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 55661     2 3 4 5 6 7 8 9 10 11 12     Editorial: Special issue on natural language processing and text analytics in industryIttoo, Ashwin ; Nguyen, Le Min; van den Bosch, Antalin Computers in Industry (2016)Detailed reference viewed: 49 (8 ULg) Special issue on natural language processing and text analytics in industryIttoo, Ashwin ; Nguyen, Le Minh; van den Bosch, Antalin Computers in Industry (2016), 78Detailed reference viewed: 48 (2 ULg) Incidence and risk factors for early renal dysfunction after liver transplantation.WIESEN, Patricia ; MASSION, Paul ; JORIS, Jean et alin World journal of transplantation (2016), 6(1), 220-232AIM: To determine renal dysfunction post liver transplantation, its incidence and risk factors in patients from a Belgian University Hospital. METHODS: Orthotopic liver transplantations performed from ... [more ▼]AIM: To determine renal dysfunction post liver transplantation, its incidence and risk factors in patients from a Belgian University Hospital. METHODS: Orthotopic liver transplantations performed from January 2006 until September 2012 were retrospectively reviewed (n = 187). Patients with no renal replacement therapy (RRT) before transplantation were classified into four groups according to their highest creatinine plasma level during the first postoperative week. The first group had a peak creatinine level below 12 mg/L, the second group between 12 and 20 mg/L, the third group between 20 and 35 mg/L, and the fourth above 35 mg/L. In addition, patients who needed RRT during the first week after transplantation were also classified into the fourth group. Perioperative parameters were recorded as risk factors, namely age, sex, body mass index (BMI), length of preoperative hospital stay, prior bacterial infection within one month, preoperative ascites, preoperative treatment with beta-blocker, angiotensin-converting enzyme inhibitor or non steroidal anti-inflammatory drugs, preoperative creatinine and bilirubin levels, donor status (cardiac death or brain death), postoperative lactate level, need for intraoperative vasopressive drugs, surgical revision, mechanical ventilation for more than 24 h, postoperative bilirubin and transaminase peak levels, postoperative hemoglobin level, amount of perioperative blood transfusions and type of immunosuppression. Univariate and multivariate analysis were performed using logistic ordinal regression method. Post hoc analysis of the hemostatic agent used was also done. RESULTS: There were 78 patients in group 1 (41.7%), 46 in group 2 (24.6%), 38 in group 3 (20.3%) and 25 in group 4 (13.4%). Twenty patients required RRT: 13 (7%) during the first week after transplantation. Using univariate analysis, the severity of renal dysfunction was correlated with presence of ascites and prior bacterial infection, preoperative bilirubin, urea and creatinine level, need for surgical revision, use of vasopressor, postoperative mechanical ventilation, postoperative bilirubin and urea, aspartate aminotransferase (ASAT), and hemoglobin levels and the need for transfusion. The multivariate analysis showed that BMI (OR = 1.1, P = 0.004), preoperative creatinine level (OR = 11.1, P < 0.0001), use of vasopressor (OR = 3.31, P = 0.0002), maximal postoperative bilirubin level (OR = 1.44, P = 0.044) and minimal postoperative hemoglobin level (OR = 0.059, P = 0.0005) were independent predictors of early post-liver transplantation renal dysfunction. Neither donor status nor ASAT levels had significant impact on early postoperative renal dysfunction in multivariate analysis. Absence of renal dysfunction (group 1) was also predicted by the intraoperative hemostatic agent used, independently of the extent of bleeding and of the preoperative creatinine level. CONCLUSION: More than half of receivers experienced some degree of early renal dysfunction after liver transplantation. Main predictors were preoperative renal dysfunction, postoperative anemia and vasopressor requirement. [less ▲]Detailed reference viewed: 17 (1 ULg) Éditorial=Woord voorafDecoster, Sara in Cahiers de la Documentation = Bladen voor Documentatie (2016), 70Detailed reference viewed: 12 (1 ULg) Compte rendu de la première séance du Séminaire du Lemme : « La médiation et la fabrique de l’écart »Franck, Thomas in Alecsic.org (2016)Detailed reference viewed: 30 (4 ULg) Comparison of Nonlinear Domain Decomposition Schemes for Coupled Electromechanical ProblemsHalbach, Alexandre ; Dular, Patrick ; Geuzaine, Christophe in IEEE Transactions on Magnetics (2016), 52(3), The aim of this paper is to compare several domain decomposition schemes for nonlinear, coupled electromechanical problems. Both staggered and monolithic electrostatic/elastic formulations are considered ... [more ▼]The aim of this paper is to compare several domain decomposition schemes for nonlinear, coupled electromechanical problems. Both staggered and monolithic electrostatic/elastic formulations are considered for the multiphysics problem. The domain decomposition is applied either to a single multiphysics iteration, which corresponds to a linear problem, or to the full nonlinear multiphysics resolution. In the latter, the problem solved at each domain decomposition iteration is nonlinear. The influence of the elastic wave’s frequency and the electrostatic potential on the convergence rate and the computational cost of the algorithm is investigated on a 2-D model of a vibrating micromembrane array. [less ▲]Detailed reference viewed: 20 (3 ULg) Comparaison de l’impact du « VeinoPlus Sport » et du « TENS » sur la récupération de jeunes footballeurs amateursGod, Maxime; LE GOFF, Caroline ; Evrard, Frédéric et alin Journal de Traumatologie du Sport (2016), 33(1), 14-19Aims The aim of this study was to evaluate the impact of “VeinoPlus Sport” on amateur soccer players’ recovery after an intense physical activity (2 drills). Method We proceeded to a comparative study ... [more ▼]Aims The aim of this study was to evaluate the impact of “VeinoPlus Sport” on amateur soccer players’ recovery after an intense physical activity (2 drills). Method We proceeded to a comparative study between two devices: “VeinoPlus Sport” and “TENS” (used as a control system) on a population of 20 players (average age 17,1±0,8). Under identical conditions each player used the two devices during two separate sessions (called group “VeinoPlus Sport” and group “TENS”). The players performed an intense effort following the YoYo test concept. Four blood samples were taken from each participant and a Myotest evaluation was performed: one before the test, one just after the first intense effort, another after a short recovery time following the first effort, and the last one right after the second intense effort. For statistical analysis, we used the Anova algorithm of the “StatPlus” system and a Scheffé test. Results With both devices, we observed a significant elevation of lactate, HCO3− ions, and myoglobin as time progressed. The analysis of other blood parameters did not show any significant evolution in the course of the testing. The “VeinoPlus Sport” group, after the session, expressed feeling lighter and more fit than usual following an intense physical activity. They did not suffer any pain, tiredness, nor diminishment of strength. The same observation was made with the “TENS” group with the exception that some players felt a bit of soreness in their thigh and calf areas. In general, all participants admitted preferring the use of recovery machines instead of natural recovery. At the same time, none expressed any preferences between either of the devices. Conclusion The main asset of this study resided in the highlighting of minor differences as no way significant between the two machines tested on the chosen population. The “TENS” shows similar results as the “VeinoPlus Sport” even if a slight preference for the latter was expressed. Both devices permitted an equal or even better performance in the second drill in comparison to the first drill. [less ▲]Detailed reference viewed: 39 (5 ULg) Review of: K. Mulligan, Wittgenstein et la philosophie austro-allemande (Paris, 2012)Seron, Denis in Dialectica : International Journal of Philosophy & Official Organ of the ESAP (2016), 70(1), Detailed reference viewed: 50 (1 ULg) Inhibition of mitochondrial 2-oxoglutarate dehydrogenase impairs viability of cancer cells in a cell-specific metabolismdependent mannerBunik, Victoria; Mkrtchyan, Garait; Grabarska, Aneta et alin Oncotarget (2016), 7(26400), 264212-Oxoglutarate dehydrogenase (OGDH) of the tricarboxylic acid (TCA) cycle is often implied to be inactive in cancer, but this was not experimentally tested. We addressed the question through specific ... [more ▼]2-Oxoglutarate dehydrogenase (OGDH) of the tricarboxylic acid (TCA) cycle is often implied to be inactive in cancer, but this was not experimentally tested. We addressed the question through specific inhibition of OGDH by succinyl phosphonate (SP). SP action on different cancer cells was investigated using indicators of cellular viability and reactive oxygen species (ROS), metabolic profiling and transcriptomics. Relative sensitivity of various cancer cells to SP changed with increasing SP exposure and could differ in the ATP- and NAD(P)H-based assays. Glioblastoma responses to SP revealed metabolic sub-types increasing or decreasing cellular ATP/NAD(P)H ratio under OGDH inhibition. Cancer cell homeostasis was perturbed also when viability indicators were SPresistant, e.g. in U87 and N2A cells. The transcriptomics database analysis showed that the SP-sensitive cells, such as A549 and T98G, exhibit the lowest expression of OGDH compared to other TCA cycle enzymes, associated with higher expression of affiliated pathways utilizing 2-oxoglutarate. Metabolic profiling confirmed the dependence of cellular SP reactivity on cell-specific expression of the pathways. Thus, oxidative decarboxylation of 2-oxoglutarate is significant for the interdependent homeostasis of NAD(P)H, ATP, ROS and key metabolites in various cancer cells. Assessment of cellspecific responses to OGDH inhibition is of diagnostic value for anticancer strategies. [less ▲]Detailed reference viewed: 21 (6 ULg) Design Sensitivity Analysis for Shape Optimization of Nonlinear Magnetostatic SystemsKuci, Erin ; Henrotte, François; Duysinx, Pierre et alin IEEE Transactions on Magnetics (2016), 52(3), The paper discusses the sensitivity analysis for the shape optimization of a nonlinear magnetostatic system, evaluated both by direct and adjoint approaches. The calculations rely on the Lie derivative ... [more ▼]The paper discusses the sensitivity analysis for the shape optimization of a nonlinear magnetostatic system, evaluated both by direct and adjoint approaches. The calculations rely on the Lie derivative concept of differential geometry where the flow is the velocity field associated with the modification of a geometrical parameter in the model. The resulting sensitivity formulas can be expressed naturally in a finite element setting through a volume integral in the layer of elements connected to the surface undergoing shape modification. The accuracy of the methodology is analyzed on a 2D model of an interior permanent magnet motor (IPM), and on a 3D model of a permanent magnet system. [less ▲]Detailed reference viewed: 43 (11 ULg) Weak magnetic field, solid-envelope rotation, and wave-induced N-enrichment in the SPB star zeta CassiopeiaeBriquet, Maryline ; Neiner, C.; Petit, P. et alin Astronomy and Astrophysics (2016), 587Aims. The main-sequence B-type star zeta Cassiopeiae is known as a N-rich star with a magnetic field discovered with the Musicos spectropolarimeter. We model the magnetic field of the star by means of 82 ... [more ▼]Aims. The main-sequence B-type star zeta Cassiopeiae is known as a N-rich star with a magnetic field discovered with the Musicos spectropolarimeter. We model the magnetic field of the star by means of 82 new spectropolarimetric observations of higher precision to investigate the field strength, topology, and effect. Methods. We gathered data with the Narval spectropolarimeter installed at Télescope Bernard Lyot (TBL; Pic du Midi, France) and applied the least-squares deconvolution technique to measure the circular polarisation of the light emitted from zeta Cas. We used a dipole oblique rotator model to determine the field configuration by fitting the longitudinal field measurements and by synthesizing the measured Stokes V profiles. We also made use of the Zeeman-Doppler imaging technique to map the stellar surface and to deduce the difference in rotation rate between the pole and equator. Results. zeta Cas exhibits a polar field strength B_pol of 100-150 G, which is the weakest polar field observed so far in a massive main-sequence star. Surface differential rotation is ruled out by our observations and the field of zeta Cas is strong enough to enforce rigid internal rotation in the radiative zone according to theory. Thus, the star rotates as a solid body in the envelope. Conclusions. We therefore exclude rotationally-induced mixing as the cause of the surface N-enrichment. We discuss that the transport of chemicals from the core to the surface by internal gravity waves is the most plausible explanation for the nitrogen overabundance at the surface of zeta Cas. [less ▲]Detailed reference viewed: 34 (3 ULg) Relationships between population density, fine-scale genetic structure, mating system and pollen dispersal in a timber tree from African rainforestsDuminil, Jérôme; Daïnou, Kasso ; Kaviriri, D.K. et alin Heredity (2016), 116Owing to the reduction of population density and/or the environmental changes it induces, selective logging could affect the demography, reproductive biology and evolutionary potential of forest trees ... [more ▼]Owing to the reduction of population density and/or the environmental changes it induces, selective logging could affect the demography, reproductive biology and evolutionary potential of forest trees. This is particularly relevant in tropical forests where natural population densities can be low and isolated trees may be subject to outcross pollen limitation and/or produce low-quality selfed seeds that exhibit inbreeding depression. Comparing reproductive biology processes and genetic diversity of populations at