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
Peer Reviewed
See detail"One to rule them all"? The standardisation of nanotechnologies
Thoreau, François ULg

in European Journal of Risk Regulation (2011), 3

Detailed reference viewed: 59 (8 ULg)
Full Text
Peer Reviewed
See detailOne year experience of the Belgian Liver Intestine Comittee (BLIC) intranet database
Lerut, Jan; Roggen, F.; De Hemptinne, Bernard et al

in Acta Gastro-Enterologica Belgica (2001, January), 64(1), 7

Detailed reference viewed: 25 (3 ULg)
Full Text
Peer Reviewed
See detailOne year follow-up of ankle-brachial blood pressure index in hemodialized patients
Saint-Remy, Annie ULg; Sumaili, Ernest; Dubois, Bernard ULg et al

in Kidney & Blood Pressure Research (2006), 29

Detailed reference viewed: 10 (2 ULg)
Full Text
Peer Reviewed
See detailOne Year's Treatment of Paget's Disease of Bone by Synthetic Salmon Calcitonin as a Nasal Spray
Reginster, Jean-Yves ULg; Jeugmans-Huynen, A. M.; Albert, Adelin ULg et al

in Journal of Bone and Mineral Research : The Official Journal of the American Society for Bone and Mineral Research (1988), 3(3), 249-52

The effectiveness of synthetic salmon calcitonin (SCT) administered as a nasal spray was assessed via clinical, biological, and radiological variables in 17 previously untreated Pagetic patients over a 1 ... [more ▼]

The effectiveness of synthetic salmon calcitonin (SCT) administered as a nasal spray was assessed via clinical, biological, and radiological variables in 17 previously untreated Pagetic patients over a 1-year course of therapy. The results showed a highly significant decrease of serum alkaline phosphatase (S-ALP) (p less than 0.05 after 1 month of treatment) and of the urinary hydroxyproline/creatinine ratio (OH/Cr) (p less than 0.01 after 1 month of treatment). For the whole group, the mean decrease in S-ALP was 37 +/- 4% (SEM) after 6 months (p less than 0.01) and 31 +/- 5% after 1 year (p less than 0.01). The mean fall in OH/Cr was 35 +/- 6% (SEM) (p less than 0.01) and 37 +/- 7% (p less than 0.01) after 6 and 12 months, respectively. None of the usual side-effects of SCT were reported and local tolerance was excellent throughout the study. [less ▲]

Detailed reference viewed: 9 (1 ULg)
Full Text
Peer Reviewed
See detailOne's Own Face Is Hard to Ignore
Brédart, Serge ULg; Delchambre, Marie ULg; Laureys, Steven ULg

in Quarterly Journal of Experimental Psychology (2006), 59(1), 46-52

One's own face possesses two properties that make it prone to grab attention: It is a face, and, in addition, it is a self-referential stimulus. The question of whether the self-face is actually an ... [more ▼]

One's own face possesses two properties that make it prone to grab attention: It is a face, and, in addition, it is a self-referential stimulus. The question of whether the self-face is actually an especially attention-grabbing stimulus was addressed by using a face-name interference paradigm. We investigated whether interference from a flanking self-face on the processing of a target classmate's name was stronger than interference from a classmate's flanking face on the processing of one's own name as the target. In a control condition a third familiar face served as the flanker for both decisions from the participant's own name and from the classmate's name. The presentation of the self-face as a flanker produced significantly more interference on the identification of a classmate's name than the presentation of that classmate's face did on the identification of one's own name. This result was due to the interfering power of the self-face and not to a particular resistance of one's name to interfering facial stimuli. We argue that the emotional value or the high familiarity of one's own face may explain its attention-grabbing property. [less ▲]

Detailed reference viewed: 62 (28 ULg)
Full Text
Peer Reviewed
See detailOne-dimensional modelling of the plankton ecosystem of the north-western Corsican coastal area in relation to meteorological constraints
Skliris, Nikos; Elkalay, Khalid; Goffart, Anne ULg et al

in Journal of Marine Systems (2001), 27

In order to study the influence of wind mixing on the spring variability of the plankton production of the north western Corsican coastal area, a one-dimensional (1D), vertical, coupled hydrodynamic ... [more ▼]

