction. Age at vaginal opening was advanced after exposure to 10mug/kg/d of DES and delayed after 1mug/kg/d (subcutaneous injections). Using this lower dose, pulsatile GnRH secretion was slower at 25 days of age. Both doses reduced KiSS1 mRNA levels at 15 days of age. Using functional Kisspeptin promoter assay, 1 or 10muM DES reduced or increased KISS1 transcription, respectively. Leptin stimulatory effect on GnRH secretion in vitro (15 days of age) was reduced after prenatal food restriction and neonatal DES exposure (higher dose), both effects being cumulative. Thus, alterations in pubertal timing by DES neonatally are not unequivocally toward precocity, the level of exposure being critical. We provide evidence of neuroendocrine disruption and interaction with prenatal food availability. [less ▲]Detailed reference viewed: 9 (2 ULg) Inversion of a part of the numerator relationship matrix using pedigree informationFaux, Pierre ; Gengler, Nicolas in Genetics, Selection, Evolution [=GSE] (2013), 45Background. In recent theoretical developments, the information available (e.g. genotypes) divides the original population into two groups: animals with this information (selected animals) and animals ... [more ▼]Background. In recent theoretical developments, the information available (e.g. genotypes) divides the original population into two groups: animals with this information (selected animals) and animals without this information (excluded animals). These developments require inversion of the part of the pedigree-based numerator relationship matrix that describes the genetic covariance between selected animals (A22). Our main objective was to propose and evaluate methodology that takes advantage of any potential sparsity in the inverse of A22 in order to reduce the computing time required for its inversion. This potential sparsity is brought out by searching the pedigree for dependencies between the selected animals. Jointly, we expected distant ancestors to provide relationship ties that increase the density of matrix A22 but that their effect on A22i might be minor. This hypothesis was also tested. Methods. The inverse of A22 can be computed from the inverse of the triangular factor (T-1 ) obtained by Cholesky root-free decomposition of A22 . We propose an algorithm that sets up the sparsity pattern of T-1 using pedigree information. This algorithm provides positions of the elements of T-1 worth to be computed (i.e. different from zero). A recursive computation of A22i is then achieved with or without information on the sparsity pattern and time required for each computation was recorded. For three numbers of selected animals (4000; 8000 and 12 000), A22 was computed using different pedigree extractions and the closeness of the resulting A22i to the inverse computed using the fully extracted pedigree was measured by an appropriate norm. Results. The use of prior information on the sparsity of T-1 decreased the computing time for inversion by a factor of 1.73 on average. Computational issues and practical uses of the different algorithms were discussed. Cases involving more than 12 000 selected animals were considered. Inclusion of 10 generations was determined to be sufficient when computing A22. Conclusions. Depending on the size and structure of the selected sub-population, gains in time to compute A22 are possible and these gains may increase as the number of selected animals increases. Given the sequential nature of most computational steps, the proposed algorithm can benefit from optimization and may be convenient for genomic evaluations. [less ▲]Detailed reference viewed: 18 (9 ULg) Electroencephalogram approximate entropy influenced by both age and sleepLee, Gerick; Fattinger, Sara; Mouthon, Anne-Laure et alin Frontiers in Neuroinformatics (2013), 7(33), The use of information-based measures to assess changes in conscious state is an increasingly popular topic. Though recent results have seemed to justify the merits of such methods, little has been done ... [more ▼]The use of information-based measures to assess changes in conscious state is an increasingly popular topic. Though recent results have seemed to justify the merits of such methods, little has been done to investigate the applicability of such measures to children. For our work, we used the approximate entropy (ApEn), a measure previously shown to correlate with changes in conscious state when applied to the electroencephalogram (EEG), and sought to confirm whether previously reported trends in adult ApEn values across wake and sleep were present in children. Besides validating the prior findings that ApEn decreases from wake to sleep (including wake, rapid eye movement (REM) sleep, and non-REM sleep) in adults, we found that previously reported ApEn decreases across vigilance states in adults were also present in children (ApEn trends for both age groups: wake > REM sleep > non-REM sleep). When comparing ApEn values between age groups, adults had significantly larger ApEn values than children during wakefulness. After the application of an 8 Hz high-pass filter to the EEG signal, ApEn values were recalculated. The number of electrodes with significant vigilance state effects dropped from all 109 electrodes with the original 1 Hz filter to 1 electrode with the 8 Hz filter. The number of electrodes with significant age effects dropped from 10 to 4. Our results support the notion that ApEn can reliably distinguish between vigilance states, with low-frequency sleep-related oscillations implicated as the driver of changes between vigilance states. We suggest that the observed differences between adult and child ApEn values during wake may reflect differences in connectivity between age groups, a factor which may be important in the use of EEG to measure consciousness. [less ▲]Detailed reference viewed: 14 (2 ULg) Inactivation of genes coding for mitochondrial Nd7 and Nd9 complex I subunits in Chlamydomonas reinhardtii. Impact of complex I loss on respiration and energetic metabolism.Massoz, Simon; Larosa, Véronique ; Plancke, Charlotte et alin Mitochondrion (2013)In Chlamydomonas, unlike in flowering plants, genes coding for Nd7 (NAD7/49kDa) and Nd9 (NAD9/30kDa) core subunits of mitochondrial respiratory-chain complex I are nucleus-encoded. Both genes possess all ... [more ▼]In Chlamydomonas, unlike in flowering plants, genes coding for Nd7 (NAD7/49kDa) and Nd9 (NAD9/30kDa) core subunits of mitochondrial respiratory-chain complex I are nucleus-encoded. Both genes possess all the features that facilitate their expression and proper import of the polypeptides in mitochondria. By inactivating their expression by RNA interference or insertional mutagenesis, we show that both subunits are required for complex I assembly and activity. Inactivation of complex I impairs the cell growth rate, reduces the respiratory rate, leads to lower intracellular ROS production and lower expression of ROS scavenging enzymes, and is associated to a diminished capacity to concentrate CO2 without compromising photosynthetic capacity. [less ▲]Detailed reference viewed: 9 (2 ULg) On protocols and measures for the validation of supervised methods for the inference of biological networksSchrynemackers, Marie ; Kuffner, Robert; Geurts, Pierre in Frontiers in genetics (2013), 4(262), Networks provide a natural representation of molecular biology knowledge, in particular to model relationships between biological entities such as genes, proteins, drugs, or diseases. Because of the ... [more ▼]Networks provide a natural representation of molecular biology knowledge, in particular to model relationships between biological entities such as genes, proteins, drugs, or diseases. Because of the effort, the cost, or the lack of the experiments necessary for the elucidation of these networks, computational approaches for network inference have been frequently investigated in the literature. In this paper, we examine the assessment of supervised network inference. Supervised inference is based on machine learning techniques that infer the network from a training sample of known interacting and possibly non-interacting entities and additional measurement data. While these methods are very effective, their reliable validation in silico poses a challenge, since both prediction and validation need to be performed on the basis of the same partially known network. Cross-validation techniques need to