References of "Scientific congresses and symposiums"
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See detailTilted peptides : from viral fusion to amyloidosis
Lins, Laurence ULg; Brasseur, Robert ULg

Conference (2004, October)

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Peer Reviewed
See detailEffect of inhaled fluticasone on airway reactivity and 8-Iso-PGF2 in bronchoalveolar lavage fluid of cats
Kirschvink, N.; Leemans, J.; Delvaux, François ULg et al

in 5th China - France Pharmacological Joint Symposium - Beijing - France - Octobre 2004 (2004, October)

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See detailPelagic Ecosystems in a High CO2 Ocean : the Mesocosm Approach
Riebesell, U.; Allgaier, M; Avgoustidi, V. et al

Poster (2004, October)

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Peer Reviewed
See detailDomain oriented model reduction of signal transduction models
Conzelmann, H.; Saez-Rodriguez, J.; Sauter, T. et al

Poster (2004, October)

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See detailThe main results of a european research project : improvement of transport safety by control of fog production in a chamber ("FOG")
Andre, Philippe ULg; Aparecida Silva, Cl.; Balocco, E. et al

Conference (2004, October)

The issue of transport safety is identified as a major goal in the European Union. The mid term objective declared in the European White Paper for Transport aims at halving the number of deaths on the ... [more ▼]

The issue of transport safety is identified as a major goal in the European Union. The mid term objective declared in the European White Paper for Transport aims at halving the number of deaths on the roads by 2010. Low visibility conditions, especially due to fog, increase the risk of major accidents (chain collision) and a number of innovative products are developed by the automotive industry, including equipment manufacturers, in order to increase the level of safety of the cars passengers and drivers. Testing of these products require the simulation or artificial reproduction of adequate low visibility (fog) conditions with good stability and reproductibility characteristics. The main objective of the “FOG” project was to develop a prototype of innovative fog chamber in which the mechanistic production of fog (by high pressure spraying of water) in a chamber was assisted by an efficient control of the indoor climate. This prototype was installed in a new building constructed on the campus of the University of Liège in Arlon (Belgium). The developments of the project also include a number of additional products enhancing the capabilities of the prototype: - an improved fog production spraying device, including an optimized management - a laser-based visibility measurement device - a reduced scale transmissiometer - a combined indoor climate - fog production simulation software All these products were successfully tested in the conclusive part of the project making the prototype fully operational and ready for use by researchers in the field of transport safety as well as industrial products manufacturers. The capability of the testing facility to test the interaction with the driver was also investigated. The paper will present the major developments of the project and the potential future perspectives of the work. [less ▲]

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See detailImpact of the pCO2 level on microalgae. Comparison of past, present and futur situations during mesocosms experiments. II- species diversity of diatoms
Huonnic, P.; Martin-Jézéquel, V.; Rincé, Y. et al

Poster (2004, October)

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See detailComparison of three learning methods in a patient with early Alzheimer's disease
Bier, N.; Gagnon, L.; Van der Linden, Martial et al

in Brain and Cognition (2004, October), 56(1), 116

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See detailCarbon Dioxide Dynamics in Antarctic Pack Ice and Transfer at the Ice-Sea and Air-Ice Interface
Delille, Bruno ULg; Tison, J.-L.; Trevena, A.J. et al

Poster (2004, October)

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See detailHolographic interferometry with photorefractive crystals. Early experiments and results of the ongoing european project PHIFE
Georges, Marc ULg; Thizy, Cédric ULg; Lemaire, Philippe et al

in Dantec Ettemeyer 11th International User Meeting (2004, October)

Photorefractive crystals offer many advantages over other classical holographic recording media. They allow fast in-situ processable holographic recording as well as indefinite reusability. Moreover high ... [more ▼]

Photorefractive crystals offer many advantages over other classical holographic recording media. They allow fast in-situ processable holographic recording as well as indefinite reusability. Moreover high signal-to-noise ratio can be reached as well as high resolutions. We present several types of holographic instruments using such materials. Here we will emphasize their applications in vibration measurements. A first one is based on the classical stroboscopic technique, a second one uses a pulsed laser. We describe also the recent results obtained in the framework of the european project PHIFE (Pulsed Holographic Interferomete for the analysis of Fast Events), aiming at developing a full field measurement system of vibrations modes at high repetition rate. [less ▲]

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See detailImpact of the pCO2 level on microalgae. Comparison of past, present & futur situations during mesocosms experiments.
Martin-Jézéquel, V.; Huonnic, P.; Delille, Bruno ULg et al

Poster (2004, October)

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Peer Reviewed
See detailThe social role of the legal expenses insurer in dispute resolution
Paris, Catherine ULg

in Publication Riad International (2004, October)

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See detailIron distribution in a sea ice environment
Lannuzel, D.; de Jong, J.; Schoemann, V. et al

Poster (2004, October)

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Peer Reviewed
See detailSubacute effects of sertraline on attentional and executive functions in major depression
Constant, E. L.; Adam, Stéphane ULg; Gillain, B. et al

in European Neuropsychopharmacology (2004, October), 14(Suppl. 3), 198-199

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See detailTherapeutic application of right prefrontal low repetitive transcranial magnetic stimulation on depressed patients
Fuchs, S.; Reggers, Jean ULg; Pinto, Emmanuel ULg et al

in European Neuropsychopharmacology (2004, October), 14(Suppl. 3), 226

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See detailA functional test procedure for the improved commissioning of a VAV system
Andre, Philippe ULg; Lacôte, P.; Aparecida Silva, Cl. et al

Conference (2004, October)

In the context of the IEA40 research project, a specification of a “Functional Test Procedure” was progressively developed using the CA-MET building in Namur as real size test bench for the application ... [more ▼]

In the context of the IEA40 research project, a specification of a “Functional Test Procedure” was progressively developed using the CA-MET building in Namur as real size test bench for the application and validation of the procedure. The target system is a typical VAV system devoted to the ventilation, cooling and air conditioning functions. The procedure consists in a series of operations to be applied to the system, considered as a set of connected components and taking into account the following constraints: - time availability - intrinsic limitations of the system - reference performances The proposed procedure is divided in two sets of actions: - a number of preliminary actions allowing to take the best benefit of the subsequent phases: o identification of available measurement points o identification of actuators characteristics o identification of control strategies o aeraulic network calculations o selection of measurement techniques and experimental design - the verification tasks themselves: The philosophy of the verification process is to bring the system into a number of states whoch allowed each specific checks to be carried out. The organisation of the procedure tries to optimize the time spent for commissioning by logically sequencing the operations according to the following order: - test in manual operation - test in manual stop - test in normal operation - test at maximum flowrate - test at minimum flowrate - test in automatic stop The paper will provide the specific operations to be carried out at each step and will illustrate the whole process with the prototyping work performed on the CA-MET building in Namur. [less ▲]

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See detailPlace of PCR methods in malaria diagnosis
Klein, Ségolène; Hayette, Marie-Pierre ULg; Melin, Pierrette ULg et al

