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Peer Reviewed
See detailApplication of near infrared reflectance spectroscopy (NIRS) for predicting chemical composition, cellulase digestiblity of organic matter and energy values of compound feedstuffs for ruminants.
Verheggen, S.; Dardenne, Pierre; Thewis, André ULg et al

in Biston, Robert; Barthiaux-Thill, Nicole (Eds.) Proceedings of the Third International Conference on Near Infrared Spectroscopy, vol.1 (1990)

Detailed reference viewed: 41 (6 ULg)
Peer Reviewed
See detailApplication of neural networks in quality control of 'Jonagold' apples
Leemans, Vincent ULg; Bieuvelet, Frédéric; Destain, Marie-France ULg

in Bellon-Maurel, Véronique (Ed.) Sensoral 98 - International workshop on sensing quality of agricultural products (1998, February)

This paper studies the possibilities to grade the 'Jonagold', a bicolour apple, using neural networks and Fisher"s linear discriminant analysis. In a first step the pixels are sorted into three areas, the ... [more ▼]

This paper studies the possibilities to grade the 'Jonagold', a bicolour apple, using neural networks and Fisher"s linear discriminant analysis. In a first step the pixels are sorted into three areas, the blush colour area, the intermediate colour area and the ground colour area; the accuracy reached 95% with the neural networks. Int the second step the fruit are graded into four categories on their ground colour basis; the accuracy reached 68%whatever the method used. It si also shown that there is no need to separate the ground colour and the intermediate colour to compute the ground colour classification parameters. [less ▲]

Detailed reference viewed: 45 (3 ULg)
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See detailApplication of new Eurocode 3 formulae for beam-columns to class 3 hollow section members
Boissonnade, Nicolas; Weynand, K.; Jaspart, Jean-Pierre ULg

in Proceedings of the 12th International Symposium on Tubular Structures (2008)

Detailed reference viewed: 42 (6 ULg)
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See detailApplication of new methodologies based on design of experiments, independent component analysis and design space for robust optimization in liquid chromatography
Debrus, Benjamin ULg; Lebrun, Pierre ULg; Ceccato, Attilio ULg et al

in Analytica Chimica Acta (2011), 691

HPLC separations of an unknown sample mixture and a pharmaceutical formulation have been optimized using a recently developed chemometric methodology proposed by W. Dewé et al. in 2004 and improved by P ... [more ▼]

HPLC separations of an unknown sample mixture and a pharmaceutical formulation have been optimized using a recently developed chemometric methodology proposed by W. Dewé et al. in 2004 and improved by P. Lebrun et al. in 2008. This methodology is based on experimental designs which are used to model retention times of compounds of interest. Then, the prediction accuracy and the optimal separation robustness, including the uncertainty study, were evaluated. Finally, the design space (ICH Q8(R2) guideline) was computed as the probability for a criterion to lie in a selected range of acceptance. Furthermore, the chromatograms were automatically read. Peak detection and peak matching were carried out with a previously developed methodology using independent component analysis published by B. Debrus et al. in 2009. The present successful applications strengthen the high potential of these methodologies for the automated development of chromatographic methods. [less ▲]

Detailed reference viewed: 160 (43 ULg)
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See detailApplication of next generation sequencing for study and diagnosis of plant viral diseases in agriculture
van der Vlugt, René; Minafra, Angelanotio; Olmos, Antonio et al

Poster (2015, August)

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See detailApplication of NIR hyperspectral imaging combined to chemometrics to assess the impact of tillage on the root system development of a winter wheat crop
Fraipont, Guillaume ULg; Eylenbosch, Damien ULg; Baeten, Vincent et al

Poster (2016, July)

This poster presents de results of a study of the influence of tillage on the root development of a winter wheat crop. The originality of this research lies in the application of an innovative root ... [more ▼]

