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See detailEvaluation of the influence of age on pulmonary arterial pressure by use of right ventricular catheterization, pulsed-wave Doppler echocardiography, and pulsed-wave tissue Doppler imaging in healthy Beagles.
Mercier, Elise ULg; Mathieu, Myrielle; Sandersen, Charlotte ULg et al

in American Journal of Veterinary Research (2010), 71(8), 891-7

OBJECTIVE: To assess the influence of age on pulmonary hemodynamics and hemorheological properties in healthy dogs. ANIMALS: 14 healthy Beagles. PROCEDURES: Dogs were placed in 2 age groups as follows ... [more ▼]

OBJECTIVE: To assess the influence of age on pulmonary hemodynamics and hemorheological properties in healthy dogs. ANIMALS: 14 healthy Beagles. PROCEDURES: Dogs were placed in 2 age groups as follows: young dogs (<or= 5 years old; n = 8) and old dogs (>or= 8 years old; 6). Hematologic characteristics, plasma total protein and fibrinogen concentrations, and blood viscosity were measured. Systolic time intervals of pulmonary blood flow were recorded by pulsed-wave Doppler echocardiography. Early (E') and late (A') diastolic myocardial velocities, isovolumic contraction velocity, and systolic myocardial velocity of the free tricuspid annulus were recorded by pulsed-wave tissue Doppler imaging (TDI). Dogs were anesthetized and pulmonary arterial pressures (PAP) and cardiac output were recorded with a pediatric thermodilution Swan-Ganz catheter. RESULTS: Hemorheological measurements were not different between the 2 groups. Systolic, mean, and diastolic PAP were higher in old dogs, compared with values in young dogs; this difference was attributed to a high pulmonary vascular resistance and low arterial compliance in old dogs. Systolic time intervals of pulmonary blood flow stayed unchanged. The A' wave of the free tricuspid annulus was increased in old, compared with that young dogs, and the E':A' ratio was decreased. Pulmonary vascular resistance was inversely correlated with compliance. CONCLUSIONS AND CLINICAL RELEVANCE: The age of dogs should be taken into account when interpreting pulmonary hemodynamic results and TDI variables of right ventricular diastolic function. [less ▲]

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See detailEvaluation of the IOS as a non-invasive method for pulmonary function testing in horses
Van Erck, Emmanuelle; Art, Tatiana ULg; Lekeux, Pierre ULg

in Proceedings of the 36th British Equine Veterinary Association Congress (1997)

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See detailEvaluation of the lipid-drug association constant in model membranes: A monolayer approach
Goormaghtigh, E.; Brasseur, Robert ULg; Vanderbranden, M. et al

in Bioelectrochemistry and Bioenergetics (Lausanne, Switzerland) (1982), 9(4), 489-498

A general procedure of evaluation of the lipid-drug association constant in monolayer is presented. Lipids are spread at the air-water interface and the drugs injected into the aqueous subphase ... [more ▼]

A general procedure of evaluation of the lipid-drug association constant in monolayer is presented. Lipids are spread at the air-water interface and the drugs injected into the aqueous subphase. Association constant potential and predictions from the Gouy-Chapman theory. Several procedures of calculation are described. [less ▲]

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See detailEvaluation of the load bearing capacity of thin-walled steel members for long span composite floors
Rossi, Barbara ULg; Jaspart, Jean-Pierre ULg

in International Colloquium on Stability and Ductility of Steel Structures : SDSS2006, Lisbon 6-8 September 2006 (2006)

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See detailEvaluation of the long-term barrier effect of commercial resorbable guided tissue regenerative membranes : an in vitro study using human gingival fibroblasts
Grenade, Charlotte ULg; Borget, Pascal; Moniotte, Nicolas et al

Poster (2009)

Introduction The first part of the study devoted to guided tissue regenerative membranes was focused on a better understanding of the physicochemical and mechanical properties of commercial materials. The ... [more ▼]