Conference (2004, October)

Background: Gold-standard method for malaria diagnosis is microscopic examination of Giemsa stained thick and thin blood smears. This method is cheap and simple but fastidious and requires experienced ... [more ▼]

Background: Gold-standard method for malaria diagnosis is microscopic examination of Giemsa stained thick and thin blood smears. This method is cheap and simple but fastidious and requires experienced microscopists. In recent years, molecular biology techniques have been applied with success in the microbiology field because of their great sensitivity and specificity. The aim of this study is the evaluation of Polymerase Chain Reaction (PCR) in the detection of low parasitaemia and mixed infections. Methods: A total of 191 blood samples were included in the study. They were collected from patients admitted to hospital because of suspicion of malaria infection, and distributed as follows: 105 from Liege (Belgium), 42 from Lubumbashi (Democratic Republic of Congo), and 44 from Cayenne (French Guiana). Two PCR techniques targeting the small sub-unit rRNA gene of Plasmodium were tested in comparison with microscopy. The real-time PCR was specific of Plasmodium sp. and the semi-nested multiplex PCR was able to detect each of the four species. Results: The real-time PCR sensitivity was 97% and 100% for multiplex PCR. The specificity of both techniques was 96%. Multiplex PCR detected 2 mixed infections that were missed by microscopy. In 4 cases, both PCR techniques permit to detect parasitaemia after treatment while microscopy was already negative. In one case, parasite DNA was detected by PCR one day before the microscopy became positive. Conclusions: Both PCR techniques presented the same detection limit. The PCR methods had a better sensitivity than microscopy. They detected P. falciparum and P. vivax respectively 7 and 6 days after beginning of treatment. Multiplex PCR allowed species identification and mixed infection determination that could confirm and complete the microscopic examination. Real-time PCR was quicker than nested PCR and could be used for screening in addition to the gold-standard method [less ▲]

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See detailRe-commissioning of a VAV air cistribution system.
Andre, Philippe ULg; Aparecida Silva, Cl.; Fonseca, N. et al

Conference (2004, October)

Three years after its start up, the building considered here is not yet providing a satisfactory comfort to its occupants. Too cold and too hot environmental conditions were too often encountered in ... [more ▼]

Three years after its start up, the building considered here is not yet providing a satisfactory comfort to its occupants. Too cold and too hot environmental conditions were too often encountered in different occupied zones, mainly in mid-season and in summertime. The execution of a re- commissioning process would support in resolving these problems. Previous verifications allowed us to confirm that almost all HVAC components considered are technically “correct” and that almost all problems are coming from mistakes committed when installing and tuning these components. The re-commissioning presented in this paper is based on both calculation and experimental data. [less ▲]

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See detailDevelopment of Advanced Driver Assistance Systems by means of the traffic flow simulation tool PELOPS with HiL-functionalities
Christen, Fréderic ULg; Benmimoun, A.; Breuer, K. et al

in Berechnung und Simulation im Fahrzeugbau (2004, September 29)

During the last years a rapid increase of traffic volume in association with limited road space could be observed. This led to a raising load of the driver while achieving his driving tasks. Therefore so ... [more ▼]

During the last years a rapid increase of traffic volume in association with limited road space could be observed. This led to a raising load of the driver while achieving his driving tasks. Therefore so called Advanced Driver Assistance Systems (ADAS) are under development in recent years with an upward tendency. Such systems will relieve the driver and improve safety on the road in the future. A rising number of computed-aided-simulation becomes important for the development and evaluation of such systems. Developing ADAS makes a specific demand on the simulation environment. ADAS interact strongly with their traffic environment. Therefore the simulation has to cover both, a detailed model of the ego vehicle and an adequate representation of the traffic environment. The traffic flow simulation program PELOPS meets these requirements. The newly implemented extension of PELOPS with techniques of Software- and Hardware-in-the-Loop-simulation (SiL- and HiL-simulation) allows system developers a fast functional check and an assessment of new ADAS. External software can be linked to PELOPS via Ethernet-based network communication, which has already been realised for the widely used development tool MATLAB/Simulink. Besides the Ethernet interface PELOPS-HiL (PHIL) gives the developer two other possibilities for providing a HIL-environment: a serial interface which can be used for a connection to a dSpace development platform and a CAN data bus interface. The following article describes by means of chosen examples how flexible the PHIL-simulation can be adapted to a development task and which results can be obtained. [less ▲]

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See detailLa participation et l’intérêt politique des élèves du secondaire à Saint-Jean de Terre-Neuve: une analyse par classification
Fournier, Bernard ULg

Conference (2004, September 25)

Since 1990, several colleagues and I have had the opportunity to distribute surveys in Quebec, France and Belgium on youth participation and political interests. This data constitutes a rare source of ... [more ▼]

Since 1990, several colleagues and I have had the opportunity to distribute surveys in Quebec, France and Belgium on youth participation and political interests. This data constitutes a rare source of information for analysing the political attitudes of 16-18 years old. Last winter, we have distributed the same survey to the student population in St. John’s, Newfoundland and Labrador (429 high school students). In particular, participation in more than 12 movements and associations was compared with similar data collected in Quebec City in 1998. Interestingly, the same proportion of students participate in one association or another (more than two-thirds) However, it is important to go beyond the usual snapshots provided by sociological indicators to understand such behaviour. Stressing internal differences within groups is essential and cluster analysis (particularly hierarchical cluster analysis) is a perfect tool for this. With a more precise image of the various forms of participation, and with the different attitudes about involvement attached to them, several distinct discourses might be differently qualified youth participation. Moreover, the understanding of political socialization processes could also be questioned. This task, indeed, is crucial to assess and critique existing opinions about youth participation in politics. [less ▲]

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See detailLa construction professionnelle des troubles de l’employabilité
Orianne, Jean-François ULg

Conference (2004, September 24)

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See detailOptimisation of poly(2-(dimethylamino)ethyl methacrylate)-co-poly(ethyleneglycol) /DNA complexes designed for cell transfection
Grandfils, Christian ULg; Emonds-Alt, J

in Proceeding BRG XIIth International Workshop on Bioencapsulation Meeting (2004, September 24)

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See detailOptimization of the encapsulation of Thrombin Receptor Agonist Peptide in PLGA microbeads
Stashevskaya, K; Grandfils, Christian ULg; Markvicheva, E et al

Conference (2004, September 24)

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See detailEvidence-Based Veterinary Medicine
Pasleau, Françoise ULg; Vandenput, Sandrina ULg; Fairon, Nicolas ULg et al

Conference (2004, September 24)

At the University of Liege, the medical library recently merged with several entities including the libraries of Zoology, Botany, Psychology and Veterinary Medicine. Everywhere, the librarians are ... [more ▼]

