References of "2010"
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See detailInfluence on fertility of Lianol Solapro incorporation in lactation diet
Wavreille, José; Planchon, Viviane; Renaville, Robert ULg et al

in 21 Inter. Pig Vet Society Congress (2010)

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See detailPréface
Pichault, François ULg

in Ulrich, Dave; Brockbank, Wayne (Eds.) RH : création de valeur pour l’entreprise (2010)

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See detailDéveloppement d’un modèle stoechiométrique de la sulfato-réduction par des bactéries sulfato-réductrices en lagunage anaérobie
Harerimana, Casimir ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2010), 14(S2), 577-582

One of the most known disadvantages of the technique of lagoon is the generation of smells, often associated with the presence of hydrogen sulfide (H2S), itself generated by the process of sulfate ... [more ▼]

One of the most known disadvantages of the technique of lagoon is the generation of smells, often associated with the presence of hydrogen sulfide (H2S), itself generated by the process of sulfate-reduction. In this paper, we have built a stoichiometric model of sulfate-reduction by providing balanced equations against the elements, electrons, charge and energy. In our model, sulfate acts as an electron acceptor and organic compounds such as lactate, propionate, butyrate, ethanol and acetate are in turn sources of carbon and electron donors. This model allows to quantify the production of sulfide and predicts the variation of alkalinity during the process of sulfate-reduction. [less ▲]

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See detailCO2 valorization by means of dielectric barrier discharge
Machrafi, Hatim ULg; Cavadias, S.; Amouroux, J.

(2010)

In order to reduce atmospheric pollution by CO2 (by transport and industrial applications), CO2 can be used as a source, instead of stocking it as a product. The case considered is the reaction between ... [more ▼]

In order to reduce atmospheric pollution by CO2 (by transport and industrial applications), CO2 can be used as a source, instead of stocking it as a product. The case considered is the reaction between CO2 and methane producing hydrogen: CO2 + CH4 2 CO + 2 H2 H° = 258.9 kJ/mole. The activation barrier of this endothermic reaction needs to be surpassed. The method of Dielectric Barrier Discharge (DBD) can be used, needing less energy than heating or catalytic pyrolysis. The process relies on the collision of electrons (forming reactive species), accelerated under an electrical field in the discharge area, facilitating the abovementioned reaction. The first step of the simulation in this work presents a 1D model in Matlab (Poisson equation, conservation of electrons and ions), obtaining an average electron and ion density. This is then introduced in a kinetic model of CH4/CO2 dissociation via electron collisions in the discharge region (Reaction Engineering module in COMSOL). Then COMSOL (continuity and Navier- Stokes equations) is used to model the flow in the post-discharge phase (reactions between vibrationally excited CO2 and CH4). Preliminary calculations for a plasma reactor model show that when the reactor wall is heated at 1000K, without electrical discharge, the decomposition of CO2 is 7.5%. With electrical discharge, the same decomposition is attained at a lower temperature, namely 880K. [less ▲]

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See detailMagnetocaloric effect in nano- and polycrystalline manganites La0.5Ca0.5MnO3
Pekala, Marek; Drozd, Vadym; Fagnard, Jean-François ULg et al

in Journal of Alloys & Compounds (2010), 507

Structure, magnetic and magnetocaloric properties of poly- and nanocrystalline La0.5Ca0.5MnO3 manganites prepared by the citrate sol–gel method are studied in a broad temperature range. The Arrott plots ... [more ▼]

Structure, magnetic and magnetocaloric properties of poly- and nanocrystalline La0.5Ca0.5MnO3 manganites prepared by the citrate sol–gel method are studied in a broad temperature range. The Arrott plots show that the phase transition is of the second order. The cooling efficiency of 93–97 J/kg is found for the poly- and nanocrystalline samples. The relatively weaker magnetocaloric effect in nanocrystalline La0.5Ca0.5MnO3 is spread over temperature range almost three times broader than for the polycrystalline one. Charge ordering effects decay in manganites with grain sizes below 150 nm. [less ▲]

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See detailLoading and skeletal development and maintenance.
Bergmann, P.; Body, J. J.; BOONEN, S. et al

in Journal of Osteoporosis (2010), 2011

Mechanical loading is a major regulator of bone mass and geometry. The osteocytes network is considered the main sensor of loads, through the shear stress generated by strain induced fluid flow in the ... [more ▼]