This poster presents de results of a study of the influence of tillage on the root development of a winter wheat crop. The originality of this research lies in the application of an innovative root quantification method based on the near infrared hyperspectral imaging. [less ▲]

Detailed reference viewed: 21 (6 ULg)
See detailApplication of NMR to Identification of Metabolites
Frederich, Michel ULg

Scientific conference (2006, April 07)

Detailed reference viewed: 9 (4 ULg)
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See detailApplication of non-stationary iterative methods to an exact Newton-Raphson solution process for power flow equations
Bacher, Rainer; Bullinger, Eric ULg

in 12th Power Systems Computation Conference (1996)

AC power flow problems are usually solved by the Newton-Raphson solution method. The main step is the linearization of the nonlinear power flow equations and the subsequent solution of this linear system ... [more ▼]

AC power flow problems are usually solved by the Newton-Raphson solution method. The main step is the linearization of the nonlinear power flow equations and the subsequent solution of this linear system. The characteristics of this linear system of equations vary for different power flow implementations; symmetric/unsymmetric, positive definite/indefinite system matrices can result. Based on these characteristics, different direct and iterative linear system solvers can be used to maximize performance and solution robustness. In this paper, results are given of nonstationary iterative methods for unsymmetric, indefinite linear systems derived from power flow equations [less ▲]

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See detailApplication of nuclear scintigraphy to evaluation of pulmonary function
Votion, Dominique ULg

in In Proceedings: 17th Comparative Respiratory Society Meeting (1999, October)

Nuclear imaging techniques have a long history in pulmonary medicine and the clinical and experimental uses of lung scintigraphy have largely expanded these last years. Currently, the pulmonary ... [more ▼]

Nuclear imaging techniques have a long history in pulmonary medicine and the clinical and experimental uses of lung scintigraphy have largely expanded these last years. Currently, the pulmonary applications of nuclear scintigraphy are essentially: (I), the study of regional lung function; (II), the imaging of pulmonary infection and/or inflammation; (III), the determination of inflammatory cells involvement in lung diseases; (IV), the assessment of the alveolar-capillary barrier integrity; (V), the imaging of lung cancers and (VI), the study of aerosol deposition within the lung. Many faculty of veterinary medicine have acquired nuclear imaging facilities. The primary application of scintigraphy is in the investigation of equine orthopaedic conditions and, with the exception of rodents, only a few publications report the use of lung scintigraphy in any animal species. Nevertheless, lung scintigraphy using animals would be of great interest to better understand the lung physiology in general as well as animals’ peculiarities in particular. Following a brief introduction to the technique, this paper will review the main applications of pulmonary scintigraphy and will survey some new nuclear imaging techniques that should be available in the next future. [less ▲]

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See detailApplication of PIXE and PIGE under variable ion beam incident angle to several fields of archaeometry
Weber, Georges ULg; Martinot, L.; Strivay, David ULg et al

in X-Ray Spectrometry [=XRS] (2005), 34(4, JUL-AUG), 297-300

For several years, the specific features of PIXE and PIGE have made them very attractive in the field of archaeometry. Among them, non-destructivity is one of the most important. The possibility of ... [more ▼]

For several years, the specific features of PIXE and PIGE have made them very attractive in the field of archaeometry. Among them, non-destructivity is one of the most important. The possibility of working under atmospheric pressure is also important because of the very different shapes and sizes of the artefacts concerned. However, these ion beam techniques suffer from the same disadvantage: the information coming from x-rays or),brays produced at different places along the charged particle path is integrated. That prevents one from taking into account the possible element concentration gradients due to multilayered systems or diffusion processes. This paper presents several applications of PIXE and PIGE applied under variable ion beam incident angle. PIGE has been mainly used for studying ancient glass items or glass windows in order to detect or evaluate the glass corrosion process. The examples given for PIGE deal with Roman and Merovingian glass objects and cathedral glass windows and PIXE applications concern studies for resolving the multilayered structure of easel paintings. The set-up allowing one to perform the measurements should be very stable, the rotation axis should pass through the beam axis and the detector should follow the sample movement. Copyright (c) 2005 John Wiley [less ▲]