At the University of Liege, the medical library recently merged with several entities including the libraries of Zoology, Botany, Psychology and Veterinary Medicine. Everywhere, the librarians are involved in teaching activities and users training programs are rather well developped in every field. But the comparison of the curriculum contents points to a few amazing differences. The most surprising one is the approach of Evidence-Based Medicine (EBM). The concept is well introduced in the medical community and it is a legal obligation for the medical students to be thaught in and to practice EBM. Surprisingly, the veterinarians don't seem very interested. Besides its impact on clinical practice, EBM is a good opportunity to create new habits that are valuable for continuing education and to develop critical appraisal skills. Thus, we wish to analyze the reasons that might explain why EBM seems to be left aside at the Faculty of Veterinary Medicine. Two approaches are envisionned. First, we plan to ask the Faculty itself about its position regarding the concept. Surveys and interviews will be conducted, distinguishing between the general practitionners, the researchers and the teaching staff. On the other hand, an in depth analysis will be conducted regarding the media available at the veterinary library. Are they suited to the practice of EBM? If not, which additional tools should be purchased ? At the end of the process, we expect to be able to adapt the content of the training sessions we offer to library users and possibly to improve the collaboration with the veterinary teaching staff. [less ▲]

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See detailMorphologie urbaine et économie des services collectifs
Halleux, Jean-Marie ULg

Conference (2004, September 17)

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Peer Reviewed
See detailExpression of osteopontin and its receptor the alphavbeta3 integrin in the 5TMM myeloma model
CAERS, Jo ULg; De Raeve, Hendrik; Asosingh, Kewal et al

Poster (2004, September 17)

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See detailUtilization of a probiotic-hemicellulases combination to prevent effects of Salmonella contamination of broilers
Dubois Dauphin, Robin ULg; Vandeplas, Sabrina ULg; Welling, Gjalt W. et al

in Proceedings of the Ninth Conference on Food Microbiology (2004, September 16)

The aim of this study was to determine the effectiveness of a combination probiotic - hemicellulases by its relative incidence on gastrointestinal (GI) tract microbiota, correlated to the animal ... [more ▼]

The aim of this study was to determine the effectiveness of a combination probiotic - hemicellulases by its relative incidence on gastrointestinal (GI) tract microbiota, correlated to the animal performances during the growing period of broilers infected or not with Salmonella typhimurium [less ▲]

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See detailUtilidad de la prueba de PCR para el diagnóstico rápido de los Herpes Virus Equinos tipo 1 y 4 en forma combinada
Álvarez, I.; Craig, M.I.; Rodriguez, Sabrina ULg et al

Poster (2004, September 15)

UTILIDAD DE LA PRUEBA DE PCR PARA EL DIAGNOSTICO RAPIDO DE LOS HERPES VIRUS EQUINOS TIPO 1 Y 4 EN FORMA COMBINADA Alvarez I.1*,Craig M.I.1, Rodríguez S.1, Barrandeguy M.1 y Trono K.1 1 Instituto de ... [more ▼]

UTILIDAD DE LA PRUEBA DE PCR PARA EL DIAGNOSTICO RAPIDO DE LOS HERPES VIRUS EQUINOS TIPO 1 Y 4 EN FORMA COMBINADA Alvarez I.1*,Craig M.I.1, Rodríguez S.1, Barrandeguy M.1 y Trono K.1 1 Instituto de Virología, CICVyA. INTA. CC25. 1712. Castelar. Argentina *ialvarez@cicv.inta.gov.ar Cuando se utilizan técnicas de diagnóstico virológico basadas en sistemas libre de células como la prueba de PCR, resulta crítico demostrar que los resultados que se obtienen de su aplicación concuerdan con los resultados obtenidos con el aislamiento viral en cultivo de tejidos, ya que se ha demostrado que la detección de ácidos nucleicos en muestras en estudio no siempre tiene una correlación directa con la causa del cuadro clínico observado. El significado que puede atribuirse a los resultados obtenidos por la prueba de PCR dependerá exclusivamente de la concordancia obtenida con la prueba Gold Standard, lo que permitirá definir claramente el contexto de aplicación de la PCR y la interpretación de los resultados. Con el objetivo de disponer de una herramienta de diagnóstico combinada, rápida y sin utilizar cultivos celulares para la detección del herpes virus equino tipo 1 (HVE-1) y del herpes virus equino tipo 4 (HVE-4), causantes del aborto viral y de un cuadro respiratorio en potrillos, se estandarizó la técnica de PCR según fue descripta en Lawrence et a (1994) con algunas modificaciones, y se evaluó su performance al aplicarse para el diagnóstico de los agentes mencionados en muestras de campo procedentes de casos naturales de abortos o cuadros de tos y moco. La prueba utilizada en este trabajo es un ensayo de tipo múltiple que amplifica fragmentos complementarios al gen de la glicoproteína C del HVE-1 y al gen 76 del HVE-4, donde el tamaño diferencial de los fragmentos obtenidos permite distinguir el origen del material amplificado. Se siguieron los tres criterios básicos descriptos por Hiney and Smith (1999) para la validación de una prueba in vitro de amplificación enzimática, es decir, la evaluación de la cantidad de detección (sensibilidad), calidad de detección (especificidad) y confiabilidad de la prueba en estudio, que fueron evaluados en forma secuencial. A partir de las muestras de abortos e hisopados nasales que ingresaron al laboratorio para análisis virológico por aislamiento viral en cultivo de células desde 1996 hasta la actualidad, se seleccionaron y analizaron un total de 166 muestras. De un total de 34 hisopados nasales, 2 resultaron positivos por las 2 pruebas, ninguno de los hisopos negativos por una de las 2 pruebas resultó positivo por la otra, con un 100% de correlación de resultados. Asimismo, de un total de 132 muestras de aborto analizadas, 31 resultaron positivas por las 2 pruebas, ninguno de los abortos negativos por una las 2 pruebas resultó positivo por la otra, con un 100% de correlación de resultados. Se obtuvo una correlación total entre los resultados obtenidos por la prueba de PCR y el diagnóstico de cultivos de tejidos, considerando los 2 virus en cuestión. Para evaluar la especificidad de la técnica utilizada, se realizó la prueba de PCR utilizando como templado material genético procedente de agentes virales relacionados con el mismo cuadro patológico como el Virus de la Influenza Equina (VIE) y el Virus de la Arteritis Viral Equina (AVE). Además se utilizaron dos virus de la misma familia causantes de otros cuadros patológicos, Herpes virus Equino 2 (HVE-2) y Herpes Virus Equino 3 (HVE-3). No se observaron resultados positivos con ninguno de los cuatro templados utilizados y se confirmó que no amplifica fragmentos inespecíficos. La utilización de una determinada técnica para el diagnóstico del Herpes Virus Equino necesita un alto nivel de confiabilidad, ya que los resultados de la metodología usada podrían condicionar las decisiones referidas al manejo de la población equina bajo estudio. Los resultados obtenidos en el presente trabajo permiten otorgar un importante valor diagnóstico a la prueba de PCR para la detección combinada de Herpes Virus Equino 1 y 4 debido a que presenta total concordancia con los resultados obtenidos en el laboratorio utilizando la prueba de diagnostico convencional de aislamiento viral en cultivo de células. Además es importante recalcar que es una prueba rápida donde el resultado puede obtenerse a las 4 horas. Por esto se puede concluir que la PCR múltiple es una herramienta de diagnostico importante que posibilita tomar medidas de contención inmediatas disminuyendo el impacto económico de estas infecciones en la producción equina. Hiney, M.P. and Smith, P.R. (1998). Validation of polymerase chain reaction- based techniques for proxy detection of bacterial fish pathogens: framework, problems and possible solutions for environmental applications. Aquaculture 162:41-68 Lawrence G.L., Gilkerson J., Love D.N., Sabine M., Whalley J.M. (1994). Rapid, single-step differentiation of equid herpesviruses 1 and 4 from clinical material using the polymerase chain reaction and virus-specific primer. Journal of Virological Methods 47:59-72 [less ▲]

