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See detailWolff’s Law and the Interplay between Bone Structure and External Loading
Ruffoni, Davide ULg; Christen, Patrik; Scherf, Heike et al

in IBMS BoneKEy (2015, April), 13

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See detailBiogenic Volatile Organic Compound (BVOC) emissions from agricultural crop species: is guttation a possible source for methanol emissions following light/dark transition?
Mozaffar, Ahsan ULg; Amelynck, Crist; Bachy, Aurélie ULg et al

in Geophysical Research Abstracts (2015, April), 17(EGU2015-2110-1),

In the framework of the CROSTVOC (CROp STress VOC) project, the exchange of biogenic volatile organic compounds (BVOCs) between two important agricultural crop species, maize and winter wheat, and the ... [more ▼]

In the framework of the CROSTVOC (CROp STress VOC) project, the exchange of biogenic volatile organic compounds (BVOCs) between two important agricultural crop species, maize and winter wheat, and the atmosphere has recently been measured during an entire growing season by using the eddy covariance technique. Because of the co-variation of BVOC emission drivers in field conditions, laboratory studies were initiated in an environmental chamber in order to disentangle the responses of the emissions to variations of the individual environmental parameters (such as PPFD and temperature) and to diverse abiotic stress factors. Young plants were enclosed in transparent all-Teflon dynamic enclosures (cuvettes) through which BVOC-free and RH-controlled air was sent. BVOC enriched air was subsequently sampled from the plant cuvettes and an empty cuvette (background) and analyzed for BVOCs in a high sensitivity Proton-Transfer Reaction Mass Spectrometer (hs-PTR-MS) and for CO2 in a LI-7000 non-dispersive IR gas analyzer. Emissions were monitored at constant temperature (25 °C) and at a stepwise varying PPFD pattern (0-650 µmol m-2 s-1). For maize plants, sudden light/dark transitions at the end of the photoperiod were accompanied by prompt and considerable increases in methanol (m/z 33) and water vapor (m/z 39) emissions. Moreover, guttation droplets appeared on the sides and the tips of the leaves within a few minutes after light/dark transition. Therefore the assumption has been raised that methanol is also coming out with guttation fluid from the leaves. Consequently, guttation fluid was collected from young maize and wheat plants, injected in an empty enclosure and sampled by PTR-MS. Methanol and a large number of other compounds were observed from guttation fluid. Recent studies have shown that guttation from agricultural crops frequently occurs in field conditions. Further research is required to find out the source strength of methanol emissions by this guttation phenomenon in real environmental conditions. [less ▲]

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See detailThe CROSTVOC project – an integrated approach to study the effect of stress on BVOC exchange between agricultural crops and grassland ecosystems and the atmosphere
Amelynck, Crist; Heinesch, Bernard ULg; Aubinet, Marc ULg et al

in Geophysical Research Abstracts (2015, April), 17

Global changes in atmospheric composition and climate are expected to affect BVOC exchange between terrestrial vegetation and the atmosphere through changes in the drivers of constitutive BVOC emissions ... [more ▼]

Global changes in atmospheric composition and climate are expected to affect BVOC exchange between terrestrial vegetation and the atmosphere through changes in the drivers of constitutive BVOC emissions and by increases in frequency and intensity of biotic or abiotic stress episodes. Indeed, several studies indicate changes in the emission patterns of constitutive BVOCs and emission of stress-induced BVOCs following heat, drought and oxidative stress, amongst others. Relating changes in BVOC emissions to the occurrence of one or multiple stressors in natural environmental conditions is not straightforward and only few field studies have dealt with it, especially for agricultural crop and grassland ecosystems. The CROSTVOC project aims to contribute in filling this knowledge gap in three ways. Firstly, it aims at performing long-term BVOC emission field measurements from maize (Zea mays L.) and wheat (Triticum aestivum L.), two important crop species on the global scale, and from grassland. This should lead to a better characterization of (mainly oxygenated) BVOC emissions from these understudied ecosystems, allowing a better representation of those emissions in air quality and atmospheric chemistry and transport models. BVOC fluxes are obtained by the Disjunct Eddy Covariance by mass scanning (DEC-MS) technique, using a hs-PTR-MS instrument for BVOC analysis. Secondly, the eddy covariance BVOC flux measurements (especially at the grassland site) will be accompanied by ozone flux, chlorophyll fluorescence, photosynthesis and soil moisture measurements, amongst others, to allow linking alterations in BVOC emissions to stress episodes. Simultaneously, automated dynamic enclosures will be deployed in order to detect specific abiotic and biotic stress markers by PTR-MS and identify them unambiguously by GC-MS. Thirdly, the field measurements will be accompanied by laboratory BVOC flux measurements in an environmental chamber in order to better disentangle the responses of the BVOC emissions to driving factors that co-occur in field conditions and to determine the influence of single abiotic stressors on BVOC emissions. Next to a general presentation, some preliminary results of the project will be shown. [less ▲]

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See detailConjonctivite néonatale à Neisseria Gonorrhoeae: pas seulement du passé
Tribolet, Sophie; Lefevre, Annabelle; Gillard, Perrine et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, March 13), 17(1), 113

L’ophtalmie néonatale n’appartient pas qu’au passé, l’incidence d’infections à Neisseria Gonorrhaea étant en augmentation en Belgique. Différentes prophylaxies sont proposées (nitrate d’argent, povidone ... [more ▼]

L’ophtalmie néonatale n’appartient pas qu’au passé, l’incidence d’infections à Neisseria Gonorrhaea étant en augmentation en Belgique. Différentes prophylaxies sont proposées (nitrate d’argent, povidone iodine, tétracycline, érythromycine, acide fusidique), avec leurs avantages et inconvénients respectifs. Aucun consensus clair n’est établi quant à la solution la plus efficace, certains remettant en doute leur utilisation dans les pays développés. [less ▲]

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See detailImplementation of placental transfusion protocol
Lefebvre, Caroline; MASSON, Véronique ULg; Kalenga, Masendu ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, March 12), 17(1), 72

A clear protocol for placental transfusion gives the opportunity to improve care of preterm infants. Initial information session and simulation practice for medical and midwifes staffs helps with its ... [more ▼]

A clear protocol for placental transfusion gives the opportunity to improve care of preterm infants. Initial information session and simulation practice for medical and midwifes staffs helps with its implementation. Delayed clamping and cord milking are not difficult after a learning phase like for most new procedures. [less ▲]