Detailed reference viewed: 35 (4 ULg)
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See detailApplication of radio tracking to the survey of wild populations of vertebrate species (Mammals, birds, fish) in Belgium
Kalpers, José; Palata, Kabudi; Clotuche, Emile et al

in Amlaner C. J. jr (Ed.) Proceedings of the Tenth international symposium on biotelemetry (1989)

The authors are maily concerned with behavioral ecology of wildlife animals. The activity of the laboratory was mainly focused on: i/a wild mustelid, stone marten (Martes foina) in a suburban ... [more ▼]

The authors are maily concerned with behavioral ecology of wildlife animals. The activity of the laboratory was mainly focused on: i/a wild mustelid, stone marten (Martes foina) in a suburban environnement ii/ a large game mammal, the wild boar (Sus scrola), in order to collect basic information needed in management operations iii/ the red fox (Vulpes vulpes) ecology in order to compare the behavior of normal and rabid animals iv/and an endangered bird species (black grouse, Tetrao t. tetrix) and his pattern of land (heather) use after a fire. All tracking studies were conducted in wooded areas of the souther part of Belgium from 1976 to 1984. The results are discussed in relation to factors modulating time and space utilization. Recently, our laboratory has been developing research programs on ecoethology and habitat partitionning of freshwater fish in the river Meuse basin. First results of a feasibility study of tracking experiments on the barbel (Barbus barbus, Cyprinidae) are also presented [less ▲]

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See detailApplication Of Radiometric And Isotope Dilution-Mass Spectrometric Techniques To The Certification Of Edible Oil And Fat Reference Materials
Marlier, M.; Lognay, Georges ULg; Wagstaffe, J. et al

in Fresenius Journal of Analytical Chemistry (1990), 338(4), 419-422

A method for the isotope dilution-mass spectrometric (ID-MS) determination of butyric acid C4 in butter fat (RM164) was developed in order to support the data gathered from nine experienced European ... [more ▼]

A method for the isotope dilution-mass spectrometric (ID-MS) determination of butyric acid C4 in butter fat (RM164) was developed in order to support the data gathered from nine experienced European laboratories within the final certification exercise. The ID-MS results (3,46 _+ 0,06 g C4/100 g fat) were in very good agreement with those obtained by "classical" GLC and HPLC techniques. (RM164 was finally certified at 3,49 + 0,06 g C4/100 g fat). This paper reports briefly on a previous preliminary study undertaken to validate a procedure (agreed by the BCRsterol group) for the isolation of the sterol from fats and oils. By use of labelled sterols and radiometric measurements it was shown that sterol recoveries were superior to 96%. [less ▲]

Detailed reference viewed: 28 (0 ULg)
Peer Reviewed
See detailApplication of radiometric techniques by the study of dexamethasone extraction from bovine serum
Verheggen, S.; Lognay, Georges ULg; Dreze, Philippe et al

in Int. Symp. of the analysis of anabolizing and doping agents in biosamples (1988)

Detailed reference viewed: 7 (1 ULg)
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See detailApplication of Raman spectroscopy to forensic fibre cases
Lepot, Laurent ULg; Gilbert, Bernard ULg; De Wael, Kris et al

in Science & Justice : Journal of the Forensic Science Society (2008), 48(3), 109-117

Five forensic fibre cases in which Raman spectroscopy proved to be a good confirmatory method for microspectrophotometry (MSP) are described. Absorption spectra in the visible range are indeed sometimes ... [more ▼]