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See detailDeterminantes genéticos de virulencia de cepas de Escherichia coli productoras de Toxina Shiga de origen bovino
Mercado, E.C.; Rodriguez, Sabrina ULg; Vilte, D. et al

Poster (2004, September 15)

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See detailDas Tympanon des Sudportals in Saint-Omer (Frankreich)
Van den Bossche, Benoît ULg

Conference (2004, September 11)

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See detailEscourgeon et Orge d'hiver fourragers
Monfort, Bruno; Herman, Jean-Luc; Bodson, Bernard ULg et al

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (2004, September 09)

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See detailLa qualité des froments d'hiver en 2004?
Sinnaeve, Geoges; Lenartz, J.; Vancutsem, Françoise ULg et al

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (2004, September 09)

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See detailLe froment d'hiver
Couvreur, Luc; Vancutsem, Françoise ULg; Bodson, Bernard ULg et al

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (2004, September 09)

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See detailAlkenone carbon isotopes during a bloom of Emiliania huxleyi: Effects of CO2 concentration and production
Benthien, Albert; Riebesell, Ulf; Engel, Anja et al

Poster (2004, September 05)

The carbon isotopic composition of the C37-alkenones has been used in various paleoceanographic studies to estimate the ancient surface water CO2 concentration [CO2aq]. A number of recent culture, field ... [more ▼]

The carbon isotopic composition of the C37-alkenones has been used in various paleoceanographic studies to estimate the ancient surface water CO2 concentration [CO2aq]. A number of recent culture, field and sediment studies, however, indicate that the carbon isotopic fractionation in haptophyte algae is predominantly controlled by physiological processes and environmental factors other than the ambient [CO2aq]. The most prominent factors are algal growth rate, nutrient availability, light intensity, the carbon uptake mechanism, and the carbon source. To what extent these different factors might affect the carbon isotopic signal of alkenones ultimately preserved in the sediment is still under debate. Causes of uncertainty are the individual strenghts and weaknesses of the different methodological approaches. Culture experiments, for example, cannot perfectly recreate the sum of natural growth conditions and physical processes affecting the carbon isotopic signal in the field and its preservation in the sediment. On the other hand, core-top data represent several hundred to a couple of thousand years and therefore only reflect an average. Here, we present the first study testing the effects of [CO2aq] on the alkenone isotopic signal under natural bloom conditions in a semi-closed system. In a series of 9 floating mesocosms in a Norwegian fjord a bloom of Emiliania huxleyi was followed over a three week period. The mesocosms were covered by gas tight tents. The atmospheric and seawater pCO2 were manipulated to achieve different CO2 levels in the tent atmosphere ranging from pre-industrial (190 ppmv) to year 2100 levels (680 ppmv) as predicted by the IPCC’s report. We found that during the exponential growth phase the isotopic fractionation of alkenones decreased by 5 to 7 per mill and reached a plateau during the stationary phase. During the stationary phase the alkenone content per cell increased from 1-2 pg/cell to 6-8 pg/cell. Between the [CO2aq] treatments we observed an alkenone isotopic difference of only 2 per mill. These results indicate that changes in algal physiology and/or environmental conditions occuring during the course of an algal bloom strongly affect alkenone isotope fractionation. This effect overrides a comparatively small variation in the alkenone isotopic signal due to [CO2aq]. Implications for alkenone isotopic fractionation as a paleo-production or paleo-nutrient proxy will be discussed. [less ▲]

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See detailMarcadores genéticos de virulencia en el Virus de la Leucosis Bovina: Un enfoque filogenético.
Rodriguez, Sabrina ULg; Zwerdling, A.; Jones, L.R. et al

Poster (2004, September 02)

Marcadores genéticos de virulencia en el Virus de la Leucosis Bovina. Un enfoque filogenético. Rodriguez, SM1; Zwerdling A1; Jones, LR1; Trono, K1 1Instituto de Virología, CICVyA, INTA-Castelar. CC 25 ... [more ▼]

Marcadores genéticos de virulencia en el Virus de la Leucosis Bovina. Un enfoque filogenético. Rodriguez, SM1; Zwerdling A1; Jones, LR1; Trono, K1 1Instituto de Virología, CICVyA, INTA-Castelar. CC 25 (1712), Castelar. El virus de la leucosis bovina (Bovine Leukemia Virus, BLV) es un retrovirus oncogénico B-linfocitotrópico perteneciente al genero Deltaretrovirus que afecta al ganado bovino. Junto a los virus responsables de la leucemia de células T de los humanos (Human T-Cell Lymphotropic Virus-1 y Human T-Cell Lymphotropic Virus-2) y de los simios (Simian T-lymhotropic Virus), están clasificados dentro de la familia Retroviridae. Estos virus están asociados con malignidades de células B o T del sistema inmune. La mayoría de los individuos infectados con BLV son portadores asintomáticos en los que la infección pasa clínicamente desapercibida (AL). Cerca del 30% de los animales infectados desarrolla una proliferación benigna policlonal de células B, denominada Linfocitosis Persistente (LP). Sólo un pequeño porcentaje de los animales infectados (1 a 5%) desarrolla linfomas malignos o linfosarcomas (LS) de origen clonal. Realizando comparaciones entre las regiones genómicas 5' Long Terminal Repeats (5' LTR), involucradas en la regulación de la expresión génica viral, observamos la existencia de una correlación entre algunos sitios nucleotídicos y el desarrollo de casos de LS. Si bien esta correlación sugiere la presencia de marcadores de patogenia en la región LTR, es necesario analizar en un contexto histórico (cladograma) la aparición independiente de dicho marcador en conjunto con el desarrollo de LS. Con ese objetivo, se obtuvieron secuencias correspondientes a las regiones genómicas codificantes para las proteínas Env (utilizada en varios trabajos para realizar estudios comparativos) y Px. Las secuencias fueron alineadas mediante el programa ClustalX y los alineamientos fueron utilizados para obtener cladogramas mediante las rutinas de máxima parsimonia del programa PAUP*. El análisis de los árboles obtenidos sugiere que la adquisición del marcador en el sector LTR y el desarrollo de LS en diferentes aislamientos serían independientes, apoyando la hipótesis de la existencia de un marcador de patogenia en dicho sector. Sin embargo, el análisis debe ser ampliado incluyendo más aislamientos del virus y posiblemente otras regiones genómicas, para posibilitar la realización de análisis estadísticos de la correlación y confirmar los resultados del análisis filogenético. Cabe destacar que las topologías obtenidas a partir de las regiones genómicas Env y Px presentan diferencias, lo cual abre la discusión acerca de qué región utilizar para realizar estudios comparativos y filogenéticos para estudiar este virus. Palabras Claves: BLV, LTR, Env, pX, cladograma [less ▲]

