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See detailLes équilibres de dissociation moléculaire
Swings, Polydore ULg

in Astronomie (L') (1957), 71

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See detailEquilibres et déséquilibres politiques et sociaux : trente ans de stabilité partisane et de déséquilibres spatiaux
Matagne, Geoffroy ULg; Verjans, Pierre ULg

Conference (2010, October 15)

Depuis l'installation du parlement wallon, il y a trente ans, les résultats électoraux montrent une stabilité dans le temps et une disparité intrarégionale. Classer les arrondissements wallons lors de l ... [more ▼]

Depuis l'installation du parlement wallon, il y a trente ans, les résultats électoraux montrent une stabilité dans le temps et une disparité intrarégionale. Classer les arrondissements wallons lors de l'élection du parlement wallon en trois catégories, suivant le modèle développé par Marcel Hotterbeex, permet d'expliquer le comportement électoral en Wallonie. [less ▲]

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See detailEquilibrium and dynamic methods when comparing an English text and its Esperanto translation
Ausloos, Marcel ULg

in Physica a-Statistical Mechanics and Its Applications (2008), 387(25), 6411-6420

A comparison of two English texts written by Lewis Carroll, one (Alice in Wonderland), also translated into Esperanto, the other (Through the Looking Glass) are discussed in order to observe whether ... [more ▼]

A comparison of two English texts written by Lewis Carroll, one (Alice in Wonderland), also translated into Esperanto, the other (Through the Looking Glass) are discussed in order to observe whether natural and artificial languages significantly differ from each other. One dimensional time series like signals are constructed using only word frequencies (FFS) or word lengths (LTS). The data is studied through (i) a Zipf method for sorting out correlations in the FFS and (ii) a Grassberger-Procaccia (GP) technique based method for finding correlations in LTS. The methods correspond to an equilibrium and a dynamic approach respectively to human texts features. There are quantitative statistical differences between the original English text and its Esperanto translation, but the qualitative differences are very minutes. However different power laws are observed with characteristic exponents for the ranking properties, and the phase space attractor dimensionality. The Zipf exponent can take values much less than unity (similar to 0.50 or 0.30) depending on how a sentence is defined. This variety in exponents can be conjectured to be an intrinsic measure of the book style or purpose, rather than the language or author vocabulary richness, since a similar exponent is obtained whatever the text. Moreover the attractor dimension r is a simple function of the so called phase space dimension n, i.e., r = n(lambda), with lambda = 0.79. Such an exponent could also be conjectured to be a measure of the author style versatility, - here well preserved in the translation. (C) 2008 Elsevier B.V. All rights reserved. [less ▲]

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See detailEquilibrium and metastable phase transitions in silicon nitride at high pressure: A first-principles and experimental study
Xu, Bin ULg; Dong, J.; McMillan, P. F. et al

in Physical Review. B, Condensed Matter and Materials Physics (2011), 84(1),

We have combined first-principles calculations and high-pressure experiments to study pressure-induced phase transitions in silicon nitride (Si 3N 4). Within the quasi-harmonic approximation, we predict ... [more ▼]

We have combined first-principles calculations and high-pressure experiments to study pressure-induced phase transitions in silicon nitride (Si 3N 4). Within the quasi-harmonic approximation, we predict that the α phase is always metastable relative to the β phase over a wide pressure-temperature range. Our lattice vibration calculations indicate that there are two significant and competing phonon-softening mechanisms in the β-Si 3N 4, while phonon softening in the α-Si 3N 4 is rather moderate. When the previously observed equilibrium high-pressure and high-temperature β → γ transition is bypassed at room temperature (RT) due to kinetic reasons, the β phase is predicted to undergo a first-order structural transformation to a denser P6̄ phase above 39 GPa. The estimated enthalpy barrier height is less than 70 meV/atom, which suggests that the transition is kinetically possible around RT. This predicted new high-pressure metastable phase should be classified as a "postphenacite" phase. Our high-pressure x-ray diffraction experiment confirms this predicted RT phase transition around 34 GPa. No similar RT phase transition is predicted for α-Si 3N 4. Furthermore, we discuss the differences in the pressure dependencies of phonon modes among the α, β, and γ phases and the consequences on their thermal properties. We attribute the phonon modes with negative Grüneisen ratios in the α and β phases as the cause of the predicted negative thermal expansion coefficients (TECs) at low temperatures in these two phases, and predict no negative TECs in the γ phase. © 2011 American Physical Society. [less ▲]

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See detailEquilibrium and non Equilibrium study of the Fine Pearlite Formation in two Cast High Speed Steels after solidification and thermal treatment
Tchuindjang, Jérôme Tchoufack ULg; Lecomte-Beckers, Jacqueline ULg

in International Journal of Materials Research (2011)