Five forensic fibre cases in which Raman spectroscopy proved to be a good confirmatory method for microspectrophotometry (MSP) are described. Absorption spectra in the visible range are indeed sometimes characteristic of a certain dye but this one can be subsequently identified unambiguously by Raman spectroscopy using a spectral library. In other cases the comparison of Raman spectra of reference fibres and suspect fibres led to an improvement of the discrimination power. The Raman measurements have been performed directly on mounted fibres and the spectra showed only little interference from the mounting resin and glass. Raman spectroscopy is therefore a powerful method that can be applied in routine fibre analysis following optical microscopy and MSP measurements. [less ▲]

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See detailApplication of random eigenvalue analysis to assess bridge flutter probability
Canor, Thomas; Caracoglia, Luca; Denoël, Vincent ULg

in Journal of Wind Engineering and Industrial Aerodynamics (2015), 140(0), 79--86

Abstract This study examines the well-known issue of evaluating the flutter probability for a long-span bridge, necessary for assessing structural integrity and reliability. The motivation stems from the ... [more ▼]

Abstract This study examines the well-known issue of evaluating the flutter probability for a long-span bridge, necessary for assessing structural integrity and reliability. The motivation stems from the need for critically reviewing and investigating a number of existing numerical approaches (e.g., random perturbation analysis, collocation methods, Galerkin approach) for the modeling and the solution of stochastic dynamic problems, by adapting them to the specific problem. The study proposes a generalized formulation for stochastic bridge flutter in terms of random eigenvalue analysis. A 1200 m suspension bridge model is used in the numerical simulations to compare the various methods and to provide indications on advantages and limitations of each method. Moreover, the link between the proposed formulation and existing studies on the propagation of uncertainty in aeroelastic systems, for example associated with measurement errors in wind tunnel, is examined. [less ▲]

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See detailApplication of RAP-PCR and cDNA-AFLP to isolate genes of Candida oleophila (strain O) induced by the presence of galacturonic acid.
Massart, Sébastien ULg; Sens-Espel, Roser; Lepoivre, Philippe ULg et al

in Bulletin OILB/SROP = IOBC/WPRS Bulletin (2002), 25(10), 399-402

Detailed reference viewed: 60 (1 ULg)
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See detailApplication of real-time voltage security assessment to the Hellenic Interconnected System
Van Cutsem, Thierry ULg; Kabouris, John; Christoforidis, George et al

in IEE Proceedings-Generation Transmission and Distribution (2005), 152(1), 123-131

The online voltage security assessment methods implemented at the national control centre of the Hellenic Interconnected System, within the framework of the OMASES project funded by the European Union are ... [more ▼]

The online voltage security assessment methods implemented at the national control centre of the Hellenic Interconnected System, within the framework of the OMASES project funded by the European Union are described. The heart of all computations is a fast time-domain method. Security is analysed with respect to power transfers in critical corridors or power consumption in load areas. Results take on the form of either precontingency secure operation limits, or postcontingency loadability limits, together with various diagnosis tips. Contingency filtering is performed to meet the real-time requirement. Typical results obtained during the test phase of the project are reported. [less ▲]

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See detailApplication of recombinant sucrose synthase large scale synthesis of ADP-glucose
Zervosen, Astrid ULg; Romer, Ulrike; Elling, Lothar

in Journal of Molecular Catalysis B : Enzymatic (1998), 5(1-4), 25-28

Abstract The synthesis of ADP-glucose with recombinant sucrose synthase from potato was combined with the synthesis of ADP from AMP and ATP catalysed by myokinase from rabbit muscle. By using the ... [more ▼]

Abstract The synthesis of ADP-glucose with recombinant sucrose synthase from potato was combined with the synthesis of ADP from AMP and ATP catalysed by myokinase from rabbit muscle. By using the repetitive-batch-technique we were able to reach enzyme productivities (mg ADP-glucose/U enzyme) of 28 mg/U sucrose synthase and 140 mg/U myokinase yielding 2.8 g ADP-glucose (55% yield). After product isolation, 2.2 g ADP-glucose was obtained corresponding to 44% overall yield. [less ▲]

Detailed reference viewed: 51 (5 ULg)