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See detailProgress in cobalt-mediated radical polymerization
Debuigne, Antoine ULg; Hurtgen, Marie ULg; Piette, Yasmine ULg et al

Poster (2011, May 12)

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See detailProgress in microscopic modeling of damage in steel at high temperature
Remy, M.; Castagne, Sylvie; Habraken, Anne ULg

in International Journal of Forming Processes (2002), 5(N°2-3-4/2002), 445-455

With the goal to study crack propagation in continuous casting, this paper presents an on going project to develop and identify a mathematical finite element model of damage in steel at high temperature ... [more ▼]

With the goal to study crack propagation in continuous casting, this paper presents an on going project to develop and identify a mathematical finite element model of damage in steel at high temperature. A representative microscopic cell of the material is presented and adapted to available chemical information, precipitation state and micro-structures observed using metallographic as weel as imaging methods (optical microscopy, SEM, orientation imaging microscopy). Compression tests of cylindrical samples after a thermal treatment have been performed to identify the parameters of an elasto-visco-plastique law of Norton-Hoff type. Hot damage tests in tensile and compression states help to provide information on crack appearance. [less ▲]

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See detailProgress in milk fat globule membrane research: a review.
Danthine, Sabine ULg; Blecker, Christophe ULg; Paquot, Michel ULg et al

in Lait (Le) (2000), 80(2), 209-222

The milk fat globule is essentially an oil droplet enclosed in a protective 'membrane', partially derived from the plasma membrane of the lactating cell, and which assures the dispersion of the milk fat ... [more ▼]

The milk fat globule is essentially an oil droplet enclosed in a protective 'membrane', partially derived from the plasma membrane of the lactating cell, and which assures the dispersion of the milk fat in the milk plasma. This protective coat is generally called 'the milk fat globule membrane' (MFGM). This review examines the present state of knowledge on the MFGM. The topics dealt with are: origin and formation, isolation From milk, composition (lipids and proteins), structure (a new model is proposed), functional properties and the role that the MFGM plays in protection against lipolysis. [less ▲]

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See detailProgress in Sounding the Interior of Pulsating Hot Subdwarf Stars
Charpinet, Stéphane; Brassard, Pierre; Fontaine, Gilles et al

in AIP Conference Proceedings (2009, September), 1170

Hot subdwarf stars, including helium core burning subdwarf B (sdB) stars and more evolved subdwarf O (sdO) stars, host three classes of nonradial pulsators. Two of them show rapid acoustic mode ... [more ▼]

Hot subdwarf stars, including helium core burning subdwarf B (sdB) stars and more evolved subdwarf O (sdO) stars, host three classes of nonradial pulsators. Two of them show rapid acoustic mode oscillations (with periods in the 60-600 s range), while the third class features slow gravity mode vibrations of period typically 1h. All three classes provide a strong potential for sounding the internal properties of stars in these evolved phases of stellar evolution through asteroseismology. This has so far been exploited mainly for the rapid p-mode sdB pulsators, but the long period g-mode sdB pulsators, with the advent of space observations, carry good promises for sounding even deeper regions inside these stars. In this review paper, we summarize the properties of pulsating hot subdwarf stars and we outline progress that have recently occured in the asteroseismic exploitation of the pulsations observed in sdB stars. [less ▲]

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See detailProgress in the asteroseismic analysis of the pulsating sdB star PG 1605+072
Van Grootel, Valérie ULg; Charpinet, Stéphane; Fontaine, Gilles et al

Conference (2009, July)

The hot pulsating sdB star PG 1605+072 exhibits uncommon spectroscopic and pulsation prop- erties, and is one of the biggest challenge in the field of sdB star modeling. Two hypotheses have been proposed ... [more ▼]

The hot pulsating sdB star PG 1605+072 exhibits uncommon spectroscopic and pulsation prop- erties, and is one of the biggest challenge in the field of sdB star modeling. Two hypotheses have been proposed to explain its unusually rich pulsation spectrum. The first is the natural explanation of a fast-rotating pulsator, which lifts the (2l+1)-fold degeneracy of the frequency components. Another approach, where PG 1605+072 can be seen as a slow rotator, considers that the numerous low amplitude frequency components are second- and third-order harmonics and nonlinear com- binations of the highest amplitude frequencies. We investigated the two hypotheses in the light of asteroseismology, using our latest tools - including pulsation codes that incorporate star rotation and new generation complete sdB models. The results of both approaches are presented, showing interesting results and raising new questions for our understanding of this mysterious sdB star. [less ▲]

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See detailProgress in the asteroseismic analysis of the pulsating sdB star PG 1605+072
Van Grootel, Valérie ULg; Charpinet, Stéphane; Fontaine, Gilles et al

in Astrophysics & Space Science (2010, October), 329

The hot pulsating sdB star PG 1605+072 exhibits uncommon spectroscopic and pulsation properties, and is one of the biggest challenge in the field of sdB star modeling. Two hypotheses have been proposed to ... [more ▼]

The hot pulsating sdB star PG 1605+072 exhibits uncommon spectroscopic and pulsation properties, and is one of the biggest challenge in the field of sdB star modeling. Two hypotheses have been proposed to explain its unusually rich pulsation spectrum. The first is the natural explanation of a fast-rotating pulsator, which lifts the (2 l+1)-fold degeneracy of the frequency components. Another approach, where PG 1605+072 can be seen as a slow rotator, considers that the numerous low amplitude frequency components are second- and third-order harmonics and nonlinear combinations of the highest amplitude frequencies. We investigated the two hypotheses in the light of asteroseismology, using our latest tools—including pulsation codes that incorporate star rotation and new generation complete sdB models. The results of both approaches are presented, showing interesting results and raising new questions for our understanding of this mysterious sdB star. [less ▲]