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See detailThe Polarization Evolution of the Optical Afterglow of GRB 030329
Greiner, J.; Klose, S.; Reinsch, K. et al

in GAMMA-RAY BURSTS: 30 YEARS OF DISCOVERY (2004, September 01)

We report 31 polarimetric observations of the afterglow of GRB 030329 with high signal-to-noise and high sampling frequency. The data imply that the afterglow magnetic field has small coherence length and ... [more ▼]

We report 31 polarimetric observations of the afterglow of GRB 030329 with high signal-to-noise and high sampling frequency. The data imply that the afterglow magnetic field has small coherence length and is mostly random, probably generated by turbulence. [less ▲]

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See detailTypologie des processus de transformation et performance de la GRH
Cornet, Annie ULg; Bareil, Céline; Luc, Danièle et al

Conference (2004, September)

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See detailIntrinsic and irradiation-induced tumor selectivity of liposome-based gene therapy targeting Akt activation.
Martinive, Philippe ULg; Sonveaux, Pierre; Brouet, Agnes et al

Poster (2004, September)

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See detailEffect of Welding on Ultimate Compressive Strength of Aluminium Stiffened Panels
Rigo, Philippe ULg; Richir, T.; Toderan, C. et al

in HIPER’2004, High Performances Marine Vehicules (2004, September)

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See detailLipids composition of milk fat globule membrane extracted from cream
Bodson, Pascal; Danthine, Sabine ULg; Blecker, Christophe ULg

Poster (2004, September)

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See detailDetection of defects on fruits by machine vision and unsupervised segmentation
Kleynen, Olivier; Destain, Marie-France ULg

in AgEng 2004 Conference (2004, September)

Defect detection on fruits by machine vision is a complex task. Indeed, the sound tissue colour is not uniform and the defects present a wide variability in colour, shape and texture. Mostly often, images ... [more ▼]

Defect detection on fruits by machine vision is a complex task. Indeed, the sound tissue colour is not uniform and the defects present a wide variability in colour, shape and texture. Mostly often, images are acquired by conventional RGB cameras and defect segmentation is performed by algorithms based on Bayes' rules. The efficiency of these methods can be improved firstly by acquiring images with a dedicated vision system (multi-spectral imager) and secondly by implementing unsupervised segmentation methods (method derived from the 'mean shift' procedure of Camaniciu and Meer, 2002). [less ▲]

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See detailHeating effects on some quality caracteristics of date seed oil.
Besbes, Souhail; Blecker, Christophe ULg; Danthine, Sabine ULg et al

Poster (2004, September)

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See detailA new treatment for the reduction of vertebral and non-vertebral fractures in post-menopausal women with osteoporosis
Reginster, Jean-Yves ULg; Brixen, Kim; Bianchi, Gerolamo et al

in Arthritis and Rheumatism (2004, September), 50(number 9 (suppl.)), 291

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See detailNeurophysiological mechanisms of hypnosis
Faymonville, Marie-Elisabeth ULg; Maquet, Pierre ULg; Laureys, Steven ULg

in International Journal of Psychophysiology (2004, September), 54(1-2), 43-44

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See detailBronchial reactivity assessed by whole body barometric plethymography is correlated with lower airway inflammation in cats
Kirschvink, N.; Leemans, J.; Delvaux, François ULg et al

in 14th ESVIM Meeting - Barcelona - Espagne (2004, September)

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See detailA guidance assistance method for precision sugar beet sowing using machine vision.
Leemans, Vincent ULg; Destain, Marie-France ULg

in Pr. Josse De Baerdemaeker (Ed.) AgEng 2004 Conference - Engineering the future - Book of abstracts (2004, September)

This paper presents a method for seed drill guidance by using machine vision

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See detailDynamique d'une population de martins pêcheurs (Alcedo atthis) en Belgique en liaison avec la gestion des cours d'eau.
Libois, Roland ULg

in Actes du 1er colloque international "gestion et préservation des ressoures en eau" (2004, September)

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See detailLupin seeds as a substitute to soybean in broiler chiken feeding : incorporation level and enzyme preparation effects on performances, digestibility and meat composition.
Froidmont, Eric; Beckers, Yves ULg; Dehareng, frédéric et al

in 55th Meeting of European Association of Animal Production (2004, September)

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See detailPerformance increase of carbon dioxide refrigeration cycle with the addition of parallel compression economization
Bell, Ian ULg

in Proceedings of the 6th IIR Gustav Lorenzen Natural Working Fluids (2004, September)

In the future, it would be preferable to replace the halocarbon refrigerants with natural refrigerants like carbon dioxide, but there have been concerns over the use of carbon dioxide as a refrigerant due ... [more ▼]

In the future, it would be preferable to replace the halocarbon refrigerants with natural refrigerants like carbon dioxide, but there have been concerns over the use of carbon dioxide as a refrigerant due to its perceived inefficiency. It is possible to partially overcome this problem by the manipulation of the cylinders of the compressors used in the vapor compression refrigeration cycle. If some of the cylinders are used to compress vapor in a parallel compression system from an intermediary pressure, a refrigerating effect and COP greater than that of the system with all of the cylinders on suction can be achieved. An analytic model was created that allowed environmental and physical parameters to be altered. The investigations also included experimentation with the addition of superheat for the primary compression path, for which performance increases were noted for some operating conditions. The primary focus of the research was for the use of carbon dioxide in a standard air conditioning application. Accordingly, evaporation and condensation pressures were selected to correspond closely with evaporation and condensation temperatures for other refrigerants. Under the conditions used for the following research, superheating did not improve efficiency, and was not included. Physical limitations placed on the ratio of the suction cylinder swept volume to the economized cylinder swept volume suggest that building this economized compressor would be feasible. In fact, a standard reciprocating compressor could be altered such that 2 to 4 cylinders, depending on the volumetric ratio, are used for the economized path. The research demonstrates that under some conditions an economized carbon dioxide system outperforms a similar halocarbon system in terms of efficiency and capacity. In the end, this is the litmus test that proves that carbon dioxide can compete on the level with popular halocarbon refrigerants in this economized mode. [less ▲]