different densities can provide indirect evidence of the potential impacts of logging. Here, we analysed patterns of genetic diversity, mating system and gene flow in three Central African populations of the self-compatible legume timber species Erythrophleum suaveolens with contrasting densities (0.11, 0.68 and 1.72 adults per ha). The comparison of inbreeding levels among cohorts suggests that selfing is detrimental as inbred individuals are eliminated between seedling and adult stages. Levels of genetic diversity, selfing rates (∼16%) and patterns of spatial genetic structure (Sp ∼ 0.006) were similar in all three populations. However, the extent of gene dispersal differed markedly among populations: the average distance of pollen dispersal increased with decreasing density (from 200m in the high-density population to 1000m in the low-density one). Overall, our results suggest that the reproductive biology and genetic diversity of the species are not affected by current logging practices. However, further investigations need to be conducted in low-density populations to evaluate (1) whether pollen limitation may reduce seed production and (2) the regeneration potential of the species. [less ▲]Detailed reference viewed: 22 (8 ULg) Decoding intracranial EEG data with multiple kernel learning methodSchrouff, Jessica ; Mourao-Miranda, Janaina; Phillips, Christophe et alin Journal of Neuroscience Methods (2016), 261Machine learning models have been successfully applied to neuroimaging data to make predictions about behavioral and cognitive states of interest. While these multivariate methods have greatly advanced ... [more ▼]Machine learning models have been successfully applied to neuroimaging data to make predictions about behavioral and cognitive states of interest. While these multivariate methods have greatly advanced the field of neuroimaging, their application to electrophysiological data has been less common especially in the analysis of human intracranial electroencephalography (iEEG, also known as electrocorticography or ECoG) data, which contains a rich spectrum of signals recorded from a relatively high number of recording sites. In the present work, we introduce a novel approach to determine the contribution of different bandwidths of EEG signal in different recording sites across different experimental conditions using the Multiple Kernel Learning (MKL) method. To validate and compare the usefulness of our approach, we applied this method to an ECoG dataset that was previously analysed and published with univariate methods. Our findings proved the usefulness of the MKL method in detecting changes in the power of various frequency bands during a given task and selecting automatically the most contributory signal in the most contributory site(s) of recording. With a single computation, the contribution of each frequency band in each recording site in the estimated multivariate model can be highlighted, which then allows formulation of hypotheses that can be tested a posteriori with univariate methods if needed. [less ▲]Detailed reference viewed: 23 (3 ULg) Noninvasive neurostimulation methods for migraine therapy: The available evidenceSCHOENEN, Jean ; Baschi, Roberta; MAGIS, Delphine et alin Cephalalgia : An International Journal of Headache (2016)Abstract Background: Migraine is one of the most disabling neurological disorders. The current pharmacological armamentarium is not satisfying for a large proportion of patients because the responder rate ... [more ▼]Abstract Background: Migraine is one of the most disabling neurological disorders. The current pharmacological armamentarium is not satisfying for a large proportion of patients because the responder rate does not exceed 50% on average and the most effective drugs often induce intolerable side effects. During recent years, noninvasive central and peripheral neuromodulation methods have been explored for migraine treatment. Overview: A review of the available evidence suggests that noninvasive neuromodulation techniques could be beneficial for migraine patients. The transcranial stimulation methods allow modulating selectively cortical activity and can thus be curtailed to the patient’s pathophysiological profile, while transcutaneous stimulation of pericranial nerves likely modulates central pain control centers. Occipital single-pulse transcranial magnetic stimulation and transcutaneous supraorbital stimulation have the strongest evidence respectively for acute and preventive treatment. Transcranial direct current stimulation and repetitive magnetic stimulation are promising in pilot studies, but large sham-controlled trials are not yet available. Conclusions: The noninvasive neurostimulation methods are promising for migraine treatment and devoid of serious adverse effects allowing their combination with drug therapies. Their application in clinical practice will depend on the industry’s capacity to develop portable and user-friendly devices, and on the scientists’ capacity to prove their efficacy in randomized sham-controlled trials. [less ▲]Detailed reference viewed: 16 (1 ULg) L’entretien de tutorat documenté : un accompagnement réflexif ?Alonso Vilches, Vincent ; Pirard, Florence in Education Permanente (2016), 206(1), 131-138Notre contribution interroge l’activité tutorale dans un métier adressé à autrui, celui des professionnels de l’enfance. Elle souligne la complexité d’une telle activité dans un travail fondé sur des ... [more ▼]Notre contribution interroge l’activité tutorale dans un métier adressé à autrui, celui des professionnels de l’enfance. Elle souligne la complexité d’une telle activité dans un travail fondé sur des référents multiples, qui nécessitent le développement d’une réflexivité sensible à la singularité des situations quotidiennes. Elle propose une analyse de moments d’entretien de tutorat accompagnés par un professionnel sur base d’une documentation vidéo. Elle montre que ces moments ne permettent pas forcément au stagiaire de développer une représentation signifiante de la situation ni d’en dégager les inférences nécessaires pour ajuster son action. [less ▲]Detailed reference viewed: 43 (13 ULg) Le médicament du mois. Le dulaglutide (Trulicity®) : Nouvel agoniste des récepteurs du Glucagon-Like Peptide-1 en injection hebdomadaire pour traiter le diabète de type 2SCHEEN, André in Revue Médicale de Liège (2016), 71Summary : Dulaglutide (Trulicity®) is a new once-weekly agonist of Glucagon-Like Peptide-1 (GLP-1) receptors indicated in the treatment of type 2 diabetes. Phase III clinical trials in AWARD programme ... [more ▼]Summary : Dulaglutide (Trulicity®) is a new once-weekly agonist of Glucagon-Like Peptide-1 (GLP-1) receptors indicated in the treatment of type 2 diabetes. Phase III clinical trials in AWARD programme demonstrated the efficacy and safety of dulaglutide in patients with type 2 diabetes treated by diet and exercise, metformin, a combination of metformin and a sulfonylurea or metformin and pioglitazone or even by supplements of prandial insulin. In the AWARD programme, dulaglutide (subcutaneous 0.75 or 1.5 mg once weekly) exerted a greater glucose-lowering activity than metformin, sitagliptin, exenatide or insulin glargine, and was non-inferior to liraglutide 1.8 mg once daily. Dulaglutide is currently reimbursed in Belgium after failure of and in combination with a dual oral therapy with metformin and a sulfonylurea or metformin and pioglitazone. [less ▲]Detailed reference viewed: 48 (3 ULg) Computation of Source for Non-Meshed Coils in a Reduced Domain with A–V FormulationFerrouillat, Pauline; Guérin, Christophe; Meunier, Gérard et alin IEEE Transactions on Magnetics (2016), 52(3), The discretized source magnetic vector potential Aj, projected from source field Hs with H(curl,Ω) semi-norm, is studied for non-meshed coils with magnetic vector potential A and electric scalar potential ... [more ▼]The discretized source magnetic vector potential Aj, projected from source field Hs with H(curl,Ω) semi-norm, is studied for non-meshed coils with magnetic vector potential A and electric scalar potential V formulation. As a novelty, source potential Aj is computed in a reduced domain Ωred instead of the complete domain Ω. For domains with fixed and moving parts, potential Aj can be computed on each part, for each of the related current sources, with no need to ensure its continuity between these parts. [less ▲]Detailed reference viewed: 30 (4 ULg) A One-year Survey of Microsporum audouinii infections in Belgium: epidemiological and genotypic characterisationSACHELI, Rosalie ; ADJETEY BAHUN, Akolé ; DARFOUF, Rajae et alin Clinical Microbiology and Infection (2016), 22(3), 2859-28517During recent years the proportion of tinea capitis (TC) infections due to Microsporum audouinii (M. audouinii) has increased both in Belgium and other European countries. To better understand the ... [more ▼]During recent years the proportion of tinea capitis (TC) infections due to Microsporum audouinii (M. audouinii) has increased both in Belgium and other European countries. To better understand the emergence of this species in the country, the Belgian National Reference Center (NRC) for dermatophytes launched an epidemiological survey on the main anthropophilic dermatophytes causing TC in Belgium and including the genomic characterization of M. audouinii isolates. In total, 116 strains of M. audouinii were confirmed and characterized by the DiversiLab® system (bioMérieux). Six genotypic variants were identified, among which one major group included 90 isolates and the reference strain. Another variant group (11 strains) was exclusively confined to a geographical region in South Belgium. Analysis of epidemiological characteristics of the infected population showed that the main age category concerned 5-9 year-old children with a sex ratio (Male/Female) of 1.97. Data concerning the geographic origin of the family revealed a majority of Belgian nationality (44.7%), suggesting that the contamination has originated in Belgium. Other nationalities primarily originated from Africa. At this time, no clear correlation has been established between one particular strain and a specific country of origin. [less ▲]Detailed reference viewed: 56 (4 ULg) Quelle est la stratégie idéale pour traiter l’hyperglycémie du diabète de type 2 ?SCHEEN, André in Médecine des Maladies Métaboliques (2016), 10(2), 91-93Detailed reference viewed: 36 (1 ULg) Ténotomie chez le veauDjebala, Salem ; Sartelet, Arnaud in Point Vétérinaire (2016), 363Detailed reference viewed: 35 (18 ULg) SURVEYS OF APHIDS AND POTATO VIRUS Y IN POTATO FIELDS IN WALLONIA, BELGIUM: A FOUR YEAR OVERVIEWBosquée, Emilie ; Yattara, Almouner A.; Crutzen, François et alin Journal of Plant Pathology [=JPP] (2016)Populations of Potato virus Y (PVY) and aphids were characterized in potato seed and stock production fields in southern Belgium (Wallonia) from 2009 to 2012. More than 40 aphid species were identified ... [more ▼]Populations of Potato virus Y (PVY) and aphids were characterized in potato seed and stock production fields in southern Belgium (Wallonia) from 2009 to 2012. More than 40 aphid species were identified using yellow pan traps. Four thousands potato leaf samples collected in 87 plots from 29 fields were analysed for the presence and typing of PVY strains by RT-PCR. PVY was detected in 26%, 20% and 60% of the seed plots tested from 2009 to 2011, respectively. A higher prevalence of PVY was observed in plots of stock potatoes (60% in 2010 and 67% in 2011). The N/NTN strain of PVY was predominant, representing 70-99% of the strains. [less ▲]Detailed reference viewed: 22 (6 ULg) Using platelet-rich plasma to treat jumper’s knees: Exploring the effect of a second closely-timed infiltrationKaux, Jean-François ; Croisier, Jean-Louis ; Forthomme, Bénédicte et alin Journal of Science and Medicine in Sport (2016), 19(3), 200-204Some clinical series have evaluated the effect of platelet-rich plasma (PRP) in the treatment of proximal patellar tendinopathy. Although it is possible that a single infiltrative administration may prove ... [more ▼]Some clinical series have evaluated the effect of platelet-rich plasma (PRP) in the treatment of proximal patellar tendinopathy. Although it is possible that a single infiltrative administration may prove to be an effective treatment for this indication, most of the existing studies evaluated the effects of two or three successive infiltrations. The aim of this study was to evaluate whether two infiltrations of PRP proves more effective than a single treatment. DESIGN: Prospective, randomized and comparative study of level 2. METHODS: Twenty patients suffering from chronic proximal patellar tendinopathy were enrolled into the study and split into two randomized groups (one or two infiltrations of PRP, respectively). The 3-month follow-up evaluation consisted of VAS, IKDC and VISA-P scores, along with algometer, isokinetic and ultrasounds evaluations. After 1 year, subjects were contacted to define their functional evolution. RESULTS: The concentration of the PRP used for each infiltration was similar in both groups, and contained no red or white cells. Results revealed no difference in treatment efficacy between the groups. CONCLUSIONS: The comparison between one or two infiltrations of PRP did not reveal any difference between the two groups at short to mid term. A second closely-timed infiltration of PRP to treat proximal patellar tendinopathies is not necessary to improve the efficacy of this treatment in the short term. [less ▲]Detailed reference viewed: 92 (30 ULg) Analyse qualitative interdisciplinaire du discours de travailleurs à l’aide d’un logiciel collaboratif : le cas de la flexicuritéBeuker, Laura ; DE CIA, Julie ; Dervaux, Amélie et alin Recherches Qualitatives (2016), 35(1), 29-55L’ambition de cet article est double : explorer les vertus de l’utilisation d’un logiciel d’analyse qualitative dans le cadre d’un travail interdisciplinaire sur la flexicurité, et réaliser une revue de ... [more ▼]L’ambition de cet article est double : explorer les vertus de l’utilisation d’un logiciel d’analyse qualitative dans le cadre d’un travail interdisciplinaire sur la flexicurité, et réaliser une revue de littérature transversale à partir des problématiques concrètes que ce concept cristallise dans le vécu des