References of "2004"
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See detailVariability of the gas transfer velocity of CO2 in a macrotidal estuary (The Scheldt)
Borges, Alberto ULg; Vandenborght, Jean-Pierre; Schiettecatte, Laure-Sophie et al

in Estuaries (2004), 27(4), 593-603

We report a large set of 295 interfacial carbon dioxide (CO2) flux measurements obtained in the Scheldt estuary in November 2002 and April 2003, using the floating chamber method. From concomitant ... [more ▼]

We report a large set of 295 interfacial carbon dioxide (CO2) flux measurements obtained in the Scheldt estuary in November 2002 and April 2003, using the floating chamber method. From concomitant measurements of the air-water CO2 gradient, we computed the gas transfer velocity of CO2. The gas transfer velocity is well correlated to wind speed and a simple linear regression function gives the most consistent fit to the data. Based on water current measurements, we estimated the contribution of water current induced turbulence to the gas transfer velocity, using the conceptual relationship of O’Connor and Dobbins (1958). This allowed us to construct an empirical relationship to compute the gas transfer velocity of CO2 that accounts for the contribution of wind and water current. Based on this relationship, the spatial and temporal variability of the gas transfer velocity in the Scheldt estuary was investigated.Water currents contribute significantly to the gas transfer velocity, but the spatial and temporal variability (from daily to seasonal scales) is mainly related to wind speed variability. [less ▲]

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See detailInteractions between vegetation and rock chemical weathering: A study with a coupled hydrological and biogeochemical model
François, Louis ULg; Bureau, M.; Carignan, J. et al

in Geochimica et Cosmochimica Acta (2004), 68(11), 437-437

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See detailPositive and negative aspects of « Sport + Studies Programmes » organized at secondary school level, perceived by athletes and their classmates
Cloes, Marc ULg; Schelings, Virginie; Ledent, Maryse et al

in Gomez, Varera; Gonzalez, Valeiro; Sanchez, Molina (Eds.) Preparacion professional y necesidades socials (Educacion fisica, deporte, ocio, tercera edad, salud...). Proceedings of the AIESEP International Congress (2004)

In many sports, top level athletes have experienced years of hard practice. Training must be intensive and abide to high quality criteria. Today, promising teenagers are enrolled in sport programmes ... [more ▼]

In many sports, top level athletes have experienced years of hard practice. Training must be intensive and abide to high quality criteria. Today, promising teenagers are enrolled in sport programmes. However, the success of sport careers is so hazardous that it is necessary to guarantee the best school preparation to youths following their way to top level sport ... [less ▲]

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See detailHydro-mechanical numerical modelling of geotechnical problems using local second gradient models
Chambon, René; Collin, Frédéric ULg

in Vermeer, Peter; Ehlers, W.; Herrmann, H. J. (Eds.) Modelling of cohesive-Frictional Materials (2004)

The paper presents some applications of a local second gradient theory used to describe the mechanical behavior of a continua. This theory has been developed in order to avoid some well known drawbacks of ... [more ▼]

The paper presents some applications of a local second gradient theory used to describe the mechanical behavior of a continua. This theory has been developed in order to avoid some well known drawbacks of classical theories, when softening and/or localization occur in a computation. This theory is extended and then applied in a hydromechanical coupled problem, in the case of fully saturated geomaterials. The corresponding finite element method taking into account the geometrical non linearities is detailed. Preliminary results using the finite element code developed in this context are then discussed and allow to study post localization behavior. [less ▲]

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See detailPart 3: Physiopathology of vascular pulmonary diseases
Art, Tatiana ULg; Lekeux, Pierre ULg

in Dunlop, Robert H; Malbert, Charles-Henri (Eds.) Veterinary Pathophysiology (2004)

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See detailL'économie rurale wallonne en chiffres
Burny, Philippe ULg

Speech (2004)

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See detailCellular therapy for cardiac tissue repair by haematopoietic and mesenchymal stem cells
DELGAUDINE, Marie ULg

