References of "2007"
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See detailAsian Foreign Exchange Risk Exposure
Muller, Aline ULg; Verschoor, Willem

in Journal of the Japanese & International Economies (2007), 21(1), 16-37

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See detailL'assiette du Belge en chiffres
Duquesne, Brigitte ULg

Poster (2007)

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See detailMeasuring Quantity-Quality Trade-Offs in Regulation: the Brazilian Freight Railways Case
Estache, Antonio; Perelman, Sergio ULg; Trujillo, Lourdes

in Annals of Public and Cooperative Economics = Annales de l'Economie Publique, Sociale et Coopérative (2007), 78(1), 1-20

The quantity vs. quality trade-offs in network industries are well known from the theoretical literature and have been the subject of many empirical assessments, although mostly for the telecoms and ... [more ▼]

The quantity vs. quality trade-offs in network industries are well known from the theoretical literature and have been the subject of many empirical assessments, although mostly for the telecoms and energy sectors. The purpose of this paper is to expand the evidence for the railway sector by documenting the importance of this trade-off in the context of the Brazilian freight railway industry reform, the first example of a railway sector in which tariff revisions are subject to joint output and quality performance indicators. The analysis is based on the calculation of the Malmquist productivity index proposed by Fare et al. (1995). The decomposable nature of this total factor productivity (TFP) index reveals the prevalence of quantity-quality trade-offs up to the end of the reform period, but a positive correlation between them during the period just afterwards. This type of information would certainly be useful for regulation purposes, particularly as an alternative way of taking into account quality without introducing complex, and very often ineffective, penalty schemes. [less ▲]

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See detailTraitement des pyodermites superficielles chez le chien
Cuvelier, Christine ULg

in Folia Veterinaria (2007), 2

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See detailBase-dependent electron photodetachment from negatively charged DNA strands upon 260-nm laser irradiation
Gabelica, Valérie ULg; Rosu, Frédéric ULg; Tabarin, Thibault et al

in Journal of the American Chemical Society (2007), 129(15), 4706-4713

DNA multiply charged anions stored in a quadrupole ion trap undergo one-photon electron ejection (oxidation) when subjected to laser irradiation at 260 nm (4.77 eV). Electron photodetachment is likely a ... [more ▼]

DNA multiply charged anions stored in a quadrupole ion trap undergo one-photon electron ejection (oxidation) when subjected to laser irradiation at 260 nm (4.77 eV). Electron photodetachment is likely a fast process, given that photodetachment is able to compete with internal conversion or radiative relaxation to the ground state. The DNA [6-mer](3-) ions studied here show a marked sequence dependence of electron photodetachment yield. Remarkably, the photodetachment yield (dG(6) > dA(6) > dC(6) > dT(6)) is inversely correlated with the base ionization potentials (G < A < C < T). Sequences with guanine runs show increased photodetachment yield as the number of guanine increases, in line with the fact that positive holes are the most stable in guanine runs. This correlation between photodetachment yield and the stability of the base radical may be explained by tunneling of the electron through the repulsive Coulomb barrier. Theoretical calculations on dinucleotide monophosphates show that the HOMO and HOMO-1 orbitals are localized on the bases. The wavelength dependence of electron detachment yield was studied for dG(6)(3-). Maximum electron photodetachment is observed in the wavelength range corresponding to base absorption (260-270 nm). This demonstrates the feasibility of gas-phase UV spectroscopy on large DNA anions. The calculations and the wavelength dependence suggest that the electron photodetachment is initiated at the bases and not at the phosphates. This also indicates that, although direct photodetachment could also occur, autodetachment from excited states, presumably corresponding to base excitation, is the dominant process at 260 nm. Excited-state dynamics of large DNA strands still remains largely unexplored, and photo-oxidation studies on trapped DNA multiply charged anions can help in bridging the gap between gas-phase studies on isolated bases or base pairs and solution-phase studies on full DNA strands. [less ▲]

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See detailLe secteur de la viande bovine dans l’Union européenne : situation et perspectives dans le contexte de l’environnement
Burny, Philippe ULg

in Sudia Universitatis, Babes-Bolyai, Ambientum I/1-2, 2007 (2007)

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See detailSelf-formation of hierarchical micro-meso-macroporous structures: Generation of the new concept "Hierarchical Catalysis"
Vantomme, A.; Léonard, Alexandre ULg; Yuan, Z.-Y. et al

in Colloids and Surfaces A : Physicochemical and Engineering Aspects (2007), 300(1-2 SPEC. ISS.), 70-78