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See detailL'histiocytose de Langerhans, une cause rare de Blueberry Muffin Syndrome
Kreins, Nathalie; Kalenga, Masendu ULg; RIGO, Vincent ULg

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, March 12), 17(1), 72

La présentation du Blueberry Muffin Syndrome est typique, et permet de rapidement orienter le bilan étiologique. La biopsie cutanée est importante pour établir le diagnostic, qui lui-même conditionne le ... [more ▼]

La présentation du Blueberry Muffin Syndrome est typique, et permet de rapidement orienter le bilan étiologique. La biopsie cutanée est importante pour établir le diagnostic, qui lui-même conditionne le pronostic. [less ▲]

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See detailUltra-low power microsystems integrated
Laurent, Philippe ULg; Dupont, François ULg; Stoukatch, Serguei ULg et al

in Conference proceedings (2015, March 11)

Microsys has developed wireless microsystems using off-the-shelf components comprising ultra-low power sensors such as temperature, humidity and luminosity. We will show how to make the microsystem more ... [more ▼]

Microsys has developed wireless microsystems using off-the-shelf components comprising ultra-low power sensors such as temperature, humidity and luminosity. We will show how to make the microsystem more compact by decreasing the power consumption. So doing, no or little maintenance is required, leading to an efficient Wireless Sensor Network (WSN). [less ▲]

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See detailImpact of intensive enteral nutrition in association with corticosteroïds in the treatment of severe alcoholic hepatitis: a multicenter randomized controlled trial
Moreno, C; Trepo, E; Louvet, A et al

in Acta Gastro-Enterologica Belgica (2015, March), 78(1), 01

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See detailExpel: a novel non-destructive method for mining soluble tumor biomarkers
Costanza, B; Blomme, A; MUTIJIMA NZARAMBA, Eugène ULg et al

in Acta Gastro-Enterologica Belgica (2015, March), 78(1), 13

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See detailRole of adamalysin proteases in modulations of tumor microenvironment and premetastatic niches
Donati, Kim ULg; Bekaert, Sandrine; Sepult, Christelle ULg et al

in Revue des Maladies Respiratoires (2015, March), 32

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See detailDesign and implementation of a ‘physical activity day’ for overweight and obese youth
Cloes, Marc ULg; DEWANDRE, Anne-Cécile ULg; LEBRETHON, Marie-Christine ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, March), 17(1),

This study aimed to analyze the development and implementation of an adapted physical activity day expected to underline to overweight/obese youth the role of PA and hw they could be more active in their ... [more ▼]

This study aimed to analyze the development and implementation of an adapted physical activity day expected to underline to overweight/obese youth the role of PA and hw they could be more active in their daily life. [less ▲]

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See detailMultitasking abilities in persons diagnosed with schizophrenia: a new tool and cognitive model.
Laloyaux, Julien ULg; Van der Linden, Martial ULg; Laroi, Frank ULg

in Schizophrenia Bulletin (2015, March), 41(Supplement 1),

Difficulties in everyday life activities are core features of persons diagnosed with schizophrenia, and in particular during multitasking activities (Semkovska et al., 2010). Multitasking refers to ... [more ▼]

Difficulties in everyday life activities are core features of persons diagnosed with schizophrenia, and in particular during multitasking activities (Semkovska et al., 2010). Multitasking refers to activities (e.g. preparing a meal) where the person has to: (a) carry out and alternate between different tasks that vary in terms of priority, difficulty and duration; (b) define the tasks’ targets; (c) and where the person is faced with unexpected problems during the realization of these tasks (Burgess, 2000). However, the cognitive underpinnings of multitasking abilities have never been adequately explored in schizophrenia. Further, only two cognitive models exist in the literature, which are based on student (Logie et al., 2011) and neurological (Burgess et al., 2000) samples. Both of these models suggest three primary constructs: Memory, Planning and Intent. There are, however, several limitations related to the way multitasking abilities were evaluated in these studies. We thus developed a computerized real-life activity task - the Computerized Meeting Preparation Task (CPMT), which was specifically designed to take into account the multitasking nature of certain everyday life activities. Using this task, and based on previous studies (Burgess et al., 2000; Logie et al., 2011), the aim of the present study was to evaluate multitasking abilities in schizophrenia and to do so in a new cognitive model of multitasking that takes into account certain cognitive functions that are not integrated in existing models. Methods: Fifty-seven individuals with schizophrenia and 41 matched healthy controls completed the CMPT. Participants were also evaluated with a battery of cognitive tests. Results: The results suggest that the CMPT possesses good sensitivity and confirmed the three underlying constructs of multitasking (Memory, Planning and Intent), which were found to be underpinned by several cognitive functions and multitasking aspects. Conclusion: Taken together, this new cognitive model and the CMPT could be a good basis for cognitive interventions of multitasking abilities in schizophrenia. Burgess, P.W., 2000. Strategy application disorder: the role of the frontal lobes in human multitasking. Psychol Res 63, 279-288. Logie, R., et al., 2011. Multitasking: multiple, domain-specific cognitive functions in a virtual environment. Mem Cogn 39, 1561-1574. Semkovska, M. et al., 2004. Assessment of executive dysfunction during activities of daily living in schizophrenia. Schizophr Res 69, 289-300. [less ▲]

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See detailInfusion of third-party mesenchymal stream cells after liver transplantation: a phase-1, open-label, clinical study
DETRY, Olivier ULg; VANDERMEULEN, Morgan ULg; DELBOUILLE, Marie-Hélène ULg et al

in Acta Gastro-Enterologica Belgica (2015, March), 78(1), 29

Background: Mesenchymal stromal cells (MSC) are multipotent bone marrow progenitors that have demonstrated significant immunosuppressive effects in various in vivo and in vitro studies. This study aimed ... [more ▼]