be specifically adapted to classification problems on pairs of objects. We perform a critical review and assessment of protocols and measures proposed in the literature and derive specific guidelines how to best exploit and evaluate machine learning techniques for network inference. Through theoretical considerations and in silico experiments, we analyze in depth how important factors influence the outcome of performance estimation. These factors include the amount of information available for the interacting entities, the sparsity and topology of biological networks, and the lack of experimentally verified non-interacting pairs. [less ▲]Detailed reference viewed: 23 (10 ULg) Preliminary description of the diet of Hippopotamus amphibius L. in Loango National Park (Gabon)Michez, Adrien ; Doucet, Jean-Louis ; Dendocker, Nicolas et alin Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2013), 17(4), Due to the paucity of suitable habitat, hippos are very rare in the Congo Bassin. Compared to East-African populations, Central African populations of hippos have been less studied. Information found in ... [more ▼]Due to the paucity of suitable habitat, hippos are very rare in the Congo Bassin. Compared to East-African populations, Central African populations of hippos have been less studied. Information found in the literature regarding the animal’s basic ecology is limited. This study focuses on the description of the diet of an isolated hippo population in Loango National Park (Gabon), comparing faecal analysis with a reference collection ofherbaceous species from the savannas. The effectiveness of using faecal analysis versus using the floristic description of hippos’ pastures was demonstrated. The most frequent herbaceous species identified in faeces samples were Paspalum vaginatum, Axonopus compressus, Stenotaphrum secundatum (Poaceae) and Desmodium triflorum (Fabaceae). The voluntary consumption of a dicotyledonous species (Desmodium triflorum) is novel for this species. [less ▲]Detailed reference viewed: 46 (22 ULg) WR 138: new results from X-ray and optical spectroscopyPalate, Matthieu ; Rauw, Grégor ; De Becker, Michaël et alin Astronomy and Astrophysics (2013), 560Massive-binary evolution models predict that some systems will go through an evolutionary phase where the original primary has become a supernova and left a compact object behind that then orbits a Wolf ... [more ▼]Massive-binary evolution models predict that some systems will go through an evolutionary phase where the original primary has become a supernova and left a compact object behind that then orbits a Wolf-Rayet (WR) star. WR 138 is an X-ray bright WR star that has been described as a triple system, including a compact companion in a short-period orbit. Our goal is to search for spectroscopic evidence of a compact companion around WR 138. We used optical and X-ray spectra to search for signatures of a compact companion, which can be revealed by systematic variations in WR optical spectral lines induced by orbital motion of the compact companion or by hard, luminous X-rays from accretion onto this companion. The optical spectra display emission-line profile variations that are most probably caused by clumps inside the stellar winds. The radial velocities do not vary on a short time-scale compatible with the suggested orbital period of a putative compact companion. The X-ray spectra are found to be normal for a WN5-6+OB system with no indication of accretion by a compact companion. There is no evidence for the presence of a compact companion, and we therefore conclude that WR 138 is a normal long-period (P ~ 1521 d) eccentric WR+OB system. [less ▲]Detailed reference viewed: 5 (1 ULg) La Deuxième Guerre mondiale aurait-elle eu un impact sur la population rwandaise? Regard sur l'historiographie de ce tournant historiqueSingiza, Dantès in Bulletin d'Information de l'Association Belge d'Histoire Contemporaine = Mededelingenblad van de Belgische Vereniging voor Nieuwste Geschiedenis (2013), Numéro 4Detailed reference viewed: 11 (0 ULg) Physical properties and transmission spectrum of the WASP-80 planetary system from multi-colour photometryMancini, L.; Southworth, J.; Ciceri, S. et alin Astronomy and Astrophysics (2013), 1312WASP-80 is one of only two systems known to contain a hot Jupiter which transits its M-dwarf host star. We present eight light curves of one transit event, obtained simultaneously using two defocussed ... [more ▼]WASP-80 is one of only two systems known to contain a hot Jupiter which transits its M-dwarf host star. We present eight light curves of one transit event, obtained simultaneously using two defocussed telescopes. These data were taken through the Bessell I, Sloan griz and near-infrared JHK passbands. We use our data to search for opacity-induced changes in the planetary radius, but find that all values agree with each other. Our data are therefore consistent with a flat transmission spectrum to within the observational uncertainties. We also measure an activity index of the host star of log R'_HK=-4.495, meaning that WASP-80A shows strong chromospheric activity. The non-detection of starspots implies that, if they exist, they must be small and symmetrically distributed on the stellar surface. We model all available optical transit light curves to obtain improved physical properties and orbital ephemerides for the system. [less ▲]Detailed reference viewed: 6 (0 ULg) A Photometric Study of the Hot Exoplanet WASP-19bLendl, M.; Gillon, Michaël ; Queloz, D. et alin Astronomy and Astrophysics (2013), 552Context. The sample of hot Jupiters that have been studied in great detail is still growing. In particular, when the planet transits its host star, it is possible to measure the planetary radius and the ... [more ▼]Context. The sample of hot Jupiters that have been studied in great detail is still growing. In particular, when the planet transits its host star, it is possible to measure the planetary radius and the planet mass (with radial velocity data). For the study of planetary atmospheres, it is essential to obtain transit and occultation measurements at multiple wavelengths. Aims: We aim to characterize the transiting hot Jupiter WASP-19b by deriving accurate and precise planetary parameters from a dedicated observing campaign of transits and occultations. Methods: We have obtained a total of 14 transit lightcurves in the r'-Gunn, I-Cousins, z'-Gunn, and I + z' filters and 10 occultation lightcurves in z'-Gunn using EulerCam on the Euler-Swiss telescope and TRAPPIST. We also obtained one lightcurve through the narrow-band NB1190 filter of HAWK-I on the VLT measuring an occultation at 1.19 μm. We performed a global MCMC analysis of all new data, together with some archive data in order to refine the planetary parameters and to measure the occultation depths in z'-band and at 1.19 μm. Results: We measure a planetary radius of Rp = 1.376 ± 0.046 RJ, a planetary mass of Mp = 1.165 ± 0.068 MJ, and find a very low eccentricity of e = 0.0077-0.0032+0.0068, compatible with a circular orbit. We have detected the z'-band occultation at 3σ significance and measure it to be δFocc,z' = 352 ± 116 ppm, more than a factor of 2 smaller than previously published. The occultation at 1.19 μm is only marginally constrained at δFocc,NB1190 = 1711-726+745 ppm. Conclusions: We show that the detection of occultations in the visible range is within reach, even for 1 m class telescopes if a considerable number of individual events are observed. Our results suggest an oxygen-dominated atmosphere of WASP-19b, making the planet an interesting test case for oxygen-rich planets without temperature inversion. [less ▲]Detailed reference viewed: 29 (3 ULg) Early-type stars observed in the ESO UVES Paranal Observatory Project - IV. Studies of CN, CH+ and CH in the interstellar mediumSmoker, J.; Ledoux, C.; Jehin, Emmanuel et alin Monthly Notices of the Royal Astronomical Society (2013)High spectral resolution (˜80 000) and signal-to-noise observations from the Ultraviolet and Visual Echelle Spectrograph Paranal Observatory Project (UVES-POP) are used to study the interstellar molecular ... [more ▼]High spectral resolution (˜80 000) and signal-to-noise observations from the Ultraviolet and Visual Echelle Spectrograph Paranal Observatory Project (UVES-POP) are used to study the interstellar molecular lines CN (3874 Å), CH[SUP]+[/SUP] (3957, 4232 Å) and CH (3886, 4300 Å) towards 74 O- and B-type stellar sightlines. Additionally, archive data are presented for 140 ELODIE early-type stellar sightlines at R = 42 000, plus 25 FEROS at R = 48 000 and 3 UVES at R > 50 000, mainly in the CH[SUP]+[/SUP] (4232 Å) and CH (3886, 4300 Å) transitions. Detection rates are ˜45 per cent for CN and ˜67 per cent for the other lines in the POP sample, and ˜10-15 per cent for CH[SUP]+[/SUP] and CH lines in the additional sample. CH and CH[SUP]+[/SUP] are well correlated between log[N(CH) cm[SUP]-2[/SUP]]˜12-14, implying that these clouds are CH[SUP]+[/SUP]-like CH and not CN-like CH. CH is also very well correlated with Na I D in the range log[N(Na I cm[SUP]-2[/SUP]]) ˜12.2-14.2. A few sightlines show tentative velocity shifts of ˜2 km s[SUP]-1[/SUP] between CH and CH[SUP]+[/SUP], which appear to be caused by differences in component strength in blends, and hence do not provide firm evidence for shocks. Finally, we describe a search for [SUP]13[/SUP]CH[SUP]+[/SUP] in a sightline towards HD 76341. No [SUP]13[/SUP]CH[SUP]+[/SUP] is detected, placing a limit on the [SUP]13[/SUP]CH[SUP]+[/SUP] to [SUP]12[/SUP]CH[SUP]+[/SUP] ratio of ˜0.01. If a formal fit is attempted, the equivalent width ratio in the two isotopes is a factor ˜90 but with large errors. [less ▲]Detailed reference viewed: 3 (0 ULg) Connection between cardiac vascular permeability, myocardial oedema and inflammation during sepsis: role of the alpha1AMPK isoformCastanares-Zapatero, Diego; Bouleti, C; Sommereyns, C et alin Critical Care Medicine (2013), 41(12), 411-22Objective: Since AMP-activated protein kinase (AMPK) both controls cytoskeletonorganization in endothelial cells (ECs) and exerts anti-inflammatory effects, we here postulated that it could influence ... [more ▼]Objective: Since AMP-activated protein kinase (AMPK) both controls cytoskeletonorganization in endothelial cells (ECs) and exerts anti-inflammatory effects, we here postulated that it could influence vascular permeability and inflammation, thereby counteracting cardiac wall oedema during sepsis. Design: Controlled animal study Settings: University research laboratory Subjects: C57BL/6J, α1AMPK-/- and α1AMPK+/+ mice Intervention: Sepsis was triggered in vivo using a sub-lethal injection of lipopolysaccharide (LPS, O55B5, 10 mg.kg-1), inducing systolic left ventricular (LV) dysfunction. LV function, oedema, vascular permeability and inflammation were assessed in vivo in both wild type (WT) mice (α1AMPK+/+) and α1AMPK-deficient mice (α1AMPK-/-). 5-Aminoimidazole-4-carboxamide riboside (AICAr) served to study the impact of AMPK activation on vascular permeability in vivo. The integrity of EC monolayers was also examined in vitro after LPS challenge in the presence of AICAr and/or after α1AMPK silencing. Measurements and main results: α1AMPK-deficiency dramatically impaired tolerance to LPS challenge. Indeed, α1AMPK-/- exhibited heightened cardiac vascular permeability after LPS challenge compared to α1AMPK+/+. Consequently, an increase in LV mass corresponding to exaggerated wall oedema occurred in α1AMPK-/-, without any further decrease in systolic function. Mechanistically, the LPS-induced α1AMPK-/- cardiac phenotype could not be attributed to major changes in the systemic inflammatory response, but was due to an increased disruption of interendothelial tight junctions. Accordingly, AMPK activation by AICAr counteracted LPS-induced hyperpermeability in WT mice in vivo as well as in ECs in vitro. This effect was associated with a potent protection of ZO-1 linear border pattern in ECs. Conclusions: Our results demonstrate, for the first time the involvement of a signalling pathway in the control of LV wall oedema during sepsis. AMPK exerts a protective action through the preservation of interendothelial tight junctions. Interestingly, exaggerated LV wall oedema was not coupled with aggravated systolic dysfunction. However, it could contribute to diastolic dysfunction in septic patients. [less ▲]Detailed reference viewed: 20 (5 ULg) A Review of the Empirical Research in Management Control, Strategy and SustainabilityCrutzen, Nathalie ; Herzig, Christianin Studies in Managerial and Financial Accounting (2013), 26Detailed reference viewed: 30 (11 ULg) Constructing practice on evolutionary knowledge in ECECPirard, Florence in Nordisk Barnehageforskning 2013 (Nordic Early Childhood Education Research) (2013), 6(28), 1-7This article provides a discussion on the importance of knowledge in early childhood education and also the role of knowledge dissemination process in the field. From the question of giving more freedom ... [more ▼]This article provides a discussion on the importance of knowledge in early childhood education and also the role of knowledge dissemination process in the field. From the question of giving more freedom of movement, knowledge about this topic used in a Belgian curriculum, the article illustrates the importance of considering practice not as an application of theory, but as a co-construct and complex process that combines it with other resources in context. It illustrates the importance of going further than the production of knowledge to create appropriate practice in service. [less ▲]Detailed reference viewed: 12 (0 ULg) La théorie du cinéma d'Alexander Kluge, entre fiction et documentaire. Kluge, Adorno, BlochCormann, Grégory ; Hamers, Jérémy in Cahiers du GRM (2013)Detailed reference viewed: 28 (8 ULg) Un siècle de physiognomonieStienon, Valérie ; Wicky, Érikain Etudes Françaises (2013), 49(3), 5-14Produit syncrétique et protéiforme d’une très longue histoire, la physiognomonie remonte au moins au Pseudo-Aristote (IVe-IIIe siècle av. J.-C.). Très tôt, l’essentiel est déjà posé : il s’agit de ... [more ▼]Produit syncrétique et protéiforme d’une très longue histoire, la physiognomonie remonte au moins au Pseudo-Aristote (IVe-IIIe siècle av. J.-C.). Très tôt, l’essentiel est déjà posé : il s’agit de considérer les manifestations physiques de l’âme. À la faveur des XVIe et XVIIe siècles, cette étude se précise avec l’association de telle détermination somatique à telle spécificité de caractère, fondant l’explication des moeurs des hommes par des traits corporels considérés comme autant de signes à interpréter. Une distinction vient ensuite faire le départ entre les caractéristiques fixes du corps et du caractère, et leurs aspects mutables. À la fin du XVIIIe siècle, sous l’influence du sensualisme et après l’étude des passions qui avait occupé le siècle classique, cette distinction fonde la séparation entre une physiognomonie au sens restreint et une pathognomonie consacrée à l’étude des signes physiques traduisant le caractère en mouvement et les signes fugitifs de l’expression humaine. La suite de cette histoire, au XIXe siècle, fait l’objet du présent numéro d’Études françaises, qui remet en perspective les formes et les influences de la physiognomonie à ce moment stratégique de son développement. Le bouleversement des hiérarchies socio-culturelles et l’industrialisation des objets socialement distinctifs (vêtements, bijoux, cannes, ombrelles, etc.) ont certainement contribué à accentuer l’intérêt pour la physiognomonie en rendant indispensable la maîtrise d’un certain savoir social. Mais l’engouement qu’elle suscite se caractérise surtout, à ce moment, par la création de foyers institutionnels spécifiques qui la dotent d’un ancrage dans des associations scientifiques, des cercles intellectuels et des organes de presse. Il s’agira donc, indissociablement, de comprendre les raisons d’un succès et d’examiner les reconfigurations d’un héritage. [less ▲]Detailed reference viewed: 16 (0 ULg) Breeding sites and species association of the main Bluetongue and Schmallenberg virus vectors, the Culicoides species (Diptera: Ceratopogonidae), in northern EuropeZimmer, Jean-Yves ; Losson, Bertrand ; Saegerman, Claude et alin Annales de la Société Entomologique de France (2013), 49(3), 335-344Several species of Culicoides (Diptera: Ceratopogonidae) biting midges are biological vectors of bluetongue virus (BTV) and, as recently discovered, Schmallenberg virus (SBV) in northern Europe. Since ... [more ▼]Several species of Culicoides (Diptera: Ceratopogonidae) biting midges are biological vectors of bluetongue virus (BTV) and, as recently discovered, Schmallenberg virus (SBV) in northern Europe. Since their recent emergence in this part of the continent, these