travailleurs. La flexicurité constitue un oxymore qui prône la recherche d’un équilibre entre besoins de flexibilité et de sécurité sur le marché du travail. Cet équilibre est avant tout un objectif politique, mais il reste fragile aux yeux des acteurs concernés. En cherchant à croiser le regard analytique de trois disciplines – psychologie, gestion et sociologie –, nous avons recouru au logiciel Cassandre (Lejeune, 2008) pour dégager des tensions discursives autour des notions de flexibilité et de sécurité dans un corpus de vingt entretiens qualitatifs. L’article permet ainsi de concrétiser l’intérêt et les limites de l’utilisation d’un logiciel d’analyse qualitative dans le cadre d’un travail interdisciplinaire. [less ▲]Detailed reference viewed: 74 (14 ULg) Option Replication and the Performance of a Market TimerHübner, Georges in Studies in Economics & Finance (2016), 33(1), 2-25The Treynor and Mazuy framework is a widely used return-based model of market timing. However, existing corrections to the regression intercept can be manipulated through derivatives trading. We propose ... [more ▼]The Treynor and Mazuy framework is a widely used return-based model of market timing. However, existing corrections to the regression intercept can be manipulated through derivatives trading. We propose an adjustment based on Merton's option replication approach. The linear and quadratic coefficients of the regression are exploited to assess the cost of the replicating option that yields similar convexity for a passive portfolio. A similar reasoning applies for various timing patterns and in multi-factor models. The proposed framework induces a potential rebalancing risk and involves the delicate issue of choosing the cheapest option. We show that these issues can be overcome for reasonable tolerance levels. [less ▲]Detailed reference viewed: 56 (8 ULg) Dynamics of upstream movements of the European eel Anguilla anguilla in an inland area of the River Meuse over the last 20 yearsNzau Matondo, Billy ; Ovidio, Michaël in Environmental Biology of Fishes (2016), 99The dynamics of upstream movements of the yellow eel Anguilla anguilla were investigated at Lixhe on the Belgian River Meuse in an inland fish pass regularly monitored from 1992 to 2014. Based on a ... [more ▼]The dynamics of upstream movements of the yellow eel Anguilla anguilla were investigated at Lixhe on the Belgian River Meuse in an inland fish pass regularly monitored from 1992 to 2014. Based on a constant year-to-year sampling effort, we examined the abundance of ascending yellow eels and their body size, seasonal movement, and the associated water temperature and flow. Over the last 23 years, the number of ascending yellow eels has declined at an average 4.2% per year since 1992. The abundance of eels in 2014 is estimated at 4.5% of the ascending stock in 1992. We observed that some annual variations in eel abundance at Lixhe might be related to opening fish passes downstream of the study site. The results clearly demonstrated that long-term declining abundance of eels has resulted in increased sizes (mean increase, 4.1 mm per year since 1992) and temperatures triggering the upstream movement process (1.03°C per decade), with earlier dates for the last eel passages reducing the difference between temperature extremes of eel passages through the fish pass during the migration season. Eel movements occurred in spring and summer at low river discharge and were mainly triggered by high-temperature events. Eels have become larger with time because of improved feeding opportunities and more growth habitats available resulting from the long-term reduction in recruitment. This study highlights the importance of investigating long time spans for a better comprehension of the changes observed in yellow eels and for the optimization of management measures and future research. [less ▲]Detailed reference viewed: 42 (4 ULg) Reduced Order Model for Accounting for High Frequency Effects in Power Electronic ComponentsPaquay, Yannick ; Geuzaine, Christophe ; Hasan, Md. Rokibul et alin IEEE Transactions on Magnetics (2016)Detailed reference viewed: 58 (12 ULg) Lire un dossier de documents à visée informative et y circuler : un "objet enseignable" au début du secondaire?De Croix, Séverine ; Penneman, Jessicain Recherches en Education (2016), 25Séverine De Croix et Jessica Penneman présentent un programme de recherche quasi-expérimental et longitudinal qui porte sur l’enseignement de la lecture et de l’écriture de textes informatifs chez des ... [more ▼]Séverine De Croix et Jessica Penneman présentent un programme de recherche quasi-expérimental et longitudinal qui porte sur l’enseignement de la lecture et de l’écriture de textes informatifs chez des élèves du 1er degré de l’enseignement secondaire en Belgique francophone. Dans cette contribution, elles montrent combien les textes documentaires sont composites et comportent des obstacles liés aux schémas rhétoriques et aux finalités qui les caractérisent. La recherche vise, entre autres, à aider les élèves à construire un texte homogène à partir de données multiples et hétérogènes. Les premiers résultats indiquent que suite au dispositif mis en place, les élèves progressent légèrement dans la manipulation de nombreux documents, relevant de genres variés, et que les enseignants transforment l’outil didactique initial, notamment en sélectionnant les tâches qui sont les plus fermées. [less ▲]Detailed reference viewed: 20 (0 ULg) From Artisanal to CAD-CAM Blocks: State of the Art of Indirect CompositesMAINJOT, Amélie ; DUPONT, Nathalie ; OUDKERK, Julie et alin Journal of Dental Research (2016), 95(5), 487-495Indirect composites have been undergoing an impressive evolution over the last few years. Specifically, recent developments in computer- aided design–computer-aided manufacturing (CAD-CAM) blocks have ... [more ▼]Indirect composites have been undergoing an impressive evolution over the last few years. Specifically, recent developments in computer- aided design–computer-aided manufacturing (CAD-CAM) blocks have been associated with new polymerization modes, innovative microstructures, and different compositions. All these recent breakthroughs have introduced important gaps among the properties of the different materials. This critical state-of-the-art review analyzes the strengths and weaknesses of the different varieties of CAD- CAM composite materials, especially as compared with direct and artisanal indirect composites. Indeed, new polymerization modes used for CAD-CAM blocks—especially high temperature (HT) and, most of all, high temperature–high pressure (HT-HP)—are shown to significantly increase the degree of conversion in comparison with light-cured composites. Industrial processes also allow for the augmentation of the filler content and for the realization of more homogeneous structures with fewer flaws. In addition, due to their increased degree of conversion and their different monomer composition, some CAD-CAM blocks are more advantageous in terms of toxicity and monomer release. Finally, materials with a polymer-infiltrated ceramic network (PICN) microstructure exhibit higher flexural strength and a more favorable elasticity modulus than materials with a dispersed filler microstructure. Consequently, some high- performance composite CAD-CAM blocks—particularly experimental PICNs—can now rival glass-ceramics, such as lithium-disilicate glass-ceramics, for use as bonded partial restorations and crowns on natural teeth and implants. Being able to be manufactured in very low thicknesses, they offer the possibility of developing innovative minimally invasive treatment strategies, such as “no prep” treatment of worn dentition. Current issues are related to the study of bonding and wear properties of the different varieties of CAD-CAM composites. There is also a crucial need to conduct clinical studies. Last, manufacturers should provide more complete information regarding their product polymerization process, microstructure, and composition, which significantly influence CAD-CAM material properties. [less ▲]Detailed reference viewed: 65 (6 ULg) Adolescence, et "double identité". Quand l’engagement radical violent devient une réponse à un questionnement identitaireGarcet, Serge in L'Observatoire (2016), 86L’engagement radical violent est caractérisé par la jeunesse de ses participants. Il apparaît comme une réponse individuelle à un questionnement identitaire dans lequel des processus cognitifs ... [more ▼]L’engagement radical violent est caractérisé par la jeunesse de ses participants. Il apparaît comme une réponse individuelle à un questionnement identitaire dans lequel des processus cognitifs caractéristiques de l’adolescence sont associés aux représentations qu’engendre la problématique de la « double identité » chez les jeunes issus de l’immigration. L’article tente de décrire ce processus du point de vue psychologique tout en relevant le rôle déterminant tenu par les cognitions et les émotions sur l’adoption d’une posture victimaire derrière l’engagement radical. [less ▲]Detailed reference viewed: 72 (19 ULg) Calcifications articulaires, péri et juxtarticulaires « physiologiques » chez le chienFrançois, Marion; Bolen, Géraldine in Monde Vétérinaire (Le) (2016), (158), 14-17Il existe, chez le chien, de nombreuses petites calcifications péri-, juxta- et articulaires « physiologiques » avec une présence inconstante, qui peuvent être confondues avec des lésions type fragment ... [more ▼]Il existe, chez le chien, de nombreuses petites calcifications péri-, juxta- et articulaires « physiologiques » avec une présence inconstante, qui peuvent être confondues avec des lésions type fragment. Une bonne connaissance de leur localisation anatomique permet de distinguer les variations anatomiques normales des lésions pathologiques. Cet article reprend une liste de ces principales calcifications « physiologiques » pouvant être retrouvées sur des radiographies. [less ▲]Detailed reference viewed: 19 (4 ULg) Faraday rotation, band splitting, and one-way propagation of plasmon waves on a nanoparticle chainPike, Nicholas ; Stroud, Davidin Journal of Applied Physics (2016), 119We calculate the dispersion relations of plasmonic waves propagating along a chain of semiconducting or metallic nanoparticles in the presence of both a static magnetic field B and a liquid crystalline ... [more ▼]We calculate the dispersion relations of plasmonic waves propagating along a chain of semiconducting or metallic nanoparticles in the presence of both a static magnetic field B and a liquid crystalline host. The dispersion relations are obtained using the quasistatic approximation and a dipole-dipole approximation to treat the interaction between surface plasmons on different nanoparticles. For plasmons propagating along a particle chain in a nematic liquid crystalline host with both B and the director parallel to the chain, we find a small, but finite, Faraday rotation angle. For B perpendicular to the chain, but director still parallel to the chain, the field couples the longitudinal and one of the two transverse plasmonic branches. This coupling is shown to split the two branches at the zero field crossing by an amount proportional to |B||B|. In a cholesteric liquid crystal host and an applied magnetic field parallel to the chain, the dispersion relations for left- and right-moving waves are found to be different. For some frequencies, the plasmonic wave propagates only in one of the two directions. [less ▲]Detailed reference viewed: 14 (3 ULg) Des nouvelles de votre revueRADERMECKER, Régis in Revue de l'Association Belge du Diabète (2016), 59Detailed reference viewed: 12 (2 ULg) Latex, un peu, beaucoup (11. Multitraitement)Dupont, Pascal in Losanges (2016), 32Detailed reference viewed: 18 (1 ULg) Finite-Element Homogenization of Laminated Iron Cores With Inclusion of Net Circulating Currents Due to Imperfect InsulationGyselinck, Johan; Dular, Patrick ; Krähenbühl, Laurent et alin IEEE Transactions on Magnetics (2016), 52(3), This paper deals with the time-domain homogenization of laminated cores in 2-D or 3-D finite-element (FE) models of electromagnetic devices, allowing for net circulating current in the laminations (e.g ... [more ▼]This paper deals with the time-domain homogenization of laminated cores in 2-D or 3-D finite-element (FE) models of electromagnetic devices, allowing for net circulating current in the laminations (e.g., due to imperfect or damaged insulation). The homogenization is based on the expansion of the induction throughout the lamination thickness using a set of orthogonal polynomial basis functions (BFs), in conjunction with the magnetic vector potential formulation. These BFs allow for net flux, net current, and skin effect in the laminations; by choosing the number of BFs, one can compromise between accuracy and computational cost. The approach is validated through a linear 2-D test case with in-plane imposed and induced current density. A brute-force model, in which all laminations are finely meshed, produces the reference solution. The extension to nonlinear 3-D problems is expected to be straightforward. [less ▲]Detailed reference viewed: 15 (2 ULg) Comment on: Hemidystonia caused by frontal cortical infarction.Garraux, Gaëtan in Acta Neurologica Belgica (2016), 116Detailed reference viewed: 3 (0 ULg) Active Management of Low-Voltage Networks for Mitigating Overvoltages due to Photovoltaic UnitsOlivier, Frédéric ; Aristidou, Petros ; Ernst, Damien et alin IEEE Transactions on Smart Grid (2016), 2(7), 926-936In this paper, the overvoltage problems that might arise from the integration of photovoltaic panels into low-voltage distribution networks is addressed. A distributed scheme is proposed that adjusts the ... [more ▼]In this paper, the overvoltage problems that might arise from the integration of photovoltaic panels into low-voltage distribution networks is addressed. A distributed scheme is proposed that adjusts the reactive and active power output of inverters to prevent or alleviate such problems. The proposed scheme is model-free and makes use of limited communication between the controllers, in the form of a distress signal, only during emergency conditions. It prioritizes the use of reactive power, while active power curtailment is performed only as a last resort. The behavior of the