Mechanical loading is a major regulator of bone mass and geometry. The osteocytes network is considered the main sensor of loads, through the shear stress generated by strain induced fluid flow in the lacuno-canalicular system. Intracellular transduction implies several kinases and phosphorylation of the estrogen receptor. Several extra-cellular mediators, among which NO and prostaglandins are transducing the signal to the effector cells. Disuse results in osteocytes apoptosis and rapid imbalanced bone resorption, leading to severe osteoporosis. Exercising during growth increases peak bone mass, and could be beneficial with regards to osteoporosis later in life, but the gain could be lost if training is abandoned. Exercise programs in adults and seniors have barely significant effects on bone mass and geometry at least at short term. There are few data on a possible additive effect of exercise and drugs in osteoporosis treatment, but disuse could decrease drugs action. Exercise programs proposed for bone health are tedious and compliance is usually low. The most practical advice for patients is to walk a minimum of 30 to 60 minutes per day. Other exercises like swimming or cycling have less effect on bone, but could reduce fracture risk indirectly by maintaining muscle mass and force. [less ▲]

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See detailL'inertie thérapeutique en contraception.
Pintiaux, Axelle ULg; Bouüaert, Corine ULg; Habay, Nathalie ULg et al

in Revue Médicale de Liège (2010), 65(5-6), 391-4

The efficiency of contraception is linked to the method and the patient's compliance. The advice given by the physician about contraception use is essential to avoid unintended pregnancy. The accuracy of ... [more ▼]

The efficiency of contraception is linked to the method and the patient's compliance. The advice given by the physician about contraception use is essential to avoid unintended pregnancy. The accuracy of contraceptive choice and the individualized adaptation over time contribute to safe contraception. [less ▲]

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See detailComputing bounds for kernel-based policy evaluation in reinforcement learning
Fonteneau, Raphaël ULg; Murphy, Susan A.; Wehenkel, Louis ULg et al

Report (2010)

This technical report proposes an approach for computing bounds on the finite-time return of a policy using kernel-based approximators from a sample of trajectories in a continuous state space and ... [more ▼]

This technical report proposes an approach for computing bounds on the finite-time return of a policy using kernel-based approximators from a sample of trajectories in a continuous state space and deterministic framework. [less ▲]

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See detailComparison of accuracy of sonography, rectal palpation, and pregnancy-associated glycoproteins tests for pregnancy diagnosis in cows
Gajewski, Z.; Petrajtis, M.; Melo de Sousa, Noelita ULg et al

in Proceedings of the XIth Middle European Buiatrics Congress (2010)

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See detailEffectiveness of a semi-intensive multidisciplinary outpatient rehabilitation program in chronic low back pain
Demoulin, Christophe ULg; Grosdent, Stéphanie ULg; Capron, Lucile et al

in Joint Bone Spine (2010), 77

Objectives: To evaluate the efficacy of a semi-intensive multidisciplinary outpatient program complying with the requirements of the Belgian National Institute for Health and Disability Insurance and ... [more ▼]

Objectives: To evaluate the efficacy of a semi-intensive multidisciplinary outpatient program complying with the requirements of the Belgian National Institute for Health and Disability Insurance and intended for patients with chronic low back pain. Methods: Weincluded 262 patients with nonspecific chronic low back pain, amongwhom136 (73women and 63 men) with a mean pain duration of 11.3 years completed the outpatient program (36 sessions each lasting 2 h). The program consisted of education about back-sparing techniques, interventions by an occupational therapist and psychologist, and physical reconditioning. Three sessions (sessions 1, 18, and 36) were used to evaluate pain intensity, functional impairment, kinesiophobia, cognitive knowledge, knowledge of appropriate spinal movement technique, and physical performance (trunk muscle strength and endurance, mobility of the pelvis and lumbar spine, and aerobic capacity). Results: All study variables were significantly improved at study completion compared to baseline: pain intensity was decreased by 44%, functional impairment by 40%, and kinesiophobia by 11% whereas knowledge was improved by 59%, back-sparing technique by 95%, trunk muscle strength by 40% on average, trunk extensor muscle endurance by 90%, mobility by 8%, and aerobic capacity by 18%. Conclusions: A semi-intensive multidisciplinary outpatient program was beneficial in patients with chronic low back pain. Careful patient selection and increased patient involvement in the program may help to improve adherence. [less ▲]