diseases that affect domestic and wild ruminants have caused considerable economic losses to the sheep and cattle industries. The substrates that are suitable for larval development of the main vector species are still relatively unknown. This study assessed all the substrates present in the immediate surroundings of a Belgian cattle farm and aimed to highlight the main breeding sites of these midge species. A total of 1639 immature Culicoides and 1320 adult specimens belonging to 13 species were found in 15 out of the 43 substrates studied: maize silage residues for C. obsoletus/C. scoticus, old overwintered cattle dung in the meadow for C. chiopterus and C. dewulfi, ground of a flooded meadow, green filamentous algae and underlying substrate, silt from a pond, and ground of hollows caused by the crossing of machines on a dirt track for C. festivipennis, silt from a pond for C. nubeculosus, and ground of a flooded meadow for C. lupicaris. Identification of these micro-habitats and the associations among the species they contain could allow their localization and the development of new strategies of vector control, while preventing the creation of new Culicoides larval micro-habitats. Finally, measures designed to reduce larval populations could improve efficacy of vaccination campaigns against BTV in Europe. [less ▲]Detailed reference viewed: 13 (0 ULg) Effect of different kinds of anoxia/reoxygenation on the mitochondrial function and the free radicals production of cultured primary equine skeletal myoblasts.Ceusters, Justine ; Mouithys-Mickalad, Ange ; Franck, Thierry et alin Research in Veterinary Science (2013), 95Horses are outstanding athletes, performing in many different disciplines involving different kinds of efforts and metabolic responses. Depending on exercise intensity, their skeletal muscle oxygenation ... [more ▼]Horses are outstanding athletes, performing in many different disciplines involving different kinds of efforts and metabolic responses. Depending on exercise intensity, their skeletal muscle oxygenation decreases, and the reperfusion at cessation of the exercise can cause excessive production of free radicals. This study on cultured primary equine myoblasts investigated the effect of different kinds of anoxia/reoxygenation (A/R) on routine respiration, mitochondrial complex I specific activity and free radicals production. Our data revealed that short cycles of A/R caused a decrease of all the parameters, opposite to what a single long period of anoxia did. A preconditioning-like effect could explain our first pattern of results whereas mild uncoupling could be more appropriate for the second one. Anyway, it seems that mitochondrial complex I could play a major role in the regulation of the balance between metabolic and antioxidant protection of the muscular function of athletic horses. [less ▲]Detailed reference viewed: 18 (3 ULg) Peptidomic comparison and characterization of the major components of the venom of the giant ant Dinoponera quadriceps collected in four different areas of Brazil.Cologna, Camila Takeno; Cardoso, Jaqueline Dos Santos; Jourdan, Emmanuel et alin Journal of Proteomics (2013), 94Despite the noxious effects inflicted by Dinoponera ant's envenomation, the information about the biological properties and composition of their venom is still very limited. Ants from the genus Dinoponera ... [more ▼]Despite the noxious effects inflicted by Dinoponera ant's envenomation, the information about the biological properties and composition of their venom is still very limited. Ants from the genus Dinoponera are believed to be the world's largest living ants with a body length of 3cm. Their occurrence is restricted to tropical areas of South America. In this work, we study the venom of the giant Dinoponera quadriceps ant collected in 4 different regions of Brazil. By using a combination of complementary mass spectrometric approaches, we aim at: (i) characterizing the venom composition of these ants; (ii) establishing a comparative analysis of the venom from four geographically different regions in Brazil. This approach demonstrates that ant venom is a copious source of new compounds. Several peptides were identified and selected for "de novo sequencing". Since most of the new peptides showed similarities with antimicrobial peptides (AMPs), antimicrobial assays were performed with the purpose of evaluating their activity. In regard to the comparative study of the four regions, we observed not only major differences in the venom compositions, but also that the venoms collected in closest areas are more similar than the ones collected in distant regions. These observations seem to highlight an adaption of the ant venoms to the local environment. Concerning the biological assays, the peptides called Dq-3162 and Da-3177 showed a wide-ranging antimicrobial activity. The characterization of new AMPs with a broad spectrum of activity and different scaffolds may aid scientists to design new therapeutic agents and understand the mechanisms of those peptides to interact with microbial membranes. The results obtained betoken the biotechnological potential of ant's venom. BIOLOGICAL SIGNIFICANCE: For the first time this manuscript describes an extensive proteomics characterization of the D. quadriceps venom. In addition this study reports the variation in venom composition of primitive ants from 4 geographically different areas of Brazil. The results reveal the presence of ~335 compounds for each venom/area and inter-colony variations were observed. 16 new peptides were characterized and 2 of them were synthesized and biologically assayed. These findings highlight the considerable and still unexplored diversity of ant's venom which could be used as valuable research tools in different areas of knowledge. [less ▲]Detailed reference viewed: 8 (0 ULg) Ce cavernome cérébral est-il la cause d'un syndrome parkinsonien ?Benmouna, Karim; DIVE, Dominique ; WANG, François-Charles et alin Revue Médicale de Liège (2013), 68(12), 613-616We report the case of a patient presenting with an akineto-rigid syndrome of the left hemibody whose etiological exploration by magnetic resonance imaging showed the presence of a cavernoma located in the ... [more ▼]We report the case of a patient presenting with an akineto-rigid syndrome of the left hemibody whose etiological exploration by magnetic resonance imaging showed the presence of a cavernoma located in the right lenticular region. The interest of this situation lies in establishing whether pathophysiological link may exist between such symptoms and the lesion. [less ▲]Detailed reference viewed: 137 (17 ULg) Microbial, biochemical and sensorial quality assessment of Algerian farmed tilapia (Oreochromis niloticus) stored at 4 and 30°CDergal, Nadir; Abi-Ayad, S.M.E.-A.; Degand, Guy et alin African Journal of Food Science (2013), 7(12), 498-507Detailed reference viewed: 34 (7 ULg) EBP : grille de mots croisésDurieux, Nancy ; Martinez Perez, Trecy in Cahiers de l'ASELF (2013), 10(4), 30-3136Detailed reference viewed: 31 (7 ULg) La magie et la sorcellerie des visages comme socle anthropologique de la philosophie sartrienneEnglebert, Jérôme in Etudes Sartriennes (2013), 17L’« émotion » est la possibilité d’une « anthropologie de la relation ». Énoncer une telle proposition nécessite de définir les deux blocs qu’elle relie. Nous réaliserons cette entreprise en recourant à ... [more ▼]L’« émotion » est la possibilité d’une « anthropologie de la relation ». Énoncer une telle proposition nécessite de définir les deux blocs qu’elle relie. Nous réaliserons cette entreprise en recourant à un troisième axe, intermédiaire : celui du visage ou, plutôt, des visages. La thèse de ce court essai tient à considérer que la phénoménologie sartrienne a déjà réalisé ce travail de fond qui requiert, pour le rendre explicite, articulation simple et ordonnancement. [less ▲]Detailed reference viewed: 36 (6 ULg) Analyse des perspectives de rentabilité de la culture extensive de Jatropha curcas L. dans la zone agroécologique de transition orientale du Sénégal : cas de la communauté rurale de DialacotoTerren, Marieke ; Cissé, Chérif; Mergeai, Guy in Cahiers d'Etudes et de Recherches Francophones. Agricultures (2013), 22(6), 568-574The profitability prospects of the three main modes of extensive cultivation of Jatropha curcas L. in the Rural Community of Dialacoto were studied on 24 farms from 