Master of advanced studies dissertation (2004)

A conceivable strategy in cell and gene therapy is the use of adult stem cells isolated from bone marrow. We defined the optimal conditions for the culture of human and murine mesenchymal stem cells (hMSC ... [more ▼]

A conceivable strategy in cell and gene therapy is the use of adult stem cells isolated from bone marrow. We defined the optimal conditions for the culture of human and murine mesenchymal stem cells (hMSC and mMSC). We observed that the MSC of both species had a special morphology thanks to which it was possible to isolate them in flow cytometry on the basis of the size and granulosity parameter only. We analyzed the MSC phenotype by flow cytometry and observed that the hMSC were CD31-, CD34-, CD45, CD80- and HLA-DR- while they expressed CD73, CD90, CD105 and HLA-1 antigens. mMSC phenotype was CD34-, CD45-, CD11b-, CD106+ and Sca-1+. We also wanted to determine the frequency in progenitors among the mMSC amplified in vitro. To do so, we first assessed the enrichment in CFU-F (Colony-Forming Units – Fibroblast) progenitors. This method consisted in a secondary culture in liquid medium optimized for the development of colonies of mesenchymal origin. We were able to observe an increase of the CFU-F during the MSC passages. Then, we developed a method in order to assess the progenitors frequency by culturing MSC at limiting dilutions (CFUF-IC, Colony-Forming Units Fibroblast-Initiating cells). Once again, we were able to notice that the frequency in progenitors increased during the successive passages. The ratio between the number of CFU-F and the frequency in progenitors amounted to ± 10. We also performed differentiation assays. We were able to differentiate the mMSC in fat cells, chondrocytes and osteoblasts. Finally, we developed a model of left coronary artery ligature in mice as well as immunohistochemical markers showing the antigens CD31, -actinin and connexin 43. With the intent to inject various types of grafts in this animal model, we also studied the cell cycle of the stem cells by Hoechst staining. Fluorescence analysis of mMSC isolated from EGFP transgenic mice revealed that their fluorescence increased from ± 30% in marrow to more than 90% for the mMSC isolated and amplified via an in vitro culture. [less ▲]

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See detailPathologie, leeftijd en geslacht van de olievogels
Jauniaux, Thierry ULg; Masure, S.

(2004)

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See detailThe influence of temperature on bacterial assemblages during bioremediation of a diesel fuel contaminated subAntarctic soil
Delille, Daniel; Pelletier, E.; Coulon, F. et al

Conference (2004)

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See detailEstimation du débit de filtration glomérulaire chez le patient obèse.
Rorive, Marcelle ULg; Saint-Remy, Annie ULg; Delanaye, Pierre ULg et al

in Néphrologie (2004), 24(5), 28

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See detailLow frequency electromagnetic waves in periodic structures
Guenneau, S.; Nicolet, A.; Geuzaine, Christophe ULg et al

in International Journal of Applied Electromagnetics and Mechanics (2004), 19

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See detailSkin tensile properties revisited during ageing. Where now, where next?
Hermanns-Lê, Trinh ULg; Uhoda, Isabelle; Smitz, Simon ULg et al

in Journal of Cosmetic Dermatology (2004), 3(1), 35-40

Skin and its subcutaneous layer represent a complex composite of tissues, whose mechanical characteristics depend upon the mutual interdependence of their constituent parts. The molecular and ... [more ▼]

Skin and its subcutaneous layer represent a complex composite of tissues, whose mechanical characteristics depend upon the mutual interdependence of their constituent parts. The molecular and microanatomical structures of skin allow it to meet normal mechanical demands. They also determine the orientation both of Langer's lines and of relaxed skin tension lines. Ageing, photodamage, hormones, drugs, cosmetic products and dermatological interventions may modify the skin's overall tensile properties. In turn, any variation in mechanical stresses and strains imposed upon the skin's connective tissue influences the metabolic activity and phenotypic expression of fibroblasts and dermal dendrocytes. The viscoelastic functions of ageing skin can be tested by altering the orientation and magnitude of imposed stresses and strains over time. Assessment can be made of various biomechanical properties of skin: tensile, torsional, acoustic shear wave, indentation, impact and elevation. Such objective biomechanical assessments may be applied to dermocosmetic interventions, so providing opportunity for progress in cosmetic dermatological science. [less ▲]

