Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
See detailApplication of a novel oscillatory flow screening micro-reactor to a biotransformation in a two-phase medium
Vicente, A.; Reis, N.; Nobre, C. et al

in Biochemical engineering : frontiers and advances in biotechnology, biological and biomolecular engineering : abstracts”. [S.n. : s.l.] (2005, June)

Detailed reference viewed: 11 (0 ULg)
Full Text
Peer Reviewed
See detailApplication of a SEEK filter to a 1D biogeochemical model of the Ligurian Sea: Twin experiments and real in-situ data assimilation
Raick, Caroline ULg; Alvera Azcarate, Aïda ULg; Barth, Alexander ULg et al

in Journal of Marine Systems (2007), 65(1-4), 561-583

The Singular Evolutive Extended Kalman (SEEK) filter has been implemented to assimilate in-situ data in a 1D coupled physical-ecosystem model of the Ligurian Sea. The biogeochemical model describes the ... [more ▼]

The Singular Evolutive Extended Kalman (SEEK) filter has been implemented to assimilate in-situ data in a 1D coupled physical-ecosystem model of the Ligurian Sea. The biogeochemical model describes the partly decoupled nitrogen and carbon cycles of the pelagic food web. The GHER hydrodynamic model (1D version) is used to represent the physical forcings. The data assimilation scheme (SEEK filter) parameterizes the error statistics by means of a set of empirical orthogonal functions (EOFs). Twin experiments are first performed with the aim to choose the suitable experimental protocol (observation and estimation vectors, number of EOFs, frequency of the assimilation,...) and to assess the SEEK filter performances. This protocol is then applied to perform real data assimilation experiments using the DYFAMED data base. By assimilating phytoplankton observations, the method has allowed to improve not only the representation of the phytoplankton community, but also of other variables such as zooplankton and bacteria that evolve with model dynamics and that are not corrected by the data assimilation scheme. The validation of the assimilation method and the improvement of model results are studied by means of suitable error measurements. (c) 2006 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 611 (19 ULg)
Peer Reviewed
See detailApplication of a sequential data assimilation technique to improve the results of a 1D couled physical-biogeochemical model of the Ligurian Sea
Raick, C.; Soetaert, K.; Grégoire, Marilaure ULg

in VLIZ Young Scientists' Day, Brugge, Belgium 25th February 2005: book of abstracts (2005)

Detailed reference viewed: 18 (0 ULg)
Full Text
Peer Reviewed
See detailApplication Of A Simplified Molecular Protocol To Reveal Mixed Infections With Begomoviruses In Cassava
Busogoro, Jp.; Masquellier, L.; Kummert, J. et al

in Journal of Phytopathology (2008), 156(7-8), 452-457

Detailed reference viewed: 19 (5 ULg)
Full Text
Peer Reviewed
See detailApplication of a standardisation procedure on an international network of MIR instruments for milk analysis
Grelet, Clément ULg; Fernandez Pierna, Juan A.; Dardenne, Pierre et al

Poster (2016, January)

Detailed reference viewed: 12 (1 ULg)
Peer Reviewed
See detailApplication of a three-dimensional inverse method to the design of a centrifugal compressor impeller
Demeulenaere, Alain; Léonard, Olivier ULg; Van den Braembussche, Rene

in Proceedings of the ASME Turbo Expo 1998 (1998, June)

ASME Paper 98-GT-127

Detailed reference viewed: 40 (1 ULg)
Full Text
Peer Reviewed
See detailApplication of a three-field natural neighbour method in elastoplasticity
Li, Xiang; Cescotto, Serge ULg; Duchene, Laurent ULg

in Proceedings of the 8th World Congress on Computational Mechanics (WCCM8) (2008)

The natural neighbour method can be considered as one of the many variants of the meshless methods. Classically, the development of these methods is based on the virtual work principle: a set of nodes are ... [more ▼]

