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See detailComparison of three NDT techniques for the inspection of aeronautic composite structures
Dubé, Robin; Scheed, Laurent; Lewandoswki, Jacques et al

Conference (2013, July 28)

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See detailComparison of three serological tests for the diagnosis of canine sino-nasal aspergillosis.
Billen, Frédéric ULg; Peeters, Dominique ULg; Peters, Iain et al

in Proceedings of the 18th ECVIM-CA Congress (2008, September)

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See detailComparison of three techniques for the serological diagnosis of Neospora caninum in the dog and their use for epidemiological studies
Lasri, S.; De Meerschman, F.; Rettigner, C. et al

in Veterinary Parasitology (2004), 123(1-2), 25-32

An enzyme-linked immunosorbent assay (ELISA) was developed in our laboratory and used to determine the seroprevalence of Neospora caninum in three different dog populations in Belgium: healthy dogs from ... [more ▼]

An enzyme-linked immunosorbent assay (ELISA) was developed in our laboratory and used to determine the seroprevalence of Neospora caninum in three different dog populations in Belgium: healthy dogs from cattle farms and urban dogs with or without various neurological disorders. The test was validated and compared with two other tests: an indirect fluorescent antibody test (IFAT) and a commercially available competitive enzyme-linked immunosorbent assay (C-ELISA). The study showed a good correlation between the IFAT and the ELISA developed. When the two tests were compared with the C-ELISA, moderate positive and negative agreement indices were observed. Using our ELISA and the IFAT techniques, a high prevalence was found in farm dogs. This result showed that the neurological symptoms are not usually associated with the Neospora infection. In conclusion, the ELISA developed in our laboratory could replace the IFAT for the screening of a large number of dogs' sera. (C) 2004 Elsevier B.V. All rights reserved. [less ▲]

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See detailComparison of transport in lysimeters with undisturbed loamy sand and silty soil using non invasive imaging with electrical resistivity tomography.
Garré, Sarah ULg; Koestel, Johannes; Vanderborght, Jan et al

in Geophysical Research Abstracts (2009, April 23)

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See detailComparison of transport in lysimeters with undisturbed loamy sand and silty soil using non-invasive imaging with electrical resistivity tomography
Garré, Sarah ULg; Koestel, Johannes; Javaux, Mathieu et al

Conference (2009, September)

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See detailComparison of transrectal ultrasound and plasma pregnancy-associated glycoprotein (PAG) as pregnancy tests of reindeer
Savela, H.; Vahtiala, S.; Lindeberg, H. et al

in Proceedings of the 16th International Congress on Animal Reproduction (2008)

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See detailA comparison of triangle and quadrangle finite elements for large strain elastoplastic formulations
KARASEVA, Olga; Stainier, Laurent ULg; Careglio, C. et al

in Proceedings of ACOMEN’2008, Advanced Computational Methods in Engineering (2008)

The paper presents a comparative study of different elastoplastic large strain formulations used in research groups in Mendoza and Li`ege. The comparison is focused on a few academic standardized problems ... [more ▼]

The paper presents a comparative study of different elastoplastic large strain formulations used in research groups in Mendoza and Li`ege. The comparison is focused on a few academic standardized problems, in particular necking of a cylindrical bar in tension. Stress distribution at necking section, as well as load histories are analyzed for all three formulations. Two other test cases consider bending of the so-called ”Greco” beam and upsetting of a cylinder. Numerical results show that all approaches yield very similar results and thus are equally valid. Furthermore, quadratic 6-noded triangles provide a good alternative to bilinear quadrangles, even if sometimes they appear to be more sensitive to big distorsions. [less ▲]

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See detailComparison of troponin I and troponin T changes after PTCA
Chapelle, Jean-Paul ULg

Conference (1999, February)

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See detailComparison of two automated solid-phase extraction methods for the HPLC determination of nifedipine in human plasma with electrochemical detection
Maes, P.; Sibenaler-Dechamps, R.; Zimmer, C. et al

in Journal de Pharmacie de Belgique (1992), 47

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See detailComparison of two drainage flow situations on a gentle forested slope
Heinesch, Bernard ULg; Yernaux, Michel ULg; Aubinet, Marc ULg

Poster (2010)

Drainage flows generated on a gentle slope in stable conditions were analysed at the forested site of Vielsalm (Belgium). Two distinct situations were encountered, one corresponding to vertical ... [more ▼]