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See detailGraft-versus-tumor effects after allogeneic hematopoietic cell transplantation with nonmyeloablative conditioning
Baron, Frédéric ULg; Maris, Michael; Sandmaier, Brenda et al

in Blood (2004), 104

We have used a nonmyeloablative conditioning regimen consisting of 2 Gy total body irradiation +/– fludarabine, 30 mg/m²/day x 3 days, to condition elderly or ill patients (pts) with hematological ... [more ▼]

We have used a nonmyeloablative conditioning regimen consisting of 2 Gy total body irradiation +/– fludarabine, 30 mg/m²/day x 3 days, to condition elderly or ill patients (pts) with hematological malignancies for allogeneic hematopoietic cell transplantation (HCT). This approach relies almost exclusively on graft-versus-tumor (GVT) effects for control of malignancy. Here, we analyzed GVT effects in 322 pts with hematological malignancies given grafts from HLA-matched related (n=192) or unrelated (n=130) donors. Grades I, II, III and IV acute GVHD were seen in 26 (8.1%), 141 (43.8%), 34 (10.6%) and 11 (3.4%) pts, respectively. Extensive chronic GVHD was seen in 181 (56.2%) pts and of these, 64 (19.9%) cases had de novo chronic GVHD. Putative GVT effects were evaluated using time-dependent Cox regression models. Of the 221 pts with measurable disease at HCT, 126 (57%) achieved complete (n=98) or partial (n=28) remissions. Multivariate analysis identified chemosensitivity for B-cell malignancies (p=.02), and tandem autologous/allogeneic HCT (p=.04) as pre-transplant factors associated with higher probabilities of achieving complete remissions (CR) after HCT. After adjusting for these factors, acute GVHD of any grade was not found to be associated with an increased probability of achieving CR. There was a trend for a higher probability of achieving CR in pts with chronic GVHD (p=.07). Progression/relapse was observed in 108 pts. Multivariate analysis identified that lower disease-risk (p=.0004), tandem autologous/allogeneic HCT (p=.02) and adapted Charlson comorbidity index (CCI) score at transplant < 3 (p=.002) resulted in significantly decreased risk of progression/relapse. After correcting for these factors, extensive chronic GVHD was associated with a decreased risk of progression/relapse (p=.006). Pts with grade 1 acute GVHD tended to have less progression/relapse (p=.07). Conversely, grade II–IV acute GVHD did not significantly affect the risk of progression/relapse. Nonrelapse mortality was observed in 70 pts. Multivariate analysis showed that lower disease-risk (p=. 001), tandem autologous/allogeneic HCT (p=.002) and CCI score at transplant < 3 (p<.0001) significantly decreased nonrelapse mortality. After adjusting for these variables, grade II (p=.04) and grade III–IV (p<.0001) acute GVHD increased nonrelapse mortality while extensive chronic GVHD did not. The 3-year probability of progression-free survival (PFS) was 38.5%. In multivariate analysis, lower disease-risk (p<.0001), tandem autologous/allogeneic HCT (p=.0008) and CCI score at transplant < 3 (p<.0001) resulted in significantly better PFS. After adjusting for theses variables, grade 1 acute GVHD (p=.02) and chronic extensive GVHD (p=.003) were both associated with significantly better PFS, while grade III–IV acute GVHD (p<.0001) was associated with decreased PFS. In summary, chronic GVHD in pts given nonmyeloablative conditioning was associated with substantial GVT effects which led to improved PFS. Conversely, any potential GVT benefits from grade II–IV acute GVHD were offset by higher nonrelapse mortality resulting in worse PFS. Efforts should be directed at reducing the risk of grade II–IV acute GVHD while allowing de novo chronic GVHD for best PFS after allogeneic HCT with nonmyeloablative conditioning. [less ▲]