In order to study the influence of wind mixing on the spring variability of the plankton production of the north western Corsican coastal area, a one-dimensional (1D), vertical, coupled hydrodynamic / biological model (ECOHYDROMV) is used. A hydrodynamic 1D model of the water column with a k–l turbulent closure is applied. The biological model comprises six state variables, representing the plankton ecosystem in the spring period: phytoplankton, copepods, nitrate, ammonium, particulate organic matter of phytoplanktonic origin and particulate organic matter of zooplanktonic origin. The system is influenced by turbulence (expressed by the vertical eddy diffusivity), temperature and irradiance. The model takes into account momentum and heat surface fluxes computed from meteorological data in order to simulate a typical spring atmospheric forcing for the considered area. Results show that primary production vertical structure is characterised by a subsurface maximum which deepens with time and is regulated by the opposite gradients of nitrate concentration and irradiance. Surface plankton productivity is mainly controlled by turbulent vertical transport of nutrients into the mixed layer. The short time scale variability of turbulent mixing generated by the wind appears to be responsible for the plurimodal shape of plankton blooms, observed in the considered area. Furthermore, the model is applied to the study of the spring evolution of the plankton communities off the bay of Calvi (Corsica) for the years 1986 and 1988. In order to initiate and validate the model, time series of hydrological, chemical and biological data have been used. The model reproduces accurately the spring evolution of the phytoplankton biomass measured in situ and illustrates that its strong variability in those years was in close relation to the variability of the wind intensity. [less ▲]

Detailed reference viewed: 43 (9 ULg)
Full Text
Peer Reviewed
See detailOne-dimensional time-dependent model of cardiac pacemaker activity generated by mechano-electric feedback in a thermo-electro-mechanical context
Collet, Arnaud ULg; Dauby, Pierre ULg

in Archives des Maladies du Coeur et des Vaisseaux. Pratique (2011, December), (Hors-série 3), 20

Detailed reference viewed: 30 (15 ULg)
Full Text
Peer Reviewed
See detailOne-dimensional unsteady flow simulations in nets of variable cross-section arms: comparison between finite element method and method of characteristics
Pochet, Thierry; Pirotton, Michel ULg

in Blain, W. R.; Cabrera, E. (Eds.) Hydraulic Engineering Software IV, Computer Techniques and Applications (1992)

Detailed reference viewed: 5 (0 ULg)
Full Text
See detailA One-Field Discontinuous Galerkin Formulation of Non-Linear Kirchhoff-Love Shells
Noels, Ludovic ULg

Conference (2009)

Spatially-discontinuous Galerkin methods constitute a generalization of weak formulations, which allow for discontinuities of the problem unknowns in its domain interior. This is particularly appealing ... [more ▼]

Spatially-discontinuous Galerkin methods constitute a generalization of weak formulations, which allow for discontinuities of the problem unknowns in its domain interior. This is particularly appealing for problems involving high-order derivatives, since discontinuous Galerkin (DG) methods can also be seen as a means of enforcing higher-order continuity requirements. Recently, DG formulations of linear and non-linear Kirchhoff-Love shell theories have been proposed. This new one-field formulations take advantage of the weak enforcement in such a way that the displacements are the only discrete unknowns, while the C1 continuity is enforced weakly. The resulting one field formulation is a simple and efficient method to model thin structures and can be applied to various computational methods. [less ▲]

Detailed reference viewed: 52 (9 ULg)
Full Text
See detailA one-field discontinuous Galerkin formulation of non-linear Kirchhoff-Love shells
Noels, Ludovic ULg

in International Journal of Material Forming (2009), 2(Suppl. 1), 877-880

Spatially-discontinuous Galerkin methods constitute a generalization of weak formulations, which allow for discontinuities of the problem unknowns in its domain interior. This is particularly appealing ... [more ▼]