scheme is studied using dynamic simulations on a single low-voltage feeder and on a larger network composed of 14 low-voltage feeders. Its performance is compared to a centralized scheme based on the solution of an Optimal Power Flow problem, whose objective function is to minimize the active power curtailment. The proposed scheme successfully mitigates overvoltage situations due to high photovoltaic penetration and performs almost as well as the Optimal Power Flow based solution with significantly less information and communication requirements. [less ▲]Detailed reference viewed: 790 (127 ULg) Origin of emission from square-shaped organic microlasersDubertrand, Rémy in Europhysics Letters [=EPL] (2016), 113The emission from open cavities with non-integrable features remains a challenging problem of practical as well as fundamental relevance. Square-shaped dielectric microcavities provide a favorable case ... [more ▼]The emission from open cavities with non-integrable features remains a challenging problem of practical as well as fundamental relevance. Square-shaped dielectric microcavities provide a favorable case study with generic implications for other polygonal resonators. We report on a joint experimental and theoretical study of square-shaped organic microlasers exhibiting a far-field emission that is strongly concentrated in the directions parallel to the side walls of the cavity. A semiclassical model for the far-field distributions is developed that is in agreement with even fine features of the experimental findings. Comparison of the model calculations with the experimental data allows the precise identification of the lasing modes and their emission mechanisms, providing strong support for a physically intuitive ray-dynamical interpretation. Special attention is paid to the role of diffraction and the finite side length. [less ▲]Detailed reference viewed: 10 (1 ULg) Toxicity of organometal halide perovskite solar cellsBabayigit, Aslihan; Ethirajan, Anitha; Muller, Marc et alin Nature Materials (2016), 15Detailed reference viewed: 16 (3 ULg) Seasonal variability of surface and column carbon monoxide over megacity Paris, high altitude Jungfraujoch and Southern Hemispheric Wollongong stationsTé, Y; Jeseck, P; Franco, Bruno et alin Atmospheric Chemistry & Physics Discussions (2016)Carbon monoxide (CO) is an atmospheric key species due to its toxicity and its impact on the atmospheric oxidizing capacity, both factors affecting air quality. The paper studies the altitude dependent ... [more ▼]Carbon monoxide (CO) is an atmospheric key species due to its toxicity and its impact on the atmospheric oxidizing capacity, both factors affecting air quality. The paper studies the altitude dependent seasonal variability of CO at the three different sites Paris, Jungfraujoch and Wollongong, with an emphasis on establishing a link between the CO vertical distribution and the nature of CO emission sources. The CO seasonal variability obtained from the total columns and from the free tropospheric partial columns shows a maximum around March-April and a minimum around September-October in the Northern Hemisphere (Paris and Jungfraujoch). In the Southern Hemisphere (Wollongong) this seasonal variability is shifted by about 6 months. Satellite observations by IASI-MetOp and MOPITT instruments confirm this seasonality. Ground-based FTIR is demonstrated to provide useful complementary information due to good sensitivity in the boundary layer. In situ surface measurements of CO volume mixing ratios in Paris and at Jungfraujoch reveal a time-lag of the near surface seasonal variability of about 2 months with respect to the total column variability at the same sites. The chemical transport model GEOS-Chem is employed to interpret our observations. GEOS-Chem sensitivity runs allow identifying the emission sources influencing the seasonal cycle of CO. In Paris and on top of Jungfraujoch, the surface seasonality is mainly driven by anthropogenic emissions, while the total column seasonality is also controlled by air masses transported from distant sources. In the case of Wollongong, where the CO seasonality is mainly affected by biomass burning, no time shift is observed between surface and above the boundary layer. [less ▲]Detailed reference viewed: 69 (7 ULg) Cobalt-mediated radical polymerization of vinyl acetate and acrylonitrile in supercritical carbon dioxideKermagoret; Chau, Ngoc Do Quyen; Grignard, Bruno et alin Macromolecular Rapid Communications (2016), 39(6), 539-544Cobalt-mediated radical polymerization (CMRP) of vinyl acetate (VAc) is successfully achieved in supercritical carbon dioxide (scCO 2 ). CMRP of VAc is conducted using an alkyl-cobalt(III) adduct that is ... [more ▼]Cobalt-mediated radical polymerization (CMRP) of vinyl acetate (VAc) is successfully achieved in supercritical carbon dioxide (scCO 2 ). CMRP of VAc is conducted using an alkyl-cobalt(III) adduct that is soluble in scCO2 . Kinetics studies coupled to visual observations of the polymerization medium highlight that the melt viscosity and PVAc molar mass ( Mn ) are key parameters that affect the CMRP in scCO2. It is noticed that CMRP is controlled for M n up to 10 000 g mol−1 , but loss of control is progressively observed for higher molar masses when PVAc precipitates in the polymerization medium. Low molar mass PVAc macroinitiator, prepared by CMRP in scCO2 , is then successfully used to initiate the acrylonitrile polymerization. PVAc-b-PAN block copolymer is collected as a free flowing powder at the end of the process although the dispersity of the copolymer increases with the reaction time. Although optimization is required to decrease the dispersity of the polymer formed, this CMRP process opens new perspectives for macromolecular engineering in scCO2 without the utilization of fluorinated comonomers or organic solvents. [less ▲]Detailed reference viewed: 72 (13 ULg) Nonlinear Interpolation on Manifold of Reduced Order Models in Magnetodynamic ProblemsPaquay, Yannick ; Bruls, Olivier ; Geuzaine, Christophe in IEEE Transactions on Magnetics (2016), 52(3), 1-4Detailed reference viewed: 62 (23 ULg) Comparaison de l'efficacité de deux programmes d'étirements des ischio-jambiers au suivi à deux moisDemoulin, Christophe ; Wolfs, Sébastien ; Chevalier, Madeline et alin Mains libres (2016), 1Detailed reference viewed: 42 (4 ULg) De la nécessaire articulation entre une formation théorique et une formation pratique.présentation d'un dispositif pédagogique réflexif en contexte de stages cliniquesVierset, Viviane in Pédagogie Médicale (2016)Résumé. Contexte. La formation clinique au département de Gynécologie-Obstétrique (G-O) constitue le centre du projet pédagogique mis en place avec les stagiaires de 3° master et les médecins qui les ... [more ▼]Résumé. Contexte. La formation clinique au département de Gynécologie-Obstétrique (G-O) constitue le centre du projet pédagogique mis en place avec les stagiaires de 3° master et les médecins qui les accompagnent. Problématique. Bien que la formation théorique soit organisée majoritairement sous la forme d’Apprentissage Par Problèmes (APP), d’Apprentissage du Raisonnement Clinique (ARC) et d’Apprentissage à la Résolution de Problèmes complexes (ARPc), le transfert des apprentissages n’est pas organisé sur le parcours des stages. Or, par essence, les stages cliniques correspondent au lieu de résurgence optimal des savoirs acquis et de leur mobilisation dans une logique de développement des compétences professionnelles. Finalité. Susciter l’articulation entre les lieux d’apprentissage in vitro (en laboratoire facultaire)) et in vivo (en terrain clinique) par l’apprentissage du transfert et de la pratique réflexive. Dispositif réflexif. Planifié dès 2008-2009 dans le cadre de la formation clinique des stagiaires de 3° master au sein du département de G-O, ce travail d’implantation est précédé de deux analyses, l’une concernant les besoins nécessaires à la profession (compétences professionnelles) et l’autre, les besoins des acteurs du terrain pédagogique clinique (stagiaires et superviseurs). Afin de répondre aux besoins évoqués tout en poursuivant l’objectif global du projet, le cadre conceptuel de l’Apprentissage et de l’Enseignement Contextualisé Authentiques (AECA) est proposé en tant que source de régulation du dispositif questionnant les situations vécues par l’apprenant ainsi que les postures d’apprentissage et d’accompagnement réflexifs. Bilan d’expérience. Tout en répondant à certains critères de l’AECA, le dispositif réflexif installé vise l’articulation entre les lieux de formation et propose une réponse à la plupart des besoins identifiés lors des deux analyses préliminaires. [less ▲]Detailed reference viewed: 21 (5 ULg) Mediation analysis to estimate direct and indirect milk losses associated with bacterial load in bovine subclinical mammary infectionsDetilleux, Johann ; Theron, Léonard ; Duprez, Jean-Noël et alin Animal (2016)Milk losses associated with mastitis can be attributed to either effects of pathogens per se (i.e. direct losses) or to effects of the immune response triggered by the presence of mammary pathogens (i.e ... [more ▼]Milk losses associated with mastitis can be attributed to either effects of pathogens per se (i.e. direct losses) or to effects of the immune response triggered by the presence of mammary pathogens (i.e. indirect losses). Test-day milk somatic cell counts (SCC) and number of bacterial colony forming units (CFU) found in milk samples are putative measures of the level of immune response and of the bacterial load, respectively. Mediation models, in which one independent variable affects a second variable which, in turn, affects a third one, are conceivable models to estimate direct and indirect losses. Here, we evaluated the feasibility of a mediation model in which test-day SCC and milk were regressed toward bacterial CFU measured at three selected sampling dates, 1 week apart. We applied this method on cows free of clinical signs and with records on up to 3 test-days before and after the date of the first bacteriological samples. Most bacteriological cultures were negative (52.38%), others contained either staphylococci (23.08%), streptococci (9.16%), mixed bacteria (8.79%) or were contaminated (6.59%). Only losses mediated by an increase in SCC were significantly different from null. In cows with three consecutive bacteriological positive results, we estimated a decreased milk yield of 0.28 kg per day for each unit increase in log2-transformed CFU that elicited one unit increase in log2-transformed SCC. In cows with one or two bacteriological positive results, indirect milk loss was not significantly different from null although test-day milk decreased by 0.74 kg per day for each unit increase of log2-transformed SCC. These results highlight the importance of milk losses that are mediated by an increase in SCC during mammary infection and the feasibility of decomposing total milk loss into its direct and indirect components. © The Animal Consortium 2016 [less ▲]Detailed reference viewed: 29 (0 ULg) Large elasto-optic effect and reversible electrochromism in multiferroic BiFeO3Sando, D.; Yang, Yurong; Bousquet, Eric et alin Nature Communications (2016), 7The control of optical fields is usually achieved through the electro-optic or acousto-optic effect in single-crystal ferroelectric or polar compounds such as LiNbO3 or quartz. In recent years, tremendous ... [more ▼]The control of optical fields is usually achieved through the electro-optic or acousto-optic effect in single-crystal ferroelectric or polar compounds such as LiNbO3 or quartz. In recent years, tremendous progress has been made in ferroelectric oxide thin film technology—a field which is now a strong driving force in areas such as electronics, spintronics and photovoltaics. Here, we apply epitaxial strain engineering to tune the optical response of BiFeO3 thin films, and find a very large variation of the optical index with strain, corresponding to an effective elasto-optic coefficient larger than that of quartz. We observe a concomitant strain-driven variation in light absorption—reminiscent of piezochromism—which we show can be manipulated by an electric field. This constitutes an electrochromic effect that is reversible, remanent and not driven by defects. These findings broaden the potential of multiferroics towards photonics and thin film acousto-optic devices, and suggest exciting device opportunities arising from the coupling of ferroic, piezoelectric and optical responses. [less ▲]Detailed reference viewed: 22 (6 ULg) From Valeriana officinalis to cancer therapy: the success of a bio-sourced compoundHamaïdia, Malik ; Barez, Pierre-Yves ; Carpentier, Alexandre et alin Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment (2016), 20Over the centuries, bio-sourced compounds isolated from plants, insects and microorganisms have been a potent source of drugs for the treatment of human diseases. In this review, we recapitulate the story ... [more ▼]Over the centuries, bio-sourced compounds isolated from plants, insects and microorganisms have been a potent source of drugs for the treatment of human diseases. In this review, we recapitulate the story of one of these compounds, 2-propylpentanoic acid, derived from the Valeriana officinalis flowering plant and its path to validation as a cancer treatment. [less ▲]Detailed reference viewed: 98 (40 ULg) Non-collinear magnetism in multiferroic perovskitesBousquet, Eric ; Cano, Andresin Journal of Physics : Condensed Matter (2016), 28We present an overview of the current interest in non-collinear magnetism in multiferroic perovskite crystals. We first describe the different microscopic mechanisms giving rise to the non-collinearity of ... [more ▼]We present an overview of the current interest in non-collinear magnetism in multiferroic perovskite crystals. We first describe the different microscopic mechanisms giving rise to the non-collinearity of spins in this class of materials. We discuss, in particular, the interplay between non-collinear magnetism and ferroelectric and antiferrodistortive distortions of the perovskite structure, and how this can promote magnetoelectric responses. We then provide a literature survey on non-collinear multiferroic perovskites. We discuss numerous examples of spin cantings driving weak