Background: Mesenchymal stromal cells (MSC) are multipotent bone marrow progenitors that have demonstrated significant immunosuppressive effects in various in vivo and in vitro studies. This study aimed to be the first evaluation of the safety and tolerability of MSC infusion after liver transplantation in a prospective, controlled phase-1 study. This study aimed to be the first evaluation of the safety and tolerability of MSC infusion after liver transplantation in a prospective, controlled phase-1 study. Patients & Methods: Clinical grade MSCs were locally collected from the bone marrow of unrelated healthy donors. They were cultured in a GMP-compliant lab, underwent extensive quality controls and were frozen for storage in a MSC bank. When needed for patient treatment, MSC were thawed and intravenously injected into patients. 10 liver transplant recipients under standard immunosuppression (TAC-MMF-low dose steroids until day 30) received 1.5-3x106/kg MSC on post-operative day 3±2. These patients were prospectively compared to a group of 10 control (MSC-) liver recipients. Primary endpoints were MSC infusion toxicity, and incidence of cancer and opportunistic infections at month 6. Secondary endpoints were patient and graft survivals and rejection at month 6, as well as the effects of MSC on recipients’ immune function and on immunohistology of at month 6 graft biopsies. Results: No MSC infusional toxicity was observed. Both groups were comparable in terms of donor and recipient characteristics. There was no difference in primary end-points between control and MSC groups. No patient developed de novo cancer. There was no statistical difference in patient and graft survivals or in rejection rates. There was no graft rejection in the MSC group. Month-6 graft biopsies were not different according to Banff and fibrosis scores. Discussion: This phase 1 study showed excellent tolerability and safety of a single infusion of third-party MSC after liver transplantation. There were no graft safety issues and no excess of immunosuppression after MSC injection. Further analyses of consequences of MSC injection on the immune profile are needed. The possibility of avoiding calcineurin-inhibitors with repeated MSC injections as main immunosuppressive therapy and/of tolerance induction by MSC infusion should be investigated by further studies. [less ▲]

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See detailMetabolomic, proteomic and preclinical imaging of patient-derived tumor xenografts for improving treatment of liver metastases patients
Perez Palacios, A; Blomme, A; Boutry, S et al

in Acta Gastro-Enterologica Belgica (2015, March), 78(1), 134

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See detailMulticenter Belgian experience of sofosbuvir (medical need program) in very difficult-to-treat HCV patients: safety and efficacy results.
Degre, D; Laleman, W; Verhelst, X et al

in Acta Gastro-Enterologica Belgica (2015, March), 78(1), 03

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See detailAnalyse rétrospective des données concernant les patientes avec diabète gestationnel au CHU de Liège
RADERMECKER, Régis ULg; PHILIPS, Jean-Christophe ULg; Sepulchre, E

in Diabètes & Métabolism (2015, March), 41

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See detailBenefits of placental transfusion in very preterm infants
Lefebvre, Caroline; MASSON, Véronique ULg; Kalenga, Masendu ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, March), 17(1), 84

Introduction Cord clamping is not a trivial process. Its timing influences the significant physiological changes involved with this nearly universal practice. While the fetal and placental blood volumes ... [more ▼]

Introduction Cord clamping is not a trivial process. Its timing influences the significant physiological changes involved with this nearly universal practice. While the fetal and placental blood volumes add up to 100-120 ml/kg, their distributions differ between preterm and term neonates. The placenta accounts for 50% of the total blood volume in preterm infants and for only 33% in term neonates. Placental transfusion for 60 seconds increases neonatal blood volume by ± 16 ml/kg. In randomized trials, delayed cord clamping in preterm birth is associated with a more stable transitional circulation, a decrease need for inotropic support, and reduce blood transfusions, necrotizing enterocolitis, and intraventricular hemorrhages. Given those benefits, placental transfusion is integrated systematically in our management of preterm births since October 2013. This study aims to confirm expected benefits in a clinical setting. Patients and Methods We conducted a retro-prospective trial in a single tertiary care center. Very preterm infants (VPTi; <32 weeks GA) and VLBWi (BW<1500g) born between April 1st and September 30th 2013 were managed conventionally, with early cord clamping and constitute the control group. These data were collected retrospectively. October 2013 is the month for the new protocols implementation, and infants born this month are not included. Data from VPTi and VLBWi with delayed cord clamping or cord milking were collected prospectively from November 1st 2013 to April 30st 2014. Exclusion criteria were maternal and fetal vital emergencies, Rhesus sensitization, known major congenital abnormalities, tight nuchal cord, meconium teinted liquor, or mother infection by HIV or hepatitis. Results Fifty-two patients are included in the control group. In the second period, 26/XX preterm infants received a placental transfusion, including 6 with a 60 seconds delay in cord clamping and 20 with cord milking. Maternal and neonates’ characteristics were not significantly different. Mean birth weights (BW) were 1208g in the control and 1157g in the placental transfusion groups, with mean gestational age of 28 weeks 4/7 and 28 weeks 6/7, respectively. Mean arterial pressure is significantly increased with placental transfusion (H0 p=0.0006), (H12 p=0.032), (H24 p=0.01). Hemoglobin (H24 p=0,01) and hematocrit (H0 p=0,03), (H12 p=0,05), (H24 p=0,007) are also significantly higher. The number of transfusions per patient transfused (early group 3±2.5 vs. placental transfusion 1±0.4) is significantly lower (p=0.038). No infant with a BW>950g managed with delayed clamping or cord milking did required a transfusion. Conclusion Placental transfusion is associated with a higher blood pressure during the first 24 hours. Placental transfusion also reduces transfusion requirements, with reduction in the number of multi-transfused patients. We found this procedure safe and did not identify short or medium term adverse effects. For preterm infants, the third stage of labor management should evolve toward a more physiological practice, with systematic placental transfusion. [less ▲]

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See detailAvancement du projet de l'inventaire typologique et dendrochronologique des charpentes anciennes en région Bruxelles-Capitale
Weitz, Armelle ULg; Charruadas, Paulo ULg; Crémer, Sarah et al

in Archaeologia Mediaevalis (2015, March), 38

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See detailDairy products & Bone Health: Turning facts and beliefs into clinical practice
Bruyère, Olivier ULg

in Osteoporosis International (2015, March), 26(S1), 383

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See detailRemboursement de la mesure continue du glucose en Belgique: un exemple de multidisciplinarité
RADERMECKER, Régis ULg; Contessi, El

in Diabètes & Métabolism (2015, March), 41

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See detailExploring limiting factors in the prediction of allogeneic HSCT related mortality: an in-silico machine learning analysis of the acute leukemia working party (ALWP) registry of the EBMT
SHOUVAL, R.; LABOPIN, M.; UNGER, R. et al

in Bone Marrow Transplantation (2015, March), 50

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See detailPhysical rehabilitation in musculoskeletal conditions: which method?
Bruyère, Olivier ULg

in Osteoporosis International (2015, March), 26(S1), 68

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See detailEvaluation de l’efficacité de la simulation haute fidélité dans la prise en charge des troubles du rythme cardiaque chez l’enfant: étude pilote
SCHUMACHER, Katharina ULg; Seghaye, Marie-Christine ULg; Baugnon, Thomas et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, March), 17(1),