Spatially-discontinuous Galerkin methods constitute a generalization of weak formulations, which allow for discontinuities of the problem unknowns in its domain interior. This is particularly appealing for problems involving high-order derivatives, since discontinuous Galerkin (DG) methods can also be seen as a means of enforcing higher-order continuity requirements. Recently, DG formulations of linear and non-linear Kirchhoff-Love shell theories have been proposed. This new one-field formulations take advantage of the weak enforcement in such a way that the displacements are the only discrete unknowns, while the C1 continuity is enforced weakly. The Resulting one field formulation is a simple and efficient method to model thin structures and can be applied to various computational methods. [less ▲]

Detailed reference viewed: 32 (10 ULg)
Full Text
See detailA one-field formulation of elasto-plastic shells with fracture applications
Becker, Gauthier; Noels, Ludovic ULg

Conference (2012, July)

The main feature of Discontinuous Galerkin (DG) methods is their ability to take into account discontinuities of the unknown field in the interior domain of studied problems. In such formulations the ... [more ▼]

The main feature of Discontinuous Galerkin (DG) methods is their ability to take into account discontinuities of the unknown field in the interior domain of studied problems. In such formulations the integration by parts is realized on the elements leading to boundary integral terms These terms between elements ensure the continuity and compatibility of the solution in a stable manner, which makes DG attractive to ensure weakly the C0 continuity and/or the C1 continuity. For non-linear Kirchhoff-Love shells, the C0/DG formulation - the C0 continuity is ensured as usual by considering continuous shape functions and the C1 continuity is weakly ensured by DG interface terms in a stable and consistent way - leads to a one-field formulation, where the displacements are the only unknowns of the problem [5]. DG methods have also an advantage when it comes to simulate fracture with a cohesive approach. Indeed, the classical cohesive methods suffer from severe limitations. The intrinsic approach, which inserts the cohesive elements at the beginning, requires an initial slope in the traction separation law and suffers from lack of consistency, while the extrinsic cohesive method, which inserts the cohesive elements during the simulation when a fracture criterion is reached, suffers from difficult parallel implementation due to the topological mesh modifications happening during the simulations. To overcome these limitations, new methods were developed and in particular, an approach based on a C0-discontinuous Galerkin formulation where continuity between elements is ensured weakly by the interface elements. These interface elements can be easily replaced by a cohesive element during the simulation, leading to an efficient fracture framework [4, 6]. We have recently extended this approach for linear shells [1] to obtain a full DG formulation of thin bodies, where discontinuities in the C0 and C1 fields are weakly enforced using consistent interface elements, and where the interface elements can be used to integrate the cohesive law when a fracture criterion is met. Moreover, a new cohesive law based on the reduced stresses of the thin bodies formulation is developed to propagate a fracture through the thickness. This cohesive model dissipates the right amount of energy during crack initiations and/or propagations. These developments are extended to non-linear elasto-plastic shells and are implemented in parallel, which allows to simulate complex fracture problems. As a validation example, the study of a blasted notched-cylinder is performed, for which experimental and numerical (by XFEM method) data are reported in the literature by [3]. Figure 1 illustrates the results obtained at different times. It can be seen that the simulation allows to model crack propagation, as well as the bifurcation happening when the crack reaches the top of the cylinder. Also, it appears that with the elasto-plastic framework, the crack speed numerically predicted matches the experimental measures [2]. [less ▲]

Detailed reference viewed: 11 (2 ULg)
Full Text
Peer Reviewed
See detailOne-loop finite corrections to seesaw neutrino masses
Aristizabal Sierra, Diego ULg

in PoS - Proceedings of Science (2011)

In the standard seesaw model, finite corrections to the neutrino mass matrix arise from one-loop self-energy diagrams mediated by heavy neutrinos. We discuss the impact that these corrections may have on ... [more ▼]

In the standard seesaw model, finite corrections to the neutrino mass matrix arise from one-loop self-energy diagrams mediated by heavy neutrinos. We discuss the impact that these corrections may have on the different entries of the tree-level effective neutrino mass matrix, paying special attention to their dependence with the seesaw model parameters. We also briefly comment on the implications these corrections might have on low-energy neutrino observables. [less ▲]