ferromagnetism in transition metal perovskites, and of spin- induced ferroelectricity as observed in the rare-earth based perovskites. These examples are chosen to best illustrate the fundamental role of non-collinear magnetism in the design of multiferroicity. [less ▲]Detailed reference viewed: 22 (4 ULg) Towards understanding the variability in biospheric CO2 fluxes: using FTIR spectrometry and a chemical transport model to investigate the sources and sinks of carbonyl sulfide and its link to CO2Wang, Y.; Deutscher, N. M.; Palm, M. et alin Atmospheric Chemistry and Physics (2016), 16Understanding carbon dioxide (CO2) biospheric processes is of great importance because the terrestrial exchange drives the seasonal and interannual variability of CO2 in the atmosphere. Atmospheric ... [more ▼]Understanding carbon dioxide (CO2) biospheric processes is of great importance because the terrestrial exchange drives the seasonal and interannual variability of CO2 in the atmosphere. Atmospheric inversions based on CO2 concentration measurements alone can only determine net biosphere fluxes, but not differentiate between photosynthesis (uptake) and respiration (production). Carbonyl sulfide (OCS) could provide an important additional constraint: it is also taken up by plants during photosynthesis but not emitted during respiration, and therefore is a potential means to differentiate between these processes. Solar absorption Fourier Transform InfraRed (FTIR) spectrometry allows for the retrievals of the atmospheric concentrations of both CO2 and OCS from measured solar absorption spectra. Here, we investigate co-located and quasi-simultaneous FTIR measurements of OCS and CO2 performed at five selected sites located in the Northern Hemisphere. These measurements are compared to simulations of OCS and CO2 using a chemical transport model (GEOS-Chem). The coupled biospheric fluxes of OCS and CO2 from the simple biosphere model (SiB) are used in the study. The CO2 simulation with SiB fluxes agrees with the measurements well, while the OCS simulation reproduced a weaker drawdown than FTIR measurements at selected sites, and a smaller latitudinal gradient in the Northern Hemisphere during growing season when comparing with HIPPO (HIAPER Pole-to-Pole Observations) data spanning both hemispheres. An offset in the timing of the seasonal cycle minimum between SiB simulation and measurements is also seen. Using OCS as a photosynthesis proxy can help to understand how the biospheric processes are reproduced in models and to further understand the carbon cycle in the real world. [less ▲]Detailed reference viewed: 62 (16 ULg) Magnetic flux penetration in Nb superconducting films with lithographically defined micro-indentationsBrisbois, Jérémy ; Adami, Obaïd-Allah ; Avila Osses, Jonathan et alin Physical Review B (2016), 93(5), 054521We present a thorough investigation by magneto-optical imaging of the magnetic flux penetration in Nb thin films with lithographically defined border indentations. We demonstrate that discontinuity lines ... [more ▼]We present a thorough investigation by magneto-optical imaging of the magnetic flux penetration in Nb thin films with lithographically defined border indentations. We demonstrate that discontinuity lines (d-lines), caused by the abrupt bending of current streamlines around the indentations, depart from the expected parabolic trend close to the defect and depend on the shape and size of the indentation as well as on the temperature. These findings are backed up and compared with theoretical results obtained by numerical simulations and analytical calculations highlighting the key role played by demagnetization effects and the creep exponent n. In addition, we show that the presence of nearby indentations and submicrometer random roughness of the sample border can severely modify the flux front topology and dynamics. Strikingly, in contrast to what has been repeatedly predicted in the literature, we do not observe that indentations act as nucleation spots for flux avalanches, but they instead help to release the flux pressure and avoid thermomagnetic instabilities. [less ▲]Detailed reference viewed: 103 (35 ULg) Doping TiO2 films with carbon nanotubes to simultaneously optimise antistatic, photocatalytic and superhydrophilic propertiesLéonard, Géraldine ; Remy, Simon; Heinrichs, Benoît in Journal of Sol-Gel Science and Technology (2016)Pure and multiwall carbon nanotube (MWCNT)- doped titanium dioxide (TiO2) films, synthesised from two sol–gel routes (alcoholic and aqueous) and deposited by dipcoating on glass, have been developed as ... [more ▼]Pure and multiwall carbon nanotube (MWCNT)- doped titanium dioxide (TiO2) films, synthesised from two sol–gel routes (alcoholic and aqueous) and deposited by dipcoating on glass, have been developed as conductive, photocatalytic and superhydrophilic materials. While already crystallised in anatase structure at low temperature when synthesised in water, samples prepared in alcohol are amorphous. Their crystallisation in air has been studied at increasing temperatures. Effective incorporation of functionalised MWCNTs is confirmed in both aqueous and alcoholic samples with a closer interaction with TiO2 particles in the case of aqueous synthesis. In alcoholic samples, 400 C seems to be an optimised calcination temperature since 300 C does not allow crystallisation into anatase and 500 C removes MWCNTs through burning. The purpose of MWCNT doping is to obtain coatings that exhibit easy-toclean or self-cleaning properties. This can be achieved through an optimised combination of electrical conductivity (for antistatic property), photoactivity and superhydrophilicity. These three properties require the crystallisation of TiO2 into anatase. MWCNT doping dramatically increases both conductivity and photocatalytic activity, especially in alcoholic samples for the former and in aqueous samples for the latter. On the other hand, MWCNT introduction does not significantly affect the (super)hydrophilicity of films, which depends solely on the crystallinity of TiO2. [less ▲]Detailed reference viewed: 42 (12 ULg) Identification of Shiga toxin-producing (STEC) and enteropathogenic (EPEC) Escherichia coli in diarrhoeic calves and comparative genomics of O5 bovine and human STECFakih, Ibrahim; Thiry, Damien ; Duprez, Jean-Noël et alin Veterinary Microbiology (2016)Escherichia coli producing Shiga toxins (Stx) and the attaching-effacing (AE) lesion (AE-STEC) are responsible for (bloody) diarrhoea in humans and calves while the enteropathogenic E. coli (EPEC ... [more ▼]Escherichia coli producing Shiga toxins (Stx) and the attaching-effacing (AE) lesion (AE-STEC) are responsible for (bloody) diarrhoea in humans and calves while the enteropathogenic E. coli (EPEC) producing the AE lesion only cause non-bloody diarrhoea in all mammals. The purpose of this study was (i) to identify the pathotypes of enterohaemolysin-producing E. coli isolated between 2009 and 2013 on EHLY agar from less than 2 month-old diarrhoeic calves with a triplex PCR targeting the stx1, stx2, eae virulence genes; (ii) to serotype the positive isolates with PCR targeting the genes coding for ten most frequent and pathogenic human and calf STEC O serogroups; and (iii) to compare the MLSTypes and virulotypes of calf and human O5 AE-STEC after Whole Genome Sequencing using two server databases (www.genomicepidemiology.org). Of 233 isolates, 206 were triplex PCR-positive: 119 AE-STEC (58%), 78 EPEC (38%) and 9 STEC (4%); and the stx1+eae+ AE-STEC (49.5%) were the most frequent. Of them, 120 isolates (84% of AE-STEC, 23% of EPEC, 22% of STEC) tested positive with one O serogroup PCR: 57 for O26 (47.5%), 36 for O111 (30%), 10 for O103 (8%) and 8 for O5 (7%) serogroups. The analysis of the draft sequences of 15 O5 AE-STEC could not identify any difference correlated to the host. As a conclusion, (i) the AE-STEC associated with diarrhoea in young calves still belong to the same serogroups as previously (O5, O26, O111) but the O103 serogroup may be emerging, (ii) the O5 AE-STEC from calves and humans are genetically similar [less ▲]Detailed reference viewed: 15 (5 ULg) Integrin αvβ3 and RGD-based radiopharmaceuticalsWITHOFS, Nadia ; HUSTINX, Roland in Médecine Nucléaire : Imagerie Fonctionnelle et Métabolique (2016), 40 (2016)Positron emission tomography combined with computed tomography (PET/CT) using RGD-based radiopharmaceuticals allows quantification of tumour expression of integrin αvβ3 in vivo. Integrins and, in ... [more ▼]Positron emission tomography combined with computed tomography (PET/CT) using RGD-based radiopharmaceuticals allows quantification of tumour expression of integrin αvβ3 in vivo. Integrins and, in particular, integrin αvβ3 are involved in numerous physiologic and pathologic processes, including angiogenesis. RGD-based radiopharmaceuticals targeting integrin αvβ3, expressed by activated endothelial cells, have been developed in order to quantify angiogenesis. However, integrin αvβ3 is also frequently expressed by tumour cells and/or tumour microenvironment cells, e.g., bone marrow derived cells and osteoclasts in bone. Upregulation of integrin αvβ3 by tumour cells promotes cell survival, proliferation, invasion, metastasis and resistance to treatment. Therefore, the PET signal related to RGD-based radiopharmaceuticals may not reflect angiogenesis only. Moreover, tumours may develop mechanisms other than angiogenesis to ensure blood supply such as vascular mimicry, vessel co-option and intussusceptive angiogenesis that might not be assessed with RGD PET/CT. In the setting of treatment assessment, a drop of the RGD PET signal certainly means tumour response (endothelial and/or tumour cell apoptosis and/or vessel normalisation). On the other hand, a stable or increased RGD PET signal may be related to absence of response or upregulation of integrin αvβ3 in adaptative response to therapy, promoting resistance. This review illustrates the complexity of the role of integrin αvβ3 in oncology and its role in non-oncologic diseases such as osteoarthtitis and cardiovascular diseases. [less ▲]Detailed reference viewed: 33 (11 ULg) Glycosyltransferases and Transpeptidases/Penicillin-Binding Proteins: Valuable Targets for New Antibacterials.Sauvage, Eric ; Terrak, Mohammed in Antibiotics (2016), 5(1), Peptidoglycan (PG) is an essential macromolecular sacculus surrounding most bacteria. It is assembled by the glycosyltransferase (GT) and transpeptidase (TP) activities of multimodular penicillin-binding ... [more ▼]Peptidoglycan (PG) is an essential macromolecular sacculus surrounding most bacteria. It is assembled by the glycosyltransferase (GT) and transpeptidase (TP) activities of multimodular penicillin-binding proteins (PBPs) within multiprotein complex machineries. Both activities are essential for the synthesis of a functional stress-bearing PG shell. Although good progress has been made in terms of the functional and structural understanding of GT, finding a clinically useful antibiotic against them has been challenging until now. In contrast, the TP/PBP module has been successfully targeted by beta-lactam derivatives, but the extensive use of these antibiotics has selected resistant bacterial strains that employ a wide variety of mechanisms to escape the lethal action of these antibiotics. In addition to traditional beta-lactams, other classes of molecules (non-beta-lactams) that inhibit PBPs are now emerging, opening new perspectives for tackling the resistance problem while taking advantage of these valuable targets, for which a wealth of structural and functional knowledge has been accumulated. The overall evidence shows that PBPs are part of multiprotein machineries whose activities are modulated by cofactors. Perturbation of these systems could lead to lethal effects. Developing screening strategies to take advantage of these mechanisms could lead to new inhibitors of PG assembly. In this paper, we present a general background on the GTs and TPs/PBPs, a survey of recent issues of bacterial resistance and a review of recent works describing new inhibitors of these enzymes. [less ▲]Detailed reference viewed: 14 (1 ULg) Phenotypic characterization of the indigenous chickens (Gallus gallus) in the northwest of AlgeriaDalhoum, L.; Moula, Nassim ; Halbouche, M. et alin Archiv für Tierzucht = Archives Animal Breeding (2016), 59This study was conducted to characterize local chickens in the northwest of Algeria based on some phenotypic traits and to look at prediction of body weight from morphometric measurements (linear body ... [more ▼]This study was conducted to characterize local chickens in the northwest of Algeria based on some phenotypic traits and to look at prediction of body weight from morphometric measurements (linear body). The results indicated that the predominant comb colour was dark red (77.8%), followed by light red (22.2%). Tarsus colour was either white (40.9%), grey (31%), yellow (15.39%), dark (8.05%), or green (4.51%). Most chickens (81.7%) had orange eyes, while 10.37 and 7.92% had yellow and dark-brown eyes, respectively. The dominant earlobe colour was white (73.96%), followed by red (16.81%). The remaining proportion included yellow and red-mottled yellow and black earlobes. Proportions of the adaptive genes were low. Incidences of Na, F, Pti, Cr, R, and P genes were 8.82, 0.45, 1.22, 5.54, 3.35, and 4.7%, respectively. The calculated gene frequencies ranged from 0.002 to 0.045. Variations were also found in quantitative morphological traits. Sex-associated differences (P<0.001) were observed in almost all the parameters evaluated with higher values recorded for males. Phenotypic correlations of body weight and biometric traits ranged from −0.13 to 0.88 and −0.15 to 0.97 for males and females, respectively. From the factor analysis with varimax rotation of the intercorrelated traits, three principal components which accounted for 71.6 and 73.2% of the total variance were extracted in males and females, respectively. Orthogonal body shape characters derived from the factor analysis accounted for 84.3 and 94.2% of the variation in body weight of males and females, respectively. Information obtained from this study could be useful in an appropriate management, breeding programmes for selection and utilization of Algerian chicken genetic resources. [less ▲]Detailed reference viewed: 48 (9 ULg) Thermal and quantum depletion of superconductivity in narrow junctions created by controlled electromigrationBaumans, Xavier ; Cerbu, Dorin; Adami, Obaïd-Allah et alin Nature Communications (2016), 7Superconducting nanowires currently attract great interest due to their application in single-photon detectors and quantum-computing circuits. In this context, it is of fundamental importance to ... [more ▼]Superconducting nanowires currently attract great interest due to their application in single-photon detectors and quantum-computing circuits. In this context, it is of fundamental importance to understand the detrimental fluctuations of the superconducting order parameter as the wire width shrinks. In this paper, we use controlled electromigration to narrow down aluminium nanoconstrictions. We demonstrate that a transition from thermally assisted phase slips to quantum phase slips takes place when the cross section becomes less than 150 nm2 . In the regime dominated by quantum phase slips the nanowire loses its capacity to carry current without dissipation, even at the lowest possible temperature. We also show that the constrictions exhibit a negative magnetoresistance at low-magnetic fields, which can be attributed to the suppression of superconductivity in the contact leads. These findings reveal perspectives of the proposed fabrication method for exploring various fascinating superconducting phenomena in atomic-size contacts. [less ▲]Detailed reference viewed: 77 (30 ULg) One decade of active avian influenza wild bird surveillance in Belgium showed a higher viroprevalence in hunter-harvested than live-ringed birdsSteensels, Mieke; Vangeluwe, Didier; Linden, Annick et alin Avian Diseases (2016), 60(1s), 387-393Detailed reference viewed: 14 (1 ULg) Nanocarriers for the treatment of glioblastoma multiforme: Current state-of-the-artKarim, Reatul ; Palazzo, Claudio ; Evrard, Brigitte et alin Journal of Controlled Release (2016)Glioblastoma multiforme, a grade IV glioma, is the most frequently occurring and invasive primary tumor of the central nervous system, which causes about 4% of cancer-associated-deaths, making it one of ... [more ▼]Glioblastoma multiforme, a grade IV glioma, is the most frequently occurring and invasive primary tumor of the central nervous system, which causes about 4% of cancer-associated-deaths, making it one of the most fatal cancers. With present treatments, using state-of-theart technologies, the median survival is about 14 months and 2 year survival rate is merely 3–5%. Hence, novel therapeutic approaches are urgently necessary. However, most drug molecules are not able to cross the blood–brain barrier, which is one of the major difficulties in glioblastoma treatment. This review describes the features of blood–brain barrier, and its anatomical changes with different stages of tumor growth. Moreover, various strategies to improve brain drug delivery i.e. tight junction opening, chemical modification of the drug, efflux transporter inhibition, convection-enhanced delivery, craniotomy-based drug delivery and drug delivery nanosystems are discussed. Nanocarriers are one of the highly potential drug transport systems that have gained huge research focus over the last few decades for site specific drug delivery, including drug delivery to the brain. Properly designed nanocolloids are capable to cross the blood–brain barrier and specifically deliver the drug in the brain tumor tissue. They can carry both hydrophilic and hydrophobic drugs, protect them from degradation, release the drug for sustained period, significantly improve the plasma circulation half-life and reduce toxic effects. Among various nanocarriers, liposomes, polymeric nanoparticles and lipid nanocapsules are the most widely studied, and are discussed in this review. For each type of nanocarrier, a general discussion describing their composition, characteristics, types and various uses is followed by their specific application to glioblastoma treatment. Moreover, some of the main challenges regarding toxicity and standardized evaluation techniques are narrated in brief. [less ▲]Detailed reference viewed: 77 (23 ULg) Invasive occipital nerve stimulation for refractory chronic cluster headache: what evolution at long-term? Strengths and weaknesses of the method.MAGIS, Delphine ; Gerard, Pascale; Schoenen, Jean in Journal of Headache & Pain (2016)BACKGROUND: Invasive Occipital Nerve Stimulation (iONS) is a costly technique which appears effective in drug-refractory chronic cluster headache (drCCH) management. Available data on long-term ... [more ▼]BACKGROUND: Invasive Occipital Nerve Stimulation (iONS) is a costly technique which appears effective in drug-refractory chronic cluster headache (drCCH) management. Available data on long-term effectiveness and safety of iONS in this indication are scarce, though they could be useful to neurologists and patients in daily practice. The purpose of this short report is to discuss the very long-term outcome of a drCCH cohort, including adverse events. FINDINGS: Previously, favourable results were obtained with iONS in 15 drCCH patients: 80 % were significantly improved and 60 % were pain free. We report here the very long-term follow-up (up to nine years) of 10 patients belonging to this cohort. Meanwhile 5 patients had to be definitively explanted because of device infection (3) or paresthesia intolerance (2). Four patients (40 %) evolved to an episodic form of CH. Six remained chronic but their attack frequency was decreased by 70 % on average. Intake of preventive drugs is still necessary in 80 % of patients. All patients needed at least one battery replacement. CONCLUSIONS: Up to nine years after implantation, iONS is still effective in most patients with drCCH. Concomitant preventive drugs remain often necessary. Forty percent of patients reverse to episodic CH, possibly by natural history. iONS is not a benign procedure but device-related complications appear similar to those reported with other invasive neurostimulators. [less ▲]Detailed reference viewed: 11 (2 ULg) Foraging wireworms are attracted to root-produced volatile aldehydesBarsics, Fanny ; Delory, Benjamin M.; Delaplace, Pierre et alin Journal of Pest Science (2016)Soil-dwelling insects are known to react to chemical cues they encounter in the rhizosphere. Whether wireworms (Coleoptera, Elateridae) use root-emitted volatile organic chemicals to localize their host ... [more ▼]Soil-dwelling insects are known to react to chemical cues they encounter in the rhizosphere. Whether wireworms (Coleoptera, Elateridae) use root-emitted volatile organic chemicals to localize their host plant remains, however, poorly understood. Here, we aimed at identifying chemical cues released by barley roots that attract Agriotes sordidus. In a first behavioral experiment, we assessed the ability of wireworms to orient towards live barley roots, using dual-choice olfactometers suitable for belowground insects. Then, we collected the volatile organic compounds (VOC) produced by barley roots using a dynamic head-space sampling approach. VOC were quantified and identified using gas chromatography—mass spectrometry (GC–MS). The odorant blend is composed of four aldehydes, namely hexanal, (E)-hex-2-enal, (E)-non-2-enal, and (E,Z)-nona-2,6-dienal. In a second set of dual-choice bioassays, wireworms were attracted towards a synthetic blend of these four major compounds. However, the synthetic blend was not as attractive as live roots, which is partially explained by the absence of CO2, commonly known as a strong attractant for soil-dwelling insects. While CO2 indicates the presence of living material in the vicinity, we hypothesize that additional VOC inform about the plant suitability. A better understanding of these belowground signals would contribute to the development of new integrated control strategies against wireworms. [less ▲]Detailed reference viewed: 41 (4 ULg) Thermally induced magnetization switching in Gd/Fe multilayersXu, Chudong; Ostler, Thomas ; Chantrell, Royin Physical Review B (2016), 93A theoretical model of Gd/Fe multilayers is constructed using the atomistic spin dynamics formalism. By varying the thicknesses and number of layers we have shown that a strong dependence of the energy ... [more ▼]A theoretical model of Gd/Fe multilayers is constructed using the atomistic spin dynamics formalism. By varying the thicknesses and number of layers we have shown that a strong dependence of the energy required for thermally induced magnetization switching (TIMS) is present;with a larger number of interfaces, lower energy is required. The results of the layer resolved dynamics show that the reversal process of the multilayered structures, similar to that of a GdFeCo alloy, is driven by the antiferromagnetic interaction between the transition-metal and rare-earth components. Finally, while the presence of the interface drives the reversal process, we show here that the switching process does not initiate at the surface but from the layers furthest from it, a departure from the alloy behavior which expands the classes of material types exhibiting TIMS. [less ▲]Detailed reference viewed: 15 (1 ULg) Witnessing Fukushima Secondhand: Collage, Archive and Travelling Memory in Jacques Ristorcelli’s Les ÉcransCrucifix, Benoît in The Comics Grid: Journal of Comics Scholarship (2016), 6Cultural memory in comics studies mostly seems to revolve around nonfictional graphic novels tackling major historical events. Drawing on recent trends in cultural memory studies, this paper focuses on ... [more ▼]Cultural memory in comics studies mostly seems to revolve around nonfictional graphic novels tackling major historical events. Drawing on recent trends in cultural memory studies, this paper focuses on Jacques Ristorcelli‘s Les Écrans (2014) as an experimental counterpoint where memory is animated by the author’s use of collage. Delving into an ‘archive’ of heterogeneous elements, Les Écrans borrows from old war comics in a way that reflexively constructs a discourse on the past of the medium and its memory. Through the analysis of Ristorcelli’s book, this paper highlights how collage can function in comics as a work of memory that reaches back to appropriative practices common to both readers and fine artists. [less ▲]Detailed reference viewed: 34 (6 ULg) Benevolent Ideology and Women’s Economic Decision-Making: When Sexism Is Hurting Men’s WalletSilvestre, Aude ; Sarlet, Marie; Huart, Johanne et alin PLoS ONE (2016), 11(2), Can ideology, as a widespread “expectation creator,” impact economic decisions? In two studies we investigated the influence of the Benevolent Sexism (BS) ideology (which dictates that men should provide ... [more ▼]Can ideology, as a widespread “expectation creator,” impact economic decisions? In two studies we investigated the influence of the Benevolent Sexism (BS) ideology (which dictates that men should provide for passive and nurtured women) on women’s economic decision- making. In Study 1, using a Dictator Game in which women decided how to share amounts of money with men, results of a Generalized Linear Mixed Model analysis show that higher endorsement of BS and contextual expectations of benevolence were associated with more very unequal offers. Similarly, in an Ultimatum Game in which women received monetary offers from men, Study 2’s Generalized Linear Mixed Model’s results revealed that BS led women to reject more very unequal offers. If women’s endorsement of BS ideology and expectations of benevolence prove contrary to reality, they may strike back at men. These findings show that BS ideology creates expectations that shape malefemale relationships in a way that could be prejudicial to men. [less ▲]Detailed reference viewed: 39 (10 ULg) Thermally induced magnetization switching in Gd/Fe multilayersXu, Chudong; Ostler, Thomas ; Chantrell, Royin Physical Review B (2016), 93A theoretical model of Gd/Fe multilayers is constructed using the atomistic spin dynamics formalism. By varying the thicknesses and number of layers we have shown that a strong dependence of the energy ... [more ▼]A theoretical model of Gd/Fe multilayers is constructed using the atomistic spin dynamics formalism. By varying the thicknesses and number of layers we have shown that a strong dependence of the energy required for thermally induced magnetization switching (TIMS) is present;with a larger number of interfaces, lower energy is required. The results of the layer resolved dynamics show that the reversal process of the multilayered structures, similar to that of a GdFeCo alloy, is driven by the antiferromagnetic interaction between the transition-metal and rare-earth components. Finally, while the presence of the interface drives the reversal process, we show here that the switching process does not initiate at the surface but from the layers furthest from it, a departure from the alloy behavior which expands the classes of material types exhibiting TIMS. [less ▲]Detailed reference viewed: 15 (1 ULg) Solubility and speciation of ketoprofen and aspirin in supercritical CO2 by infrared spectroscopyChampeau, Mathilde; Thomassin, Jean-Michel ; Jérôme, Christine et alin Journal of Chemical & Engineering Data (2016), 61(2), 968-978The solubility of ketoprofen and aspirin in subcritical and supercritical CO2 was measured using FTIR absorption spectroscopy in the large range of temperature of 298.2−353.2 K and pressure of 5−35 MPa ... [more ▼]The solubility of ketoprofen and aspirin in subcritical and supercritical CO2 was measured using FTIR absorption spectroscopy in the large range of temperature of 298.2−353.2 K and pressure of 5−35 MPa. The evolution of the solubility of both active pharmaceutical ingredients (APIs) was fitted using the Chrastil’s equation. In addition, the speciation of both APIs in monomeric and dimeric forms was explored by analyzing the characteristic carbonyl stretching vibrations of the carboxylic acid functions assigned to the dimers and monomers, respectively. Moreover, the evolution of the dimerization constant K of the two drugs as a function of the temperature and the pressure of scCO2 has been reported. [less ▲]Detailed reference viewed: 40 (6 ULg) Effect of ultrafiltration process on physico-chemical, rheological, microstructure and thermal