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See detailMilan Kundera et "La fête de l'insignifiance".
Mus, Francis ULg

in L'art du roman (2015, February 20)

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See detailAzione, testualizzazione, notazione
Dondero, Maria Giulia ULg

in Espressione e contenuto. Rivista on-line dell'AISS Associazione Italiana di Studi Semiotici (2015, February), 18/19

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See detailLes PPP comme nouveau mode de régulation du marché de l'accompagnement des demandeurs d'emploi. A chaque modèle de partenariat son type de stratégie
Remy, Céline ULg

in Cahiers Loyola (2015, February), 1

Cette communication vise à montrer en quoi les partenariats publics-privés (PPP) constituent désormais un nouveau mode de régulation du marché de l’accompagnement des demandeurs d’emploi. Les services ... [more ▼]

Cette communication vise à montrer en quoi les partenariats publics-privés (PPP) constituent désormais un nouveau mode de régulation du marché de l’accompagnement des demandeurs d’emploi. Les services publics de l’emploi (SPE) doivent établir des PPP avec des prestataires de service pour la mise en place de formation à destination des demandeurs d’emploi. La réalisation de trois études de cas au sein des SPE, dont deux en Belgique et une en Suisse, nous permet de mettre en évidence une forte influence du modèle de gestion du PPP sur la collaboration entre les parties-prenantes mais aussi sur les stratégies développées par les prestataires pour surmonter les problèmes liés à la collaboration avec l’Office de l’Emploi et à la mise en place de la prestation de service. [less ▲]

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See detailCastalia — A Mission to a Main Belt Comet
Jones, G. H.; Altwegg, K.; Bertini, I. et al

in LPI (2015, January 01), 1829

Main Belt Comets (MBCs) are a newly identified class of solar system object, having asteroid-like orbits but sometimes exhibiting comet-like behavior. We present the case for a mission to an MBC, to be ... [more ▼]

Main Belt Comets (MBCs) are a newly identified class of solar system object, having asteroid-like orbits but sometimes exhibiting comet-like behavior. We present the case for a mission to an MBC, to be submitted to the European Space Agency. [less ▲]

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See detailMassive stars: privileged sources of cosmic-rays for interstellar astrochemistry
De Becker, Michaël ULg

in Bulletin de la Société Royale des Sciences de Liège (2015, January), 84

Massive stars can be considered as crucial engines for interstellar physics. They are indeed the main providers of UV radiation field, and constitute a substantial source of chemical enrichment. On their ... [more ▼]

Massive stars can be considered as crucial engines for interstellar physics. They are indeed the main providers of UV radiation field, and constitute a substantial source of chemical enrichment. On their evolution time-scale (at most about 10 Myr), they typically stay close to their formation site, i.e. close to molecular clouds very rich in interstellar molecules. These stellar objects have also the property to be involved in particle acceleration processes leading to the production of high energy charged particles (cosmic-rays). After rejection in the interstellar medium, these particles will play a substantial role in processes such as those simulated in various facilities dedicated to experimental astrochemistry. This short contribution intends to put these particles, crucial for astrochemistry, in their adequate astrophysical context. [less ▲]

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See detailAutoimmune thyroid diseases in early childhood three case reports
Guffins, Amandine ULg; HARVENGT, Julie ULg; LUYCKX, F. et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 41

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See detailMono- and Biallelic deletion of neurexin - à propos of 3 cases
Barrea, Christophe ULg; RAMAEKERS, Vincent ULg; Seghaye, Marie-Christine ULg

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 107

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See detailFood provioning influences ranging patterns in northern pigtailed macaques (Macaca leonina)
Huynen, Marie-Claude ULg; Savini, Tommaso ULg; Asensio, Norberto et al

in International Journal of Primatology (2015, January)

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See detailUne gangrène digitale humide traitée de façon conservatrice
Janssen, Aurélie; STERGIOPOULOU, Theodouli ULg; NYAMUGABO MUNYERE NKANA, Kindja ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 64

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See detailComplications de l'appendicite aiguë chez l'enfant : à propos d'un cas
Janssen, Aurélie; NYAMUGABO MUNYERE NKANA, Kindja ULg; STERGIOPOULOU, Theodouli ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 66

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See detailRespiratory distress or eating disorder could: it be a vascular ring ?
Solowianiuk, Marie ULg; FARHAT, Nesrine ULg; HOLZKI, Josef ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 98

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See detailPromotion of physical activity among children and adolescents followed for overweight or obesity in
DEWANDRE, Anne-Cécile ULg; HARVENGT, Julie ULg; LAGASSE, Celine ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 40

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See detailGene expression of growth factors and apoptosis regulating proteins in rat myocardium after exposure to endocrine disrupting chemicals : a preliminary study
ROUATBI, Hatem ULg; GERARD, Arlette ULg; Seghaye, Marie-Christine ULg

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 99

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See detailExercice stress echocardiography in secondary mitral regurgitation : impact of pulmonary hypertension
MAGNE, Julien; PIERARD, Luc ULg; LANCELLOTTI, Patrizio ULg

in Archives of Cardiovascular Diseases (2015, January), 7

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See detailCellulite faciale sévère au départ d'une lésion de varicelle - à propos d'un cas
Bourcy, Emilie ULg; Saliba, Mariane ULg; NYAMUGABO MUNYERE NKANA, Kindja ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 113

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See detailExperimental astrochemistry: from ground-based to space-borne laboratories (Foreword)
De Becker, Michaël ULg; Cottin, Hervé; Fleury-Frenette, Karl ULg et al

in Bulletin de la Société Royale des Sciences de Liège (2015, January), 84(4-6),

The investigation of the origin and evolution of molecules in space environments, either in interstellar or interplanetary conditions, constitutes a topic of high importance in modern space sciences. The ... [more ▼]