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See detailMeasurement of Halogenated Contaminants in Human Serum and Milk using GCxGC-IDTOFMS
Focant, Jean-François ULg; sjodin; Turner et al

Conference (2004, September)

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See detailEstrogen and pain: a study in aromatase knock-out mice using the formalin model.
Multon, Sylvie ULg

Conference (2004, September)

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See detailModelling groundwater flow and solute transport in karstic systems: from dreams to the reality – how can models help for groundwater vulnerability assessment ?
Dassargues, Alain ULg

in Proceedings of Trans-Karst 2004, International Transdisciplinary Conference on Development and Conservation of Karst Regions (2004, September)

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See detailUtilization of a probiotic-hemicellulases combination to prevent effects of Samonella contamination of broilers.
Dubois Dauphin, Robin ULg; Vandeplas, Sabrina ULg; Welling, Gjalt et al

in Proceeding of the 9th Conference on Food Microbiology, University of Gent (Belgium), September 16-17, 2004 (2004, September)

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See detailDiscovery of new rheumatoid arthritis biomarkers using SELDI-TOF-MS ProteinChip approach
de Seny, D. M.; Fillet, Marianne ULg; Meuwis, Marie-Alice ULg et al

in Arthritis and Rheumatism (2004, September), 50(9, Suppl. S), 124

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See detailSensor network design using genetic algorithm
Gerkens, Carine ULg; Heyen, Georges ULg

(2004, September)

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See detailToxards a SCAR Marine Biodiversity Information Network (SCAR MarBIN)
De Broyer, Claude; Danis, Bruno; Meerhaege, Angelo et al

Poster (2004, September)

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See detailValidating Blade Vibration Amplitudes from Blade Tip-Timing Data Analysis
Gallego-Garrido, Jon; Dimitriadis, Grigorios ULg

in Vibrations in Rotating Machinery (2004, September)

Blade Tip-Timing (BTT) is a method for the measurement of blade vibration in rotating bladed assemblies such as those found in turbomachinery. BTT data needs to be analysed by specially formulated methods ... [more ▼]

Blade Tip-Timing (BTT) is a method for the measurement of blade vibration in rotating bladed assemblies such as those found in turbomachinery. BTT data needs to be analysed by specially formulated methods, to yield the vibration frequencies and amplitudes. Although such methods have been shown to recover frequencies successfully, they have not been validated experimentally for amplitude recovery. In the present paper an improved experimental procedure for amplitude measurement is described. The paper presents a comparison between the experimental observation of the blade vibration amplitudes and the answers obtained from the BTT data analysis methods, providing experimental evidence of the ability of these methods to extract the correct blade vibration amplitudes from BTT data. [less ▲]

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See detailUltimate strength of aluminium stiffened panels: Sensitivity analysis
Rigo, Philippe ULg; Sarghiuta, R.; Otelea, C. et al

in PRADS’2004, 9th Int. Symposium on Practical Design of Ships and other Floating Structures, Germany, Seehafen Verslag GmbH, Hambourg, vol.1, Sept. 2004 (2004, September)

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See detailStrontium treatment has a pronounced Effect on cartilage degradation in postmenopausal women
Alexandersen, Peter; Tanko, Laszlo B; Bagger, Yu Z et al

in Arthritis and Rheumatism (2004, September), 50(number 9 (suppl.)), 346

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See detailSTABILIZATION THROUGH WEAK AND OCCASIONAL INTERACTIONS : A BILLIARD BENCHMARK
Gerard, Manuel; Sepulchre, Rodolphe ULg

in Proceedings of the 6th IFAC Symposium on Nonlinear Control Systems (2004, September)

The paper addresses the stabilization of periodic orbits in a wedge billiard with actuated edges. It is shown how the rich dynamical properties of the open-loop dynamics, e.g. ergodicity properties and ... [more ▼]

The paper addresses the stabilization of periodic orbits in a wedge billiard with actuated edges. It is shown how the rich dynamical properties of the open-loop dynamics, e.g. ergodicity properties and KAM curves, can be exploited to design robust stabilizing feedbacks with large basins of attraction. [less ▲]

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See detailStability and Limit Cycle Oscillation Amplitude Prediction for Multi-DOF Aeroelastic Systems with Piecewise Linear Non-Linearities
Dimitriadis, Grigorios ULg; Vio, Gareth Arthur; Cooper, Jonathan Edward

in Proceedings of the 2004 International Conference on Noise and Vibration Engineering (2004, September)

Discontinuous non-linearities such as freeplay and bilinear stiffness are often encountered in aeroelastic systems, sometimes as a result of wear and tear. It is important to predict the effect of such ... [more ▼]

Discontinuous non-linearities such as freeplay and bilinear stiffness are often encountered in aeroelastic systems, sometimes as a result of wear and tear. It is important to predict the effect of such non-linearities on the dynamic behaviour of a system, so that adequate safety guidelines can be drafted. As a consequence, the prediction of the bifurcation behaviour of a system featuring a discontinuous nonlinearity is crucial. Additionally, the post-bifurcation behaviour of the system is also of interest since it may consist of relatively harmless Limit Cycle Oscillations (LCO) of low amplitude or of unexpected catastrophic high amplitude LCOs. In this paper the bifurcation and post-bifurcation behaviour of a simulated Multi-DOF aeroelastic system with bilinear and freeplay nonlinearities are investigated using the Harmonic Balance method and a novel method for the prediction of the bifurcation conditions and LCO amplitudes. The method is based on the fact that the nonlinearities investigated are piecewise linear. The ratios of the real parts of the system eigenvalues in the various ranges of the bilinear spring are used in order to infer LCO amplitude information. By means of a demonstration on a simulated aeroelastic system with piece-wise linear stiffness, it is shown that the proposed approach is successful in yielding the full bifurcation and post-bifurcation behaviour of the system. Comparison of the amplitude predictions obtained from the Harmonic Balance technique and the Piecewise Linearisation proposed approach show that the latter are more consistent and closer to the true amplitudes throughout the airspeed range. The bifurcation analysis is extended to the special case where the inner stiffness of the bilinear spring is equal to zero, i.e. freeplay stiffness. It is shown that the Piecewise Linear analysis fails to capture the bifurcation behaviour for this case, while the Harmonic Balance method still produces some accurate predictions. [less ▲]

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See detailChemo-Mechanical Modelling of Soil or Rock Degradation
Charlier, Robert ULg; Boukpeti, N.

in 2nd Int. Symposium on Continuous and Discontinuous Modelling of Cohesive Frictional Materials. (2004, September)