properties of syrups from male and female date palm sapsMakhlouf-Gafsi, Ines; Baklouti, Samia; Mokni, Abir et alin Food Chemistry (2016), 203This study investigates the effect of the ultrafiltration process on physicochemical, rheological, microstructure and thermal properties of syrups from male and female date palm sap. All the studied ... [more ▼]This study investigates the effect of the ultrafiltration process on physicochemical, rheological, microstructure and thermal properties of syrups from male and female date palm sap. All the studied syrups switched from pseudoplastic rheological behaviour (n = 0.783) to Newtonian behaviour (n〰1) from 10 to 50 s‾1 respectively and present similar thermal profiles. Results revealed that the ultrafiltration process significantly affects the rheological behaviour of the male and female syrups. These differences on rheological properties are attributed to the variation of chemical composition between sap and sap permeate syrups. Furthermore, the effect of temperature on viscosity of the syrups was investigated during heating and cooling processes at the same shear rate (50 s 1). This study provides idea of the stability of the syrup by evaluating the area between heating and cooling curves. Actually, the syrup prepared from male sap permeate is the most stable between the four studied syrups. [less ▲]Detailed reference viewed: 19 (1 ULg) Comprehensive study of the thermo-reversibility of Diels-Alder based PCL polymer networksDefize, Thomas ; Thomassin, Jean-Michel ; Alexandre, Michaël et alin Polymer (2016), 84Chemical crosslinking is an efficient tool to improve or impart new properties to conventional polymers. Especially, crosslinking imparts remarkable shapeememory properties to poly-ε-caprolactone (PCL ... [more ▼]Chemical crosslinking is an efficient tool to improve or impart new properties to conventional polymers. Especially, crosslinking imparts remarkable shapeememory properties to poly-ε-caprolactone (PCL) materials. Nevertheless, the processing of networks is often tricky due to infusibility and insolubility of cross-linked chains. Therefore, the synthesis of PCL networks including thermo-reversible crosslinks based on (retro)-Diels-Alder (DA) reaction were developed to allowpreserving the melt-processing while keeping the required mechanical properties below the melting point. This paper aims at studying in depth, such thermo-dependent network formation and stability. Besides conventional swelling experi- ments, Raman spectroscopy was revealed as a powerful tool to follow the formation of the DA adduct during the crosslinking. In combination with rheological measurements, we were able to determine the most appropriate temperatures to form the network (DA crosslinking) and to process it (retro-DA re- action) without degradation of the material. [less ▲]Detailed reference viewed: 46 (4 ULg) Heuristique des genres : empirie et transcendance. Compte rendu de Ablali (Driss), Badir (Sémir) & Ducard (Dominique) dir., En tous genres. Normes, textes, médiations, Louvain-la-Neuve, Academia-L’Harmattan, coll. « Sciences du langage : Carrefours et points de vue », 2015, 248pFranck, Thomas in COnTEXTES : Revue de Sociologie de la Littérature (2016)Detailed reference viewed: 114 (85 ULg) Assessing and modeling economic and environmental impact of wheat nitrogen management in BelgiumDumont, Benjamin ; Basso, Bruno; Bodson, Bernard et alin Environmental Modelling & Software (2016), 79Future progress in wheat yield will rely on identifying genotypes and management practices better adapted to the fluctuating environment. Nitrogen (N) fertilization is probably the most important practice ... [more ▼]Future progress in wheat yield will rely on identifying genotypes and management practices better adapted to the fluctuating environment. Nitrogen (N) fertilization is probably the most important practice impacting crop growth. However, the adverse environmental impacts of inappropriate N management (e.g., lixiviation) must be considered in the decision-making process. A formal decisional algorithm was developed to tactically optimize the economic and environmental N fertilization in wheat. Climatic uncertainty analysis was performed using stochastic weather time-series (LARS-WG). Crop growth was simulated using STICS model. Experiments were conducted to support the algorithm recommendations: winter wheat was sown between 2008 and 2014 in a classic loamy soil of the Hesbaye Region, Belgium (temperate climate). Results indicated that, most of the time, the third N fertilization applied at flag-leaf stage by farmers could be reduced. Environmental decision criterion is most of the time the limiting factor in comparison to the revenues expected by farmers. [less ▲]Detailed reference viewed: 24 (4 ULg) Seasonality in human cognitive brain responsesMeyer, Christelle ; Muto, Vincenzo ; Jaspar, Mathieu et alin Proceedings of the National Academy of Sciences of the United States of America (2016)Detailed reference viewed: 104 (11 ULg) Comparison of explant responses treated with leachate and leonardite sources of humic substances during in vitro rooting of woody plants.Tahiri, Abdelghani ; Destain, Jacqueline ; Thonart, Philippe et alin Communications in Agricultural and Applied Biological Sciences (2016), 81(1), 158-165As heterogeneous mixtures of compounds resulting from the physical, chemical and microbiological transformations of organic residues, humic substances (HS) are mostly recognized for their biostimulation ... [more ▼]As heterogeneous mixtures of compounds resulting from the physical, chemical and microbiological transformations of organic residues, humic substances (HS) are mostly recognized for their biostimulation of plant growth that firstly involve the root development and architecture before further putative improvement of nutrients uptakes. To avoid the interferences currently reported from external origins, the successive steps of rooting have been carried out using shoots and isolated leaves of birch and alder vitro-plants. Extracts issued from landfill leachate (LHS) has been compared to a stable formulation from leonardite ("Humifirst" 12% humic acid 3% and fulvic acid) commercialized by TRADECORP company's (HHS). Chemical analysis showed that LHS source typically contain much higher N (mainly as ammonium (93%) and chloride concentration than HHS. Used at low concentration (10 ppm) during root induction/initiation phase, both HS sources may be slightly unfavorable to the root formation (21% of reduction in primary root number) of alder but not of birch. While, in root elongation phase, there is an increase in the primary root length and lateral root number. The direct effects of HS on in vitro root development vary from one species to another depending on the root treatment stage. Results showed that both explants type response are equivalent in the development of a complete rooting system. [less ▲]Detailed reference viewed: 55 (1 ULg) LE PASSÉ, LE PRÉSENT ET L’AVENIR DE LA TRADUCTION AU CAMEROUNOumarou Mal Mazou, Rachid in Atelier de Traduction (2016), n°24The inactement of institutional bilingualism by the Constitution exposes Cameroon to translation every day, as all official texts/speeches produced in one of the two official languages (French and English ... [more ▼]The inactement of institutional bilingualism by the Constitution exposes Cameroon to translation every day, as all official texts/speeches produced in one of the two official languages (French and English) must be translated into the other. This translation demand requires translators and training of translators/interpreters becomes compulsory. First Cameroonian translators were initially trained in universities and colleges abroad and later on, after independence, at home when the Advanced School of Translators and Interpreters (ASTI) was created in the mid 1980s. The main objective of the school was to train translators/interpreters for public service. This goal will lapse when the Government decided not to enroll systematically ASTI graduates in 1999. Meanwhile, other private institutes as ISTI of Yaoundé, or programs like those of the University of Yaounde I opened their doors with curricula almost modeled on that of ASTI. Moreover, there is no regulation body for the profession, the only professional associtation that has been existing since the 90s is yet to find its way. This communication aims at looking into the development of translation in Cameroon from independence. Some suggestions are also made towards the future of the profession in one of the few countries where bilingualism is institutional and whereby about 300 local languages interact in a daily basis. [less ▲]Detailed reference viewed: 30 (1 ULg) The MiMeS survey of magnetism in massive stars: introduction and overviewWade, G. A.; Neiner, C.; Alecian, E. et alin Monthly Notices of the Royal Astronomical Society (2016), 456The MiMeS (Magnetism in Massive Stars) project is a large-scale, high-resolution, sensitive spectropolarimetric investigation of the magnetic properties of O- and early B-type stars. Initiated in 2008 and ... [more ▼]The MiMeS (Magnetism in Massive Stars) project is a large-scale, high-resolution, sensitive spectropolarimetric investigation of the magnetic properties of O- and early B-type stars. Initiated in 2008 and completed in 2013, the project was supported by three Large Program allocations, as well as various programmes initiated by independent principal investigators, and archival resources. Ultimately, over 4800 circularly polarized spectra of 560 O and B stars were collected with the instruments ESPaDOnS (Echelle SpectroPolarimetric Device for the Observation of Stars) at the Canada-France-Hawaii Telescope, Narval at the Télescope Bernard Lyot and HARPSpol at the European Southern Observatory La Silla 3.6 m telescope, making MiMeS by far the largest systematic investigation of massive star magnetism ever undertaken. In this paper, the first in a series reporting the general results of the survey, we introduce the scientific motivation and goals, describe the sample of targets, review the instrumentation and observational techniques used, explain the exposure time calculation designed to provide sensitivity to surface dipole fields above approximately 100 G, discuss the polarimetric performance, stability and uncertainty of the instrumentation, and summarize the previous and forthcoming publications. [less ▲]Detailed reference viewed: 29 (6 ULg) Fe XXV line profiles in colliding wind binariesRauw, Grégor ; Mossoux, Enmanuelle; Nazé, Yaël in New Astronomy (2016), 43Strong wind-wind collisions in massive binaries generate a very hot plasma that frequently produces a moderately strong iron line. The morphology of this line depends upon the properties of the wind ... [more ▼]Strong wind-wind collisions in massive binaries generate a very hot plasma that frequently produces a moderately strong iron line. The morphology of this line depends upon the properties of the wind interaction zone and its orientation with respect to the line of sight. As the binary components revolve around their common centre of mass, the line profiles are thus expected to vary. With the advent of the next generation of X-ray observatories (Astro-H, Athena) that will offer high-resolution spectroscopy above 6 keV, it will become possible to exploit these changes as the most sensitive probe of the inner parts of the colliding wind interaction. Using a simple prescription of the wind-wind interaction in an early-type binary, we have generated synthetic line profiles for a number of configurations and orbital phases. These profiles can help constrain the properties of the stellar winds in such binary systems. [less ▲]Detailed reference viewed: 39 (3 ULg) Two Small Temperate Planets Transiting Nearby M Dwarfs in K2 Campaigns 0 and 1Schlieder, Joshua E.; Crossfield, Ian J. M.; Petigura, Erik A. et alin Astrophysical Journal (2016), 818The prime Kepler mission revealed that small planets (<4 {R}[SUB]\oplus [/SUB]) are common, especially around low-mass M dwarfs. K2, the repurposed Kepler mission, continues this exploration of small ... [more ▼]The prime Kepler mission revealed that small planets (<4 {R}[SUB]\oplus [/SUB]) are common, especially around low-mass M dwarfs. K2, the repurposed Kepler mission, continues this exploration of small planets around small stars. Here we combine K2 photometry with spectroscopy, adaptive optics imaging, and archival survey images to analyze two small planets orbiting the nearby field-age M dwarfs, K2-26 (EPIC 202083828) and K2-9. K2-26 is an {{M}}1.0+/- 0.5 dwarf at 93 ± 7 pc from K2 Campaign 0. We validate its planet with a day period of 14.5665 and estimate a radius of {2.67}[SUB]-0.42[/SUB][SUP]+0.46[/SUP] {R}[SUB]\oplus [/SUB]. K2-9 is an {{M}}2.5+/- 0.5 dwarf at 110 ± 12 pc from K2 Campaign 1. K2-9b was first identified by Montet et al.; here we present spectra and adaptive optics imaging of the host star and independently validate and characterize the planet. Our analyses indicate K2-9b is a {2.25}[SUB]-0.96[/SUB][SUP]+0.53[/SUP] {R}[SUB]\oplus [/SUB] planet with a 18.4498 day period. K2-26b exhibits a transit duration that is too long to be consistent with a circular orbit given its measured stellar radius. Thus, the long transits are likely due to the photoeccentric effect and our transit fits hint at an eccentric orbit. Both planets receive low incident flux from their host stars and have estimated equilibrium temperatures <500 K. K2-9b may receive approximately Earth-like insolation. However, its host star exhibits strong GALEX UV emission which could affect any atmosphere it harbors. K2-26b and K2-9b are representatives of a poorly studied class of small planets with cool temperatures that have radii intermediate to Earth and Neptune. Future study of these systems can provide key insight into trends in bulk composition and atmospheric properties at the transition from silicate dominated to volatile rich bodies. Based on observations collected at the European Organization for Astronomical Research in the Southern Hemisphere, La Silla Observatory, Chile during program ID 194.C-0443. [less ▲]Detailed reference viewed: 12 (2 ULg) The LEECH Exoplanet Imaging Survey: Orbit and Component Masses of the Intermediate-age, Late-type Binary NO UMaSchlieder, Joshua E.; Skemer, Andrew J.; Maire, Anne-Lise et alin Astrophysical Journal (2016), 818We present high-resolution Large Binocular Telescope LBTI/LMIRcam images of the spectroscopic and astrometric binary NO UMa obtained as part of the LBT Interferometer Exozodi Exoplanet Common Hunt ... [more ▼]We present high-resolution Large Binocular Telescope LBTI/LMIRcam images of the spectroscopic and astrometric binary NO UMa obtained as part of the LBT Interferometer Exozodi Exoplanet Common Hunt exoplanet imaging survey. Our H-, K[SUB]s[/SUB]-, and L‧-band observations resolve the system at angular separations <0.