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See detailProgress in the field of GPIIb/IIIa antagonists
Hanson, Julien ULg; De Leval, X.; David, Jean-Louis ULg et al

in Current Medicinal Chemistry - Cardiovascular and Hematological Agents (2004), 2

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See detailProgress in the medical treatment of prolactinomas
Beckers, Albert ULg

Scientific conference (1995, May 05)

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See detailProgress in the modelization of light reflection for lighting calculations
Embrechts, Jean-Jacques ULg

in Proceedings of the 24th Session of the C.I.E. , CIE Publication n°133-Part 1 (1999)

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See detailProgress in the Use of Vhr Satellite Imagery and Applications in Urban Remote Sensing
Donnay, Jean-Paul ULg; Binard, Marc ULg; Legros, Gauthier et al

in Space scientific research in Belgium (2001)

This paper presents various works completed by the laboratory SURFACES - Department of Geomatics, University of Liege - between 1994 and 2000 in the framework of the TELSAT programme. Not less than 22 ... [more ▼]

This paper presents various works completed by the laboratory SURFACES - Department of Geomatics, University of Liege - between 1994 and 2000 in the framework of the TELSAT programme. Not less than 22 studies have been achieved during this period, which mainly deal with the use of very high resolution (VHR) satellite imagery and urban remote sensing. Owing to the experience accumulated about these topics by the laboratory for the beginning of the TELSAT programme - in the mid of the '80s - the works here under consideration are mainly devoted to applied studies. However fundamental research is not withdrawn. The expectation — and recently the availability — of new sensors was the opportunity for simulating, developing and improving methods, notably in the domains of the fusion of images and satellite photogrammetry. Finally it is worth noting that, as far as our laboratory is concerned, the considered period is also characterized by a wide diffusion of the results of our researches in fundamental and applied remote sensing. Several books and many papers have been published while an international symposium was held in Liege dedicated to urban remote sensing. On the other hand, satellite maps. CD and Web sites have been largely distributed for vulgarisation purposes. [less ▲]

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See detailProgress Report on the Development of the Automatic Target Recognition System for the UGV/RSTA LADAR
Verly, Jacques ULg; Dudgeon, Dan E.; Lacoss, Richard T

Report (1995)

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See detailProgress towards coumarinic derivatives as protease inhibitors
Doucet, C.; Pochet, L.; Schynts, M. et al

Poster (1996, September)

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See detailProgress towards new atomic species laser cooling
Krins, Stéphanie ULg; Saint-Georges, P.; Bastin, Thierry ULg

Poster (2008)

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See detailProgresse-t-on en enseignement des langues étrangères?
Defays, Jean-Marc ULg

Scientific conference (2007, December)

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See detailLa progression au sein de la narration en égyptien: Éléments d’une grammaire du texte
Winand, Jean ULg

in Bulletin de l’Institut Français d’Archéologie Orientale (2000), (100), 403-435

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See detailLa progression au sein de la narration en néo-égyptien
Winand, Jean ULg

Conference (2000, March 30)

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See detailLa progression et les ruptures d'apprentissage en histoire. Les programmes d'éveil et de formation historique dans l'enseignement maternel, primaire et secondaire en Communauté française de Belgique : continuités et discontinuités
Jadoulle, Jean-Louis ULg

in DUFAYS, Jean-Louis; DE KESEL, Myriam; MEURANT, Alain (Eds.) Le « curriculum » en questions. La progression et les ruptures des apprentissages disciplinaires de la maternelle à l’université (2011)

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See detailProgression in MCF-7 Breast Cancer Cell Tumorigenicity: Compared Effect of FGF-3 and FGF-4.
Hajitou, A.; Deroanne, Christophe ULg; Noël, Agnès ULg et al

in Breast Cancer Research and Treatment (2000), 60(1), 15-28

The transforming properties of fibroblast growth factor 3 (FGF-3) were investigated in MCF7 breast cancer cells and compared to those of FGF-4, a known oncogenic product. The short form of fgf-3 and the ... [more ▼]

The transforming properties of fibroblast growth factor 3 (FGF-3) were investigated in MCF7 breast cancer cells and compared to those of FGF-4, a known oncogenic product. The short form of fgf-3 and the fgf-4 sequences were each introduced with retroviral vectors and the proteins were only detected in the cytoplasm of the infected cells, as expected. In vitro, cells producing FGF-3 (MCF7.fgf-3) and FGF-4 (MCF7.fgf-4) displayed an amount of estrogen receptors decreased to around 45% of the control value. However, MCF7.fgf-3 cell proliferation remained responsive to estradiol supply. The sensitivity of the MCF7.fgf-4 cells, if existant, was masked by the important mitogenic action exerted by FGF-4. In vivo, the MCF7.fgf-3 and MCF7.fgf-4 cells gave rise to tumors under conditions in which the control cells were not tumorigenic. Supplementing the mice with estrogen had the paradoxical effect of totally suppressing the start of the FGF-3 as well as the FGF-4 tumors. Tumorigenicity in the presence of matrigel was similar for MCF7.fgf-3 and control cells and was increased by estrogen supplementation. Once started, the MCF7.fgf-4 tumors grew with a characteristic high rate. Remarkably, FGF-4 but not FGF-3, stimulated the secretion of vascular endothelial growth factor (VEGF165) without altering the steady-state level of its mRNA, suggesting a possible regulation of VEGF synthesis at the translational level in MCF7 cells. The increased VEGF secretion is probably involved in the more aggressive phenotype of the MCF7.fgf-4 cells while a decreased dependence upon micro-environmental factors might be part of the increased tumorigenic potential of the MCF7.fgf-3 cells. [less ▲]

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