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See detailEvaluation of pyridinic sulfonamides related to nimesulide as COX-2 selective inhibitors
Julémont, F.; De Leval, X.; Neven, P. et al

in Fundamental & Clinical Pharmacology (2002)

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See detailEvaluation of realtime spray drift using RTDrift Gaussian advection-diffusion model
Lebeau, Frédéric ULg; Verstraete, Arnaud ULg; Schiffers, Bruno ULg et al

in Spanoghe, Pieter (Ed.) COMMUNICATIONS IN AGRICULTURAL AND APPLIED BIOLOGICAL SCIENCES (2009, May 19)

A spray drift model was developed to deliver real time information to the pesticide applicator. The sprayer is equipped with sensors to deliver real time measurement of operational parameters as spray ... [more ▼]

A spray drift model was developed to deliver real time information to the pesticide applicator. The sprayer is equipped with sensors to deliver real time measurement of operational parameters as spray pressure, boom height, horizontal boom movements and geolocalization. The spray droplet size spectrum as a function of pressure was characterized using PDI measurements. Wind speed and direction were measured using a sprayer mounted 2-D ultrasonic anemometer. For each successive boom position, a diffusion-advection Gaussian tilting plume model is used to compute the spray drift deposits downwind. Drift is computed independently for each droplet classes and each nozzle based on the operating parameters. Field trials were performed on a test plot in various wind conditions. The ground drift was measured for different drift distances using fluorimetry analysis. Results show that drift deposits are mainly affected by wind speed and direction what was correctly accounted for by the model. Short distance drift deposits values were overestimated by the model while long distance drift was underestimated. It appears that this most probably origins from embarked wind speed measurements and diffusion parameter. It is concluded that a treatment of embarked wind speed and diffusion measurement should be used to minimize these errors. [less ▲]

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See detailEvaluation of respiratory function by barometric whole-body plethysmography in healthy dogs
Talavera, J.; Kirschvink, N.; Schuller, S. et al

in Veterinary Journal (2006), 172(1), 67-77

The objective of the present study was to assess the validity of barometric whole-body plethysmography (BWBP), to establish reference values, and to standardise a bronchoprovocative test to investigate ... [more ▼]

The objective of the present study was to assess the validity of barometric whole-body plethysmography (BWBP), to establish reference values, and to standardise a bronchoprovocative test to investigate airway responsiveness using BWBP in healthy dogs. BWBP measurements were obtained from six healthy beagle dogs using different protocols: (1) during three consecutive periods (3.5 min each) in two morning and two evening sessions; (2) before and after administration of two protocols of sedation; (3) before and after nebulisation of saline and increasing concentrations of carbachol and histamine both in conscious dogs and in dogs under both protocols of sedation. Enhanced pause (PENH) was used as index of bronchoconstriction. Basal BWBP measurements were also obtained in 22 healthy dogs of different breeds, age and weight. No significant influence of either time spent in the chamber or daytime was found for most respiratory variables but a significant dog effect was detected for most variables. A significant body weight effect was found on tidal volume and peak flow values (P < 0.05). Response to carbachol was not reproducible and always associated with side effects. Nebulisation of histamine induced a significant increase in respiratory rate, peak expiratory flow, peak expiratory flow/peak inspiratory flow ratio and PENH (P < 0.05). The response was reproduced in each dog at different concentrations of histamine. Sedation with acepromazine + buprenorphine had little influence on basal measurements and did not change the results of histamine challenge. It was concluded that BWBP is a safe, non invasive and reliable technique of investigation of lung function in dogs which provides new opportunities to characterise respiratory status, to evaluate airway hyperresponsiveness and to assess therapeutic interventions. (c) 2005 Elsevier Ltd. All rights reserved. [less ▲]

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See detailEvaluation of response to gene therapy for malignant gliomas with FDG PET imaging and MRI
HUSTINX, Roland ULg; HACKNEY, D.; BENARD, F. et al

in Journal of Nuclear Medicine (The) (1998), 39

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See detailEvaluation of ribotyping versus pulsed-field gel electrophoresis for epidemiologic typing of Pseudomonas pickettii
Chetoui, Hafid; MELIN, Pierrette ULg; Struelens, M. J. et al

Poster (1996, September)

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See detailEvaluation of right-ventricular function by gated blood-pool scintigraphy.
Legrand, Victor ULg; Chevigne, M.; Foulon, J. et al

in Journal of nuclear medicine : official publication, Society of Nuclear Medicine (1983), 24(10), 886-93