The natural neighbour method can be considered as one of the many variants of the meshless methods. Classically, the development of these methods is based on the virtual work principle: a set of nodes are distributed over the domain to be studied and the displacement field is discretized with the help of interpolation functions that are not based on the finite element concept but only based on the nodes. In the present paper, we use a new approach based on the Fraeijs de Veubeke (FdV) functional [1] and initially developed for linear elasticity [2]. It uses separate discretizations of the displacements, stresses and strains. The method of [2] is extended to the case of geometrically linear but materially non linear solids and it is shown that, in the absence of body forces, the calculation of integrals over the area of the domain is avoided and that the derivatives of the nodal shape functions are not required, which constitutes an advantage over classical meshless and finite elements methods. [less ▲]

Detailed reference viewed: 20 (2 ULg)
Peer Reviewed
See detailApplication of a two-level state estimation for anomalous data analysis in electric power systems
Van Cutsem, Thierry ULg; Horward, J-L; Ribbens-Pavella, Mania

in Proc. IFAC Symposium on Automatic Control in Power Generation, Distribution and Protection (1980)

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailApplication of an Advanced GTN Model
Fansi, Joseph; Habraken, Anne ULg; Balan, Tudor et al

Conference (2012)

The present contribution consists of implementing an advanced GTN damage model as a "User Material subroutine" in the Abaqus FE code. This damage model is based on specific nucleation and growth laws.This ... [more ▼]

The present contribution consists of implementing an advanced GTN damage model as a "User Material subroutine" in the Abaqus FE code. This damage model is based on specific nucleation and growth laws.This model is applied to the prediction of the damage evolution and the stress state in notched specimens made of dual phase steel. By comparing numerical predictions with experimental results based on high-resolution X-ray absorption tomography, the numericalapproach was improved and validated [less ▲]

Detailed reference viewed: 71 (20 ULg)
Full Text
Peer Reviewed
See detailApplication of an advanced transient stability assessment and control method to a realistic power system
Cirio, D.; Lucarella, D.; Vimercati, G. et al

in Proceedings of the 15th Power System Computation Conference (PSCC 2005) (2005)

The paper presents a technical overview of a large research project on Dynamic Security Assessment (DSA) supported by EU. Transient Stability Assessment and Control, which was one of the main goals of the ... [more ▼]

The paper presents a technical overview of a large research project on Dynamic Security Assessment (DSA) supported by EU. Transient Stability Assessment and Control, which was one of the main goals of the project, is taken into consideration by presenting the fundamental theoretical methodology and possible applications. A specific prototype installation for a realistic power system is then reported by presenting and commenting some of the obtained results. [less ▲]

Detailed reference viewed: 59 (1 ULg)
Peer Reviewed
See detailApplication of an electromagnetic modeling method for railway grounding systems subjected to lightning strikes
Jacqmaer, P.; Geuzaine, Christophe ULg; Driesen, J.

in 13th International Conference on Harmonics and Quality of Power (ICHQP XIII) (2008)

Detailed reference viewed: 11 (1 ULg)
Full Text
Peer Reviewed
See detailApplication of an ensemble Kalman Filter to a 1D coupled physical-biological model of the Ligurian sea
Lenartz, Fabian ULg; Raick, Caroline ULg; Soetaert, Karline et al

in Journal of Marine Systems (2007), 67

The Ensemble Kalman filter (EnKF) has been applied to a 1-D complex ecosystem model coupled with a hydrodynamic model of the Ligurian Sea. In order to improve the performance of the EnKF, an ensemble ... [more ▼]

The Ensemble Kalman filter (EnKF) has been applied to a 1-D complex ecosystem model coupled with a hydrodynamic model of the Ligurian Sea. In order to improve the performance of the EnKF, an ensemble subsampling strategy has been used to better represent the covariance matrices and a pre-analysis step for correcting the non-normality of the members distribution has been implemented. Twin experiments have been realized to assess the performance of the developed tool and a real data assimilation experiment has been conducted to hindcast the ecosystem at the Dyfamed site during the year 2000. Finally the performance of the EnKF has been compared with a Singular Evolutive Extended Kalman (SEEK) filter with a fixed basis. We conclude that, on one hand, there is a benefit in using the subsampling strategy and the lognormal transformation with the EnKF, and on the other hand, this filter presents better performance than the fixed basis version of the SEEK filter. However, it also incurs a large computational cost. [less ▲]