The investigation of the origin and evolution of molecules in space environments, either in interstellar or interplanetary conditions, constitutes a topic of high importance in modern space sciences. The presence of diversified and complex molecules motivates astrochemists to explore their formation mechanisms along with the physical conditions ruling these physico-chemical processes. Beside theoretical approaches aiming at simulating these processes, experimental techniques are nowadays frequently applied. Both laboratory and space experiment projects allow to reproduce to some extent the adequate conditions to understand some of these processes. The most recent results based on these techniques, and the prospects for future investigations, including the use of space platforms, were the scientific motivation of this workshop. These proceedings summarize a part of the content of this workshop, including abundant references to the relevant bibliography. [less ▲]

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See detailDoes gestational diabetes influence foetal organ function ?
Guffins, Amandine ULg; FARHAT, Nesrine ULg; GKIOUGKI, Evangelia ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 99

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See detailSexually dimorphic effect of gestational exposure to BPA on DNA methylation in the rat placenta
Fudvoye, Julie ULg; Dehan, Pierre ULg; Trooskens, G. et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 37

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See detailJAWAC evolving technologies to study sleep disturbance in obese adolescents - a preliminary study
Barrea, Christophe ULg; HARVENGT, Julie ULg; LEBRETHON, Marie-Christine ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 107

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See detailPaucisymptomatic presentation of viral myocarditis in children
TSHIMANGA, Prisca ULg; DARON, B.; FARHAT, Nesrine ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015, January), 17(1), 98

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See detailComparison of soil water potential sensors
Degré, Aurore ULg; Cadwell, Todd; van der Ploeg, Martine

in Geophysical Research Abstracts (2015)

Temporal and spatial monitoring of soil water potential and soil water content are necessary for quantifying water flow in the domains of hydrology, soil science and crop production as knowledge of the ... [more ▼]

Temporal and spatial monitoring of soil water potential and soil water content are necessary for quantifying water flow in the domains of hydrology, soil science and crop production as knowledge of the soil water retention curve is important for solving Richards’ equation. Numerous measurement techniques exist nowadays that use various physical properties of the soil-water complex to record changes in soil water content or soil water potential. Laboratory techniques are very useful to determine static properties of the soil water retention curve, and have been used to show the impacts of hysteresis. Yet, other spatiotemporal dynamics resulting from for example growing root systems, biological activity, periodic tillage and their impact on the soil structure cannot satisfactory be quantified in static setups in the laboratory. ). To be able to quantify the influence of soil heterogeneity, and spatiotemporal dynamics on the soil water retention curve, an in situ approach combining soil moisture and soil water potential measurements could provide useful data. Such an in situ approach would require sensors that can measure a representative part of the soil water retention curve. The volumetric soil water content is often measured using time domain reflectometry, and has gained widespread acceptance as a standard electronic means of volumetric water content measurement. To measure the soil water potential, water filled tensiometers are used in most studies. Unfortunately, their range remains limited due to cavitation. Recently, several new sensors for use under in situ conditions have been proposed to cover a wider range of pressure head: Polymer tensiometers, MPS (Decagon) and pF-meter (ecoTech). In this study, we present the principles behind each measurement technique. Then we present the results of a fully controlled experiment where we compared two MPS sensors, two pF-meter sensors and two POT sensors in the same repacked soil. It allows us to discuss advantages and disadvantages of each method. A CS616 volumetric water content probe was installed to compare in situ measured retention curves with laboratory measured retention curves for each method. [less ▲]

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See detail¿Podemos hablar de una postura de traductor?
Mogollon Zapata, Juan Manuel ULg

in Tropelías: Revista de Teoría de la Literatura y Literatura Comparada (2015), 24

Para acceder a una visibilidad mediática, a una postura reconocible por el público y por sus pares, el traductor se ve obligado a capitalizar espacios de enunciación como los que conceden los prefacios ... [more ▼]

Para acceder a una visibilidad mediática, a una postura reconocible por el público y por sus pares, el traductor se ve obligado a capitalizar espacios de enunciación como los que conceden los prefacios, la crítica o los retratos biográficos. Dicho espacio, en donde el traductor pone en marcha unas estrategias discursivas e institucionales que le permiten posicionar su figura y su proyecto de traducción, es el que le permite acceder al estatuto de mediador. Tomando prestadas unas herramientas teóricas de la sociología de los campos (Jérôme Meizoz) y del análisis del discurso (Dominique Maingueneau), el siguiente artículo busca sentar unas bases metodologías para el análisis de la figura del traductor-mediador. [less ▲]

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See detailTracheal diameter in puppies
Rizza, Maïlis ULg; Liotta, Annalisa Pia ULg; Billen, Frédéric ULg et al

in Veterinary Radiology & Ultrasound (2015)

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See detailDihadron fragmentation functions and transversity
Radici, M.; Courtoy, Aurore ULg; Bacchetta, A.

in EPJ Web of Conferences (2015), 85

We present preliminary results for an updated extraction of the transversity parton distribution based on the analysis of pion-pair production in deep-inelastic scattering off transversely polarized ... [more ▼]

We present preliminary results for an updated extraction of the transversity parton distribution based on the analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets in collinear factorization. Data for proton and deuteron targets by HERMES and COMPASS allow for a flavor separation of the valence components of transversity, while di-hadron fragmentation functions are taken from the semi-inclusive production of two pion pairs in back-to-back jets in e+e- annihilation. The latter data from Belle have been reanalyzed using the replica method and a more realistic estimate of the uncertainties on the chiral-odd interference fragmentation function has been obtained. After encoding this piece of information into the deep-inelastic scattering cross section, the transversity has been re-extracted by using the most recent and more precise COMPASS data for proton target. This picture represents the current most realistic estimate of the uncertainties on our knowledge of transversity. The preliminary results indicate that the valence up component seems smaller and with a narrower error band than in previous extraction. © 2015 Owned by the authors, published by EDP Sciences. [less ▲]