2008 to 2012. In the best tended ... [more ▼]The profitability prospects of the three main modes of extensive cultivation of Jatropha curcas L. in the Rural Community of Dialacoto were studied on 24 farms from 2008 to 2012. In the best tended peasant plantations aged four or five years the dry seed yield obtained in sole cropping was less than 200 kg/ha. Under these conditions, it is very unlikely that the yield achieved in sole cropping exceeds 800 kg/ha in full production. The average yield per meter of live fences older than fifteen years was 0.9 kg/m. Considering the purchase price of jatropha seeds in 2012 in Senegal (65 F CFA/kg – 0.1 euro/kg), and given the bad productivity and the low precocity of the available planting material, the cultivation of jatropha (as a sole crop or in intercropping) is far less profitable than the main cropping system practiced in the region (groundnut/pearl millet/sorghum/cotton rotation with input application). Any improvement in the economic performance of the production of jatropha seeds requires the selection of varieties that are early, hardy and productive. The establishment of living hedges is for the moment the only installation method that can be recommended to farmers. In addition to providing supplementary income related to seed harvest, hedgerows provide different non-monetary benefits appreciated by farmers: land demarcation, soil protection against wind and water erosion, improved soil water balance and windbreak effect favourable to crop development, crop protection against wandering ruminants, and enclosure for the cattle. [less ▲]Detailed reference viewed: 10 (2 ULg) Diabète et nutrition artificielle : principes de prise en chargeQuilliot, Didier; Malgras, Aurélie; PAQUOT, Nicolas et alin Nutrition Clinique et Metabolisme (2013), 27(4), 230-235At home as in the hospital, the diabetic patients are at high risk of malnutrition. In patients with hyperglycemia in artificial nutrition, the primary objective is to to cover their protein needs and ... [more ▼]At home as in the hospital, the diabetic patients are at high risk of malnutrition. In patients with hyperglycemia in artificial nutrition, the primary objective is to to cover their protein needs and their caloric needs and to optimize accordingly the antidiabetic treatment. Insulin therapy is the treatment of choice. The use of low glycaemic index is probably better, especially for oral supplementation. An equivalent parenteral carbohydrate intake has a hyperglycaemic effect more important than with the oral or enteral way. The management of hyperglycemia in artificial nutrition requires defining glycemic goals, tailored to the patient, to the type and the sequences of artificial nutrition, establishing patterns of insulin therapy and providing accurate adaptation rules. Above the basal requirement, insulin therapy sufficient to meet caloric exposure must be prescribed appropriate in timing with the artificial nutrition. The use of sliding scale as monotherapy is ineffective. This management requires forming the nurse team. The acute phase has passed, the disease stabilized, it is sometimes possible to introduce oral antidiabetic drugs and stop insulin. In this case, we apply the same prescription rules to these drugs as for the patient fed orally. [less ▲]Detailed reference viewed: 22 (0 ULg) Déploiement de la solution discovery Primo à l'Université de LiègeRenaville, François ; Richelle, Laurence in Cahiers de la Documentation = Bladen voor Documentatie (2013), (4), 41-53En quelques années, les Bibliothèques de l'Université de Liège (ULg) ont procédé à d'importants changements dans les systèmes documentaires informatisés qu'elles exploitent (SIGB, OPAC, résolveur de liens ... [more ▼]En quelques années, les Bibliothèques de l'Université de Liège (ULg) ont procédé à d'importants changements dans les systèmes documentaires informatisés qu'elles exploitent (SIGB, OPAC, résolveur de liens, plate-forme PIB…). Cet article retrace le passage, en 2013, d’un OPAC traditionnel à une "solution discovery". L'équipe de projet propose une analyse des étapes qui ont précédé la mise en œuvre de la solution Primo, dans ses différents aspects historique, technique et humain. La campagne de communication en interne, au moyen principalement de séances de formation, est également abordée. [less ▲]Detailed reference viewed: 88 (15 ULg) RECOMMANDATIONS EUROPÉENNES POUR LA PRISE EN CHARGE DU DIABÈTE, DU PRÉ-DIABÈTE ET DES MALADIES CARDIO-VASCULAIRES 2ème partie. Gestion des complications cardiaques, cérébro-vasculaires et artériopathiques périphériquesSCHEEN, André ; LANCELLOTTI, Patrizio in Revue Médicale de Liège (2013), 68(12), 617-624Summary : Patients with prediabetes (dysglycaemia) or diabetes present accelerated atherosclerosis that predisposes them to multiple cardiovascular complications. We summarize here the joint ... [more ▼]Summary : Patients with prediabetes (dysglycaemia) or diabetes present accelerated atherosclerosis that predisposes them to multiple cardiovascular complications. We summarize here the joint recommendations recently published by the European Society of Cardiology and the European Society for the Study of Diabetes. The management of main risk factors, aiming to optimize primary or secondary prevention, has been developed in a first article. This second article is focusing on the management of cardiac, cerebrovascular and peripheral arteriopathic complications. The importance of an individualized patient-centered strategy is emphasized, including the management of microangiopathies and, ideally, within a multidisciplinary approach. [less ▲]Detailed reference viewed: 13 (0 ULg) Family Members of Patients with Abdominal Aortic Aneurysms are at Increased Risk for Aneurysms: Analysis of 618 Probands and their Families from the Liege AAA Family Study.SAKALIHASAN, Natzi ; Defraigne, Jean-Olivier ; Kerstenne, Marie-Ange et alin Annals of vascular surgery (2013), doi: 10.1016/j.avsg.2013.11.005.BACKGROUND: The objectives were to answer the following questions using a well-characterized population in Liege, Belgium: 1) what percentage of abdominal aortic aneurysm (AAA) patients have a positive ... [more ▼]BACKGROUND: The objectives were to answer the following questions using a well-characterized population in Liege, Belgium: 1) what percentage of abdominal aortic aneurysm (AAA) patients have a positive family history for AAA, 2) what is the prevalence of AAAs among relatives of AAA patients; and 3) do familial and sporadic AAA cases differ in clinical characteristics. METHODS AND RESULTS: Unrelated AAA patients diagnosed at the Cardiovascular Surgery Department, University Hospital of Liege, Belgium, between 1999 and 2012 were invited to the study. A detailed family history was obtained in interviews and recorded using Progeny software. In the initial interview 62 (10%) of the 618 AAA patients reported a positive family history for AAA. We divided the 618 patients into two study groups: Group I: 296 AAA patients (268; 91% males) were followed up with computerized tomography combined with positron emission tomography, and Group II: 322 AAA patients (295; 92% males) whose families were invited to ultrasonography screening. Ultrasonography screening identified 24 new AAAs among 186 relatives (>/= 50 years) of 144 families yielding a prevalence of 13%. The highest prevalence (25%) was found among brothers. By combining the number of AAAs found by ultrasonography screening with those diagnosed previously the observed lifetime prevalence of AAA was estimated to be 32% in brothers. The familial AAA cases were more likely to have a ruptured AAA than the sporadic cases (8% vs. 2.4%; P<0.0001). CONCLUSIONS: The findings confirm previously found high prevalence of AAA among brothers, support genetic contribution to AAA pathogenesis and provide rationale for targeted screening of relatives of AAA patients. [less ▲]Detailed reference viewed: 16 (6 ULg) "La perte des avantages matrimoniaux pour cause d'indignité"Moreau, Pierre in Revue du Notariat Belge (2013), (3080), 810-832Detailed reference viewed: 33 (1 ULg) Performances of Volume Phase Holographic grating for space applications: study of the radiation effectLoicq, Jerôme ; Georges, Marc ; Stockman, Yvan et alin Journal of Applied Physics (2013), 52(34), The special properties of volume phase holographic gratings make them promising candidates for spectrometry applications