The purpose of this paper is to review several modalities that can be helpful in evaluating right-ventricular (RV) function. We have investigated the role of functional imaging in analysis of regional RV ... [more ▼]

The purpose of this paper is to review several modalities that can be helpful in evaluating right-ventricular (RV) function. We have investigated the role of functional imaging in analysis of regional RV function and in selection of RV region of interest (ROI). From this we have derived a method to determine the RV ejection fraction using a single RV ROI. The analysis is performed in a modified LAO projection; Fourier phase and amplitude functional images are used to help trace the ROI and study wall-motion abnormalities. This method is compared with the double-ROI technique of Maddahi. Values of RV ejection fraction obtained with one ROI correlate well with those obtained using two ROIs (r = 0.95). The regression equation is used to correct for the single-ROI underestimation. The inter- and intra-observer variability is better for the single- than for the double-ROI technique. RV function studies are performed in normal volunteers and in patients with a variety of cardiac disorders. Changes in RV ejection fraction caused either by direct alteration of RV function or by altered loading conditions are documented. Analysis of regional RV function demonstrates RV free wall as well as septal perturbations, further characterizing the extent of dysfunction and providing some etiologic information. We conclude that: 1. RV ejection fraction can be measured by the use of an adequate single diastolic ROI; and 2. A simple equilibrium gated technique can provide detailed information about global and regional RV function that should be systematically added to the analysis of the parameters for left-ventricular function. [less ▲]

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See detailEvaluation of risk using serial laboratory data in acute myocardial infarction
Chapelle, Jean-Paul ULg; Albert, Adelin ULg; Heusghem, C. et al

Conference (1981, September)

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See detailEvaluation of ruthenium-based complexes for the controlled radical polymerization of vinyl monomers
Simal, François; Jan, Dominique; Delaude, Lionel ULg et al

in Canadian Journal of Chemistry (2001), 79(5-6), 529-535

New complexes of the type RuCl2(p-cymene)L where the ligand L is either a phosphine or a stable triazolinylidene carbene have been tested and compared to the Grubbs' benzylidene complex RuCl2(=CHPh)(PCy3 ... [more ▼]

New complexes of the type RuCl2(p-cymene)L where the ligand L is either a phosphine or a stable triazolinylidene carbene have been tested and compared to the Grubbs' benzylidene complex RuCl2(=CHPh)(PCy3)(2) as catalyst precursors for the controlled atom transfer radical polymerization (ATRP) of methyl methacrylate and of various para-substituted styrenes. Kinetic data and Hammett rho constants are reported, as well as the X-ray structure of the ortho-metallated triazolinylidene-ruthenium(II) complex RuCl(p-cymene)[1,2-phenylene[3,4-diphenyl-1H-1,2,4-triazol-1-yl-5(4H)-yl idene]]. [less ▲]

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See detailEvaluation of saliva as an alternative matrix for monitoring plasma Zidovudine, Lamivudine and nevirapine concentrations in Rwanda
Gras, A; Schneider, S; Karasi, Jean Claude ULg et al

in Current HIV Research (2011), 9(4), 223-8

Saliva may provide interesting advantages as matrix for compliance measurements, pharmacokinetic studies and therapeutic drug monitoring in resource limited countries. We investigated the feasibility of ... [more ▼]

Saliva may provide interesting advantages as matrix for compliance measurements, pharmacokinetic studies and therapeutic drug monitoring in resource limited countries. We investigated the feasibility of using saliva for compliance monitoring of zidovudine (ZDV), lamivudine (3TC) and nevirapine (NVP) in 29 HIV-1 infected patients from Rwanda. ZDV, 3TC and NVP drug levels were quantified by an LC/MS-MS method in plasma and stimulated saliva samples and compared using Bland-Altman analysis. Seven patients demonstrated undetectable saliva ZDV levels while five out of these seven also showed no 3TC salivary concentrations. For the other samples, we observed a good agreement between salivary and plasma concentrations of each antiretroviral drug. A significant relation between the difference in saliva and plasma ZDV concentrations and the average ZDV concentration in the two matrices was deduced as follow: y = -380.15 + 1.79 x. The log saliva and plasma concentration difference of both 3TC and NVP was consistent across the range of average log concentration. Overall, we showed large agreement limits suggesting a wide inter patient variability that may result to non-reliable plasma level predictions from saliva drug measurements. Therefore, our results indicate that saliva may serve as a valuable tool only for NVP compliance testing because of its high salivary concentration. [less ▲]