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See detailUse of a short-acting bronchodilator prevents bronchoscopy-induced airflow limitation in cats
Kirschvink, N.; Leemans, J.; Delvaux, François ULg et al

in 8th Annual Meeting de la Société Française de Pharmacologie - Strasbourg - France - Avril 2004 (2004)

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See detailDocimologie critique : des difficultés de noter des copies et d'attribuer des notes aux élèves
Leclercq, Dieudonné ULg; Nicaise, J.; Demeuse, Marc ULg

in Demeuse, Marc (Ed.) Introduction aux théories et aux méthodes de la mesure en sciences psychologiques et en sciences de l'éducation : 2e candidature en Sciences psychologiques et de l'Education, 1ère licence en Sciences de l'Education (Passerelle) (2004)

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See detailPrincipes de base du fonctionnement du réseau GSM
Demoulin, Cédric; Van Droogenbroeck, Marc ULg

Article for general public (2004)

Si la téléphonie mobile se banalise aujourd'hui, on le doit à la conjonction de l'avènement du numérique, à l'accroissement des performances des semi-conducteurs et à différentes avancées technologiques ... [more ▼]

Si la téléphonie mobile se banalise aujourd'hui, on le doit à la conjonction de l'avènement du numérique, à l'accroissement des performances des semi-conducteurs et à différentes avancées technologiques. Mais le facteur déterminant fut sans doute la cristallisation autour de la norme GSM issue d'un effort soutenu de standardisation mené à l'ETSI (Organe européen de normalisation en télécommunications, créé à l'initiative du Conseil des ministres). Dans cet article, nous passerons en revue différents aspects de la technologie GSM : éléments de la couche physique, caractérisation de la partie radio, architecture du réseau, etc. Pour faciliter la lecture --il faut concéder que les acronymes abondent dans ce domaine--, un glossaire est fourni en fin d'article. [less ▲]

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See detailSouvenirs récupérés, souvenirs oubliés et faux souvenirs
Brédart, Serge ULg; Van der Linden, Martial ULg

Book published by Solal (2004)

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See detailAngioplastie percutanee coronaire chez le patient diabetique Partie 1 : echecs relatifs lies a la restenose apres angioplastie simple.
Warzee, Fabian ULg; Legrand, Victor ULg; Scheen, André ULg

in Revue Médicale de Liège (2004), 59(10), 584-90

Diabetes mellitus, essentially type 2 diabetes, is markedly associated with a high risk of cardiovascular diseases, especially coronary artery disease (CAD). Revascularization techniques, first coronary ... [more ▼]

Diabetes mellitus, essentially type 2 diabetes, is markedly associated with a high risk of cardiovascular diseases, especially coronary artery disease (CAD). Revascularization techniques, first coronary artery bypass graft (CABG) and second percutaneous transluminal coronary angioplasty (PTCA), have drastically changed the management of patients with CAD. Unfortunately, overall results of such revascularization procedures are less impressive in diabetic patients than in nondiabetic subjects, because of a worse vascular bed due to a more diffuse disease including small vessels. The diabetic population is indeed characterized by higher rates of both post-CABG thrombosis and post-PTCA restenosis, as compared to the corresponding rates observed in a nondiabetic population. Such vascular complications result in a higher incidence of coronary events leading to greater morbidity and mortality in both the short (weeks-months) and long (years) term. The bad quality of blood glucose control appears to play a crucial role in the risk of restenosis and further complications. The use of endovascular stents, especially new drug-eluting stents reducing the risk of restenosis, may represent a new opportunity for the management of a high-risk population such as diabetic patients. [less ▲]

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