where high spectral resolution, low levels of straylight, and low polarization ... [more ▼]The special properties of volume phase holographic gratings make them promising candidates for spectrometry applications where high spectral resolution, low levels of straylight, and low polarization sensitivity are required. Therefore it is of interest to assess the maturity and suitability of volume phase holographic gratings as enabling technologies for future space missions, with demanding requirements for spectrometry. One of the main areas of research is related to grating ageing under space radiation. In the present paper, two volume grating technologies are analyzed and compared under gamma irradiation. The performances of both technologies, the photo–thermo–refractive glass and the Dichromated Gelatin, are tested on samples and assessed in the and near-infrared bands. The diffraction efficiency degradation under gamma irradiation is assessed. [less ▲]Detailed reference viewed: 17 (4 ULg) Expanding the CHARA/FLUOR hot disk surveyMennesson, B.; Scott, N.; Ten Brummelaar, T. et alin Journal of Astronomical Instrumentation (2013), 2(2), 1340010Little is presently known about the hot (>300 K) dust component of debris disks surrounding main sequence stars, similar to the zodiacal dust cloud found in the inner solar system.While extensive surveys ... [more ▼]Little is presently known about the hot (>300 K) dust component of debris disks surrounding main sequence stars, similar to the zodiacal dust cloud found in the inner solar system.While extensive surveys have been carried out from space, the majority of detections have surprisingly come from the ground, where near infrared interferometric observations have recently revealed small (∼1%) resolved excesses around a dozen nearby main sequence stars. Most of these results have come from the CHARA array “FLUOR” instrument (Mt. Wilson, CA), which has demonstrated the best sensitivity worldwide so far for this type of studies, and has carried out an initial survey of ∼40 stars. In order to further understand the origin of this “hot dust phenomenon”, we will extend this initial survey to a larger number of stars and lower excess detection limits, i.e. higher visibility accuracy providing higher contrast measurements. To this end, two major instrumental developments are underway at CHARA. The first one aims at improving FLUOR’s sensitivity to a median K-band magnitude limit of 5 (making 200 targets available). The second development is based on a method that we recently developed for accurate (better than 0.1%) null depth measurements of stars, and that can be extended to regular interferometric visibility measurements. [less ▲]Detailed reference viewed: 6 (0 ULg) Anisotropy preserving DTI processingCollard, Anne ; Bonnabel, Silvère; Phillips, Christophe et alin International Journal of Computer Vision (2013)Detailed reference viewed: 22 (6 ULg) Effect of non-sperm cells removal with single layer colloidal centrifugation on myeloperoxidase concentration in post-thaw equine semenPonthier, Jérôme ; Teague, Sheila; Franck, Thierry et alin Theriogenology (2013), 80(9), 1082-1087Myeloperoxidase (MPO) is a pro-oxidant enzyme contained in, and released by, neutrophils during degranulation or after lysis. Post-thaw semen contains MPO and its concentration is associated with ... [more ▼]Myeloperoxidase (MPO) is a pro-oxidant enzyme contained in, and released by, neutrophils during degranulation or after lysis. Post-thaw semen contains MPO and its concentration is associated with decreased sperm motility. Recently, MPO concentration in post-thaw semen was shown to be associated with presence of non-sperm cells. The aim of this study was to describe the effect of centrifugal fractionation of semen prior to cryopreservation on post-thaw concentrations of non-sperm cells and MPO. The experimental design consisted in freezing semen with or without previous centrifugation through two concentrations of single layer colloid media. Non-sperm cells and MPO concentrations were assessed in pellet and upper layer at each step of the procedure and MPO was detected in cells by immunocytochemistry. Single layer colloid centrifugation decreased non-sperm cells and MPO concentrations in post-thaw semen. The MPO concentration was correlated with concentration of non-sperm cells in the upper layer of the supernatant. In post-thaw semen, with or without previous single layer colloid centrifugation, MPO concentration was correlated with concentration of non-sperm cells. Overall, neutrophils were rarely observed and non-sperm cells were mainly epithelial cells or cellular debris, as demonstrated by MPO immunocytochemistry. Following single layer colloid centrifugation, MPO concentration was decreased, and correlations observed in different samples of the experiments revealed an association between concentrations of MPO and non-sperm cells. At all steps of the semen processing and cryopreservation, MPO immunostaining was clearly identified only on non-sperm cells. Our results demonstrate that non-sperm cells present in fresh semen release MPO during freezing. [less ▲]Detailed reference viewed: 31 (11 ULg) Local head-loss coefficient at the rectangular transition from a free-surface channel to a conduitVan Nam, Nguyen; Archambeau, Pierre ; Dewals, Benjamin et alin Journal of Hydraulic Engineering (2013), 139(12), 1318-1323Experimental tests have been performed to observe and determine, in stationary flow conditions, the local head loss at the transition from a free surface channel to a conduit. These investigations ... [more ▼]Experimental tests have been performed to observe and determine, in stationary flow conditions, the local head loss at the transition from a free surface channel to a conduit. These investigations considered a wide range of discharge and varied dimensions and positions of a rectangular cross section conduit connected to the downstream extremity of a rectangular free surface channel. From the head loss evaluation results, simple analytical expressions to predict the local head loss coefficient value at the rectangular transition from a channel to a conduit are proposed and validated. [less ▲]Detailed reference viewed: 30 (10 ULg) Retour d'expérience sur le robot de traite mobileLessire, Françoise ; Knapp, Emilie ; Dufrasne, Isabelle in Point Vétérinaire (2013), 341Using a mobile robot to milk grazing cows influences their milk yield. Several factors influencing mik production are described in this paper as is their relative impact on the production.Detailed reference viewed: 14 (0 ULg) Dosimétrie vocale chez des enseignantes des niveaux maternel et primaireRemacle, Angélique ; Morsomme, Dominique ; FINCK, Camille in Cahiers de l'ASELF (2013), 10(4), 14-29Objectifs - Cette étude quantifie l’usage vocal professionnel et extra-professionnel chez des enseignantes en différenciant deux niveaux scolaires : le maternel et le primaire. L’objectif est d’identifier ... [more ▼]Objectifs - Cette étude quantifie l’usage vocal professionnel et extra-professionnel chez des enseignantes en différenciant deux niveaux scolaires : le maternel et le primaire. L’objectif est d’identifier le contexte (professionnel versus extra- professionnel) ainsi que le niveau scolaire (maternel versus primaire) requérant la charge vocale la plus importante. Méthodologie - Le comportement vocal de 21 enseignantes du maternel et de 20 enseignantes du primaire a été accumulé à l’aide d’un dosimètre pendant une semaine de travail (5 jours). Les paramètres analysés sont les suivants : l’intensité vocale, la fréquence fondamentale, la durée de phonation, le nombre de vibrations et la distance parcourue par les plis vocaux. Résultats - Comme attendu, le contexte professionnel est associé à des valeurs significativement plus élevées que le contexte extra-professionnel pour tous les paramètres mesurés. Par ailleurs, la comparaison entre les deux groupes montre des valeurs significativement plus élevées chez les enseignantes du maternel pour le nombre de vibrations et la distance parcourue par les plis vocaux. Conclusions - Le risque de développer des pathologies liées à la charge vocale est principalement associé à l’usage vocal professionnel des enseignantes, et il semble davantage présent chez les institutrices du niveau maternel que chez celles du primaire. [less ▲]Detailed reference viewed: 16 (2 ULg) The X-ray under-luminosity