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See detailEvaluation of saturation and microcracking of the superficial zone of concrete: new developments
Courard, Luc ULg; Lenaers, Jean-François

in Alexander, M. G.; Beushausen, H.-D.; Dehn, F. (Eds.) et al Concrete Repair, Rehabilitation and Retrofitting II (2009)

Proper surface preparation is essential for the durability of the repaired structure as well as specific saturation level of the concrete. Moreover, the repair material is often blamed for “not sticking” ... [more ▼]

Proper surface preparation is essential for the durability of the repaired structure as well as specific saturation level of the concrete. Moreover, the repair material is often blamed for “not sticking”, but the general source of the trouble lies with the substrate surface conditioning. The extensive research project has been undertaken to develop specifications and performance criteria for surface preparation of concrete substrates, one of the tasks of which was to develop a field test to evaluate the optimum moisture conditioning of the substrate concrete prior to application of repair material. The Autocalm system has been calibrated and compared with destructive and non destructive tests (Schmidt hammer, microscope observations and water absorption) on three types of concrete and two types of surface preparation. In order to evaluate different saturation levels, concrete samples have been stored in more than 12 modes of conservation. [less ▲]

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See detailEvaluation of sedation depth and quality of performed procedures following administration of α2-agonists combined or not with butorphanol in horses.
Barbry, Stephanie; Verwilghen, Denis ULg; Van Galen, Gaby ULg et al

Poster (2008, October)

Several molecules available in equine medicine provide profound sedation and good analgesia when performing diagnostic or surgical procedures. They differ slightly in degree of action, as well in time as ... [more ▼]

Several molecules available in equine medicine provide profound sedation and good analgesia when performing diagnostic or surgical procedures. They differ slightly in degree of action, as well in time as in depth. The aim of this study was to evaluate the depth of sedation and quality of performing a standardized procedure after injection of an 2-agonist alone or associated with butorphanol. Horses presented to the Equine Clinic of Liege University from December 2007 to June 2008 for an endoscopic, dental, radiological or ophthalmological examination of which owner and clinician agreed to include the horse in the study were retained. All horses (n=133) were sedated in a randomized double blind fashion using one of the six following protocols: detomidine (D) (0.01mg/kg IV), romifidine (R) (0.04mg/kg IV), or xylazine (X) (0.5mg/kg IV) alone or associated with butorphanol (B) (0.02mg/kg IV). Stability, head position and the reaction to a stimulus (auditive and visual) were evaluated before the start of the procedure. An overall subjective grade using a 10 cm line scale was given to evaluate sedation depth (ranging from no effect to maximal depth on line) and the quality of the performed procedure (ranging from not realised to ideal examination). For each specific procedure, the same clinician experienced in his particular field evaluated the parameters. Data were related by a variance analysis using SAS system and considered significant if P<0.01. The used protocols significantly influenced both sedation depth and examination quality. Sedation depth increased significantly when B was added in all the three 2-agonists used (mean ± SD): D: 6.46±0.33; D+B: 7.06±0.37; R: 4.93±0.46; R+B: 7.04±0.45; X: 4.94±0.43; X+B: 7.75±0.40. Detomidine provided a significantly better quality of the examination compared to romifidine and xylazine. The addiction of butorphanol significantly decreased the examination quality when added to detomidine and increased the quality when combined with romifidine and xylazine. Mean (± SD) of the quality of performed procedures: D: 8.41±0.54; D+B: 6.06±0.64; R: 6.68±0.71; R+B: 7.16±0.67; X: 4.47±0.67; X+B: 4.52±0.64. Comparison of sedation depth and quality of performed examination revealed an increase in quality of examination scores with increasing depth of sedation until a certain level. As from sedation depths with scores of 8 or more, a decrease in quality of examination was encountered. This report shows the important effect of butorphanol addition on sedation. However, increasing sedation depth was not necessarily linked to a better quality of procedure, notably due to difficulties in handling strongly sedated horses for the procedures performed in this study. [less ▲]