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See detailThe presentation of self in the thymus network: a novel way for prevention and cure of autoimmune diseases
Geenen, Vincent ULg

in Journal of Neuroimmunology (2004, September), 154

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See detailTolerability of monthly oral ibandronate in postmenopausal osteoporosis: 1-year results from the MOBILE Study
Recker, Robert R; Silverman, Stuart L; Kendler, David L et al

in Arthritis and Rheumatism (2004, September), 50(number 9 (suppl.)), 293

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See detailOn the solution of the aeroelastic galloping problem
Vio, Gareth Arthur; Dimitriadis, Grigorios ULg; Cooper, Jonathan Edward

in Proceedings of the 2004 International Conference on Noise and Vibration Engineering (2004, September)

A global stability analysis of the transverse galloping of a square section beam in a normal steady ow was performed. The analysis was applied to a mathematical model using experimentally measured ... [more ▼]

A global stability analysis of the transverse galloping of a square section beam in a normal steady ow was performed. The analysis was applied to a mathematical model using experimentally measured stationary aerodynamic forces. The system was modelled as an ordinary differential equation with small non-linearity in the velocity term. Three methods are used for the stability analysis: 1. a harmonic balance approach, 2. normal form theory, 3. cell mapping. The resulting stability predictions were compared with each other and with results obtained from numerical integration. It is shown that the hysteretic stability of the non-linear aeroelastic oscillator was captured by all the methods. Additionally, the methods had a varying degree of success in predicting the amplitude of limit cycle oscillations undergone by the aeroelastic oscillator. [less ▲]

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See detailEcologie de la loutre (Lutra lutra) et conservation de ses habitats riverains
Libois, Roland ULg

in Actes du 1er colloque international "gestion et préservation des ressoures en eau" (2004, September)

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See detailAn error decomposition method: Application to mediterranean sst simulations assessment
Ben Bouallegue, Z.; Alvera Azcarate, Aïda ULg; Beckers, Jean-Marie ULg

Conference (2004, September)

Fields composed of daily simulations provided by an OGCM of the Mediterranean Sea are compared to weekly satellite observations. The method used is inspired of the object-oriented verification procedure ... [more ▼]

Fields composed of daily simulations provided by an OGCM of the Mediterranean Sea are compared to weekly satellite observations. The method used is inspired of the object-oriented verification procedure introduced in meteorological forecast assessment by Ebert and al. 2000. The Error Decomposition Method presented here aims to identify error sources. The method is carried out within the framework of the MFSTEP hindcasts. The MFSTEP project is an international scientific collaboration program which aims to create an operational forecasting system for the Mediterranean Sea. The simulations provided at the basin scale are 10 days forecasting fields in a 3-D ocean. The hydrodynamic model primitive equations are combined with the data assimilation scheme SOFA applied every week. The set of data used for the comparison are weekly SST satellite observations and means of seven daily MFSTEP simulations (analyzed fields) for the equivalent weeks. The original simulation is transformed until the total squared difference between the observed and hindcast fields is minimized. Successively, a new combination of seven consecutive daily simulations is produced, the new SST field is displaced horizontally and the bias suppressed. This allows a decomposition of the total error in 4 parts: a temporal shift error, a position error, an intensity error and a pattern error. This last element is the remaining error after simulation field transformation and corresponds to the unexplained error. The method is applied at different restricted areas of the Mediterranean basin. The predominant displacements in time and in space minimizing error are discussed through the physical processes taking places at each location. More over, ratio between the different error components is analysed in term of scale effect: the role of the application domain size is pointed out. Finally, the seasonal impact on the different results is commented. [less ▲]

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See detailLong term outcome in dogs with sinonasal aspergillosis treated with intranasal infusion of enilconazole
Schuller, S.; Clercx, Cécile ULg

in 14th ESVIM Meeting - Barcelona - Espagne (2004, September)

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See detailTaxonomical study of lactic acid-producing spore-forming bacteria isolated from soil.
Bayane, A.; Diawara, B.; Roblain, D. et al

Poster (2004, September)

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See detailDevelopment of functional material for direct manufacturing for ceramic and metal parts by Optoform process
Clarinval, Anne-Marie; Carrus, Raoul; Vaneetveld, Grégory ULg et al

Conference (2004, September)

Optoform LLC developed a technology to process paste compositions based upon photo-curable resins and fillers. This new process is called by Optoform LLC : the direct composite manufacturing This ... [more ▼]

Optoform LLC developed a technology to process paste compositions based upon photo-curable resins and fillers. This new process is called by Optoform LLC : the direct composite manufacturing This technique is quite flexible and allows the development of very different materials(polymeric, metallic, ceramic). This paper is an overview of the use limitation and the advantages of materials developed by the CRIF or by other teams. Materials requiring or not a post-processing step have been developed. The limits or restrictions of use of these materials have been studied in order to meet the requirements and needs of various industrial sectors in the United States and in Europe (e.g. car racing, aerospace and aeronautical sectors, tooling industries, …). [less ▲]

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See detailWhole-body barometric plethysmography in healthy dogs: effect of sedation on basal respiratory variables and during histamine challenge
Talavera, J.; Kirschvink, N.; Clercx, Cécile ULg

in 14th ESVIM Meeting - Barcelona - Espagne (2004, September)

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See detailControl of Listeria monocytogenes in dairy farms.
Di Tanna, Sybille ULg; Belleflamme, Christel ULg; Anceau, Christine ULg et al

in Proceedings of the Ninth conference on food microbiology (2004, September)

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See detailOPEN-LOOP STABILIZATION OF 2D IMPACT JUGGLING
Ronsse, Renaud; Lefèvre, Philippe; Sepulchre, Rodolphe ULg

in Proceedings of 6th IFAC Symposium on Nonlinear Control Systems (2004, September)

The paper studies the properties of a sinusoidally vibrating wedge billiard as a model for 2D impact juggling. It is shown that some periodic orbits that are unstable in the elastic xed wedge become ... [more ▼]

The paper studies the properties of a sinusoidally vibrating wedge billiard as a model for 2D impact juggling. It is shown that some periodic orbits that are unstable in the elastic xed wedge become exponentially stable in the (non-)elastic vibrating wedge. These orbits are linked with some classical juggling patterns, providing an interesting benchmark for the study of the frequency-locking properties in human rhythmic tasks. [less ▲]

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See detailPractical case of HACCP methodology used for Staphylococcus aureus groth control in raw milk "fromage frais".
Broze, Olivier; Defrize, Nathalie; Sindic, Marianne ULg et al

in Proceedings of the Ninth conference on food microbiology (2004, September)

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See detailEchocardiography as an aid in the diagnosis of pulmonary thrombo-embolism
Van Israel, N.; Clercx, Cécile ULg; Else, R. W.

in 14th ESVIM Meeting - Barcelona - Espagne (2004, September)

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See detailDilatometric Investigations on the Decomposition of Austenite in Two Medium-Carbon Steels With and Without Cr and Mo Additions
Mertens, Anne ULg; Brown, Andrew J.; Zhao, Lie et al

in Proceedings of the MS&T'04 Conference (2004, September)

The interest of small additions of Cr (< 3 wt %) and Mo (~ 0.2 wt %) in steels for automotive and bearing applications has been recently highlighted. The microstructure of these steels is primarily based ... [more ▼]