Drainage flows generated on a gentle slope in stable conditions were analysed at the forested site of Vielsalm (Belgium). Two distinct situations were encountered, one corresponding to vertical convergence, characterised by a negative vertical velocity at the canopy top, the other corresponding to an equilibrium situation without any vertical movement. The causes of these two distinct flow patterns were analysed. Moreover, combined measurements of vertical velocity above the canopy and horizontal velocity divergence below the canopy were found to comply with the continuity equation: an acceleration of the horizontal flow was indeed observed in the trunk-space in convergence situations while not in equilibrium conditions. These measurements combined with those of the horizontal [CO2] gradient below the canopy were found to met the dilution hypothesis suggested by Aubinet et al.(2003): the horizontal [CO2] gradient was negative in convergence situations while slightly positive in equilibrium conditions. The existence of such patterns allows us to confirm the coherence of advection observations made at the site and help to better understand the mechanisms responsible of night flux exchanges at work in stable conditions in complex terrains. Nevertheless, difficulties were met when trying to obtain reliable estimates of the advection transport terms. The estimation of the vertical velocity in the trunk-space obtained by using the divergence measurements refuted the hypothesis of linearity of the vertical profile of vertical velocity, assumption usually used when computing vertical advection. This problem resulted in a great uncertainty on vertical advection which did not allowed to improve the night-flux estimation by adding advection terms to the turbulent flux and the storage. [less ▲]

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See detailComparison of two immunoassays for oxidized LDL determination
Le Goff, Caroline ULg; Haleng, Jeanine ULg; Denooz, André ULg et al

in Annales de Biologie Clinique (2009), 67(1),

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See detailComparison of two immunoassays for quantitative measurement of oxydized-LDL
Le Goff, Caroline ULg; Haleng, Jeanine ULg; Chapelle, Jean-Paul ULg

in Immuno-Analyse & Biologie Spécialisée [=IBS] (2009), 24

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See detailComparison of two inverse analysis techniques for learning deep excavation response
Hashash, Youssef; Levasseur, Séverine ULg; Osouli, Abdolreza et al

in Computers & Geotechnics (2010), 37

Performance observation is a necessary part of the design and construction process in geotechnical engineering. For deep urban excavations, empirical and numerical methods are used to predict potential ... [more ▼]

Performance observation is a necessary part of the design and construction process in geotechnical engineering. For deep urban excavations, empirical and numerical methods are used to predict potential deformations and their impacts on surrounding structures. Two inverse analysis approaches are described and compared for an excavation project in downtown Chicago. The first approach is a parameter optimization approach based on genetic algorithm (GA). GA is a stochastic global search technique for optimizing an objective function with linear or non-linear constraints. The second approach, self-learning simulations (SelfSim), is an inverse analysis technique that combines finite element method, continuously evolving material models, and field measurements. The optimization based on genetic algorithm approach identifies material properties of an existing soil model, and SelfSim approach extracts the underlying soil behavior unconstrained by a specific assumption on soil constitutive behavior. The two inverse analysis approaches capture well lateral wall deflections and maximum surface settlements. The GA optimization approach tends to overpredict surface settlements at some distance from the excavation as it is constrained by a specific form of the material constitutive model (i.e. hardening soil model); while the surface settlements computed using SelfSim approach match the observed ones due to its ability to learn small strain non-linearity of soil implied in the measured settlements. [less ▲]

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See detailComparison of two methods currently used to determine the interaction between cyclodextrins and drugs: phase solubility diagrams and NMR spectroscopy
Piel, Géraldine ULg; Moutard, Stephane; Perly, Bruno et al

in Journal of Drug Delivery Science and Technology (2004), 14(1, JAN-FEB), 87-91

Two methods usually used in the literature to determine stability constant values (Kc) of cyclodextrin complexes were compared: the phase solubility diagram and NMR spectroscopy. Two model drugs were used ... [more ▼]

Two methods usually used in the literature to determine stability constant values (Kc) of cyclodextrin complexes were compared: the phase solubility diagram and NMR spectroscopy. Two model drugs were used to determine limitations of both techniques: betamethasone and miconazole, with three cyclodextrins: beta-cyclodextrine (betaCD), dimethylated-betaCD (Dimeb) and trimethylated-betaCD (Trimeb). This study shows that both techniques can give the same Kc value if they are used in exactly the same conditions with well defined cyclodextrins. As a matter of fact, if the degree of substitution of cyclodextrin is not well defined (as it is often the case with Dimeb), results are biased. This study also shows that when interactions between both molecules are weak (< 1000 M-1), stability constants can not be determined by NMR due to low chemical shift variations. The limitations of the phase solubility diagram method are an oversimplification of the solubility data which can lead to large errors in the calculation of the stability constant values. Moreover, this method is time and material consuming. [less ▲]

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See detailA comparison of two methods for pulmonary function testing in horses with upper and lower airway obstruction
Van Erck, Emmanuelle; Duvivier, D. H.; Art, Tatiana ULg et al

Poster (1997, October 24)

Detailed reference viewed: 29 (0 ULg)