Two High Speed Steels (HSS) have been studied both having chemical compositions closed one to another. Both HSS grades exhibited similar matrix/carbides microstructure in the industrial as-cast conditions ... [more ▼]

Two High Speed Steels (HSS) have been studied both having chemical compositions closed one to another. Both HSS grades exhibited similar matrix/carbides microstructure in the industrial as-cast conditions, except for M7C3 eutectic carbides only observed in one grade and fine pearlite only found in the other grade. Equilibrium diagrams were obtained from Thermodynamical simulations to enhanced predicted phase transformations whereas Differential Thermal Analysis was performed on both alloys in order to determine their crystallization behaviour in non equilibrium conditions. Light microscopy and Electron microscopy associated with microprobe analyses were done to characterize the microstructure of both alloys. Thermal treatments with related bulk hardness assessments were carried out to enhance conditions for pearlite formation at the end of the casting route. In continuous cooling conditions obtained from DTA simulations, the matrix of both as-cast HSS grades is composed of eutectic carbides, martensite and retained austenite, these phases exhibiting similar chemical compositions. The introduction of an intermediate isothermal stage in the solid state within the DTA cooling sequence leads to the formation of a fine pearlite phase mainly located in the vicinity of M2C eutectic carbides on one HSS grade. The origin of this fine pearlite is discussed in this paper. [less ▲]

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See detailEquilibrium basal-plane magnetization of superconductive YNi(2)B(2)C: The influence of nonlocal electrodynamics
Thompson, J. R.; Silhanek, Alejandro ULg; Civale, L. et al

in Physical Review. B : Condensed Matter (2001), 64(2),

For a single crystal of YNi(2)B(2)C superconductor, the equilibrium magnetization M in the square basal Plane has been studied experimentally as a function of temperature and magnetic field. While the ... [more ▼]

For a single crystal of YNi(2)B(2)C superconductor, the equilibrium magnetization M in the square basal Plane has been studied experimentally as a function of temperature and magnetic field. While the magnetization M(H) deviates from conventional London predictions, a recent extension of London theory (to include effects of nonlocal electrodynamics) describes the experiments accurately. The resulting superconductive parameters are well behaved. These results are compared with corresponding findings for the case with M perpendicular to the basal plane. [less ▲]

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See detailEquilibrium charge-state distributions of sodium ions in carbon foil
Tordoir, Xavier ULg; Bastin, Thierry ULg; Dumont, Paul-Dominique ULg et al

in Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms (2001), 173

The equilibrium charge-state distributions have been measured for sodium ions at the exit of a carbon foil for energies ranging from 0.43 to 1.66 Me V. A comparison of our results with available models is ... [more ▼]

The equilibrium charge-state distributions have been measured for sodium ions at the exit of a carbon foil for energies ranging from 0.43 to 1.66 Me V. A comparison of our results with available models is performed and an empirical formula for calculating the charge-state fractions of sodium ions is deduced. [less ▲]

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See detailThe equilibrium finite element model and error estimation for plate bending
Nguyen-Xuan, Hung; Debongnie, Jean-François ULg

Conference (2004, August)

This paper presents a procedure for computing approximate solution of bending Kirchhoff plate with an equilibrium finite element model. The accuracy of the equilibrium approach is evaluated through the ... [more ▼]

This paper presents a procedure for computing approximate solution of bending Kirchhoff plate with an equilibrium finite element model. The accuracy of the equilibrium approach is evaluated through the concept of error estimator. Especially, a dual analysis by finite elements which leads to lower and upper bounds of the exact solution is presented in numerical examples. [less ▲]

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See detailAn equilibrium model for plate bending
Fraeijs de Veubeke, Baudouin ULg; Sander, Guy

in International Journal of Solids and Structures (1968), 4

A conforming displacement model for plate bending was presented earlier. It is of intyerest to have also an equilibrium moàdel available in order to generate both upper and lower bounds to plate ... [more ▼]

A conforming displacement model for plate bending was presented earlier. It is of intyerest to have also an equilibrium moàdel available in order to generate both upper and lower bounds to plate deflections. The theory of the triangular equilibriium model, which is presented here, takes advantage of oblique coordinates. Il allows to cover transvers loading modes. Because the numerical investigations required adaptibility of the model to a stiffness computer-program, only the elaboration of the stiffness matrix was aimed at. The element can nevertheless be recognised as the Southwell analogue of the plane stress model with quadratic displacement field. As such it can be handled efficiently by a force program. Numerical results show the monotonic convergence of deflections from above for the equilibrium model and from below for the conforming model. The convergence rate, in terms of generalized coordinates, is compâred with that of other plate bending elements. [less ▲]

