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See detailEvaluation of preoperative use of danazol, gestrinone, lynestrenol, buserelin spray and buserelin implant, in the treatment of endometriosis associated infertility.
Donnez, Jacques; NISOLLE, Michelle ULg; Clerckx, Françoise et al

in Progress in Clinical & Biological Research (1990), 323

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See detailEvaluation of prevalence of osteoporosis and osteopenia in men presenting at multiple risk detection campaign
Hanssens, L. C.; De Ceulaer, F.; Tancredi, Annalisa ULg et al

in Osteoporosis International (2004, May), 15(Suppl.1), 54

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See detailEvaluation of prevalence of osteoporosis and osteopenia in men presenting at multiple risk detection campaign
Hanssens, L.; De Ceulaer, F.; Tancredi, Annalisa ULg et al

in Osteoporosis International (2003, November), 14(Suppl. 7), 90

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See detailEvaluation of primary brain tumors with F-TYR and FDG PET : correlation with pathology and survival.
LOVINFOSSE, Pierre ULg; BORN, J.; MARTIN, Didier ULg et al

in Journal of Nuclear Medicine (The) (2008), 49(SUPPL), 77

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See detailEvaluation of process-driven spray retention model on ear-ly growth stage barley
Massinon, Mathieu ULg; Ouled Taleb Salah, Sofiene ULg; De Cock, Nicolas ULg et al

Conference (2014, July)

The efficiency of spray application of foliar plant protection products with hydraulic nozzles on vertically oriented and hydrophobic plants at early growth stages can be very low. The spray retention by ... [more ▼]

The efficiency of spray application of foliar plant protection products with hydraulic nozzles on vertically oriented and hydrophobic plants at early growth stages can be very low. The spray retention by crop leaves is affected by application parameters resulting from nozzle kind, size and operating pressure as well as spray mixture physicochemical properties. When optimizing the spray application, such targets are often used to perform retention trials for comparative purpose, i.e. indoor grown monocotyledonous at two leaves stage. A typical arrangement consists in spraying few plants sufficiently spaced underneath the nozzle to avoid interference due to secondary droplets from impacts on other plants. However, retention trials turn out to ineffective for significantly discriminating between application methods and mixtures due to the high variability between trials resulting from the different droplets retained by each plant. An alternative to retention trials is to tackle spray retention with a physical approach at the droplet scale. Such tests are often performed using high speed imaging with high magnification optics to characterize droplet impacts; adhesion, rebound or shatter on small excised leaf areas and neglect, however, the overall plant architecture. The aim of this paper is to evaluate a droplet interception model connecting actual spray retention with process-driven retention models. In this study, barley plants (BBCH11) were sprayed with 2 formulations using the same nozzle. The actual spray retention was assessed by dosing a fluorescent tracer added to the sprayed mixture. The plants were placed linearly below the center of a single moving nozzle during sprayings. Each plant was reconstructed in 3D afterwards using a structured light 3D scanner and used as input for the model. A virtual nozzle was built on the base of droplet size distributions measured with high speed shadow imaging by performing an adjustment of the distribution by the method of moments. A ran-dom droplet distribution was allocated for each spraying of a barley plant. Droplet velocities were given to droplets on the basis of the droplet velocity – diameter correlation by resolving the droplet transport equations for different droplet sizes. Initial droplet positions were ran-domly given. The interception model is based on a mathematical formalism for the intercep-tion between triangles of the 3D plant and droplet directions. If the droplet impacts a leaf, the amount actually retained by the leaf was computed on the basis of the droplet impact energy and impact behavior from experiments with high speed shadow imaging. In conclusion, the interception model allowed determining the spray retention by plants and discriminating ap-plication parameters by explaining the variability resulting from various droplet size distribu-tions intercepted by single plant. [less ▲]

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See detailEvaluation of proposals of Belgian Social Security Institute for reimbursement of bone densitometry tests. Toward a cost-effective strategy for osteoporosis screening?
Ben Sedrine, Wafa ULg; Ethgen, Olivier ULg; Devogelaer, Jean-Pierre et al

in Aging Clinical & Experimental Research (2004), 16(5), 413-419

BACKGROUND AND AIMS: The Belgian Social Security Institute (hereafter INAMI) proposes a list of conditions to be considered as a prerequisite for reimbursement of Bone Mineral Density (BMD) measurements ... [more ▼]

BACKGROUND AND AIMS: The Belgian Social Security Institute (hereafter INAMI) proposes a list of conditions to be considered as a prerequisite for reimbursement of Bone Mineral Density (BMD) measurements. The aim of this paper was to evaluate the diagnostic accuracy of the proposed criteria for identifying osteoporosis, and to gauge how useful they are for more rational application of densitometry tests. METHODS: 3748 Caucasian women aged at least 50 years old were recruited consecutively from an outpatient university center, from the database of which all relevant data corresponding to the INAMI list of clinical factors, as well as patients' age, weight and height, were collected. BMD measurements using dual X-ray absorptiometry were reported at the spine and hip regions. Diagnostic accuracy was evaluated through measures of sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV). Additionally, from ROC analysis, benchmark values for age and body mass index were identified and then, used alone and in combination with the INAMI test, were applied to define various screening strategies. For each of them, associated costs per osteoporotic patient detected were estimated. Cost estimates refer only to the costs associated with the densitometric procedure from the perspective of the reimbursement health authorities. RESULTS: Applying INAMI criteria for detecting osteoporosis at any of the considered sites yielded sensitivity of 68.9%, specificity of 50.7%, PPV of 42.9% and NPV of 57.3%. Comparison of incremental costs per patient of the different strategies revealed that, with 67.1 Euros, the option of opening BMD coverage to women on the basis of the INAMI conditions would be more cost-effective than mass screening (90.1 Euros) or applying the age criterion alone (70.2 Euros). However, the BMI condition seems to act as a better indicator of risk than the INAMI criteria in those meeting the age condition (35.4 Euros). CONCLUSIONS: The accuracy of the INAMI proposal turns out to be quite unsatisfactory, and did not adequately cover the population at risk of osteoporosis. From a resource allocation perspective, the best strategy by far would be to recommend using concomitantly INAMI, age and BMI-selective criteria. Some adaptations could enhance the usefulness of the INAMI proposals as a selective approach for BMD referral and reimbursement. [less ▲]

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

Poster (2002, March 02)

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

in Fundamental & Clinical Pharmacology (2002)

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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 ▲]

Detailed reference viewed: 49 (8 ULg)