Detailed reference viewed: 95 (16 ULg)
Peer Reviewed
See detailApplication of an enzyme-linked immunosorbent assay (ELISA) involving monoclonal antibody for detection of BLV antibodies in individual or pooled bovine milk samples
Mammerickx, Marc; Portetelle, Daniel ULg; Burny, Arsène

in Zentralblatt für Veterinarmedizin. Reihe B = Journal of Veterinary Medicine. Series B (1985), 32

Detailed reference viewed: 15 (0 ULg)
Full Text
Peer Reviewed
See detailAPPLICATION OF AN INNOVATIVE DESIGN SPACE OPTIMIZATION STRATEGY TO THE DEVELOPMENT OF LC METHODS TO COMBAT POTENTIALLY COUNTERFEIT NONSTEROIDAL ANTIINFLAMMATORY DRUGS
Mbinze Kindenge, Jérémie ULg; Lebrun, Pierre ULg; Debrus, Benjamin ULg et al

in Journal of Chromatography. A (2012), 1263

In the context of the battle against counterfeit medicines, an innovative methodology has been used to develop rapid and specific high performance liquid chromatographic methods to detect and determine 18 ... [more ▼]

In the context of the battle against counterfeit medicines, an innovative methodology has been used to develop rapid and specific high performance liquid chromatographic methods to detect and determine 18 non-steroidal anti-inflammatory drugs, 5 pharmaceutical conservatives, paracetamol, chlorzoxazone, caffeine and salicylic acid. These molecules are commonly encountered alone or in combination on the market. Regrettably, a significant proportion of these consumed medicines are counterfeit or substandard, with a strong negative impact in countries of Central Africa. In this context, an innovative design space optimization strategy was successfully applied to the development of LC screening methods allowing the detection of substandard or counterfeit medicines. Using the results of a unique experimental design, the design spaces of 5 potentially relevant HPLC methods have been developed, and transferred to an ultra high performance liquid chromatographic system to evaluate the robustness of the predicted DS while providing rapid methods of analysis. Moreover, one of the methods has been fully validated using the accuracy profile as decision tool, and was then used for the quantitative determination of three active ingredients and one impurity in a common and widely used pharmaceutical formulation. The method was applied to 5 pharmaceuticals sold in the Democratic Republic of Congo. None of these pharmaceuticals was found compliant to the European Medicines Agency specifications [less ▲]

Detailed reference viewed: 190 (29 ULg)
Full Text
Peer Reviewed
See detailApplication of an innovative design space optimization strategy to thedevelopment of LC methods for the simultaneous screening of antibiotics to combat poor quality medicines
Mbinze Kindenge, Jérémie ULg; Dispas, Amandine ULg; Lebrun, Pierre ULg et al

in Journal of Pharmaceutical & Biomedical Analysis (2013), 85

The poor quality of medicines is a crucial problem of public health. Therefore, it is important to haveanalytical tools to attend decisions of the legal authorities while combating this offense. In this ... [more ▼]

The poor quality of medicines is a crucial problem of public health. Therefore, it is important to haveanalytical tools to attend decisions of the legal authorities while combating this offense. In this context,the main objective of this study was to develop generic methods able to trace, screen and determineseveral antibiotics and common associated molecules by mean of liquid chromatographic techniques.For that purpose, an innovative Design Space optimization strategy was applied, targeting 16 antibioticsand 3 beta-lactamase inhibitors. The robustness of the developed method allowed using its use in anenvironment where operational factors such as temperature are not easy to control and eased its trans-fer to Ultra High Performance Liquid Chromatography. To demonstrate its ability to quantify the targetedmolecules, the developed and transferred method was fully validated for two active ingredients com-monly used in association, sulbactam and ceftriaxone, using the accuracy profile as decision tool. Basedon this successful step, the method was then used for the quantitative determination of these two activeingredients in three pharmaceutical brands marketed in the Democratic Republic of Congo. Two out ofthe three pharmaceutical products did not comply with the specifications [less ▲]