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See detailEvaluation of serum osteocalcin and CTX-I in Ardenner horses with special reference to juvenile interphalangeal joint disease.
Pastoret, V.; Carstanjen, B.; Lejeune, Jean-Luc ULg et al

in Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine (2007), 54(9), 458-63

The first aim of this study was to establish a profile of age-related normal serum concentrations of osteocalcin (OC) in Ardenner horses. For this first part, blood samples from 49 healthy Ardenner horses ... [more ▼]

The first aim of this study was to establish a profile of age-related normal serum concentrations of osteocalcin (OC) in Ardenner horses. For this first part, blood samples from 49 healthy Ardenner horses were collected. The second aim was to study two biochemical markers of bone metabolism, OC and a carboxy-terminal cross-linking telopeptide of type I collagen (CTX-I), in 30 young Ardenner horses during 1 year. Amongst them, 17 showed lesions of juvenile degenerative joint disease in the distal forelimbs. A specific radioimmunoassay for equine OC was used to measure the serum concentration of the marker. The serum concentration of CTX-I was measured using a commercially available human assay validated for use in the horse. The effect of age, sex, season and health status (with or without lesions) was assessed. Levels of OC fall between birth and the adult stage: this decrease being most marked between birth and 1 year of age. This age-related decrease of OC was confirmed in the 30 young Ardenner horses, but CTX-I levels remained constant in this group. The Levels of the two markers changed significantly with the season with higher concentrations during the winter. No significant difference was shown either between the two sexes or between the two health statuses. [less ▲]

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See detailEvaluation of SFC interest for the determination of cholecalciferol and its impurities in pharmaceuticals
Andri, Bertyl ULg; Dispas, Amandine ULg; Klinkenberg, Régis et al

Poster (2014, June 23)

Detailed reference viewed: 33 (3 ULg)
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See detailEvaluation of shear stress required to move pebbles : flume experiments and observations in natural streams
Petit, François ULg

in Abstracts 2nd international Conference on Geomorphology Francfort (1989)

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See detailEvaluation of Shielding Effectiveness in the Time Domain using a DG Method with an Efficient PML
Modave, Axel ULg; Geuzaine, Christophe ULg; Boubekeur, Mohamed et al

Poster (2013, April 24)

Development of new electric and electronic devices leads to an increasing importance for solving electromagnetic compatibility problems. In particular, the optimization of radiated emissions is ... [more ▼]

Development of new electric and electronic devices leads to an increasing importance for solving electromagnetic compatibility problems. In particular, the optimization of radiated emissions is increasingly done through numerical modeling. In this context, numerical methods allow to evaluate the effectiveness of more and more elaborate shielding enclosures. We propose an application of the nodal Discontinuous Galerkin method to evaluate the effectiveness of composite shieldings in the time domain. This numerical method provides convenient advantages to deal with shielding problems. Firstly, heterogeneous media are naturally included in the discrete formulation. After, the method is famous to allow a massive parallelization for the numerical resolution. Finally, a resolution in the time domain allows to consider transient signals. The numerical scheme is firstly validated using an academic benchmark. In the same way, the PML used to truncate the computational domain is optimized and validated. Applications are then presented for homogeneous and composite shieldings. The preliminary results are in conformity with classical predictive rules. [less ▲]

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See detailEvaluation of shielding effectiveness of composite wall with a time domain discontinuous Galerkin method
Kameni, Abelin; Modave, Axel ULg; Boubekeur, Mohamed et al

in European Physical Journal : Applied physics (2013), 64(2), 24508

This article presents a Time Domain Discontinuous Galerkin method applied for solving the conservative form of Maxwell equations and computing the radiated fields in electromagnetic compatibility problems ... [more ▼]

This article presents a Time Domain Discontinuous Galerkin method applied for solving the conservative form of Maxwell equations and computing the radiated fields in electromagnetic compatibility problems. The results obtained in homogenous media for the transverse magnetic waves are validated in two cases. We compare our solution to an analytical solution of Maxwell’s equations based on characteristic method. Our results on shielding effectiveness of a conducting wall are same as those obtained from analytical expression in frequency domain. The propagation in heterogeneous medium is explored. The shielding effectiveness of a composite wall partially filled by circular conductives inclusions is computed. The proposed results are in conformity with the classical predictive homogenizations rules. [less ▲]

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See detailEvaluation of silicon stocks and uptake in five forest stands on an acid brown soil
Cornelis, Jean-Thomas ULg; Ranger, Jacques; Iserentant, Anne et al

Conference (2008)

Detailed reference viewed: 4 (0 ULg)