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See detailBaseline characteristics of the Liège Hand Osteoarthritis Cohort (LIHOC)
NEUPREZ, Audrey ULg; Bruyère, Olivier ULg; Dardenne, Nadia ULg et al

in Annals of the Rheumatic Diseases (2015), 74(Supp2), 1346

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See detailPredictive biomarkers of everolimus efficacy in HER2+ advanced breast cancer : combined exploratory analysis from BOLERO-1 and BOLERO-3
Slamon, Dennis; Hurvitz, Sara; Chen, David et al

in Journal of Clinical Oncology (2015), 33(suppl ; abstr 512),

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See detailMonkey business: Inter-group differences in the object/food bartering practice in Balinese macaques (Macaca fascicularis) at the Uluwatu Temple, Indonesia
Brotcorne, Fany ULg; Leca, Jean-Baptiste; Gunst, Noelle et al

in Folia Primatologica : International Journal of Primatology = Internationale Zeitschrift für Primatologie = Journal international de Primatologie (2015), 86

While there is increasing evidence for the social transmission of behavioural innovations and intergroup behavioural variation in a wide range of nonhuman primate taxa, some behavioural domains (e.g ... [more ▼]

While there is increasing evidence for the social transmission of behavioural innovations and intergroup behavioural variation in a wide range of nonhuman primate taxa, some behavioural domains (e.g., tool use) are far more represented than others (e.g., arbitrary social conventions) in the literature. Our study explores the ‘object/food bartering’ activity in the free-ranging long-tailed macaques, Macaca fascicularis, living around the Uluwatu temple, southern Bali (Indonesia). This practice occurs in two steps: after robbing temple visitors of non-edible objects, the monkeys use these objects as tokens, by returning them in exchange for specific food rewards. This spontaneous population-level activity is customary and enduring at Uluwatu, whereas it is very rare or absent at other macaque-tourism sites across the island. During a fourmonth study in 2010 at Uluwatu, we used the all-occurrence sampling technique to record 186 successful events of object-robbing, where 95 (51%) were followed by object/food bartering attempts. In line with the ‘needing-to-learn’ hypothesis, we found that older individuals were significantly more efficient at robbing valuable objects and more successful at exchanging them for food than younger individuals. We also found substantial differences in the frequency and form of the bartering practice (n = 95 events) among the four social groups constituting the Uluwatu population, with two groups (‘Temple’: 60% of the bartering events, ‘Tear’: 34%) being responsible for more frequent bartering events than the two other groups (‘Scarface’: 4%, ‘Nez’: 2%). We investigated the role of group-specific environmental and anthropic influences (food provisioning and degree of human presence) in such intergroup differences. Taken together, these preliminary results suggest that the bartering practice could be a local behavioural tradition in Balinese macaques. [less ▲]

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See detailContinuous glucose monitoring: Using cgm to guide insulin therapy virtual trials results
Mombaerts, L.; Thomas, Felicity Louise ULg; Signal, M. et al

in IFAC-PapersOnLine (2015), 48(20), 112-117

Continuous glucose monitoring (CGM) devices can measure blood glucose levels through interstitial measurements almost continuously (1-5min sampling period). However, they are not as accurate as glucose ... [more ▼]

Continuous glucose monitoring (CGM) devices can measure blood glucose levels through interstitial measurements almost continuously (1-5min sampling period). However, they are not as accurate as glucose readings from blood measurements. The relation between tissue and blood glucose is dynamic and the sensor signal can degrade over time. In addition, CGM readings contains high frequency noise and can drift between measurements. However, maintaining continuous glucose monitoring has the potential to improve the level of glycemic control achieved and reduce nurse workload. For this purpose, a simple model was designed and tested to see the effect of inherent CGM error on the insulin therapy protocol, STAR (Stochastic TARgeted). An error model was generated from 9 patients that had one Guardian Real-Time CGM device (Medtronic Minimed, Northridge, CA, USA) inserted into their abdomen as part of an observation trial assesing the accuracy of CGM measurements compared to a blood gas analyser and glucometer readings. A resulting error model was then used to simulate the outcomes if the STAR protocol was guided by CGM values on 183 virtual patients. CGM alarms for hyper- and hypo-glycaemic region were included to improve patient safety acting as 'guardrails'. The STAR CGM protocol gave good performance and reduced workload by ∼50%, reducing the number of measurements per day per patient from 13 to 7. The number of hypoglycaemic events increased compared to the current STAR from 0.03% <2.2mmol/L to 0.32%. However, in comparison to other published protocols it is still a very low level of hypoglycaemia and less than clinically acceptable value of 5% <4.0mmol/L. More importantly this study shows great promise for the future of CGM and their use in clinic. With the a newer generation of sensors, specifically designed for the ICU, promising less noise and drift suggesting that a reduced nurse workload without compromising safety or performance is with in reach.? © 2015, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved. [less ▲]

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See detailMonitoring the pregnancy status of dairy cows using mid-infrared spectra of milk collected from milk recording
Laine, Aurélie ULg; Dale, Laura-Monica ULg; Bel Mabrouk, Hana ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2015), 19(2), 97-124

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See detailLes actes notariés : des sources non négligeables dans l'étude des conflits quotidiens des populations du XVIIIe siècle à Liège
Drécourt, Aurore ULg

in Annales de l'Est (2015), spécial

Insults, gossip, and slander are the origin of many conflicts during the Ancien Régime. They are used to hurt someone’s honour or reputation, which are essential values to keeping good relationships in ... [more ▼]

Insults, gossip, and slander are the origin of many conflicts during the Ancien Régime. They are used to hurt someone’s honour or reputation, which are essential values to keeping good relationships in society. People need to defend their honour when they are injured. They can seek reparations by taking legal action or opting for infrajudicial practices, such as contacting a notary. This possibility has attracted too little attention from historians whereas notarial records are a massive source of information related to conflicts affecting people's daily lives. Indeed, during the eighteenth century, inhabitants of Liège contacted a notary in order to find an agreement, clear their name of an insult, or to write their version of an aggression. [less ▲]

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See detailBiomarkers of prognosis and efficacy of treatment in OA
Henrotin, Yves ULg

in BMC Musculoskeletal Disorders (2015), 16(suppl 1),

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See detailLE CANCER DU TRES JEUNE ENFANT : EPIDEMIOLOGIE LIEGEOISE
Fontaine, C; RIGO, Vincent ULg; FORGET, Patricia ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015), 17(1), 47

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See detailBaseline Fibulin3 Concentrations Are Associated with Incidence of Clinical Knee OA after 30 Months in Overweight and Obese Women
Runhaar; Sanchez, Christelle ULg; Taralla, Sébastien et al

in Arthritis and Rheumatism (2015), 67(Suppl10),

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See detailOn the relationship between gray matter and behavioral data: lessons learned
Genon, Sarah ULg; Wensing, Tobias; Hoffstaedter, Felix et al

in Proceedings of the Annual Meeting of the Organization of Human Brain Mapping (2015)

