Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
See detailLattice Dynamics of Nanostructured Thermoelectric Materials
Claudio Weber, Tania ULg

Doctoral thesis (2013)

Detailed reference viewed: 96 (6 ULg)
Peer Reviewed
See detailLattice gas model of gradual evolution
Ausloos, Marcel ULg; Mroz, I.; Pekalski, A. et al

in Physica A: Statistical Mechanics and its Applications (1998), 248(1-2), 155-164

A simple dynamical model is presented for describing the gradual evolution of a variable number of species. The system is studied through Monte Carlo simulations using a lattice gas formalism. Each ... [more ▼]

A simple dynamical model is presented for describing the gradual evolution of a variable number of species. The system is studied through Monte Carlo simulations using a lattice gas formalism. Each species is characterized by a single, scalar parameter ("adaptation") which is changed, within limits depending on the adaptation itself, at each time step. There are two independent mechanisms for removing a species from the system and one for creating a new species. We find that, regardless of the initial concentration of species, the system always reaches the same final state, characterized by the same concentration and the same average adaptation. The system is not homogeneous and contains species with different values of adaptation. The better adapted ones are found to form more symmetrical spatial patterns. Behavior similar to the one determined in the present model has been found in the evolving ecological and biological systems. [less ▲]

Detailed reference viewed: 7 (2 ULg)
Full Text
Peer Reviewed
See detailLattice instabilities in bulk EuTiO3
Bessas, D.; Rushchanskii, K. Z.; Kachlik, M. et al

in PHYSICAL REVIEW B (2013), 88(14),

The phase purity and the lattice dynamics in bulk EuTiO3 were investigated both microscopically, using x-ray and neutron diffraction, Eu-151-Mossbauer spectroscopy, and Eu-151 nuclear inelastic scattering ... [more ▼]

The phase purity and the lattice dynamics in bulk EuTiO3 were investigated both microscopically, using x-ray and neutron diffraction, Eu-151-Mossbauer spectroscopy, and Eu-151 nuclear inelastic scattering, and macroscopically using calorimetry, resonant ultrasound spectroscopy, and magnetometry. Furthermore, our investigations were corroborated by ab initio theoretical studies. The perovskite symmetry, Pm (3) over barm, is unstable at the M- and R-points of the Brillouin zone. The lattice instabilities are lifted when the structure relaxes in one of the symmetries: I4/mcm, Imma, R (3) over barc with relative relaxation energy around -25 meV. Intimate phase analysis confirmed phase purity of our ceramics. A prominent peak in the Eu specific density of phonon states at 11.5 meV can be modeled in all candidate symmetries. A stiffening on heating around room temperature is indicative of a phase transition similar to the one observed in SrTiO3, however, although previous studies reported the structural phase transition to the tetragonal I4/mcm phase our detailed sample purity analysis and thorough structural studies using complementary techniques did not confirm a direct phase transition. Instead, in the same temperature range, Eu delocalization is observed which might explain the lattice dynamical instabilities. [less ▲]

Detailed reference viewed: 22 (0 ULg)
Full Text
Peer Reviewed
See detailLattice involvement in low temperature phase of U(Ru,Rh)(2)Si-2
Jaime, M.; Silhanek, Alejandro ULg; Kim, K. H. et al

in Physica B: Condensed Matter (2006), 378-80

Specific heat, magnetocaloric effect and magnetization experiments were performed on the 5f-electron system U(Ru0.96Rh0.04)(2)Si-2. This compound exhibits a non-magnetic ground state with a single ... [more ▼]

Specific heat, magnetocaloric effect and magnetization experiments were performed on the 5f-electron system U(Ru0.96Rh0.04)(2)Si-2. This compound exhibits a non-magnetic ground state with a single magnetic field-induced phase between H = 26 and 38 T. We show that the transition into this phase is first-order as revealed by a large irreversible specific heat anomaly and asymmetric magnetocaloric effect. A comparative analysis with the valence transition compound YbInCu4, where similar irreversibility and asymmetry exists, is presented. (c) 2006 Published by Elsevier B.V. [less ▲]

Detailed reference viewed: 19 (1 ULg)
Peer Reviewed
See detailA lattice model for BNE and RBNE
Ludewig, François ULg; Vandewalle, Nicolas ULg

in Powders and Grains 2005 (2005)

Detailed reference viewed: 14 (1 ULg)
Full Text
Peer Reviewed
See detailLattice of subalgebras in the finitely generated varieties of MV-algebras
Teheux, Bruno ULg

in Discrete Mathematics (2007), 307(17-18), 2261-2275

In this paper, we use the theory of natural duality to study subalgebra lattices in the finitely generated varieties of MV-algebras, With this tool, we obtain the dual atomicity of these lattices, and ... [more ▼]