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See detailGramaccioliite-(Y): paragenesis, chemical, structural, thermal expansion, and compressibility data on a new occurrence from Samos Island, Greece
Theye, Thomas; Hatert, Frédéric ULg; Ockenga, E. et al

in European Journal of Mineralogy (2010), 22

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See detailAssessment of exposure to persistent organochlorine compounds in epidemiological studies on breast cancer : a literature review and perspectives for the CECILE study
Bachelet, D.; Verner, M.-A.; Guihenneuc-Jouyaux, C. et al

in Acta Clinica Belgica (2010), 65(1), 49-57

Breast cancer is the most frequent neoplastic disease in women representing 50,000 new cases each year in France. The well-established risk factors, as those related to the reproductive history, cannot ... [more ▼]

Breast cancer is the most frequent neoplastic disease in women representing 50,000 new cases each year in France. The well-established risk factors, as those related to the reproductive history, cannot account for all cases of breast cancer. Other environmental or lifestyle factors need to be explored in depth. Persistent organochlorine compounds (OCs) have attracted attention because of their endocrine disrupting properties that make them possible risk factors for breast cancer, but most epidemiological studies did not report an association between OC concentrations in blood or adipose tissue and breast cancer risk. In these studies, OC levels were measured in biological samples obtained at the time of cancer diagnosis or only a few years before. In this paper, we review the studies on dichlorodiphenyltrichloroethane (DDT) and polychlorobiphenyl (PCB) exposures in relation to breast cancer. We discuss the relevance of OC biological measurements as lifelong exposure indicators, and we describe a new method for assessing exposure to OCs in epiderniological studies. Most studies were carried out recently and reported OC concentrations that were substantially lower than those reported during the 1960s and 1970s. We make the assumption that these OC levels were not reliable indicators, as they were not measured during etiologically relevant periods in a woman's lifetime, i.e. during the prenatal period, the puberty or the period before a first full-term pregnancy, which are regarded as key periods of vulnerability of mammary gland cells to carcinogens. This may have resulted in non differential exposure misclassification and hence in the absence of an observed association between OC levels and breast cancer in most epidemiological studies. Physiologically-based pharmacokinetic (PBPK) models allow estimating persistent organic pollutant lifetime toxicokinetics profiles retrospec- tively in women, by taking into account individual differences in metabolism and key events that affect OC kinetics such as lactation and weight variations. PBPK models will be applied to the participants of a large French population-based case-control study including 1080 cases and 1055 controls. Exposure misclassification could have prevented from observing an association between exposure to OCs and breast cancer risk. PBPK models could be used as a novel way of assessing exposure to OCs and to investigate the impact of internal exposure at different time windows on breast cancer incidence. [less ▲]

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See detailTowards a European Consumer Construction Law?
Kohl, Benoît ULg

in International Construction Law Review (2010), 27(2), 211-241

If European action is necessary for the unification of liabilities in the European construction industry, it may be wiser to commence Community action by focusing on the specific interests of private ... [more ▼]

If European action is necessary for the unification of liabilities in the European construction industry, it may be wiser to commence Community action by focusing on the specific interests of private consumers rather than seeking to develop a European Code covering all aspects of private construction law. The aim of this paper is to explain my preference for this focused approach and, by comparing the current state of the Law in England and in France, to establish the points of convergence that could constitute the basis of European intervention in that field. I will specifically deal with the differing approaches taken by both countries to identical social problems. In conclusion, I suggest a dual approach to harmonisation in the housing construction sector. After having fixed, in a European legislative instrument, the objectives of the substantive minimal protection that every consumer should be able to enjoy across Europe, Member States should be encouraged to provide self-regulatory bodies – or potentially even one international self-regulatory body at the European level - for the attainment of these objectives. This “co-regulation” mechanism, applied to my comparative study of French and English consumer protection in the housing sector, suggests that very few modifications at a national level in both countries would be required to meet the suggested harmonisation. [less ▲]

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See detailAngiogenic fast-growing melanomas and their micrometastases.
Quatresooz, Pascale ULg; Pierard, Claudine ULg; Paquet, Philippe ULg et al

in European Journal of Dermatology (2010), 20(3), 302-7

Malignant melanoma (MM), particularly its fast-growing type, is prone to interstitial, intravascular and extravascular migratory metastases. There is no information linking their growth fraction, the ... [more ▼]