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See detailHealth related quality of life in sarcopenia
Beaudart, Charlotte ULg; Reginster, Jean-Yves ULg; Slomian, Justine ULg et al

in Osteoporosis International (2015), 26(S1), 148-149

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See detailHow can we help implementing ESCEO algorithm in real life?
Reginster, Jean-Yves ULg

in Osteoporosis International (2015), 26(S1), 382

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See detailPrevalence of frailty in nursing home residents according to various diagnostic tools
Buckinx, Fanny ULg; Reginster, Jean-Yves ULg; Dardenne, Nadia ULg et al

in Journal of Frailty & Aging (2015), 4(S1), 61

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See detailCirculating miRNA signature of PET-positive abdominal aortic aneurysms: new potential predictors of rupture
Courtois, Audrey ULg; Nusgens, Betty ULg; HUSTINX, Roland ULg et al

in Atherosclerosis, Thrombosis and Vascular Biology (2015)

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See detailStifle intra-articular lipomatous lesion in a dog
Bergamino, Chiara; Liotta, Annalisa Pia ULg; Barthelemy, Nicolas ULg et al

in Veterinary Radiology & Ultrasound (2015)

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See detailIs early aggressive feeding dangerous for extremely low birth weight infants?
Blecic, Anne-Sophie; Delbos, Marion; RIGO, Vincent ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015), 17(1), 83

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See detailEnergy and nutrient contents of food served and consumed by nursing home residents
Buckinx, Fanny ULg; PAQUOT, Nicolas ULg; ALLEPAERTS, Sophie ULg et al

in The Journal of Nursing Home Research Sciences (2015), 1

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See detailComparaison de deux programmes d'étirements des ischio-jambiers en terme de maintien des gains en mobilité au suivi à deux mois
Demoulin, Christophe ULg; Wolfs, Sébastien ULg; Chevalier, Madeline et al

in Kinesitherapie Revue (2015), 15(158), 57-58

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See detailFonctionnement exécutif: Neuro-imagerie et neuropsychologie
Collette, Fabienne ULg

in Revue Neurologique (2015), 1715

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See detailRadiative Origin of Majorana Neutrino Masses
Aristizabal Sierra, Diego ULg

in PoS - Proceedings of Science (2015)

We discuss raditiative-induced neutrino mass mechanisms. We first briefly discuss systematic one-loop level classifications, and then discuss two-loop classification schemes based on a diagrammatic ... [more ▼]

We discuss raditiative-induced neutrino mass mechanisms. We first briefly discuss systematic one-loop level classifications, and then discuss two-loop classification schemes based on a diagrammatic decomposition of the Weinberg operator. We point out that both, the one and two-loop order systematic sorting provides an exhaustive guide for radiative neutrino mass models. [less ▲]

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See detailRecommendation for the management of knee osteoarthritis
Reginster, Jean-Yves ULg; Bruyère, Olivier ULg

in Bone, Muscle and Joint Diseases (2015), (S35), 40

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See detailDécrochage de la courbe de périmètre crânien et si l’origine n'était pas neurologique
LONGTON, Julie ULg; DRESSE, Marie-Françoise ULg; Hoyoux, Marie et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015), 17(1), 46

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See detailTrabecular bone score (TBS) as a new complementary appproach for osteoporosis evaluation in clinical practice
Harvey, NC; Binkley, N; Brandi, ML et al

in Osteoporosis International (2015), 26(S1), 60

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See detailOcanacatib antifracture efficacy and saftey in postmenopausal women with osteoporosis: results from the phase III long-term adonacatib fracture trial (LOFT)
McClung, MR; Langdahl, B; Papapoulos, S et al

in Osteoporosis International (2015), 26(S1), 35-36

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See detailPhysical abilities of elderly nursing home residents: The SENIOR cohort
Buckinx, Fanny ULg; Reginster, Jean-Yves ULg; CROISIER, Jean-Louis ULg et al

in The Journal of Nursing Home Research Sciences (2015), 1

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See detailIs there a specific pattern of lean/fat mass ratio in sarcopenic subjects?
Beaudart, Charlotte ULg; Reginster, Jean-Yves ULg; Croisier, Jean-Louis ULg et al

in Osteoporosis International (2015), 26(S1), 145-146

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See detailAnomaly-free chiral fermion sets and gauge coupling unification
Da Silva Simoes, Catarina ULg

in Journal of Physics: Conference Series (2015)

In this work we search for minimal sets of chiral fermions, with arbitrary quantum numbers, beyond the Standard Model that are anomaly-free and lead to vector-like particles under SU(3) and U(1)_em after ... [more ▼]

In this work we search for minimal sets of chiral fermions, with arbitrary quantum numbers, beyond the Standard Model that are anomaly-free and lead to vector-like particles under SU(3) and U(1)_em after symmetry breaking. We further study which of these anomaly free sets lead to unification of the gauge couplings at energy scales higher that 5.0×10^15 GeV in order to be consistent with proton decay bounds. A similar study is performed in the context of the SU(5) gauge group; for some of the anomaly-free sets found it is possible to obtain unification of the gauge couplings with the extra fermions decoupling at high intermediate scales. [less ▲]

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See detailEVALUATION OF THE CARDIOMYOTOXIC EFFECTS OF DOXYCYCLINE OVERDOSE IN CALVES USING 2-DIMENSIONAL SPECKLE TRACKING.
Lecoq, Laureline ULg; Leroux, Aurélia ULg; Brihoum, Mounir et al

in Journal of Veterinary Internal Medicine (2015), 29(4), 1254

Doxycycline (DOXY) is associated with left ventricular (LV) dysfunction in calves in accidental overdose but not in experimental models when evaluated with classical and Doppler echocardiography. Two ... [more ▼]