The self-formation phenomenon of hierarchy with multiple-scaled porosity is reported. The structures of various chemical compositions, such as ZrO2, TiO2, Al2O3, Y2O3, Nb2O5, Ta2O5 ZrO2-SiO2, ZrO2-TiO2 ... [more ▼]

The self-formation phenomenon of hierarchy with multiple-scaled porosity is reported. The structures of various chemical compositions, such as ZrO2, TiO2, Al2O3, Y2O3, Nb2O5, Ta2O5 ZrO2-SiO2, ZrO2-TiO2, ZrO2-Y2O3, aluminosilicates, aluminophosphates, silicoaluminophosphates, metallophosphates, are made of macrochannels (0.5-5 μm in diameter) with mesoporous or microporous walls. The hierarchically porous structures are prepared by just controlling the hydrolysis and polycondensation rates of the pre-selected inorganic sources. The textural, structural as well as morphological properties of each material are carefully studied by using a large series of techniques, such as XRD, NMR, TEM, SEM, N2 adsorption-desorption, Hg porosimetry, optical microscopy. On the basis of these multimodal porous structures, a new concept "Hierarchical Catalysis" has been proposed. This new concept can allow the realisation of a multiple steps reaction in one single catalyst in a cascade way without any separation processes. © 2007 Elsevier B.V. All rights reserved. [less ▲]

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See detailLe rôle de la machine à traire dans l'apparition des mammites
Pluvinage, P.; Hanzen, Christian ULg

in Hebdo Vétérinaire (2007), 205

Les mammites ont toujours une origine multifactorielle. Dans ce cadre, la machine à traire est un point critique. Cet article (1re partie) en analyse l’impact dans la gestion de l’élevage, et les ... [more ▼]

Les mammites ont toujours une origine multifactorielle. Dans ce cadre, la machine à traire est un point critique. Cet article (1re partie) en analyse l’impact dans la gestion de l’élevage, et les observations à effectuer pour repérer un dysfonctionnement ou constater une inadéquation entre l’appareil et les animaux traits. [less ▲]

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See detailUnusually strong binding to the DNA minor groove by a highly twisted benzimidazole diphenylether: induced fit and bound water.
Tanious, Farial A; Laine, William; Peixoto, Paul ULg et al

in Biochemistry (2007), 46(23), 6944-56

RT29 is a dicationic diamidine derivative that does not obey the classical "rules" for shape and functional group placement that are expected to result in strong binding and specific recognition of the ... [more ▼]

RT29 is a dicationic diamidine derivative that does not obey the classical "rules" for shape and functional group placement that are expected to result in strong binding and specific recognition of the DNA minor groove. The compound contains a benzimidazole diphenyl ether core that is flanked by the amidine cations. The diphenyl ether is highly twisted and gives the entire compound too much curvature to fit well to the shape of the minor groove. DNase I footprinting, fluorescence intercalator displacement studies, and circular dichroism spectra, however, indicate that the compound is an AT specific minor groove binding agent. Even more surprisingly, quantitative biosensor-surface plasmon resonance and isothermal titration calorimetric results indicate that the compound binds with exceptional strength to certain AT sequences in DNA with a large negative enthalpy of binding. Crystallographic results for the DNA complex of RT29 compared to calculated results for the free compound show that the compound undergoes significant conformational changes to enhance its minor groove interactions. In addition, a water molecule is incorporated directly into the complex to complete the compound-DNA interface, and it forms an essential link between the compound and base pair edges at the floor of the minor groove. The calculated DeltaCp value for complex formation is substantially less than the experimentally observed value, which supports the idea of water being an intrinsic part of the complex with a major contribution to the DeltaCp value. Both the induced fit conformational changes of the compound and the bound water are essential for strong binding to DNA by RT29. [less ▲]

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See detailGlacial and interglacial sedimentary regimes at sites 1305 and 646 (S Greenland Rise) under 40 vs. 100 kyr forcings.
Hillaire-Marcel; De Vernal; Fagel, Nathalie ULg et al

Conference (2007)

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See detailRural entrepreneurship in the Walloon Region : focus on micro-entreprises profile and prospects
Brulard, Cécile; Dogot, Thomas ULg; Lebailly, Philippe ULg et al

in XXII ESRS Congress « New questions and challenges for rural Europe – Mobilities, Vulnerabilities and Sustainabilities » (2007)