Detailed reference viewed: 91 (30 ULg)
Full Text
Peer Reviewed
See detailApplication of ARMAV models to identification and damage detection of mechanical and civil engineering structures
Bodeux, Jean-Bernard; Golinval, Jean-Claude ULg

in Smart Materials & Structures (2001), 10(3), 479-489

In this paper, the application of auto-regressive moving average vector models to system identification and damage detection is investigated. These parametric models have already been applied for the ... [more ▼]

In this paper, the application of auto-regressive moving average vector models to system identification and damage detection is investigated. These parametric models have already been applied for the analysis of multiple input-output systems under ambient excitation. Their main advantage consists in the capability of extracting modal parameters from the recorded time signals, without the requirement of excitation measurement. The excitation is supposed to be a stationary Gaussian white noise. The method also allows the estimation of modal parameter uncertainties. On the basis of these uncertainties, a statistically based damage detection scheme is performed and it becomes possible to assess whether changes of modal parameters are caused by, e.g. some damage or simply by estimation inaccuracies. The paper reports first an example of identification and damage detection applied to a simulated system under random excitation. The `Steel-Quake' benchmark proposed in the framework of COST Action F3 `Structural Dynamics' is also analysed. This structure was defined by the Joint Research Centre in Ispra (Italy) to test steel building performance during earthquakes. The proposed method gives an excellent identification of frequencies and mode shapes, while damping ratios are estimated with less accuracy. [less ▲]

Detailed reference viewed: 59 (4 ULg)
Full Text
Peer Reviewed
See detailApplication of artificial neural networks to the evaluation of the ultimate strength of uniaxially compressed welded stiffened aluminium plates
Zareei, Mohammad Reza; Khedmati, Mohammad Reza; Rigo, Philippe ULg

in Proceedings of the Institution of Mechanical Engineers. Part M, Journal of Engineering for the Maritime Environment (2012)

A series of elastoplastic large-deflection finite element analyses is performed on stiffened aluminium plates with flat-bar stiffeners under in-plane longitudinal compression loads. Then, the closed-form ... [more ▼]

A series of elastoplastic large-deflection finite element analyses is performed on stiffened aluminium plates with flat-bar stiffeners under in-plane longitudinal compression loads. Then, the closed-form ultimate compressive strength formula is derived for stiffened aluminium plates by regression analysis. Finally, artificial neural network methodology is applied to predict the ultimate strength of uniaxially compressed stiffened aluminium plates. It is found that artificial neural network models can produce a more accurate prediction of the ultimate strength of the stiffened aluminium plates than can the existing empirical formula. [less ▲]

Detailed reference viewed: 37 (7 ULg)
Full Text
Peer Reviewed
See detailApplication of Bayesian Population Physiologically Based Pharmacokinetic (PBPK) Modeling and Markov Chain Monte Carlo Simulations to Pesticide Kinetics Studies in Protected Marine Mammals: DDT, DDE, and DDD in Harbor Porpoises
Weijs, Liesbeth; Yang, Raymond S.H.; Das, Krishna ULg et al

in Environmental Science & Technology (2013), 47

Physiologically based pharmacokinetic (PBPK) modeling in marine mammals is a challenge because of the lack of parameter information and the ban on exposure experiments. To minimize uncertainty and ... [more ▼]

Physiologically based pharmacokinetic (PBPK) modeling in marine mammals is a challenge because of the lack of parameter information and the ban on exposure experiments. To minimize uncertainty and variability, parameter estimation methods are required for the development of reliable PBPK models. The present study is the first to develop PBPK models for the lifetime bioaccumulation of p,p′-DDT, p,p′-DDE, and p,p′- DDD in harbor porpoises. In addition, this study is also the first to apply the Bayesian approach executed with Markov chain Monte Carlo simulations using two data sets of harbor porpoises from the Black and North Seas. Parameters from the literature were used as priors for the first “model update” using the Black Sea data set, the resulting posterior parameters were then used as priors for the second “model update” using the North Sea data set. As such, PBPK models with parameters specific for harbor porpoises could be strengthened with more robust probability distributions. As the science and biomonitoring effort progress in this area, more data sets will become available to further strengthen and update the parameters in the PBPK models for harbor porpoises as a species anywhere in the world. Further, such an approach could very well be extended to other protected marine mammals. [less ▲]

Detailed reference viewed: 20 (7 ULg)