Introduction The first part of the study devoted to guided tissue regenerative membranes was focused on a better understanding of the physicochemical and mechanical properties of commercial materials. The second objective of our study was to develop an in vitro device able to measure the long-term barrier effect of resorbable membranes. After the development of this new device, experiments were realized to characterize the long-term behaviour of commercially membranes with human gingival fibroblasts (HGF). Materials and methods The use of human gingival fibroblastic cells was chosen to get closer to biological conditions. Some gingival explants were removed in young and non-smoking healthy patients. From these explants, fibroblastic cells were isolated and cultivated. These cells will be able to be used between the third and the sixth passage. Resorbable membranes were chosen because they don’t require a second surgical operation. There are made of polyesters or collagen. A system based on inserts was developed in order to follow the degradation of membranes and the migration of cells across the material. The membrane was cut into 8 mm diameter punches and set in the bottom of the system. Once the whole was put together, it is laced into a 12 wells plate culture. First, the plates were put in an incubator at 37°C, during times ranging from 24 hours to several months. The barrier effect was then measured to reflect the gradual increase of permeability of each membrane. For this purpose, HGF were seeded on the different samples. The top of the bottle and the bottom of the well were then filled with culture medium. Non degradable synthetic Bioflex membranes were chosen as control samples which don't let pass cells (porosity : 0,4 µm). After 48 hours of incubation in the presence of cells, pictures of cells on membranes and in the bottom of wells were taken with an optic microscope. Viability tests (MTS) were then realized on membranes to evaluate cells proliferation and in the bottom of wells to measure barrier effect. Finally, the morphology of cells on selected membranes was characterized by Scanning Electron Microscopy. Conclusion Proliferation results correspond to data published by several authors. Furthermore, the barrier effect times found in the present study are similar to barrier effect times demonstrated in in vivo studies and announced by manufacturers. In conclusion, the finalized system is adapted to the analysis of long-term barrier effect of commercial GTR membranes. This system will be tested with synthetic bioresorbable membranes made of copolymers. [less ▲]

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See detailEvaluation of the MAR and WRF regional climate models over Svalbard
Lang, Charlotte ULg; Fettweis, Xavier ULg; Doutreloup, Sébastien ULg et al

Conference (2012, June 01)

It is well known that high latitude zones are very sensitive to climate change. As a result of global warming, ice sheet melting has increased which in turn has an influence on climate through ... [more ▼]

It is well known that high latitude zones are very sensitive to climate change. As a result of global warming, ice sheet melting has increased which in turn has an influence on climate through modifications of the thermohaline circulation, feedback of ice albedo, sea level rise... Svalbard is an archipelago between 74 and 81°lat N and 60 percent of its area (62 248 km2) is covered with glaciers and ice sheets. The impact of global warming on the Svalbard cryosphere can be estimated with climate models. However, we need to use regional climate models as they offer the possibility of a higher resolution than general circulation models. We have ran two regional climate models (MAR and WRF) at a 10-kilometre resolution between 2006 and 2010 over Svalbard and compared their simulated climate to near surface measurements at several weather stations through the archipelago in order to determine which one of them could best represent the Svalbard climate. [less ▲]

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See detailEvaluation of the mechanical integrity of a concrete surface by means of combined destructive methods
Courard, Luc ULg; Bissonnette, Benoît; Garbacz, Andrzej et al

in Grantham, Michael; Basheer, Muhammed; Magee, Bryan (Eds.) et al Proceedings of Concrete Solutions (2014)

As a tight bond between the repair and the old concrete is required, the soundness of the prepared surface has to be carefully assessed. This paper presents the results of an investigation intended to ... [more ▼]

As a tight bond between the repair and the old concrete is required, the soundness of the prepared surface has to be carefully assessed. This paper presents the results of an investigation intended to assess and compare quantitatively different test methods, namely the Schmidt rebound hammer, the pull-out test and the pull-off test, to evaluate superficial mechanical integrity of a substrate after concrete removal operations. Although it does not yield a precise evaluation of compressive strength, the Schmidt rebound hammer test is recognized as a useful tool for performing quick surveys to assess concrete uniformity. The pull-off test is very well correlated with the splitting-tensile test, but it is not suited for vertical and overhead surfaces. The Capo pull-out test has limited interest for surface preparation, as it is applicable to flat surfaces only. Conversely, the accelerated pull-out test showed interesting potential as a simple and relatively rapid means for assessing the mechanical integrity of a concrete surface prior to repair for any type of concrete surface. It appears from the results generated in this study that the combination Schmidt hammer / pull-off test could fill the needs for the evaluation of horizontal surfaces after concrete removal, while the combination Schmidt hammer / accelerated pull-out test could be used effectively on vertical and overhead surfaces. [less ▲]