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See detailDisplacement echoes: Classical decay and quantum freeze
Petitjean, Cyril ULg; Bevilaqua, Diego V.; Heller, Eric J. et al

in PHYSICAL REVIEW LETTERS (2007), 98(16), 164101-4

Motivated by neutron scattering experiments, we investigate the decay of the fidelity with which a wave packet is reconstructed by a perfect time-reversal operation performed after a phase-space ... [more ▼]

Motivated by neutron scattering experiments, we investigate the decay of the fidelity with which a wave packet is reconstructed by a perfect time-reversal operation performed after a phase-space displacement. In the semiclassical limit, we show that the decay rate is generically given by the Lyapunov exponent of the classical dynamics. For small displacements, we additionally show that, following a short-time Lyapunov decay, the decay freezes well above the ergodic value because of quantum effects. Our analytical results are corroborated by numerical simulations. [less ▲]

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See detailModelling of metal forming lubrication by O/W emulsions
MONTMITONNET, P.; STEPHANY, A.; CASSARINI, S. et al

in International Conference on Tribology in Manufacturing Processes. ICTMP 2007 (2007)

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See detailApproximations and their consequences for dynamic modelling of signal transduction pathways
Millat, Thomas; Bullinger, Eric ULg; Rohwer, Johann et al

in Mathematical Biosciences (2007), 207(1), 40-57

Signal transduction is the process by which the cell converts one kind of signal or stimulus into another. This involves a sequence of biochemical reactions, carried out by proteins. The dynamic response ... [more ▼]

Signal transduction is the process by which the cell converts one kind of signal or stimulus into another. This involves a sequence of biochemical reactions, carried out by proteins. The dynamic response of complex cell signalling networks can be modelled and simulated in the framework of chemical kinetics. The mathematical formulation of chemical kinetics results in a system of coupled differential equations. Simplifications can arise through assumptions and approximations. The paper provides a critical discussion of frequently employed approximations in dynamic modelling of signal transduction pathways. We discuss the requirements for conservation laws, steady state approximations, and the neglect of components. We show how these approximations simplify the mathematical treatment of biochemical networks but we also demonstrate differences between the complete system (c) 2006 Elsevier Inc. All rights reserved. [less ▲]

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See detailMedical Imaging in Engineering School
Verly, Jacques ULg

Scientific conference (2007)

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See detailMG-63 osteoblasts culture on poly-(lactic acid) degradable textiles for bone tissue regeneration
Moniotte, Nicolas; Pirotte, Fabrice; Borget, Pascal et al

Article for general public (2007)

This work shows that knitted PLA fabrics, seeded with human MG-63 osteoblasts can potentially be used as tissue engineered systems for in vitro to in vivo transition, for the treatment of bone defect

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See detailKarsts des craies et calcarénites de la Montagne Saint-Pierre (Basse Meuse liégeoise)
Willems, Luc; Rodet, Joël; Ek, Camille ULg et al

in Bulletin de la Société Royale Belge d'Etudes Géologiques et Archéologiques (2007), XLVI

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See detailAccuracy of size distributions obtained from single particle static digital image analysis.
Gregoire, Max; Dislaire, Godefroid; Pirard, Eric ULg

in Proceedings PARTEC2007 (2007)

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See detailPhysical properties at high magnetic fields in CeIn2.75Sn0.25
Ebihara, T.; Harrison, N.; Jaime, M. et al

in Journal of Magnetism & Magnetic Materials (2007), 310(2), 298-299

High magnetic field induces quantum criticality in CeIn3 with suppressing the Neel temperature. Estimated quantum critical. efield of CeIn3 is about 60T where the Neel temperature is suppressed to reach ... [more ▼]

High magnetic field induces quantum criticality in CeIn3 with suppressing the Neel temperature. Estimated quantum critical. efield of CeIn3 is about 60T where the Neel temperature is suppressed to reach absolute zero. The magnetic. field (60T) is too high to measure electrical resistivity or specific heat precisely. Sn doping to In site of CeIn3 reduces the Neel temperature. Reduction of Neel temperature indicates lower critical. field to facilitate investigation of electronic states at high magnetic. fields. Electrical resistivity and specific. c heat in CeIn2.Sn-85(0.25) were measured to map an H-T phase diagram. (c) 2006 Elsevier B. V. All rights reserved. [less ▲]

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