of the O-type supergiants HD16691 and HD14947 revealed by XMM-NewtonDe Becker, Michaël in New Astronomy (2013), 25The members of the scarce category of Of^+ supergiants present properties that are intermediate between regular O-stars and Wolf-Rayet (WR) stars. Significant similarities between these transitional stars ... [more ▼]The members of the scarce category of Of^+ supergiants present properties that are intermediate between regular O-stars and Wolf-Rayet (WR) stars. Significant similarities between these transitional stars and WN-type objects are now clearly established, at least in the visible and near-infrared domains, pointing to common stellar wind properties. In this study, we report on the first dedicated X-ray observations of HD16691 (O4If^+) and HD14947 (O5f^+), revealing a soft thermal spectrum in agreement with the expected X-ray emission from a single O-type star. However, the X-ray luminosity of our targets is slightly lower than expected for single O-type stars, suggesting that the particular properties of their stellar wind has also a significant impact on the X-ray emission of these objects on the way to the WN category. We argue that the X-ray under-luminosity of HD16691 and HD14947 may be interpreted as the signature in X-rays of the intermediate stage between O and WR stars, as a consequence of enhanced wind density. [less ▲]Detailed reference viewed: 21 (4 ULg) Egg and meat production performances of two varieties of the local Ardennaise poultry breed: silver black and golden blackMoula, Nassim ; Michaux, Charles ; Philippe, François-Xavier et alin Animal Genetic Resources = Resources Génétiques Animales = Recursos Genéticos Animales (2013), 53(2), 57-67The Ardennaise breed is emblematic of the Belgian poultry diversity. We compared two varieties of the breed, the golden black and the silver black. The comparison encompassed: (i) the morphology of adult ... [more ▼]The Ardennaise breed is emblematic of the Belgian poultry diversity. We compared two varieties of the breed, the golden black and the silver black. The comparison encompassed: (i) the morphology of adult birds, (ii) the growth, carcass characteristics and meat quality of broilers 22 weeks old, (iii) the laying rate during 52 weeks and the egg quality. Significant differences were observed in the size of mature males and females: body weight, diameter and length of the tarsus, size of the comb and wattles. The two varieties did not differ concerning the carcass and meat quality traits. The golden black has a higher laying rate and a higher yolk / albumen ratio, but lays lighter eggs. It could be interesting to complete this study by molecular markers analysis to evaluate the degree of genetic diversity between the two varieties. [less ▲]Detailed reference viewed: 23 (10 ULg) A genome scan conducted in a multigenerational pedigree with convergent strabismus supports a complex genetic determinism.GEORGES, Anouk ; Cambisano, Nadine ; Ahariz, Naïma et alin PloS one (2013), 8(12), 83574A genome-wide linkage scan was conducted in a Northern-European multigenerational pedigree with nine of 40 related members affected with concomitant strabismus. Twenty-seven members of the pedigree ... [more ▼]A genome-wide linkage scan was conducted in a Northern-European multigenerational pedigree with nine of 40 related members affected with concomitant strabismus. Twenty-seven members of the pedigree including all affected individuals were genotyped using a SNP array interrogating > 300,000 common SNPs. We conducted parametric and non-parametric linkage analyses assuming segregation of an autosomal dominant mutation, yet allowing for incomplete penetrance and phenocopies. We detected two chromosome regions with near-suggestive evidence for linkage, respectively on chromosomes 8 and 18. The chromosome 8 linkage implied a penetrance of 0.80 and a rate of phenocopy of 0.11, while the chromosome 18 linkage implied a penetrance of 0.64 and a rate of phenocopy of 0. Our analysis excludes a simple genetic determinism of strabismus in this pedigree. [less ▲] Diagnosis of the transport of adsorbed material in the Scheldt estuary: A proof of conceptDelhez, Eric ; Wolk, Frank in Journal of Marine Systems (2013), 128Many contaminants can attach to suspended particles. Their transport differs therefore from the transport of dissolved substances, especially in highly turbid environment like estuaries. In this paper, we ... [more ▼]Many contaminants can attach to suspended particles. Their transport differs therefore from the transport of dissolved substances, especially in highly turbid environment like estuaries. In this paper, we show how the Constituent Age and Residence time Theory (CART — www.climate.be/CART) can be adapted to quantify in a rigorous manner the transport rate of contaminants that are present in both the dissolved and adsorbed phases. On the basis of numerical experiment using a 1D model of the Scheldt estuary, it is shown that the interaction with suspended particles significantly affects the transport of contaminants with partition coefficients larger than 1000 ml/g. The mean transit time from Ghent to Vlissingen of such contaminants can reach 160 days while it is only 60 days for water and dissolved constituents. This increase of the transit time is mainly due to the fact that adsorbed constituents spend long periods of time on the bottom. Surprisingly, the downstream transport of adsorbed constituents in the water column appears more effective than that of dissolved constituents. This transport affects however a small fraction of the adsorbed constituent and is therefore not sufficient to compensate for the long resting phase on the bottom of the bulk of the constituent. The concept and methodology introduced in this paper are easily applicable to most model studies and provide powerful and flexible tools for the detailed understanding of the transport of contaminants in estuaries. In particular, the concept of age and modified ages taking into account specifically the time spent in the water column or in the bottom provide new diagnostic tools to understand and quantify the dynamics of contaminants. [less ▲]Detailed reference viewed: 129 (29 ULg) La cascade des MAP kinases : traitements ciblés en cancérologie cutanée.PIERARD, Gérald ; Franchimont, Claudine ; LEONARD, Boris et alin Revue Médicale de Liège (2013), 68(12), 650-654Résumé : Les «Mitogen-Activated Protein Kinases» (MAPK) forment un ensemble coordonné de protéines cellulaires impliquées dans la prolifération, la différenciation, la migration et l’apoptose des cellules ... [more ▼]Résumé : Les «Mitogen-Activated Protein Kinases» (MAPK) forment un ensemble coordonné de protéines cellulaires impliquées dans la prolifération, la différenciation, la migration et l’apoptose des cellules. Elles sont particulièrement activées, par certaines cytokines, hormones, le stress environnemental, ainsi que dans des cancers cutanés. Des agents pharmacologiques ciblés contre la cascade MAPK révolutionnent actuellement la cancérologie cutanée, du moins dans une phase transitoire du processus métastatique. Des traitements combinés sont susceptibles d’améliorer la survie médiane. [less ▲] De l’expérimentation à la modélisation des propriétés hygrothermiques de parois isolées en pailleLouis, Arnaud ; Evrard, Arnaud; Courard, Luc et alin Annales du Bâtiment et des Travaux Publics (2013)Some results of aPROpaille project are presented. The goal of this project is to improve the knowledge about hygrothermal performances of walls in which thermal insulation is mainly provided by straw ... [more ▼]Some results of aPROpaille project are presented. The goal of this project is to improve the knowledge about hygrothermal performances of walls in which thermal insulation is mainly provided by straw. Besides an overall characterization of straw properties and two types of earth plaster, a series of tests was performed to determine the hygrothermal properties of these materials: porosity, sorption curve, water vapour diffusion, capillary absorption, total water absorption, specific heat and thermal conductivity. The determination of these parameters required sometimes the implementation of unusual protocols or unreleased materials. Numerical simulations based on the properties defined in the test campaign are also presented. Results clearly point out the influence of the type of plaster and the orientation of