Malignant melanoma (MM), particularly its fast-growing type, is prone to interstitial, intravascular and extravascular migratory metastases. There is no information linking their growth fraction, the configuration of the MM advancing edge, the extent in vascularity and the propensity to metastatic progression. The objective of this study was to determine the growth fraction, the size of vascularity and the contours of the progression border of 32 fast-growing MM with regard to the presence or absence of a micrometastatic spread inside the skin and overt metastases in the sentinel lymph nodes. In vivo high resolution colorimetry was performed as a clinical estimate of MM vascularity. Euclidean geometry and fractal analysis were used on immunohistochemical sections. The relative microvasculature profile area beneath MM, and the fractal dimension D of the MM frontline were assessed. The MIB/Ki-67 index was determined in MM cells. Value a* of colorimetry was similarly increased in the presence or absence of micro-metastases. No difference in growth fraction was revealed between these neoplasms. Correlations were found between vascularity and angiotropism, and between the micrometastatic process and the sentinel lymph node involvement. By contrast, no correlation was shown between vascularity and the fractal D dimension of the MM advancing edge. In sum, this study establishes a link between the extent of MM growth fraction, vascularity and the presence of dermal and nodal micrometastases in fast-growing MM. [less ▲]

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See detailOptimisatin de la fertilisation azotée des cultures légumières industrielles sous irrigation
Fonder, Nathalie; Heens, Benoit; Xanthoulis, Dimitri ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2010), 14(S1), 103-111

Les essais ont été menés sur un projet de quatre ans et ont testé cinq cultures légumières pour optimiser la fertilisation azotée sous irrigation avec des eaux usées. Le site expérimental était localisé ... [more ▼]

Les essais ont été menés sur un projet de quatre ans et ont testé cinq cultures légumières pour optimiser la fertilisation azotée sous irrigation avec des eaux usées. Le site expérimental était localisé dans le périmètre irrigué développé autour de l’usine de production de légumes surgelés, Hesbaye Frost. Dépendant de la rotation effectuée par le fermier, dont une partie du champ était sous expérimentation, quatre cultures légumières ont été testées (épinard, haricot, carotte et fève) ainsi qu’une céréale (froment d’hiver). Suite à la mise en place des essais et aux conditions climatiques, les cultures d’épinard en 1999 et de froment en 2000 n’ont pas testé le facteur irrigation. Les facteurs d’expérimentation étaient trois niveaux de fertilisation azotée différents par rapport à un témoin ne recevant pas d’azote minéral complémentaire et un apport ou non d’eaux usées par irrigation. L’impact de ces facteurs a été mesuré sur les rendements et les reliquats azotés dans le sol après culture. Pour les trois cultures légumières de haricot, carotte et fève qui ont pu être irriguées, les rendements ont toujours été statistiquement supérieurs lorsqu’il y avait un apport d’eau complémentaire par irrigation avec les eaux usées. Le facteur fumure a favorablement amélioré les rendements de l’épinard et du haricot, ainsi que le taux de protéines des céréales. Par contre, les parcelles de carotte et de fève qui n’avaient reçu aucune fumure azotée pendant respectivement trois et quatre années consécutives et qui n’ont pas reçu de fertilisation pour leur culture, n’ont pas donné des rendements statistiquement inférieurs. Le facteur fumure, quel que soit le niveau de fertilisation, n’a pas donné des rendements différents pour ces deux cultures. Les reliquats azotés dans le sol après récolte sont restés acceptables et normaux tant que la fertilisation recommandée n’était pas dépassée ; la fertilisation maximale testée, outrepassant les conseils de fumure raisonnée, a systématiquement laissé des reliquats en azote minéral dans le sol en quantité néfaste pour l’environnement. Ces résidus azotés principalement localisés dans les horizons supérieurs pouvaient être considérés comme récupérables par une culture intermédiaire piège à nitrate (CIPAN), pour autant que cette dernière soit installée dès la fin de l’été, l’automne étant considéré comme trop tardif pour avoir une influence sur la récupération de l’azote. Quel que soit le niveau de fertilisation, les reliquats azotés étaient importants pour la culture de fève par un phénomène de minéralisation en surface, dus aux conditions climatiques et à la charge en azote minéral apporté par les eaux usées utilisées pour l’irrigation. Les reliquats azotés en conditions de non-irrigation sont significativement plus importants que sous irrigation. L’irrigation permet une meilleure solubilisation de l’azote, ce qui facilite son assimilation par la culture en place et réduit les quantités résiduelles dans le sol après récolte. [less ▲]