Doxycycline (DOXY) is associated with left ventricular (LV) dysfunction in calves in accidental overdose but not in experimental models when evaluated with classical and Doppler echocardiography. Two-dimensional-speckle tracking (2DST) is used to evaluate LV dysfunction in numerous species but not in cattle. The aim of this study was to evaluate the cardiotoxic effects of an experimental overdose of DOXY using 2DST in calves. Ten healthy male Holstein calves. Group 1: 5 calves (mean age 58.0 +/- 16.3 days; mean body weight 72.2 +/- 13.0 kg) received 25 mg/kg of DOXY orally for 5 days. Group 2: 5 calves (mean age 56.4 +/- 15.7 days; mean body weight 73.4 +/- 7.0 kg) received a placebo. Electrocardiography (ECG) and 2DST echocardiography were performed at day 0 and day 8. ECG tracings were analysed for occurrence of arrhythmias. 2DST measurements included global and segmental, peak values for radial and circumferential strains (SR, SC), strain rates (SrR, SrC), rotation (Rot), rotation rates (RotR) and radial displacement (DR). All calves completed the study. ECG recordings were unremarkable in both groups. Heart rate was neither significantly different between groups nor before and after treatment. LV systolic function was affected in calves receiving an overdose of DOXY as shown by a significant decrease of segmental SR (P < 0.05), SC (P < 0.05) and DR (P < 0.05) in treated calves compared to the placebo group in several segments. The SrC in early diastole was also significantly decreased in 1 segment (<0.05). In calves, DOXY overdose induces a LV dysfunction in systole, and to a lesser extent, in diastole. A better comprehension of the pathophysiology involved in the DOXY overdose will help in the treatment of accidental cases. [less ▲]

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See detailCritical evaluation of promising markers for sarcopenia
CAVALIER, Etienne ULg; GADISSEUR, Romy ULg; GEBOES, Séverine ULg et al

in Osteoporosis International (2015), 26(S1), 49-50

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See detailEUROPEANELITA ELTRE MULTICENTER SURVEY ON THE MANAGEMENT OF BILE DUCT DURING LIVER PROCUREMENT,PRESERVATION AND TRANSPLANTATION
MEURISSE, Nicolas ULg; Monbaliu, Diethard; Muiesan, Paolo et al

in Transplant International (2015)

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See detailUNE TUMEUR RARE DE LA FACE CHEZ UN NOURRISSON DE 6 MOIS
Fontaine, C; DEMEZ, Pierre ULg; FORGET, Patricia ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2015), 17(1), 46

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See detailGlucosamine and chondroitin salts in the management of osteoarthritis in Europe
Reginster, Jean-Yves ULg

in Osteoporosis International (2015), 26(S1), 60-61

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See detailL'aménagement transsexuel comme solution à l'adolescence
BURDOT, Frédéric ULg; Malchair, Alain ULg

in Revue Enfances Adolescences (2015), 28(2), 95-102

L’aménagement transsexuel comme solution à l’adolescence La transsexualité est souvent banalisée par les médias, séduits par l’idée facile à vendre d’une âme sexuée, donc du drame de la possible ... [more ▼]

L’aménagement transsexuel comme solution à l’adolescence La transsexualité est souvent banalisée par les médias, séduits par l’idée facile à vendre d’une âme sexuée, donc du drame de la possible inadéquation entre le sexe psychique et le sexe corporel. L’observation clinique rigoureuse de son élaboration plaide cependant pour une architecture complexe, résultant d’une dynamique subtile entre le psychisme, l’histoire et l’environnement. En effet, dans l’analyse d’un cas clinique, nous constatons que, face au risque de l’effondrement identitaire d’une structure fragile le Moi tente de se renforcer par l’organisation de mécanismes de défense qui élabore une nouvelle identité étayée sur un physique transité vers l’autre sexe. Si l’on analyse les interactions précoces sous l’angle de la formation de l’identité sexuelle, le noyau « genré » du Moi peut subir une double attaque, par manque d’identification au même et par attaque mortifère du différent. Le Moi se trouve ainsi délié et persécuté par des objets partiels ou peu introjectés. A l’adolescence, moment potentiellement traumatique de la sexuation, le jeune se trouve confronté à l’interrogation sur son identité sexuelle, et lorsque le noyau « genré » s’est précisément trouvé fragilisé, l’angoisse surgit, avec le risque d’une bascule psychotique. Dans ces cas extrêmes, la recherche d’une nouvelle enveloppe, remodelage de la peau, permet de contenir l’éclosion du courant psychotique grâce à la disponibilité permanente de l’incorporation du différent, identification certes coûteuse en ressources mais peut-être, à même d’éviter l’effondrement narcissique complet. [less ▲]

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See detailAn Approach to the Dynamics and Control of Uncertain Multi-body Systems
Wanichanon, Thanapat; Cho, Hancheol ULg; Udwadia, Firdaus

in IUTAM Symposium on Dynamical Analysis of Multibody Systems with Design Uncertainties (2015), 13

This paper deals with the initial development of a methodology for controlling real-life, multi-body dynamical systems in the presence of uncertainties in our knowledge of their exact physical nature as ... [more ▼]

This paper deals with the initial development of a methodology for controlling real-life, multi-body dynamical systems in the presence of uncertainties in our knowledge of their exact physical nature as well as uncertainties in the ‘given’ forces acting on them. We assume that both these uncertainties can be time-varying, yet bounded. The methodology is developed in two steps. In the first step an exact control of the so-called nominal system—our best assessment of the real-life physical system and the forces acting on it—is developed. This control is inspired by results from analytical dynamics and involves no linearizations and/or approximations of the nonlinear, nonautonomous system. It also minimizes a suitable norm of the trajectory errors at each instant of time. In the second step, a continuous controller using a generalized sliding mode approach is developed that guarantees that the real-life system tracks, without any chatter and to within pre-specified error bounds, the control requirements that are imposed on the nominal system. Thus an explicit closed-form control for an uncertain, nonlinear, nonautonomous multi-body system that satisfies trajectory control requirements placed on the nominal system (to within pre-specified error bounds), is obtained. An example of a triple pendulum in which there are uncertainties both in the description of its physical parameters and in the description of the gravity field in which it moves is considered. The example demonstrates the simplicity and efficacy of the approach when there are uncertainties both in the description of a dynamical system and in the given forces to which it is subjected. [less ▲]

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See detailGrip fatigue resistance and self-perceived fatigue in relation with sarcopenia and quality of life
Beaudart, Charlotte ULg; Reginster, Jean-Yves ULg; Bautmans, I et al

in Osteoporosis International (2015), 26(S1), 147-148

Detailed reference viewed: 38 (8 ULg)