fibres into straw bale. [less ▲]Detailed reference viewed: 20 (3 ULg) Stiefbroeders. Zuid-Nederlandse letteren en natievorming onder Willem I, 1814-1834Steyaert, Kris in Tijdschrift voor Nederlandse Taal- en Letterkunde (2013), 129(4), Detailed reference viewed: 13 (0 ULg) Activité physique et maladies neuromusculairesWANG, François-Charles in Lettre du Neurologue (La) : le Courrier du Spécialiste (2013)Detailed reference viewed: 9 (0 ULg) Do Board Characteristics Affect Information Asymmetry?Sougné, Danielle ; Laouti, Mhamed; Ajina, Aymenin International Journal of Academic Research in Business and Social Sciences (2013), 3(12), 660-675In this paper, we investigate the empirical relationship between corporate governance and information asymmetry across a range of French firms. Based on a cross-sectional analysis, our study of the ... [more ▼]In this paper, we investigate the empirical relationship between corporate governance and information asymmetry across a range of French firms. Based on a cross-sectional analysis, our study of the empirical relationship between corporate governance and information asymmetry involved 160 companies over the years 2008-2010. Mechanisms of corporate governance include the characteristics of the board of directors. Our results seem to indicate a significant relationship between certain mechanisms of corporate governance and the information asymmetry of the French market. These mechanisms can reduce adverse selection costs, and make exchanges more transparent. These results suggest that firms with efficient corporate governance mechanisms may reduce informative asymmetry and improve transparency between investors. [less ▲]Detailed reference viewed: 12 (0 ULg) L'efficacité de l'aide en santé en Afrique de l'Ouest: maintenant plus que jamaisPaul, Elisabeth ; Eclou, Dieudonné; Sossouhounto, Nadine et alin Global Health Promotion (2013)La préoccupation d'améliorer l'efficacité de l'aide au développement dans le secteur de la santé est plus que jamais d’actualité. L'approche sectorielle permet d'obtenir des améliorations importantes à ce ... [more ▼]La préoccupation d'améliorer l'efficacité de l'aide au développement dans le secteur de la santé est plus que jamais d’actualité. L'approche sectorielle permet d'obtenir des améliorations importantes à ce niveau et connaît un renouveau à travers le Partenariat International pour la Santé et initiatives liées (IHP+). Dans ce commentaire, nous montrons comment l'IHP+ a été mis en œuvre dans trois pays ouest-africains francophones: le Bénin, le Burkina Faso et le Mali. La dynamique existant dans le secteur de la santé dans chacun des pays a influencé la façon dont l'IHP+ s’y est traduit. Au-delà de ces dynamiques différentes, l'IHP+ a permis de renforcer la place des plans et dispositifs nationaux de coordination comme plateforme de suivi-évaluation et de redevabilité du secteur santé. Toutefois, certaines pratiques contraires aux principes de l'efficacité de l'aide perdurent encore, en particulier le manque d'alignement sur les systèmes de gestion nationaux et le manque de prévisibilité de l'aide. [less ▲]Detailed reference viewed: 16 (1 ULg) Transmitive spectral SPR droplet biosensing: principle, sensor design and experimental demonstrationHastanin, Juriy ; Lenaerts, Cedric ; Fleury-Frenette, Karl et alin Plasmonics (2013)Surface Plasmons Resonance (SPR) architectures based on grating coupler/disperser combination is an attractive alternative for spectral-based biochemical sensing. In this paper, we investigate ... [more ▼]Surface Plasmons Resonance (SPR) architectures based on grating coupler/disperser combination is an attractive alternative for spectral-based biochemical sensing. In this paper, we investigate theoretically and experimentally a new concept where the plasmon coupling occurs through a thin film grating and sensing occurs via the first evanescent diffraction order in transmitive mode. The surface plasmon wave excitation induces a peak in the wavelength as well as in the angular spectra of the detected first transmitted diffraction order. Accordingly, a change in SPR spectrum of the detected diffraction order can be used to quantify the amount of the target molecules immobilized on the sensor surface and therefore, the concentration of these molecules in the analyte solution. The developed sensor architecture is dedicated to droplet biochemical sensing and appears to be especially suitable for biosensor integration and miniaturization. The presented sensor concept is perfectly suited for mass production of low-cost and reproducible SPR sensor chip for biochemical analysis. The implemented setup gives access to multichannel biosensing with the potential for efficient internal referencing, essential to achieve sufficiently high reproducibility and accuracy of the measurements. [less ▲]Detailed reference viewed: 20 (11 ULg) Reseña de Francisco Delicado, La Lozana andaluza, edición, estudio y notas de Folke Gernert y Jacques Joset, Madrid, Galaxia Gutenberg-Círculo de Lectores-"Biblioteca clásica de la Real Academia Española", 2013François, Jéromine in Celestinesca (2013), 37Detailed reference viewed: 30 (3 ULg) Abundance estimates of southern right whales (Eubalaena australis) in Bahía San Antonio, Patagonia, ArgentinaVermeulen, Els in Journal of Cetacean Research and Management (2013), 13The abundance of southern right whales (Eubalaena australis) was estimated by the means of aerial line-transect surveys for the area of Bahía San Antonio, a bay located in the north-western region of the ... [more ▼]The abundance of southern right whales (Eubalaena australis) was estimated by the means of aerial line-transect surveys for the area of Bahía San Antonio, a bay located in the north-western region of the San Matías Gulf (40°50’S 64°50’W), Rio Negro, Patagonia Argentina. In total, seven aerial surveys were conducted in the first week of August and September 2009, September, October and November 2010, and August, September 2011. Survey effort equalled a total flight time of 12.4h, during which 200 whales were counted in 119 whale groups. Half of the encounters were solitary animals and 17% were mating groups. Corrected abundance estimates showed the highest amount of whales present in the bay during the month of September, with 85±71, 207±108 and 117±55 animals in 2009, 2010 and 2011 respectively. In adjacent months, less than half the amount of whales seemed to be present. The correction factor g(0)availability resulted 0.392±0.456. Perception bias was not accounted for. These aerial surveys resulted in the first estimates of southern right whale abundance in this north Patagonian bay and indicated a rather abrupt peak during the month of September. This being the peak month for right whale presence is consistent with data from other regions in the Southwest Atlantic, but data obtained in the other months remained scarce and thus results should be interpreted carefully. The complete absence of whales in the area during November 2010 and August 2011 raises further questions on the predictability of the whale’s presence in the area. Overall, more consistent aerial surveys should be conducted to accurately determine the annual and interannual evolution of southern right whale abundance in the study area. [less ▲]Detailed reference viewed: 33 (7 ULg) Model Predictive Control of Voltages in Active Distribution NetworksValverde Mora, Gustavo ; Van Cutsem, Thierry in IEEE Transactions on Smart Grid (2013), 4(4), 2152-2161This paper presents a centralized control scheme to regulate distribution network voltages in the presence of high penetration of distributed generation. The approach is inspired of Model Predictive ... [more ▼]This paper presents a centralized control scheme to regulate distribution network voltages in the presence of high penetration of distributed generation. The approach is inspired of Model Predictive Control in order to compensate for modeling inaccuracies and measurement noise. The control actions, calculated from a multi-step optimization, are updated and corrected by real-time measurements. The proposed controller uses a linear model to predict the behavior of the system and the optimization is solved using quadratic programming. The proposed corrective control has been tested in a 11-kV distribution network including 75 nodes and hosting 22 distributed generating units. [less ▲]Detailed reference viewed: 300 (76 ULg)