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See detailThe equilibrium pricing models: their relationships and their application to portfolio theory
Corhay, Albert ULg

in Cahiers Économiques de Bruxelles (1990), (125), 33-51

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See detailThe Equilibrium Princing Models : Their Relationships and their Application to Portfolio theory
Corhay, Albert ULg

in Cahiers Economiques de Bruxelles (1990), 125(1er Trimestre), 33-51

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See detailEquilibrium traffic assignment on large Virtual Networks: Implementation issues and limits for multi-modal freight transport
Jourquin; Limbourg, Sabine ULg

in European Journal of Transport and Infrastructure Research (2006), 6(3), 205-228

Multi-Modal freight models are traditionally built following the well known “four steps model” in which generation, distribution, modal-split and assignment are seen as separated modules. An alternative ... [more ▼]

Multi-Modal freight models are traditionally built following the well known “four steps model” in which generation, distribution, modal-split and assignment are seen as separated modules. An alternative approach, now implemented in some software, is to represent the multi-modal network by means of a “mono-modal” one, in which each particular transport operation (loading or unloading operation, transhipments ...) is represented by a dedicated “virtual link”, that represents a specific operation in the transportation chain. This approach, promoted by several authors, often referenced to as “super networks” or “virtual networks”, is proven to give interesting results, but has the drawback to generate much larger networks than the pure geographic representation of the studied area. It has also some kind of “hidden trap”, linked to transport distances, that will be presented in this paper and that can only be solved using appropriate assignment techniques. This paper presents some results obtained on a large multi-modal network, using different equilibrium assignment algorithms, in order to test their ability to give an appropriate solution to the “distance trap”. It however concludes that the implementation of classical equilibrium assignment techniques leads to solutions that are barely different from the one obtained by a simple all-or-nothing assignment, opening the way to alternative multi-flow solutions. [less ▲]

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See detailEquine atypical myopathy. Letters (equine health)
Votion, Dominique ULg; Van Galen, Gaby ULg; Marr, C. M.

in Veterinary Record : Journal of the British Veterinary Association (2009), 165

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See detailEquine atypical myopathy: a review
Votion, Dominique ULg; Serteyn, Didier ULg

in Veterinary Journal (2008), (178), 185-190

Atypical myopathy (AM) is an acute rhabdomyolysis syndrome that occurs at irregular intervals in grazing equines. An increasing number of outbreaks have been reported in recent years, including some from ... [more ▼]

Atypical myopathy (AM) is an acute rhabdomyolysis syndrome that occurs at irregular intervals in grazing equines. An increasing number of outbreaks have been reported in recent years, including some from countries where the disease has not previously been diagnosed. In this review, clinical and other details of outbreaks of AM are analysed to better define its epidemiological profile. Potential aetiologies are discussed, the short clinical course of AM is described and the main biochemical and pathological findings are considered. Recommendations for medical management are suggested, based on a review of clinical reports. Biochemical and histopathological findings have been integrated in order to characterise the physiopathology of AM. There is an ongoing requirement to record new cases of this syndrome, ideally through an epidemiological network. [less ▲]

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See detailEquine Biosecuity in Practice
Van Galen, Gaby ULg

Conference (2011, October 08)

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See detailEquine coital exanthema and its potential économic implications for the equine industry
Barrandeguy, M.; Thiry, Etienne ULg

in Veterinary Journal (2012), 191

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See detailEquine Emerging Diseases
Van Galen, Gaby ULg

Conference (2011, October 08)

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See detailEquine frozen semen parameters in relation with total myeloperoxidase concentration
Ponthier, Jérôme ULg; Franck, Thierry ULg; Mottart, Evelyne et al

in Animal Reproduction Science (2008, September 15)

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See detailEquine gammaherpesviruses : pathogenesis, epidemiology and diagnosis
Fortier, Guillaume; Van Erck, Emmanuelle ULg; Pronost, Stéphane et al

in Veterinary Journal (2010), 186

Equine gammaherpesviruses (cEHV) have been widely studied over the past 45 years and many isolates have been characterised. Despite this, the diagnosis of cEHV infection remains difficult to establish as ... [more ▼]

Equine gammaherpesviruses (cEHV) have been widely studied over the past 45 years and many isolates have been characterised. Despite this, the diagnosis of cEHV infection remains difficult to establish as its clinical manifestations lack specificity, ranging from mild respiratory signs in a small number of animals to outbreaks in large groups of young horses. This review focuses on the epidemiology, pathogenesis, clinical manifestations and diagnosis of equine herpesvirus (EHV)-2 and -5 infections, as well as on the genetic variation of these viruses. Study of these variations has resulted in hypotheses relating to viral re-infection and re-activation. Interestingly, the viruses were found to contain genetic sequences identical to those of eukaryotic cells which are considered central to the development of viral latency through interfering with host immune and inflammatory responses. Future molecular biological studies will further elucidate the virulence mechanisms of these equine pathogens [less ▲]

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