″09. The components exhibit significant orbital motion over a span of ∼7 months. We combine our imaging data with archival images, published speckle interferometry measurements, and existing spectroscopic velocity data to solve the full orbital solution and estimate component masses. The masses of the K2.0 ± 0.5 primary and K6.5 ± 0.5 secondary are 0.83 ± 0.02 M[SUB]⊙[/SUB] and 0.64 ± 0.02 M[SUB]⊙[/SUB], respectively. We also derive a system distance of d = 25.87 ± 0.02 pc and revise the Galactic kinematics of NO UMa. Our revised Galactic kinematics confirm NO UMa as a nuclear member of the ∼500 Myr old Ursa Major moving group, and it is thus a mass and age benchmark. We compare the masses of the NO UMa binary components to those predicted by five sets of stellar evolution models at the age of the Ursa Major group. We find excellent agreement between our measured masses and model predictions with little systematic scatter between the models. NO UMa joins the short list of nearby, bright, late-type binaries having known ages and fully characterized orbits. Based on data obtained with the STELLA robotic telescope in Tenerife, an AIP facility jointly operated by AIP and IAC. [less ▲]Detailed reference viewed: 11 (1 ULg) Diversity and ecology survey of mosquitoes potential vectors in Belgian equestrian farms: A threat prevention of mosquito-borne equine arbovirusesBoukraa, Slimane ; de la Grandière, Maria Ana ; Bawin, Thomas et alin Preventive Veterinary Medicine (2016), 124Emergence of West Nile Virus was recently recorded in several European countries, which can lead to severe health problems in horse populations. Europe is also at risk of introduction of mosquito-borne ... [more ▼]Emergence of West Nile Virus was recently recorded in several European countries, which can lead to severe health problems in horse populations. Europe is also at risk of introduction of mosquito-borne equine alphavirus from Americas. Prevention of these arboviruses requires a clear understanding of transmission cycles, especially their vectors. To characterize mosquito fauna, their ecology and identify potential vectors of equine arboviruses in Belgium, entomological surveys of six equestrian farms located in the Wolloon Region were conducted during 2011–2012. The harvest of mosquitoes was based on larval sampling (272 samples from 111 breeding sites) and monthly adults trapping (CO2-baited traps, Mosquito Magnet Liberty Plus). Among 51,493 larvae and 319 adult mosquitoes collected, morphological identification showed the presence of 11 species: Anopheles claviger (Meigen), An. maculipennis s.l. (Meigen), An. plumbeus (Stephens), Culex hortensis (Ficalbi), Cx. territans (Walker), Cx. pipiens s.l. L., Cx. torrentium (Martini), Coquillettidia richiardii (Ficalbi), Culiseta annulata (Schrank), Aedes cantans (Meigen), Ae. geniculatus (Olivier). Molecular identification of Cx. pipiens species complex allowed the detection of three molecular forms, Pipiens (92.3%), Molestus (4.6%) and Hybrid (3.1%). Larvae of Cx. pipiens sl and Cx. torrentium were omnipresent and the most abundant species. Water troughs, ponds and slurry (liquid manure) were the most favorable breeding sites of mosquito larvae. Based upon behavior and ecology of the identified mosquito species, Studied Belgian equestrian farms seem to provide a suitable environment and breeding sites for the proliferation of potential vectors of arboviruses and those being a real nuisance problem for horses and neighboring inhabitants. [less ▲]Detailed reference viewed: 33 (7 ULg) The Inner Debris Structure in the Fomalhaut Planetary SystemSu, Kate Y. L.; Rieke, George H.; Defrere, Denis et alin Astrophysical Journal (2016), 818Fomalhaut plays an important role in the study of debris disks and small bodies in other planetary systems. The proximity and luminosity of the star make key features of its debris, like the water ice ... [more ▼]Fomalhaut plays an important role in the study of debris disks and small bodies in other planetary systems. The proximity and luminosity of the star make key features of its debris, like the water ice line, accessible. Here we present ALMA cycle 1, 870 μm (345 GHz) observations targeted at the inner part of the Fomalhaut system with a synthesized beam of 0.″45 × 0.″37 (˜3 AU linear resolution at the distance of Fomalhaut) and an rms of 26 μJy beam[SUP]-1[/SUP]. The high angular resolution and sensitivity of the ALMA data enable us to place strong constraints on the nature of the warm excess revealed by Spitzer and Herschel observations. We detect a point source at the star position with a total flux consistent with thermal emission from the stellar photosphere. No structures that are brighter than 3σ are detected in the central 15 AU × 15 AU region. Modeling the spectral energy distribution using parameters expected for a dust-producing planetesimal belt indicates a radial location in the range of ˜8-15 AU. This is consistent with the location where ice sublimates in Fomalhaut, i.e., an asteroid-belt analog. The 3σ upper limit for such a belt is <1.3 mJy at 870 μm. We also interpret the 2 and 8-13 μm interferometric measurements to reveal the structure in the inner 10 AU region as dust naturally connected to this proposed asteroid belt by Poynting-Robertson drag, dust sublimation, and magnetically trapped nanograins. Fomalhaut is a triple system; here we refer to the Fomalhaut planetary system as the one around the primary star Fomalhaut A. [less ▲]Detailed reference viewed: 20 (1 ULg) Decreased antibiotic consumption in the Belgian community: Is it credible?FRIPPIAT, Frédéric ; VERCHEVAL, Christelle ; LAYIOS, Nathalie in Clinical Infectious Diseases : An Official Publication of the Infectious Diseases Society of America (2016), 62(3), 403-404Detailed reference viewed: 29 (2 ULg) Volatile organic compounds discriminate between eosinophilic and neutrophilic inflammation in vitro.SCHLEICH, FLorence ; Dallinga, Jan W.; HENKET, Monique et alin Journal of breath research (2016), 10(1), 016006Inflammation associated oxidative stress leads to peroxidation of polyunsaturated fatty acids thereby generating volatile organic compounds (VOCs). The integrative analysis of the total amount of VOCs ... [more ▼]Inflammation associated oxidative stress leads to peroxidation of polyunsaturated fatty acids thereby generating volatile organic compounds (VOCs). The integrative analysis of the total amount of VOCs released by eosinophils and neutrophils in vitro enables the search for those compounds that discriminates between various inflammatory conditions. The approach comprises isolating eosinophils and neutrophils from 30 ml of blood of healthy non-smoking volunteers by gradient centrifugation, using lymphoprep. Eosinophils are separated from neutrophils by immunomagnetic cell separation using anti-CD16. Cells are activated with phorbol 12-myristate 13-acetate and VOCs from the headspace are collected at time 0', 30', 60' and 90' by introduction of ultra-pure nitrogen in the closed flasks at a flow rate of 200 ml min(-1) during 10 min. The gases are trapped onto a sorption tube and analyzed by gas chromatography-time-of-flight-mass spectometry (GC-TOF-MS) in order to identify VOCs released in the headspace by activated neutrophils and eosinophils. Eosinophils and neutrophils were isolated from 26 healthy non-smoking volunteers. The average absolute number of eosinophils and neutrophils upon isolation was 3.5 x 10(6) and 19.4 x 10(6), respectively. The volatome in headspace consisted of 2116 compounds and those compounds present in at least 8% of the samples (1123 compounds) were used for further discriminant analysis. Discriminant analysis showed that two VOCs were able to distinguish between eosinophilic and neutrophilic cultures in the unactivated state with 100% correct classification of the entire data set and upon cross validation while five VOCs were able to discriminate between activated eosinophils and neutrophils with 96% correct classification in the original set and upon cross-validation. Analysis of VOCs seems to be a very promising approach in identifying eosinophilic and neutrophilic inflammation but it needs further development and in vivo confirmation. [less ▲]Detailed reference viewed: 13 (1 ULg) Hot Jupiters with relatives: discovery of additional planets in orbit around WASP-41 and WASP-47Neveu-VanMalle, M.; Queloz, D.; Anderson, D. R. et alin Astronomy and Astrophysics (2016), 586We report the discovery of two additional planetary companions to WASP-41 and WASP-47. WASP-41 c is a planet of minimum mass 3.18 $\pm$ 0.20 M$_{\rm Jup}$ and eccentricity 0.29 $\pm$ 0.02, and it orbits ... [more ▼]We report the discovery of two additional planetary companions to WASP-41 and WASP-47. WASP-41 c is a planet of minimum mass 3.18 $\pm$ 0.20 M$_{\rm Jup}$ and eccentricity 0.29 $\pm$ 0.02, and it orbits in 421 $\pm$ 2 days. WASP-47 c is a planet of minimum mass 1.24 $\pm$ 0.22 M$_{\rm Jup}$ and eccentricity 0.13 $\pm$ 0.10, and it orbits in 572 $\pm$ 7 days. Unlike most of the planetary systems that include a hot Jupiter, these two systems with a hot Jupiter have a long-period planet located at only $\sim$1 au from their host star. WASP-41 is a rather young star known to be chromospherically active. To differentiate its magnetic cycle from the radial velocity effect induced by the second planet, we used the emission in the H$\alpha$ line and find this indicator well suited to detecting the stellar activity pattern and the magnetic cycle. The analysis of the Rossiter-McLaughlin effect induced by WASP-41 b suggests that the planet could be misaligned, though an aligned orbit cannot be excluded. WASP-47 has recently been found to host two additional transiting super Earths. With such an unprecedented architecture, the WASP-47 system will be very important for understanding planetary migration. [less ▲]Detailed reference viewed: 46 (4 ULg) The α CrB binary system: A new radial velocity curve, apsidal motion, and the alignment of rotation and orbit axesSchmitt, J. H. M. M.; Schröder, K.-P.; Rauw, Gregor et alin Astronomy and Astrophysics (2016), 586We present a new radial velocity curve for the two components of the eclipsing spectroscopic binary α CrB. This binary consists of two main-sequence stars of types A and G in a 17.3599-day orbit ... [more ▼]We present a new radial velocity curve for the two components of the eclipsing spectroscopic binary α CrB. This binary consists of two main-sequence stars of types A and G in a 17.3599-day orbit, according to the data from our robotic TIGRE facility that is located in Guanajuato, Mexico. We used a high-resolution solar spectrum to determine the radial velocities of the weak secondary component by cross-correlation and wavelength referencing with telluric lines for the strongly rotationally broadened primary lines (v sin(i) = 138 km s[SUP]-1[/SUP]) to obtain radial velocities with an accuracy of a few hundred m/s. We combined our new RV data with older measurements, dating back to 1908 in the case of the primary, to search for evidence of apsidal motion. We find an apsidal motion period between 6600 and 10 600 yr. This value is consistent with the available data for both the primary and secondary and is also consistent with the assumption that the system has aligned orbit and rotation axes. [less ▲]Detailed reference viewed: 23 (6 ULg) Lens galaxies in the Illustris simulation: power-law models and the bias of the Hubble constant from time delaysXu, Dandan; Sluse, Dominique ; Schneider, Peter et alin Monthly Notices of the Royal Astronomical Society (2016), 456A power-law density model, i.e. ρ (r) ∝ r^{-γ ^' }}, has been commonly employed in strong gravitational lensing studies, including the so-called time-delay technique used to infer the Hubble constant H ... [more ▼]A power-law density model, i.e. ρ (r) ∝ r^{-γ ^' }}, has been commonly employed in strong gravitational lensing studies, including the so-called time-delay technique used to infer the Hubble constant H[SUB]0[/SUB]. However, since the radial scale at which strong lensing features are formed corresponds to the transition from the dominance of baryonic matter to dark matter, there is no known reason why galaxies should follow a power law in density. The assumption of a power law artificially breaks the mass-sheet degeneracy, a well-known invariance transformation in gravitational lensing which affects the product of Hubble constant and time delay and can therefore cause a bias in the determination of H[SUB]0[/SUB] from the time-delay technique. In this paper, we use the Illustris hydrodynamical simulations to estimate the amplitude of this bias, and to understand how it is related to observational properties of galaxies. Investigating a large sample of Illustris galaxies that have velocity dispersion σ[SUB]SIE[/SUB] ≥ 160 km s[SUP]-1[/SUP] at redshifts below z = 1, we find that the bias on H[SUB]0[/SUB] introduced by the power-law assumption can reach 20-50 per cent, with a scatter of 10-30 per cent (rms). However, we find that by selecting galaxies with an inferred power-law model slope close to isothermal, it is possible to reduce the bias on H[SUB]0[/SUB] to ≲ 5 per cent and the scatter to ≲ 10 per cent. This could potentially be used to form less biased statistical samples for H[SUB]0[/SUB] measurements in the upcoming large survey era. [less ▲]Detailed reference viewed: 21 (2 ULg) Measuring rotation periods of solar-like stars using TIGRE. A study of periodic CaII H+K S-index variabilityHempelmann, A.; Mittag, M.; Gonzalez-Perez, J. N. et alin Astronomy and Astrophysics (2016), 586Context. The rotation period of a star is a key parameter both for the stellar dynamo that generates magnetic fields as well as for stellar differential rotation.