In this paper, we use the theory of natural duality to study subalgebra lattices in the finitely generated varieties of MV-algebras, With this tool, we obtain the dual atomicity of these lattices, and characterize the members of these varieties in which every subalgebra is an intersection of maximal subalgebras. Then, we determine the algebras that have a modular or distributive lattice of subalgebras. [less ▲]

Detailed reference viewed: 41 (8 ULg)
Peer Reviewed
See detailLATTICE-DYNAMICS AND DIELECTRIC-PROPERTIES OF INCIPIENT FERROELECTRIC TIO2 RUTILE
LEE, C.; Ghosez, Philippe ULg; GONZE, X.

in Physical Review. B : Condensed Matter (1994), 50(18), 13379-13387

Detailed reference viewed: 19 (1 ULg)
Full Text
Peer Reviewed
See detailLaudanum. Notes pour un rêve de Tracy Moffat
Havelange, Carl ULg

in Strivay, Lucienne; LE ROUX, Géraldine (Eds.) La revanche des genres. Art contemporain australien/The revenge of Genres. Australian Contemporary Art (2007)

Detailed reference viewed: 15 (4 ULg)
Full Text
See detailLaudatio Alberto Manguel
Durand, Pascal ULg

Speech/Talk (2007)

Detailed reference viewed: 10 (1 ULg)
Full Text
See detailLaudatio Hubert Nyssen
Durand, Pascal ULg

Speech/Talk (2003)

Présentation de la double carrière d'Hubert Nyssen écrivain et éditeur à l'occasion de son doctorat honoris causa à l'Université de Liège

Detailed reference viewed: 19 (2 ULg)
Full Text
See detailLaura GIANVITTORIO, "Il discorso di Eraclito. Un modello semantico e cosmologico nel passagio dall’oralità alla scrittura"
Gavray, Marc-Antoine ULg

in Antiquité Classique : Revue Interuniversitaire d'Etudes Classiques (2012), 81

Detailed reference viewed: 43 (0 ULg)
Peer Reviewed
See detailLaura. Enduring – or enjoying – endurance training.
Cloes, Marc ULg; Hody, Stéphanie ULg; Jidovtseff, Boris ULg et al

in Armour, Katheleen (Ed.) Pedagogical cases in physical education and youth sport (2014)

This chapter presents a pedagogical case presenting a 15-year-old girl who met some episodes of drop in blood pressure in the morning when beginning school. Her physical education (PE) teacher has to find ... [more ▼]

This chapter presents a pedagogical case presenting a 15-year-old girl who met some episodes of drop in blood pressure in the morning when beginning school. Her physical education (PE) teacher has to find a way to deal with such situation. Three scientists from physiology, fitness training and psychology analyze the scenario and underline the knowledge that should be used by the PE teacher in order to implement appropriate lessons. Sport pedagogists propose then a concrete contribution based on this interdisciplinary analysis. Such paper is a fantastic adventure for scholars who are invited to exchange their representations, knowledge et ideas in order to develop strong approaches. The refective process is an example for preservice education but also for all practioneers and PE teacher educators. [less ▲]

Detailed reference viewed: 37 (12 ULg)
Full Text
Peer Reviewed
See detailLaurent (Brice), Les politiques des nanotechnologies. Pour un traitement démocratique d’une science émergente
Thoreau, François ULg

in Politix : Revue des Sciences Sociales du Politique (2011), 2011/4(96), 187-190

Detailed reference viewed: 39 (6 ULg)
See detailLaut- und Graphementsprechungen
Lutjeharms, Madeline; Möller, Robert ULg

in Hufeisen, Britta; Marx, Nicole (Eds.) EuroComGerm - Die sieben Siebe: Germanische Sprachen lesen lernen (2007)

Detailed reference viewed: 25 (0 ULg)
Peer Reviewed
See detailLautréamont : une politique du corps ?
Durand, Pascal ULg

Conference (2002, September 26)

Detailed reference viewed: 7 (1 ULg)
See detailLavantamento da Brucella mellitensis no rebanho caprino leiteiro da Grande Fortaleza
Rodrigues, A. P. R.; Melo de Sousa, Noelita ULg; Sousa, M. Z. G.

in Anais du II Encontro de Iniciação Científica da UECE (1993)

Detailed reference viewed: 8 (2 ULg)
See detailIl lavoro clinico con i genitori omosessuali
D'Amore, Salvatore ULg

Scientific conference (2012, July 07)

Detailed reference viewed: 16 (3 ULg)