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See detailShielding efficiency and E(J) characteristics measured on large melt cast Bi-2212 hollow cylinders in axial magnetic fields
Fagnard, Jean-François ULg; Elschner, Steffen; Bock, Joachim et al

in Superconductor Science and Technology (2010), 23

We show that tubes of melt cast Bi-2212 used as current leads for LTS magnets can also act as efficient magnetic shields. The magnetic screening properties under an axial DC magnetic field are ... [more ▼]

We show that tubes of melt cast Bi-2212 used as current leads for LTS magnets can also act as efficient magnetic shields. The magnetic screening properties under an axial DC magnetic field are characterized at several temperatures below the liquid nitrogen temperature (77 K). Two main shielding properties are studied and compared with those of Bi-2223, a material that has been considered in the past for bulk magnetic shields. The first property is related to the maximum magnetic flux density that can be screened, Blim; it is defined as the applied magnetic flux density below which the field attenuation measured at the centre of the shield exceeds 1000. For a cylinder of Bi-2212 with a wall thickness of 5 mm and a large ratio of length over radius, Blim is evaluated to 1 T at T = 10 K. This value largely exceeds the Blim value measured at the same temperature on similar tubes of Bi-2223. The second shielding property that is characterized is the dependence of Blim with respect to variations of the sweep rate of the applied field, dBapp/dt. This dependence is interpreted in terms of the power law E = Ec(J/Jc)^n and allows us to determine the exponent n of this E(J) characteristics for Bi-2212. The characterization of the magnetic field relaxation involves very small values of the electric field. This gives us the opportunity to experimentally determine the E(J) law in an unexplored region of small electric fields. Combining these results with transport and AC shielding measurements, we construct a piecewise E(J) law that spans over 8 orders of magnitude of the electric field. [less ▲]

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See detailEchographie endobronchique: une nouvelle technique d'investigation du mediastin
DUYSINX, Bernard ULg; HEINEN, Vincent ULg; Mobarak Zadeh, K. et al

in Revue Médicale de Liège (2010), 65 Spec no.

Mediastin pathology includes primary lesion and lymph node invasion. The exploration of this anatomical region remains difficult and even hazardous, particularly to obtain histological biopsies. No ... [more ▼]

Mediastin pathology includes primary lesion and lymph node invasion. The exploration of this anatomical region remains difficult and even hazardous, particularly to obtain histological biopsies. No invasive diagnostic exploration (thorax tomodensitometry and positron emission tomography) allows a histological precision, so mediastinoscopy remains the gold standard in the mediastinum investigation. However, it is not deprived of risk. Recently, guided biopsies and real-time transbronchial needle aspiration by endobronchial ultrasonography (EBUS) have been shown to increase the diagnostic yield over conventional bronchoscopic techniques. Therefore, EBUS is a suitable alternative to mediastinoscopy in the diagnosis of pulmonary or extra-thoracic malignancy, in the staging of mediastinal lymphadenopathy, and in the evaluation of mediastinal response after induction therapy. In the present paper, we present this new diagnostic approach and clarify the current indications of EBUS. [less ▲]

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See detailFast production of highly concentrated reactive [18F] fluoride for aliphatic and aromatic nucleophilic radiolabelling
Aerts, Joël ULg; Voccia, Samuel; Lemaire, Christian ULg et al

in Tetrahedron Letters (2010), 51

The use of a polymeric solid support loaded with a long alkyl chain quaternary ammonium allows the rapid and efficient recovery of cyclotron produced [18F]F- from [18O]water to a low water content organic ... [more ▼]

The use of a polymeric solid support loaded with a long alkyl chain quaternary ammonium allows the rapid and efficient recovery of cyclotron produced [18F]F- from [18O]water to a low water content organic solution compatible with fast nucleophilic labelling of most precursors for PET radiopharmaceuticals in high yield. [less ▲]

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