Detailed reference viewed: 15 (3 ULg)
Peer Reviewed
See detailA one-nucleotide difference in a cAMP and phorbol ester response element leads to differential regulation of the human chorionic somatomammotropin A and B gene transcription
Oury, Cécile ULg; Alsat, E.; Jacquemin, P. et al

in Journal of Molecular Endocrinology (1997), 18(2), 87-99

Human chorionic somatomammotropin (hCS) is encoded by two highly related genes, hCS-A and hCS-B, located in the hGH/hCS gene locus. Both genes are expressed in the syncytiotrophoblast layer of the ... [more ▼]

Human chorionic somatomammotropin (hCS) is encoded by two highly related genes, hCS-A and hCS-B, located in the hGH/hCS gene locus. Both genes are expressed in the syncytiotrophoblast layer of the placenta and hCS release from trophoblast cells is known to be increased by cAMP and phorbol esters. However, it remains unclear whether this regulation acts at the level of hCS gene expression or secretion and whether both genes are affected. We examined the effects of cAMP and phorbol 12-myristate 13-acetate (PMA) on the transcription of the hCS-A and hCS-B genes. Transient expression experiments revealed a 7 bp cAMP- and PMA-responsive element (CRElhCS-A) spanning nucleotides-1102 to -1096 upstream of the hCS-A gene. In contrast, the homologous sequence upstream of hCS-B (CRElhCS-B), differing from CRElhCS-A by a single substitution, shows little or no response to cAMP. In band-shift assays, the CRElhCS-A oligonucleotide was shown to bind two factors related to CREBP and AP-1, whereas CRElhCS-B only competes for one of these complexes. Finally, Southwestern analysis revealed that the CRElhCS-A element binds two ubiquitous proteins of 100 kDa and 47 kDa respectively, whereas CRElhCS-B interacts only with the 47 kDa protein. Taken together, these results suggest that a 47 kDa protein binding to the CRElhCS-A and CRElhCS-B elements is involved in the PMA response of the hCS-A and hCS-B genes, and a 100 kDa protein plays a crucial role in cAMP regulation of the hCS-A gene. [less ▲]

Detailed reference viewed: 23 (4 ULg)
Full Text
Peer Reviewed
See detailA One-Phase Thermomechanical Constitutive Model for the Numerical Simulation of Semi-Solid Thixoforming
Koeune, Roxane ULg; Ponthot, Jean-Philippe ULg

in Proceedings of ESAFORM 2008, Conference on material forming (2008)

A thermo mechanical one-phase elasto-visco-plastic constitutive law has been developed in order to model thixoforming processes. The simulation of a simple academic 2D test has revealed the forces and ... [more ▼]

A thermo mechanical one-phase elasto-visco-plastic constitutive law has been developed in order to model thixoforming processes. The simulation of a simple academic 2D test has revealed the forces and weaknesses of the proposed model. [less ▲]

Detailed reference viewed: 11 (3 ULg)
Full Text
Peer Reviewed
See detailA one-phase thermomechanical constitutive model for the numerical simulation of semi-solid thixoforming
Koeune, Roxane ULg; Ponthot, Jean-Philippe ULg

in International Journal of Material Forming (2008), suppl. 1

A thermomechanical one-phase elasto-visco-plastic constitutive law has been developed in order to model thixoforming processes. The simulation of a simple academic 2D test has revealed the forces and ... [more ▼]

A thermomechanical one-phase elasto-visco-plastic constitutive law has been developed in order to model thixoforming processes. The simulation of a simple academic 2D test has revealed the forces and weaknesses of the proposed model. [less ▲]

Detailed reference viewed: 30 (11 ULg)
Full Text
Peer Reviewed
See detailA one-phase thermomechanical Model for Semi-Solid thixoforming
Koeune, Roxane ULg; Ponthot, Jean-Philippe ULg

in Solid State Phenomena (2008), 141-143

Detailed reference viewed: 15 (3 ULg)
See detailOne-photon mazer resonances for arbitrary field modes
Bastin, Thierry ULg; Solano, E.

Poster (1999)

Detailed reference viewed: 3 (1 ULg)