The interest of small additions of Cr (< 3 wt %) and Mo (~ 0.2 wt %) in steels for automotive and bearing applications has been recently highlighted. The microstructure of these steels is primarily based on the bainitic phase. In order to optimize their microstructure and their mechanical properties, it is, therefore, of primary importance to gain a better understanding of the influence of Cr and Mo on austenite decomposition in varying temperature regimes with a particular attention to the transition between ferrite, bainite and martensite formation. In the present work, dilatometry, combined with detailed microstructural characterisation, is used in order to obtain a full view of transformation processes and kinetics in two medium-carbon steels with and without Cr and Mo additions. [less ▲]

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See detailPatologies ORL et pathologies dentaires: une frontière commune
FINCK, Camille ULg

Conference (2004, September)

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See detailPd-Ag/SiO2 and Pd-Cu/SiO2 cogelled xerogel catalysts for selective hydrodechlorination of 1,2-dichloroethane into ethylene
Lambert, Stéphanie ULg; Ferauche, Fabrice; Brasseur, Alain et al

in CD-ROM of full texts of the 16th International Congress of Chemical and Process Engineering, CHISA (Paper A7.2, 11 p.) (2004, August 22)

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See detailPlasma composition in the Jovian magnetosphere
Radioti, Aikaterini ULg; Krupp, N.; Woch, J. et al

Poster (2004, August 03)

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See detailFocii determination of an off axis ellipsoid : Theory to practice
Houbrechts, Yvette ULg; Roose, Stéphane ULg; Stockman, Yvan ULg

in Osten, W.; Novak, E. (Eds.) Proceedings of the Eighth International Conference on Laser and Laser Information Technologies (2004, August 02)

In the frame of cryogenic test on an off axis ellipsoid, it has been required to set-up an unambiguous method to determine and track the foci position during temperature transitions. This procedure was ... [more ▼]

In the frame of cryogenic test on an off axis ellipsoid, it has been required to set-up an unambiguous method to determine and track the foci position during temperature transitions. This procedure was mandatory to avoid: (1) impact of the operator skills working on triple shift scheme to assure continuously monitoring of the ellipsoid shape during cool down. (2) correctly dissociate the impact of the thermal deformation on the mirror shape with respect to alignment errors. This paper will demonstrate the process, starting from ideal ellipsoid shape, then introducing 3D metrology data in a model, and finally presents the results in a practical situation. [less ▲]

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See detailGetDP/Gmsh: Benefits and Pitfalls of an Open Software Environment
Geuzaine, Christophe ULg

in Kettunen, L. (Ed.) Proceedings of the Advanced Computational Electromagnetism workshop, Seminar on Modern Software Design (2004, August 02)

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See detailWhat can the S [B9] database do for you?
Pourbaix, D.; Jancart, Sylvie ULg; Boffin, H. M. J.

in Allen; Scarfe (Eds.) The environments and evolution of double and multiple stars (2004, August 01)

This paper illustrates different kinds of problems that can be tackled with S [B[SUP]9[/SUP]], the 9th catalogue of spectroscopic binary orbits.

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See detailGeophysical Validation of SCIAMACHY NO2 Vertical Columns: Overview of Early 2004 Results
Lambert, Jean-Christopher; Blumenstock, Thomas; Boersma, F. et al

in Proceedings of the Second Workshop on the Atmospheric Chemistry Validation of ENVISAT (ACVE-2), ESA-ESRIN, Frascati, Italy, 3-7 May 2004 (ESA SP-562, August 2004) ESC01JL1 (2004, August)

Following the recommendations drawn after the Commissioning Phase of the ENVISAT satellite in 2002, SCIAMACHY near real time data processors were upgraded to version 5.01 in early 2004. Before public ... [more ▼]

Following the recommendations drawn after the Commissioning Phase of the ENVISAT satellite in 2002, SCIAMACHY near real time data processors were upgraded to version 5.01 in early 2004. Before public release of the new SCIAMACHY nitrogen dioxide (NO2) vertical column data product, several validation teams investigated its improvement and assessed its geophysical consistency by means of correlative studies involving NDSC-affiliated ground-based networks of DOAS UV-visible and FTIR spectrometers and the ERS-2 GOME satellite. In parallel, preliminary SCIAMACHY NO2 column data products generated by research processors under development at scientific institutes were also tested, using the same correlative data and validation procedures. Digesting the results obtained by a list of validation teams and SCIAMACHY data processing teams, this overview paper draws a preliminary quality assessment of the SCIAMACHY NO2 column data sets available in spring 2004. [less ▲]

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See detailGeneration of closed-form models for the control of flexible mechanisms: a numerical approach
Bruls, Olivier ULg; Duysinx, Pierre ULg; Golinval, Jean-Claude ULg

in Proc. of the 7th Int. Conf. on Motion and Vibration Control (MOVIC) (2004, August)

In robotics, most high performances control strategies require a closed-form representation of the mechanical dynamic behaviour. This is even more critical when significant flexible effects are to be ... [more ▼]

In robotics, most high performances control strategies require a closed-form representation of the mechanical dynamic behaviour. This is even more critical when significant flexible effects are to be considered in the control algorithm. This paper presents a method to build closed-form dynamic equations for flexible multibody systems in terms of minimal coordinates. Relying on the Finite Element (FE) formulation, the method is able to tackle complex topologies with closed-loops in a systematic way. The method is based on an interpolation strategy. For a number of selected points in the configuration space, a full Finite Element model is built and reduced according to a component mode synthesis. Then, a piecewise polynomial model is adjusted to match the collected data. In order to guarantee the continuity of the model, a mode tracking strategy is implemented. After the presentation of the reduction procedure and of the interpolation strategy, a four-bar mechanism is analyzed as an illustrative example. [less ▲]

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See detailImprovement of students’ motivation in a pe class. An action-research project
Cloes, Marc ULg; Viseur, C.; Motter, Pascale

in Klissouras, V.; Kellis, S.; Mouratidis, I. (Eds.) Proceedings of the 2004 Pre-Olympic Congress. Sport Science through the Ages. (2004, August)

Adolescents' motivation is a major concern of PE teachers. Many students, especially girls, are characterized by unmotivated behaviours in the gym. For two decades, quantitative research has been ... [more ▼]

Adolescents' motivation is a major concern of PE teachers. Many students, especially girls, are characterized by unmotivated behaviours in the gym. For two decades, quantitative research has been conducted to better understand the problem. More recently, some qualitative studies have been proposed. ... [less ▲]

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See detailAnalysis of anthropometric caracteristics and jumping ability in junior top level volleyball athletes. Comparison by role
Ciccarone, G.; Fontani, G.; Albert, Adelin ULg et al

Poster (2004, August)

This study is focused on the comparison of the players characteristics in youth Italian top level volleyball athletes according to the role on the game.

Detailed reference viewed: 45 (4 ULg)