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See detailEvaluation of the mechanical properties of plasma-sprayed coating by nanoindentation technology
Guo, Weichao; Rauchs, Gast; Papeleux, Luc ULg et al

in Mechanics & Industry (2012), 13(3), 151-162

In this paper, the mechanical properties of plasma-sprayed coatings are evaluated using the technology of nanoindentation. According to the indentation curve (load versus indenter’s displacement), which ... [more ▼]

In this paper, the mechanical properties of plasma-sprayed coatings are evaluated using the technology of nanoindentation. According to the indentation curve (load versus indenter’s displacement), which is recorded in an indentation experiment, the mechanical behaviour of the plasma-sprayed coating is investigated via inverse analysis using numerical optimization algorithms. The tip rounding of imperfect indenters is investigated in parameter identification. Subsequently, the hardness on the top surface and on the vertical cross section of the plasma-sprayed coating are investigated. The results show that the hardness on the top surface of the coating depends on the indentation depth. Moreover, the results show that the hardness on the cross section of the coating is significantly affected by the substrate if the indentation impression is too close to the coating-substrate interface. [less ▲]

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See detailEvaluation of the metabolic safety of aripiprazole
De Hert, M.; Van Eyck, D.; Hanssens, L. et al

in Schizophrenia Research (2006, January), 81(Suppl. S), 133

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See detailEvaluation of the metabolic safety of aripiprazole
De Hert, M.; Van Eyck, D.; Hanssens, L. et al

in European Neuropsychopharmacology (2006, September), 16(Suppl. 4), 399

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See detailEvaluation of the new BRAHMS-Biomerieux quantitative test for procalcitonin determination
Goffinet, Julie ULg; Bernard, Pierre ULg; Cavalier, Etienne ULg et al

in Acta Clinica Belgica (2007), 62(6), 463-463

Detailed reference viewed: 37 (7 ULg)
See detailEvaluation of the new Elisa CCp assay on unicap 100
Lutteri, Laurence ULg; Malaise, Michel ULg; Chapelle, Jean-Paul ULg

Poster (2005, October 27)

Detailed reference viewed: 12 (0 ULg)
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See detailEvaluation of the non-genetic factors of the racing performances of Arabian horses in Algeria
Tennah, Safia ULg; Kafidi, Nacerredine; Antoine-Moussiaux, Nicolas ULg et al

Poster (2012, October 19)

Selective breeding of Arabian horses in Algeria is not yet well developped. No accurate estimation of the breeding values of racing horses is carried out untill now. The estimation is based on one or ... [more ▼]

Selective breeding of Arabian horses in Algeria is not yet well developped. No accurate estimation of the breeding values of racing horses is carried out untill now. The estimation is based on one or several measurable traits, linked to race performance. To allow for an accurate estimation, it is important to determine the part of the phenotypic variability that is due to non-genetic factors (environmental). This first study estimates phenotypic correlations between the recorded traits in order to deduce to what extent the different measures bring different information on animal performance. Then it estimates the influence on performance of non-genetic factors such as sex, age, year of performance and the interactions between these various factors. From 1995 to 2007, the data related to flat racing was collected. The General Linear Model was used to identify and quantify the non-genetic factors affecting racing performances. Three traits were used: two earnings traits (the logarithm of annual virtual earnings: LAEV and the logarithm of average annual virtual earnings per start: LAEV/S), and one ranking trait (the ranking transformed and normalised: PERF). Significant high positive correlations was observed between the three traits (p<0.001), which thus give account of similar informative aptitudes. The effects of sex, age, year as well as the interactions between age and sex and between age and year turned out to be significant for the three traits (p<0.05). These results indicate the need to adjust the earnings and ranks traits in order to use them as criteria of selection of racing Arabian horses. [less ▲]

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